JPS55165129A - Desulfurizing method for exhaust gas by wet type lime-gypsum process - Google Patents

Desulfurizing method for exhaust gas by wet type lime-gypsum process

Info

Publication number
JPS55165129A
JPS55165129A JP7282379A JP7282379A JPS55165129A JP S55165129 A JPS55165129 A JP S55165129A JP 7282379 A JP7282379 A JP 7282379A JP 7282379 A JP7282379 A JP 7282379A JP S55165129 A JPS55165129 A JP S55165129A
Authority
JP
Japan
Prior art keywords
caso
contg
suspension
oxygen
exhaust 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
JP7282379A
Other languages
Japanese (ja)
Inventor
Yasushi Tomisaka
Harumasa Tanabe
Masami Takao
Ichiji Hatakeyama
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP7282379A priority Critical patent/JPS55165129A/en
Publication of JPS55165129A publication Critical patent/JPS55165129A/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
    • C01F11/46—Sulfates
    • C01F11/464—Sulfates of Ca from gases containing sulfur oxides

Landscapes

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

Abstract

PURPOSE: To convert CaSO3 efficiently to CaSO4 so as to improve the quality of CaSO4, by bringing a suspension, which is to be charged to oxidation step and contains CaSO3, into contact with oxygen or with oxygen-contg. gas after a specific quantity of CaCl2 having been added to the suspension.
CONSTITUTION: Exhaust gas contg. SOX is washed with an absorbing soln. Contg. either of CaCO3 or Ca(OH)2 or the both of them, and CaCl2 together with these materials to form a suspension contg. CaSO3. The CaSO3 suspension hereby obtained or a CaSO3 suspension manufactured by dispersing the CaSO3 separated by solid-liquid separation into water, and by addition with 2W28wt% CaCl2, is brought into contact with oxygen gas or with oxygen-contg. gas, hereby CaSO3 is oxidized to CaSO4 efficiently.
COPYRIGHT: (C)1980,JPO&Japio
JP7282379A 1979-06-08 1979-06-08 Desulfurizing method for exhaust gas by wet type lime-gypsum process Pending JPS55165129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7282379A JPS55165129A (en) 1979-06-08 1979-06-08 Desulfurizing method for exhaust gas by wet type lime-gypsum process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7282379A JPS55165129A (en) 1979-06-08 1979-06-08 Desulfurizing method for exhaust gas by wet type lime-gypsum process

Publications (1)

Publication Number Publication Date
JPS55165129A true JPS55165129A (en) 1980-12-23

Family

ID=13500511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7282379A Pending JPS55165129A (en) 1979-06-08 1979-06-08 Desulfurizing method for exhaust gas by wet type lime-gypsum process

Country Status (1)

Country Link
JP (1) JPS55165129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08947A (en) * 1994-06-16 1996-01-09 Hokkaido Electric Power Co Inc:The Agent and process for treatment of exhaust gas

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5377889A (en) * 1976-12-21 1978-07-10 Kobe Steel Ltd Preventing method for formation of gypsum scale in flue gas desulfurizationtreatment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5377889A (en) * 1976-12-21 1978-07-10 Kobe Steel Ltd Preventing method for formation of gypsum scale in flue gas desulfurizationtreatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08947A (en) * 1994-06-16 1996-01-09 Hokkaido Electric Power Co Inc:The Agent and process for treatment of exhaust gas

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