JPS56100621A - Improvement of performance of stack gas desulfurization apparatus - Google Patents

Improvement of performance of stack gas desulfurization apparatus

Info

Publication number
JPS56100621A
JPS56100621A JP128380A JP128380A JPS56100621A JP S56100621 A JPS56100621 A JP S56100621A JP 128380 A JP128380 A JP 128380A JP 128380 A JP128380 A JP 128380A JP S56100621 A JPS56100621 A JP S56100621A
Authority
JP
Japan
Prior art keywords
absorbing liquid
column
tank
absorbing
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.)
Granted
Application number
JP128380A
Other languages
Japanese (ja)
Other versions
JPH0159004B2 (en
Inventor
Ryuichi Kaji
Norio Arashi
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.)
Hitachi Ltd
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
Hitachi 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 Babcock Hitachi KK, Hitachi Ltd filed Critical Babcock Hitachi KK
Priority to JP128380A priority Critical patent/JPS56100621A/en
Publication of JPS56100621A publication Critical patent/JPS56100621A/en
Publication of JPH0159004B2 publication Critical patent/JPH0159004B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To provide the desulfurization performance which is stable against the change in the pH of an absorbing liquid slurry by blowing air into the absorbing liquid having lowered pH by absorbing gaseous SO2 in an absorption column, thereby oxidizing sulfurous acid radicals to sulfuric acid radicals.
CONSTITUTION: The limestone slurry absorbing liquid cooled in a cooling column is supplied into an absorption column 2. In the column 2, it is allowed to make gas- liquid contact between the absorbing liquid and exhaust gases, whereby the sulfurous acid gas in the gases is converted into calcium sulfite. The absorbing liquid having lowered pH to 4W5 as the result of absorption of SO2 gas is mixed with air by using an ejector 6 or the like, whereby calcium sulfite is oxidized to calcium sulfate. Alternatively, it is also possible to carry out oxidation by providing a perforated plate 5 to the upper part of a circulating tank 4, attenuating the mixed flow owing to the stirrer 7 in the tank 4, once storing the absorbing liquid just after emitting from the column 2 in the upper part of the tank 4 and mixing air into this absorbing liquid with the ejector 6 or the like.
COPYRIGHT: (C)1981,JPO&Japio
JP128380A 1980-01-11 1980-01-11 Improvement of performance of stack gas desulfurization apparatus Granted JPS56100621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP128380A JPS56100621A (en) 1980-01-11 1980-01-11 Improvement of performance of stack gas desulfurization apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP128380A JPS56100621A (en) 1980-01-11 1980-01-11 Improvement of performance of stack gas desulfurization apparatus

Publications (2)

Publication Number Publication Date
JPS56100621A true JPS56100621A (en) 1981-08-12
JPH0159004B2 JPH0159004B2 (en) 1989-12-14

Family

ID=11497119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP128380A Granted JPS56100621A (en) 1980-01-11 1980-01-11 Improvement of performance of stack gas desulfurization apparatus

Country Status (1)

Country Link
JP (1) JPS56100621A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139802A2 (en) * 1983-09-09 1985-05-08 Babcock-Hitachi Kabushiki Kaisha Flue gas desulfurization process
JPS6342720A (en) * 1986-08-07 1988-02-23 Mitsubishi Heavy Ind Ltd Wet flue gas desulfurization method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139802A2 (en) * 1983-09-09 1985-05-08 Babcock-Hitachi Kabushiki Kaisha Flue gas desulfurization process
JPS6342720A (en) * 1986-08-07 1988-02-23 Mitsubishi Heavy Ind Ltd Wet flue gas desulfurization method

Also Published As

Publication number Publication date
JPH0159004B2 (en) 1989-12-14

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