Method for improving thermodynamic cycling quality of waste sinter heat power generation system
A technology of thermal cycle and waste heat power generation, which is applied in the direction of improving energy efficiency, process efficiency, waste heat treatment, etc. It can solve the problems of low utilization rate of sintering waste heat, only 45-60% utilization rate of sintering waste heat, and poor thermal cycle quality. , to achieve the effect of improving thermoelectric conversion efficiency, saving one-time investment, and reducing operating costs
A technology of thermal cycle and waste heat power generation, which is applied in the direction of improving energy efficiency, process efficiency, waste heat treatment, etc. It can solve the problems of low utilization rate of sintering waste heat, only 45-60% utilization rate of sintering waste heat, and poor thermal cycle quality. , to achieve the effect of improving thermoelectric conversion efficiency, saving one-time investment, and reducing operating costs
CN101699207AActive Publication Date: 2010-04-28NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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[0032] Embodiments are provided below in conjunction with the accompanying drawings to describe the present invention in detail.
[0033] A method for improving the thermal cycle quality of a sintering waste heat power generation system, which consists of the following five branch work processes:
[0034] (1) Workflow of sinter cooling waste gas: cold air exchanges heat with sinter in sinter cooler 1 to form hot waste gas, which is collected by flue gas hood 2 and enters waste heat boiler 4 through the flue. After exchanging heat with the working medium in 4, waste heat boiler exhaust smoke is formed. The waste heat boiler exhaust smoke is drawn out by the waste heat boiler induced draft fan 5 and then divided into two paths. One path enters the blast furnace gas boiler burner 10 for combustion support through the blast furnace gas boiler blower 26, and the other path The exhaust gas enters the sinter cooler 1 through the exhaust gas circulation fan 3 for exhaust gas circulati...
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The invention relates to the technical field of waste heat power generation, in particular to a method for improving the thermodynamic cycling quality of a waste sinter heat power generation system. The method comprises the following steps of: coupling the thermodynamic cycle of waste sinter heat power generation with the thermodynamic cycle of conventional blast furnace gas power generation, using a waste heat boiler as an external economizer of a blast furnace gas boiler; mixing saturated water generated by the waste heat boiler with hot water generated by an internal economizer of the blast furnace gas boiler and directly delivering the mixed water to a steam manifold of the blast furnace gas boiler; performing evaporation and superheating on the mixed water in the blast furnace gas boiler and allowing the mixed water to enter a steam turbine to apply work; and dividing the discharged smoke of the waste heat boiler into two parts, wherein one part is recycled as waste gas and is returned to a fan of a sinter cooler, while the other part enters the blast furnace gas boiler to support the combustion of fuels. The method utilizes the thermodynamic cycle of thermal power generation to develop the thermodynamic cycle of the waste heat power generation, solves the problems of poor stability and low thermo-electric conversion efficiency in the prior low-temperature waste sinter heat power generation system, and greatly improves the thermodynamic cycling quality of the waste heat power generation.
Description
Technical field: [0001] The invention relates to a method for improving the thermal cycle quality of a sintering waste heat power generation system, in particular to a method for improving the thermal cycle quality of a sintering waste heat power generation system by coupling the sintering waste heat power generation system with a conventional blast furnace gas power generation system. Background technique: [0002] At present, the known sintering waste heat power generation systems all adopt the thermodynamic cycle mode of pure low-temperature waste heat power generation. The pure low-temperature waste heat power generation system uses sintering waste gas as a single heat source to heat water into steam to drive the steam turbine to do work. Due to the characteristics of low temperature and large fluctuation of sintering waste heat, compared with the thermal cycle of conventional thermal power generation system, the quality of thermal cycle of sintering pure low-temperature ...
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Patent Timeline
28 Apr 2010
Publication
CN101699207A
- IPC
- F27D17/00; F01K11/02; F01K27/02
- CPC
- Y02P10/25
- Inventors
- 王子兵; 张玉柱