Sulfur recovery refers to a gas desulfurizing process, or Claus process, which recovers elemental sulfur from gaseous hydrogen sulfide. The sulfur recovery catalyst recovers, in addition to the sulfur from the gaseous hydrogen sulfide found in raw natural gas, hydrogen sulfide that is contained in by-product gases and derived from refining crude oil and other industrial processes.
Our PSR series sulfur recovery catalyst, with alumina or titania acting as the carrier, is made by adding promoter and caking agent. The catalyst is used in the Claus units for sulfur recovery from acidic gases containing H2S and organic sulfides like COS and CS2, with the total sulfur conversion rate up to 95% or even higher. The sulfur recovery catalyst is commonly applied in the oil refinery, fertilizer, natural gas, petrochemical industries, and others.
Chempack has developed a series of SRU catalyst for sulfur recovery as follows.
Table 1 Chempack PSR Series Sulfur Recovery Catalyst
| PSR | Catalyst | Chemical Composition |
| PSR-1 | CR | Al2O3 |
| PSR-21 | CRS | TiO2/Al2O3 |
| PSR-31 | CRS-31 | TiO2 |
| PSR-41 | AM | FeSO4/ Al2O3 |
| PSR-51 | TG | Co-Mo/Al2O3 |
Table 2 Efficiency of CHEMPACK-PSR Series Sulfur Recovery Catalysts*
| Processing Type | Catalyst | Filling Reaction | Total Sulfur Conversion Rate (%) | Sulfide Content in Tail Gas (%, V) | Remark |
| Claus(Grade 2) | PSR-1 Al2O3 PSR-1 Al2O3 | First reactor Second reactor | 93.8 | 1.178 | Basic type |
| Claus(Grade 2) | PSR-41 FeSO4/Al2O3 PSR-1 Al2O3 PSR-41 FeSO4/Al2O3 PSR-1 Al2O3 | First reactor Second reactor | 95.5 | 0.979 | Economical type |
| Claus(Grade 2) | PSR-41 FeSO4/Al2O3 PSR-31 TiO2 PSR-41 FeSO4/Al2O3 PSR-31 TiO2 | First reactor Second reactor | 96.7 | 0.854 | Economical and environment-friendly type |
| Claus(Grade 2) | PSR-41 FeSO4/Al2O3 PSR-31 TiO2 PSR-41 FeSO4/Al2O3 PSR-31 TiO2 PSR-31 TiO2 | First reactor Second reactor Third reactor | 98 | 0.542 | Environment-friendly type |
| Claus+SCOT | PSR-41 FeSO4/Al2O3 PSR-1 Al2O3 PSR-41 FeSO4/Al2O3 PSR-1 Al2O3 PSR-51 Co-Mo/Al2O3 | First reactor Second reactor Third reactor | >99.8 | <300ppmv | Standard type |
Note: mark of * refers to the calculation based on H2S content of 60 percent(ν) in acid gas and maximum sulfur conversion rate, as well as by means of the analyzer and detector with H2S/SO2 on-line proportion analysis and control. For the device for high-temperature thermal admix and grade-2 catalytic conversion, the filling volume of PSR-41 catalyst accounts for 1/3~1/2 the bed volume. In case that H2S content in acid gas is less than 40%(ν), the filling volume of PSR-41 catalyst shall account for 1/2~2/3 the bed volume, and the filling volume of PSR-31 catalyst shall account for 1/3~1/2 the bed volume.
As an experienced Chinese sulfur recovery catalyst manufacturer and supplier, Chempack is ISO9001:2000 approved due to its management in line with international standards. Quality is high priority for us at Chempack. To accomplish this, we train high quality technical personnel for specialized R&D to ensure reliability of our chemical products. Our high quality competitively priced oxygen removal, carbon monoxide removal, adsorbent, and other products are now well received by customers from Britain, Germany, Iran, Jordan, Thailand, Philippines, South Korea, and many others. If you have any inquiries, please contact us. The staff at Chempack is ready and waiting to serve you.
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