JPS5761627A - Regeneration of clucium oxide from calcium sulfate utilizing fluidized bed - Google Patents

Regeneration of clucium oxide from calcium sulfate utilizing fluidized bed

Info

Publication number
JPS5761627A
JPS5761627A JP55133436A JP13343680A JPS5761627A JP S5761627 A JPS5761627 A JP S5761627A JP 55133436 A JP55133436 A JP 55133436A JP 13343680 A JP13343680 A JP 13343680A JP S5761627 A JPS5761627 A JP S5761627A
Authority
JP
Japan
Prior art keywords
fluidized bed
calcium
calcium oxide
calcium sulfate
oxide
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
JP55133436A
Other languages
Japanese (ja)
Inventor
Yuichi Fujioka
Shinichiro Fukuyama
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 JP55133436A priority Critical patent/JPS5761627A/en
Publication of JPS5761627A publication Critical patent/JPS5761627A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/02—Oxides or hydroxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE: Calcium sulfate which is formed on the desulfurization of exhaust gases from heavy oil or coal combustion with calcium oxide is treated in a specific fluidized bed-type regeneration furnace to convert the calcium sulfate into calcium oxide with the formation of a small amount of calcium sulfide.
CONSTITUTION: The air box is formed by use of a porous distribution plate 12 under the fluidized bed furnace and separated into two sections 13A and 13B with a plate 19. The mixed particles of calcium sulfate and calcium oxide 14 formed by the removal of sulfur dioxide from the exhaust gas on heavy oil or coal combustion with calcium oxide are placed on the distribution plate 12, the inside of the furnace is heated up to 1,050°C and coal as a fuel is fed from the pipe 25. At the same time, air is fed from the pipe 20 into the air box 13A and the exhaust gas of low oxygen concentration is fed to the box 13B to form the fluidized bed 11. The feed rate of the coal is adjusted to about 0.8 to the air feed rate to reduce the formation of calcium sulfide and increase the calcium oxide content.
COPYRIGHT: (C)1982,JPO&Japio
JP55133436A 1980-09-25 1980-09-25 Regeneration of clucium oxide from calcium sulfate utilizing fluidized bed Pending JPS5761627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55133436A JPS5761627A (en) 1980-09-25 1980-09-25 Regeneration of clucium oxide from calcium sulfate utilizing fluidized bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55133436A JPS5761627A (en) 1980-09-25 1980-09-25 Regeneration of clucium oxide from calcium sulfate utilizing fluidized bed

Publications (1)

Publication Number Publication Date
JPS5761627A true JPS5761627A (en) 1982-04-14

Family

ID=15104724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55133436A Pending JPS5761627A (en) 1980-09-25 1980-09-25 Regeneration of clucium oxide from calcium sulfate utilizing fluidized bed

Country Status (1)

Country Link
JP (1) JPS5761627A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133535U (en) * 1983-02-28 1984-09-06 神崎製紙株式会社 Powder storage device
JP2011020881A (en) * 2009-07-15 2011-02-03 Akita Univ Method for converting calcium sulfate-containing material into calcium oxide and elemental sulfur, and method and system for recycling calcium sulfate-containing material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133535U (en) * 1983-02-28 1984-09-06 神崎製紙株式会社 Powder storage device
JPH0144501Y2 (en) * 1983-02-28 1989-12-22
JP2011020881A (en) * 2009-07-15 2011-02-03 Akita Univ Method for converting calcium sulfate-containing material into calcium oxide and elemental sulfur, and method and system for recycling calcium sulfate-containing material

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