PFBC power plant
US4944150A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1989 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Jan 18, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B31/0069
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A power plant burning a fuel at a pressure exceeding the atmospheric pressure includes a combustor formed with cooled walls which form a feed water preheater. A by-pass conduit with a control valve for draining feed water is connected to a feed water conduit between the feed water preheater (the combustor walls) and an evaporator in the combustor. This by-pass conduit may be connected to a feed water tank. At a very low load and in the case of a gas turbine trip, the necessary water flow for cooling the walls of the combustor may exceed the requirement of feed water to the evaporator. Under these operating conditions feed water may be drained off ahead of the evaporator through the by-pass conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.