Improved waste heat power generation system for cement industry

Abstract

The invention discloses an improved waste heat power generation system for the cement industry. The improved waste heat power generation system comprises a clinker cooler, a kiln front boiler, a kiln tail boiler and a steam turbine, wherein the kiln front boiler and the kiln tail boiler respectively comprise an evaporator, a superheater and a steam pocket. Flue gas generated by the clinker cooler is respectively conveyed to the kiln front boiler and the kiln tail boiler, the kiln front boiler and the kiln tail boiler are respectively provided with a vertical structure, and the kiln front boiler and the kiln tail boiler share an economizer and a high-temperature superheater. Preheated water is respectively conveyed to the kiln front boiler and the kiln tail boiler by the economizer, the steam temperature of the kiln front boiler and the kiln tail boiler is adjusted by the high-temperature superheater, steam conveyed into the steam turbine is low in temperature difference or the same in temperature, the waste heat power generation system is small in occupied area, convenient to arrange, high in boiler heat efficiency and economical, and the kiln front boiler is low in abrasion.

Description

[0001] technical field [0002] The invention relates to a power generation system, in particular to an improved waste heat power generation system for cement industry. [0003] Background technique [0004] In the cement production industry, it is very common to use the waste heat generated in the production of cement to generate electricity. For example, a cement kiln waste heat power generation system announced in Chinese Patent No. 200720038566.9, in this cement waste heat power generation system, the air intake of the kiln head boiler 13 is a top-down air intake method, which is not conducive to the flue gas The reduction of solid particles makes it difficult to reduce the wear of solid particles in the flue gas on the kiln head boiler. The middle part of the clinker cooler 1 is provided with only one air outlet 5, and the resistance of flue gas removal is large, which is not conducive to the removal and utilization of high-heat flue gas, resulting in low heat exchang...

AI Technical Summary

Problems solved by technology

For example, a cement kiln waste heat power generation system announced in Chinese Patent No. 200720038566.9, in this cement waste heat power generation system, the air intake of the kiln head boiler 13 is a top-down air intake method, which is not conducive to the flue gas The reduction of solid particles makes it difficult to reduce the wear of solid particles in the flue gas on the kiln head boiler

In the middle of the clinker cooler 1, there is only one exhaust port 5, which has a large resistance to exhaust gas, which is not conducive to the exhaust and utilization of high-heat flue gas, resulting in low heat exchange efficiency and stability of the system

In addition, the cement kiln waste heat power generation system is not economical

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