Steam power plant and method of and cleaning its steam/water cyc

Details Steam power plant and method of and cleaning its steam/water cyc Steam power plant and method of and cleaning its steam/water cyc

1999-08-13

2000-12-05

Nguyen, Hoang

Power plants

Motive fluid energized by externally applied heat

Having apparatus cleaning, sealing, lubricating, purging,...

60670, F01K 100

Patent

active

06155054&

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.

REFERENCES:
patent: 3021824 (1962-02-01), Profos
patent: 4843824 (1989-07-01), Mushines
patent: 4901532 (1990-02-01), Silvestri, Jr. et al.
patent: 4976100 (1990-12-01), Lee
patent: 5297389 (1994-03-01), Athey et al.

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