Method for removal of acid gases from a gas flow
First Claim
1. A process for removing acid gases from a gas stream comprisingcontacting an acid-gas-containing gas stream in which the sum of the partial pressures of the acid gases does not exceed 1,500 mbar with an aqueous absorbent at a total pressure of from 50 to 70 bar wherein the absorbent consists of water, at least one tertiary alkanolamine and piperazine at a concentration of 15 to 40% by weight of the absorbent to form an acid-gas-depleted gas stream and an acid-gas-loaded absorbent.
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Abstract
A process is described for removing acid gases from a gas stream in which an acid-gas-containing gas stream in which the sum of the partial pressures of the acid gases does not exceed 1,500 mbar is brought into contact with an aqueous absorbent in an absorption step and an absorbent is used which contains methyldiethanolamine and piperazine at a concentration of at least 8% by weight of the absorbent, an acid-gas-depleted gas stream and an acid-gas-loaded absorbent being obtained.
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Citations
11 Claims
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1. A process for removing acid gases from a gas stream comprising
contacting an acid-gas-containing gas stream in which the sum of the partial pressures of the acid gases does not exceed 1,500 mbar with an aqueous absorbent at a total pressure of from 50 to 70 bar wherein the absorbent consists of water, at least one tertiary alkanolamine and piperazine at a concentration of 15 to 40% by weight of the absorbent to form an acid-gas-depleted gas stream and an acid-gas-loaded absorbent.
Specification