Patents
US 9546785 B1: Sweep-based membrane separation process for removing carbon dioxide from exhaust gases generated by multiple combustion sources
- Granted
- 2017-01-17
- Filed
- 2016-06-13 application 15180922
- Type
- Utility · 28 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A gas separation process for treating exhaust gases from multiple combustion sources. The invention involves directing an exhaust gas stream from one combustion step to a carbon capture step. An off-gas stream depleted in carbon dioxide from the carbon capture step is mixed with a second exhaust stream from a second combustion step to form a mixed gas stream. The mixed gas stream is passed as a feed stream across the feed side of a membrane that is selectively permeable to carbon dioxide over nitrogen and carbon dioxide over oxygen. A sweep gas stream, usually air, flows across the permeate side, and picks up the preferentially permeating carbon dioxide. The permeate stream withdrawn from the permeate side of the membrane is then recycled back to the combustor.
Source: PVGPATDIS, file of 2026-04-10 (ipg170117.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Membrane Technology and Research, Inc. 62 patents | US company or organization | Newark, CA | MEMBRANE TECHNOLOGY AND RESEARCH, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Richard W. Baker | Palo Alto, CA | 35 | PVGPATDIS, file of 2026-04-10 | |
| Timothy C. Merkel | San Jose, CA | 28 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F23J | Removal or treatment of combustion products or combustion residues; flues | F23J15/02 | PVGPATDIS, file of 2026-04-10 |
| B01D | Separation | B01D53/229 | PVGPATDIS, file of 2026-04-10 |
| F23C | Methods or apparatus for combustion using fluid fuel or solid fuel suspended in ; a carrier gas or; air | F23C6/02 | PVGPATDIS, file of 2026-04-10 |
| F23G | Cremation furnaces; consuming waste products by combustion | F23G5/006 | PVGPATDIS, file of 2026-04-10 |
| F23L | Supplying air or non-combustible liquids or gases to combustion apparatus in general ; valves or dampers specially adapted for controlling air supply or draught in combustion apparatus ; inducing draught in combustion apparatus; tops for chimneys or ventilating shafts; terminals for flues | F23L7/007 | PVGPATDIS, file of 2026-04-10 |
| Y02A | Technologies for adaptation to climate change | Y02A50/20 | PVGPATDIS, file of 2026-04-10 |
| Y02C | Capture, storage, sequestration or disposal of greenhouse gases [ghg] | Y02C20/40 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E20/32 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2016-12-08 | Assignment Assignment of assignor's interest | BAKER, RICHARD W signed 2016-12-08 MERKEL, TIMOTHY C signed 2016-12-08 | MEMBRANE TECHNOLOGY AND RESEARCH, INC. NEWARK, CA | 40605/58 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.