How to reduce the severe problem of liquid carryover in the inter-stage liquid separation tanks of coking compressors
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The inter-stage liquid separation tank always has liquid in it, and the pressure valve remains open at all times; the liquid level in the separator tank at the compressor inlet isn’t that high either. How can we reduce the amount of liquid present? In some plants, the liquid separation tanks between stages of the coking compressors basically contain no liquid. Are there any operational considerations to keep in mind?
The inlet separation tank is leak-free, but the interstage separation tank is leaking – could it be that the interstage cooler is leaking?
It’s also possible that, in the event of a leak, it’s the water from the cooling circulation system that has seeped in
Reduce the temperature of the medium at the inlet of the compressor
While ensuring the proper operation of the compressor and the overall system, it increases the inlet pressure of the compressor and reduces the temperature of the medium at its inlet. This can reduce the amount of liquid carried
Reduce the temperature entering the compressor by installing a wire mesh coalescer.
The liquid medium is water, C4 component? Water: Check the inter-stage cooler ； C4 component: It may be related to the significant changes in the components of the system’s rich gas entering the engine. The cooler outlet temperature can be appropriately increased.
By \"liquid,\" you probably mean condensed oil. Treatment steps: 1. Keep the temperature of the rich gas fed to the vacuum compressor at a sufficiently low level through distillation； 2. Check whether there is a problem with the foam breaker in the overhead oil-gas separator of the distillation tower, or confirm whether it is installed ； 3. Keep the liquid level control in the overhead oil-gas separator of the fractionation tower at a lower level; do not maintain a too high liquid level.
Then we need to try lowering the inlet temperature; it’s mainly because the liquid in the gas phase liquefies after compression. There’s no other solution – we just need to improve the liquid separation process.
The pressure of the general cooling water is 0.4 MPA, while the pressure at the intermediate stages is roughly 0.8 MPA. Where do you think it’s leaking from? If the device in question keeps having such problems, it’s necessary to conduct a thorough inspection of the manufacturing process and the equipment used. The people who commented above have already provided some ideas; one can follow these suggestions to identify the source of the problems one by one!
Based on the issues identified above, as well as seasonal factors, temperature is very important