GB1296957A - - Google Patents

Info

Publication number
GB1296957A
GB1296957A GB1803371A GB1296957DA GB1296957A GB 1296957 A GB1296957 A GB 1296957A GB 1803371 A GB1803371 A GB 1803371A GB 1296957D A GB1296957D A GB 1296957DA GB 1296957 A GB1296957 A GB 1296957A
Authority
GB
United Kingdom
Prior art keywords
mgso
gas
mgo
scrubbing
recycling
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
GB1803371A
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
Publication of GB1296957A publication Critical patent/GB1296957A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/06—Preparation of sulfur; Purification from non-gaseous sulfides or materials containing such sulfides, e.g. ores
    • 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

Abstract

1296957 Removing SO 2 from gases CHEMICAL CONSTRUCTION CORP 28 May 1971 18033/71 Heading C1A SO 2 is removed from waste gas by scrubbing the gas with aqueous Na 2 SO 3 , adding MgO and or Mg(OH) 2 to at least a portion of the resulting NaHSO 3 solution to precipitate MgSO 3 , recycling the regenerated Na 2 SO 3 solution together with any untreated portion, reacting the MgSO 3 with carbon to form MgO and sulphur vapour, and recycling the MgO. The waste gas may be flue gas or H 2 SO 4 off-gas. If it contains SO 3 , MgSO 4 is also formed. Entrained fly ash may be separated after scrubbing. The MgSO 3 may be heated with coal or coke at 400-900‹ C. The sulphur vapour may be condensed or scrubbed with solvent.
GB1803371A 1971-05-28 1971-05-28 Expired GB1296957A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1803371 1971-05-28
DE2127190A DE2127190C3 (en) 1971-05-28 1971-06-01 Process for removing sulfur dioxide from exhaust gases

Publications (1)

Publication Number Publication Date
GB1296957A true GB1296957A (en) 1972-11-22

Family

ID=25761211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1803371A Expired GB1296957A (en) 1971-05-28 1971-05-28

Country Status (2)

Country Link
DE (1) DE2127190C3 (en)
GB (1) GB1296957A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5846286A (en) * 1997-03-07 1998-12-08 Dravo Lime Company Method for removing NOx from a gas stream while producing an alkaline earth nitrate fertilizer composition

Also Published As

Publication number Publication date
DE2127190C3 (en) 1974-04-25
DE2127190A1 (en) 1972-12-14
DE2127190B2 (en) 1973-08-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees