Description
Coke oven is a key in the coking industry. The temperature in the oven directly affects the quality of the refining coke. Therefore, we must ensure that the temperature in the oven is stable within a reliable range. Therefore, we must control the pressure in the coke oven flue and gas main pipe. We adopt a composite control method, that is, feedforward plus feedback/manual switching to achieve control requirements. The liquid level in the elution benzene condensate storage tank, the temperature at the top of the ammonium distillation tower and the pH value of the ammonium water are automatically adjusted. Since the SP value (set value) of many adjustment loops is an uncertain number , need to be based on different requirements in different periods; in the design of PID adjustment and manual/automatic switching, we designed the SP to track the PV when manual, and adjust the process value according to the SP value during automatic switching, so that when the operator switches from manual Switch the adjustment process value to automatic and you can adjust it immediately with this process value. It is conducive to operators to further explore ways to improve work efficiency.
On the operation interface of the operator station, trend charts of important variables such as “ammonium distillation tower bottom pressure” and “regeneration tower liquid level” are created, which is helpful for operators to intuitively observe the changing trends of important data. We use the signal sequence function to record the changing process of each operation. Its fastest scanning period is two milliseconds, so that we can clearly remember the changing sequence of data. When an accident occurs, we can refer to these data to analyze the cause of the accident. . We have also created a database to cumulatively record important variables in the process of “coal preparation”, “coke screening”, “tank area”, etc. Enterprises can analyze the production process based on the data, optimize the production process, and continuously improve efficiency.
The OPC standard software interface is designed in the system, which provides the basis for the enterprise’s on-site data management. At the same time, it provides guarantee for enterprises to realize information management.
7. Summary
Now the plant has been put into production. According to the design requirements, the entire system is designed to produce 1 million tons of coke per year. The DCS control system provides guarantee for achieving this goal. The ABB AC800F distributed control system operates stably and reliably, and at the same time brings convenience to the enterprise’s information management. Practice has proven that the DCS control system has made contributions to improving labor productivity, improving product quality, and avoiding accidents. It has brought considerable economic benefits to the enterprise and achieved user satisfaction.
Excitation system ABB module 5SHY4045L0006 3BHB030310R0001
Excitation system ABB module 5SHY4045L0006 3BHB030310R0001
Excitation system ABB module 5SHY4045L0006
Excitation system ABB module 5SHY4045L0004 3BHB021400R0002
Excitation system ABB module 5SHY4045L0004 3BHB021400R0002
Excitation system ABB module 5SHY4045L0004 3BHB021400R0002
Excitation system ABB module 5SHY4045L0004
Excitation system ABB module 5SHY4045L0003 3BHB021400
Excitation system ABB module 5SHY4045L0001 3BHB018162R0001
Excitation system ABB module 5SHY4045l0001 3BHB018162R0001
Excitation system ABB module 5SHY4045L0001
Excitation system ABB module 5SHY35L4522
Excitation system ABB module 5SHY35L4521
Excitation system ABB module 5SHY35L4520 5SXE10-0181
Excitation system ABB module 5SHY35L4520
Excitation system ABB module 5SHY35L4520
Excitation system ABB module 5SHY35L4512
Excitation system ABB module 5SHY35L4510 IGCT模块驱动板
Excitation system ABB module 5SHY35L4510 3BHE014105R0001
Excitation system ABB module 5SHY35L4510
Excitation system ABB module 5SHY35L4510
Excitation system ABB module 5SHY35L4503 3BHB004693R0001
Excitation system ABB module 5SHY3545L0020 3BHE014105R0001
Excitation system ABB module 5SHY3545L0020
Excitation system ABB module 5SHY3545L0020
Excitation system ABB module 5SHY3545L0020
Excitation system ABB module 5SHY3545L0016 3BHB020720T0002
Excitation system ABB module 5SHY3545L0016 3BHB020720R0002
Excitation system ABB module 5SHY3545L0016 3BHB019719R0101
Excitation system ABB module 5SHY3545L0016 3BHB019719R0101
Excitation system ABB module 5SHY3545L0016
Excitation system ABB module 5SHY3545L0016
Excitation system ABB module 5SHY3545L0014
Excitation system ABB module 5SHY3545L0014
Excitation system ABB module 5SHY3545L0010/3BHB013088R0001
Excitation system ABB module 5SHY3545L0010 3BHB13088R0001
Excitation system ABB module 5SHY3545L0010 3BHB013088R0001
Excitation system ABB module 5SHY3545L0010 3BHB013088R0001
Excitation system ABB module 5SHY3545L0010 3BHB013088R0001
Excitation system ABB module 5SHY3545L0010 3BHB009681R0101
Excitation system ABB module 5SHY3545L0010
Excitation system ABB module 5SHY3545L0010
Excitation system ABB module 5SHY3545L0009 3BHB013085R0001
Excitation system ABB module 5SHY3545L0009 3BHB013085R0001
Excitation system ABB module 5SHY3545L0009 3BHB013085R0001
Excitation system ABB module 5SHY3545L0009
Excitation system ABB module 5SHY3545L0009
Excitation system ABB module 5SHY3545L0005 3BHB004692R0001
Excitation system ABB module 5SHY3545L0005
Excitation system ABB module 5SHY3545L0003 3BHB004692R001
Excitation system ABB module 5SHY3545L0003
Excitation system ABB module 5SHY3545L0002 3BHE009681R0101
Excitation system ABB module 5SHX26L4520
Excitation system ABB module 5SHX26L4520
Excitation system ABB module 5SHX2645L0004 3BHB003154R0101
Excitation system ABB module 5SHX2645L0004
Excitation system ABB module 5SHX2645L0004
Excitation system ABB module 5SHX2645L0004
Excitation system ABB module 5SHX2645L0002 3HB012961R0001
Excitation system ABB module 5SHX2645L0002 3BHB012961R0001
Excitation system ABB module 5SHX2645L0002
Excitation system ABB module 5SHX1960L0006 3BHB016120R0002
Excitation system ABB module 5SHX1960L0004 3BHL000390P0104
Excitation system ABB module 5SHX1960L0004 3BHL000390P0104
Excitation system ABB module 5SHX1960L0004
Excitation system ABB module 5SHX1960L0004
Excitation system ABB module 5SHX14H4502 3BHB003230R0101
Reviews
There are no reviews yet.