Low pressure NGL plant configurations
US7713497B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2002 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Feb 25, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2290/80
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A natural gas liquid plant includes a separator (103) that receives a cooled low pressure feed gas (4), wherein the separator (103) is coupled to an absorber (108) and a demethanizer (110). Refrigeration duty of the absorber (108) and demethanizer (110) are provided at least in part by expansion of a liquid portion of the cooled low pressure feed gas (4) and an expansion of a liquid absorber bottom product (19), wherein ethane recovery is at least 85 mol % and propane recovery is at least 99 mol %. Contemplated configurations are especially advantageous as upgrades to existing plants with low pressure feed gas where high ethane recovery is desirable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.