Research And Realization Of Key Technologys In Cement Plant Using Waste Heat Power Generation

This paper based on a cement plant using waste heat power generation project. The design used this cement plant waste heat power generation DCS control system as the research object. According to the current actual need of waste heat power generation DCS control system. It improved the old DCS control system of cement plant waste heat power generation. This paper designed a better DCS control system of cement plant waste heat power generation.At the present stage, the domestic cement plants lack of funds and technology. Cement clinker production line with waste heat power production line are not simultaneous construction, Even the earlier construction, cement and power station belong to different industry, Different requirements of the automation technology, The DCS control system of Waste heat power generation and cement clinker production line are two completely independent systems. In addition, Steam turbine electrohydraulic control system (DEH), it is completed by turbine manufacturers. It is an independent "island" to the waste heat power generation DCS control system. Waste heat power generation and cement clinker line often drying section for a heat source In the production process. Lead to cement clinker in unstable quality, cement clinker by high energy consumption.This paper based on the design of waste heat power generation DCS control system, according to the cement plant waste heat power generation field production process characteristics, It analysis basic structure and the working principle of waste heat power generation DCS control system, Optimization scheme will use the PI control technology, This Design used PI controlloop within the controller, It controls the electric shutter valve opening based on the temperature sensor detects the temperature field real-time adjustment of boiler bypass. It will keep the material drying temperature in the reasonable scopeUsing the excess gas to generate electricity. The effective combination, which makes the whole plant efficiency is improved. This paper will usesd the MODBUS-TCP communication protocol, the turbine electrohydraulic control system (DEH) as Slave by Modbus-TCP gateway serial bus, It maked the turbine electrohydraulic control system (DEH) and waste heat generating DCS control system connection effectively, Waste heat power generation steam turbine coordination between operators more convenient. Designing of waste heat power generation control system control station programming configuration and monitoring. According to the practical application situation, This paper mproved the system deficiencies and areas.