Why is the safety valve of the acidic water stripping tower located above the liquid accumulation tank at the bottom of the tower?
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Why is the safety valve of the acidic water stripping tower installed above the liquid accumulation tank at the bottom of the tower?
The safety valve is installed on the gas outlet pipeline at the bottom of the acidic water stripping tower; the material discharged is mainly water vapor, with low levels of harmful components such as hydrogen sulfide and ammonia. Otherwise, if it is installed at the top of the tower, the discharged material will contain high levels of harmful components such as hydrogen sulfide and ammonia, and the discharge rate will be high, making subsequent treatment difficult and increasing the risks to safety and the environment.
Why isn’t the safety valve of the stripping tower connected to a flare, but instead vents directly to the atmosphere?
Just study the \"Design Code for Flammable Gas Emission Systems in Petrochemical Industries\" (SH 3009-2013) and you’ll understand.
It definitely has to go to the acidic gas flare...
The vent gas from safety valves, as well as the purge gas from the tower top system during normal shutdown, are generally discharged through dedicated pipelines to the acid gas flare.
I have a question: why are the safety valves of some regeneration towers connected via pipelines from the top of the tower? According to you, wouldn’t it be better to connect them from the middle of the tower?
Some safety valve designs include cross-line connections, front and rear drain lines, as well as purge nitrogen, while others do not