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1. (WO2018158730) CARBON DIOXIDE BASED CHROMATOGRAPHY SYSTEMS INCLUDING MULTIPLE CARBON DIOXIDE PUMPS
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Pub. No.: WO/2018/158730 International Application No.: PCT/IB2018/051324
Publication Date: 07.09.2018 International Filing Date: 01.03.2018
IPC:
B01D 15/40 (2006.01) ,G01N 30/32 (2006.01) ,G01N 30/34 (2006.01) ,G01N 30/62 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
15
Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
08
Selective adsorption, e.g. chromatography
26
characterised by the separation mechanism
40
using supercritical fluid as mobile phase or eluent
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30
Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02
Column chromatography
26
Conditioning of the fluid carrier; Flow patterns
28
Control of physical parameters of the fluid carrier
32
of pressure or speed
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30
Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02
Column chromatography
26
Conditioning of the fluid carrier; Flow patterns
28
Control of physical parameters of the fluid carrier
34
of fluid composition, e.g. gradient
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30
Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02
Column chromatography
62
Detectors specially adapted therefor
Applicants:
WATERS TECHNOLOGIES CORPORATION [US/US]; 34 Maple Street Milford, MA 01757, US
Inventors:
FOGWILL, Michael O.; US
JARRELL, Joseph A.; US
MICHIENZI, Joseph D.; US
MCDONALD, Thomas S.; US
Agent:
MISLEY, Heath T.; US
Priority Data:
62/466,53703.03.2017US
Title (EN) CARBON DIOXIDE BASED CHROMATOGRAPHY SYSTEMS INCLUDING MULTIPLE CARBON DIOXIDE PUMPS
(FR) SYSTÈMES DE CHROMATOGRAPHIE À BASE DE DIOXYDE DE CARBONE COMPRENANT DE MULTIPLES POMPES À DIOXYDE DE CARBONE
Abstract:
(EN) The present disclosure relates to methodologies, systems and apparatus for controlling pressure in a CO2-based chromatography system. A first CO2 pump operates in constant flow mode and delivers CO2 to a chromatography column, and liquid modifier is introduced to the chromatography column according to a gradient. A second CO2 pump is disposed downstream of the column and operates in constant pressure mode to introduce CO2 into a flow stream at an output of the column. Liquid modifier is also introduced into the flow stream at the output of the column according to a reverse gradient compared to the gradient entering the chromatography column.
(FR) La présente invention concerne des méthodologies, des systèmes et un appareil pour réguler la pression dans un système de chromatographie à base de CO2. Une première pompe à CO2 fonctionne en mode d'écoulement constant et délivre du CO2 à une colonne de chromatographie, et un modificateur liquide est introduit dans la colonne de chromatographie selon un gradient. Une seconde pompe à CO2 est disposée en aval de la colonne et fonctionne en mode pression constante pour introduire du CO2 dans un flux d'écoulement au niveau d'une sortie de la colonne. Un modificateur liquide est également introduit dans le flux d'écoulement au niveau de la sortie de la colonne selon un gradient inverse par rapport au gradient entrant dans la colonne de chromatographie.
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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)