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1. (WO2019030437) METHOD AND FACILITY FOR PURIFYING A FEED GAS STREAM COMPRISING AT LEAST 90% CO2
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/030437 International Application No.: PCT/FR2018/051788
Publication Date: 14.02.2019 International Filing Date: 13.07.2018
IPC:
B01D 53/00 (2006.01) ,B01D 53/86 (2006.01) ,C01B 32/50 (2017.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
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 or aerosols
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
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 or aerosols
34
Chemical or biological purification of waste gases
74
General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86
Catalytic processes
[IPC code unknown for C01B 32/50]
Applicants:
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE [FR/FR]; 75, Quai d'Orsay 75007 Paris, FR
Inventors:
RODRIGUES, Guillaume; FR
ARPENTINIER, Philippe; FR
FRANCO, Aurélien; FR
JABES, Rémi; FR
LAGOUTTE, François; FR
PERRU, Laurent; FR
WERLEN, Etienne; FR
Agent:
LAIGNEAU, Amandine; FR
Priority Data:
175763910.08.2017FR
Title (EN) METHOD AND FACILITY FOR PURIFYING A FEED GAS STREAM COMPRISING AT LEAST 90% CO2
(FR) Procédé et Installation de purification d'un flux gazeux d'alimentation comprenant au moins 90% de CO2
Abstract:
(EN) A method for purifying a feed gas stream comprising at least 90% CO2 on a dry basis, at least 20% relative humidity and at least one impurity chosen from the chlorinated, nitrated, fluorinated or sulfur compounds, comprising the following successive steps: a) a step of subjecting the feed gas stream to a catalytic oxidation in such a way as to produce a gas stream comprising at least one acid impurity chosen from among HCl, NOx, SOx or hydrofluoric acid; b) a step of maintaining the temperature of the gas stream coming from step a) above the highest value between the dew point of water and the dew point of the acid or acids contained in the gas downstream of the catalytic process; c) a step of removing at least a part of the acid impurities by placing the gas stream coming from step b) in contact with at least one corrosion-resistant heat exchanger in such a way as to condense the acid compounds while regulating the temperature of the gas stream exiting below the dew point of water; and d) a step of separating the acid condensates of the gas stream coming from step c) by means of a corrosion-resistant separator in such a way as to produce a CO2 enriched gas stream.
(FR) Procédé de purification d'un flux gazeux d'alimentation comprenant au moins 90% de CO2 en base sèche, au moins 20% d'humidité relative et au moins une impureté choisie les composés chlorés, soufrés, nitrés ou fluorés comprenant les étapes successives suivantes: a) une étape de soumission du flux gazeux d'alimentation à une oxydation catalytique de manière à produire un flux gazeux comprenant au moins une impureté acide choisie parmi HCl, NOx, SOx ou acide fluorhydrique; b) une étape de maintien de la température du flux gazeux issu de l'étape a) au dessus de la plus grande valeur entre le point de rosée de l'eau et le point de rosée du/des acide(s) contenus dans le gaz en aval du procédé catalytique; c) une étape d'élimination d'au moins une partie des impuretés acides en mettant en contact le flux gazeux issu de l'étape b) en contact avec au moins un échangeur de chaleur résistant à la corrosion de manière à condenser les composés acides tout en régulant la température du flux gazeux sortant sous le point de rosée de l'eau; et d) une étape de séparation des condensats acides du flux gazeux issu de l'étape c) au moyen d'un séparateur résistant à la corrosion de manière à produire un flux gazeux enrichi en CO2.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)