Causes and remedies for mercury exposure to aluminum coldboxes
- Amoco Exploration and Production, Evanston, WY (United States)
The Anschutz Ranch East Plant (ARE) processes 340 MMscfd in its three train natural gas liquid/nitrogen recovery unit (NGL/NRU). The inlet mercury gas content has been measured to be between 8 and 24 ug/Nm{sup 3}. Since early 1991 this plant has experienced degradation of the sulfur impregnated carbon mercury removal material, change out of the mercury removal material, liquid metal embrittlement of coldbox aluminum piping, successful coldbox repairs, and has been able to return to operation. The plant currently produces 17,000 bpd of NGL, 175 MMscfd of sales quality gas, and 135 MMscfd of N{sub 2} for sales and re-injection. This paper will outline mercury removal operation and monitoring, the piping failure and return to service, and coldbox contingencies currently in place.
- OSTI ID:
- 418211
- Report Number(s):
- CONF-960348--
- Country of Publication:
- United States
- Language:
- English
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