ES384761A1 - System of absorbing so2 gas in effluent gas stream - Google Patents

System of absorbing so2 gas in effluent gas stream

Info

Publication number
ES384761A1
ES384761A1 ES384761A ES384761A ES384761A1 ES 384761 A1 ES384761 A1 ES 384761A1 ES 384761 A ES384761 A ES 384761A ES 384761 A ES384761 A ES 384761A ES 384761 A1 ES384761 A1 ES 384761A1
Authority
ES
Spain
Prior art keywords
magnesium
solution
gases
gas
crystals
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.)
Expired
Application number
ES384761A
Other languages
Spanish (es)
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.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
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 and Wilcox Co filed Critical Babcock and Wilcox Co
Publication of ES384761A1 publication Critical patent/ES384761A1/en
Expired legal-status Critical Current

Links

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
    • B01D53/14—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 by absorption
    • B01D53/1456—Removing acid components
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1418—Recovery of products
    • 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
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/60—Isolation of sulfur dioxide from gases
    • 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
    • C01F5/00—Compounds of magnesium
    • C01F5/42—Magnesium sulfites

Landscapes

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

Abstract

A SO2 recovery procedure for separating SO2 from gases, comprising: A. Separation of entrained solids from said gases, B. Cooling of said gases to an optimal temperature, C. Absorption of gaseous SO2 from said cooled gases in a solution containing magnesium to produce magnesium sulfite and magnesium bisulfite, D. Precipitation of hydrated magnesium sulphite crystals from said solution, exceeding the saturation limit of said solution, E. Separation of said crystals from said solution and recycling of the magnesium-containing solution to said absorption stage of gaseous SO2, F. Thermal decomposition of said magnesium sulfite crystals to produce reactive particles of magnesium oxide and a gas containing sulfur dioxide, separating the magnesium oxide particles from the gas containing sulfur dioxide, G. Conversion of the gaseous product containing SO2 into a preferred form, H. and return of at least part of the MgO particles to stage C for the preparation of the solution used in the SO2 gas absorption stage. (Machine-translation by Google Translate, not legally binding)
ES384761A 1969-12-15 1970-10-21 System of absorbing so2 gas in effluent gas stream Expired ES384761A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88513169A 1969-12-15 1969-12-15

Publications (1)

Publication Number Publication Date
ES384761A1 true ES384761A1 (en) 1973-09-01

Family

ID=25386215

Family Applications (1)

Application Number Title Priority Date Filing Date
ES384761A Expired ES384761A1 (en) 1969-12-15 1970-10-21 System of absorbing so2 gas in effluent gas stream

Country Status (5)

Country Link
JP (1) JPS4929433B1 (en)
DE (1) DE2056117A1 (en)
ES (1) ES384761A1 (en)
FR (1) FR2066826A5 (en)
GB (1) GB1328403A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514211U (en) * 1978-07-15 1980-01-29
JPH03143527A (en) * 1989-01-10 1991-06-19 Kenichi Nakagawa Method for desulfurizing waste gas
AT393971B (en) * 1990-06-01 1992-01-10 Waagner Biro Ag Process for producing SO2-rich gases and apparatus for carrying out the process
JPH09122440A (en) * 1995-10-20 1997-05-13 Dravo Lime Co Method for scrubbing sulfur dioxide being accompanied with formation of pure product of magnesium sulfite

Also Published As

Publication number Publication date
GB1328403A (en) 1973-08-30
DE2056117A1 (en) 1971-06-24
JPS4929433B1 (en) 1974-08-03
FR2066826A5 (en) 1971-08-06

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