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 YTE102C
Excitation system ABB module YTE102B
Excitation system ABB module YTE102A
Excitation system ABB module YT296000-RX
Excitation system ABB module YT296000-MZ
Excitation system ABB module YT296000-MC
Excitation system ABB module YT221001-LS
Excitation system ABB module YT213001-BC
Excitation system ABB module YT213001-AB
Excitation system ABB module YT213001-AA
Excitation system ABB module YT212002/AD
Excitation system ABB module YT204001-KE
Excitation system ABB module YT204001-KB
Excitation system ABB module YT204001-JK
Excitation system ABB module YT204001-JB/1
Excitation system ABB module YT204001-HS
Excitation system ABB module YT204001-FV
Excitation system ABB module YT204001-FR
Excitation system ABB module YT204001-FL
Excitation system ABB module YT204001-FD
Excitation system ABB module YT204001-FC1
Excitation system ABB module YT204001-FB
Excitation system ABB module YT204001-FB
Excitation system ABB module YT204001-EG
Excitation system ABB module YT204001-DT
Excitation system ABB module YT204001-CV
Excitation system ABB module YT204001-CN/4
Excitation system ABB module YT204001-BL
Excitation system ABB module YT204001-AL
Excitation system ABB module YT204001-AF
Excitation system ABB module YT204001-AF
Excitation system ABB module YPQ112A
Excitation system ABB module YPQ112A
Excitation system ABB module YPQ111A
Excitation system ABB module YPQ111A
Excitation system ABB module YPQ110A 3ASD573001A5
Excitation system ABB module YPQ110A 3ASD573001A5
Excitation system ABB module YPQ109B 3ASD510001C20
Excitation system ABB module YPQ108A
Excitation system ABB module YPQ104A
Excitation system ABB module YPQ104A
Excitation system ABB module YPQ-101E
Excitation system ABB module YPQ101E
Excitation system ABB module YPP110A 3ASD573001A1
Excitation system ABB module YPP110A 3ASD573001A1
Excitation system ABB module YPP109A
Excitation system ABB module YPP109A
Excitation system ABB module YPP105B
Excitation system ABB module YPP105B
Excitation system ABB module YPK117A 61163280
Excitation system ABB module YPK117A
Excitation system ABB module YPK117A
Excitation system ABB module YPK113A
Excitation system ABB module YPK113A
Excitation system ABB module YPK112A
Excitation system ABB module YPK112A
Excitation system ABB module YPK110A
Excitation system ABB module YPK107E
Excitation system ABB module YPI103E
Excitation system ABB module YPI103E
Excitation system ABB module YPH108B/SPC
Excitation system ABB module YPH108B/SPC
Excitation system ABB module YPH107A
Excitation system ABB module YPH107A
Excitation system ABB module YPG108E
Excitation system ABB module YPC104B YT204001-BT
Excitation system ABB module YPC104B
Excitation system ABB module YPC104B
Excitation system ABB module YM322001-EG
Excitation system ABB module YM322001-EG
Excitation system ABB module YM318001-CN
Excitation system ABB module YM318001-CN
Excitation system ABB module YM110001-SN
Excitation system ABB module YM110001-SN
Excitation system ABB module YL621001-BB
Excitation system ABB module YL621001-BB
Excitation system ABB module YB560103-BR
Excitation system ABB module YB560103-BR
Excitation system ABB module YB560103-BN
Excitation system ABB module YB560103-AP
Excitation system ABB module YB560100-EAS3
Excitation system ABB module YB560100-EA
Excitation system ABB module YB560100-EA
Excitation system ABB module XVC772A102 3BHE032285R0102
Excitation system ABB module XVC770BE102 3BHE021083R0102
Reviews
There are no reviews yet.