JPS5584520A - Removing nitrogen oxide - Google Patents

Removing nitrogen oxide

Info

Publication number
JPS5584520A
JPS5584520A JP11519378A JP11519378A JPS5584520A JP S5584520 A JPS5584520 A JP S5584520A JP 11519378 A JP11519378 A JP 11519378A JP 11519378 A JP11519378 A JP 11519378A JP S5584520 A JPS5584520 A JP S5584520A
Authority
JP
Japan
Prior art keywords
thiosulfate
polythionate
wet type
nitrogen oxide
removing nitrogen
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
JP11519378A
Other languages
Japanese (ja)
Inventor
Ataru Wakabayashi
Jun Hasegawa
Kunihiko Yokota
Hiromi Koshizuka
Kazuyuki Shiga
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 Corp
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 JP11519378A priority Critical patent/JPS5584520A/en
Publication of JPS5584520A publication Critical patent/JPS5584520A/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 reduce the amount of consumed thiosulfate in a wet type NOx removal process using thiosulfate by reconverting polythionic acid formed in an absorbent solution to thiosulfate.
CONSTITUTION: NOx in waste gas undergoes a wet type treatment using an aqueous solution which contains thiosulfate as absorbent liquid, whereby part of thiosulfate in the absorbent liquid converts into polythionate. The polythionate is alkali- decomposed using alkali metal or ammonium hydroxide while considering factors of pH 8.5 or more and temperature 40W100°C. This causes most of polythionate to convert into thiosulfate, and regenerated thiosulfate is again used for NOx absorption.
COPYRIGHT: (C)1980,JPO&Japio
JP11519378A 1978-09-21 1978-09-21 Removing nitrogen oxide Pending JPS5584520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11519378A JPS5584520A (en) 1978-09-21 1978-09-21 Removing nitrogen oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11519378A JPS5584520A (en) 1978-09-21 1978-09-21 Removing nitrogen oxide

Publications (1)

Publication Number Publication Date
JPS5584520A true JPS5584520A (en) 1980-06-25

Family

ID=14656646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11519378A Pending JPS5584520A (en) 1978-09-21 1978-09-21 Removing nitrogen oxide

Country Status (1)

Country Link
JP (1) JPS5584520A (en)

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