The hottest sunytdcs9200 distributed control syste

2022-09-29
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Application of sunytdcs9200 distributed control system in waste incineration power generation

1 Overview

incineration is a municipal waste treatment technology widely used all over the world. The most important task of waste incineration is to completely burn off flue gas and solid waste - fly ash and residues as much as possible, which destroys the existing organic components and does not produce new harmful components such as dioxin and furan. At the same time, appropriate measures (such as staged combustion) should be taken to reduce the concentration of nitrogen oxides and reduce the amount of dust as much as possible

the large-scale waste incineration treatment system equipped with heat energy recovery and utilization devices is gradually rising to the mainstream of incineration treatment because it complies with the requirements of recycling energy. Foreign industrial developed countries are generally committed to promoting the application of waste incineration technology. The wide application of incineration technology abroad, in addition to the economic development, strong investment and high calorific value of waste, mainly lies in the maturity and advancement of incineration technology and equipment. At present, foreign industrial developed countries are mainly committed to improving the original incineration devices and developing new incinerators to make them develop in the direction of high efficiency, energy saving, low cost and low pollution, and the degree of automation is getting higher and higher. With the acceleration of urbanization in China, garbage pollution has become increasingly serious, and has become one of the important factors restricting the survival and development of cities. With the Chinese government strengthening the treatment of waste pollution, the waste incineration industry is becoming increasingly important

2. Process introduction

rotary hearth waste gasification and incineration is a widely used waste incineration technology at present. Garbage is dried and pyrolyzed in an inclined adiabatic rotary kiln. In this process, an appropriate amount of hot air is supplied. The hot air can not only provide heat for garbage drying and pyrolysis, but also the oxygen in the hot air can react with the combustible gas generated by pyrolysis. The heat generated by the reaction increases the temperature of the rotary kiln, so that the subsequent pyrolysis can be continuously and fully characterized by load displacement, load time, displacement time Stress-strain load (2) point extension diagram. The rotation of the rotary kiln makes the garbage in the furnace tumble continuously along the furnace wall, making the drying and pyrolysis of garbage uniform, fast and complete combustion

the heat generated in the waste combustion process is absorbed by the water in the boiler and vaporized into high-pressure steam, which drives the turbine to rotate at high speed to achieve the purpose of power generation

rotary hearth garbage gasification incineration power generation project mainly includes the following devices:

garbage pretreatment

negative pressure closed garbage warehouse

rotary kiln and waste heat boiler

flue gas purification device

steam turbine generator set

transmission and distribution system

3 System configuration

sunytdcs9200 is a fully intelligent, fully isolated distributed control system independently developed and produced by Zhejiang University zhongzi company, which realizes process control, logic control, sequence control and other functions; Modular flexible design; Provide open data interface, fieldbus and interconnection access; Conforming to the development trend of the times and absorbing the latest electronic technology, network technology and control technology, it has the characteristics of high reliability, open system, flexible composition, friendly interface, powerful function and simple maintenance

The function of sunytdcs9200 distributed control system is to monitor the process parameters and status of the above devices, and realize the functions of status monitoring, operation, process control, event alarm, interlock protection, etc. in the whole production process according to the established control scheme

in the waste incineration power plant, the configuration of sunytdcs9200 distributed control system needs to be configured according to the scale of the device and the automation level to be achieved. For a 680t/d waste incineration power plant, if a higher level of automation is required, including margin, the total number of i/o points of the control system is 518. To this end, the following system configuration is formed:

4 System function

the control station is responsible for collecting the process parameters measured by field transmitters and sensors, processing the data according to the control scheme, and sending the processing results to the field actuator to realize the control and protection of the production process. The operation station realizes the status monitoring, control operation, data recording and other functions of the production process, restricts the operation of different levels of personnel by setting passwords, and different operation stations realize the monitoring of different production devices. The engineer station mainly completes the hardware configuration and software configuration of sunytdcs9200 distributed control system in the project implementation stage. During normal production, in addition to all functions of the operation station, it can also realize system diagnosis, maintenance and other functions. The main function of the data server is to collect and sort out important production data, such as electricity parameters, and record and send them to the relevant management departments as the decision-making basis for the management departments to guide production

in addition, the system is also equipped with two printers. One of them is called real-time printer, which is used to print real-time information such as alarm and operation. The other is a printer with larger axial tension for reports, which is used to print shift reports, tables and monthly reports. It can also print historical records or historical data for production managers to analyze the operation status of the device

in the process of waste incineration power generation, no matter how complex the control function is, it is realized by sunytdcs9200 distributed control system. However, according to its different role in the incineration power generation device, its functions can be divided into the following modules:

· Das: data acquisition system, which completes the data acquisition and display of process parameters in the production process

· MCS: analog control system, which completes the automatic control of temperature, pressure, flow and other analog parameters

· SCS: the sequence control system enables the device to complete the production and shutdown tasks in the specified sequence, and complete the safety protection and mutual standby of the equipment during normal production

· FSSS: boiler safety monitoring system, which completes the safety protection of the boiler system

· ETS: steam turbine protection system, which completes the automatic safety monitoring and protection of steam turbine

· ECS: electrical control system, which completes the collection and sorting of generator safety protection and electrical parameters, and realizes automatic parallel control

· des: data interaction system, which realizes the data exchange between sunytdcs9200 distributed control system and third-party intelligent equipment, and between dispatching management departments

5. Conclusion

with the development of China's economy and the improvement of people's living standards, the content of combustibles and combustibles in urban garbage has increased significantly, and the calorific value has increased significantly. Generally, after pretreatment such as classification and sorting, the calorific value of garbage has been close to that of urban garbage in developed countries. Waste incineration power generation not only realizes waste reduction and harmless treatment, but also generates new energy. Therefore, some cities in China, especially the economically developed coastal areas, have the foundation to develop waste incineration power generation technology. Garbage incineration power plants have stable income, low operating costs and enjoy certain preferential tax policies, which can bring stable and high returns to investors

at present, many domestic waste incineration plants rely on manual operation for a long time due to low automation level, which not only has low efficiency and incomplete combustion, but also makes workers vulnerable to virus infection due to exposure to waste and other pollutants, resulting in weakened physical fitness and even disease. The solution developed by Zheda zhongzi company for the processing technology of rare earth doped optical fibers and high-density ceramic materials for optical fiber connectors can comprehensively improve the automation level of the device, ensure the safe, reliable and efficient operation of the device and the health of workers, and then improve the power generation on the premise that the garbage is completely burned. (end)

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