PSR sulfur recovery catalyst is mainly used for klaus sulfur recovery unit, furnace gas purification system, urban gas purification system, synthetic ammonia plant, barium strontium salt industry, and sulfur recovery unit in methanol plant. Under the action of catalyst, Klaus reaction is conducted to produce industrial sulfur.
The sulfur recovery catalyst can be used in any lower reactor. According to the operating conditions, the maximum conversion rate of H2S can reach 96.5%, the hydrolysis rate of COS and CS2 can reach 99% and 70% respectively, the temperature range is 180℃ -400℃, and the maximum temperature resistance is 600℃. The basic reaction of H2S with SO2 to generate element sulfur (S) and H2O:
2H2S+3O2=2SO2+2H2O 2H2S+ SO2=3/XSX+2H2O
It is an inevitable trend for a large sulfur recovery device to use the Claus + reduction-absorption process (represented by the SCOT process). The main principle of SCOT sulfur recovery process is to use reducing gas (such as hydrogen), reduce all non-H2S sulfur compounds such as S02, COS, CSS in the tail gas of the sulfur recovery device to H2S, then absorb and desorb H2S through MDEA solution, and finally return to the acid gas combustion furnace of the sulfur recovery device to further recover sulfur. The exhaust gas from the top of the absorption tower contains only trace sulfide, which is discharged into the atmosphere through the incinerator at high temperature.
Post time: May-06-2023
