JPS5745327A - Treatment of waste gas containing fluorine type components - Google Patents

Treatment of waste gas containing fluorine type components

Info

Publication number
JPS5745327A
JPS5745327A JP55119531A JP11953180A JPS5745327A JP S5745327 A JPS5745327 A JP S5745327A JP 55119531 A JP55119531 A JP 55119531A JP 11953180 A JP11953180 A JP 11953180A JP S5745327 A JPS5745327 A JP S5745327A
Authority
JP
Japan
Prior art keywords
treatment
liquid
contg
absorbing liquid
waste gas
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
JP55119531A
Other languages
Japanese (ja)
Inventor
Shin Yamashita
Tatsuo Kato
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 JP55119531A priority Critical patent/JPS5745327A/en
Publication of JPS5745327A publication Critical patent/JPS5745327A/en
Pending legal-status Critical Current

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  • Treating Waste Gases (AREA)

Abstract

PURPOSE: To prevent the accumulation of the silica content in absorbing liquid and improve the purity of recovered CaF2 by recovering calcium fluoride from the absorbing liquid after the treatment of waste gases contg. fluorine type components, then adding a magnesium component to settle and remove the silica content then recycling the same.
CONSTITUTION: A treatment method which allows a waste gas 2 contg. fluorine components to contact absorbing liquid 4 of 4.4W5.5pH contg. CaCl2 to remove fluorines, conducts the liquid after the treatment to an absorbing liquid circulating tank 5, adds CaCO3 6, HCl 7 to control its pH to 4W5.5, and recycles the regenerated absorbing liquid regenerated of CaCl2 for treatment of the waste gas 2 contg. fluorine components. At this time, part thereof is fed to the 1st solid-liquid separating machine 10 where the CaF2 12 is recovered, next is is fed to a reaction tank 13, where it is added with an Mg compound 15 such as dolomite and is heated. The resultant MgO.nSiO2 18 is separated in the 2nd solid-liquid separating machine 16. The separated liquid is returned to the tank 5 and is reused.
COPYRIGHT: (C)1982,JPO&Japio
JP55119531A 1980-08-29 1980-08-29 Treatment of waste gas containing fluorine type components Pending JPS5745327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55119531A JPS5745327A (en) 1980-08-29 1980-08-29 Treatment of waste gas containing fluorine type components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55119531A JPS5745327A (en) 1980-08-29 1980-08-29 Treatment of waste gas containing fluorine type components

Publications (1)

Publication Number Publication Date
JPS5745327A true JPS5745327A (en) 1982-03-15

Family

ID=14763583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55119531A Pending JPS5745327A (en) 1980-08-29 1980-08-29 Treatment of waste gas containing fluorine type components

Country Status (1)

Country Link
JP (1) JPS5745327A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003052435A (en) * 2001-07-30 2003-02-25 Acqua Di Parma Srl Improved fixing tool for shoulder strap of hand bag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003052435A (en) * 2001-07-30 2003-02-25 Acqua Di Parma Srl Improved fixing tool for shoulder strap of hand bag

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