Where are the non-condensable gases discharged by the vacuum pumping system of the vacuum distillation tower sent?
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Where are the non-condensable gases discharged by the vacuum system of your pressure relief tower sent? The exhaust fumes smell terrible.
What is the pressure in your low-pressure gas pipeline network? Do fluctuations affect the emissions of the vacuum system?
It is sent to the low-pressure gas system and then to a heating furnace for combustion; when the heating furnace is not in use, it goes to the flare system, where it is recovered in the gas recovery tank. What cannot be recovered is sent to the flare for burning – it is not released directly into the atmosphere, as that would cause severe pollution, and the environmental protection agency certainly would not approve such a practice
After desulfurization, it is fed into a heater as fuel gas
Discharging air at 100% is not feasible now. Burning untreated gas in the heating furnace causes severe corrosion of the furnace tubes and preheaters; it is also possible to desulfurize the gas by sending it to the low-pressure gas collection tank, or to compress it first to increase its pressure before desulfurizing it and then feeding it into the fuel pipeline network.
Each plant has different configurations; in our plant, after the gas compressor, the light hydrocarbons are separated into dry gas and liquefied gas
It is usually a low-pressure gas system, or oil and gas recovery system