种以精制焦化甲苯为原料制备苯甲酸的催化体系及装置

• Format: Patent
• Language: Chinese
• Published: 19.04.2017
• 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

本发明公开了种以精制焦化甲苯为原料制备苯甲酸的催化体系及装置。催化体系由环烷酸钴和粉状活性炭负载过渡金属或过渡金属氧化物等组成；为适应该催化体系，反应装置为在现有气液鼓泡反应器的基础上增加活性炭负载型催化剂固体粉末的循环利用装置。本发明可以不改变原有苯甲酸工业化主流程，在不增加主催化剂环烷酸钴单耗的前提下，直接采用精制焦化甲苯为原料生产苯甲酸，降低了产品生产成本，且具有工艺流程简单，操作方便的特点。 The invention discloses a catalytic system and a device for preparing benzoic acid by adopting refined coked methylbenzene as a raw material. The catalytic system consists of cobalt naphthenate and powder active-carbon-carrier transitional metal or transitional metal oxide; in order to adapt to the catalytic system, a reaction device is additionally provided with an active-carbon-carrier catalyst solid powder recycling device on the basis of the existing air-liquid bubbling reactor. By adopting the catalytic system and the device, the traditional benzoic acid industrialization main flow is not changed, and on the premise of not increasing the single consumption of the main catalyst cobalt naphthenate, the refined coked methylbenzene is directly used as the raw material to produce the benzoic acid, thus the prod