Is it possible for sulfur recovery for acid production to replace the Claus process for sulfur production?
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After looking into it, it seems that the advantages of producing sulfuric acid are much greater. Does the process of producing sulfur via the Claus method still have a promising future? O(∩_∩)O Thank you
These are two different processing approaches; at present, the Claus process remains the most reasonable method for treating sulfur-containing gases in refineries
It’s good at producing acid, provided that the acid can be consumed or sold
The key issue with WSA is the problem of finding buyers. My friend’s company operates using WSA, and as a result it cannot sell sulfuric acid; moreover, in order to maintain the temperature of the combustion furnace, it is forced to use fuel gas, resulting in a loss of 30 yuan for every ton of sulfuric acid produced.
That’s pretty bad too; sulfuric acid isn’t as easy to store as sulfur
When promoting its WSA technology, Topso claims that it does not require the use of fuel gas and is more profitable than the Claus sulfur recovery technology; in reality, this claim is not backed by facts. Both WSA and Claus sulfur recovery are loss-making, but since they are environmental protection devices, there’s nothing that can be done about it.
This isn’t an absolute rule either; it’s quite normal for things to change over the course of thirty years There are indeed many cases of rushing into projects and engaging in fierce competition!
In the WSA wet acid production process, as long as the H2S concentration in the process gas is above 25%, there is no need to burn fuel gas. It is estimated that the situation described above occurs when the WSA unit is operating under low conditions, and the H2S concentration does not reach 25%. As long as there is a market for sulfuric acid produced in the region, using WSA is definitely better than using the Claus process to produce sulfur.
The main issue is market demand. In terms of the current coal chemical industry, acid production is the right choice, but storage and export pose constraints! It’s confusing, especially as stricter regulations on exhaust emissions have increased the environmental pressure associated with coal utilization.