Membrane Recovery of Chlorinated Methane Plant Developed Successfully

The Chlorinated Methane Organic Vapor Membrane Recovery Unit developed by Dalian Institute of Chemical Physics, Chinese Academy of Sciences, was successfully launched on the 12,000 tons/year organosilicon production line of PetroChina Jilin Branch a few days ago. The results of the operation show that the process arrangement of the device is reasonable and the operation is safe and reliable. The various operating parameters have met the design requirements, and more than 90% of the original chlorinated methane has been recycled.

Membrane organic vapor separation technology is a low-energy separation technology that can meet the development requirements of high efficiency and pollution-free separation technology in the modern industry, especially in the petrochemical industry. In the 1990s, Dalian Institute of Chemicals undertook the “8th Five-Year Plan” major research project of the Chinese Academy of Sciences—separation technology of organic vapor membrane technology. It first developed organic vapor membranes and separators in China, and carried out industrialization in Ethylene Branch of Jilin Chemical Corporation. The experiment was successful and its technology reached the international advanced level. In 2002, the institute cooperated with Jilin Chemical Co., Ltd. to carry out the research on the separation and recovery process of methyl chloride membranes. The researchers solved a number of technical problems, such as process calculations and process design, and developed a number of technical problems on the basis of a large amount of data. A set of chlorine-methane membrane recovery equipment for organic silicon production has achieved good social and economic benefits.