What are the other types of amine
In the following table, the first, second and third types of amines are compared in terms of commonly used concentrations and adsorption capacity of acid gases: Amine name Molecular Weight Normal concentration (weight percentage) Acid adsorption capacity (IB MOL / T) Monoethanolamine 61 15-20 2.53 Diethanolamine 105 25-35 2.52 Methyl diethanolamine 119 35-50 4.16 Also, the first and second type amines react directly and rapidly with hydrogen sulfide and carbon dioxide. The third type of amine reacts directly and rapidly with hydrogen sulfide, but reacts slowly with carbon dioxide in two steps. Therefore, by limiting the contact time of amines and acid gases, hydrogen sulfide can be selectively separated. Properties of monoethanolamine Advantages Disadvantages High reactivity Wasted up due to evaporation low price High energy required for regeneration Possibility of separation of carbonyl sulfide and carbon disulfide Impossibility of selective separation of hydrogen sulfide in the presence of carbon dioxide…