Fluidized-bed Gasifier

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    2017-10-01 17:50

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Qingdao Kexin New Energy Technology Co.,Ltd
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No. 3 Shengda East Road Pingdu Qingdao City, Shandong Province



Product Details

Fluidized bed biomass gasifier:

Fluidized bed combustion is an advanced combustion technology which has been successfully applied to biomass combustion, but for biomass gasification is still a new topic.Compared to a fixed bed.The fluidized bed has no grate, and a simple fluidized bed is composed of combustion chamber and cloth wind plate. Gasification agent is entered into the fluidized bed reactor by the cloth wind plate.The fluidized bed is divided into bubbling fluidized bed and circulating fluidized bed according to different gas-solid flow characteristics.The air flow velocity in the bubbling fluidized bed gas furnace is relatively low, and almost no solid particles escape from the fluidized bed.The flow rate of the circulating fluidized bed gas furnace is relatively high, and the particles from the fluidized bed are collected by cyclone separator and then sent to the furnace for gasification reaction.Fluidized bed gasifier has good mixing characteristics and high gas and solid reaction rate.

In the process of biomass gasification, the fluidized bed is first heated to the operating temperature, and the bed material absorbs and stores the heat.Drum of gasifier the proper amount of air through the cloth wind plate uniform distribution after the bed material fluidization, bed material of turbulent flow and mixing the whole bed to maintain a constant temperature when the appropriate size of biomass fuels by feeding device is added to the fluidized bed, mixed with high a hotbed of material quickly, within a certain space in ventilation board more fierce, under the condition of normal pressure quickly complete drying, pyrolysis, combustion and gasification reaction process, under the condition of isothermal realization of energy conversion, to make the fuel gas required.The high heat capacity of the bed material itself is like a heat word speedometer, which allows the biomass gasifier to redrive after a full night without the external heat.Due to the large heat capacity of the bed, even the fuel with high water content can be directly gasified.By controlling the operation parameters, the fluidized bed temperature can be kept below the slag temperature, so that the bed layer can be kept equal to the same temperature, so that the local combustion temperature can be avoided.Fluidized bed gasifier gasification intensity is high, people furnace can strictly control the amount of fuel and air volume, and is very suitable for large industrial gas supply system, and gas calorific value can be adjusted within the scope of certain and arbitrarily.Therefore, fluidized bed reactor is a better choice for biomass gasification and transformation, especially for the lower melting point.