JPS567632A - Exhaust gas desulfurizing method and its apparatus - Google Patents

Exhaust gas desulfurizing method and its apparatus

Info

Publication number
JPS567632A
JPS567632A JP8240479A JP8240479A JPS567632A JP S567632 A JPS567632 A JP S567632A JP 8240479 A JP8240479 A JP 8240479A JP 8240479 A JP8240479 A JP 8240479A JP S567632 A JPS567632 A JP S567632A
Authority
JP
Japan
Prior art keywords
glauber
salt
produced
gas
gypsum
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
JP8240479A
Other languages
Japanese (ja)
Inventor
Kazumi Hamabe
Masu Tsugeno
Jun Fukui
Makoto Yanai
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries 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 Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP8240479A priority Critical patent/JPS567632A/en
Publication of JPS567632A publication Critical patent/JPS567632A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To convert by-produced Glauber's salt to caustic soda and sulfuric acid and prevent the loss of alkaline components by recovering alkaline components from the Glauber's salt produced in the gas to be treated by the use of a Glauber's salt electrolytic device in an absorption process in a sulfurous acid-gypsum process.
CONSTITUTION: Calcium carbonate is added to the acid sodium sulfite produced with the absorption of sulfur dioxide to regenerate sodium sulfite, oxidize the calcium sulfite being the product of double decomposition reaction, and the gypsum is separated as a by-product. Further, alkaline components are recovered from the Glauber's salt produced in the gas to be treated in an absorption process, by using a Glauber's salt electrolyzing device F. The filtrate after solid-liquid separation produced from the process for oxidation to gypsum is uses as the Glauber's salt solution to be supplied into the Glauber's salt electrolytic device. For example, exhaust gas 21 is led into an absorption tower A, where it is scrubbed by an absorbing solution 27 mainly composed of sodium sulfite and is removed of sulfur dioxide. This gas is exhausted as pollution-free exhaust gas 22.
COPYRIGHT: (C)1981,JPO&Japio
JP8240479A 1979-06-28 1979-06-28 Exhaust gas desulfurizing method and its apparatus Pending JPS567632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8240479A JPS567632A (en) 1979-06-28 1979-06-28 Exhaust gas desulfurizing method and its apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8240479A JPS567632A (en) 1979-06-28 1979-06-28 Exhaust gas desulfurizing method and its apparatus

Publications (1)

Publication Number Publication Date
JPS567632A true JPS567632A (en) 1981-01-26

Family

ID=13773650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8240479A Pending JPS567632A (en) 1979-06-28 1979-06-28 Exhaust gas desulfurizing method and its apparatus

Country Status (1)

Country Link
JP (1) JPS567632A (en)

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