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Natural Gas Processing by Alireza Bahadori

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Chapter 10

Natural Gas Sweetening

Abstract

Acid gas constituents present in most natural gas streams are mainly hydrogen sulfide (H2S) and carbon dioxide (CO2). Many gas streams, however, particularly those in a refinery or manufactured gases, may contain mercaptans, carbon sulfide, or carbonyl sulfide. The level of acid gas concentration in the sour gas is an important consideration for selecting the proper sweetening process. Some processes are applicable for removal of large quantities of acid gas, and other processes have the capacity for removing acid gas constituents to ppm range. This chapter covers the minimum process requirements, criteria, and features for accomplishment of process design of gas sweetening units. The basic principles for ...

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