CO sulfur tolerant shift catalyst and preparation method thereof

• Main Authors: CHENG YUCHUN, GAO BULIANG, DENG JIANLI, TIAN LI, TAN YONGFANG
• Format: Patent
• Language: Chinese; English
• Published: 21.04.2010
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS THEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a CO high/medium voltage sulfur tolerant shift catalyst comprising a catalyst active component, a structure promoter and a carrier. The CO high/medium voltage sulfur tolerant shift catalyst is characterized in that the structure promoter is directly derived from magnesite, and the magnesite is crushed and subjected to thermal inversion and phase inversion to form active magnesium oxide mineral powder so as to substitute active magnesium oxide or magnesium salts; the use level of the magnesite powder is 5-30 percent of the total quality of the catalyst; the technical key lies in the high dispersion and thermal phase inversion of the magnesite powder; meanwhile, the invention also provides a preparation method of the catalyst, which has simple operation process and comprises the following steps of mediating, extruding, drying and roasting. The catalyst is applied to a process flow of high/medium voltage shift and has very high activity, stability and strength. The sulfur tolerant shift ca