WO1996009872A1 - Liquid distributor for an evaporator - Google Patents
Liquid distributor for an evaporator Download PDFInfo
- Publication number
- WO1996009872A1 WO1996009872A1 PCT/FI1995/000524 FI9500524W WO9609872A1 WO 1996009872 A1 WO1996009872 A1 WO 1996009872A1 FI 9500524 W FI9500524 W FI 9500524W WO 9609872 A1 WO9609872 A1 WO 9609872A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- conduits
- evaporator
- feed
- liquid distributor
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
- F28F9/0275—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple branch pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/008—Liquid distribution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7182—Feed mechanisms characterised by the means for feeding the components to the mixer with means for feeding the material with a fractal or tree-type distribution in a surface
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/10—Concentrating spent liquor by evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/41—Mixers of the fractal type
Definitions
- the present invention relates to a liquid distributor in an evaporator, which distributor is intended in particular for liquid suspensions containing solid ingredients and comprises at the upper end of the heat exchange surface a transverse conduit frame which includes liquid conduits for distributing over the entire width of the surface a liquid introduced from the side of the evaporator.
- the surface In an evaporator in which the liquid flows as a thin film on the heat exchange surface, the surface should be covered with liquid throughout in order to achieve an efficient transfer of heat.
- a liquid suspension which contains solid ingredients is being evaporated, increasing concentrations of solids at the boundaries of the dry and liquid-covered areas of the heat exchange surface would additionally cause very rapid soiling of the heat exchange surface.
- An even distribution over the heat exchange surface of the liquid to be evaporated is thus an absolute prerequisite for efficient operation of the evap ⁇ orator.
- the apparatus described in FI publication 86961 is intended for the distillation of seawater.
- the publication mentions as an intended use of the apparatus the concentration of solutions and suspensions, such as bleaching effluents.
- the apparatus has the deficiency that the fiber material and other solids present in the suspension tend to clog the obliquely oriented narrow liquid conduits in the honeycombs.
- An object of the present invention is to provide a liquid dis ⁇ tributor for an evaporator, a liquid distributor in which the problem of prior-art systems, the clogging of conduits by solids present in the suspension, is avoided and which is therefore especially suitable for the treatment of wood- processing industry waste waters which contain fiber materials, such as the waste liquor from pulping or bleaching effluents, or for the treatment of food-industry waste waters which form carbonate, oxalate and other precipitates.
- the liquid distrib ⁇ utor according to the invention is characterized in that it has an obliquely downwards slanted feed conduit and a plurality of distribution conduits branching out therefrom and leading to the heat exchange surface, and that at each branching point of the feed conduit and a distribution conduit the common wall surface of the conduits, downstream relative to the feed flow, is rounded so that the dividing of the flow takes place on the curved dividing surface formed by the wall.
- the liquid distributor according to the present invention comprises a common oblique feed conduit which divides the liquid into distribution conduits departing therefrom, which distribution conduits may be substantially vertical.
- the liquid to be evaporated flows in the feed conduit in a cascade ⁇ like manner from one dividing surface at a branching point of the conduits to another, the curved dividing surface dividing the stream at the given point into a principal component which will continue forwards in the feed conduit and a component passing via the distribution conduit to the heat exchange sur ⁇ face.
- the dividing is regulated, for example, by the radius of curvature of the dividing surface and by the angle at which the feed conduit flow impinges upon the dividing surface, and on the basis of preliminary experiments it is possible, by regu ⁇ lating these according to the type of the suspension to be evaporated, to accomplish a substantially equal division of the liquid among the distribution conduits.
- the curved dividing surfaces effectively control the tendency of the conduits to become clogged by solid ingredients of the suspension, for example by eliminating from the liquid flow path any sharp edges to which agglomerations of solids could adhere.
- the feed and distribution conduits are preferably delimited by wall surfaces terminating in a common sharp tip.
- the sharp tip con ⁇ stitutes a step from which the inflow of the feed conduit will jump over the mouth of the distribution conduit onto the divid ⁇ ing surface, where the dividing of the flow takes place.
- the distribution conduit wall surface which terminates in the tip may be rounded in a manner corresponding to the dividing sur ⁇ face.
- the radius of curvature of the dividing surfaces may be, for example, within a range of approx.
- the width of the distribution conduits may vary within a range of approx. 10-30 mm, preferably approx. 15- 25 mm.
- the width of distribution conduits branching out from the feed conduit may be the same for all conduits, or it may increase progressively from the side of the evaporator towards its middle.
- the liquid distributor according to the invention comprises two mutually symmetrical feed conduits which start on the opposite sides of the evap ⁇ orator and extend to the middle of the evaporator in such a manner that each feed conduit will feed liquid to its own half of the evaporator.
- the liquid distributor according to the invention can be used in a heat exchanger of the type according to FI lay-open print 86961 to direct a liquid suspension to be evaporated onto the outer surfaces of bags of plastic membrane.
- the liquid dis ⁇ tributor extending in the transverse direction from one side of the bag to the other in this case distributes the liquid over the entire width of the heat exchange surfaces of the bags.
- the vapor produced from the liquid may be directed to a compressor and from there, having been compressed to higher pressure and temperature, to the inside of the bags as heating vapor, which will recondense to liquid in the heat exchange process. How ⁇ ever, the use of heating vapor produced in some other manner is equally possible.
- the liquid distributor according to the invention can be con ⁇ structed from two vertical wall elements which have been fabri ⁇ cated from, for example, plastic by injection molding, and be ⁇ tween which the liquid conduits are formed.
- a wall element of the liquid distributor may at the same time serve to delimit vapor conduits leading to the inside of the bags on its opposite side.
- the feeding of liquid and vapor into the heat exchanger can thus be arranged by attaching to each other said elements, which will delimit, between them, alternately liquid conduits leading to the space between the bags and vapor conduits leading to the inside of the bags. Owing to the compact structure, the liquid conduits can be made maximally wide, which will also prevent their tendency to become clogged.
- Figure 1 depicts a vertical section of a liquid dis ⁇ tributor according to the invention
- Figures 2-4 depict a wall element of the liquid distributor according to Figure 1, in horizontal sections II-II, III-III and IV-IV of Figure 1,
- Figure 5 depicts a partial horizontal section of three wall elements attached one to another, the wall elements forming a distributor for both the liquid to be evaporated and for the heating vapor, and
- Figure 6 depicts on a larger scale the branching points of the conduits of the liquid distributor ac ⁇ cording to Figure 1.
- the liquid distributor according to the invention for an evapo ⁇ rator comprises a conduit frame which is made up of two verti ⁇ cal wall elements 1, 2, for example, injection molded from a plastic material, these wall elements delimiting between them ⁇ selves the liquid conduits 3, 4 of the distributor.
- the liquid conduits 3, 4 have been produced by forming, in connection with injection molding, recesses in the wall element 1 according to Figures 1-4 and by closing these on their open side by a second wall element 2 in accordance with Figure 5.
- Figure 5 addition ⁇ ally shows vapor conduits 5 closed by means of a wall element 1 according to Figures 1-4, which vapor conduits will be returned to in greater detail hereinafter.
- the liquid conduits which can best be seen in Figures 1 and 6, comprise a feed conduit 3 starting from the distributor end 6 located on the side of the evaporator, the feed conduit extend ⁇ ing obliquely downwards to the middle of the distributor, and a plurality of substantially vertical distribution conduits 4 which branch out from the feed conduit at branching points 7 and lead to the heat exchange surface (not shown) of the evapo ⁇ rator.
- the width D (cf. Figure 6) of the distribution conduits 4 branching out from the feed conduit 3 may be constant or grow progressively, conduit by conduit, towards the middle of the distributor.
- the distributor comprises a symmetrically cor ⁇ responding system of liquid conduits made up of feed and dis ⁇ tribution conduits 3, 4.
- the feed flow of the liquid to be evaporated is directed in accordance with arrows 8 in Figure 1 to the feed conduits 3, from where it is divided into partial flows according to arrows 9, into the distribution conduits 4 leading to the heat exchange surface, substantially equally among the distribution conduits.
- the liquid can be dis ⁇ tributed from the distribution conduits 4 evenly over the en ⁇ tire width of the heat exchange surface.
- the feed conduit 3 Via its end in the middle of the distributor, the feed conduit 3 communicates with the vapor spaces of the evaporator so that during operation the feed conduit is in part filled with vapor 14 formed in the evaporation. It is necessary to regulate the feeding in of the liquid to be evaporated in such a manner that the feed conduit 3 is not in its entirety filled with liquid, because otherwise the produced siphon effect would hamper even distribution of the liquid.
- the branching points 7 of the conduits and the division of the liquid flow at them into partial flows passing to the heat exchange surface is seen on a larger scale in Figure 6.
- the feed flow traveling in the feed conduit 3 is indicated in the figure by numeral 8 and the partial flows separating into the distribution conduits 4 by numeral 9.
- the wall surface common to the conduits, down ⁇ stream relative to the feed flow 8 is formed into a curved dividing surface 10, the radius of which is indicated by R.
- the wall surface of the distribution conduit 4 is rounded correspondingly, and the wall surface of the conduit 4 and the wall surface of the feed conduit 3 together form a sharp feeding tip 11 from which the arriving feed flow 8 jumps over the end of the distribution conduit onto the dividing surface 10, on which the division of the flow takes place at each given point.
- the successive divid ⁇ ing surfaces 10, terminating in feeding tips 11, are dimen ⁇ sioned so that the feeding tip of a dividing surface lower in the direction of the flow is at each given point disposed a few millimeters below the theoretical continuation of the feeding tip of the next dividing surface upstream.
- the impinging angle of the flow 8 to the tangent of the dividing surface 10 is indicated in the figure by ⁇ .
- the division of the feed flow 8 into partial flows 9 depends on the composition of the liquid, on the radius R of curvature of the dividing surface, and on the impinging angle ⁇ , which in turn is dependent on, for example, the velocity of the flow and the width D of the dis ⁇ tribution conduits 4, and the distribution may be regulated by varying the said values.
- solid material adheres momentarily to the dividing surfaces 10 at the impinging points of the feed flow 8, but as the accumulation of material in ⁇ creases it either continues forward in the feed conduit 8 or falls into the distribution conduit, i.e. in operation the device is self-cleaning.
- the impinging angle ⁇ of the feed flow 8 is advantageously set close to a right angle, for example, within a range of approx. 90-110°.
- the liquid conduits 3, 4 in the distributor are located in accordance with Figure 5 between two wall elements 1, 2 fastened to each other.
- the locking of the elements 1, 2 to each other is effected by snap fastenings of vertical projections 12 in element 1 according to Figures 1-4 to corresponding recesses 13 in the other element 2.
- the heat exchange surface being of plastic membrane, the upper end of the membrane may be locked (not shown) between the elements 1, 2 fastened to each other.
- the said second wall element 2 in Figure 5 is designed so that, together with a third element, element 1 according to Figures 1-4, it delimits vertical vapor conduits 5 from which heating vapor is directed to that side of the heat exchange surface which is opposite to the liquid to be evaporated.
- the heating vapor is direct ⁇ ed via conduits 5 to the inside of the bags and the liquid to be evaporated is directed via conduits 3, 4 onto the outer surfaces of the bags.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU35237/95A AU689957B2 (en) | 1994-09-27 | 1995-09-26 | Liquid distributor for an evaporator |
BR9509106A BR9509106A (en) | 1994-09-27 | 1995-09-26 | Liquid distributor for an evaporator |
DE69519992T DE69519992T2 (en) | 1994-09-27 | 1995-09-26 | LIQUID DISTRIBUTOR FOR EVAPORATORS |
DK95932029T DK0783359T3 (en) | 1994-09-27 | 1995-09-26 | Liquid distributor for evaporators |
US08/809,775 US5904807A (en) | 1994-09-27 | 1995-09-26 | Liquid distributor for an evaporator |
CA002200948A CA2200948C (en) | 1994-09-27 | 1995-09-26 | Liquid distributor for an evaporator |
EP95932029A EP0783359B1 (en) | 1994-09-27 | 1995-09-26 | Liquid distributor for an evaporator |
AT95932029T ATE198837T1 (en) | 1994-09-27 | 1995-09-26 | LIQUID DISTRIBUTOR FOR EVAPORATORS |
JP51116496A JP3916657B2 (en) | 1994-09-27 | 1995-09-26 | Liquid distributor for evaporator |
NO971427A NO971427L (en) | 1994-09-27 | 1997-03-25 | Liquid distributor for an evaporator |
GR20010400298T GR3035464T3 (en) | 1994-09-27 | 2001-02-22 | Liquid distributor for an evaporator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI944471 | 1994-09-27 | ||
FI944471A FI97694C (en) | 1994-09-27 | 1994-09-27 | Liquid distributor for an evaporator |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996009872A1 true WO1996009872A1 (en) | 1996-04-04 |
Family
ID=8541452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1995/000524 WO1996009872A1 (en) | 1994-09-27 | 1995-09-26 | Liquid distributor for an evaporator |
Country Status (15)
Country | Link |
---|---|
US (1) | US5904807A (en) |
EP (1) | EP0783359B1 (en) |
JP (1) | JP3916657B2 (en) |
KR (1) | KR100385623B1 (en) |
AT (1) | ATE198837T1 (en) |
AU (1) | AU689957B2 (en) |
BR (1) | BR9509106A (en) |
DE (1) | DE69519992T2 (en) |
DK (1) | DK0783359T3 (en) |
ES (1) | ES2155529T3 (en) |
FI (1) | FI97694C (en) |
GR (1) | GR3035464T3 (en) |
NO (1) | NO971427L (en) |
PT (1) | PT783359E (en) |
WO (1) | WO1996009872A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997007867A1 (en) * | 1995-08-22 | 1997-03-06 | Hadwaco Ltd Oy | Liquid distributor for evaporator |
EP1829594A1 (en) * | 2004-12-15 | 2007-09-05 | Asahi Kasei Chemicals Corporation | Industrial evaporator |
EP1849509A1 (en) * | 2004-12-20 | 2007-10-31 | Asahi Kasei Chemicals Corporation | Industrial evaporator |
CN103418152A (en) * | 2012-05-25 | 2013-12-04 | 株式会社吴羽 | Redistributor for packed tower, packed tower, and method for distilling 1,1-dichloroethylene monomer |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19602640A1 (en) * | 1996-01-25 | 1997-07-31 | Basf Ag | Process and evaporator for evaporating compounds sensitive to oxidation |
FR2771019B1 (en) * | 1997-11-17 | 2000-02-04 | Air Liquide | LIQUID DISPENSER FOR DISTILLATION COLUMN, AND DISTILLATION COLUMN THEREOF |
US6328096B1 (en) * | 1997-12-31 | 2001-12-11 | Temptronic Corporation | Workpiece chuck |
US6866094B2 (en) * | 1997-12-31 | 2005-03-15 | Temptronic Corporation | Temperature-controlled chuck with recovery of circulating temperature control fluid |
US6415858B1 (en) | 1997-12-31 | 2002-07-09 | Temptronic Corporation | Temperature control system for a workpiece chuck |
US6047484A (en) * | 1998-07-10 | 2000-04-11 | Bolland; Karin Marie | Method and apparatus for evaporating liquid from a product |
EP0997178A1 (en) * | 1998-10-30 | 2000-05-03 | The Boc Group, Inc. | A liquid distributor for a distillation column |
DE19957458A1 (en) * | 1999-11-29 | 2001-05-31 | Bayer Ag | String evaporator used for removing volatile components has a product distributor formed as a pipe distributor having parallel nozzle pipes with openings in the pipe wall |
DE10039592A1 (en) * | 2000-08-12 | 2002-05-16 | Xcellsis Gmbh | Device for feeding starting materials to parallel rooms |
CA2317620A1 (en) * | 2000-09-06 | 2002-03-06 | Dennis William Mount | Anti-pressure system |
DE102004045671A1 (en) * | 2004-09-17 | 2006-03-23 | Uhde Gmbh | Part loadable falling film evaporator and partial load operation method |
TWI320094B (en) * | 2006-12-21 | 2010-02-01 | Spray type heat exchang device | |
WO2009088085A1 (en) * | 2008-01-10 | 2009-07-16 | Mg Grow Up Corp. | Static fluid mixer |
FR2938904B1 (en) * | 2008-11-24 | 2012-05-04 | Air Liquide | HEAT EXCHANGER |
BRPI1009797A2 (en) * | 2009-03-27 | 2017-06-13 | Framo Eng As | subsea cooler, and method for subsea cooler cleaning |
CN102079463A (en) * | 2009-11-26 | 2011-06-01 | 江南大学 | Novel combined yarn collecting spindle |
JP5856087B2 (en) * | 2010-03-08 | 2016-02-09 | アービンド アクセル リミティド | Heat exchange element, heat exchanger equipped with the heat exchange element, and manufacturing equipment for the heat exchange element |
JP5761593B2 (en) * | 2011-02-10 | 2015-08-12 | 株式会社リコー | Heat exchange apparatus and image forming apparatus |
CN104043258B (en) * | 2014-06-25 | 2015-09-09 | 江苏中圣高科技产业有限公司 | A kind of evaporimeter liquid distribution trough |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1519741A1 (en) * | 1965-06-03 | 1970-03-12 | Wiegand Appbau Gmbh | Device for even distribution of the liquid on the heating pipes of falling film evaporators |
WO1992010265A1 (en) * | 1990-12-14 | 1992-06-25 | Aquamax Oy | Distillation apparatus |
WO1995008381A1 (en) * | 1993-09-22 | 1995-03-30 | Oy Shippax Ltd. | Fluid distributor of a membrane distiller and the use of the distiller |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US709297A (en) * | 1901-06-11 | 1902-09-16 | Firm Of Zellstofffabrik Dueren Hermann Maria Schoeller & Co | Evaporator. |
US1249557A (en) * | 1916-09-05 | 1917-12-11 | Harold Sage Truscott | Calandria for vacuum drying-pans and the like. |
NL131263C (en) * | 1964-03-19 | |||
DE2212816C3 (en) * | 1972-03-16 | 1974-12-12 | Wiegand Karlsruhe Gmbh, 7505 Ettlingen | Device for evenly distributing the liquid to be evaporated in a falling film evaporator |
US3794056A (en) * | 1972-11-17 | 1974-02-26 | R Warren | Fluidic pulse and flow divider |
US4277425A (en) * | 1978-03-17 | 1981-07-07 | Max Leva | Tower packing element |
DE68917470T2 (en) * | 1988-08-26 | 1994-12-15 | Aquamax Oy | DISTILLING ARRANGEMENT. |
US5770020A (en) * | 1990-12-14 | 1998-06-23 | Keeran Corporation N.V. | Distillation apparatus |
CH691995A5 (en) * | 1995-09-02 | 2001-12-31 | Vaclav Feres | Apparatus for treating liquid products. |
-
1994
- 1994-09-27 FI FI944471A patent/FI97694C/en not_active IP Right Cessation
-
1995
- 1995-09-26 US US08/809,775 patent/US5904807A/en not_active Expired - Lifetime
- 1995-09-26 DE DE69519992T patent/DE69519992T2/en not_active Expired - Fee Related
- 1995-09-26 ES ES95932029T patent/ES2155529T3/en not_active Expired - Lifetime
- 1995-09-26 WO PCT/FI1995/000524 patent/WO1996009872A1/en active IP Right Grant
- 1995-09-26 DK DK95932029T patent/DK0783359T3/en active
- 1995-09-26 KR KR1019970701951A patent/KR100385623B1/en not_active IP Right Cessation
- 1995-09-26 EP EP95932029A patent/EP0783359B1/en not_active Expired - Lifetime
- 1995-09-26 AT AT95932029T patent/ATE198837T1/en not_active IP Right Cessation
- 1995-09-26 BR BR9509106A patent/BR9509106A/en not_active IP Right Cessation
- 1995-09-26 JP JP51116496A patent/JP3916657B2/en not_active Expired - Fee Related
- 1995-09-26 PT PT95932029T patent/PT783359E/en unknown
- 1995-09-26 AU AU35237/95A patent/AU689957B2/en not_active Ceased
-
1997
- 1997-03-25 NO NO971427A patent/NO971427L/en not_active Application Discontinuation
-
2001
- 2001-02-22 GR GR20010400298T patent/GR3035464T3/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1519741A1 (en) * | 1965-06-03 | 1970-03-12 | Wiegand Appbau Gmbh | Device for even distribution of the liquid on the heating pipes of falling film evaporators |
WO1992010265A1 (en) * | 1990-12-14 | 1992-06-25 | Aquamax Oy | Distillation apparatus |
WO1995008381A1 (en) * | 1993-09-22 | 1995-03-30 | Oy Shippax Ltd. | Fluid distributor of a membrane distiller and the use of the distiller |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997007867A1 (en) * | 1995-08-22 | 1997-03-06 | Hadwaco Ltd Oy | Liquid distributor for evaporator |
US6068730A (en) * | 1995-08-22 | 2000-05-30 | Hadwaco Ltd Oy | Liquid distributor for evaporator |
EP1829594A1 (en) * | 2004-12-15 | 2007-09-05 | Asahi Kasei Chemicals Corporation | Industrial evaporator |
EP1829594A4 (en) * | 2004-12-15 | 2008-07-09 | Asahi Kasei Chemicals Corp | Industrial evaporator |
US7658817B2 (en) | 2004-12-15 | 2010-02-09 | Asahi Kasei Chemicals Corporation | Industrial evaporation apparatus |
EP1849509A1 (en) * | 2004-12-20 | 2007-10-31 | Asahi Kasei Chemicals Corporation | Industrial evaporator |
EP1849509A4 (en) * | 2004-12-20 | 2008-07-09 | Asahi Kasei Chemicals Corp | Industrial evaporator |
CN103418152A (en) * | 2012-05-25 | 2013-12-04 | 株式会社吴羽 | Redistributor for packed tower, packed tower, and method for distilling 1,1-dichloroethylene monomer |
Also Published As
Publication number | Publication date |
---|---|
KR100385623B1 (en) | 2003-08-14 |
FI944471A (en) | 1996-03-28 |
AU3523795A (en) | 1996-04-19 |
FI97694C (en) | 1997-02-10 |
BR9509106A (en) | 1998-11-03 |
FI944471A0 (en) | 1994-09-27 |
DE69519992D1 (en) | 2001-03-01 |
JP3916657B2 (en) | 2007-05-16 |
DE69519992T2 (en) | 2001-06-07 |
NO971427D0 (en) | 1997-03-25 |
EP0783359B1 (en) | 2001-01-24 |
ATE198837T1 (en) | 2001-02-15 |
PT783359E (en) | 2001-05-31 |
KR970706049A (en) | 1997-11-03 |
ES2155529T3 (en) | 2001-05-16 |
US5904807A (en) | 1999-05-18 |
GR3035464T3 (en) | 2001-05-31 |
FI97694B (en) | 1996-10-31 |
EP0783359A1 (en) | 1997-07-16 |
AU689957B2 (en) | 1998-04-09 |
JPH10506050A (en) | 1998-06-16 |
DK0783359T3 (en) | 2001-02-05 |
NO971427L (en) | 1997-03-25 |
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