Does anyone have study materials on the MDEA decarboxylation process?

:victory: :victory: :victory: :)

Overview of MDEA N-Methyldiethanolamine: It is synthesized using ethylene oxide and monomethylamine as raw materials. Applications of this product include desulfurization of natural gas, refinery gases, and liquid hydrocarbons, as well as decarburization of syngas. It can also be used as an emulsifier in chemical manufacturing and as a raw material in pharmaceutical production. Performance: MDEA is a colorless or slightly yellowish viscous liquid that is highly soluble in water and ethanol, slightly soluble in ether. Its relative density is 1.0425, the melting point is -21°C, the boiling point is 247°C, and the flash point is 260°C. The polyamine method using MDEA for the removal of acidic gases such as CO2 and H2S is a process suitable for removing carbon dioxide as well as sulfides from gases used in the production of synthetic ammonia and methanol, as well as from refinery gases, city gas, and natural gas. Its main advantages are low energy consumption for carbon dioxide removal, high efficiency in desulfurization and decarbonization, and a wide applicable pressure range. This process uses a polyamine solution prepared by adding two types of organic amine composite activators to a methyl diethanolamine (MDEA) solution; this solution possesses both physical and chemical absorption properties for carbon dioxide. The physical properties enable desorption and regeneration at atmospheric pressure, while the chemical properties allow for thermal regeneration using a small amount of solution, thereby ensuring the purity of the gas. Therefore, this process has low heat consumption and high purification efficiency; it can simultaneously remove inorganic sulfur from sulfur-containing gases and carry out hydrolysis of organic sulfur. MDEA reacts slowly with carbon dioxide; the addition of a dual activator can increase the reaction rate and reduce the surface partial pressure of the solution, thereby accelerating mass transfer. It can also improve the desulfurization efficiency. 　　★ Features △ High efficiency in removing carbon dioxide, up to 0.01–0.1% ； 　　△ It has low thermal energy consumption; at a carbon dioxide partial pressure of 0.5 Mpa, it is approximately 1890 KJ (450 Kcal) per cubic meter of carbon dioxide, which is only 1/3 of the value obtained using the Benfield method. At a carbon dioxide partial pressure of 0.7 Mpa, it is approximately 1250 KJ (300 Kcal) per cubic meter of carbon dioxide ； 　　△ In gas sources with a sulfur content of ~lg per standard cubic unit, the total sulfur content can be reduced to 1 ppm ； 　　△ Solvents have virtually no corrosive effect on carbon steel ； 　　△ Low solvent loss – 50 g/ton of ammonia. △ Suitable for a wide range of pressures; carbon dioxide concentrations of 0.1% can be achieved using gas sources with pressures of 0.7 MPa or higher, with low energy consumption ； 　　△ Two-stage absorption and two-stage regeneration require less investment and are simple to operate. 　　Since 1989, nearly 100 small and medium-sized ammonia synthesis plants have adopted this technology, with a production capacity of up to 2 million tons of ammonia per year; the maximum capacity for a single plant is 80,000 to 120,000 tons of ammonia per year. This process employs a two-stage absorption, atmospheric pressure desorption, and steam stripping sequence; this sequence is similar to that of the thermal potassium alkali decarburization process, and therefore it is suitable for newly built ammonia synthesis plants.

Oh, I have. Get in touch with me if you want; I work in this field

I need this too. I hope hbjun001 can send me one as well. My email address is 125176317@qq.com

Are there any simulation materials? If so, could you send me a copy? dflei@163.com. Thank you

4# hbjun001 I really need information on this topic. Could you send it to me? My email address is: sxb0130@163.com

4# hbjun001 I urgently need information on this topic~~~ Could you send me one? ! My email address is: diyici523@163.com Thank you in advance~~~

MDEA works well in natural gas applications but not so well in coking applications, as coke oven gas contains too many impurities, which causes the desulfurization solution to deteriorate.

The Puguang gas field is useful. 9# aliqingfeng

I want that too; please share the one with the materials. Thank you