Method for removing carbon deposit from deactivated titanium silicalite molecular sieve catalyst

• Main Authors: LIU MENG, WEN YIQIANG, WANG XIANGYU, XUE YAN, LI GUANGHE, LIU YANGQING
• Format: Patent
• Language: Chinese; English
• Published: 23.03.2016
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; 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 relates to a method for removing carbon deposit from a deactivated titanium silicalite molecular sieve catalyst. The method includes the steps of: firstly soaking carbon deposit-containing deactivated titanium silicalite molecular sieve catalyst raw powder into a hydrogen peroxide solution, then performing irradiation under ultraviolet light, and under the combined action of ultraviolet light and hydrogen peroxide, conducting fast oxidative degradation on the carbon deposit for removal. The method used by the invention solves the serious problems of waste gas pollution, potential safety hazard, high energy consumption and the like in the existing process of removing carbon deposit by a roasting technology.