Goods & Services

(1) Industrial air cleaning units for gas handling, thermal oxidation, chemical oxidation, and wet electrostatic precipitators; black liquor evaporators; evaporators for chemical processing; crystallizers for use in the pulp and paper, mining and mineral processing, oil and gas, power, chemical and process industries; condensate stripping columns; industrial heat recovery units; heat exchangers; direct contact condensers and surface condensers for use in heat transfer systems; industrial soap recovery and handling units for use in the pulp and paper industry; industrial turpentine recovery and handling units; industrial chemical recovery and handling units, namely, equipment for use in white liquor oxidation, chemical mixers and reactors, pressure vessels, distillation columns, sulfur dioxide and chlorine vaporizers, and quench vessels; industrial sulfur handling units for use in handling, off-loading and storing sulfuric acid, pril sulfur, molten sulfur and sulfur dioxide; sulfur burners for use in the pulp and paper, chemical plants, wet corn milling, soap manufacturing and mining industries; foul gas collectors and incinerators for use in the pulp and paper industry; industrial methanol purification units for use in the pulp and paper industry; (1) Installation and maintenance of industrial air cleaning units for gas handling, thermal oxidation, chemical oxidation, and wet electrostatic precipitators; installation and maintenance of black liquor evaporators, evaporators for chemical processing, crystallizers for use in the pulp and paper, mining and mineral processing, oil and gas, power, chemical and process industries, condensate stripping columns, industrial heat recovery units, heat exchangers, direct contact condensers and surface condensers for use in heat transfer system, industrial soap recovery and handling units for use in the pulp and paper industry, industrial turpentine recovery and handling units, industrial chemical recovery and handling units, namely, equipment for use in white liquor oxidation, chemical mixers and reactors, pressure vessels, distillation columns, sulfur dioxide and chlorine vaporizers, and quench vessels, industrial sulfur handling units for use in handling, offloading and storing sulfuric acid, pril sulfur, molten sulfur and sulfur dioxide, sulfur burners for use in the pulp and paper, chemical plants, wet corn milling, soap manufacturing and mining industries, foul gas collectors and incinerators for use in the pulp and paper industry, industrial methanol purification units for use in the pulp and paper industry; (2) Design, planning and engineering of industrial air cleaning units for gas handling, thermal oxidation, chemical oxidation, and wet electrostatic precipitators; design, planning, engineering and development of black liquor evaporators, evaporators for chemical processing, crystallizers for use in the pulp and paper, mining and mineral processing, oil and gas, power, chemical and process industries, condensate stripping columns, industrial heat recovery units, heat exchangers, direct contact condensers and surface condensers for use in heat transfer systems, industrial soap recovery and handling units for use in the pulp and paper industry, industrial turpentine recovery and handling units, industrial chemical recovery and handling units, namely, equipment for use in white liquor oxidation, chemical mixers and reactors, pressure vessels, distillation columns, sulfur dioxide and chlorine vaporizers, and quench vessels, industrial sulfur handling units for use in handling, off-loading and storing sulfuric acid, pril sulfur, molten sulfur and sulfur dioxide, sulfur burners for use in the pulp and paper, chemical plants, wet corn milling, soap manufacturing and mining industries, foul gas collectors and incinerators for use in the pulp and paper industry, industrial methanol purification units for use in the pulp and paper industry; technical consulting in the field of process engineering; technical consulting in the field of project engineering; design and development of industrial air cleaning units for gas handling, thermal oxidation, chemical oxidation, and wet electrostatic precipitators;

Abstract

The invention relates to a method and apparatus to recover and purify methanol from gases produced in the digester during the kraft pulping process. The gas is typically recovered as a foul gas (called stripper off gas or SOG) comprising methanol, water and various other contaminants. The gas is then treated with successive decanting and distillation steps to remove impurities, thereby producing highly purified methanol.

IPC Classes  ?

• C07C 29/78 - SeparationPurificationStabilisationUse of additives by physical treatment by condensation or crystallisation
• B01D 3/14 - Fractional distillation
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
• B01D 53/00 - 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
• D21C 11/06 - Treatment of pulp gasesRecovery of the heat content of the gases

Abstract

The invention relates to a method and apparatus to recover and purify methanol from gases produced in the digester during the kraft pulping process. The gas is typically recovered as a foul gas (called stripper off gas or SOG) comprising methanol, water and various other contaminants. The gas is then treated with successive decanting and distillation steps to remove impurities, thereby producing highly purified methanol.

IPC Classes  ?

• B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
• B01D 3/02 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in boilers or stills
• C07C 29/78 - SeparationPurificationStabilisationUse of additives by physical treatment by condensation or crystallisation
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
• B01D 3/14 - Fractional distillation
• B01D 53/00 - 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
• D21C 11/06 - Treatment of pulp gasesRecovery of the heat content of the gases

Abstract

The invention relates to a method and apparatus to recover and purify methanol from gases produced in the digester during the kraft pulping process. The gas is typically recovered as a foul gas (called stripper off gas or SOG) comprising methanol, water and various other contaminants. The gas is then treated with successive decanting and distillation steps to remove impurities, thereby producing highly purified methanol.

IPC Classes  ?

• B01D 53/72 - Organic compounds not provided for in groups , e.g. hydrocarbons
• B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
• D21C 11/06 - Treatment of pulp gasesRecovery of the heat content of the gases

Abstract

The invention relates
to a method and apparatus to recover
and purify methanol from gases pro-duced
in the digester during the kraft
pulping process. The gas is typically
recovered as a foul gas (called stripper
off gas or SOG) comprising methanol,
water and various other contaminants.
The gas is then treated with successive
decanting and distillation steps to re-move
impurities, thereby producing
highly purified methanol.

IPC Classes  ?

• B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
• B01D 53/72 - Organic compounds not provided for in groups , e.g. hydrocarbons
• D21C 11/06 - Treatment of pulp gasesRecovery of the heat content of the gases