A cloth feeding device and a biomass gasification furnace

Abstract

The invention discloses a distributing and feeding device. The distributing and feeding device comprises a closed feeding barrel, wherein a rotary scraping component is arranged in the feeding barrel;two or more than two laminates for receiving a material are sequentially arranged on the inner side wall of the feeding barrel from top to bottom; a dispersing component which rotates together with the rotary scraping component is arranged below the rotary scraping componnet; the internal space of the barrel is partitioned through the laminates layer by layer, so that the path along which a gas overflows upwards to pass through the material is prolonged, the material fully absorbs heat of the gas, and the overflow capability of the gas is reduced. As a sealing effect is achieved during feeding, the material can be continuously added into the barrel through the structure without worrying about gas leakage in the adding process. The material on the laminates is uniformly scraped to enter acharging barrel below through rotation of the scraping component and appropriate material holes in the laminates. Besides, the dispersing component is arranged to fully guarantee that the fed materialis uniformly distributed along the rotating axis. The invention further discloses a biomass gasifier.

Description

technical field [0001] The invention relates to the technical field of biomass thermochemical conversion equipment, more specifically, to a material distribution and feeding device, and also to a biomass gasifier. Background technique [0002] Existing biomass gasifiers are generally divided into fixed bed gasifiers and fluidized bed gasifiers. The feeding methods of these two gasifiers are different. The fluidized bed gasifier feeds the material in the middle of the furnace body, and then is blown upward by the air flow (that is, fluidized), and the material is heated, cracked and gasified in a fluidized state; the fixed bed gasifier feeds the material at the top of the furnace body, The materials are piled up in the furnace, and are heated, cracked and gasified in the process of descending layer by layer. [0003] Generally, small fixed-bed gasifiers have a diameter of less than 1 meter, generally work discontinuously, and face fewer feeding problems. However, large-sca...

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Problems solved by technology

[0004] In the prior art, the following types of material feeding designs are generally adopted: one is to use a bucket conveyor to feed material one by one, and the feeding is discontinuous, which affects the production process; there are also some biomass gasifiers that use belt conveyors for feeding , the sealing is not good, and the gas in the furnace is easy to leak; other biomass gasification furnaces use screw conveyors to feed materials. Although the sealing is better, when the diameter of the furnace body is large, the materials are always fed at the same position. Uneven distribution on the entire cross-section of the furnace body affects the gasification effect

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