CA2395432A1 - Method for thermal transformation of biomass - Google Patents
Method for thermal transformation of biomass Download PDFInfo
- Publication number
- CA2395432A1 CA2395432A1 CA002395432A CA2395432A CA2395432A1 CA 2395432 A1 CA2395432 A1 CA 2395432A1 CA 002395432 A CA002395432 A CA 002395432A CA 2395432 A CA2395432 A CA 2395432A CA 2395432 A1 CA2395432 A1 CA 2395432A1
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- CA
- Canada
- Prior art keywords
- biomass
- pyrolysis
- reducing gas
- gases
- steam
- Prior art date
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- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002028 Biomass Substances 0.000 title claims abstract description 23
- 230000009466 transformation Effects 0.000 title abstract description 3
- 239000007789 gas Substances 0.000 claims abstract description 31
- 238000000197 pyrolysis Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 12
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 8
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 229920006395 saturated elastomer Polymers 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 18
- 230000001131 transforming effect Effects 0.000 abstract 1
- 239000003610 charcoal Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 5
- 229910052740 iodine Inorganic materials 0.000 description 5
- 239000011630 iodine Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000012485 toluene extract Substances 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- -1 99.7% Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000219146 Gossypium Species 0.000 description 1
- 241000208818 Helianthus Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002916 wood waste Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/02—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/06—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by destructive hydrogenation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/40—Gasification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/26—Biowaste
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Carbon And Carbon Compounds (AREA)
- Treating Waste Gases (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The inventive method for thermal transformation of biomass comprises the following: the material is loaded into a converter, the material is pyrolyse d at a temperature of 650 ~C to 950 ~C and in the atmosphere of a reducing gas , steam is supplied after pyrolysis and a fixed residual is abstracted. The reducing gas is obtained by burning hydrocarbon fuel with a coefficient of a ir consumption .alpha. ranging from 0.85 to 1.1 and mixing burned products with pyrolysis gases of the biomass at a correlation of (1-3): 1. The inventive method for transforming biomass makes it possible to use the biomass as a clean ecological fuel and produce activated charcoal possessing a high specific surface of a value of 280 to 500 ml/100g.
Description
n' ~ i METHOD FOR THERMAL TRANSFORMATION OF BIOMASS
Technical Field The present invention relates generally to thermal pyrolysis; more specifically it concerns a method for thermal biomass processing.
Background Art Known in the present state of the art is a method for thermal processing of vegetable-origin materials comprising preparing charcoal resulting from pyrolysis (cf.
RF Pat.
N~ 2,039,078 A).
However, the method in question suffers from too high a power consumption rate due to heat transfer through the wall, a long-time pyrolysis reaction, and a low charcoal adsorption activity (40-SO ml/100 g).
Another method for thermal processing of vegetable-origin materials is known to comprise loading the material, its pyrolysis, and discharging the solid residue (i.e:, charcoal) (c~ USSR Patent Ns 1,808,003 A).
However, the method also suffers from too high a power consumption rate of the process (steam-to-bone-dry wood ratio being (0.6-1.6):l at 400 to 800°C), and a low 2 0 absorbing activity of the resultant charcoal (40 to 50 mi1100 g).
A method for thermal processing of a biomass is also known, said method being conducting at 650 to 950°C in the medium of a reducing gas resulting from combusting a hydrocarbon fuel at an air consumption factor a of from 0.4 to 0.85) (cf. RF
Pat. Ne 2,124,547 A).
However, the method also suffers from a high power consumption rate and inadequately high activity of the resultant charcoal (not over 250 ml/100 g).
Disclosure of the Invention It is a principal object of the present invention to provide a method for thermal processing of a biomass, capable of reducing power consumption rate thereof and enhancing adsorption activity of the resultant charcoal.
n' Said object is accomplished due to the fact that in a method for thermal processing of a biomass, comprising loading the material in a converter, pyrolyzing said material at a temperature ranging between 650 and 950°C in the medium of a reducing gas, feeding of steam after the pyrolysis reaction has been completed, and isolating the solid residue, said reducing gas being prepared by combusting a hydrocarbon fuel at an air consumption factor a ranging from 0.85 to 1.1, and mixing the resultant combustion products together with the biomass pyrolysis gases, the ratio between said gases and said combustion products being (1-3):1.
Said object is accomplished also due to the fact that once the pyrolysis reaction has been completed, saturated steam is fed at a temperature ranging from 105 and 140°C and a weight percentage ratio between said saturated steam and the material under processing equal to (0.1-0.25):1.
Brief Description of the Drawings In what follows the present invention is explained in the disclosure of an exemplary embodiment thereof given by way of illustration to be taken in conjunction with the accompanying drawing representing a flowsheet diagram of the method for thermal processing of a biomass, according to the present invention.
2 0 Best Method of Carrying Out the Invention It is common knowledge that the principal reagents of the reducing gas are H~, CO, CO2, HaO, CH4, C~Ha, C"Hm and hence the rate of the pyrolysis reaction depends (at the same temperature) on the volume concentration of said gas components. The composition of the reducing gas may be changed depending on the air consumption factor involved in 2 5 combusting a hydrocarbon fuel, the higher said factor the higher heat evolution and the content of H~0 and COZ in the fuel combustion products. It has been established by the inventors, the biomass pyrolysis gases emerging from the converter at 220-350°C, contain the same components as the combustion gases (with the factor a of from 0.85 to 1.1 ) fed from the generator for the biomass pyrolysis. Merging the flows of the combustion products with the 3 0 pyrolysis gases results in heat recovery to the process and increased concentration of the reagents indispensable for the biomass pyrolysis reaction, namely, HBO, CO, CO~, H~, CH,,. It is due to recycling the pyrolysis gases into the process that the power consumption rate of the process is much reduced.
The limit weight ratio of the pyrolysis gases and the fuel combustion products, viz, (1-3):1 has been found experimentally upon processing the various vegetable-origin materials, the lower limit being conditioned by providing the highest pyrolysis temperatures, and the upper limit, by providing the lowest temperatures.
The fact that completing the pyrolysis reaction is followed by feeding saturated steam at a ratio of (0.1-0.25):1 makes it possible to cool the activated charcoal and enhance adsorption activity thereof (i.e., the iodine value and optical transmission of the toluene extract). Feeding saturated steam at a ratio below 0.1:1 fails to considerably increase the iodine value, whereas with the steam feeding ratio above 0.25:1 the iodine value is increased but the yield of activated charcoal is badly affected. When preparing activated charcoal it is expedient that saturated steam has a temperature of from 105 to 140°C.
Use of saturated steam makes possible removing the remainder of the hydrocarbon residues.
disposed on the charcoal surface in order to prepare charcoal having a 99.7 to 100-percent optical transmission of the toluene extract.
The appended Drawing represents a flowsheet diagram of the method for thermal processing of a biomass. Shown in the diagram are: converter 1, generator 2, mixer 3, cooled bin 4, air blower 5, and gas blower 6. Arrow A indicates the direction of charging the biomass, arrow B, the direction of steam feeding, arrow C, the direction of discharge of the solid residue, and arrow D, the direction of feed of pyrolysis gases to the boiler.
2 0 The method is carried into effect as follows. The pre-dried biomass is continuously charged from a feed hopper (not shown) through an air-tight feeder into the converter 1 appearing as a metal housing lined from inside with a refractory material resistant to a reducing medium. A reducing gas is fed in a counterflow to the material through a branch-pipe and a system of openings (not shown). The reducing gas is prepared b mixing the 2 5 combustion products arriving from the generator 2, and the biomass pyrolysis gases picked off by the gas blower 6 from the converter 1 at a temperature of 230-350°C, and fed to the mixer 3. The remainder pyrolysis gases are fed for combustion in heat-generating apparatus (e.g., such as boilers). Saturated steam is fed at 105-140°C to the converter 1 downstream along the direction of feed of the material to withdraw a majority of the heat from activated charcoal 3 0 and at the same time cleans its surface from the remainder hydrocarbons.
Then the cooled activated charcoal is from the lower portion of the converter 1 to the bin 4 cooled by the air blower 5, wherefrom the heated air is fed to the generator 2 for fuel combustion. The resultant activated charcoal has a specific surface area (with respect to iodine) ranging from 280 to 500 m1/100 g and a density of from 140 to 180 kg/m3.
CA 02395432 2002-06-17.
Technical Field The present invention relates generally to thermal pyrolysis; more specifically it concerns a method for thermal biomass processing.
Background Art Known in the present state of the art is a method for thermal processing of vegetable-origin materials comprising preparing charcoal resulting from pyrolysis (cf.
RF Pat.
N~ 2,039,078 A).
However, the method in question suffers from too high a power consumption rate due to heat transfer through the wall, a long-time pyrolysis reaction, and a low charcoal adsorption activity (40-SO ml/100 g).
Another method for thermal processing of vegetable-origin materials is known to comprise loading the material, its pyrolysis, and discharging the solid residue (i.e:, charcoal) (c~ USSR Patent Ns 1,808,003 A).
However, the method also suffers from too high a power consumption rate of the process (steam-to-bone-dry wood ratio being (0.6-1.6):l at 400 to 800°C), and a low 2 0 absorbing activity of the resultant charcoal (40 to 50 mi1100 g).
A method for thermal processing of a biomass is also known, said method being conducting at 650 to 950°C in the medium of a reducing gas resulting from combusting a hydrocarbon fuel at an air consumption factor a of from 0.4 to 0.85) (cf. RF
Pat. Ne 2,124,547 A).
However, the method also suffers from a high power consumption rate and inadequately high activity of the resultant charcoal (not over 250 ml/100 g).
Disclosure of the Invention It is a principal object of the present invention to provide a method for thermal processing of a biomass, capable of reducing power consumption rate thereof and enhancing adsorption activity of the resultant charcoal.
n' Said object is accomplished due to the fact that in a method for thermal processing of a biomass, comprising loading the material in a converter, pyrolyzing said material at a temperature ranging between 650 and 950°C in the medium of a reducing gas, feeding of steam after the pyrolysis reaction has been completed, and isolating the solid residue, said reducing gas being prepared by combusting a hydrocarbon fuel at an air consumption factor a ranging from 0.85 to 1.1, and mixing the resultant combustion products together with the biomass pyrolysis gases, the ratio between said gases and said combustion products being (1-3):1.
Said object is accomplished also due to the fact that once the pyrolysis reaction has been completed, saturated steam is fed at a temperature ranging from 105 and 140°C and a weight percentage ratio between said saturated steam and the material under processing equal to (0.1-0.25):1.
Brief Description of the Drawings In what follows the present invention is explained in the disclosure of an exemplary embodiment thereof given by way of illustration to be taken in conjunction with the accompanying drawing representing a flowsheet diagram of the method for thermal processing of a biomass, according to the present invention.
2 0 Best Method of Carrying Out the Invention It is common knowledge that the principal reagents of the reducing gas are H~, CO, CO2, HaO, CH4, C~Ha, C"Hm and hence the rate of the pyrolysis reaction depends (at the same temperature) on the volume concentration of said gas components. The composition of the reducing gas may be changed depending on the air consumption factor involved in 2 5 combusting a hydrocarbon fuel, the higher said factor the higher heat evolution and the content of H~0 and COZ in the fuel combustion products. It has been established by the inventors, the biomass pyrolysis gases emerging from the converter at 220-350°C, contain the same components as the combustion gases (with the factor a of from 0.85 to 1.1 ) fed from the generator for the biomass pyrolysis. Merging the flows of the combustion products with the 3 0 pyrolysis gases results in heat recovery to the process and increased concentration of the reagents indispensable for the biomass pyrolysis reaction, namely, HBO, CO, CO~, H~, CH,,. It is due to recycling the pyrolysis gases into the process that the power consumption rate of the process is much reduced.
The limit weight ratio of the pyrolysis gases and the fuel combustion products, viz, (1-3):1 has been found experimentally upon processing the various vegetable-origin materials, the lower limit being conditioned by providing the highest pyrolysis temperatures, and the upper limit, by providing the lowest temperatures.
The fact that completing the pyrolysis reaction is followed by feeding saturated steam at a ratio of (0.1-0.25):1 makes it possible to cool the activated charcoal and enhance adsorption activity thereof (i.e., the iodine value and optical transmission of the toluene extract). Feeding saturated steam at a ratio below 0.1:1 fails to considerably increase the iodine value, whereas with the steam feeding ratio above 0.25:1 the iodine value is increased but the yield of activated charcoal is badly affected. When preparing activated charcoal it is expedient that saturated steam has a temperature of from 105 to 140°C.
Use of saturated steam makes possible removing the remainder of the hydrocarbon residues.
disposed on the charcoal surface in order to prepare charcoal having a 99.7 to 100-percent optical transmission of the toluene extract.
The appended Drawing represents a flowsheet diagram of the method for thermal processing of a biomass. Shown in the diagram are: converter 1, generator 2, mixer 3, cooled bin 4, air blower 5, and gas blower 6. Arrow A indicates the direction of charging the biomass, arrow B, the direction of steam feeding, arrow C, the direction of discharge of the solid residue, and arrow D, the direction of feed of pyrolysis gases to the boiler.
2 0 The method is carried into effect as follows. The pre-dried biomass is continuously charged from a feed hopper (not shown) through an air-tight feeder into the converter 1 appearing as a metal housing lined from inside with a refractory material resistant to a reducing medium. A reducing gas is fed in a counterflow to the material through a branch-pipe and a system of openings (not shown). The reducing gas is prepared b mixing the 2 5 combustion products arriving from the generator 2, and the biomass pyrolysis gases picked off by the gas blower 6 from the converter 1 at a temperature of 230-350°C, and fed to the mixer 3. The remainder pyrolysis gases are fed for combustion in heat-generating apparatus (e.g., such as boilers). Saturated steam is fed at 105-140°C to the converter 1 downstream along the direction of feed of the material to withdraw a majority of the heat from activated charcoal 3 0 and at the same time cleans its surface from the remainder hydrocarbons.
Then the cooled activated charcoal is from the lower portion of the converter 1 to the bin 4 cooled by the air blower 5, wherefrom the heated air is fed to the generator 2 for fuel combustion. The resultant activated charcoal has a specific surface area (with respect to iodine) ranging from 280 to 500 m1/100 g and a density of from 140 to 180 kg/m3.
CA 02395432 2002-06-17.
Example Waste products of the wood-working industry first are divided to a particle size of from 15 to 35 mm, then dried and heated by a reducing gas prepared by intermixing the products of combusting a hydrocarbon fuel in the generator at a factor a equal to 0.8, and the pyrolysis gases, the ratio between said gases and the combustion products being 2.8:1. The time of the pyrolysis reaction is 25 min. Saturated steam having a temperature of 110°C is fed to the lower portion of the converter l, the ratio between the steam and the material being processed being 0.1:1. The yield of activated charcoal is 24.8%, a specific surface area (with respect to iodine) equals 286 m1/100 g, optical transmission of the toluene extract, 99.7%, and charcoal density, 173 kglm3. The remainder of the pyrolysis gases are fed by the gas blower to the boiler furnace to be combusted there together with an additional amount of fuel fed thereto. The smoke fumes are free from 3-4-benzopyrene and carbon monoxide, the content of nitrogen oxides thereof being 34 mg/m3.
The herein-proposed method for biomass processing makes possible using a biomass 1.5 as a pollution-free fuel, as well as for simultaneous production of activated charcoal having high specific surface area.
Industrial Applicability 2 0 The present invention can find application in the forestry engineering industry for salvage of wood waste products, as well as in farming practice for salvage, in particular, straw, stalks and cops of maize and helianthus, and also husks of millet, rice, cotton, and the like,
The herein-proposed method for biomass processing makes possible using a biomass 1.5 as a pollution-free fuel, as well as for simultaneous production of activated charcoal having high specific surface area.
Industrial Applicability 2 0 The present invention can find application in the forestry engineering industry for salvage of wood waste products, as well as in farming practice for salvage, in particular, straw, stalks and cops of maize and helianthus, and also husks of millet, rice, cotton, and the like,
Claims (2)
1. A method for thermal biomass processing, comprising charging the material in a converter, pyrolyzing said material at a temperature ranging between 650 and 950°C in the medium of a reducing gas, feeding of steam after the pyrolysis reaction has been completed, and isolating the resultant solid residue, CHARACTERIZED in that said reducing gas is prepared by combusting a hydrocarbon fuel at an air consumption factor a ranging from 0.85 to 1.1, and by mixing the resultant combustion products together with the biomass pyrolysis gases, the ratio between said gases and said combustion products being (1-3):1.
2. The method of claim 1, CHARACTERIZED in that saturated steam is fed at a temperature ranging from 105 and 140°C, and a weight percentage ratio between said saturated steam and the material being processed is equal to (0.1-0.25):1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000100568/04A RU2177977C2 (en) | 2000-01-12 | 2000-01-12 | Method for thermally processing biomass |
| RU2000100568 | 2000-01-12 | ||
| PCT/RU2000/000548 WO2001051586A2 (en) | 2000-01-12 | 2000-12-29 | Method for thermal transformation of biomass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2395432A1 true CA2395432A1 (en) | 2001-07-19 |
Family
ID=20229203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002395432A Abandoned CA2395432A1 (en) | 2000-01-12 | 2000-12-29 | Method for thermal transformation of biomass |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20030000822A1 (en) |
| AU (1) | AU2001227175A1 (en) |
| CA (1) | CA2395432A1 (en) |
| DE (1) | DE10085394T1 (en) |
| ES (1) | ES2216695B1 (en) |
| RU (1) | RU2177977C2 (en) |
| WO (1) | WO2001051586A2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7003959B2 (en) * | 2002-12-31 | 2006-02-28 | General Electric Company | High temperature splash plate for temperature reduction by optical reflection and process for manufacturing |
| US9688934B2 (en) | 2007-11-23 | 2017-06-27 | Bixby Energy Systems, Inc. | Process for and processor of natural gas and activated carbon together with blower |
| US20090232725A1 (en) * | 2007-11-23 | 2009-09-17 | Sherman Aaron | Flow rate of gas in fluidized bed during conversion of carbon based material to natural gas and activated carbon |
| RU2481386C2 (en) * | 2008-10-08 | 2013-05-10 | Сергей Петрович Хмеленко | Method for continuous thermochemical treatment of different types of carbon-containing material |
| FI20090183A0 (en) * | 2009-05-08 | 2009-05-08 | Markku Olavi Raiko | Process for thermal treatment of biomass in a boiler |
| US8999885B2 (en) | 2013-01-09 | 2015-04-07 | General Electric Company | Methods of activating charcoal resulting from biomass gasification |
| RU2527221C1 (en) * | 2013-04-09 | 2014-08-27 | Открытое акционерное общество "Электростальское научно-производственное объединение "Неорганика" (ОАО "ЭНПО "Неорганика") | Method of producing activated charcoal from plant wastes |
| RU2541800C2 (en) * | 2013-07-11 | 2015-02-20 | Федеральное государственное бюджетное учреждение науки Институт теплофизики им. С.С. Кутателадзе Сибирского отделения Российской академии наук (ИТ СО РАН) | Method of use and disposal of straw of grain crops |
| US10563128B2 (en) * | 2014-01-10 | 2020-02-18 | Proton Power, Inc. | Methods for aerosol capture |
| CZ2014571A3 (en) * | 2014-08-25 | 2016-04-20 | Aivotec S.R.O. | Apparatus for treating organic material of biological origin by making use of carbonizatin |
| US9890332B2 (en) | 2015-03-08 | 2018-02-13 | Proton Power, Inc. | Biochar products and production |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2438679A1 (en) * | 1978-10-11 | 1980-05-09 | Nal Etu Exper Machinisme Centr | METHOD AND APPARATUS FOR HEAT TREATMENT OF COMBUSTIBLE MATERIALS |
| SU947177A1 (en) * | 1980-01-04 | 1982-07-30 | Ордена Трудового Красного Знамени Институт Химии Древесины Ан Латвсср | Process for converting cellolignin |
| DE3820913A1 (en) * | 1988-06-21 | 1989-12-28 | Metallgesellschaft Ag | METHOD FOR SMOKING WOOD FOR PRODUCING CHARCOAL |
| US5728271A (en) * | 1996-05-20 | 1998-03-17 | Rti Resource Transforms International Ltd. | Energy efficient liquefaction of biomaterials by thermolysis |
| RU2124547C1 (en) * | 1997-10-24 | 1999-01-10 | Антоненко Владимир Федорович | Method of thermally processing biomass |
-
2000
- 2000-01-12 RU RU2000100568/04A patent/RU2177977C2/en not_active IP Right Cessation
- 2000-12-29 WO PCT/RU2000/000548 patent/WO2001051586A2/en not_active IP Right Cessation
- 2000-12-29 DE DE10085394T patent/DE10085394T1/en not_active Ceased
- 2000-12-29 US US10/181,594 patent/US20030000822A1/en not_active Abandoned
- 2000-12-29 CA CA002395432A patent/CA2395432A1/en not_active Abandoned
- 2000-12-29 ES ES200250050A patent/ES2216695B1/en not_active Expired - Fee Related
- 2000-12-29 AU AU2001227175A patent/AU2001227175A1/en not_active Abandoned
Also Published As
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|---|---|
| AU2001227175A1 (en) | 2001-07-24 |
| ES2216695A1 (en) | 2004-10-16 |
| US20030000822A1 (en) | 2003-01-02 |
| WO2001051586A2 (en) | 2001-07-19 |
| ES2216695B1 (en) | 2005-12-16 |
| RU2177977C2 (en) | 2002-01-10 |
| DE10085394T1 (en) | 2003-04-03 |
| WO2001051586A3 (en) | 2002-05-16 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| FZDE | Discontinued |