JPS553562A - Washing method for heat exchanger of exhaust gas denitrater - Google Patents

Washing method for heat exchanger of exhaust gas denitrater

Info

Publication number
JPS553562A
JPS553562A JP7639178A JP7639178A JPS553562A JP S553562 A JPS553562 A JP S553562A JP 7639178 A JP7639178 A JP 7639178A JP 7639178 A JP7639178 A JP 7639178A JP S553562 A JPS553562 A JP S553562A
Authority
JP
Japan
Prior art keywords
washing water
ammonia
water
drained
heat exchanger
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.)
Granted
Application number
JP7639178A
Other languages
Japanese (ja)
Other versions
JPS5652232B2 (en
Inventor
Makoto Ide
Masuo Yamada
Teruhiro Ikee
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP7639178A priority Critical patent/JPS553562A/en
Publication of JPS553562A publication Critical patent/JPS553562A/en
Publication of JPS5652232B2 publication Critical patent/JPS5652232B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

PURPOSE: To completely recover drained washing water and divert it to some other purpose, by using an ammonia-employing alkaline solution as the washing water, supplementing ammonia to the drained washing water to repeatedly use the water and using the finally-drained washing water as supplement water to desulfurization facilities.
CONSTITUTION: The washing water is sucked out of a tank 2 and supplied with the ammonia from an ammonia injector 3. The washing water is then injected into a heat exchanger 1 through an injection nozzle 5 to wash the heat exchanger. The washing water then enters into a drain pit 4. Stripped ammonia gas is sucked by a blower 6 so that the gas is supplied to ammonia-using facilities 7. The pH level of the drained washing water in the drain pit 4 is measured and adjusted to a prescribed value by a pH level adjuster 8 so that the washing water is circulated and used again. After the washing is finished, the washing water in the drain pit 4 is conducted as the supplement water to the desulfurization facilities 7a. The drained washing water is thus completely recovered and diverted to some other purpose.
COPYRIGHT: (C)1980,JPO&Japio
JP7639178A 1978-06-26 1978-06-26 Washing method for heat exchanger of exhaust gas denitrater Granted JPS553562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7639178A JPS553562A (en) 1978-06-26 1978-06-26 Washing method for heat exchanger of exhaust gas denitrater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7639178A JPS553562A (en) 1978-06-26 1978-06-26 Washing method for heat exchanger of exhaust gas denitrater

Publications (2)

Publication Number Publication Date
JPS553562A true JPS553562A (en) 1980-01-11
JPS5652232B2 JPS5652232B2 (en) 1981-12-10

Family

ID=13604014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7639178A Granted JPS553562A (en) 1978-06-26 1978-06-26 Washing method for heat exchanger of exhaust gas denitrater

Country Status (1)

Country Link
JP (1) JPS553562A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6361897A (en) * 1986-09-01 1988-03-18 Mitsubishi Heavy Ind Ltd Cleaning method for exhaust gas economizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6361897A (en) * 1986-09-01 1988-03-18 Mitsubishi Heavy Ind Ltd Cleaning method for exhaust gas economizer

Also Published As

Publication number Publication date
JPS5652232B2 (en) 1981-12-10

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