Coking desulfurization equipment

What process do you use for desulfurization and decyanidation?

The filter press works well; it depends on your desulfurization process

The sulfur foam treatment isn’t working well; we plan to make modifications. Centrifuges and filter presses offer stable performance and good treatment results. Looking forward to experts who are well-versed in this area and have practical experience providing guidance! ! !

http://bbs.hcbbs.com/thread-107393-1-1.html A forum post for reference

Wow, here we use the tannin process in a fertilizer factory; eventually, the sulfur foam is directed to piles of sacks where it is filtered to produce sulfur paste.

Do you mean the final sulfur ointment? Do you still mean the desulfurization tower?

The filter press has a large processing capacity, but the quality of the sulfur paste is poor； The sulfur melting furnace has a relatively low processing capacity, but the quality of the sulfur produced is high.

Filter presses are not as good as continuous sulfur melting tanks; among continuous sulfur melting tanks, fractional sulfur melting tanks are the best

I currently have two feasibility studies for coking projects; I’m not sure about their outcomes. I’ve extracted two excerpts for everyone’s reference. I. Low-temperature carbonization (semi-coke): The raw gas from the cold drum section enters a gas holder for buffering; after being pressurized by a Roots blower, it enters the lower part of the desulfurization tower where it comes into countercurrent contact with the desulfurization liquid sprayed from the top of the tower. As a result, the H2S content in the gas is reduced to about 0.02 g/Nm3. After the mist droplets are removed in the mist capture section, the gas is sent entirely to the ammonium sulfate production section. The desulfurization solution, which has absorbed H2S and HCN from the desulfurization tower, is sent to the solution circulation tank. It is then pumped by a solution circulation pump to the lower part of the regeneration tower, where it is regenerated in parallel with the compressed air coming from the air compressor station. The regenerated desulfurization solution is returned to the top of the desulfurization tower for cyclic spraying to carry out desulfurization. Sulfur foam is discharged from the expanded section at the top of the regeneration tower into the sulfur foam tank, where it is then pressurized by a sulfur foam pump and sent to the sulfur melting vessel for continuous sulfur melting, in order to produce sulfur paste for sale. II. High-temperature dry distillation (coke): The gas sent from the desulfurization unit passes through a gas preheater before entering the spray chamber in the upper section of the spray-type ammonium sulfate saturator. There, the gas comes into full contact with the circulating mother liquor, allowing the ammonia contained in it to be absorbed by the liquor. After the acid mist is removed by the acid remover in the saturator, the gas is sent to the benzene elution section. Ammonium sulfate crystals are continuously formed in the mother liquor within the ammonium sulfate saturator; they are pumped, along with a portion of the mother liquor, to a crystallization tank for separation. Thereafter, they are separated using a centrifuge and transported by a screw conveyor to a vibrating fluidized bed dryer for drying. Once dried, they are stored in ammonium sulfate storage bins, weighed, packaged, and then ready for sale. The mother liquor located in the upper part of the crystallization chamber at the lower section of the saturator is continuously pumped by a mother liquor circulation pump to the upper spray chamber, where it is used to absorb ammonia from the gas; meanwhile, the mother liquor is circulated and stirred to improve the crystallization process of ammonium sulfate. The mother liquor that overflows from the spray chamber enters the full-flow tank, where a small amount of acid tar is separated. The mother liquor after this separation goes into the mother liquor storage tank; it is then pressurized by a small mother liquor pump and sent back to the spray chamber for spraying. The concentrated sulfuric acid supplied from the tank area flows by gravity from the sulfuric acid surge tank to the full-flow tank and is then added to the system. The hot air required for the vibrating fluidized bed is drawn from the atmosphere by an air blower and then supplied after being heated by steam in a hot air generator. The exhaust gas discharged from the vibrating fluidized bed is passed through a cyclone dust collector to capture any fine ammonium sulfate crystals carried in it; thereafter, it is pumped by an exhaust fan to a water bath dust collector for further wet dust removal, before being released into the atmosphere.

There are also many causes of sulfur foam, and catalysts are one of them; the differences can be significant. What kind of catalyst do you use?