The application of MDEA in my country began in the mid-1980s. By the early 1990s, there were only a few sets of MDEA devices in Sichuan in my country’s natural gas purification plants; The cost saving benefits exceeded 20 million yuan. Due to the latecomer advantage of the natural gas industry in my country, the application of MDEA has been promoted and applied again and again after the discovery of the excellent performance of MDEA. As of 2010, in my country’s existing natural gas purification plants, desulfurization and decarbonization devices using MDEA occupy a dominant position.
It can be seen from Table 4 that among the 48 sets of desulfurization and decarbonization devices collected by the author in my country’s natural gas purification plants, there are 36 sets of devices using MDEA aqueous solution as a solvent, plus 8 sets of devices using MDEA mixed solvents, the total There are 44 sets, accounting for 11/12 of the total number of sets, and the processing capacity of the device using MDEA reaches 10 020×104m3/d, accounting for the total capacity of 10426×104m3/d. In the future, my country will build a new natural gas purification plant for desulfurization and decarbonization. Unless there are special circumstances, MDEA should be used as a solvent.
There is no statistical data on the use of MDEA in foreign countries. It is estimated that due to the relative stability of the desulfurization and decarbonization process layout formed in history, the application of MDEA in foreign countries may not be as good as that in my country, and it does not occupy a strong position like in our country. However, it can be seen in the literature that natural gas desulfurization and decarbonization Reports on carbon plants being changed from other processes to MDEA, the following are two transformation examples after entering the 21st century. In addition, there are some new insights related to the MDEA system.
