固定床生产低碳烯烃的方法

• Format: Patent
• Language: Chinese
• Published: 11.06.2019
• 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

本发明涉及一种固定床生产低碳烯烃的方法，主要解决现有技术中存在的固定床合成气制低碳烯烃反应中CO转化率低和低碳烯烃选择性低的问题。本发明采用的催化剂以重量百分比计包括以下组分：a)10～50％的铁元素或其氧化物；b)1～5％的铑元素或其氧化物；c)9～30％的选自铜和锌中的至少一种元素或其氧化物；d)9～30％的选自钾和铯中的至少一种元素或其氧化物；e)1～5％的镨元素或其氧化物；f)30～70％的载体，以载体重量份数计，包括以下组分(1)20～70份氧化钛；(2)30～80份二氧化硅的技术方案，较好地解决了该问题，可用于固定床合成气生产低碳烯烃的工业生产。 The invention relates to a method for producing low-carbon olefins by using a fixed bed. The method mainly solves the problems of a low conversion rate of CO and low selectivity of the low-carbon olefins in the reaction process of producing the low-carbon olefins from synthesis gas by using the fixed bed in the prior art. According to the technical scheme, a catalyst adopted by the method comprises the following components, by weight percentage, a) 10-50% of Fe or an oxide thereof, b) 1-5% of Rh or an oxide thereof, c) 9-30% of at least one element selected from Cu and Zn or at least one oxide thereof, d) 9-30% of at least one element selected from K and Cs or at least one oxide thereof, e) 1-5% of Pr or an oxide thereof, and f) 30