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GB1328403A - System of absorbing so2 gas in effluent gas stream - Google Patents

System of absorbing so2 gas in effluent gas stream

Info

Publication number
GB1328403A
GB1328403A GB4954970A GB4954970A GB1328403A GB 1328403 A GB1328403 A GB 1328403A GB 4954970 A GB4954970 A GB 4954970A GB 4954970 A GB4954970 A GB 4954970A GB 1328403 A GB1328403 A GB 1328403A
Authority
GB
United Kingdom
Prior art keywords
crystals
gases
mgso
mgo
absorption
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
GB4954970A
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 GB1328403A publication Critical patent/GB1328403A/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)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Treating Waste Gases (AREA)

Abstract

1328403 Removing SO 2 from gases BABCOCK & WILCOX CO 19 Oct 1970 [15 Dec 1969] 49549/70 Heading C1A SO 2 is removed from gases by scrubbing with a solution containing Mg, precipitating hydrated MgSO 3 crystals from the solution, and thermally decomposing the crystals into MgO and SO 2 . The gases may initially be passed through an electrostatic precipitator or wet scrubber to remove solids, and cooled by spraying with water. Absorption of SO 2 may be effected at 150-160‹ F. Precipitation is effected by adding MgO or Mg(OH) 2 to produce crystals of size 75-300 Á., the solution being recycled to the absorption stage. The crystals may be preheated to 200‹ F. to dehydrate MgSO 3 .6H 2 O to MgSO 3 .3H 2 O, and then calcined at 1400-1800‹ F in a fluidized bed. Water vapour may be condensed from the gases and used to wash the crystals. The MgO may be slurrried with water and recycled, part to the absorption step and part to the precipitation step.
GB4954970A 1969-12-15 1970-10-19 System of absorbing so2 gas in effluent gas stream Expired GB1328403A (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
GB1328403A true GB1328403A (en) 1973-08-30

Family

ID=25386215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4954970A Expired GB1328403A (en) 1969-12-15 1970-10-19 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406446A1 (en) * 1989-01-10 1991-01-09 Nichimen Corporation Desulfurization of exhaust gas
EP0775515A1 (en) * 1995-10-20 1997-05-28 Dravo Lime Company Sulphur dioxide scrubbing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514211U (en) * 1978-07-15 1980-01-29
AT393971B (en) * 1990-06-01 1992-01-10 Waagner Biro Ag Process for producing SO2-rich gases and apparatus for carrying out the process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406446A1 (en) * 1989-01-10 1991-01-09 Nichimen Corporation Desulfurization of exhaust gas
EP0406446A4 (en) * 1989-01-10 1991-07-24 Nichimen Corporation Desulfurization of exhaust gas
EP0775515A1 (en) * 1995-10-20 1997-05-28 Dravo Lime Company Sulphur dioxide scrubbing

Also Published As

Publication number Publication date
DE2056117A1 (en) 1971-06-24
ES384761A1 (en) 1973-09-01
FR2066826A5 (en) 1971-08-06
JPS4929433B1 (en) 1974-08-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee