BR0206055A - Método para regeneração de sulfato de cálcio - Google Patents

Método para regeneração de sulfato de cálcio

Info

Publication number
BR0206055A
BR0206055A BR0206055-8A BR0206055A BR0206055A BR 0206055 A BR0206055 A BR 0206055A BR 0206055 A BR0206055 A BR 0206055A BR 0206055 A BR0206055 A BR 0206055A
Authority
BR
Brazil
Prior art keywords
calcium sulfate
regeneration method
auxiliary
calcium sulphate
weight
Prior art date
Application number
BR0206055-8A
Other languages
English (en)
Inventor
Yoshimi Goto
Kyaw Kyaw
Tetsushi Iwashita
Hitoki Matsuda
Original Assignee
Yabashi Ind 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 Yabashi Ind Co Ltd filed Critical Yabashi Ind Co Ltd
Publication of BR0206055A publication Critical patent/BR0206055A/pt

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
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/73—After-treatment of removed components
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/041—Oxides or hydroxides
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3433—Regenerating or reactivating of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
    • B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
    • 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
    • C01B17/42—Sulfides or polysulfides of magnesium, calcium, strontium, or barium
    • C01B17/44—Sulfides or polysulfides of magnesium, calcium, strontium, or barium by reduction of sulfates
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

"MéTODO PARA REGENERAçãO DE SULFATO DE CáLCIO". O sulfato de cálcio é regenerado a cal em uma temperatura relativamente baixa e em um tempo curto. Em um método de regeneração do cal através de redução do sulfato de cálcio ao escoar um gás redutor que contém 0,5 a 20% por volume de CO e 0,03 a 30% por volume de CO~ 2~, a redução é executada na presença de um auxiliar selecionado do grupo que consiste de Fe~ 2~O~ 3~, MgSO~ 4~ e misturas dos mesmos em uma temperatura de 900 a 1000<198>C. Nos casos em que o auxiliar é Fe~ 2~O~ 3~, a quantidade do mesmo é 0,2 a 10% por peso baseado no peso do sulfato de cálcio em termos de sulfato de cálcio anidro. Nos casos em que o auxiliar é MgSO~ 4~, a quantidade do mesmo é preferivelmente 10 a 50% por peso baseado no peso do sulfato de cálcio em termos de sulfato de cálcio anidro.
BR0206055-8A 2001-09-26 2002-09-25 Método para regeneração de sulfato de cálcio BR0206055A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001294551 2001-09-26
PCT/JP2002/009830 WO2003027019A1 (fr) 2001-09-26 2002-09-25 Procede de recyclage de sulfate de calcium

Publications (1)

Publication Number Publication Date
BR0206055A true BR0206055A (pt) 2003-10-07

Family

ID=19116131

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0206055-8A BR0206055A (pt) 2001-09-26 2002-09-25 Método para regeneração de sulfato de cálcio

Country Status (8)

Country Link
US (1) US20040247519A1 (pt)
EP (1) EP1445238A1 (pt)
JP (1) JP4260626B2 (pt)
KR (1) KR20040051588A (pt)
BR (1) BR0206055A (pt)
RU (1) RU2004112534A (pt)
TW (1) TW555688B (pt)
WO (1) WO2003027019A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011020881A (ja) * 2009-07-15 2011-02-03 Akita Univ 硫酸カルシウム含有材料の酸化カルシウム及び元素硫黄への転換方法、並びに、硫酸カルシウム含有材料のリサイクル方法及びリサイクルシステム
CN110917852B (zh) * 2019-11-21 2021-05-14 江苏省沙钢钢铁研究院有限公司 脱硫灰的资源回收方法及资源回收系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE759979A (fr) * 1965-02-10 1971-06-07 Grillo Werke Ag Procede d'elimination du soufre dans les gaz residuaires
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
JPS6125861Y2 (pt) * 1980-05-12 1986-08-04
JPS5761628A (en) * 1980-09-25 1982-04-14 Mitsubishi Heavy Ind Ltd Regeneration of calcium oxide from calcium sulfate utilizing fluidized bed
JPS58178337U (ja) * 1982-05-26 1983-11-29 バブコツク日立株式会社 脱硫剤再生装置
US4686090A (en) * 1982-12-30 1987-08-11 United States Steel Corporation Desulfurizing of reducing gas stream using a recycle calcium oxide system
JPS6230527A (ja) * 1985-08-01 1987-02-09 Hitachi Zosen Corp ドロマイト系脱硫剤の再生方法
US5292695A (en) * 1992-11-18 1994-03-08 Synthetica Technologies, Inc. Process for reactivating particulate adsorbents
US6024932A (en) * 1993-05-11 2000-02-15 Gas Research Institute Method for the conversion of gypsum to elemental sulfur

Also Published As

Publication number Publication date
EP1445238A1 (en) 2004-08-11
WO2003027019A1 (fr) 2003-04-03
RU2004112534A (ru) 2005-04-10
JP4260626B2 (ja) 2009-04-30
US20040247519A1 (en) 2004-12-09
TW555688B (en) 2003-10-01
KR20040051588A (ko) 2004-06-18
JPWO2003027019A1 (ja) 2005-01-06

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]