Claims
- 1. A gas and steam turbine plant, comprising:
- a steam turbine having a water-steam loop defining a water flow direction;
- a gas turbine defining a gas flow direction;
- a waste heat boiler connected downstream of said gas turbine as seen in the gas flow direction, said waste heat boiler including a high-pressure preheater connected in said water-steam loop, a high-pressure heater connected downstream of said high-pressure preheater as seen in the water flow direction, a low-pressure heater connected upstream of said high-pressure preheater as seen in the water flow direction, and a medium-pressure heater with an evaporator;
- a coal gasification plant connected upstream of said gas turbine;
- an outflow line leading into said coal gasification plant and being connected to said water-steam loop downstream of said high-pressure preheater, as seen in water flow direction; and
- a water-steam drum communicating with said outflow line and being connected to said evaporator and said high-pressure preheater.
- 2. The plant according to claim 1, including a valve connected between said outflow line and said water-steam drum.
- 3. The plant according to claim 1, wherein said steam turbine has a medium-pressure part, and said waste heat boiler has an intermediate superheater connected between said water-steam drum and said medium-pressure part.
- 4. The plant according to claim 1, wherein said high-pressure preheater has two series-connected heating surfaces.
- 5. The plant according to claim 4, wherein said water-steam drum is connected to said water-steam loop between said heating surfaces of said high-pressure preheater.
- 6. The plant according to claim 4, wherein said evaporator in said waste heat boiler is disposed between said heating surfaces of said high-pressure preheater.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4123730 |
Jul 1991 |
DEX |
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Parent Case Info
This is a division of application Ser. No. 07/916,033, filed Jul. 17, 1992 now U.S. Pat. No. 5,251,432.
US Referenced Citations (13)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0410111 |
Jan 1991 |
EPX |
0211511 |
Dec 1983 |
JPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
916033 |
Jul 1992 |
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