一种制备异丙醇的方法

• Format: Patent
• Language: Chinese
• Published: 06.08.2019
• 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

本发明公开了一种制备异丙醇的方法，包括如下内容：以醋酸和丙烯为反应原料，在装填有离子交换树脂催化剂的固定床连续反应装置进行加成反应，反应后的物料和水进入催化精馏塔再沸器，共沸蒸汽上升至装有改性离子交换树脂催化剂的催化精馏塔反应段进行水解反应，反应过程中向反应段顶部加入少量水，水解产物由塔顶馏出，经提纯后得到异丙醇产品。本发明方法反应流程简单，条件温和且催化剂活性稳定并能够长周期运转。 The invention discloses a method for preparing isopropanol. The method comprises the following contents: acetic acid and propylene serve as reaction raw materials, an addition reaction is carried out in a stationary bed continuous reaction device filled with an ion exchange resin catalyst, the materials and water after the reaction enter a reboiler of a catalytic distillation column, azeotropic steam goes up to a reaction zone of the catalytic distillation column filled with a modified ion exchange resin catalyst for hydrolysis reaction, a small amount of water is added into the top of the reaction zone in the reaction process, and hydrolysate is distilled off from the top of the column and is purified, so as to obtain an isopropanol product. The method disclosed by the invention is simple in reaction process and mild