JPS6475895A - Method of removing scales - Google Patents

Method of removing scales

Info

Publication number
JPS6475895A
JPS6475895A JP23344187A JP23344187A JPS6475895A JP S6475895 A JPS6475895 A JP S6475895A JP 23344187 A JP23344187 A JP 23344187A JP 23344187 A JP23344187 A JP 23344187A JP S6475895 A JPS6475895 A JP S6475895A
Authority
JP
Japan
Prior art keywords
heat
valves
cleaning fluid
time
geothermal water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP23344187A
Other languages
Japanese (ja)
Inventor
Tatsuo Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisaka Works Ltd
Original Assignee
Hisaka Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisaka Works Ltd filed Critical Hisaka Works Ltd
Priority to JP23344187A priority Critical patent/JPS6475895A/en
Publication of JPS6475895A publication Critical patent/JPS6475895A/en
Pending legal-status Critical Current

Links

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  • Removal Of Specific Substances (AREA)

Abstract

PURPOSE:To make it possible to efficiently remove scales including various kinds of hardness components utilizing a small amount of a cleaning fluid for a short period of time by circulating a cleaning fluid on one side of a heat transfer surface and a working fluid on the other side thereof to adjust the pH value of the cleaning fluid to dissolve and exfoliate scales of various kinds of hardness components. CONSTITUTION:At the time of effectively utilizing heat in a heat exchanger 11, valves 13, 15, 18 and 19 are opened, and valves 14, 16, 23 and 24 are closed. Fresh water is raised in temperature by heat recovered from geothermal water. In contrast, at the time of scale removing operation, valves 14, 16, 23 and 24 are opened, and valves 13, 15, 18 and 19 are closed. Geothermal water is circulated to the fresh water circulation side of the heat exchanger 11, and a cleaning fluid of a strong alkalinity having a high pH value is circulated on the geothermal water circulation side. At the time of operation effectively utilizing heat, the temperature of geothermal water heat-recovered is lowered, and the solubility of silica is lowered and scales mainly containing silica components are attached to the heat transfer surface.
JP23344187A 1987-09-16 1987-09-16 Method of removing scales Pending JPS6475895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23344187A JPS6475895A (en) 1987-09-16 1987-09-16 Method of removing scales

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23344187A JPS6475895A (en) 1987-09-16 1987-09-16 Method of removing scales

Publications (1)

Publication Number Publication Date
JPS6475895A true JPS6475895A (en) 1989-03-22

Family

ID=16955091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23344187A Pending JPS6475895A (en) 1987-09-16 1987-09-16 Method of removing scales

Country Status (1)

Country Link
JP (1) JPS6475895A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100472565B1 (en) * 2000-08-25 2005-03-07 주식회사 포스코 a scale removal system of heat exchanger
KR100778751B1 (en) * 2001-08-31 2007-11-23 주식회사 포스코 Scale Removal Method of Plate Type Heat Exchanger by the Using Chemicals
JP2010038438A (en) * 2008-08-05 2010-02-18 Fuji Electric Systems Co Ltd Descaling method and device for heat exchanger
JP2017507682A (en) * 2013-12-31 2017-03-23 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Apparatus and method for controlling the taste of coffee and coffee maker having the apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58205097A (en) * 1982-05-25 1983-11-29 Sumitomo Precision Prod Co Ltd Heat exchanger for geothermal water

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58205097A (en) * 1982-05-25 1983-11-29 Sumitomo Precision Prod Co Ltd Heat exchanger for geothermal water

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100472565B1 (en) * 2000-08-25 2005-03-07 주식회사 포스코 a scale removal system of heat exchanger
KR100778751B1 (en) * 2001-08-31 2007-11-23 주식회사 포스코 Scale Removal Method of Plate Type Heat Exchanger by the Using Chemicals
JP2010038438A (en) * 2008-08-05 2010-02-18 Fuji Electric Systems Co Ltd Descaling method and device for heat exchanger
JP2017507682A (en) * 2013-12-31 2017-03-23 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Apparatus and method for controlling the taste of coffee and coffee maker having the apparatus
US10512356B2 (en) 2013-12-31 2019-12-24 Koninklijke Philips N.V. Apparatus and method for controlling the taste of coffee, and a coffee maker comprising the apparatus
US11129489B2 (en) 2013-12-31 2021-09-28 Koninklijke Philips N.V. Apparatus and method for controlling the taste of coffee, and a coffee maker comprising the apparatus

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