GB1505281A - Process and apparatus for the purification of flue and other waste gas - Google Patents

Process and apparatus for the purification of flue and other waste gas

Info

Publication number
GB1505281A
GB1505281A GB34212/75A GB3421275A GB1505281A GB 1505281 A GB1505281 A GB 1505281A GB 34212/75 A GB34212/75 A GB 34212/75A GB 3421275 A GB3421275 A GB 3421275A GB 1505281 A GB1505281 A GB 1505281A
Authority
GB
United Kingdom
Prior art keywords
wash liquid
calcium
oxidation
acid
salts
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
GB34212/75A
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19742444781 external-priority patent/DE2444781A1/en
Priority claimed from DE19742447165 external-priority patent/DE2447165A1/en
Priority claimed from DE19752509788 external-priority patent/DE2509788A1/en
Priority claimed from DE19752511140 external-priority patent/DE2511140A1/en
Priority claimed from DE19752519489 external-priority patent/DE2519489A1/en
Priority claimed from DE19752519939 external-priority patent/DE2519939A1/en
Priority claimed from DE2532373A external-priority patent/DE2532373C3/en
Application filed by Individual filed Critical Individual
Publication of GB1505281A publication Critical patent/GB1505281A/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
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/464—Sulfates of Ca from gases containing sulfur oxides
    • 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
    • B01D53/34—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
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor

Abstract

1505281 Removing sulphur dioxide from waste gases H HOLTER 18 Aug 1975 [19 Sept 1974 3 Oct 1974 6 March 1975 14 March 1975 2 May 1975 5 May 1975 19 July 1975] 34212/75 Heading C1A Waste gases containing SO 2 are purified by bringing the gas into contact with a circulating aqueous wash liquid, the pH of the wash liquid before contact with the gas being adjusted to the basic range but not exceeding 12 such that the pH of the wash liquid after contact attains the weakly acid range but does not drop below 4À5, the wash liquid circulating from a gas washing means 3, 4 to a vessel 6 where salts and/or acids 7 which increase the degree of dissociation of Ca<SP>2+</SP> ions are added and intensive mixing of air 8 with the liquid is effected, then next to an oxidation vessel 9 wherein the CaSO 3 or Ca(HSO 3 ) 2 formed is oxidized to CaSO 4 , then from the oxidation vessel to a separator 14 wherein the wash liquid has a dwell time of at least 15 minutes and is then clarified, calcium carbonate and/or calcium oxide and/or calcium hydroxide being introduced 11 after the oxidation and before the solids separation to effect the required adjustment of the pH value of the wash liquid to the basic range not exceeding a pH value of 12, the clarified wash liquor then being returned 15 to the gas washing means. The additives increasing the degree of dissociation of calcium may be acids and/or salts of the halogen group, nitrates, phosphates, or organic acids and their salts, the anions of which form with calcium ions water-soluble compounds, which in the presence of sulphurous acid permit exchange in neutral or weakly acid medium with the acid residue of sulphurous acid and in an alkaline medium reform the water soluble calcium compounds. The additive may be formic acid or an ammonium salt (ammonium formate specified). An alkaline salt (FeCl 3 , Fe 2 (SO 4 ) 3 specified) may be added to the wash liquid during the oxidation step. The oxidation may be carried out in the presence of elemental iron optionally in the form of refined steel or copper alloy steel as catalyst. Reference has been directed by the Comptroller to Specification 1,445,228.
GB34212/75A 1974-09-19 1975-08-18 Process and apparatus for the purification of flue and other waste gas Expired GB1505281A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19742444781 DE2444781A1 (en) 1974-04-01 1974-09-19 Gas purification to remote sulphur dioxide - with calcium cpds in presence of sulphuric and other acids to prevent deposition of calcium carbonate
DE19742447165 DE2447165A1 (en) 1974-04-01 1974-10-03 Gas purification to remote sulphur dioxide - with calcium cpds in presence of sulphuric and other acids to prevent deposition of calcium carbonate
DE19752509788 DE2509788A1 (en) 1974-04-01 1975-03-06 Gas purification to remote sulphur dioxide - with calcium cpds in presence of sulphuric and other acids to prevent deposition of calcium carbonate
DE19752511140 DE2511140A1 (en) 1974-04-01 1975-03-14 Gas purification to remote sulphur dioxide - with calcium cpds in presence of sulphuric and other acids to prevent deposition of calcium carbonate
DE19752519489 DE2519489A1 (en) 1975-05-02 1975-05-02 Gas purification to remote sulphur dioxide - with calcium cpds in presence of sulphuric and other acids to prevent deposition of calcium carbonate
DE19752519939 DE2519939A1 (en) 1974-04-01 1975-05-05 Gas purification to remote sulphur dioxide - with calcium cpds in presence of sulphuric and other acids to prevent deposition of calcium carbonate
DE2532373A DE2532373C3 (en) 1975-07-19 1975-07-19 Method and device for cleaning flue gases and other exhaust gases containing sulfur dioxide

Publications (1)

Publication Number Publication Date
GB1505281A true GB1505281A (en) 1978-03-30

Family

ID=27561329

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34212/75A Expired GB1505281A (en) 1974-09-19 1975-08-18 Process and apparatus for the purification of flue and other waste gas

Country Status (10)

Country Link
JP (1) JPS5155778A (en)
AT (1) AT356635B (en)
BE (1) BE832940A (en)
BR (1) BR7505565A (en)
CH (1) CH617867A5 (en)
DK (1) DK419475A (en)
FR (1) FR2285170A1 (en)
GB (1) GB1505281A (en)
NL (1) NL7510250A (en)
SE (1) SE423866B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122981A (en) * 1982-06-23 1984-01-25 Monsanto Co Buffered flue gas scrubbing
EP1106237A1 (en) * 1999-05-17 2001-06-13 Mitsubishi Heavy Industries, Ltd. Method for flue gas desulfurization and flue gas desulfurization system
CN112588050A (en) * 2020-11-25 2021-04-02 江西捷美软包装有限公司 Waste gas treatment device for high-temperature steaming bag curing chamber

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2632239A1 (en) * 1976-07-17 1978-01-26 Heinz Hoelter Purificn. of waste gas partic. from power stations - with liquor contg. carboxylic acid or salt later neutralised with alkaline earth carbonate
JPS5542034B1 (en) * 1976-11-17 1980-10-28
FR2374942A1 (en) * 1976-12-21 1978-07-21 Kobe Steel Ltd Sulphur dioxide removal from gases - by absorbing in soln. contg. a metal halide and hydroxide
DE3227187C1 (en) * 1982-07-21 1988-12-01 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen Wash tower for a plant for the desulphurization of flue gas
DE3641170A1 (en) * 1986-12-02 1988-06-09 Hoelter Heinz Simultaneous SO2/NOx wet scrubbing process with scrubbing water treatment for purifying combustion exhaust gases
FR2729581A1 (en) * 1995-01-24 1996-07-26 Lab Sa IMPROVEMENTS IN METHODS OF DESULFURING SMOKE
CN111530248A (en) * 2020-05-08 2020-08-14 黄龙标 A chemoautotrophic biological washing device for exhaust-gas treatment
JP7380738B2 (en) * 2022-03-30 2023-11-15 栗田工業株式会社 Cleaning method for exhaust gas treatment equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137630B2 (en) * 1971-11-30 1976-10-16
JPS5124465B2 (en) * 1972-05-04 1976-07-24
JPS512318B2 (en) * 1972-06-27 1976-01-24

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122981A (en) * 1982-06-23 1984-01-25 Monsanto Co Buffered flue gas scrubbing
EP1106237A1 (en) * 1999-05-17 2001-06-13 Mitsubishi Heavy Industries, Ltd. Method for flue gas desulfurization and flue gas desulfurization system
EP1134195A3 (en) * 1999-05-17 2002-08-28 Mitsubishi Heavy Industries, Ltd. Flue gas desulphurisation
EP1106237A4 (en) * 1999-05-17 2002-08-28 Mitsubishi Heavy Ind Ltd Method for flue gas desulfurization and flue gas desulfurization system
CN112588050A (en) * 2020-11-25 2021-04-02 江西捷美软包装有限公司 Waste gas treatment device for high-temperature steaming bag curing chamber

Also Published As

Publication number Publication date
ATA639475A (en) 1979-10-15
FR2285170A1 (en) 1976-04-16
CH617867A5 (en) 1980-06-30
BR7505565A (en) 1976-08-03
JPS54874B2 (en) 1979-01-17
AT356635B (en) 1980-05-12
DK419475A (en) 1976-03-20
JPS5155778A (en) 1976-05-17
BE832940A (en) 1975-12-31
SE423866B (en) 1982-06-14
SE7509770L (en) 1976-03-22
FR2285170B1 (en) 1982-04-09
NL7510250A (en) 1976-03-23
AU8443275A (en) 1977-03-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee