EP1804947A1 - Method and device for evaporating a cryogenic liquid - Google Patents
Method and device for evaporating a cryogenic liquidInfo
- Publication number
- EP1804947A1 EP1804947A1 EP05789320A EP05789320A EP1804947A1 EP 1804947 A1 EP1804947 A1 EP 1804947A1 EP 05789320 A EP05789320 A EP 05789320A EP 05789320 A EP05789320 A EP 05789320A EP 1804947 A1 EP1804947 A1 EP 1804947A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cryogenic liquid
- water
- liquid
- packing
- cryogenic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01B—BOILING; BOILING APPARATUS ; EVAPORATION; EVAPORATION APPARATUS
- B01B1/00—Boiling; Boiling apparatus for physical or chemical purposes ; Evaporation in general
- B01B1/005—Evaporation for physical or chemical purposes; Evaporation apparatus therefor, e.g. evaporation of liquids for gas phase reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/14—Evaporating with heated gases or vapours or liquids in contact with the liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
-
- 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
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/26—Fractionating columns in which vapour and liquid flow past each other, or in which the fluid is sprayed into the vapour, or in which a two-phase mixture is passed in one direction
Definitions
- the invention relates to a method and apparatus for vaporizing a cryogenic liquid
- cryogenic liquid to be evaporated can occur, for example, in connection with the emptying of a rectification column. Even with minor breakdowns, in which a short-term cryogenic product is produced with insufficient purity, which is not to be merged with the "pure" product, such can be incurred to be disposed of liquid quantities.
- cryogenic liquid to be evaporated is usually disposed of by means of a steam or Heilejektors.
- Object of the present invention is therefore to show an alternative way of vaporizing cryogenic liquids.
- the device according to the invention is characterized in that a container with a packing, with a supply for the cryogenic liquid, with a distributor for distributing the cryogenic liquid on the package and with a supply for Water and a manifold for distributing the water is provided on the pack.
- Unordered packages also referred to as packing, are understood to mean elements which can be shaped in the most diverse ways and which are filled into a container through which the streams to be brought into contact with one another are guided.
- Ordered packs have, as the name implies, an ordered, regular structure.
- an ordered packing consists of a plurality of mutually parallel plates or plates, which are often provided with a corrugation or embossing.
- pack types are suitable for evaporating cryogenic liquids according to the invention, but in particular, ordered packings have proven to be useful.
- Packages are preferably used which have a plurality of mutually parallel, corrugated sheets, which are arranged so that the caused by the corrugation channels of adjacent sheets intersect, so that forms a cross-channel structure.
- the cryogenic liquid and water are applied to the packing and undergo direct heat exchange.
- the cryogenic liquid is evaporated and there is a laden with water in the form of aerosols vapor stream, which is withdrawn from the pack and disposed of or otherwise used.
- a great advantage of the invention is that this evaporation takes place without appreciable noise emissions.
- the water and the cryogenic liquid to be evaporated are passed through the packing in cocurrent.
- the cryogenic liquid and the water are supplied above the package via suitable lines and distributed by distributors evenly on the package in order to fully exploit the large surface area of the package can.
- the distribution of the water and the cryogenic liquid is preferably carried out by means of Rohrvermaschinem. It has been found that it is particularly favorable when the feed of the cryogenic liquid is carried out above the water feed, that is, when the distributor for the cryogenic liquid is arranged above the distributor for the water. Namely, the cryogenic liquid distributor is not wetted by the water sprayed through the water distributor and, on the other hand, has a sufficient distance from the package so that the risk of water splashing from the package to the distributor openings may occur freeze, minimized.
- a particularly efficient evaporation of the cryogenic liquid is achieved if the water and the cryogenic liquid are distributed as homogeneously as possible over the entire surface of the package.
- several layers of an ordered package are provided one above the other.
- the individual layers are included preferably in each case rotated against each other by 90 °, in order to prevent Maldistributionen within the pack or to keep low.
- 2 to 8 packing layers more preferably 3 to 5 packing layers are provided.
- the uppermost portions of the packing first come in contact with the cryogenic liquid and the water. In these upper areas there is a strong increase in volume due to the evaporation of the cryogenic liquid. In contrast, in the parts of the pack lying further down, the cryogenic liquid has already evaporated and only the heating of the resulting gas takes place.
- the pack consists of several different, stacked packing layers.
- the ratio of the liquid flows of water to cryogenic liquid is preferably between 3 and 6 l / Nm 3 , that is, for the evaporation of 1 Nm 3 of cryogenic liquid, preferably 3 to 6 liters of water are used.
- cryogenic liquid With the method according to the invention arbitrarily large streams of cryogenic liquid can be evaporated.
- the preferred field of use is the evaporation of 1000 Nm 3 / h to 50,000 Nm 3 / h of cryogenic liquid.
- a packing volume between 0.05 m 3 and 0.5 m 3 is sufficient.
- the required packing volume also depends on the specific surface area of the packing, that is to say on its surface, relative to its volume. Preference is given to using packings having a specific surface area or packing density of between 300 m 2 / m 3 and 750 m 2 / m 3 , more preferably between 500 m 2 / m 3 and 700 m 2 / m 3 .
- the invention is particularly useful for vaporizing cryogenic liquids resulting from the operation of cryogenic air separation plants, preferably for the vaporization of liquid nitrogen, liquid oxygen, liquid argon, or a mixture thereof.
- FIG. 1 shows a section through a device according to the invention for the evaporation of a cryogenic liquid
- Figure 2 shows a section through the device according to the invention perpendicular to the illustration of Figure 1 and
- Figure 3 is a plan view of the manifold for the cryogenic liquid.
- the device shown in the figures is suitable for the evaporation of cryogenic liquid, wherein in the following the structure of the device according to the invention and their operation will be explained by way of example with reference to the evaporation of liquid nitrogen from a cryogenic air separation plant.
- the device according to the invention has, as can be seen in FIGS. 1 and 2, a container 1.
- Six layers 2a, 2b, 2c, 2d, 2e, 2f of an ordered packing are arranged one above the other in the container 1.
- the packing layers 2a, 2b, 2c, 2d, 2e, 2f are supported by a grid 3.
- the individual packing layers 2a, 2b, 2c, 2d, 2e, 2f each consist of a multiplicity of packing sheets arranged parallel to one another, each of which is provided with a corrugation extending obliquely to the sheet metal edges, the corrugations of adjacent sheets intersecting one another. Adjacent packing layers are each positioned so that their sheets are arranged rotated by 90 ° to each other.
- the pipe distributor 4 has a water supply 5, branch off from the plurality of L-shaped Verteilarme 6, the horizontal legs are arranged parallel to each other and provided with outlet openings 7.
- the embodiment shown in Figures 1 and 2 has four Verteilarme 6, each with four outlet openings 7, so that there are a total of 16 evenly distributed over the cross section of the container 1 Wasserasutrittsnnen.
- the manifold 8 which is also designed as a manifold, has a central, vertical supply line 9, which opens into a main channel 10. From the main channel 10 branch off three Verteilarme 11, each having outlet openings 12.
- a gas exhaust pipe 13 projects horizontally into the free space below the grating 3 and is provided on its underside with an opening 14. By this geometric shape prevents the trickling down from the top liquid enters the gas exhaust pipe 13. At the bottom of the container 1 finally an outlet opening 15 is provided for water.
- the cryogenic liquid nitrogen to be evaporated is supplied via the line 9 to the manifold 8 and distributed uniformly over the cross section of the container 1.
- a heat carrier 8 hot water at a temperature of 35 to 40 ° C is supplied via the water manifold 4 below the nitrogen spreader.
- the nitrogen gas is entrained with the water over the individual packing layers 2a, 2b, 2c, 2d, 2e, 2f down and heated thereby.
- the resulting nitrogen gas is withdrawn via the gas exhaust pipe 13 from the container 1, and blown off to the environment or fed to another use.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05789320A EP1804947A1 (en) | 2004-10-29 | 2005-09-27 | Method and device for evaporating a cryogenic liquid |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410052556 DE102004052556A1 (en) | 2004-10-29 | 2004-10-29 | Evaporation of cryogenic liquid, e.g. in low temperature air decomposition, involves direct heat exchange with water on packings |
EP05001810 | 2005-01-28 | ||
EP05789320A EP1804947A1 (en) | 2004-10-29 | 2005-09-27 | Method and device for evaporating a cryogenic liquid |
PCT/EP2005/010431 WO2006048082A1 (en) | 2004-10-29 | 2005-09-27 | Method and device for evaporating a cryogenic liquid |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1804947A1 true EP1804947A1 (en) | 2007-07-11 |
Family
ID=35432363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05789320A Withdrawn EP1804947A1 (en) | 2004-10-29 | 2005-09-27 | Method and device for evaporating a cryogenic liquid |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1804947A1 (en) |
WO (1) | WO2006048082A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1000716A1 (en) * | 1981-08-07 | 1983-02-28 | Ташкентский Ордена Дружбы Народов Политехнический Институт Им.А.Р.Бируни | Gas-liquid heat exchanger |
GB8923261D0 (en) * | 1989-10-16 | 1989-12-06 | Boc Group Plc | Cooling liquids |
GB9208647D0 (en) * | 1992-04-22 | 1992-06-10 | Boc Group Plc | Air separation |
JP2603817Y2 (en) * | 1993-06-04 | 2000-03-27 | 日本酸素株式会社 | White smoke generator |
RU2079317C1 (en) * | 1995-04-13 | 1997-05-20 | Закрытое Акционерное общество "ЭЛОРГ СТМ" | Generator for gas-type fire-fighting plant |
DE10346549A1 (en) * | 2003-10-07 | 2005-05-04 | Linde Ag | Flat evaporators |
-
2005
- 2005-09-27 EP EP05789320A patent/EP1804947A1/en not_active Withdrawn
- 2005-09-27 WO PCT/EP2005/010431 patent/WO2006048082A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2006048082A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006048082A1 (en) | 2006-05-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
17P | Request for examination filed |
Effective date: 20070405 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MOLL, ANTON Inventor name: EICHELMANN, ROBERT Inventor name: SEGATZ, JAN |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LINDE AKTIENGESELLSCHAFT |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LINDE AG |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20130321 |
|
R18W | Application withdrawn (corrected) |
Effective date: 20130321 |