Removing heavy hydrocarbons to prevent defrost shutdowns in LNG plants
US11808517B2 · kind B2 · utility
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10Claims
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Assignee
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Key dates
| Filing date | Dec 7, 2020 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Jan 12, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2280/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Embodiments provide a method for preventing shutdowns in LNG facilities by removing heavy hydrocarbons from the inlet gas supply. According to an embodiment, there is provided an LNG facility treating pipeline quality natural gas that is contaminated with lubrication oil and low concentrations of heavy hydrocarbons. Due to contamination, the behavior of the pipeline quality natural gas is not properly predicted by thermodynamic modeling. In an embodiment, heavy hydrocarbons are removed by a drain system in a heat exchanger. In an embodiment, heavy hydrocarbons are removed by a treatment bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.