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JPS5637034A - Waste gas treatment of nitric and fluoric acid tank - Google Patents

Waste gas treatment of nitric and fluoric acid tank

Info

Publication number
JPS5637034A
JPS5637034A JP11027779A JP11027779A JPS5637034A JP S5637034 A JPS5637034 A JP S5637034A JP 11027779 A JP11027779 A JP 11027779A JP 11027779 A JP11027779 A JP 11027779A JP S5637034 A JPS5637034 A JP S5637034A
Authority
JP
Japan
Prior art keywords
waste gas
heat exchanger
nitric
gas treatment
acid tank
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
JP11027779A
Other languages
Japanese (ja)
Other versions
JPS6227843B2 (en
Inventor
Yoshito Kawaguchi
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.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP11027779A priority Critical patent/JPS5637034A/en
Publication of JPS5637034A publication Critical patent/JPS5637034A/en
Publication of JPS6227843B2 publication Critical patent/JPS6227843B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

PURPOSE: To attain to the continuous operation of the apparatus by maintaining a heat exchanging element of a heat exchanger at a m.p. of NH3NO3 or more, pref., a decomposition temp. thereof or more in the titled treating system and preventing said heat exchanger from being clogged.
CONSTITUTION: A waste gas outlet of a waste gas heating apparatus 6 and the inlet of the heat exchanger receiving the waste gas from a water washing tower 2 of the heat exchanger 5 are connected by a bypass pipe 13 and the heat exchanging element of the heat exchanger 5 is maintained at an m.p. of NH3NO3 or more, pref., a decomposition temp. or more to prevent the heat exchanger 5 from being clogged and the apparatus is continuously operated. For example, a pipe passage 3 connecting the water washing tower 2 and the heat exchanger 5 and a pipe passage 7 of the waste gas outlet of the heating apparatus 6 are connected by a bypass pipe 13 and the heated waste gas is supplied to the waste gas inlet portion of the heat exchanger by controlling a waste gas bypass damper 13a.
COPYRIGHT: (C)1981,JPO&Japio
JP11027779A 1979-08-31 1979-08-31 Waste gas treatment of nitric and fluoric acid tank Granted JPS5637034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11027779A JPS5637034A (en) 1979-08-31 1979-08-31 Waste gas treatment of nitric and fluoric acid tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11027779A JPS5637034A (en) 1979-08-31 1979-08-31 Waste gas treatment of nitric and fluoric acid tank

Publications (2)

Publication Number Publication Date
JPS5637034A true JPS5637034A (en) 1981-04-10
JPS6227843B2 JPS6227843B2 (en) 1987-06-17

Family

ID=14531602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11027779A Granted JPS5637034A (en) 1979-08-31 1979-08-31 Waste gas treatment of nitric and fluoric acid tank

Country Status (1)

Country Link
JP (1) JPS5637034A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011162812A (en) * 2010-02-05 2011-08-25 Nisshin Steel Co Ltd Method for pickling operation of stainless steel strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011162812A (en) * 2010-02-05 2011-08-25 Nisshin Steel Co Ltd Method for pickling operation of stainless steel strip

Also Published As

Publication number Publication date
JPS6227843B2 (en) 1987-06-17

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