GB1294460A - Air pollution control system with chemical recovery - Google Patents

Air pollution control system with chemical recovery

Info

Publication number
GB1294460A
GB1294460A GB6312769A GB6312769A GB1294460A GB 1294460 A GB1294460 A GB 1294460A GB 6312769 A GB6312769 A GB 6312769A GB 6312769 A GB6312769 A GB 6312769A GB 1294460 A GB1294460 A GB 1294460A
Authority
GB
United Kingdom
Prior art keywords
mgso
calcium salt
control system
salt
air pollution
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
GB6312769A
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.)
Combustion Engineering Inc
Original Assignee
Combustion Engineering Inc
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 Combustion Engineering Inc filed Critical Combustion Engineering Inc
Publication of GB1294460A publication Critical patent/GB1294460A/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
    • B01D53/34—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
    • 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
    • B01D53/508—Sulfur oxides by treating the gases with solids
    • 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
    • C01F5/14—Magnesium hydroxide
    • C01F5/22—Magnesium hydroxide from magnesium compounds with alkali hydroxides or alkaline- earth oxides or hydroxides

Landscapes

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

Abstract

1294460 Mg(OH), recovery COMBUSTION ENG Inc 29 Dec 1969 [31 Dec 1968] 63127/69 Heading C1A Mg(OH) 2 is recovered from an MgSO 4 containing sludge produced (see Specification 1,178,109) by reaction of combustion gases containing SO 2 with MgO, followed by scrubbing by introducing a soluble calcium salt to precipitate CaSO 4 , separating at least part of the magnesium salt solution produced and reacting it with Ca(OH) 2 to precipitate Mg(OH) 2 and form a solution of soluble calcium salt which may be used in the first stage of the process. The preferred calcium salt is CaCl 2 . Any MgSO 3 in the initial sludge may be oxidized to MgSO 4 before carrying out the extraction. The resulting Mg(OH) 2 may be calcined to MgO. Addition of the Ca salt and/or the oxidizing agent may take place in the scrubber. Reference has been directed by the Comptroller to Specification 1,178,109.
GB6312769A 1968-12-31 1969-12-29 Air pollution control system with chemical recovery Expired GB1294460A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78828368A 1968-12-31 1968-12-31

Publications (1)

Publication Number Publication Date
GB1294460A true GB1294460A (en) 1972-10-25

Family

ID=25144011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6312769A Expired GB1294460A (en) 1968-12-31 1969-12-29 Air pollution control system with chemical recovery

Country Status (6)

Country Link
BE (1) BE743869A (en)
CH (1) CH527615A (en)
ES (1) ES375075A1 (en)
FR (1) FR2027441A1 (en)
GB (1) GB1294460A (en)
NL (1) NL6919657A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101172627B (en) * 2007-10-11 2011-02-02 河北科技大学 Method of producing magnesium hydroxide
CN109368897A (en) * 2018-10-31 2019-02-22 华北电力大学（保定） A kind of milk of lime process recycles the system and application method of calcium ions and magnesium ions in desulfurization wastewater

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2323508A1 (en) * 1973-05-10 1974-11-28 Heinz Hoelter PROCESS FOR SCRUBBISHING SO2, HC1, FLUORINE, DUST AND SIMILAR SMOKE GAS COMPANIES
AT388882B (en) * 1987-07-29 1989-09-11 Andritz Ag Maschf METHOD FOR THE PURIFICATION OF EXHAUST GASES FROM COMBUSTION PLANTS CONTAINING SALTIC ACID AND SULFUR DIOXIDE, IN PARTICULAR MUSEUM COMBUSTION PLANTS
CN115504491A (en) * 2021-06-23 2022-12-23 河南省德耀节能科技股份有限公司 Method and system for recovering magnesium compound from calcium carbide furnace purification ash incineration material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101172627B (en) * 2007-10-11 2011-02-02 河北科技大学 Method of producing magnesium hydroxide
CN109368897A (en) * 2018-10-31 2019-02-22 华北电力大学（保定） A kind of milk of lime process recycles the system and application method of calcium ions and magnesium ions in desulfurization wastewater

Also Published As

Publication number Publication date
CH527615A (en) 1972-09-15
ES375075A1 (en) 1972-04-01
BE743869A (en) 1970-05-28
NL6919657A (en) 1970-07-02
DE1951554A1 (en) 1971-03-04
FR2027441A1 (en) 1970-09-25
DE1951554B2 (en) 1972-08-24

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Legal Events

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