Catalytic hydrogenation method for decreasing index of linear alkylbenzene bromide

• Main Authors: REN JIE, YUAN HAIKUAN, JIN HUI, SHEN LIAN
• Format: Patent
• Language: Chinese; English
• Published: 25.05.2016
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; 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; 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 discloses a catalytic hydrogenation method for decreasing the index of linear alkylbenzene bromide. The method includes the steps of mixing hydrogenation raw material with hydrogen and making the mixture make contact with and react with a transition metal phosphide loaded type catalyst at a temperature of 60-400 DEG C, pressure of 0.3-10.0 MPa, quality airspeed of 0.2-8.0 h<-1> and hydrogen-to-oil volume ratio of 300:1 to 8000:1 so that olefin saturation can be achieved, the index of linear alkylbenzene bromide can be decreased and product quality can be improved, wherein the hydrogenation raw material is linear alkylbenzene obtained by conducting distillation separation on a benzene and C10-C14 linear olefin alkylation mixture or is the benzene and C10-C14 linear olefin alkylation mixture. The method is simple in technological process, the catalyst is high in activity stability, the device is long in stable operation time, a reactor can be prevented from frequent reaction and regeneration switc