Production of biomethane using multiple types of membrane
US10589215B2 · kind B2 · utility
6Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2017 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Jan 17, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for recovering methane from digester biogas or landfill gas. More specifically, the invention pertains to a method for producing biomethane that removes impurities from a compressed digester biogas with staged membrane modules of at least two different types, to produce a biomethane having at least 94% CH4, below 3% of CO2, and below 4 ppm of H2S.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.