Technology of Mass Biomass Updraft Fixed Bed Gasification for Cogeneration of Electricity, Charcoal and Heat

Abstract

A block biomass up-suction fixed-bed gasification process for power generation and co-production of electricity, charcoal and heat. The hot gas obtained from the block biomass up-suction fixed-bed gasification is used as the fuel for the boiler, and the steam generated by the boiler drives The steam turbine generates electricity and obtains charcoal and heat at the same time. The process includes the following steps: the collection, chipping or crushing of biomass raw materials; the bulk biomass raw materials are sent to the up-suction fixed-bed gasifier for gasification; Hot gas; the hot gas is supplied to the gas-fired boiler through the burner to generate medium-temperature and medium-pressure steam; the biomass charcoal is cooled and collected through the collection system; the steam generated by the boiler drives the steam turbine for power generation, heat supply and its auxiliary systems. The present invention uses blocky biomass as raw material, which is beneficial to the resource utilization and environmental protection of agricultural and forestry processing residues. Its process operation is stable, the thermal efficiency of hot gas combustion is high, the products are diverse, the economic benefits are good, and it can be applied on a large scale. The updraft fixed bed gasification power generation process does not produce biochar products.

Description

technical field [0001] The invention relates to a technique for block biomass updraft fixed-bed gasification to generate electricity, charcoal and heat, and belongs to the field of biomass energy and charcoal materials. Background technique [0002] Under the dual pressure of energy and the environment, vigorously developing clean and renewable energy has become a very urgent worldwide issue before governments all over the world. Compared with other new energy sources, biomass energy has the characteristics of being renewable, less polluting, transportable and storing, and most compatible with the current energy industry, so it has attracted special attention. China's three forestry residues are rich in resources, huge in quantity and diverse in variety. Under the background of various favorable policies, the utilization of biomass resources has achieved considerable development in China, but at the same time, many problems in technology and equipment have arisen. [0003]...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a block biomass updraft fixed-bed gasification power generation co-generation process of electricity, charcoal and heat, aiming at the deficiencies of the existing process technology and solving the problems existing in the existing process and devices, the system is stable and environmentally friendly, There is no secondary pollution, and it can better meet the requirements of large-scale promotion and use

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