AU2826589A - Cyclical reductive and oxidative decomposition of calcium sulfate in two-stage fluidized bed reactor - Google Patents

Cyclical reductive and oxidative decomposition of calcium sulfate in two-stage fluidized bed reactor

Info

Publication number
AU2826589A
AU2826589A AU28265/89A AU2826589A AU2826589A AU 2826589 A AU2826589 A AU 2826589A AU 28265/89 A AU28265/89 A AU 28265/89A AU 2826589 A AU2826589 A AU 2826589A AU 2826589 A AU2826589 A AU 2826589A
Authority
AU
Australia
Prior art keywords
cyclical
reductive
fluidized bed
bed reactor
calcium sulfate
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
AU28265/89A
Inventor
Thomas D. Wheelock
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.)
Iowa State University Research Foundation ISURF
Original Assignee
University of Iowa Research Foundation UIRF
Iowa State University Research Foundation ISURF
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 University of Iowa Research Foundation UIRF, Iowa State University Research Foundation ISURF filed Critical University of Iowa Research Foundation UIRF
Publication of AU2826589A publication Critical patent/AU2826589A/en
Granted 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
    • C01F11/08—Oxides or hydroxides by reduction of sulfates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/26—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
    • B01J8/28—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations the one above the other
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
    • C01B17/506—Preparation of sulfur dioxide by reduction of sulfur compounds of calcium sulfates
    • 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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
AU28265/89A 1987-12-07 1988-12-06 Cyclical reductive and oxidative decomposition of calcium sulfate in two-stage fluidized bed reactor Granted AU2826589A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12964587A 1987-12-07 1987-12-07
US129645 1998-08-05

Publications (1)

Publication Number Publication Date
AU2826589A true AU2826589A (en) 1989-07-05

Family

ID=22440950

Family Applications (1)

Application Number Title Priority Date Filing Date
AU28265/89A Granted AU2826589A (en) 1987-12-07 1988-12-06 Cyclical reductive and oxidative decomposition of calcium sulfate in two-stage fluidized bed reactor

Country Status (2)

Country Link
AU (1) AU2826589A (en)
WO (1) WO1989005282A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6083862A (en) * 1994-03-14 2000-07-04 Iowa State University Research Foundation, Inc. Cyclic process for oxidation of calcium sulfide
PL186189B1 (en) * 1997-06-23 2003-11-28 Kosicka Dobroslawa Method of processing phosphate gypsum wastes
JP6090394B2 (en) * 2015-08-28 2017-03-08 住友金属鉱山株式会社 Method for producing scandium oxide
WO2019103586A1 (en) 2017-11-22 2019-05-31 Ocp Sa Phosphogypsum decomposition process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3582276A (en) * 1968-07-22 1971-06-01 Elcor Chem Corp Process for recovering a metal oxide and sulfur dioxide from metal sulfate
US3607045A (en) * 1969-10-29 1971-09-21 Univ Iowa State Res Found Inc Process for high temperature gaseous reduction of calcium sulfate
US3729551A (en) * 1971-01-07 1973-04-24 Cons Coal Co Conversion of calcium sulfate to calcium oxide and elemental sulfur
CA1061987A (en) * 1974-05-15 1979-09-11 Iowa State University Research Foundation, Inc. Decomposition of calcium sulfate by zoned reduction and oxidation in a fluidized bed
US4608238A (en) * 1984-07-27 1986-08-26 Wilson Sr Eddie K Process for treating phospho-gypsum waste product from wet-acid process of making phosphoric acid

Also Published As

Publication number Publication date
WO1989005282A1 (en) 1989-06-15

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