Steam power plant and method of and cleaning its steam/water cycle
US6155054A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Aug 13, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B37/486
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The steam generator (1) includes at least an evaporator (8), a low-pressure drum (10), a separator (13) and a blowdown tank (22). A recirculation line (16) extends from the separator (13) to the low-pressure drum (10). A line (12) with a feed unit (11) extends from the low-pressure drum (10) to the evaporator (8). The feed unit (11) is designed for a capacity which is larger than the capacity of normal full-load operation of the steam generator (1). The separator (13) communicates via two differing line sections (18, 20) with the blowdown tank (22). One line section (18) is designed for a large mass flow at a small pressure difference between the separator (13) and the blowdown tank (22). The other line section (20) is designed for a small mass flow at a high pressure difference between separator (13) and blowdown tank (22). In order to clean the working medium during a warm start, part-load or full-load operation, the feed unit (11) is operated at the larger capacity state such that water forms in the separator (13) which then can be drawn off into the blowdown tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.