In what areas can low-temperature methanol washing be applied? Which large domestic manufacturers use low-temperature methanol-based technology?

Used for the purification of raw gas in ammonia synthesis, gas purification, methanol, dimethyl ether, etc. Many manufacturers use low-temperature methanol washing, such as Shandong Tokushima Hualu Hengsheng

In the production of synthetic ammonia, methanol, etc., using coal-based, oil-based, or gas-based feedstocks, low-temperature methanol washing can be employed to remove acidic gases such as CO2 and H2S. Many manufacturers in China use low-temperature methanol washing; Hubei Shuanghuan Technology Co., Ltd. employs this technology in its 200,000-ton oil-to-coal conversion project ； Yunnan Tianan Chemical Co., Ltd. – 500,000 tons per year of synthetic ammonia low-temperature methanol washing ； Low-temperature methanol washing for the 600,000-ton methanol production project at Guohong Chemical Co., Ltd., Shandong Yanzhou Coal Industry Group ； Yulin Chemical Co., Ltd. of Shandong Yanzhou Coal Industry Group: 2.3 million tons per year of low-temperature methanol washing for methanol production ； Low-temperature methanol washing for the 400,000-ton dimethyl ether project at SNOW Energy Co., Ltd., SNOW Group ； Acid gas removal process for the 600,000 tons/year acetic acid synthesis renovation project of Jiangsu Suopu Group Co., Ltd ； Low-temperature methanol washing for the 500,000-ton synthetic ammonia project at Guizhou Kaiyang Chemical Co., Ltd ； There are projects such as the 300,000-ton synthetic ammonia plant and the 200,000-ton methanol project of the Weihe Coal Chemical Industry Group, among many others that you can keep an eye out for.

It is mainly used for gas purification, and Dalian University of Technology has relatively mature technology in this area.

It is mainly used in water gas purification, and the technology of Dalian University of Technology is not very good.

Water gas purification doesn’t seem very suitable for methanol purification; it is more appropriate for ammonia synthesis purification.

The low-temperature methanol washing process is widely used in China. Domestic technologies can handle capacities below 60 WT without any issues; Daguang has achieved many successful implementations, and the performance of these systems is quite good

The low-temperature methanol washing process technology is used in several Sinopec companies, as well as in Shenhua Ningxia Coal and Datang’s plants in Ordos. Lurgi’s technology is employed for ammonia synthesis, while Linde’s technology is more suitable for other applications. The practical application of this technology requires solving the issue of methanol consumption

Low-temperature methanol washing primarily takes advantage of the properties of methanol at low temperatures to remove sulfur and carbon, as well as hydrogen sulfide, COS, and crude tar. Old domestic plants that produce synthetic ammonia all have low-temperature methanol washing. However, I believe low-temperature methanol washing is an old process. There are many new processes now.

Low-temperature methanol washing is now more technologically mature and has lower costs; it is primarily used in water-gas purification, and complete sets of equipment can be produced in China