NL7317364A - Removing sulphur dioxide from waste gases - by converting into sulphite and oxidising to sulphate - Google Patents

Removing sulphur dioxide from waste gases - by converting into sulphite and oxidising to sulphate

Info

Publication number
NL7317364A
NL7317364A NL7317364A NL7317364A NL7317364A NL 7317364 A NL7317364 A NL 7317364A NL 7317364 A NL7317364 A NL 7317364A NL 7317364 A NL7317364 A NL 7317364A NL 7317364 A NL7317364 A NL 7317364A
Authority
NL
Netherlands
Prior art keywords
sulphate
sulphite
converting
sulphur dioxide
oxidising
Prior art date
Application number
NL7317364A
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 filed Critical
Priority to NL7317364A priority Critical patent/NL7317364A/en
Publication of NL7317364A publication Critical patent/NL7317364A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/464—Sulfates of Ca from gases containing sulfur oxides
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)

Abstract

Sulphur dioxide is removed from a CO2-free gas mixt., esp. waste industrial gases, by (a) contacting the gas mixt. with an aqs. soln. of an alkali metal hydroxide, (b) treating the formed liquid with an O-contng. gas contng. a greater amt. of O2 than the stoichiometric amt. for converting all the sulphite into sulphate, (c) treating the sulphate soln. with a Ca(OH)2 suspension at 40 degrees C., (d) sepg. the formed gypsum, and (e) contacting the resulting aqs. alkali metal hydroxide soln. with the gas mixt. Provides relatively rapdi SO2 removal and trouble-free operation.
NL7317364A 1973-12-19 1973-12-19 Removing sulphur dioxide from waste gases - by converting into sulphite and oxidising to sulphate NL7317364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7317364A NL7317364A (en) 1973-12-19 1973-12-19 Removing sulphur dioxide from waste gases - by converting into sulphite and oxidising to sulphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7317364A NL7317364A (en) 1973-12-19 1973-12-19 Removing sulphur dioxide from waste gases - by converting into sulphite and oxidising to sulphate

Publications (1)

Publication Number Publication Date
NL7317364A true NL7317364A (en) 1974-12-30

Family

ID=19820229

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7317364A NL7317364A (en) 1973-12-19 1973-12-19 Removing sulphur dioxide from waste gases - by converting into sulphite and oxidising to sulphate

Country Status (1)

Country Link
NL (1) NL7317364A (en)

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