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Presented by Peter Chandler, Air Products and Chemicals in London 18 February 1998.
There are more than 30 processes available for the removal of acid gas species from natural gas and refinery streams. These acid gas species (typically hydrogen sulphide and carbon dioxide) have to be removed to reduce toxicity and prevent corrosion in natural gas transmission systems, and to prevent catalyst poisoning and corrosion in refineries.
Of all the processes available, the most widely used is Amine Treatment. Over the years these have been dogged by the same operational difficulties regardless of the type of amine used. These can be broadly categorised as corrosion. Amine degradation and foaming.
This paper looks at some of the causes of these operating difficulties and discusses how they may be overcome based on global experience gained by working with operating companies.