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Biomass gasification processor and biomass gasification method

A biomass and processor technology, applied in the field of biomass gasification equipment and biomass treatment, can solve the problems of complex series process and large heat loss, achieve high integration of reaction system, less energy dissipation, and simplify process flow Effect

Active Publication Date: 2020-12-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN100543116C uses the oxygen-depleted fluidized bed and the downdraft fixed bed in series, and the fuel burns in the oxygen-depleted fluidized bed to generate semi-coke and tar-containing semi-formed gas, which is transported to the downstream downdraft fixed-bed gas at high temperature. The furnace is used for tar removal, but the heat loss in the gas transportation process is large under high temperature conditions, and the series process is complicated

Method used

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  • Biomass gasification processor and biomass gasification method

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Effect test

Embodiment 1

[0045] Adopt above-mentioned biomass gasification processor, select forestry residue fir as raw material, device feeding material is fir pulverized material after forming and processing granular material, is columnar particle, length is 20mm, section diameter 10mm, water content 4wt%, heat The value is 18.67 MJ / kg. The fir pellets are pushed and filled in the biomass pyrolysis zone by the screw feeder, and the solid product bio-semi-coke after the reaction is used as the filler in the tar conversion zone and loaded in the tar conversion zone by the screw feeder. When the airtightness of the reactor is good, nitrogen enters from the gas inlet, and the displaced air in the reactor is discharged from the gas outlet, and the gas inlet is closed after 3 to 5 minutes of replacement. During the reaction process, a slight negative pressure operation is adopted, and the vacuum degree in the reactor is maintained between 400 and 600 Pa. The reaction temperature in the biomass pyrolysis...

Embodiment 2

[0047] Adopt above-mentioned biomass gasification processor, select forestry residue larch as raw material, device feeding material is larch pulverized material after forming and processing granular material, is columnar particle, length 30mm, section diameter 10mm, moisture content 10wt%, The heat value is 18.63MJ / kg. The larch pellets are pushed and filled in the biomass pyrolysis zone by a screw feeder. The filling in the tar conversion zone includes two layers, wherein the biomass semi-coke is used as the first filling layer, and the bio-semi-coke with a potassium carbonate loading of 10wt% Coke as a second fill layer. When the airtightness of the reactor is good, nitrogen enters from the gas inlet, and the replaced air in the reactor is discharged from the gas outlet, and the gas inlet is closed after 3 to 5 minutes of replacement. During the reaction process, a slight negative pressure operation is adopted, and the vacuum degree in the reactor is maintained between 400 ...

Embodiment 3

[0049] Using the above-mentioned biomass gasification processor, select the forestry residue sylvestris sylvestris sylvestris as raw material, and the device feeds the sylvestris sylvestris sylvestris crushed material after molding and processing, which is columnar particles with a length of 15mm, a cross-sectional diameter of 12mm, and a water content of 6wt. %, calorific value is 18.42MJ / kg. Pine sylvestris granules are pushed and filled in the biomass pyrolysis zone by a screw feeder. Biomass semi-coke and dolomite are mechanically mixed according to a mass ratio of 10:1 as the first filling layer. The nickel oxide loading is 5wt%. Semi-focus as a second fill layer. When the airtightness of the reactor is good, nitrogen enters from the gas inlet, and the replaced air in the reactor is discharged from the gas outlet, and the gas inlet is closed after 3 to 5 minutes of replacement. During the reaction process, a slight negative pressure operation is adopted, and the vacuum d...

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Abstract

The invention discloses a biomass gasification processor and a biomass gasification method. The biomass gasification processor comprises a shell, the shell comprises a reaction zone and an ash storagezone, the reaction zone is divided into a biomass pyrolysis zone and a tar conversion zone by a partition plate, the biomass pyrolysis zone is communicated with the tar conversion zone through the ash storage zone, a gas inlet is formed in the top of the biomass pyrolysis zone, and a gas outlet is formed in the top of the tar conversion zone. The biomass gasification method comprises the steps that biomass raw materials enter the gasification processor and react in the biomass pyrolysis zone, and high-temperature flue gas and biological semi-coke are obtained after reaction; and high-temperature flue gas enters the tar conversion zone after passing through the ash storage zone and is in contact with a filler filled in the tar conversion zone for reaction. According to the biomass gasification processor and the biomass gasification method, the tar and dust content of fuel gas can be reduced, and the gasification efficiency of raw materials can be improved.

Description

technical field [0001] The invention belongs to the technical field of biomass treatment, and in particular relates to a biomass gasification device and a biomass treatment method. Background technique [0002] The biomass gasification process needs to be completed in the gasification reactor. As the core component of the gasification system, the selection of the gasification reactor is very important. The energy conversion efficiency of the gasification reactor is the key to the entire gasification system. Therefore, the type of gasification reactor and its control operating parameters are very important constraints for the gasification system. Common reactor types include fixed bed, bubbling Bed, fluidized bed, circulating fluidized bed, spouted bed, entrained bed, etc. Among them, the fixed bed reactor has simple structure, low cost and easy operation, and is widely used in the field of small and medium-scale biomass gas production. [0003] In the biomass gasification p...

Claims

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Application Information

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IPC IPC(8): C10J3/60C10J3/20C10J3/06C10J3/66C10J3/84C10J3/72
CPCC10J3/06C10J3/20C10J3/60C10J3/66C10J3/72C10J3/721C10J3/84C10J2300/0916C10J2300/092C10J2300/0956C10J2300/0959C10J2300/0966C10J2300/0976C10J2300/0986C10J2300/1603
Inventor 赵丽萍宋永一王鑫张彪吴斯侃刘继华张长安
Owner CHINA PETROLEUM & CHEM CORP
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