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Biomass combined gasification equipment

A gasification device and biomass technology, applied in the direction of gasification process, biological raw materials, granular/powdered fuel gasification, etc., can solve the problems of short residence time of particles, insufficient secondary reaction in the furnace, and ability to adjust components Insufficient problems, etc., to achieve the effect of strong gas component regulation ability, strong load adaptability, and easy amplification

Active Publication Date: 2013-08-28
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] It can be seen from the above that the current gasification process for removing tar in the furnace is mostly implemented by connecting several reactors in series. Only the Chinese patent with the publication number "CN101225315A" proposes an integrated biomass composite gasification device, but due to the Structural space limitation, particle residence time is short, secondary reaction in the furnace is not sufficient, component modulation ability is not strong

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Embodiment 1

[0024] Biomass wood chips are fed into the pyrolysis zone 4 in the upstream section 1 of the composite gasifier from the feed port 3, and a pyrolysis reaction occurs at a temperature of 500-700°C, and the biomass releases volatile gas and generates solid coke; large coke particles Flow down into the coke gasification and partial combustion zone 5 in the upstream section 1 of the gasifier, and the oxygen-enriched air (O 2Concentration of 90%), a small part of coke undergoes oxidation reaction, so that the temperature of coke gasification and partial combustion zone 5 reaches 800-900 ° C, and most of the coke undergoes gasification reaction to generate combustible gas; self-coke gasification and partial combustion The high-temperature gas flowing upward in zone 5 provides the heat required for biomass pyrolysis to biomass pyrolysis zone 4, and maintains the temperature of pyrolysis zone 4 at 500-700°C; The fine solid particles entrained by the gas enter the downstream section 2 ...

Embodiment 2

[0026] Biomass wood chips are fed into the pyrolysis zone 4 in the upstream section 1 of the composite gasifier from the feed port 3, and a pyrolysis reaction occurs at a temperature of 500-700°C, and the biomass releases volatile gas and generates solid coke; large coke particles The coke gasification and partial combustion zone 5 flowing down into the upper section 1 of the gasifier, the oxygen-enriched air added from the primary gasification agent inlet 6 (O 2 Concentration of 90%), a small part of coke undergoes oxidation reaction, so that the temperature of coke gasification and partial combustion zone 5 reaches 800-900 ° C, and most of the coke undergoes gasification reaction to generate combustible gas; self-coke gasification and partial combustion The high-temperature gas flowing upward in zone 5 provides the heat required for biomass pyrolysis to biomass pyrolysis zone 4, and maintains the temperature of pyrolysis zone 4 at 500-700°C; The fine solid particles entraine...

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Abstract

A biomass combined gasification equipment comprises a combined gasification furnace. The combined gasification furnace consists of an up-flow section (1), a cross-flow section (7) and a down-flow section (2), of which the insides are communicated in turn. The up-flow section and down-flow section have a circular cross-section and the cross-flow section has a square cross-section. The gas generated by the biomass pyrolyzing and gasifying in the up-flow section of the gasifying furnace tangentially enters the down-flow section of the gasification furnace together with fine solid particles. The up-flow section has a biomass feed inlet (3) and a first gasifying agent inlet (6), the cross-flow section has a second gasifying agent inlet (8), the lower part of the down-flow section has a gas outlet (10), and the bottom of the down-flow section has an ash outlet. The biomass combined gasification equipment combines the processes of pyrolysis, gasification, cracking, reforming and partial oxidation in the same reactor to realize zone-based control and optimization of parameters. The equipment has the characteristics of high gasification efficiency, low tar content, high regulation and control capability for gas components, high load adaptability, strong material applicability, stable running and easy amplification, and can be widely used in the fields of power generation, heat supply, gas supply, liquid fuel synthesis and the like.

Description

technical field [0001] The invention relates to the technical field of biomass gasification, in particular to a biomass composite gasification device for removing tar in a furnace. technical background [0002] Due to the increasing shortage of petroleum resources, environmental pollution and greenhouse effect problems are becoming more and more serious, obtaining high-grade fuels and chemicals from abundant biomass agricultural and forestry waste resources (such as straw, etc.) is gradually becoming a development trend. highly anticipated. Biomass gasification technology can convert various waste biomass into high-grade gaseous fuels, which can be used for industrial power generation, combined heat and power generation, centralized gas supply, industrial heating and heating, as well as synthetic gas for synthesizing liquid fuels and for fuel cells Provide gas source, etc. Biomass gasification has become one of the most promising technologies for utilizing low-grade biomas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/66C10J3/84C10J3/48
CPCC10J3/526C10J3/66C10J2300/0916C10G2300/1011C10J3/485C10G1/02C10G2300/4006C10G3/00Y02P20/129Y02P20/145Y02P30/20
Inventor 吴创之阴秀丽周肇秋陈坚马隆龙
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI