Three-stage gasification device for producing synthesis gas through biomass pyrolysis and gasification

A technology of pyrolysis gasification and biomass, which is applied to the gasification of granular/powdered fuels, chemical industry, and the manufacture of combustible gases. It can solve the problems of complex gasification systems and devices, sensitive physical properties, and difficult operation control. Achieve the effects of simple structure, lower tar content, and convenient temperature control

Active Publication Date: 2012-01-25
PEKING UNIV SHENZHEN GRADUATE SCHOOL +1
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Problems solved by technology

However, the fluidized bed reactor is also sensitive to the physical properties of the raw material, the operation is not easy to control, the operating temperature is generally low, the tar content in the outlet synthesis gas is also considerable, a

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  • Three-stage gasification device for producing synthesis gas through biomass pyrolysis and gasification
  • Three-stage gasification device for producing synthesis gas through biomass pyrolysis and gasification

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Embodiment Construction

[0021] As shown in Figure 1, the novel three-stage pyrolysis gasification synthesis gas preparation device of the present invention includes a reaction furnace, the cylindrical lining of the reaction furnace is made of silicon carbide or corundum, and the reaction furnace includes an upper pyrolysis furnace [4], the gasification furnace in the lower section [6] and the inner annular catalyst bed in the middle section [5]. A screw feeding device is arranged on the upper part of the pyrolysis furnace [4], and the screw feeding device includes a biomass hopper [1], a screw feeder [2] and a feeding pipe [3] of the feeder, and the lower feeding pipe [3]. The feed pipe [3] is inserted into the upper pyrolysis furnace [4] of the pyrolysis gasification device, and the feed pipe [3] is provided with a nitrogen inlet. A tapered conical pipe section is set in the middle section of the upper pyrolysis furnace [4], and the angle formed with the upper pipe wall is 45° to ensure the smooth f...

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Abstract

The invention provides a three-stage gasification device for producing synthesis gas through biomass pyrolysis and gasification. The three-stage gasification device is provided with a reacting furnace as a main body, the reacting furnace is in a cylindrical or square structure, an upper pyrolysis hearth inside the reacting furnace is a biomass pyrolysis reaction chamber, a lower gasification hearth is a pyrolysis product steam fluidization and gasification chamber, and a middle hearth of the reacting furnace is provided with an annular catalyst bed layer (a catalytic pyrolysis and gasification chamber). The upper pyrolysis hearth is provided with a feeding device and communicated with the lower gasification hearth. The bottom of the lower gasification hearth is provided with a mixed gas inlet. The upper end of the furnace body of the reaching furnace is provided with a smoke outlet connected with a cyclone separator. A temperature control device is respectively and correspondingly arranged at the outer side of the reacting furnace. An experiment system for the whole production process of synthesis gas is simplified, the gas yield of a gasification furnace is increased, the quality of the synthesis gas is improved, and the tar content in the produced gas is reduced. The device provided by the invention has the advantages of convenience in temperature control, energy saving, environment friendliness, continuation in running, simple structure and the like.

Description

technical field [0001] The invention belongs to the technical field of biomass energy chemical industry, and in particular relates to a gasification device for producing syngas by three-stage biomass pyrolysis gasification. technical background [0002] Biomass is a variety of organisms formed through photosynthesis. It is directly or indirectly derived from the photosynthesis of green plants and can be converted into conventional solid, liquid and gaseous fuels. It is widely distributed and available in large quantities. It is a kind of Renewable energy, and also the only renewable natural raw material that contains hydrocarbon components and thermal energy, can be stored, uses biomass for energy utilization and chemical production, has CO 2 Characterized by zero emissions. With the decrease of traditional fossil energy reserves and the environmental pollution caused by the use of fossil energy, it has become the consensus of governments to attach importance to and develop...

Claims

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Application Information

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IPC IPC(8): C10J3/60C10J3/66C10J3/84C10J3/48C10J3/50C10J3/72
CPCY02P20/10
Inventor 孔丝纺曾辉刘阳生
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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