Destination of the dry gas from the reforming stabilizer
Thread Content
This device causes severe clogging of the burners due to the dry gas from the stabilizer top being sent to the fuel gas line; it is presumed that this is because of the chlorine content in the dry gas. I was wondering if anyone has any good solutions? Is there also a better route for this gas to go?
After reprocessing the dry gas from the stabilizer tower, it is sent to the fuel gas pipeline network via the dechlorination tank； If it is not sent to the dechlorination tank, the only option from the back route is to burn it in a flare.
This post was last edited by Refiner on 2017-1-15 at 13:21. Currently, the flares at the plant cannot be used (except in case of an accident); burning off the gas through flares is not an option. If a dechlorination tank is to be used, I’m not sure what the effectiveness of low-temperature vapor dechlorination would be. Are there any better suggestions? Thank you
Can it be determined now that the nozzle blockage was caused by chlorine in the dry gas? When dry gas is used as fuel gas, dechlorination tanks are rarely needed
The dry gas from the stabilizer tower of our plant’s continuous reforming unit is sent to the fuel gas network after passing through the dechlorination tank; over the two years since the unit was put into operation, the dechlorination effect has been good
After the dry gas was removed, the clogging of the burner was alleviated; apart from chlorine, there should be no other impurities in this gas
Could you please provide the model of the dechlorinating agent? Thank you very much
So after it’s modified, will the dry gas still be used as fuel?
No, it was changed to a fuel gas desulfurization unit, but their reciprocating compressors suffer from severe salt buildup, which is quite troublesome
It should be sent to the sulfur recovery unit; our design provides two routes: for sulfur recovery and for fuel gas
Ammonium salts in the dry gas at the top of the stabilizer can travel along the pipelines to the fuel gas lines, causing blockages in the flame arresters and nozzles. It is necessary to inject water regularly before cooling the stabilizer for flushing purposes; in my case, this is done on a monthly basis, with about 30 tons of water being injected each time. The pH of the water resulting from the flushing process is monitored, and it usually returns to normal after two or three hours of flushing. The dry gas can also be sent to the inlet of the booster pump