JPS571427A - Method and apparatus for desulfurizing and denitrifying exhaust gas by wet system - Google Patents

Method and apparatus for desulfurizing and denitrifying exhaust gas by wet system

Info

Publication number
JPS571427A
JPS571427A JP7379480A JP7379480A JPS571427A JP S571427 A JPS571427 A JP S571427A JP 7379480 A JP7379480 A JP 7379480A JP 7379480 A JP7379480 A JP 7379480A JP S571427 A JPS571427 A JP S571427A
Authority
JP
Japan
Prior art keywords
exhaust gas
ammonium sulfite
ammonium sulfate
gas
ammonium
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
JP7379480A
Other languages
Japanese (ja)
Inventor
Minoru Tanaka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP7379480A priority Critical patent/JPS571427A/en
Publication of JPS571427A publication Critical patent/JPS571427A/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 sulfur oxides and nitrogen oxides from the exhaust gas efficiently by a method wherein an absorption desulfurization step and a nitrification step are connected directly to each other and an appropriate alkali is added in both steps when treating the exhaust gas.
CONSTITUTION: The exhaust gas is fed into an absorption desulfurizer 3, where SO2 in the gas is absorbed by a washing liquid such as an aqueous solution of ammonium sulfite which is sprinkled from a pipe 11. The washing liquid containing the used acidic ammonium sulfite is taken out via a pipe 10, the ammonia is added so as to convert the acidic ammonium sulfite into ammonium sulfite, which is recirculated and a portion thereof is used as an impregneating liquid for a catalyst layer 6 of a denitrificator 4. The exhaust gas coming out from the desulfuizer 3 is fed into the denitrificator 4, where the nitrogen oxides in the exhaust gas are brought into reaction with the oxygen in the exhaust gas in the presence of an activated carbon catalyst to form NO2, which is further reduced by ammonium sulfate to produce nitrogen gas and ammonium sulfate. A desorption liquid containing the ammonium sulfate is discharged to the outside of the system.
COPYRIGHT: (C)1982,JPO&Japio
JP7379480A 1980-06-03 1980-06-03 Method and apparatus for desulfurizing and denitrifying exhaust gas by wet system Pending JPS571427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7379480A JPS571427A (en) 1980-06-03 1980-06-03 Method and apparatus for desulfurizing and denitrifying exhaust gas by wet system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7379480A JPS571427A (en) 1980-06-03 1980-06-03 Method and apparatus for desulfurizing and denitrifying exhaust gas by wet system

Publications (1)

Publication Number Publication Date
JPS571427A true JPS571427A (en) 1982-01-06

Family

ID=13528439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7379480A Pending JPS571427A (en) 1980-06-03 1980-06-03 Method and apparatus for desulfurizing and denitrifying exhaust gas by wet system

Country Status (1)

Country Link
JP (1) JPS571427A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120145U (en) * 1983-02-01 1984-08-13 株式会社小森コーポレーション Start-up control device for sheet-fed printing presses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120145U (en) * 1983-02-01 1984-08-13 株式会社小森コーポレーション Start-up control device for sheet-fed printing presses
JPH0425332Y2 (en) * 1983-02-01 1992-06-17

Similar Documents

Publication Publication Date Title
CA2343640A1 (en) Process for controlling ammonia slip in the reduction of sulfur dioxide emission
US4024219A (en) Process for removing nitrogen oxide from a waste gas
US5827488A (en) Process for removing SO2 and NOx from a gaseous stream
US4038367A (en) Process for the removal of SOx and NOx from waste gases using alkali metal or alkaline earth metal iodide
JPS571427A (en) Method and apparatus for desulfurizing and denitrifying exhaust gas by wet system
JPS5781818A (en) Method and equipment for semi-dry waste gas desulfurization and denitration
JPS52114580A (en) Purification of tail gas from sulfur recovery unit
JPS5395872A (en) Treating method for tail gas
KR100228220B1 (en) Process for refining of coke gas by water saturated of oxygen
JPS56130209A (en) Malodor removing method
JP4266267B2 (en) Exhaust gas treatment method and apparatus
JPS57177331A (en) Removal of hydrogen sulfide
JPS5650994A (en) Removal of sulfur and hydrogen cyanide from fuel gas
JPS54139880A (en) Treating method for apparatus exhaust gas
JPS53119270A (en) Treating method for exhaust gas
JPS55111828A (en) Desulfurizing method for exhaust gas
JP2000254453A (en) Process and equipment for waste gas treatment
JPS56105732A (en) Method and apparatus for desulfurizing and denitrating wet type exhaust gas
JPS56126429A (en) Dry type desulfurizing method
JPS5892451A (en) Desulfurization of waste gas
JPS5360880A (en) Wet desulfurizing method for exhaust gas by use of slag
JPS56141818A (en) Dry type sulfur recovering desulfurization method
JPS5318476A (en) Simultaneous treating method for desulfurization and denitration of exhaust gas
JPS5310364A (en) Decomposing method of ammonia
JPS54136572A (en) Treating method for combustion exhaust gas