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Biomass energy circulation electrification technique as well as generating system thereof

A technology of biomass energy and cycle power generation, which is applied in the direction of biofuel, fuel oil system, petroleum industry, etc., can solve the problems of low system utilization efficiency, high power plant operating cost, high heat, etc., to reduce system investment and water pump operating cost, The effect of increasing waste heat power generation and reducing cooling water

Inactive Publication Date: 2008-08-27
黄家笙 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Biomass energy circulation electrification technique as well as generating system thereof
  • Biomass energy circulation electrification technique as well as generating system thereof
  • Biomass energy circulation electrification technique as well as generating system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 of the present invention is as figure 1 As shown in Figure 3, the present invention can be promoted and applied by cooperating with large-scale rice factories to build power plants or building biomass power plants in grain production bases. The scale of power plants can be selected according to the local biomass resources. Generally, there are two types of 5MW and 10MW. specification.

[0038] The biomass energy power generation process of this embodiment includes the following steps:

[0039] (1) The biomass raw materials are processed, such as crushing plant straw raw materials, and the chaff raw materials can be used directly, and then the biomass raw materials are gasified, that is, the solid biomass is converted into combustible gas. The main components of these combustible gases Ingredients are CO, H 2 , CH 4 , CO 2 Etc., the gasified gas also contains certain impurities, such as ash, coke, a small amount of tar, etc.; after dust removal, coke removal and p...

Embodiment 2

[0046] Example 2 of the present invention is as Figure 4 As shown in ~7, the difference from the previous embodiment is that in the process of biomass power generation, in step 2, the high-temperature gas waste heat at the outlet of the gasifier 11 is first sent to the heat exchanger 18 to produce soda The steam-water mixture is then sent to the waste heat boiler 9 or the steam boiler 21, or sent to the waste heat boiler 9 and the steam boiler 21 for combustion to further generate superheated steam, and then transfer to step 3 to promote the steam turbine generator set to generate electricity;

[0047] In step 2, the dry ash generated after gasification of the biomass raw material and the wet ash generated after purification of the combustible gas are mixed first, and then sent to the steam boiler 21 for combustion;

[0048] In step 2, when necessary, the biomass raw material and ash are mixed and burned directly in the steam boiler 21 to generate superheated steam;

[0049] Conve...

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PUM

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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 into the 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 in the 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 step 2 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 power 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] As one of the most influential technologies in the development of the world economy in the 21st century, new energy technology 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 sources encouraged by the state, the largest piece 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 biomass energy resources available for development are mainly biomass wastes, including crop straw, chaff, firewood, industrial organic waste a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B43/10F02B63/04F01K11/02F01K17/04F22G1/12F22D11/06C10B53/02
CPCY02E20/14Y02E50/10Y02P20/129Y02T10/12Y02T10/30
Inventor 黄家笙林文彬
Owner 黄家笙
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