Birchtech Corp.

United States of America

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        Patent 17
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        United States 21
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Date
2026 June 1
2026 May 2
2026 April 2
2026 (YTD) 6
2025 1
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IPC Class
B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury 11
B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes 9
B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography 8
B01J 20/32 - Impregnating or coating 7
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties 6
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NICE Class
40 - Treatment of materials; recycling, air and water treatment, 4
42 - Scientific, technological and industrial services, research and design 4
01 - Chemical and biological materials for industrial, scientific and agricultural use 3
37 - Construction and mining; installation and repair services 1
Status
Pending 4
Registered / In Force 21

1.

REPURPOSING OF SPENT ACTIVATED CARBON

      
Application Number US2025059393
Publication Number 2026/128807
Status In Force
Filing Date 2025-12-12
Publication Date 2026-06-18
Owner BIRCHTECH CORP. (USA)
Inventor
  • Pavlish, John H.
  • Trettel, James C.

Abstract

A method for repurposing spent activated carbon includes introducing the spent activated carbon including one or more sorbed materials into a high-temperature industrial process to repurpose carbon content in the spent activated carbon.

IPC Classes  ?

2.

ACTIVATED CARBON COMPOSITE AND METHOD OF REMOVING CONTAMINANT

      
Application Number US2025054579
Publication Number 2026/102266
Status In Force
Filing Date 2025-11-07
Publication Date 2026-05-15
Owner BIRCHTECH CORP. (USA)
Inventor
  • Pavlish, John H.
  • Trettel, James C.

Abstract

A method of forming an activated carbon composite includes optionally performing a pre-treatment of a primary carbonaceous material, adding an additive composition to the primary carbonaceous material to form a composite, optionally performing a post-treatment of the composite, wherein at least one of the pre-treatment and the post-treatment are performed, to form the activated carbon composite. A method of treating water or gas includes contacting contaminated water or gas including one or more contaminants with a carbonaceous material and one or more additives to form treated water or gas having a lower concentration of the one or more contaminants than the contaminated water or gas.

IPC Classes  ?

  • B01J 20/08 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising aluminium oxide or hydroxideSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising bauxite
  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
  • C02F 1/28 - Treatment of water, waste water, or sewage by sorption
  • B01J 20/30 - Processes for preparing, regenerating or reactivating
  • B01J 20/32 - Impregnating or coating

3.

ACTIVATED CARBON COMPOSITE AND METHOD OF REMOVING CONTAMINANT

      
Application Number 19383009
Status Pending
Filing Date 2025-11-07
First Publication Date 2026-05-14
Owner Birchtech Corp. (USA)
Inventor
  • Pavlish, John H.
  • Trettel, James C.

Abstract

A method of forming an activated carbon composite includes optionally performing a pre-treatment of a primary carbonaceous material, adding an additive composition to the primary carbonaceous material to form a composite, optionally performing a post-treatment of the composite, wherein at least one of the pre-treatment and the post-treatment are performed, to form the activated carbon composite. A method of treating water or gas includes contacting contaminated water or gas including one or more contaminants with a carbonaceous material and one or more additives to form treated water or gas having a lower concentration of the one or more contaminants than the contaminated water or gas.

IPC Classes  ?

  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01J 20/30 - Processes for preparing, regenerating or reactivating
  • B01J 20/34 - Regenerating or reactivating
  • C01B 32/318 - Preparation characterised by the starting materials
  • C01B 32/354 - After-treatment
  • C01B 32/36 - Reactivation or regeneration
  • C01B 32/384 - Granulation
  • C02F 1/28 - Treatment of water, waste water, or sewage by sorption
  • C02F 101/36 - Organic compounds containing halogen

4.

RJGAC

      
Serial Number 99765669
Status Pending
Filing Date 2026-04-15
Owner Birchtech Corp. (USA)
NICE Classes  ? 40 - Treatment of materials; recycling, air and water treatment,

Goods & Services

Treatment of carbon; treatment of spent carbon; treatment of carbon for removal of contaminants from water; treatment of spent carbon for removal of contaminants from water; treatment of carbon for enhanced removal of contaminants from water; treatment of spent carbon for enhanced removal of contaminants from water; treatment of carbon including activation, regeneration, and reactivation; treatment of carbon including activation, regeneration, and reactivation to enhance the removal of contaminants from water; treatment of carbon for reuse

5.

SEA-IX

      
Serial Number 99763250
Status Pending
Filing Date 2026-04-14
Owner Birchtech Corp. (USA)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Ion exchange resins; nuclear grade ion exchange resins; chemical preparations in the nature of ion exchange resins

6.

CARBON REJUVENATION

      
Serial Number 99611210
Status Pending
Filing Date 2026-01-23
Owner Birchtech Corp. (USA)
NICE Classes  ? 40 - Treatment of materials; recycling, air and water treatment,

Goods & Services

Treatment of carbon; treatment of spent carbon; treatment of carbon for removal of contaminants from water; treatment of spent carbon for removal of contaminants from water; treatment of carbon for enhanced removal of contaminants from water; treatment of spent carbon for enhanced removal of contaminants from water; treatment of carbon including activation, regeneration, and reactivation; treatment of carbon including activation, regeneration, and reactivation to enhance the removal of contaminants from water; treatment of carbon for reuse

7.

SEA

      
Serial Number 99508135
Status Registered
Filing Date 2025-11-20
Registration Date 2026-06-23
Owner Birchtech Corp. (USA)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 40 - Treatment of materials; recycling, air and water treatment,
  • 42 - Scientific, technological and industrial services, research and design

Goods & Services

Chemicals for purification of water and the removal of containments from water; chemicals that enhance the ability of a sorbent to capture mercury for use in industrial, manufacturing and power generation facilities providing services and technologies for cleaner water and air, namely, environmental remediation services in the treatment of water and air environmental services, namely technical consultation in the field of environmental science; environmental engineering, testing, and inspection services; engineering services in the field of environmental compliance

8.

BIRCHTECH

      
Serial Number 98843767
Status Registered
Filing Date 2024-11-08
Registration Date 2025-11-04
Owner Birchtech Corp. ()
NICE Classes  ?
  • 40 - Treatment of materials; recycling, air and water treatment,
  • 42 - Scientific, technological and industrial services, research and design

Goods & Services

providing services and technologies for cleaner water and air, namely, environmental remediation services in the treatment of water and air environmental services, namely technical consultation in the field of environmental science; environmental engineering, testing, and inspection services; engineering services in the field of environmental compliance

9.

ME2C ENVIRONMENTAL

      
Serial Number 98843947
Status Registered
Filing Date 2024-11-08
Registration Date 2025-08-19
Owner Birchtech Corp. ()
NICE Classes  ? 42 - Scientific, technological and industrial services, research and design

Goods & Services

Design of mercury emissions control equipment for the coal-power industry; consulting in the field of mercury emissions control for the coal-power industry

10.

Activated carbon sorbent including nitrogen and methods of using the same

      
Application Number 16574935
Grant Number 11059028
Status In Force
Filing Date 2019-09-18
First Publication Date 2020-01-09
Grant Date 2021-07-13
Owner BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Pavlish, John H.

Abstract

3 more efficiently than other sorbents.

IPC Classes  ?

  • B01J 20/32 - Impregnating or coating
  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
  • B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
  • C01B 32/336 - Preparation characterised by gaseous activating agents
  • B01D 53/81 - Solid phase processes
  • B01D 53/10 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents with dispersed adsorbents
  • B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01D 53/86 - Catalytic processes

11.

Sorbents for the oxidation and removal of mercury

      
Application Number 15853029
Grant Number 11179673
Status In Force
Filing Date 2017-12-22
First Publication Date 2018-05-17
Grant Date 2021-11-23
Owner BIRCHTECH CORP. (USA)
Inventor
  • Pavlish, John H.
  • Olson, Edwin S.
  • Holmes, Michael J.

Abstract

Various embodiments disclosed relate to sorbents for the oxidation and removal of mercury. The present invention includes removing mercury from a mercury-containing gas using a halide-promoted and optionally ammonium-protected sorbent that can include carbon sorbent, non-carbon sorbent, or a combination thereof.

IPC Classes  ?

  • B01D 53/10 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents with dispersed adsorbents
  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
  • B01D 53/83 - Solid phase processes with moving reactants
  • B01J 20/02 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material
  • B01J 20/10 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
  • B01J 20/12 - Naturally occurring clays or bleaching earth
  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
  • B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
  • B01J 20/34 - Regenerating or reactivating

12.

SEA

      
Serial Number 87603032
Status Registered
Filing Date 2017-09-11
Registration Date 2018-07-17
Owner BIRCHTECH CORP. ()
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

chemical additives that enhance the ability of a sorbent to capture mercury for use in the field of the coal power industry

13.

ME2C

      
Serial Number 87603039
Status Registered
Filing Date 2017-09-11
Registration Date 2018-07-24
Owner BIRCHTECH CORP. ()
NICE Classes  ?
  • 37 - Construction and mining; installation and repair services
  • 42 - Scientific, technological and industrial services, research and design

Goods & Services

installation of mercury emissions control equipment for the coal-power industry design of mercury emissions control systems for the coal-power industry; consulting in the field of mercury emissions control for the coal-power industry

14.

Activated carbon sorbent including nitrogen and methods of using the same

      
Application Number 15589359
Grant Number 10471412
Status In Force
Filing Date 2017-05-08
First Publication Date 2017-08-24
Grant Date 2019-11-12
Owner BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Pavlish, John Henry

Abstract

3 more efficiently than other sorbents.

IPC Classes  ?

  • B01J 20/32 - Impregnating or coating
  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
  • B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
  • C01B 32/354 - After-treatment
  • C01B 32/336 - Preparation characterised by gaseous activating agents
  • B01D 53/81 - Solid phase processes
  • B01D 53/10 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents with dispersed adsorbents
  • B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01D 53/86 - Catalytic processes

15.

Sorbent comprising carbon and nitrogen and methods of using the same

      
Application Number 15449112
Grant Number 10130930
Status In Force
Filing Date 2017-03-03
First Publication Date 2017-06-22
Grant Date 2018-11-20
Owner BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Pavlish, John Henry

Abstract

3 more efficiently than other sorbents. The sorbent can include a graphene edge comprising an active site for mercury oxidation and a nitrogen layer structure including cationic nitrogen atoms, neutral nitrogen atoms, or a combination thereof proximate the active site.

IPC Classes  ?

  • B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/30 - Processes for preparing, regenerating or reactivating
  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • B01D 53/81 - Solid phase processes
  • B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
  • B01J 20/32 - Impregnating or coating
  • B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
  • C01B 32/354 - After-treatment
  • C01B 32/336 - Preparation characterised by gaseous activating agents
  • B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01D 53/10 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents with dispersed adsorbents
  • B01D 53/86 - Catalytic processes

16.

Mercury control using moderate-temperature dissociation of halogen compounds

      
Application Number 14880463
Grant Number 09675931
Status In Force
Filing Date 2015-10-12
First Publication Date 2016-06-16
Grant Date 2017-06-13
Owner BIRCHTECH CORP. (USA)
Inventor
  • Holmes, Michael J.
  • Pavlish, John H.
  • Olson, Edwin S.

Abstract

A system and method is provided for the removal of mercury from flue gas. Effective removal of mercury is obtained by oxidation of elemental mercury, with highly reactive halogen species derived from dissociation of halogen compounds at moderate temperatures brought into contact with the flue gas with or without the addition of carbon.

IPC Classes  ?

  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury

17.

Carbon nanocomposite sorbent and methods of using the same for separation of one or more materials from a gas stream

      
Application Number 14564860
Grant Number 09662629
Status In Force
Filing Date 2014-12-09
First Publication Date 2015-04-09
Grant Date 2017-05-30
Owner BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Pavlish, John Henry

Abstract

The present invention relates to carbon nanocomposite sorbents. The present invention provides carbon nanocomposite sorbents, methods for making the same, and methods for separation of a pollutant from a gas that includes that pollutant. Various embodiments provide a method for reducing the mercury content of a mercury-containing gas.

IPC Classes  ?

  • B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
  • B01J 20/12 - Naturally occurring clays or bleaching earth
  • B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
  • B01J 20/30 - Processes for preparing, regenerating or reactivating
  • B01J 20/32 - Impregnating or coating
  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01D 53/50 - Sulfur oxides
  • B01D 53/80 - Semi-solid phase processes, i.e. by using slurries

18.

Mercury control using moderate-temperature dissociation of halogen compounds

      
Application Number 14446992
Grant Number 09155997
Status In Force
Filing Date 2014-07-30
First Publication Date 2014-11-20
Grant Date 2015-10-13
Owner BIRCHTECH CORP. (USA)
Inventor
  • Holmes, Michael J.
  • Pavlish, John H.
  • Olson, Edwin S.

Abstract

A system and method is provided for the removal of mercury from flue gas. Effective removal of mercury is obtained by oxidation of elemental mercury, with highly reactive halogen species derived from dissociation of halogen compounds at moderate temperatures brought into contact with the flue gas with or without the addition of carbon.

IPC Classes  ?

  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • F23J 15/02 - Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
  • F23J 15/04 - Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids

19.

Activated carbon sorbent including nitrogen and methods of using the same

      
Application Number 14195360
Grant Number 09669355
Status In Force
Filing Date 2014-03-03
First Publication Date 2014-09-11
Grant Date 2017-06-06
Owner BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Pavlish, John Henry

Abstract

3 more efficiently than other sorbents.

IPC Classes  ?

  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/32 - Impregnating or coating
  • B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
  • B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
  • C01B 31/08 - Active carbon
  • C01B 31/10 - Preparation by using gaseous activating agents
  • B01D 53/10 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents with dispersed adsorbents
  • B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01D 53/86 - Catalytic processes

20.

Carbon nanocomposite sorbent and methods of using the same for separation of one or more materials from a gas stream

      
Application Number 13453274
Grant Number 09011805
Status In Force
Filing Date 2012-04-23
First Publication Date 2013-10-24
Grant Date 2015-04-21
Owner BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Pavlish, John H.

Abstract

The present invention relates to carbon nanocomposite sorbents. The present invention provides carbon nanocomposite sorbents, methods for making the same, and methods for separation of a pollutant from a gas that includes that pollutant. Various embodiments provide a method for reducing the mercury content of a mercury-containing gas.

IPC Classes  ?

  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
  • B01D 53/50 - Sulfur oxides
  • B01D 53/80 - Semi-solid phase processes, i.e. by using slurries
  • B01J 20/12 - Naturally occurring clays or bleaching earth
  • B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/30 - Processes for preparing, regenerating or reactivating
  • B01J 20/32 - Impregnating or coating

21.

Mercury control using moderate-temperature dissociation of halogen compounds

      
Application Number 13544971
Grant Number 08807056
Status In Force
Filing Date 2012-07-09
First Publication Date 2013-02-07
Grant Date 2014-08-19
Owner BIRCHTECH CORP. (USA)
Inventor
  • Holmes, Michael J.
  • Pavlish, John H.
  • Olson, Edwin S.

Abstract

A system and method is provided for the removal of mercury from flue gas. Effective removal of mercury is obtained by oxidation of elemental mercury, with highly reactive halogen species derived from dissociation of halogen compounds at moderate temperatures brought into contact with the flue gas with or without the addition of carbon.

IPC Classes  ?

  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • F23J 15/02 - Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
  • F23J 15/04 - Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids

22.

SORBENTS FOR THE OXIDATION AND REMOVAL OF MERCURY

      
Document Number 02757309
Status In Force
Filing Date 2010-02-02
Open to Public Date 2010-10-28
Grant Date 2017-01-03
Owner BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Holmes, Michael J.
  • Pavlish, John H.

Abstract

A promoted carbon and/or non-carbon base sorbent are described that are highly effective for the removal of mercury from flue gas streams. The promoted sorbent comprises a carbon and/or non-carbon base sorbent that has reacted with and contains forms of halogen and halides. Optional components may be added to increase and/or preserve reactivity and mercury capacity.These may be added directly with the base sorbent, or in-flight within a gas stream (air, flue gas, etc.), to enhance base sorbentperformance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The promoted sorbent can be regenerated and reused. Base sorbent treatment and preparation methods are also described. New methods for in-flightpreparation, introduction, and control of the active base sorbent into the mercury contaminated gas stream are described.

IPC Classes  ?

  • B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • F23J 15/00 - Arrangements of devices for treating smoke or fumes

23.

Mercury control using moderate-temperature dissociation of halogen compounds

      
Application Number 12167054
Grant Number 08312822
Status In Force
Filing Date 2008-07-02
First Publication Date 2009-01-08
Grant Date 2012-11-20
Owner BIRCHTECH CORP. (USA)
Inventor
  • Holmes, Michael J.
  • Pavlish, John H.
  • Olson, Edwin S.

Abstract

A system and method is provided for the removal of mercury from flue gas. Effective removal of mercury is obtained by oxidation of elemental mercury, with highly reactive halogen species derived from dissociation of halogen compounds at moderate temperatures brought into contact with the flue gas with or without the addition of carbon.

IPC Classes  ?

  • B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
  • F23J 15/02 - Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
  • F23J 15/04 - Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids

24.

Process for regenerating a spent sorbent

      
Application Number 10554018
Grant Number 08173566
Status In Force
Filing Date 2004-04-23
First Publication Date 2007-07-19
Grant Date 2012-05-08
Owner
  • BIRCHTECH CORP. (USA)
  • BIRCHTECH CORP. (USA)
  • BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Holmes, Michael J.
  • Pavlish, John H.

Abstract

A method and apparatus is provided for regenerating a sorbent that has been poisoned by components derived from flue gas. The sorbent is treated with an agent to remove the poisoning components and introduce a promoting agent into the sorbent. The method and apparatus can also be used to enhance the effectiveness of a new sorbent.

IPC Classes  ?

  • B01J 38/64 - Liquid treating or treating in liquid phase, e.g. dissolved or suspended using alkaline materialLiquid treating or treating in liquid phase, e.g. dissolved or suspended using salts

25.

SORBENTS FOR THE OXIDATION AND REMOVAL OF MERCURY

      
Document Number 02584327
Status In Force
Filing Date 2005-08-23
Open to Public Date 2006-04-13
Grant Date 2010-08-17
Owner BIRCHTECH CORP. (USA)
Inventor
  • Olson, Edwin S.
  • Holmes, Michael J.
  • Pavlish, John H.

Abstract

A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.

IPC Classes  ?

  • B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography