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1. (WO1998051389) VAPOR-LIQUID CONTACT TRAY WITH TWO-STAGE DOWNCOMER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/051389 International Application No.: PCT/US1998/009669
Publication Date: 19.11.1998 International Filing Date: 12.05.1998
Chapter 2 Demand Filed: 26.10.1998
IPC:
B01D 3/16 (2006.01) ,B01D 3/20 (2006.01) ,B01D 3/22 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
3
Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
14
Fractional distillation
16
Fractionating columns in which vapour bubbles through liquid
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
3
Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
14
Fractional distillation
16
Fractionating columns in which vapour bubbles through liquid
18
with horizontal bubble plates
20
Bubble caps; Risers for vapour; Discharge pipes for liquid
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
3
Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
14
Fractional distillation
16
Fractionating columns in which vapour bubbles through liquid
22
with horizontal sieve plates or grids; Construction of sieve plates or grids
Applicants:
KOCH-GLITSCH, INC. [US/US]; 4111 East 37th Street North Wichita, KS 67220, US
Inventors:
YEOMAN, Neil; US
HSIEH, Chang-Li; US
Agent:
HURD, Michael, B. ; Shook, Hardy & Bacon L.L.P. One Kansas City Place 1200 Main Street Kansas City, MO 64105, US
Priority Data:
60/046,23112.05.1997US
Title (EN) VAPOR-LIQUID CONTACT TRAY WITH TWO-STAGE DOWNCOMER
(FR) BAC DE MISE EN CONTACT VAPEUR-LIQUIDE A CONDUIT DE DESCENTE A DEUX ETAGES
Abstract:
(EN) A vapor-liquid contact tray (16) is provided with an upstream downcomer (46) and a downstream downcomer (48) which form a two-stage downcomer. The discharge outlet of the upstream downcomer (46) feeds liquid into the downstream downcomer (48) to help seal the discharge outlet (58) of the downstream downcomer (48) against vapor entry at lower liquid flow rates and to allow positioning of the discharge outlet (58) above the height of the weir on the underlying tray (16). Because the upstream downcomer (46) does not discharge liquid directly onto the underlying tray deck (40), the area of the tray deck (40) underlying the upstream downcomer (46) can contain vapor flow apertures (68) to increase the active area and mass transfer efficiency of the tray (16).
(FR) L'invention concerne un bac (16) de mise en contact vapeur-liquide doté d'un conduit de descente d'amont (46) et d'un conduit de descente d'aval (48) qui forment un conduit de descente à deux étages. La sortie d'évacuation de la descente d'amont (46) envoie du liquide dans le conduit de descente d'aval (48) pour isoler de manière étanche la sortie d'évacuation (58) du conduit de descente d'aval (48) et empêcher l'entrée de vapeur à des débits de liquide inférieurs et pour permettre le positionnement de la sortie d'évacuation (58) au dessus du déversoir situé sur le bac inférieur (16). Etant donné que le conduit de descente d'amont (46) n'évacue par le liquide directement sur le sommet du bac inférieur (40), la zone du sommet (40) du bac se trouvant au-dessous du conduit de descente d'amont (46) peut contenir des ouvertures (68) pour l'écoulement de vapeur de sorte que la surface active et l'efficacité de transfert de masse du bac (16) soit accrue.
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
MXPA/a/1999/010285KR1020010012453EP0981398JP2001524877 CA2290091AU1998073824