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1. (WO2019050610) SYSTEM AND METHOD FOR RECOVERY OF NEON AND HELIUM FROM AN AIR SEPARATION UNIT
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Pub. No.: WO/2019/050610 International Application No.: PCT/US2018/039754
Publication Date: 14.03.2019 International Filing Date: 27.06.2018
IPC:
F25J 3/04 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
J
LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
3
Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification
02
by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
04
for air
Applicants:
PRAXAIR TECHNOLOGY, INC. [US/US]; 10 Riverview Drive Danbury, CT 06810, US
Inventors:
SHELAT, Maulik, R.; US
TUO, Hanfei; US
DEGENSTEIN, Nick, J.; US
DRAY, James, R.; US
Agent:
HAMPSCH, Robert, J.; US
BLACK, Donald, T.; US
SCHWARTZ, Lurie, A.; US
MANCINI, Ralph, J.; US
DALAL, Nilay; US
Priority Data:
15/695,32005.09.2017US
Title (EN) SYSTEM AND METHOD FOR RECOVERY OF NEON AND HELIUM FROM AN AIR SEPARATION UNIT
(FR) SYSTÈME ET PROCÉDÉ DE RÉCUPÉRATION DE NÉON ET D'HÉLIUM À PARTIR D'UNE UNITÉ DE DISTILLATION D'AIR
Abstract:
(EN) A system and method for neon recovery in a double column or triple column air separation unit is provided. The neon recovery system comprises a non-condensable stripping column configured to produce a liquid nitrogen-rich liquid column bottoms and a non-condensable gas containing overhead and one or more condensing units arranged to produce a crude neon vapor stream that contains greater than about 50% mole fraction of neon with the overall neon recovery exceeding 95%. In addition, there is minimal liquid nitrogen consumption and since much of the liquid nitrogen is recycled back to the lower pressure column of the air separation unit, there is minimal impact on the recovery of other products from the air separation unit.
(FR) L'invention concerne un système et un procédé de récupération de néon dans une unité de distillation d'air à double colonne ou triple colonne. Le système de récupération de néon comprend une colonne de stripage non condensable conçue pour produire un fond de colonne de liquide riche en azote liquide et un gaz non condensable contenant du distillat de tête et une ou plusieurs unités de condensation conçues pour produire un courant de vapeur de néon brut qui contient une proportion supérieure à environ 50 % de fraction molaire de néon, la récupération de néon globale dépassant 95 %. De plus, il y a une consommation minimale d'azote liquide, et étant donné que l'azote liquide est recyclé en retour vers la colonne de pression inférieure de l'unité de distillation d'air, il y a un impact minimal sur la récupération d'autres produits contenus dans l'unité de distillation d'air.
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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)