Working fluid compositions for use in semi-closed brayton cycle gas turbine power systems
US6824710B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2001 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Feb 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A semi-closed combined cycle power system 100 is provided which can also convert an open combined cycle gas turbine 10 into a non-polluting zero emissions power system. The prior art open combined cycle gas turbine 10 includes a compressor 20 which compresses air A′ and combusts the air A′ with a fuel, such as natural gas. The products of combustion and the remaining portions of the air form the exhaust E′ which is expanded through the turbine 40. The turbine 40 drives the compressor 20 band outputs power. The exhaust E′ exits the turbine 40 and then can optionally be routed through a heat recovery steam generator 50 to function as a combined cycle. According to this invention, the exhaust E′ is not emitted into the atmosphere, but rather is routed to a divider 110. The divider 110 includes two outlets for the exhaust E′ including a return duct 120 and a separation duct 130 which both receive a portion of the exhaust E′. The return duct 120 routes a portion of the exhaust E′ back to the compressor 20. Before reaching the compressor 20, an oxygen duct 150 adds additional oxygen to the exhaust E′ to form a gas mixture C which incl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.