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Fixed Bed Gasifier
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Product: Views:189Fixed Bed Gasifier 
Unit price: Negotiable
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Valid until: Long-term effective
Last updated: 2017-10-31 01:19
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Biomass fixed bed gasifier:

Fixed bed is a kind of traditional gasification reactor, and its operating temperature is generally around 1000C.Fixed bed gasifier is divided into countercurrent (Counter ~ current) and current (Concurrent).The flow of gasification raw material and gasification medium in bed is the opposite of the flow direction of gasification material.And parallel flow gasifier is refers to the gasification raw material the same as the gasification medium flow direction in the bed of these two kinds of gasifier in the direction of the flow gasification medium under different respectively called on gas type, gas type gasifier.The operation process of the air - type fixed bed biomass gasifier is introduced.

In the gas-type fixed bed gasifier, the raw material from the feeding device from the upper part of the gasifier is delivered to the furnace, and the entire material layer is supported by the furnace grate at the lower part of the furnace.Gasification agent from the furnace bottom air entering the furnace mouth, by the grate gap evenly distributed and penetrate into the bottom area of the ash layer, gasification agent and ash for heat exchange, gasification agent is preheating, ash is cooled.The vaporizers then rise to the burning layer, which reacts with the carbon in the combustion layer gasification agent and the raw material, releasing a lot of heat.Can make the furnace temperature of 1000 ℃, the heat can maintain a gasifier gasification reaction heat required.The air flow then rises to the reduction layer, which is reduced to CO by the CO2 generated from the combustion layer.Decomposition of water vapour in the gasification agent, these gases H2 and CO2 generated with gasification agent did not response part continues to rise, the upper layer of raw materials, heating pyrolysis in the raw material layer, removing volatile, the generated coke fell into reduction zone.The generated gas continues to rise, and the raw material of the furnace is preheated and dried, and then it enters the upper part of the gasifier, which is derived from the gas outlet of the gasifier.

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