Treatment of unqualified liquid hydrocarbons containing sulfur and water-soluble acids and bases
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I would like to ask if the liquid hydrocarbon entering the spherical tank is found to contain sulfur and water-soluble acid and alkali that are unqualified except for refining. Is there any other better way to deal with it?
First you need to check the upstream process. Generally speaking, sulfur content is due to problems with the operation of desulfurization (alcohol) units. Does the outlet sulfur content of these units meet the standards? Water-soluble acids and bases are generally not used as control indicators for liquid hydrocarbons. If alkali is used, it needs to be analyzed whether the processing capacity of liquid hydrocarbons fluctuates greatly? No change in lye circulation volume? Then there is the inspection of the operation of the washing process.
Friends upstairs may have misunderstood. Maybe I didn’t express myself clearly. Asking how to deal with the problem of excessive sulfur content and unqualified water-soluble acid and alkali after entering the spherical tank belongs to the storage and transportation part: loveliness:
As long as the equipment is installed, if the sulfur content exceeds the standard, fixed bed and other methods can be used according to the degree of the exceedance. As for water and alkali exceeding the standard, water washing can be used. But the key to the problem is that spherical tanks belong to storage and transportation. This problem should not be solved. Solving it from the source is the key to the problem.
If the water-soluble acid and alkali in my storage and transportation plant fails to meet the standards, the acid and alkali deposited at the bottom will be released after a period of rest.
After the liquid hydrocarbons come out of the stabilizing tower of the catalytic cracking unit, they first use diethanolamine to remove H2S inorganic sulfur, and then use alkaline elution to remove mercaptans. Therefore, if the sulfur content is not up to standard in the tank area, it will not be returned to the mercaptan removal unit. We have to rely on our tank area to deal with it. There is nothing we can do. Water-soluble acids and bases can be processed by sedimentation and dehydration.