Request for an analysis of the reasons for the high ammonia content in the treated hydrogenated sulfur-containing dry gas
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Our facility is a hydrogenation unit; the sulfur-containing dry gas produced contains high levels of ammonia after desulfurization – up to 1000, with levels usually around 400. This leads to salt buildup and blockages in the burner nozzles. Is there any way to remove the ammonia completely?
The concentration is too low, so the washing effect is not noticeable. Go with the molecular sieve
Increase the water injection volume; otherwise, over time, precipitation will occur in the high-pressure air cooler, causing blockages in the air cooling fins
Water is being injected continuously, and in large quantities; the ammonia content in the recycled hydrogen is around 300, but it’s higher in the sulfur-containing dry gas that follows
Do you mean that the ammonia concentration is too low? Which type of molecular sieve should be used, and should it be placed in the high-pressure or low-pressure section? What is the operating cycle duration? Are there any requirements regarding the components of the sulfur-containing dry gas?
It is actually a dehydrated molecular sieve, of the A4 type; it is very durable and can be regenerated and used for adsorption with a pressure difference of 100 kilograms, with no problems even after two years