JPS54123591A - Exhaust gas treating method - Google Patents

Exhaust gas treating method

Info

Publication number
JPS54123591A
JPS54123591A JP3113078A JP3113078A JPS54123591A JP S54123591 A JPS54123591 A JP S54123591A JP 3113078 A JP3113078 A JP 3113078A JP 3113078 A JP3113078 A JP 3113078A JP S54123591 A JPS54123591 A JP S54123591A
Authority
JP
Japan
Prior art keywords
soln
exhaust gas
gas
contg
salt
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
JP3113078A
Other languages
Japanese (ja)
Inventor
Tadami Kondo
Kazuyuki Shiga
Yasushi Onishi
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.)
Chiyoda Chemical Engineering and Construction Co Ltd
Original Assignee
Chiyoda Chemical Engineering and Construction Co 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 Chiyoda Chemical Engineering and Construction Co Ltd filed Critical Chiyoda Chemical Engineering and Construction Co Ltd
Priority to JP3113078A priority Critical patent/JPS54123591A/en
Publication of JPS54123591A publication Critical patent/JPS54123591A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Treating Waste Gases (AREA)

Abstract

PURPOSE: To remove SO2 at a high rate as well as to efficiently remove NO a high denitration rate by contacting NOx-contg. exhaust gas to an aq. NH3 soln. of a specific pH value contg. a reducing substance and a Co salt as an absorbing soln.
CONSTITUTION: Exhaust gas is contacted to the following absorbing soln. at ordinary temp.Wabout 80°C: an aq. soln. of pH≥6 obtd. by adding a Co salt to an aq. NH3 soln. contg. a reducing substance such as thiosulfate or thiocyanate, or an aq. soln. of pH≥6 obtd. by injecting NH3 into NH3 or Na type waste liquor used to desulfurize coke oven gas and adding a Co salt. The concn. of Co2+ ranges from 10-4 g ion/l to saturation solubility, that of SCN- from 0.01 mol/l to saturation solubility, and that of S2O3 2+ from 0.01 mol/l to saturation solubility. Since NO inexhaust gas can be oxidized with O2 in the gas and removed at a high rate without using O3 and ClO2, this method is economical.
COPYRIGHT: (C)1979,JPO&Japio
JP3113078A 1978-03-20 1978-03-20 Exhaust gas treating method Pending JPS54123591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3113078A JPS54123591A (en) 1978-03-20 1978-03-20 Exhaust gas treating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3113078A JPS54123591A (en) 1978-03-20 1978-03-20 Exhaust gas treating method

Publications (1)

Publication Number Publication Date
JPS54123591A true JPS54123591A (en) 1979-09-25

Family

ID=12322832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3113078A Pending JPS54123591A (en) 1978-03-20 1978-03-20 Exhaust gas treating method

Country Status (1)

Country Link
JP (1) JPS54123591A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006061907A (en) * 2005-09-08 2006-03-09 Hitachi Zosen Corp Formation suppressant and formation suppressing method of chlorinated aromatic compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006061907A (en) * 2005-09-08 2006-03-09 Hitachi Zosen Corp Formation suppressant and formation suppressing method of chlorinated aromatic compound

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