Method of operating combined plant
US5737911A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 17, 1996 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Jan 17, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01K23/101
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An operating method of a combined plant that has several gas turbines and exhaust heat recovery boilers which generate steam by exhaust gas from the gas turbines wherein exhaust gas from each of the heat recovery boilers is passed through exhaust gas ducts and discharged from a common chimney. The method includes operating a combined plant having plural axes which may be suitably started or stopped and having means for discharging exhaust gas from three or more gas turbines through one common chimney. When the pressure at a joining part of an exit duct of an exhaust heat recovery boiler is a positive pressure or the atmospheric temperature is higher than a preset atmospheric temperature, gas turbines can be re-started or stopped without back-flow of exhaust gas of the gas turbine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.