Is the methanol sulfur content too high?
Thread Content
Currently, the unit is operating at 80% load, and the sulfur content in the lean methanol remains high, fluctuating between 15 and 20. I’m asking fellow travelers to help analyze the reason. The pressure in the regeneration tower is 0.2 MPa.
15-20mg/l?
Are the desorption tower and thermal regeneration tower operating properly? Check the ammonia content at the inlet
PPM? Should sulfur content in methanol be analyzed manually, or should sulfur content in gases be analyzed online?
Yes, it’s usually 17 or 18; it just doesn’t go down.
An ammonia content of 1 less is normal.
Yes, around 20 PPM, the result of manual analysis.
I still don’t understand. Are you referring to the sulfur content in lean methanol?
Sorry for the late reply. Yes, sulfur in lean methanol. Today it has reached 25mg/l
The sulfur content in our low-methanol stream has always been between 70–80 mg/L, but the sulfur content in the purified gas has never exceeded this level.
We usually use 3 to 5 mg/L. I’ve never seen it this high – will it affect the product quality?