Cement production line material drying temperature control method and device adopting waste heat power generation

Abstract

The invention provides a cement production line material drying temperature control method and device adopting waste heat power generation. In the method, the temperatures measured by the temperature sensors arranged at the inlets of a kiln head drying system and a kiln tail drying system are utilized to control the openings of a kiln head bypass waste gas valve and a kiln tail bypass waste gas valve. The device is mainly composed of the temperature sensors, electric louver dampers and a computer control system, wherein the temperature sensors are arranged on an inlet waste gas pipeline of the drying system, an electric louver damper is installed on a kiln tail waste gas bypass, another electric louver damper is installed in a boiler inlet waste gas bypass; and temperature signals, the valve opening and feedback signals are accessed to the computer control system, and the computer control system can control the opening of the waste gas bypass valves through the changes of the temperature signals. Compared with the traditional device adopting manual regulation, the control device provided by the invention can avoid the occurrence of the heat source fight between a clinker production line and waste heat generation, ensure the stability of the heat source of the clinker production line and reduce the operational difficulty of the operator.

Description

Technical field [0001] The invention relates to air temperature control technology, in particular to a method and device for controlling the drying temperature of materials in a cement production line with waste heat power generation. Background technique [0002] Over the past 30 years of reform and opening up, my country's cement industry has achieved world-renowned achievements. During this period, new dry process cement technology and cement pure low-temperature waste heat power generation have achieved leapfrog development. However, waste heat power generation is an auxiliary section of the cement clinker line, and it is impossible to operate independently like a traditional power station, because the heat source for power generation comes from the waste gas of the clinker cement line, and the waste gas after power generation is likely to dry materials, and the current domestic The external situation is that the cement clinker equipment and the waste heat power generati...

AI Technical Summary

Problems solved by technology

However, waste heat power generation is an auxiliary section of the cement clinker line, and it is impossible to operate independently like a traditional power station, because the heat source for power generation comes from the waste gas of the clinker cement line, and the waste gas after power generation is likely to dry materials, and the current domestic The external situation is that the cement clinker equipment and the waste heat power generation equipment are basically independent of each other, and they operate in isolation and are not interlocked. Unstable quality, decreased output, increased energy consumption of cement clinker, unstable cement quality, decreased output, etc.

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