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.
Control module DCS system spare parts EI802F
Control module DCS system spare parts EI801F
Control module DCS system spare parts EHDB280-21-11
Control module DCS system spare parts EHDB280
Control module DCS system spare parts EHDB280
Control module DCS system spare parts EHDB220-21-11
Control module DCS system spare parts EHDB130
Control module DCS system spare parts EHDB130
Control module DCS system spare parts EH450C-1
Control module DCS system spare parts E5EAA HENF105240R1
Control module DCS system spare parts E3ES
Control module DCS system spare parts E3EP HENF315276R1
Control module DCS system spare parts E3EFa HENF452750R1
Control module DCS system spare parts E3EC HENF315125R1
Control module DCS system spare parts E3EB HENF315129R1
Control module DCS system spare parts DX910S
Control module DCS system spare parts DX910S
Control module DCS system spare parts DX910N
Control module DCS system spare parts DX910B
Control module DCS system spare parts DX731F
Control module DCS system spare parts DX722F
Control module DCS system spare parts DX581-S
Control module DCS system spare parts DSVC113
Control module DCS system spare parts DSU462
Control module DCS system spare parts DSU461
Control module DCS system spare parts DSU451
Control module DCS system spare parts DSU45
Control module DCS system spare parts DSU223
Control module DCS system spare parts DSU14
Control module DCS system spare parts DSU14
Control module DCS system spare parts DSU10
Control module DCS system spare parts DSU10
Control module DCS system spare parts DSTYW121 3BSE007836R1
Control module DCS system spare parts DSTXN001-0
Control module DCS system spare parts DSTX170
Control module DCS system spare parts DSTX152
Control module DCS system spare parts DSTX151
Control module DCS system spare parts DSTX150
Control module DCS system spare parts DSTX001
Control module DCS system spare parts DSTV110
Control module DCS system spare parts DSTS106 3BSE007287R1
Control module DCS system spare parts DSTS105 3BSE007286R1
Control module DCS system spare parts DSTS104 3BSE007285R1
Control module DCS system spare parts DSTK179
Control module DCS system spare parts DSTK176
Control module DCS system spare parts DSTK155
Control module DCS system spare parts DSTK152
Control module DCS system spare parts DSTK151V
Control module DCS system spare parts DSTK126
Control module DCS system spare parts DSTK114
Control module DCS system spare parts DSTD-W150
Control module DCS system spare parts DSTDN001
Control module DCS system spare parts DSTD310
Control module DCS system spare parts DSTD306
Control module DCS system spare parts DSTD160
Control module DCS system spare parts DSTD155
Control module DCS system spare parts DSTD150A
Control module DCS system spare parts DSTD150A
Control module DCS system spare parts DSTD150
Control module DCS system spare parts DSTD150
Control module DCS system spare parts DSTD120
Reviews
There are no reviews yet.