Converting to DEA/MDEA mix ups sweetening capacity

Mixing amines can be the best method for increasing capacity or improving efficiency in an amine sweetening unit. In many cases, it may be possible simply to add a 2nd amine to the existing solution on the fly, or as the unit is running. Union Pacific Resources' Bryan, Texas, gas plant provides...

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Bibliographic Details
Published in:The Oil & gas journal 1996-08, Vol.94 (33), p.63-67
Main Authors: SPEARS, M.L, HAGAN, K.M, BULLIN, J.A, MICHALIK, C.J
Format: Magazinearticle
Language:English
Subjects:
Acids
Additives
Amines
Applied sciences
Bottlenecks
Carbon dioxide
Case studies
Corrosion
Energy
Exact sciences and technology
Feasibility studies
Fuels
Gas conditioning and treatments. Desulphurization. Liquefaction
Gas industry
Industrial plants
Manufacturing
Natural gas industry
Process planning
Reservoirs
Shutdowns
Simulation
Technology
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Summary:Mixing amines can be the best method for increasing capacity or improving efficiency in an amine sweetening unit. In many cases, it may be possible simply to add a 2nd amine to the existing solution on the fly, or as the unit is running. Union Pacific Resources' Bryan, Texas, gas plant provides one example. The plant was converted from diethanolamine (DEA) to a DEA/methyl DEA mixture after analysis by TSWEET, a process-simulation program. After conversion, carbon dioxide levels in the sales gas fell to less than pipeline specifications. Data were taken for the absorber at a constant amine circulation of 120 gpm. A comparison of the performance data to the values calculated by the program proved the accuracy of TSWEET.
ISSN:0030-1388
1944-9151