Core Viewpoint - China Petroleum & Chemical Corporation (Sinopec) has applied for a patent for a method of producing dimethyl ether from methanol, indicating a focus on innovative chemical processes to enhance production efficiency and reduce costs [1]. Company Overview - China Petroleum & Chemical Corporation was established in 2000 and is based in Beijing, primarily engaged in the petroleum, coal, and other fuel processing industries. The company has a registered capital of approximately 12.17 billion RMB [2]. - Sinopec Catalyst Co., Ltd. was founded in 2013 and is also located in Beijing, focusing on wholesale activities. The company has a registered capital of 1.5 billion RMB [2]. Patent Details - The patent application, published as CN120097813A, was filed on December 2023 and pertains to a reaction method for producing dimethyl ether from methanol. The method involves a reactor with a molecular sieve membrane tube that selectively separates water from methanol and dimethyl ether, enhancing methanol conversion rates and catalyst stability while reducing distillation costs for dimethyl ether [1].