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1. WO1996039595 - EFFLUENT GAS TREATMENT

Publication Number WO/1996/039595
Publication Date 12.12.1996
International Application No. PCT/GB1996/001261
International Filing Date 28.05.1996
Chapter 2 Demand Filed 07.12.1996
IPC
B01D 53/68 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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 or aerosols
34Chemical or biological purification of waste gases
46Removing components of defined structure
68Halogens or halogen compounds
B01D 53/86 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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 or aerosols
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
C07C 51/265 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides, or anhydrides
16by oxidation
21with molecular oxygen
255of compounds containing six-membered aromatic rings without ring-splitting
265having alkyl side chains which are oxidised to carboxyl groups
F01K 25/14 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
25Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
08using special vapours
14using industrial or other waste gases
F23G 7/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
GCREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION
7Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals
06of waste gases or noxious gases, e.g. exhaust gases
F23J 15/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
15Arrangements of devices for treating smoke or fumes
02of purifiers, e.g. for removing noxious material
04using washing fluids
CPC
B01D 2251/304
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
30Alkali metal compounds
304of sodium
B01D 2257/2022
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2257Components to be removed
20Halogens or halogen compounds
202Single element halogens
2022Bromine
B01D 2257/2042
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2257Components to be removed
20Halogens or halogen compounds
204Inorganic halogen compounds
2042Hydrobromic acid
B01D 53/68
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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,
34Chemical or biological purification of waste gases
46Removing components of defined structure
68Halogens or halogen compounds
B01D 53/8662
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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,
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
8659Removing halogens or halogen compounds
8662Organic halogen compounds
C07C 51/265
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
16by oxidation
21with molecular oxygen
255of compounds containing six-membered aromatic rings without ring-splitting
265having alkyl side chains which are oxidised to carboxyl groups
Applicants
  • IMPERIAL CHEMICAL INDUSTRIES PLC [GB]/[GB] (AllExceptUS)
  • TURNER, John, Arthur [GB]/[GB] (UsOnly)
  • JEFFERY, Ian, Charles [GB]/[GB] (UsOnly)
Inventors
  • TURNER, John, Arthur
  • JEFFERY, Ian, Charles
Agents
  • COLLINGWOOD, Anthony, Robert
Priority Data
9511275.105.06.1995GB
9601493.125.01.1996GB
9602050.801.02.1996GB
9602458.307.02.1996GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EFFLUENT GAS TREATMENT
(FR) TRAITEMENT DE GAZ D'EFFLUENT
Abstract
(EN)
An effluent gas (10) derived from the production (R) of an aromatic dicarboxylic acid such as terephthalic acid is subjected to catalytic combustion (18) to effect complete conversion of any methyl bromide content to HBr and/or Br2 and the resulting gas stream is passed to an energy conversion device such as a gas turbine (24) under controlled conditions of pressure and temperature whereby condensation of HBr and/or Br2 is substantially prevented thereby allowing the energy conversion device to be fabricated from relatively inexpensive materials.
(FR)
Un gaz d'effluent (10) issu de la production (R) d'un acide dicarboxylique aromatique tel que l'acide téréphtalique est soumis à une combustion catalytique (18) en vue d'obtenir une conversion complète de n'importe quelle teneur en bromure de méthyle en Hbr et/ou Br2. Le courant gazeux obtenu passe ensuite dans un dispositif de conversion de l'énergie tel qu'une turbine à gaz (24), dans des conditions régulées de pression et de température, ce qui évite pratiquement la condensation de Hbr et/ou Br2, le dispositif de conversion de l'énergie pouvant être ainsi fabriqué dans des matériaux relativement bon marché.
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