Gas-liquid separator
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Hello, I’m a newcomer who has just started working at a coking plant. I noticed that there is no gas-liquid separator installed in front of the gas fans in our plant. I would like to ask those with more experience – is it okay not to use a gas-liquid separator? Is there no liquid in the gas? If there is liquid present along with condensate, why isn’t a gas-liquid separator used? Moreover, there is hydrogen sulfide, which is highly corrosive in the presence of water
It’s not in front of the blower, but rather in front of the primary cooler. Generally speaking, you can check there; if there is no gas-liquid separator, then tar and gas cannot be separated from each other. The tar will then clog the pipes, and it may also enter the blower. The function of a gas-liquid separator is to separate gas from tar. In front of the blower, our factory also has mist collectors, which help to capture some of the tar droplets present in the gas
Thank you; the fog catcher you mentioned is what I refer to as a gas-liquid separator.
Our factory is currently under expansion, and the desulfurization unit is designed to use a regeneration tower. However, I’ve heard from some people that a regeneration tank would be better. After estimating the costs and comparing the performance of both options, I’m not sure which one to choose. I would like to ask experienced colleagues: which process is better? What are the advantages and disadvantages of each when compared?
The regeneration tank is not very clear, but in recent years, many desulfurization projects have adopted HPF desulfurization, which means using a regeneration tower
Oh, in many modern designs, the mechanical tar collectors are no longer used; as long as the electric capture system is well-functioning, there’s no major problem
There are many desulfurization methods: AS HPF, vacuum carbonates, and many others
Currently, gas-liquid separation before primary cooling is generally achieved by using a high pressure difference in pipes instead of a gas-liquid separator.
The working principle of gas-liquid separation before initial cooling is based on the use of a height difference. In simple terms, when the mixture of raw gas and tar-ammonia water enters the gas-liquid separator, the liquid with a higher density flows out from the bottom of the separator, while the gas with a lower density emerges from the top, thereby achieving gas-liquid separation. The current gas-liquid separators are similar to those of the past in that only their shape has changed; they now look like pipes.
The process design of your factory is not standardized. You should start by learning the basic theories first. . Understanding the basic process flow to get started in this field will be helpful for your future work.