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Title:
ONCE-THROUGH CHEMICAL CLEANING SYSTEM FOR POWER GENERATION BOILER AND ONCE-THROUGH CHEMICAL CLEANING METHOD FOR POWER GENERATION BOILER, USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/135454
Kind Code:
A1
Abstract:
The present invention relates to a once-through chemical cleaning system for a power generation boiler, comprising a circulation pump, a reheater, a blow-off valve, a main steam pipe, a superheater, water wall tubes, an eco inlet check valve, and temporary piping for connecting the same, and including a first flow path connected in the order of circulation pump, temporary piping, reheater, temporary piping, blow-off valve, temporary piping, main steam pipe, superheater, water wall tubes, eco inlet check valve, temporary piping, and circulation pump, and to a once-through chemical cleaning system for a power generation boiler, the system performing reverse circulation for dissolving scales by circulating a chemical cleaning solution for removing scales in the reverse order of the flow path, and then dissolving and removing the scales by forwardly circulating the chemical cleaning solution for removing scales, in a state in which chemicals in the water wall tubes are maintained, as is, without being discharged, through a second flow path connected in the order of circulation pump, temporary piping, reheater, temporary piping, blow-off valve, temporary piping, main steam pipe, superheater, separator, flash tank, temporary piping, and circulation pump.

Inventors:
JEONG, Nyeon Ho (#505-1602, 448 Expo-ro,Yuseong-gu, Daejeon, 34049, KR)
LEE, Seung Min (#204-1602, 448 Expo-ro,Yuseong-gu, Daejeon, 34049, KR)
Application Number:
KR2018/007425
Publication Date:
July 11, 2019
Filing Date:
June 29, 2018
Export Citation:
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Assignee:
KOREA ELECTRIC POWER CORPORATION (55 Jeollyeok-ro, Naju-si, Jeollanam-do, 58322, KR)
International Classes:
F28G9/00; B08B3/08; B08B9/027
Attorney, Agent or Firm:
AJU INTERNATIONAL LAW & PATENT GROUP (12-13th Floor, Gangnam Mirae Tower 174 Saimdang-,Ro,Seocho-gu, Seoul, 06627, KR)
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