JPS5715822A - Treatment of sulfur oxide in waste gas - Google Patents

Treatment of sulfur oxide in waste gas

Info

Publication number
JPS5715822A
JPS5715822A JP7344981A JP7344981A JPS5715822A JP S5715822 A JPS5715822 A JP S5715822A JP 7344981 A JP7344981 A JP 7344981A JP 7344981 A JP7344981 A JP 7344981A JP S5715822 A JPS5715822 A JP S5715822A
Authority
JP
Japan
Prior art keywords
slurry
waste gas
tank
gypsum
absorbs
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
JP7344981A
Other languages
Japanese (ja)
Inventor
Yoshinobu Kondo
Takao Ban
Shigeteru Kojima
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 Miike Machinery Co Ltd
Mitsui Miike Engineering Corp
Original Assignee
Mitsui Miike Machinery Co Ltd
Mitsui Miike Engineering Corp
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 Miike Machinery Co Ltd, Mitsui Miike Engineering Corp filed Critical Mitsui Miike Machinery Co Ltd
Priority to JP7344981A priority Critical patent/JPS5715822A/en
Publication of JPS5715822A publication Critical patent/JPS5715822A/en
Pending legal-status Critical Current

Links

Landscapes

  • Treating Waste Gases (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE: To improve the rate of removal of SO2 and to improve the purity of byproduct gypsum by containing sodium sulfate in Ca compound slurry at the time of separating and removing the SO2 in waste gas as gypsum by the Ca compound slurry.
CONSTITUTION: The waste gas of a boiler contg. SO2 is fed to an absorbtion and reaction vessel A and a main absorption tower B. Absorbent slurry consisting of CaCO3 slurry of about 5% solid concn. added with Na2SO4 corresponding to about 2.5% of the slurry is prepd. in a circulating absorbent slurry preparing tank 3, and this slurry is fed to a circulating liquid storage tank D. The slurry enters the tower B, where it is allowed to contact with the waste gas and absorbs the SO2 contained therein, thereby removing the same as CaSO4. Part of the slurry enters a circulating liquid storage tank E, from which it is pumped 12 into the vessel A, where it contacts with the waste gas and absorbs the SO2 and O2 contained therein. This slurry is circulated to the tank E. In the tank E, it is oxidized to sulfuric acid radicals by the O2 in the air blown therein and the solids in the slurry are recovered as gypsum of high purity.
COPYRIGHT: (C)1982,JPO&Japio
JP7344981A 1981-05-18 1981-05-18 Treatment of sulfur oxide in waste gas Pending JPS5715822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7344981A JPS5715822A (en) 1981-05-18 1981-05-18 Treatment of sulfur oxide in waste gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7344981A JPS5715822A (en) 1981-05-18 1981-05-18 Treatment of sulfur oxide in waste gas

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49010951A Division JPS5836619B2 (en) 1974-01-28 1974-01-28 Treatment method for sulfur oxides in exhaust gas

Publications (1)

Publication Number Publication Date
JPS5715822A true JPS5715822A (en) 1982-01-27

Family

ID=13518540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7344981A Pending JPS5715822A (en) 1981-05-18 1981-05-18 Treatment of sulfur oxide in waste gas

Country Status (1)

Country Link
JP (1) JPS5715822A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193119A (en) * 1983-04-15 1984-11-01 Ishikawajima Harima Heavy Ind Co Ltd Wet desulfurization method of stack gas
WO2009093575A1 (en) * 2008-01-21 2009-07-30 Mitsubishi Heavy Industries, Ltd. System and method for treating discharge gas from coal-fired boiler
JP2009166013A (en) * 2008-01-21 2009-07-30 Mitsubishi Heavy Ind Ltd Exhaust gas treatment system of coal fired boiler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862695A (en) * 1971-12-06 1973-09-01
JPS49125279A (en) * 1972-12-21 1974-11-30

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862695A (en) * 1971-12-06 1973-09-01
JPS49125279A (en) * 1972-12-21 1974-11-30

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193119A (en) * 1983-04-15 1984-11-01 Ishikawajima Harima Heavy Ind Co Ltd Wet desulfurization method of stack gas
JPH0337964B2 (en) * 1983-04-15 1991-06-07 Ishikawajima Harima Heavy Ind
WO2009093575A1 (en) * 2008-01-21 2009-07-30 Mitsubishi Heavy Industries, Ltd. System and method for treating discharge gas from coal-fired boiler
JP2009166013A (en) * 2008-01-21 2009-07-30 Mitsubishi Heavy Ind Ltd Exhaust gas treatment system of coal fired boiler
JP2009166011A (en) * 2008-01-21 2009-07-30 Mitsubishi Heavy Ind Ltd Exhaust gas treatment system and its method of coal fired boiler
JP4719228B2 (en) * 2008-01-21 2011-07-06 三菱重工業株式会社 Exhaust gas treatment system for coal fired boiler
US8088348B2 (en) 2008-01-21 2012-01-03 Mitsubishi Heavy Industries, Ltd. Air pollution control system and method for coal combustion boiler

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