JPS5670821A - Method of treating waste containing cao - Google Patents

Method of treating waste containing cao

Info

Publication number
JPS5670821A
JPS5670821A JP14675279A JP14675279A JPS5670821A JP S5670821 A JPS5670821 A JP S5670821A JP 14675279 A JP14675279 A JP 14675279A JP 14675279 A JP14675279 A JP 14675279A JP S5670821 A JPS5670821 A JP S5670821A
Authority
JP
Japan
Prior art keywords
cao
convert
mgo
waste
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
JP14675279A
Other languages
Japanese (ja)
Inventor
Minoru Hashiguchi
Yuichi Fujioka
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 Heavy Industries Ltd
Original Assignee
Mitsubishi 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP14675279A priority Critical patent/JPS5670821A/en
Publication of JPS5670821A publication Critical patent/JPS5670821A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/20—Waste processing or separation

Landscapes

  • Treating Waste Gases (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

PURPOSE: To convert CaO to CaCO3 which is harmless against seawater, by bringing CO2 gas into contact with a solid waste containing unreacted CaO produced in desulfurization of SOx-containing waste gas using CaO.
CONSTITUTION: Waste combustion gas containing SOx is desulfurized by reacting with CaO or CaO.MgO to convert SOx into CaSO4. In this instance, desulfurizer, i.e., CaO or CaO.MgO is used in 2W10 times the theoretical amount so as to increase the desulfurizing ratio. As a result, the unreacted CaO or CaO.MgO remains in the desulfurized products. If it is disposed of as it is near the seashore, CaO is converted into Ca(OH)2 by rainwater, which flows in the sea, changing pH of the seawater and whitening it, and results in an environmental pollution. This harmful effect can be prevented by contacting the CaO-containing waste with CO2-containing high-temperature waste gas, to convert CaO into CaCO3.
COPYRIGHT: (C)1981,JPO&Japio
JP14675279A 1979-11-13 1979-11-13 Method of treating waste containing cao Pending JPS5670821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14675279A JPS5670821A (en) 1979-11-13 1979-11-13 Method of treating waste containing cao

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14675279A JPS5670821A (en) 1979-11-13 1979-11-13 Method of treating waste containing cao

Publications (1)

Publication Number Publication Date
JPS5670821A true JPS5670821A (en) 1981-06-13

Family

ID=15414778

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14675279A Pending JPS5670821A (en) 1979-11-13 1979-11-13 Method of treating waste containing cao

Country Status (1)

Country Link
JP (1) JPS5670821A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375653A2 (en) * 1988-12-23 1990-06-27 Perlmooser Zementwerke Aktiengesellschaft Process for the treatment of waste

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375653A2 (en) * 1988-12-23 1990-06-27 Perlmooser Zementwerke Aktiengesellschaft Process for the treatment of waste
EP0375653A3 (en) * 1988-12-23 1991-03-20 Perlmooser Zementwerke Aktiengesellschaft Process for the treatment of waste

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