How to handle the non-condensable gas at the top of an atmospheric pressure tower
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How to handle the non-condensable gas at the top of an atmospheric pressure tower? It used to be released directly into the atmosphere, but now, due to requirements for energy conservation and emission reduction, it needs to be treated. 100 KG per hour. I earnestly ask those who are more experienced to tell me how to deal with this. Explain the purpose and process.
It’s difficult to discharge; let’s recycle it to the previous gas holder, pressurize it, and then burn it in the heating furnace.
Can it be directly integrated into the heating furnace pipeline? Should it still be burned as a blend?
You are a atmospheric pressure tower; it’s not safe to connect it directly to the heater pipeline – it’s very dangerous!
Add a water seal and a flame arrester. If it enters the bottom of the heating furnace to be burned as fuel, is it used as the main fuel or as a component mixed with exhaust gases?
The non-condensable gas at the top of the atmospheric pressure tower is mainly composed of methane, which can be sent to the heating furnace system for combustion. Pipelines can be installed at the vent opening above the reflux tank at the top of the tower or at the safety valve of the reflux tank; these pipelines usually pass through a methane separation tank and then lead to the burner of the heating furnace. To prevent some components from condensing during transport in the pipelines, steam tracing can be used along the pipes, and flame arresters can also be installed in them (for reference only)
Is additional heat tracing needed? What you mean by leading it to the burner should be for burning exhaust gases; I was thinking of using it as the main heat source for heating.
If it’s still necessary for the refineries in the north to add heat tracing, liquid accumulation in the gas lines during winter will be a serious problem. Since it is used as the main fuel, the key is to see whether the process requirements can be met, I think
The non-condensable gas is sent to the water-sealed tank for gas-liquid separation; some light oil may be carried along, so oil skimming is necessary. The water-sealed tank is equipped with a level gauge and a liquid level indicator. The gaseous phase is fed into the heater as fuel, while the liquid phase returns to the reflux tank
The previous light hydrocarbon gas compressor was connected to the inlet of the catalytic pressure compressor, which significantly increased the yield
Boss, can it really be called energy-saving if you use a compressor? Just for 100 kg/h of gas? This is a good solution – simply replace the natural gas burner in the furnace with a propane burner, and that’s it