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1. CA2763294 - APPARATUS AND METHOD FOR REMOVING MERCURY FROM A GAS

Office Canada
Application Number 2763294
Application Date
Publication Number 2763294
Publication Date 27.01.2011
Grant Number
Grant Date 03.04.2018
Publication Kind C
IPC
B01D 53/64
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
64Heavy metals or compounds thereof, e.g. mercury
B01D 53/14
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
14by absorption
CPC
B01D 53/64
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
64Heavy metals or compounds thereof, e.g. mercury
B01D 2251/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
B01D 2251/108
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
10Oxidants
108Halogens or halogen compounds
B01D 2251/304
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
30Alkali metal compounds
304of sodium
B01D 2251/606
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
60Inorganic bases or salts
606Carbonates
B01D 2257/602
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2257Components to be removed
60Heavy metals or heavy metal compounds
602Mercury or mercury compounds
Applicants DICKSON, GRAHAM C.
Priority Data 61/228,503 24.07.2009 US
Title
(EN) APPARATUS AND METHOD FOR REMOVING MERCURY FROM A GAS
(FR) APPAREIL ET PROCEDE D'ELIMINATION DU MERCURE D'UN GAZ
Abstract
(EN)


The present invention provides a method and apparatus
for removing mercury from gases such as those discharged from roasters
and other heat producing systems. In embodiments the method comprises
reacting the mercury with dissolved molecular chlorine, and may also
comprise reacting the mercury with mercuric chloride to yield mercurous
chloride. The mercurous chloride may be removed by precipitation.
There are also disclosed apparatuses for implementing the method.