Method and apparatus for energy reduction in acid gas capture

Details Method and apparatus for energy reduction in acid gas capture Method and apparatus for energy reduction in acid gas capture

2011-08-09

2011-08-09

Smith, Duane (Department: 1776)

Gas separation: processes

Liquid contacting

Inorganic gas, liquid particle, or solid particle sorbed

C095S236000

Reexamination Certificate

active

07993433

ABSTRACT:
The invention relates to a new method for removing and recovering of acid gases from a gaseous mixture in an absorption plant by adding an organic acid to a stream of the rich absorbent in the desorber in order to release acid gas by shifting the acid gas equilibrium towards the gas side, and the organic acid is subsequently separated from the absorbent. With this method, the energy consumption of the process is substantially reduced. The invention also relates to an apparatus for performing this method.

REFERENCES:
patent: 6312655 (2001-11-01), Hesse et al.
patent: 6395678 (2002-05-01), Summers et al.
patent: 2004/0253159 (2004-12-01), Hakka et al.
patent: 1 016 445 (2000-07-01), None
patent: 484714 (1938-05-01), None
Erga, O., et al. “Carbon Dioxide Recovery by Means of Aqueous Amines.”Energy Convers. Mgmt.(1995) vol. 36, No. 6-9, pp. 387-392.

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