JPS5763117A - Stack gas desulfurization method - Google Patents

Stack gas desulfurization method

Info

Publication number
JPS5763117A
JPS5763117A JP55135880A JP13588080A JPS5763117A JP S5763117 A JPS5763117 A JP S5763117A JP 55135880 A JP55135880 A JP 55135880A JP 13588080 A JP13588080 A JP 13588080A JP S5763117 A JPS5763117 A JP S5763117A
Authority
JP
Japan
Prior art keywords
tower
fed
adsorption
active carbon
sulfuric acid
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
JP55135880A
Other languages
Japanese (ja)
Inventor
Masakatsu Nishimura
Hiromitsu Asano
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 Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP55135880A priority Critical patent/JPS5763117A/en
Publication of JPS5763117A publication Critical patent/JPS5763117A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate the need for purchasing of sulfuric acids, reduce the amt. of treating SO2 in an absorption tower and reduce the usage of absorbents by using the sulfuric acid recovering the SO2 in waste gases through adsorption with active carbon for controlling pH in an absorbing liquid oxidation process by a lime gypsum method.
CONSTITUTION: After the waste gas 1 of a boiler is cooled and removed of dust in a cooling tower 2, it is adsorbed away of part of SO2 contained therein by the active carbon 31 of an adsorption tower 30, thence it is fed to an absorption tower 7 where it is absorbed away of SO2 by the lime slurry circulating therein. This gas is released. The active carbon 31 after the adsorption of SO2 is washed, and the water contg. the desorbed H2SO4 is ded to the tower 2 where it is brought in contact with the waste gas to concentrate H2SO4. The liquid contg. soot and concd. H2SO4 is fed to a thickener 34, where soot is settled and separated. Thw overflowing liquid of the thickener 34 is stored as a dilute sulfuric acid in a sulfuric acid tank 17, and is fed to a pH control tank 14 by a pump 15. It is used for oxidation of unreacted CaCO3 to CaSO4 and pH control of the slurry to be supplied to an oxidation tower 19.
COPYRIGHT: (C)1982,JPO&Japio
JP55135880A 1980-10-01 1980-10-01 Stack gas desulfurization method Pending JPS5763117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55135880A JPS5763117A (en) 1980-10-01 1980-10-01 Stack gas desulfurization method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55135880A JPS5763117A (en) 1980-10-01 1980-10-01 Stack gas desulfurization method

Publications (1)

Publication Number Publication Date
JPS5763117A true JPS5763117A (en) 1982-04-16

Family

ID=15161926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55135880A Pending JPS5763117A (en) 1980-10-01 1980-10-01 Stack gas desulfurization method

Country Status (1)

Country Link
JP (1) JPS5763117A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4696804A (en) * 1985-02-05 1987-09-29 Mitsubishi Jukogyo Kabushiki Kaisha Method for treating SO2, SO3 and dust simultaneously
US5811066A (en) * 1994-11-18 1998-09-22 Steag Aktiengesellschaft Method and device for scrubbing flue gases
US6090355A (en) * 1995-11-13 2000-07-18 Steag Aktiengesellschaft Method and device for cleaning flue gases from furnaces
CN1126594C (en) * 1995-06-28 2003-11-05 三菱重工业株式会社 Flue-gas treatment system
US6814948B1 (en) 1995-06-28 2004-11-09 Mitsubishi Jukogyo Kabushiki Kaisha Exhaust gas treating systems
JP2009520600A (en) * 2005-12-19 2009-05-28 フルオー・テクノロジーズ・コーポレイシヨン Two-stage quenching cleaning device
CN110898608A (en) * 2018-09-18 2020-03-24 中国石化工程建设有限公司 System and method for adsorbing and purifying flue gas by using active coke

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838278A (en) * 1971-09-20 1973-06-05
JPS4940296A (en) * 1972-08-24 1974-04-15

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838278A (en) * 1971-09-20 1973-06-05
JPS4940296A (en) * 1972-08-24 1974-04-15

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4696804A (en) * 1985-02-05 1987-09-29 Mitsubishi Jukogyo Kabushiki Kaisha Method for treating SO2, SO3 and dust simultaneously
US5811066A (en) * 1994-11-18 1998-09-22 Steag Aktiengesellschaft Method and device for scrubbing flue gases
CN1126594C (en) * 1995-06-28 2003-11-05 三菱重工业株式会社 Flue-gas treatment system
US6814948B1 (en) 1995-06-28 2004-11-09 Mitsubishi Jukogyo Kabushiki Kaisha Exhaust gas treating systems
US6090355A (en) * 1995-11-13 2000-07-18 Steag Aktiengesellschaft Method and device for cleaning flue gases from furnaces
JP2009520600A (en) * 2005-12-19 2009-05-28 フルオー・テクノロジーズ・コーポレイシヨン Two-stage quenching cleaning device
CN110898608A (en) * 2018-09-18 2020-03-24 中国石化工程建设有限公司 System and method for adsorbing and purifying flue gas by using active coke
CN110898608B (en) * 2018-09-18 2022-02-08 中国石化工程建设有限公司 System and method for adsorbing and purifying flue gas by using active coke

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