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JPS5560115A - Flow combustion of sludge containing chromium - Google Patents

Flow combustion of sludge containing chromium

Info

Publication number
JPS5560115A
JPS5560115A JP13344178A JP13344178A JPS5560115A JP S5560115 A JPS5560115 A JP S5560115A JP 13344178 A JP13344178 A JP 13344178A JP 13344178 A JP13344178 A JP 13344178A JP S5560115 A JPS5560115 A JP S5560115A
Authority
JP
Japan
Prior art keywords
flow
chromium
combustion
combustion ashes
reducing 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
JP13344178A
Other languages
Japanese (ja)
Inventor
Kazuhiko Oi
Tamotsu Takebayashi
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.)
Mitsui Engineering and Shipbuilding Co Ltd
Original Assignee
Mitsui Engineering and Shipbuilding 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 Mitsui Engineering and Shipbuilding Co Ltd filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Priority to JP13344178A priority Critical patent/JPS5560115A/en
Publication of JPS5560115A publication Critical patent/JPS5560115A/en
Pending legal-status Critical Current

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  • Gasification And Melting Of Waste (AREA)

Abstract

PURPOSE: To reduce sexivalent chromium in combustion ashes into trivalent chromium and take out combustion ashes in lumps, by operating flow-combustion on chromium-containing and dehydrated sludge and bringing the combustion ashes into contact with reducing gas.
CONSTITUTION: An air flow passes through inlet pipe 11 and inlet header 11A and is supplied to head unit 7 from dispersion nozzle 12 inside flow combustion furnace proper 5, and thereby flow medium 21 is caused to flow. Sludge containing chromium, auxiliary fuel and secondary air are supplied respectively from inlets 14, 13 and 15. Sludge, together with auxiliary fuel, is made to flow and gets oxygen and is burned. Combustible materials in head unit 7 enter free board unit 6 subsequently and are completely burned. Then, they are discharged from outlet 16. On the other hand, combustion ashes are brought into contact with reducing gas from reducing gas inlet 10 in reducing unit 8 on the lower part of the flow layer. By this, sexivalent chromium in combustion ashes is reduced to trivalent chromium and is discharged in lumps from discharge unit 9.
COPYRIGHT: (C)1980,JPO&Japio
JP13344178A 1978-10-30 1978-10-30 Flow combustion of sludge containing chromium Pending JPS5560115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13344178A JPS5560115A (en) 1978-10-30 1978-10-30 Flow combustion of sludge containing chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13344178A JPS5560115A (en) 1978-10-30 1978-10-30 Flow combustion of sludge containing chromium

Publications (1)

Publication Number Publication Date
JPS5560115A true JPS5560115A (en) 1980-05-07

Family

ID=15104837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13344178A Pending JPS5560115A (en) 1978-10-30 1978-10-30 Flow combustion of sludge containing chromium

Country Status (1)

Country Link
JP (1) JPS5560115A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009030893A (en) * 2007-07-27 2009-02-12 Takuma Co Ltd Combustion method for suppressing formation of hexavalent chromium from fuel including chromium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5367269A (en) * 1976-11-26 1978-06-15 Ishikawajima Harima Heavy Ind Co Ltd Apparatus for treating sludge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5367269A (en) * 1976-11-26 1978-06-15 Ishikawajima Harima Heavy Ind Co Ltd Apparatus for treating sludge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009030893A (en) * 2007-07-27 2009-02-12 Takuma Co Ltd Combustion method for suppressing formation of hexavalent chromium from fuel including chromium

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