Biomass horizontal pyrolysis gasifier

Abstract

The invention discloses a biomass horizontal pyrolysis gasifier. The structure of the biomass horizontal pyrolysis gasifier comprises a furnace body (1), a feed inlet (8), a gas nozzle (9), an air inlet (5) and an ash discharge opening (7). The feed inlet is arranged at the rear end of the furnace body. The furnace body (1) is a sandwich structure, wherein an inner cavity of the sandwich structure is a gasifying chamber (11), and the middle part of the sandwich structure is an air inlet chamber (12). The feed inlet (8) and the gas nozzle (9) are communicated with the gasifying chamber. The air inlet (5) is communicated with the air inlet chamber (12). The bottom of the furnace body is provided with a feed delivery mechanism (4). The gasifying chamber (11) and the air inlet chamber (12) are communicated with each other at the position of the feed delivery mechanism. According to the biomass horizontal pyrolysis gasifier, by introducing cold air into the air inlet of the sandwich structure, the furnace wall and a reciprocating grate are cooled, and heat-absorbed hot air also can flow upwards from the bottom of a feed layer through the reciprocating grate. By an up-to-bottom counter-burning mode, the feed layer will not be overlapped or mixed during operation of the reciprocating grate, multiple tower-type feed layers are formed to undergo continuous pyrogasification, and safe and stable operation can be carried out on the grate.

Description

technical field [0001] The invention relates to biomass energy equipment, more specifically to a horizontal biomass cracking gasifier. Background technique [0002] The high-temperature gasification chamber or furnace of common fixed-bed biomass gasification or semi-gasification furnace, common oxygen-limited combustion gasification from bottom to top, the upper part is fed with carbon layer covered with high-temperature combustion, the material layer is unstable, and wind And water vapor as a combustion support, the grate burns continuously in the high temperature area, easy to deform, crack and oxidize, the wind or water vapor rapidly reduces the temperature in the high temperature area, the carbon layer cannot be completely burned, affects the thermal efficiency, and reduces the calorific value of the gas. The vertical fixed bed furnace is limited by the inner diameter, which affects the gas production rate and gas production volume. Contents of the invention [0003] ...

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Problems solved by technology

[0002] The high-temperature gasification chamber or furnace of common fixed-bed biomass gasification or semi-gasification furnace, common oxygen-limited combustion gasification from bottom to top, the upper part is fed with carbon layer covered with high-temperature combustion, the material layer is unstable, and wind And water vapor as combustion support, the grate burns continuously in the high temperature area, easy to deform, crack and oxidize, the wind or water vapor rapidly reduces the temperature in the high temperature area, the carbon layer cannot be completely burned, affects the thermal efficiency, and reduces the calorific value of the gas

The vertical fixed bed furnace is limited by the inner diameter, which affects the gas production rate and gas production volume

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