Use of methanol for hydrate control in expander plants
Conference
·
· Proc. Gas Cond. Conf.; (United States)
OSTI ID:5451401
This paper presents design information for turboexpander plants using methanol for hydrate control. Natural gas generally contains water before processing. High pressure, low temperature, or both favor the combination of water with light hydrocarbon gases to form hydrates. Hydrate forming gases include the C/sub 1/ to C/sub 4/ paraffins and olefins, carbon dioxide, and hydrogen sulfide while hydrocarbons higher than isobutane do not form hydrates. Free water must always be present for hydrates to form. Hydrates, which are solid crystals resembling wet snow, cause problems by plugging pipelines, valves, and other process equipment. Therefore proper equipment design requires the accurate prediction of the limiting conditions at which hydrates are formed from a gas of given composition, i.e., the hydrate point. This discussion covers the following subjects: hydrate depression; Hammerschmidt equation; methanol injection system; sample calculation; other design calculations; comparison of methanol with solid bed hydration. 14 refs.
- Research Organization:
- Fluor Eng and Constr Inc, Irvine, Calif
- OSTI ID:
- 5451401
- Report Number(s):
- CONF-8103134-
- Conference Information:
- Journal Name: Proc. Gas Cond. Conf.; (United States)
- Country of Publication:
- United States
- Language:
- English
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