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1. (WO2019067784) PROCESS AND APPARATUS FOR ALKYL HALIDE FUMIGANT RECOVERY AND CONVERSION
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Pub. No.: WO/2019/067784 International Application No.: PCT/US2018/053219
Publication Date: 04.04.2019 International Filing Date: 27.09.2018
IPC:
B01D 53/70 (2006.01) ,B01D 53/78 (2006.01)
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
34
Chemical or biological purification of waste gases
46
Removing components of defined structure
68
Halogens or halogen compounds
70
Organic halogen compounds
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
77
Liquid phase processes
78
with gas-liquid contact
Applicants:
THE TRUSTEES OF THE STEVENS INSTITUTE OF TECHNOLOGY [US/US]; Castle Point on Hudson Hoboken, NJ 07030, US
Inventors:
LAWAL, Adeniyi; US
ZHOU, Lin; US
Agent:
SELITTO, JR., Ralph W.; US
Priority Data:
62/563,97627.09.2017US
Title (EN) PROCESS AND APPARATUS FOR ALKYL HALIDE FUMIGANT RECOVERY AND CONVERSION
(FR) PROCESSUS ET APPAREIL DE RÉCUPÉRATION ET DE CONVERSION DE FUMIGANT D'HALOGÉNURE D'ALKYLE
Abstract:
(EN) Process and apparatus (10) are disclosed for capturing and converting an ozone-depleting alkyl halide fumigant from a fumigant/air mixed stream (14) by absorbing it into a metal hydroxide-alcohol buffer solution (26) in an absorber/scrubber (12) to produce a fumigant-free air stream (28). The captured alkyl halide in aqueous alcohol solution can actively react with the metal hydroxide in alcohol solution to produce a value-added product, such as a precipitate metal halide, and another alcohol that further enhances absorption. The absorbing solution is well-mixed with make-up alcohol and alkali streams to maintain the concentration of the metal hydroxide in the desired buffer solution range. The solid precipitate metal halide (52) is separated from the liquid stream, and the metal hydroxide-containing mixed alcohol stream (26) is recycled to the absorber/scrubber (12).
(FR) L'invention concerne un processus et un appareil (10) pour capturer et convertir un fumigant d'halogénure d'alkyle appauvri en ozone à partir d'un flux mélangé de fumigant/air (14) en l'absorbant dans une solution tampon d'hydroxyde métallique-alcool (26) dans un absorbeur/laveur (12) pour produire un flux d'air exempt de fumigant (28). L'halogénure d'alkyle capturé dans une solution alcoolique aqueuse peut réagir activement avec l'hydroxyde métallique dans une solution alcoolique pour produire un produit à valeur ajoutée, tel qu'un halogénure de métal précipité, et un autre alcool qui améliore en outre l'absorption. La solution absorbante est bien mélangée avec de l'alcool d'appoint et des flux alcalins pour maintenir la concentration de l'hydroxyde métallique dans la plage de solution tampon souhaitée. L'halogénure de métal précipité solide (52) est séparé du flux liquide, et le flux d'alcool mélangé contenant de l'hydroxyde métallique (26) est recyclé vers l'absorbeur/laveur (12).
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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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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: English (EN)
Filing Language: English (EN)