Biomass energy circulation electrification technique as well as generating system thereof

Abstract

The invention provides a biomass energy IGCC technology which is characterized in that the technology comprises the following steps that: (1) the biomass raw material is gasified to be converted intothe combustible gas which is dedusted and decoked as well as purified and is sent to a gas internal-combustion engine to generate electricity; (2) the biomass raw material or the clinker generated inthe gasification and power generation process in the step 1 or the mixture of the two is sent to a steam boiler to be burnt in order to generate the superheated steam; the exhaust heat of the gas internal-combustion engine of the step 1 is inlet to an exhaust-heat boiler to generate the superheated steam; (3) the superheated steam generated by the steam boiler and the exhaust-heat boiler of the step2 is sent to a turbonator set. The biomass energy IGCC technology takes full advantage of the heat energy and the product generated by each processing step in the biomass energy gasification and powe r generation process and generates electricity circularly, thereby greatly raising the power generation efficiency, taking full advantage of waste materials and lowering the running cost. The invention also discloses a power generation system for realizing the biomass energy IGCC technology.

Description

technical field [0001] The invention relates to a power generation process and a power generation system thereof, in particular to a biomass energy cycle power generation process and a power generation system thereof. Background technique [0002] New energy technology is one of the most influential technologies in the world's economic development in the 21st century. Human beings will eventually rely on the development of new energy industries to solve the global energy crisis and environmental pollution problems and achieve sustainable development. Among the renewable energy encouraged by the state, the largest one is the power generation and utilization of biomass energy. my country has abundant biomass energy resources. According to estimates, my country's theoretical biomass energy resources are about 5 billion tons. At present, the available biomass energy resources are mainly biomass waste, including crop straw, chaff, firewood, industrial organic waste and municipal ...

AI Technical Summary

Problems solved by technology

[0004] (1) The utilization efficiency of the system is low, generally only about 15%. For this problem, attempts have been made to increase efficiency by adding waste heat boilers and steam turbines to generate electricity, but the system is unstable and cannot achieve results;

[0005] (2) During the process of gasification and purification, a large amount of ash, sludge, organic sewage, tar and other wastes are produced. These wastes contain high heat and are not used. Some of them are used as industrial raw materials, such as: insulation materials, steelmaking materials, etc., but most of the waste cannot be used, which seriously affects the normal operation of the power plant and also brings certain harm to the environment;

[0006] (3), the efficiency of the gas internal combustion engine power generation process is not high, generally about 30%, and most of the heat is lost from the exhaust gas and cooling water

[0007] To sum up, there are still many problems unresolved in the current medium and large biomass gasification power generation process and system. The operating cost of the power plant is too high and the efficiency is low. If the efficiency is not further improved, it will be difficult to commercialize and promote industrialization.

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