Downdraft gasifier

A gasifier and downdraft technology, applied in the field of downdraft gasifiers, can solve the problems of uniform exhaust temperature and uneven reaction, and achieve the effects of uniform placement, stable components, and avoiding uneven air supply

Pending Publication Date: 2021-10-26
胡红萍
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the shortcomings in the use of the existing downdraft gasifier proposed in the background technology, the present invention provides a downdraft gasifier, which has the advantages of uniform

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0021] see Figure 1-5 , a downdraft gasifier, comprising a furnace body 1, an oxidation zone 2 is provided inside the furnace body 1, a reduction zone 3 is provided below the oxidation zone 2, and a lower whole plate 4 is fixedly installed inside the reduction zone 3, and the oxidation The interior of the zone 2 is fixedly equipped with an upper whole plate 5, and the two sides of the oxidation zone 2 are provided with an air intake pipe 6, and the air ...

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Abstract

The invention relates to the technical field of biomass gasification furnaces, and discloses a downdraft gasification furnace which comprises a furnace body, an oxidation zone is arranged in the furnace body, a reduction zone is arranged below the oxidation zone, a lower neatening plate is fixedly mounted in the reduction zone, an upper neatening plate is fixedly mounted in the oxidation zone, and gas inlet pipes are arranged on the two sides of the oxidation zone. According to the invention, the upper and lower neatening plates are arranged in the oxidation zone and the reduction zone, materials from a cracking zone are uniformly distributed in a neatening cavity, then the cavity for airflow flowing is arranged on the outer side of the neatening cavity, and air holes in the cavity are utilized to uniformly distribute air from multiple angles from the top and the peripheral side of a carbon block, and thus the internal oxidation-reduction reaction of the neatening plates is ensured to be carried out uniformly and thoroughly, the incomplete reaction caused by non-uniform air supply is avoided, the temperature of discharged gas is uniform, the condition of non-uniform drying of a drying area caused by non-uniform temperature is avoided, meanwhile, the components of the discharged gas are stabilized, and the gas quality is improved.

Description

technical field [0001] The invention relates to the technical field of biomass gasifiers, in particular to a downdraft gasifier. Background technique [0002] The air of the downdraft gasifier is blown in from the air nozzle on the side wall of the gasifier to produce gas; the flow direction is the same as the falling direction of the material, so it is also called a down-flow gasifier. The materials are mixed and burned in the oxidation zone, and the heat generated is used for the cracking of the material in the pyrolysis zone and the reduction reaction in the reduction reaction zone. The reduction reaction is located below the oxidation reaction, and the carbon, carbon dioxide and water vapor produced by the oxidation reaction react in this area. , the hot gas flow generated in the reduction zone will also pass through the pyrolysis zone and the drying zone, and conduct heat exchange through the heat conduction fins for cracking and drying. [0003] Due to the poor air su...

Claims

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Application Information

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IPC IPC(8): C10J3/26C10J3/72C10J3/66
CPCC10J3/26C10J3/725C10J3/66
Inventor 胡红萍
Owner 胡红萍
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