Design of the Williams Field Services Mobile Bay ethane recovery plant
ABB Randall designed, procured and constructed a two train expander plant with a base case design capacity of 525 MMscfd and a hydraulic design capacity of 600 MMscfd. Randall has used its Recycle Reflux Process, proven in other installations, resulting in a calculated ethane recovery of 93% at 525 MMscfd (78% at 600 MMscfd) and ethane rejection. Liquids production creates a design challenge due to the presence of acid gas components such as CO{sub 2}, H{sub 2}S, mercaptans and COS, with the latter three causing the product to fail the copper strip test. The challenge is to remove the components to the required level with minimum cost and in an operator-friendly manner. The following combinations of processes were reviewed: DGA, MDEA and Merichem, COS Hydrolysis and MDEA, MDEA and KOH, Sulfinol, MDEA and SulfaClean; and MDEA and mol sieve. This paper will give a brief description, an illustration and economic impact information of each one. Lastly, the rationale behind the selection of the COS Hydrolysis bed, MDEA absorber and provisions to add an iron sponge bed is discussed.
- Research Organization:
- ABB Randall Corp., Houston, TX (US)
- OSTI ID:
- 20000921
- Report Number(s):
- CONF-990331-
- Resource Relation:
- Conference: Gas Processors Association Seventy-Eighth Annual Convention, Nashville, TN (US), 03/01/1999--03/03/1999; Other Information: PBD: 1999; Related Information: In: Gas Processors Association seventy-eighth annual convention, proceedings, 393 pages.
- Country of Publication:
- United States
- Language:
- English
Similar Records
U.S. gas conditioning and processing plant survey results
Linam Ranch cryogenic gas plant: A design and operating retrospective