Method for continuously producing dimethyl sulfoxide

• Main Authors: CHEN WEIJUN, HE CHIJIAN, WEN BIN, LIU CHEN, BAO JIANGUO, WU XIAOJU, WANG BO
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention discloses a method for continuously producing dimethyl sulfoxide, which comprises the following steps of: by taking dimethyl sulfide as a raw material and hydrogen peroxide as an oxidizing agent, firstly introducing the two materials into a membrane mixer to be fully contacted and mixed in a solvent-free and catalyst-free environment, and then feeding into a continuous flow microreactor to produce the dimethyl sulfoxide. The method effectively improves the mass transfer efficiency and the heat transfer efficiency in the reaction process, improves the conversion rate of the raw materials, is mild in reaction condition, short in reaction time, safe and stable in reaction process and capable of realizing continuous operation, and is particularly suitable for occasions for large-scale production. 本发明公开了一种连续生产二甲基亚砜的方法，该方法以二甲基硫醚为原料，过氧化氢为氧化剂，在无溶剂、无催化剂的环境下，将两种物料先通入膜混合器使其充分接触混合，再送入连续流微反应器中生产二甲基亚砜。本方法有效提高了反应过程中的传质和传热效率，提高了原料的转化率，反应条件温和，反应时间短，反应过程安全稳定，可连续化操作，特别适用于进行大规模生产的场合。