| 摘要 |
This invention provides novel compositions comprising substituted polyamines as acid gas scrubbing solutions and methods of using the compositions in an industrial system. The invention relates to the use of such polyamine compounds in industrial processes to remove acidic contaminants from natural and industrial fluid streams, such as natural gas, combustion gas, natural gas, synthesis gas, biogas, and other industrial fluid streams. The compositions and methods of the invention are useful for removal, absorption, or sequestration of acidic contaminants and sulfide contaminants including CO2, H2S, RSH, CS2, COS, and SO2. |
| 主权项 |
1. An acid gas scrubbing liquid composition for absorbing acidic contaminants from fluids in an industrial process, the composition comprising:
(a) at least one absorbent component having a general formula: or a carbonate, bicarbonate, urea, or amide thereof, or a salt thereof; wherein
(i) R1 is H, alkyl, or the following structure (A), (ii) R2, R3, R4, R5, R6, R7, R8, and R9 are independently H, alkyl, or aminoalkyl; wherein
(1) if R1 is alkyl or H, o is 1 or 2, at least one of R2 and R3 is not H, and when o is 1, n is 0, and one of R2 and R3 is H, the other is not methyl;(2) if R1 is the structure (A), either:
one of R4 and R5 is H and the other is alkyl or one of R8 or R9 is H and the other is alkyl; oro is 1 or 2, R4, R5, R8, and R9 are H, at least one of R2, R3, R6 or R7 is not H, at least one of R2, R3, R6 or R7 is not alkyl, and when m is 1, n is 0, and R3 and R7 are H, one of R2 and R6 is not methyl when the other is H;(iii) each m, n, and o is independently 0, 1, or 2, and(iv) p and q are independently 0, 1, 2, 3, or 4; and (b) a solvent. |
