Abstract

The present invention relates to a method and facility for preparing lignocellulosic biomass, in particular by means of water extraction and optionally particle-size refinement, for subsequent use particularly in a process of torrefaction, carbonization, pellet production, such as fuel pellets or soil enhancement pellets, or the manufacturing of building materials, or even the preparation of agri-food products, comprising centrifugation (100) of the biomass followed by attrition milling and drying (200).

IPC Classes  ?

• F26B 1/00 - Preliminary treatment of solid materials or objects to facilitate drying
• B01D 21/26 - Separation of sediment aided by centrifugal force
• C10L 9/08 - Treating solid fuels to improve their combustion by heat treatment, e.g. calcining
• F23G 5/04 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including pretreatment drying
• F26B 3/10 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it
• F26B 3/36 - Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried by using mechanical effects, e.g. by friction
• F26B 5/08 - Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
• F26B 7/00 - Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups or

Abstract

The present invention relates to a method and facility for preparing lignocellulosic biomass, in particular by means of water extraction and optionally particle-size refinement, for subsequent use particularly in a process of torrefaction, carbonization, pellet production, such as fuel pellets or soil enhancement pellets, or the manufacturing of building materials, or even the preparation of agri-food products, comprising centrifugation (100) of the biomass followed by attrition milling and drying (200).

IPC Classes  ?

• C10L 5/44 - Solid fuels essentially based on materials of non-mineral origin on vegetable substances
• C10L 9/08 - Treating solid fuels to improve their combustion by heat treatment, e.g. calcining
• B01D 21/26 - Separation of sediment aided by centrifugal force
• C12M 1/00 - Apparatus for enzymology or microbiology
• F26B 1/00 - Preliminary treatment of solid materials or objects to facilitate drying

Abstract

The invention relates to a process for converting a biomass into at least one biochar, comprising the following steps: (a) a ground and dried biomass is provided, said biomass containing at least 30% of a lignocellulosic biomass, by mass relative to the dry mass of the ground and dried biomass; (b) this biomass is gradually heated at a temperature above 140°C and below 350°C, in an oxygen-free gas stream, under a pressure of between 1 and 40 bar; (c) the reaction is left to take place by maintaining the temperature within the range of 300‑700°C and the pressure within the range of 1‑40 bar; (d) the biomass resulting from (c) is cooled to a temperature of at most 100°C in an oxygen-free gas stream; and (e) the biochar is recovered. The invention also relates to the biochar thus obtained.

IPC Classes  ?

• C10L 9/08 - Treating solid fuels to improve their combustion by heat treatment, e.g. calcining

Abstract

The invention relates to a process for converting a biomass into at least one biochar, comprising the following steps: (a) a ground and dried biomass is provided, said biomass containing at least 30% of a lignocellulosic biomass, by mass relative to the dry mass of the ground and dried biomass; (b) this biomass is gradually heated at a temperature above 140°C and below 350°C, in an oxygen-free gas stream, under a pressure of between 1 and 40 bar; (c) the reaction is left to take place by maintaining the temperature within the range of 300-700°C and the pressure within the range of 1-40 bar; (d) the biomass resulting from (c) is cooled to a temperature of at most 100°C in an oxygen-free gas stream; and (e) the biochar is recovered. The invention also relates to the biochar thus obtained.

IPC Classes  ?

• C10L 9/08 - Treating solid fuels to improve their combustion by heat treatment, e.g. calcining