Biomass pyrolysis and gasification poly-generation system and method

Abstract

The invention discloses a biomass pyrolysis and gasification poly-generation system and method. The biomass pyrolysis and gasification poly-generation system comprises a biomass collection and arrangement device for classifying, arranging and pretreating biomass raw materials, a biomass gasification device for pyrolyzing and gasifying biomass raw materials, and a biomass boiler; one part of combustible gas generated by pyrolysis and gasification is directly used for combustion of the biomass boiler; generated steam is used for power generation of a steam turbine generator unit; the rest combustible gas enters a gas purification device to be purified, and after impurities are removed, the rest combustible gas is used for power generation of an internal combustion engine generator set; solidsubstances generated by pyrolysis and gasification form biomass charcoal or fertilizers; waste heat of cooling water of pyrolysis gasification is recycled through the gasification furnace cooling water utilization device, the steam turbine generator unit and the internal combustion engine generator unit generate electricity and then the electricity is fed into a public power grid, hot water generated by the steam turbine generator unit is utilized through a heat supply utilization device, and waste heat of cooling water of the internal combustion engine generator unit is recycled through a generator cooling water heat utilization device. The method can be widely applied to the field of biomass utilization.

Description

technical field [0001] The invention belongs to the technical field of biomass utilization, and relates to a biomass pyrolysis gasification polygeneration system; in addition, the invention also relates to a biomass pyrolysis gasification polygeneration method. Background technique [0002] Since ancient times, biomass has been one of the important energy sources that people rely on for survival and development. With the development and utilization of coal and oil and gas resources, people have gradually reduced the use of biomass resources; but with the gradual depletion of petrochemical resources , Biomass utilization technology once again highlights its inherent value. The current utilization of biomass has always been in a relatively simple and low-level state; the utilization method mainly based on combustion will not only cause low utilization efficiency, but also cause pollution to the environment. Therefore, it is of great significance to my country's energy strateg...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a biomass utilization pyrolysis gasification coupling integrated polygeneration system and process to solve the problems of low energy utilization efficiency, thermal Solve the problem of difficult utilization of semi-coke, realize the rational allocation of fertilizer, charcoal, electricity and heat, and achieve the goals of energy saving, emission reduction and product benefit maximization

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