PROCESS FOR INCREASED SELECTIVITY AND CAPACITY FOR HYDROGEN SULFIDE CAPTURE FROM ACID GASES

Title:

PROCESS FOR INCREASED SELECTIVITY AND CAPACITY FOR HYDROGEN SULFIDE CAPTURE FROM ACID GASES

Document Type and Number:

Japanese Patent JP2022017319

Kind Code:

A

Abstract:

To provide a process for increasing the selectivity and capacity for hydrogen sulfide removal from a natural gas stream using aqueous amine absorbents.SOLUTION: A process for selectively separating H2S from a gas mixture which also contains CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing the pH of the absorbent solution.SELECTED DRAWING: None

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Inventors:

CARLA S PEREIRA
MICHAEL SISKIN
THOMAS INGRAM
GERALD VORBERG
MARTIN ERNST

Application Number:

JP2021168562A

Publication Date:

January 25, 2022

Filing Date:

October 14, 2021

Export Citation:

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Assignee:

EXXONMOBIL RES & ENGINEERING CO
BASF AG

International Classes:

B01D53/14; C01B17/16; C10L3/10

Domestic Patent References:

JP2015515366A	2015-05-28
JP2019503860A	2019-02-14
JPS5254680A	1977-05-04
JPS58124520A	1983-07-25

Foreign References:

WO2015065839A1

2015-05-07

Attorney, Agent or Firm:

Kawaguchi International Patent Office

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