JPS56161823A - Removal of ammonium compound from coal ash - Google Patents

Removal of ammonium compound from coal ash

Info

Publication number
JPS56161823A
JPS56161823A JP6313580A JP6313580A JPS56161823A JP S56161823 A JPS56161823 A JP S56161823A JP 6313580 A JP6313580 A JP 6313580A JP 6313580 A JP6313580 A JP 6313580A JP S56161823 A JPS56161823 A JP S56161823A
Authority
JP
Japan
Prior art keywords
coal ash
gas
ash
coal
decomposed
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.)
Granted
Application number
JP6313580A
Other languages
Japanese (ja)
Other versions
JPS6332494B2 (en
Inventor
Hayamizu Ito
Chiaki Nagai
Kunihiko Mori
Tadashi Shirakata
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.)
Electric Power Development Co Ltd
Kawasaki Heavy Industries Ltd
Original Assignee
Electric Power Development Co Ltd
Kawasaki 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 Electric Power Development Co Ltd, Kawasaki Heavy Industries Ltd filed Critical Electric Power Development Co Ltd
Priority to JP6313580A priority Critical patent/JPS56161823A/en
Publication of JPS56161823A publication Critical patent/JPS56161823A/en
Publication of JPS6332494B2 publication Critical patent/JPS6332494B2/ja
Granted 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
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Chimneys And Flues (AREA)
  • Processing Of Solid Wastes (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

PURPOSE: To contrive to save energy as well as to carry out stable coal burning waste gas treatment by a method wherein an NH3 compound in a coal ash is thermally decomposed by a high temp. combustion gas in the system and a decomposed gas is reutilized as an NH3 source of a denitrification apparatus.
CONSTITUTION: A waste gas of a coal burning boiler 1 is treated by a system consisted of a denitrification apparatus 2, an air preheating apparatus 3, a low temp. dust collecting apparatus 4 and a desulfurization apparatus 6. In this case, a coal ash containing the NH3 compound discharged from the dust collecting apparatus is thrown into a thermal decomposition furnace 13 through an ash hopper 12 and said NH3 compound is thermally decomposed at a temp. of 250W700°C by a high temp. combustion gas of the boiler 1. Then, the coal ash after the thermal decomposition and the decomposed gas are separated in a solid-gas separator 15 and the decomposed gas is returned to a position in front of the denitrification apparatus 2 to be reutilized as an NH3 source. On the other hand, the coal ash is cooled by air in a cooler 18 and, thereafter, transported to an ash treating installation 21. Further, air heated to about 200W500°C after heat exchanged with the high temp. coal ash in the cooler 18 is blown into a coal ash transport pipe 11 of an upstream side of the furnace 13 and used as a source for transporting the NH3 containing coal ash.
COPYRIGHT: (C)1981,JPO&Japio
JP6313580A 1980-05-13 1980-05-13 Removal of ammonium compound from coal ash Granted JPS56161823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6313580A JPS56161823A (en) 1980-05-13 1980-05-13 Removal of ammonium compound from coal ash

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6313580A JPS56161823A (en) 1980-05-13 1980-05-13 Removal of ammonium compound from coal ash

Publications (2)

Publication Number Publication Date
JPS56161823A true JPS56161823A (en) 1981-12-12
JPS6332494B2 JPS6332494B2 (en) 1988-06-30

Family

ID=13220517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6313580A Granted JPS56161823A (en) 1980-05-13 1980-05-13 Removal of ammonium compound from coal ash

Country Status (1)

Country Link
JP (1) JPS56161823A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100469583B1 (en) * 2002-10-28 2005-02-02 한국전력공사 Apparatus and Process for purifying fly ash by using a continuous operating reactor with rotary guide blades
US6945179B2 (en) 1999-08-17 2005-09-20 Wisconsin Electric Power Company Ammonia removal from fly ash

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6945179B2 (en) 1999-08-17 2005-09-20 Wisconsin Electric Power Company Ammonia removal from fly ash
KR100469583B1 (en) * 2002-10-28 2005-02-02 한국전력공사 Apparatus and Process for purifying fly ash by using a continuous operating reactor with rotary guide blades

Also Published As

Publication number Publication date
JPS6332494B2 (en) 1988-06-30

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