JPS56121614A - Method for removing ammonia in fly ash and its device - Google Patents

Method for removing ammonia in fly ash and its device

Info

Publication number
JPS56121614A
JPS56121614A JP2285780A JP2285780A JPS56121614A JP S56121614 A JPS56121614 A JP S56121614A JP 2285780 A JP2285780 A JP 2285780A JP 2285780 A JP2285780 A JP 2285780A JP S56121614 A JPS56121614 A JP S56121614A
Authority
JP
Japan
Prior art keywords
fly ashes
air
combustion
contg
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
JP2285780A
Other languages
Japanese (ja)
Inventor
Yoshinori Tofuji
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 Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP2285780A priority Critical patent/JPS56121614A/en
Publication of JPS56121614A publication Critical patent/JPS56121614A/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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals

Abstract

PURPOSE: To ecomonically treat NH3-contg. fly ashes by heating the NH3-contg. fly ashes to allow NH3 to decompose and evaporate, utilizing this for removal of NOX and recovering the heat of the fly ashes by air for combustion.
CONSTITUTION: In a denitration reactor 4 provided on the lower stream side of the economizer 2 of a coal firing boiler 1, NH3 is injected from a nozzle 3. A small amount of unreacted NH3 reacts with the SO3 in the gas and is bound or adsorbed by the fly ashes. The NH3-contg. fly ashes collected in a dust collector 6 are introduced via a cyclone 11 into an NH3 removing heater 15, where the NH3 content is thermally decomposed and evaporated by a combustion gas. The gas is then flowed through a line 24 into the upper stream side of the reactor 4. The high-temp. fly ashes removed of NH3 are introduced into a heat recovery cooler 27, where heat is recovered therefrom by the combustion air taken out from the outlet of steam air heater 7. The air of elevated temp. is returned to the combustion air lower stream side of the outlet of the air heater 5.
COPYRIGHT: (C)1981,JPO&Japio
JP2285780A 1980-02-27 1980-02-27 Method for removing ammonia in fly ash and its device Pending JPS56121614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2285780A JPS56121614A (en) 1980-02-27 1980-02-27 Method for removing ammonia in fly ash and its device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2285780A JPS56121614A (en) 1980-02-27 1980-02-27 Method for removing ammonia in fly ash and its device

Publications (1)

Publication Number Publication Date
JPS56121614A true JPS56121614A (en) 1981-09-24

Family

ID=12094382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2285780A Pending JPS56121614A (en) 1980-02-27 1980-02-27 Method for removing ammonia in fly ash and its device

Country Status (1)

Country Link
JP (1) JPS56121614A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110311423A1 (en) * 2008-12-22 2011-12-22 Howard Morgan Clarke Processing of off-gas from waste treatment
CN112591766A (en) * 2020-11-18 2021-04-02 苏州西热节能环保技术有限公司 Device and method for removing and utilizing ammonia in ash of coal-fired power plant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110311423A1 (en) * 2008-12-22 2011-12-22 Howard Morgan Clarke Processing of off-gas from waste treatment
US9925491B2 (en) 2008-12-22 2018-03-27 Pyropure Limited Processing of off-gas from waste treatment
CN112591766A (en) * 2020-11-18 2021-04-02 苏州西热节能环保技术有限公司 Device and method for removing and utilizing ammonia in ash of coal-fired power plant

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