Acid-gas-containing Claus sulfur recovery catalyst and preparation method thereof
A technology of catalyst and activated alumina, which is applied in chemical instruments and methods, sulfur preparation/purification, physical/chemical process catalysts, etc., and can solve the problems of high cost, reduced activity, and small operating flexibility
Inactive Publication Date: 2012-01-18
2 Cites 1 Cited by
AI-Extracted Technical Summary
Problems solved by technology
The invention relates to an acid-gas-containing Claus sulfur recovery catalyst and a preparation method thereof. The acid-gas-containing Claus sulfur recovery catalyst is characterized in that active aluminum oxide is used as carriers, ferric oxide is used as active ingredients, the ferric oxide content in the active aluminum oxide carriers is 4 to 5 percent, the alkaline earth metal content is 0.5 to 0.15 percent, and the catalyst is prepared by a twice-dipping method. The catalyst provided by the invention overcomes the defects that the existence form of iron of the traditional ferrous active aluminum oxide catalyst is indefinite or the distribution of Fe2O3 is not uniform, the impurity iron influence is caused in the preparation process, and the like. Simultaneously, the acid-gas-containing Claus sulfur recovery catalyst also has the characteristic of loading a small amount of alkaline earth metal so that the organic sulfur hydrolysis activity is overcome. In addition, compared with ordinary active aluminum oxide catalysts, the acid-gas-containing Claus sulfur recovery catalyst overcomes the defect of catalyst activity loss caused by sulfuric acid salinization poisoning because of the occurrence of trace oxygen and sulfur dioxide and overcomes the defects of small specific area, poor intensity and high performance cost of the pure titanium oxide catalysts. The HQHG-971 sulfur recovery catalyst provided by the invention can be used by full bed layers and can also be filled to a 1/3 position of the upper part of the ordinary aluminum oxide catalysts. The temperature use range is 180 DEG C to 400 DEG C, the hydrolysis rates of COS and CS2 respectively reach 99 percent and 70 percent, and the highest temperature resistance is 700 DEG C.
Sulfur preparation/purificationMetal/metal-oxides/metal-hydroxide catalysts
IonActivated alumina +15
- Experimental program(6)
Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.