Sulfur Daily Question 2018.9.5
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Question: What are the advantages of the absorbent MDEA overMEA and DEA? Answer: ① Since MDEA is a tertiary alcohol amine, it lacks reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade easily ； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower.
Answer: ① Since MDEA is a tertiary alcohol amine, it lacks reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade easily； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower.
①Since MDEA is a tertiary alcohol amine, it contains no reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade or deteriorate easily； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower.
①Since MDEA is a tertiary alcohol amine, it contains no reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade or deteriorate easily； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower.
①Since MDEA is a tertiary alcohol amine, it contains no reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade or deteriorate easily； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower.
Answer: ① Since MDEA is a tertiary alcohol amine, it lacks reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade easily； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower.
: ① Since MDEA is a tertiary alcohol amine, it lacks reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade or deteriorate easily；
①Since MDEA is a tertiary alcohol amine, it contains no reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade or deteriorate easily； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower.
①Since MDEA is a tertiary alcohol amine, it contains no reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade or deteriorate easily； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower.
①Since MDEA is a tertiary alcohol amine, it contains no reactive hydrogen atoms in its molecule; as a result, it possesses good chemical stability and the solvent does not degrade or deteriorate easily； ②The foaming tendency and corrosivity of MDEA solutions are also lower than those of MEA and DEA. The concentration of MDEA solutions can exceed 50% (m), and the acid gas load can range from 0.5 to 0.6, or even higher ； ③MDEA is easier to regenerate thanMEA and DEA, and it also has a lower vapor pressure; therefore, the number of regeneration trays can be reduced appropriately ； ④The reaction heat of MDEA (compared to CO2 and H2S) is lower than that of the others