Technical exchange on catalytic dry gas technology
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The hydrogen sulfide level in the catalytic dry gas is not up to standard; seeking advice.
What is the concentration of the amine solution, and what is the hydrogen sulfide level in the lean amine solution? How is the regeneration effect? It’s hard to say
The main factor is the concentration of the amine solution (we keep it at 30-35%), and the circulation rate of this amine solution needs to be properly controlled
What is your target control level? Here, it’s usually normal to be <1
The key lies in the quality of the depleted liquid after regeneration, the absorption temperature, and the solvent circulation rate~~~
Ours is 25% concentration; actually, as long as the product meets the standards, it doesn’t matter what
The hydrogen sulfide content in the catalytic dry gas produced by our company is less than 20 ppm, with an ethanolamine concentration of around 25%. The hydrogen sulfide level in the lean stream ranges from 3% to 5%. The plant has been in operation for 9 months, and yet problems related to unsatisfactory hydrogen sulfide levels have still occurred
There are many reasons why the dry gas is not up to standard; it is related to the circulation volume of the lean liquid, its concentration, the hydrogen sulfide content in it, as well as the content of molten salts. It is not sufficient to consider only the concentration – the quality of the lean liquid must also be taken into account.
Concentration of lean liquid? Lean liquid circulation rate? Dry gas flow rate?
Do you mean the hydrogen sulfide content in the lean liquid? Here, the allowed limit is no more than 2 g/l, but this value often exceeds that limit
Our total sulfur level also tends to be a bit higher from time to time