GB1503085A – Method for removing sulphur dioxide from an exhaust gas
– Google Patents
GB1503085A – Method for removing sulphur dioxide from an exhaust gas
– Google Patents
Method for removing sulphur dioxide from an exhaust gas
Info
Publication number
GB1503085A
GB1503085A
GB25981/76A
GB2598176A
GB1503085A
GB 1503085 A
GB1503085 A
GB 1503085A
GB 25981/76 A
GB25981/76 A
GB 25981/76A
GB 2598176 A
GB2598176 A
GB 2598176A
GB 1503085 A
GB1503085 A
GB 1503085A
Authority
GB
United Kingdom
Prior art keywords
solution
exhaust gas
sulphite
concentration
oxidized
Prior art date
1975-06-23
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
GB25981/76A
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.)
Kureha Corp
Original Assignee
Kureha Corp
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.)
1975-06-23
Filing date
1976-06-22
Publication date
1978-03-08
1976-06-22
Application filed by Kureha Corp
filed
Critical
Kureha Corp
1978-03-08
Publication of GB1503085A
publication
Critical
patent/GB1503085A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
RAHZWNYVWXNFOC-UHFFFAOYSA-N
Sulphur dioxide
Chemical compound
O=S=O
RAHZWNYVWXNFOC-UHFFFAOYSA-N
0.000
title
2
235000010269
sulphur dioxide
Nutrition
0.000
title
1
239000004291
sulphur dioxide
Substances
0.000
title
1
239000000243
solution
Substances
0.000
abstract
8
LSNNMFCWUKXFEE-UHFFFAOYSA-L
sulfite
Chemical compound
[O-]S([O-])=O
LSNNMFCWUKXFEE-UHFFFAOYSA-L
0.000
abstract
5
QGZKDVFQNNGYKY-UHFFFAOYSA-O
Ammonium
Chemical compound
[NH4+]
QGZKDVFQNNGYKY-UHFFFAOYSA-O
0.000
abstract
3
229910052783
alkali metal
Inorganic materials
0.000
abstract
3
150000001340
alkali metals
Chemical class
0.000
abstract
3
150000003839
salts
Chemical class
0.000
abstract
3
FYYHWMGAXLPEAU-UHFFFAOYSA-N
Magnesium
Chemical compound
[Mg]
FYYHWMGAXLPEAU-UHFFFAOYSA-N
0.000
abstract
2
230000002745
absorbent
Effects
0.000
abstract
2
239000002250
absorbent
Substances
0.000
abstract
2
229910052749
magnesium
Inorganic materials
0.000
abstract
2
239000011777
magnesium
Substances
0.000
abstract
2
QAOWNCQODCNURD-UHFFFAOYSA-L
Sulfate
Chemical compound
[O-]S([O-])(=O)=O
QAOWNCQODCNURD-UHFFFAOYSA-L
0.000
abstract
1
239000007864
aqueous solution
Substances
0.000
abstract
1
238000007664
blowing
Methods
0.000
abstract
1
239000007788
liquid
Substances
0.000
abstract
1
159000000003
magnesium salts
Chemical class
0.000
abstract
1
150000007524
organic acids
Chemical class
0.000
abstract
1
230000003647
oxidation
Effects
0.000
abstract
1
238000007254
oxidation reaction
Methods
0.000
abstract
1
238000004064
recycling
Methods
0.000
abstract
1
229910021653
sulphate ion
Inorganic materials
0.000
abstract
1
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
B01D53/34—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
Abstract
1503085 Removing SO 2 from exhaust gas KUREHA KAGAKU KOGYO KK 22 June 1976 [23 June 1975] 25981/76 Heading CIA In the removal of SO 2 from exhaust gas by (1) contacting the gas with an aqueous solution of an alkali metal, ammonium, or magnesium salt of an organic acid to form the corresponding sulphite; (2) blowing O 2 or O 2 -containing gas into at least part of the resultant solution to oxidize the sulphite to sulphate; (3) adding CaCO 3 or Ca(OH) 2 to produce CaSO 4 À2H 2 O and regenerate the alkali metal, ammonium or magnesium organic salt in the solution; (4) separating the from the solution; and (5) recycling the solution together with any solution from step (1) which was not subjected to oxidation in step (2) to the gascontact zone; the improvement comprising causing the absorbent solution to contain not less than 0À3 wt. per cent crystalline immediately prior to contact with the exhaust gas, and maintaining a concentration of alkali metal, ammonium or magnesium organic salt in the solution, immediately after contact, of not more than 2 wt. per cent. The concentration of may be controlled by adjusting the quantity of separated in step (4), and the required concentration of sulphite may be maintained by adjusting the amount of sulphite oxidized in step (2). When the exhaust gas contains Clions, their concentration may be minimized by concentrating a part of the circulating liquid sufficiently to cause Cl
GB25981/76A
1975-06-23
1976-06-22
Method for removing sulphur dioxide from an exhaust gas
Expired
GB1503085A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP50077224A
JPS51151697A
(en)
1975-06-23
1975-06-23
Method for removal of sulfur dioxide in exhaust gas
Publications (1)
Publication Number
Publication Date
GB1503085A
true
GB1503085A
(en)
1978-03-08
Family
ID=13627870
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB25981/76A
Expired
GB1503085A
(en)
1975-06-23
1976-06-22
Method for removing sulphur dioxide from an exhaust gas
Country Status (13)
Country
Link
US
(1)
US4092402A
(en)
JP
(1)
JPS51151697A
(en)
AT
(1)
AT365095B
(en)
CA
(1)
CA1091898A
(en)
CS
(1)
CS191978B2
(en)
DE
(1)
DE2627705C3
(en)
ES
(1)
ES449102A1
(en)
FR
(1)
FR2317220A1
(en)
GB
(1)
GB1503085A
(en)
HU
(1)
HU175253B
(en)
IT
(1)
IT1061412B
(en)
PL
(1)
PL112644B1
(en)
SE
(1)
SE7607130L
(en)
Families Citing this family (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS53103997A
(en)
*
1977-02-23
1978-09-09
Chiyoda Chem Eng & Constr Co Ltd
Recovery of gypsum by desulfurization of exhaust gas
GB1598167A
(en)
*
1977-06-06
1981-09-16
Kureha Chemical Ind Co Ltd
Method for removal of sulphur dioxide from sulphur dioxide containing gas
JPS5853565B2
(en)
*
1978-11-06
1983-11-30
呉羽化学工業株式会社
Desulfurization method
US4337231A
(en)
*
1979-08-07
1982-06-29
Kureha Kagaku Kogyo Kabushiki Kaisha
Removal of sulfur dioxide from exhaust gas
US4269806A
(en)
*
1979-08-07
1981-05-26
Kureha Kagaku Kogyo Kabushiki Kaisha
Scrubber for removal of sulfur dioxide from exhaust gas
JPS6090027A
(en)
*
1983-10-25
1985-05-21
Kureha Chem Ind Co Ltd
Waste gas desulfurization method
JPS60129121A
(en)
*
1983-12-13
1985-07-10
Kureha Chem Ind Co Ltd
Stack gas desulfurization process
CA1258961A
(en)
*
1984-09-17
1989-09-05
Yoshihiko Kudo
PROCESS FOR PRODUCING .alpha.-FORM GYPSUM HEMIHYDRATE
DE3538231A1
(en)
*
1985-10-24
1987-04-30
Mannesmann Ag
Process for reprocessing waste solutions
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2090142A
(en)
*
1933-12-28
1937-08-17
Ici Ltd
Wet purification of gases
US2090143A
(en)
*
1934-03-10
1937-08-17
Ici Ltd
Gas washing
JPS5638247B2
(en)
*
1973-02-10
1981-09-05
JPS49110574A
(en)
*
1973-02-24
1974-10-21
US3843789A
(en)
*
1973-02-26
1974-10-22
Air Prod & Chem
Removal of sulfur oxides from stack gas
1975
1975-06-23
JP
JP50077224A
patent/JPS51151697A/en
active
Pending
1976
1976-06-15
US
US05/696,285
patent/US4092402A/en
not_active
Expired – Lifetime
1976-06-18
HU
HU76KU504A
patent/HU175253B/en
unknown
1976-06-21
CA
CA255,292A
patent/CA1091898A/en
not_active
Expired
1976-06-21
DE
DE2627705A
patent/DE2627705C3/en
not_active
Expired
1976-06-21
CS
CS764069A
patent/CS191978B2/en
unknown
1976-06-22
GB
GB25981/76A
patent/GB1503085A/en
not_active
Expired
1976-06-22
AT
AT0454676A
patent/AT365095B/en
not_active
IP Right Cessation
1976-06-22
SE
SE7607130A
patent/SE7607130L/en
unknown
1976-06-22
ES
ES76449102A
patent/ES449102A1/en
not_active
Expired
1976-06-23
FR
FR7619155A
patent/FR2317220A1/en
active
Granted
1976-06-23
PL
PL1976190650A
patent/PL112644B1/en
unknown
1976-06-23
IT
IT24617/76A
patent/IT1061412B/en
active
Also Published As
Publication number
Publication date
CS191978B2
(en)
1979-07-31
CA1091898A
(en)
1980-12-23
IT1061412B
(en)
1983-02-28
DE2627705A1
(en)
1976-12-30
PL112644B1
(en)
1980-10-31
ES449102A1
(en)
1977-12-01
SE7607130L
(en)
1976-12-24
DE2627705C3
(en)
1978-10-05
DE2627705B2
(en)
1978-02-02
AT365095B
(en)
1981-12-10
JPS51151697A
(en)
1976-12-27
FR2317220B1
(en)
1978-09-01
US4092402A
(en)
1978-05-30
ATA454676A
(en)
1981-05-15
HU175253B
(en)
1980-06-28
FR2317220A1
(en)
1977-02-04
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Legal Events
Date
Code
Title
Description
1978-07-19
PS
Patent sealed [section 19, patents act 1949]
1985-02-20
PCNP
Patent ceased through non-payment of renewal fee
