METHOD AND SYSTEM FOR OPERATING PLANT

Title:

METHOD AND SYSTEM FOR OPERATING PLANT

Document Type and Number:

WIPO Patent Application WO/2010/090307

Kind Code:

A1

Abstract:

A method of operating a plant which includes a low-pressure feed water heater, a deaerator, and a high-pressure feed water heater that have been disposed in this order in a water supply line extending from a condenser to a steam generator and in which high-temperature feed water is led to the steam generator. The method comprises injecting an oxidant from an oxidant injection line in order to form a coating film on the surfaces of the constituent materials of the water supply line, low-pressure feed water heater, deaerator, high-pressure feed water heater, and the like which come into contact with high-temperature feed water, the coating film inhibiting dissolution of the constituent elements of these constituent materials. Furthermore, a corrosion inhibitor is introduced from a corrosion inhibitor introduction line in order to adhere the corrosion inhibitor to the surfaces of the constituent materials which suffer corrosion that is accelerated by the flow of the feed water.

Inventors:

SHIBASAKI OSAMU
OKAMURA MASATO
YAMAMOTO SEIJI
MIYAZAKI TOYOAKI
YAMAZAKI KENJI
KANEKO TETSUJI
KOBAYASHI MINORU

Application Number:

PCT/JP2010/051772

Publication Date:

August 12, 2010

Filing Date:

February 08, 2010

Export Citation:

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Assignee:

TOSHIBA KK (JP)
SHIBASAKI OSAMU
OKAMURA MASATO
YAMAMOTO SEIJI
MIYAZAKI TOYOAKI
YAMAZAKI KENJI
KANEKO TETSUJI
KOBAYASHI MINORU

International Classes:

C23F11/08; G21C19/307; G21D1/00; G21D3/08

Foreign References:

JPH10339793A	1998-12-22
JP2004020411A	2004-01-22
JP2006038811A	2006-02-09
JP2003232886A	2003-08-22
JP2005195346A	2005-07-21
JP2002071883A	2002-03-12
JPS54101734A	1979-08-10
JPH0426784A	1992-01-29
JP2004012162A	2004-01-15
JPH10339793A	1998-12-22

Other References: