Discussion on the issue of low-methane off-gas
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As the title suggests, is it necessary to use a stainless steel storage tank for the methanol tank used in handling materials with low iodine content? What are the reasons?
Generally, the system shuts down for an extended period of time; methanol must be regenerated to meet the required standards before the shutdown can take place. There is no need to install stainless steel storage tanks even if methanol needs to be returned.
Have any considerations for emergencies been taken into account?
What situations do you consider emergency situations? If a certain tower needs maintenance or inspection, the liquid can be transferred to another tower; there is no need to drain the liquid from the entire system, which makes things very simple.
The moderator is right; for the low-temperature methanol washing units that require maintenance or inspection, methanol can be fed into the gas towers, allowing for flexible use.
So when is it necessary to remove methanol? A complete overhaul?
Yes, only during major maintenance is it necessary to service or inspect the towers or pipelines in the system; in such cases, all the methanol must be removed, and it needs to be regenerated before being taken out. For local maintenance or inspection, it is not necessary to remove all the methanol.
We have two storage tanks here; one is smaller and used for low-temperature storage, and its contents can be used in emergency situations. During long-term shutdowns for maintenance, the methanol is allowed to warm up before its contents are removed.
What is the craftsmanship technique of that company? Are low-temperature storage tanks in use?
From Dalian University of Technology; it’s rarely used.
It’s the same as with the methanol tank; even when returning the material, it’s poor-quality methanol that is returned! Who’s bold enough to retreat and use rich methanol