Cement kiln head waste heat power generation method and system

Abstract

The invention relates to a cement kiln head waste heat power generation method and system. The waste heat power generation system comprises a grate cooler, a kiln head AQC furnace, a high temperature superheater boiler and a connecting air hose, wherein a high temperature extract opening and a medium temperature extract opening which are connected with a high temperature air hose and a medium temperature air hose are formed in the grate cooler, the kiln head AQC furnace is communicated with the medium temperature air hose through pipelines, a high temperature superheater boiler air inlet and a high temperature superheater boiler air outlet are formed in the high temperature superheater boiler, the high temperature superheater boiler air inlet is connected with the high temperature air hose through a pipeline, the high temperature superheater boiler air outlet is communicated with the kiln head AQC furnace through a pipeline, one end of the connecting air hose is communicated with the high temperature air hose, and the other end of the connecting air hose is communicated with the medium temperature air hose. According to the method and system, the connecting air hose is arranged between the high temperature air hose and the medium temperature air hose, the sufficient and surplus air temperature in the high temperature section is led to the medium temperature section for use, the design technology that the high temperature and the medium temperature are used separately is broken, utilization of a heat source is more reasonable, and the work efficiency of the kiln head AQC furnace is greatly improved.

Description

technical field [0001] The invention relates to the technical field of power generation with waste heat in cement production, in particular to a method and system for power generation with waste heat in a cement kiln head. Background technique [0002] In the conventional cement waste heat power generation system, the pure low-temperature waste heat power generation process is generally adopted, that is, the AQC boiler located at the kiln head is divided into two heat sources of high temperature and medium temperature. Among them, the high temperature heat source first passes through the ASH superheater (high temperature superheater boiler) , and then into the AQC boiler, the medium-temperature heat source does not need to pass through the ASH superheater, and the high-temperature heat source and the medium-temperature heat source are used separately. [0003] However, this design has the problems of low valve opening in the high temperature section, low inlet temperature in...

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Problems solved by technology

[0004] Based on this, it is necessary to provide a cement kiln head waste heat power generation method and system for the above-mentioned problem of low work efficiency of the kiln head boiler

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