Distributed Control System (DCS) for Polluting EnterprisesThe technology integrates fully integrated automation and fieldbus, mainly including automatic coal blending and metering control, coke oven automatic control, gas purification and recovery control, and plant level information management subsystems. Each system can be configured separately or in combination to meet the needs of different users, and can complete the monitoring and control of the entire coking production process and the management of data information. The project support and renovation of old equipment applicable to major coking enterprises have created good economic and social benefits in production applications, and have been widely praised and supported by users.

Distributed Control System (DCS) for Polluting EnterprisesAutomatic coal blending metering control
The system can achieve precise measurement of coal blending quantity and automatic control of blending ratio through high-precision continuous dynamic electronic belt scales and speed control devices. It can store multiple sets of formulas to dynamically adjust the ratio of coal materials and record the ratio situation. It can also query the historical curve of the ratio. Real time monitoring of the driving equipment status from the coal blending of the crusher to the coal tower, including sequential start stop and interlocking alarm, shutdown and other functions. The Siemens S7 200 PLC is used to control the coal blending and belt conveyor, which has the characteristics of precision, stability, reliability and easy expansion. The system has a fieldbus communication interface that can be easily integrated with other systems.
Coke oven automatic control system

The system adopts the new generation process control system of Siemens fully integrated automation concept. The high-speed and high-capacity control station, unified top-down configuration, centralized and user-friendly human-machine interface, and integration with fieldbus technology make the system convenient for application, highly reliable, and stable.
The automatic control system of the coke oven consists of several subsystems, including automatic heating of the coke oven, interlocking control of the four coke oven cars, and pressure control of the gas collection pipe. The system has an intuitive and vivid process flow and operation screen, allowing operators to monitor the production situation intuitively, issue operation instructions, and complete real-time data collection, recording, and adjustment of various process parameters such as temperature, pressure, and flow rate on the production site. The system can provide real-time and historical curves of process parameters, as well as various production reports, alarm lists, and printing functions. System events, operation records, and historical curves can be saved for more than six months, making it easier to analyze the production process. Investigate and assess the quality of management operations. Automatic heating of coke ovens can effectively ensure the quality of coke, reduce gas consumption and environmental pollution. In response to the problems existing in the current automatic temperature control technology for coke ovens, our company has developed a new type of automatic heating control system for coke ovens in collaboration with domestic professional institutes. The system is based on system identification technology, which realizes the self correction function of the flue temperature model, enabling the flue temperature model to automatically track changes in the coke oven condition, thereby improving the reliability and accuracy of flue temperature detection; In addition, the system adopts fuzzy control algorithm, which can adjust the set values of gas flow and suction based on temperature trend, further improving the reliability and accuracy of control.
Coke oven four car interlocking monitoring and management system