Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1980-06-26
1982-10-05
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
60653, 60677, F01K 1700
Patent
active
043522700
ABSTRACT:
A method and apparatus for extracting steam from a steam turbine and adjusting the temperature and pressure for a process. Steam is extracted from the first section of the turbine and is throttled to a desired pressure for use in the process. After the extracted steam is throttled it is transmitted to a suction port of a jet pump. If the pressure of the extracted steam entering the jet pump suction port is less than the desired process pressure, high pressure steam is routed to an inlet port of the jet pump. Steam leaving the jet pump may be desuperheated. Regulation of the steam flow between the first and second section turbines increased extraction pressure. At some point total efficiency of turbine operation and process operation can be improved by extracting steam from a second, higher pressure extraction location. Such extracted steam is throttled to the desired pressure and transmitted from the second pressure reducing station to a second jet pump along with steam from the second extraction location, as the steam flow rate from the first to the second section turbine is increased.
REFERENCES:
patent: 3979914 (1976-09-01), Weber
patent: 4214451 (1980-07-01), Coombes et al.
patent: 4272962 (1981-06-01), Viscovich et al.
Baehr, Jr. F. J.
Husar Stephen F.
Ostrager Allen M.
Westinghouse Electric Corp.
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