May I ask whether the ignition system of the heating furnace and the control of the chimney dampers are adjusted on-site or via DCS?
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May I ask, for the ignition systems of the heating furnaces in operation, is the control of the chimney dampers done on-site or via DCS?
Ignition? Three-gas boiler, coal-fired boiler?
I noticed that the poster is particularly concerned about the issue of starting up the heating furnace. Are you working in the synthesis section? It’s not necessary to use a DCS for ignition control and chimney dampers; on-site control is sufficient. Here, it’s enough to have only one set of interlocks for fuel gas flow rate, to prevent flameout when the flow rate is too high and to stop the fire when the flow rate is too low
On-site PLC control is sufficient.
Not bad, not bad. Agree with what was said on the third floor
On-site control, + fuel gas interlock
Controlled by PLC; generally, two interlocks are the most important – one is the interlock for low inlet flow, and the other is the interlock for high outlet temperature!
You can visit the post linked below to learn about the operating procedures for starting up the heating furnace: http://bbs.hcbbs.com/thread-392664-1-1.html
On-site control: we have several interlocks here – low syngas flow leads to flame extinction, high syngas temperature, and low fuel gas pressure.