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 M2004HW
Control module DCS system spare parts LXN1604-6
Control module DCS system spare parts LWN2660-6EG
Control module DCS system spare parts LWN2660-6E 3BHL000986P7002
Control module DCS system spare parts LWN2660-6E
Control module DCS system spare parts LWN2660-6
Control module DCS system spare parts LWN1902-6
Control module DCS system spare parts LTU-785
Control module DCS system spare parts LTC745A101 3BHE039905R0101
Control module DCS system spare parts LTC743CE22 3BHE013299R0022
Control module DCS system spare parts LTC743CE 3BHE013299R0001
Control module DCS system spare parts LTC743CE 3BHE013299R0001
Control module DCS system spare parts LTC391AE01 HIEE401782R0001
Control module DCS system spare parts LTC391AE01 HIEE401782R0001
Control module DCS system spare parts LTC391AE01 HIEE401782R0001
Control module DCS system spare parts LT8978BV1 HIEE320639R0001
Control module DCS system spare parts LT8978bV1
Control module DCS system spare parts LSP086388-001
Control module DCS system spare parts LPS01
Control module DCS system spare parts LMUSM02
Control module DCS system spare parts LM80
Control module DCS system spare parts LDSYN-101 3BHE005555R0101
Control module DCS system spare parts LDSYN-101
Control module DCS system spare parts LDSYN-101
Control module DCS system spare parts LDSTA-01
Control module DCS system spare parts LDSTA-01
Control module DCS system spare parts LDMUI-01
Control module DCS system spare parts LDMUI01
Control module DCS system spare parts LDMUI01
Control module DCS system spare parts LDMUI-001 61320946C
Control module DCS system spare parts LDMTR-01
Control module DCS system spare parts LDGRB-01 3BSE013177R1
Control module DCS system spare parts LDGRB-01 3BSE013177R1
Control module DCS system spare parts LDGRB-01 3AFE61320954P0001
Control module DCS system spare parts LDGRB-01 3AFE61320954P0001
Control module DCS system spare parts LDGRB-01
Control module DCS system spare parts LDGRB-01
Control module DCS system spare parts LD800HSEEX
Control module DCS system spare parts LD800HSE 3BDH000320R0101
Control module DCS system spare parts LD800HSE 3BDH000320R02
Control module DCS system spare parts LD800HSE
Control module DCS system spare parts LC1000-S/SP7
Control module DCS system spare parts LC1000-S/SP7
Control module DCS system spare parts L110-24-1
Control module DCS system spare parts L003748-AR 3BSX108237R300
Control module DCS system spare parts KX8974CV24 HIEE320606R1
Control module DCS system spare parts KUD181A01 3BHE013431R0001
Control module DCS system spare parts KUC755AE117 3BHB005243R0117
Control module DCS system spare parts KUC755AE117
Control module DCS system spare parts KUC755AE106 3BHB005243R0106
Control module DCS system spare parts KUC755AE106 3BHB005243R0106
Control module DCS system spare parts KUC755AE106
Control module DCS system spare parts KUC755AE105 3BHB005243R0105
Control module DCS system spare parts KUC720AE01 3BHB003431R0101
Control module DCS system spare parts KUC720AE01 3BHB003431R0001
Control module DCS system spare parts KUC720AE01
Control module DCS system spare parts KUC720AE
Control module DCS system spare parts KUC711AE101 3BHB004661R0101
Control module DCS system spare parts KUC711AE101 3BHB004661R0101
Control module DCS system spare parts KUC711AE101
Control module DCS system spare parts KUC711AE01 3BHB004661R0001
Control module DCS system spare parts KUC711AE01 3BHB004661R0001
Control module DCS system spare parts KUC711AE 3BHB004661R0101
Control module DCS system spare parts KUC711AE 3BHB004661R0001
Control module DCS system spare parts KUC711AE 3BHB004661R0001
Control module DCS system spare parts KUC711AE
Control module DCS system spare parts KUC321AE HIEE300698R1
Control module DCS system spare parts KUC321AE HIEE300698R0001
Control module DCS system spare parts KSD211B101 3BHE022455R1101
Reviews
There are no reviews yet.