CN1048909C - Evaporator operating according to the falling film principle - Google Patents
Evaporator operating according to the falling film principle Download PDFInfo
- Publication number
- CN1048909C CN1048909C CN94195141A CN94195141A CN1048909C CN 1048909 C CN1048909 C CN 1048909C CN 94195141 A CN94195141 A CN 94195141A CN 94195141 A CN94195141 A CN 94195141A CN 1048909 C CN1048909 C CN 1048909C
- Authority
- CN
- China
- Prior art keywords
- evaporation
- steam
- evaporation tube
- tube system
- chamber
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The present invention relates to an evaporator which runs by a falling-film theory. The evaporator is composed of a casing (1) and an evaporating tube system (2) which is arranged in the casing (1). Liquid to be concentrated is fed onto the outer surface of the evaporating tube system (2), and the steam is guided to flow in tubes of the evaporating tube system (2). The evaporating tube system (2) of the present invention is composed of evaporating elements, wherein each evaporating element is composed of evaporating tubes (9) which basically lie in the same level. The upper ends of the tubes are connected with a public collecting chamber (8), and the lower ends of the tubes are connected with a public collecting chamber (10). The evaporator has the connection method that the tubes 9 are connected between the two collecting chambers (8, 10); due to the connection, the collecting chamber (8) at the upper ends of the evaporating elements is internally connected by an upper connecting chamber (12), and the collecting chamber (10) at the lower ends of the evaporating elements is internally connected by a lower connecting chamber (13).
Description
The present invention relates to a kind of evaporimeter with the falling film principle operation, it constitutes a shell and evaporation tube system therein, this system constitutes vertical evaporation tube, element on the agent feed-in evaporation tube that is used for to be evaporated, it makes agent along evaporation tube trickling downwards and form a film on the outer surface of evaporation tube, and the heating steam that is connected with the inside of evaporation tube enters the mouth and exit passageway with ining addition.
It is existing for a long time to be widely used in concentrating of liquid with the evaporimeter of falling film principle operation.In these evaporimeters, be to allow a liquid to flow and with the outer surface of steam heating pipe along the inner surface of heating tube with the form of film commonly, thus, the heat of steam causes that water evaporates and makes water flow into collecting chamber and further flow out collecting chamber with the form of steam with the form of steam from the liquid that will be concentrated.As a result, the liquid that is concentrated flows downward along pipe and enters a collecting chamber and flow out collecting chamber by a split tunnel.The steam that is used to heat partial condensation at least becomes water and makes condensate liquid and discharge by a split tunnel.Remaining steam is discharged from discretely once more by an exit passageway that is used in particular for steam.
In known method, employed exemplary apparatus is that such Guan Yiqi end that promptly is formed with an area of heating surface is fixed on and is called between the tube sheet.Tube sheet have the hole that is used for pipe end and respectively in the feed-in chamber that is concentrated liquid, vaporium and be formed with spaced walls between the concentrated liquid collecting chamber.A kind of like this method is for example known from No. 71067, Finnish patent.
Know a kind of method again No. 76699 from Finnish patent.In this method, evaporation tube by two each other wherein pipe form, constituted mode be the upper end of outer tube be closed make steam along the surface between the pipe by and return by interior pipe.On the other hand, the liquid that will be concentrated from the outside feed-in of pipe.Also be in this method, need a resistance to compression tube sheet for these pipelines, because pipe is mutually wherein, size and installation should be very accurate.
When needing the content of high dry, the problem in the known method is and must provides enough temperature with steam that the foundry goods shell (casting) of evaporimeter is exposed to high steam pressure thus.Therefore, the foundry goods shell must be made and the whole structure of evaporimeter must be very solid by thick material, this means higher manufacturing expense.In addition, make in the method that liquid passes through pipe a kind of, the dirt that accumulates in pipe internal surface may become piece to come off and chock tube so that can not come successfully scavenge pipe with typical method with washing lotion again, the consequently evaporability of equipment reduction.In addition, require very accurately according to the manufacturing of the tube sheet of these known methods, thereby cost is very high.
The purpose of this invention is to provide an evaporimeter, can avoid above-mentioned shortcoming and for making and very simple for cleaning if desired with this kind evaporimeter.Evaporimeter according to the present invention is characterized in that the evaporation tube system is made of a plurality of parallel evaporation elements.
Basic conception of the present invention is that evaporation element is made of evaporation tube, and upper end and lower end that constituted mode is preferably evaporation tube preferably interconnect respectively by the tubulose collecting chamber.The a plurality of evaporation elements that are made of the parallel evaporation tube on same level preferably that are further characterized in that of the present invention are installed in the same evaporimeter with parallel mode.A most preferred embodiment of the present invention is further characterized in that the collecting chamber of the evaporation element of separation connects in being, connected mode on the one hand the collecting chamber of pipe upper end and on the other hand the collecting chamber of managing the lower end preferably by the tubulose junction chamber or if possible the junction chamber of certain other shape interconnect.Another kind of basic thought of the present invention be by the distributing slot of evaporation tube upper end on its outer surface the feed-in liquid that will concentrate pass through in the chamber of the collection of evaporation tube inside preferably downward feed-in steam from the upper end, the condensate liquid that the result produced and discharge from the collecting chamber of the other end as the residual steam of steam, the two is preferably by split tunnel or by a public passage.Steam also can be from down feed-in, this occasion from following collection condensate liquid and residual steam from above collect.
An advantage according to evaporimeter of the present invention is because it is to be made of a plurality of parallel evaporation element with the same manner manufacturing, so be easy to concerning making with simple.Because these elements can be only at one end supported,, do not have the thermal stress that will be compensated yet and take place even area of heating surface pipe and shell are made with different materials.Guard system according to evaporimeter of the present invention is difficult for blocking in addition, because have only steam and condensate liquid to pass through evaporation tube.In addition because have only those evaporation elements that contain steam to have high pressure, so according to structure of the present invention can make light relatively.Can with a kind of desirable mode select these elements evaporation tube wall thickness and do not influence the remainder of evaporimeter such as the thickness of shell thus.In addition, the area of heating surface according to evaporimeter of the present invention can be cleaned if desired easily, because be fixed in the area of heating surface from concentrate or the next possible dirt of certain other liquid, it is positioned at the outer surface of evaporation tube, thus can with general known mode by dissolving for example with pressure washer or certain other similarly device clean evaporimeter and needn't be in the inner cleaning of guard system.
The present invention will describe in more detail by accompanying drawing, wherein
Fig. 1 schematically shows according to evaporimeter profile of the present invention, and section is parallel with evaporation element,
Fig. 2 shows the profile according to the relative evaporation element of evaporimeter of the present invention,
Fig. 3 a and 3b schematically show the side diagrammatic sketch according to an evaporation element of the present invention, and
Fig. 4 schematically shows the perspective view according to an embodiment of evaporimeter of the present invention.
Fig. 1 and Fig. 2 schematically show according to an evaporimeter of the present invention, and parallel with evaporation element on the one hand profile is the profile of relative evaporation element on the other hand.This evaporimeter is made of a shell 1, and shell 1 comprises an evaporation tube system 2 that is made of evaporation element, and the element that schematically shows among evaporation element and those Fig. 3 afterwards is similar.The liquid feed-in shell 1 that will concentrate by a connector 3 arrives its bottom, and the liquid that concentrate is black liquor in this occasion.Liquid is by going out opening connector 4 and discharge with base of evaporator and part liquid being drawn into element (distributing slot) 7 via the mode of the pump 5 that schematically shows by circulation pipe 6, element 7 flows on the collecting chamber 8 of evaporation element substantially equably and further flows downward along the surface of the evaporation tube 9 that separates therefrom from element 7 liquid on evaporation tube system 2.Application of the present invention is not limited to black liquor, but can be used for other evaporation of liquid.In the lower end of evaporation tube 9, be concentrated black liquor mobile liquid mixing with it there that also next falls in shell 1 bottom along collecting chamber 10 surfaces of lower end.For evaporation is provided, by evaporation tube 9 introduce steam and by the access road 11 within the top of evaporation tube system 2 with its feed-in.Steam at first enters junction chamber 12 therefrom, and junction chamber 12 is linked the last collecting chamber 8 of evaporation element, is evenly distributed to all evapn pipe 9 to cause steam by these evaporation elements.As a result, 10 li of the remainder by steam after the evaporation tube 9 and lower collection chamber that condensate liquid is collected in evaporation element, these collecting chambers link to each other with following junction chamber 13.Initial from the bottom of following junction chamber 13 have an exit passageway 14 that is used for condensate liquid, by this passage condensate drainage, and initial from the top of junction chamber 13 respectively an exit passageway 15 that is used for steam arranged, and discharges residue heating steam by this passage.The water of discharging from dark solution under adding heat affecting is discharged by the exit passageway above the upper end of shell 1 16 as steam, and concentrated solution is discharged from by the distribution channel 17 that schematically shows respectively.In evaporimeter inside, in the front portion of exit passageway 16 mist separator 18 is arranged further, it is made of multilayer tablet illustrated in fig. 4, and water droplet that may contain in the steam of discharging or drips of solution are bumped on multilayer tablet and along these multilayer tablets and are flowed down.Mist separator is brought in sealing with a closure casing 19 at each, and all exhaust steams must flow by mist separator 18 like this.Other known mist separator structure also can be used for this evaporimeter.
Fig. 3 a and 3b schematically show the side diagrammatic sketch of the evaporation element 2a of the evaporimeter according to the present invention respectively.Evaporation element 2a is made of last collecting chamber 8, evaporation tube 9 and following collecting chamber 10.Single evaporation element 2a plane tabular evaporation element preferably as Fig. 3 b illustrates, constitute by the parallel evaporation tube of arranging at a certain distance each other 9, each pipe 9 is linked respectively on collecting chamber 8 and 10, so that have one to be connected by each evaporation tube between collecting chamber 8 and 10.Evaporation tube 9 can be fixed on collecting chamber 8 and 10, as fixing by welding or by certain other suitable fixing means.Collecting chamber 8 and 10 is tubulose preferably, can easily provide a structure like this, and it is resistance to compression as much as possible.Whole evaporimeter also needn't be high pressure resistant because high pressure resistant, the high vapor (steam) temperature of evaporation element 2a, the available high pressure of result are evaporated.Thereby the structure of whole evaporimeter can make light relatively, that part of cost is lower than those evaporimeters of known method.The result does not need the expensive accurately tube sheet of processing for the manufacturing of evaporation element 2a, and this element can easily be assembled by tubular portion.
According to evaporimeter simple structure of the present invention, its evaporation element 2a is easy to make, and can select the number of evaporation tube in the number of evaporation element 2a and each element according to every kind of needs.Because steam by the inside of evaporation tube 9, does not block under solution that will concentrate such as liquid influence.In addition if desired, by general known way with dissolving or for example can easily clean the outer surface of evaporation tube with the mode of pressure washer or other certain similar device, because in fact long and narrow slit is arranged between pipe, making to have path by this way to feed all surface.
Fig. 4 schematically shows the perspective view according to an embodiment of evaporimeter of the present invention.This figure illustrates how form evaporation tube system 2 by arranged parallel evaporation element 2a so that for example form a square cross-section structure.By using collecting chamber 8 guard system to be supported on the carriage 20 that is fixed in shell 1, evaporation tube system 2 is being hung with respect to evaporator shell 1 place in evaporation element 2a upper end.For this purpose, the length dimension of collecting chamber 8 is decided to be makes its two end along extending outside the outermost end evaporation tube 9 of evaporation element 2a, thereby be placed on the carriage 20.As a result, last junction chamber 12 is supported by one of carriage 20.In this embodiment, junction chamber 13 under an end of collecting chamber 10 is loaded onto down.Same junction chamber 13 at present is installed in the middle body of collecting chamber 10, in the embodiment in figure 1 under them.The position of junction chamber 13 thereby can select in a desirable mode, its position is not very important for the operation of evaporimeter.In Fig. 4 to before among the figure with the same label of a part.Those parts are not done be explained in more detail.
In above specification and accompanying drawing, the present invention obtains explanation by way of example, and they are not limited to this.Evaporation element can be assembled respectively in every way according to the used pressure of each needs, size.Remove tubulose, collecting chamber 8 and 10 is other shape also. Junction chamber 12 and 13 can be linked respectively on collecting chamber 8 and 10 in every way, according to circumstances or link that it is terminal or be linked to the intermediate portion.In addition, except with the mode of describing in the past with steam by junction chamber 12 from the upper end feed-in of evaporation tube system and by junction chamber 13 from discharge the lower end of evaporation tube system, mode feed-in and discharge that also can be opposite.Thereby steam by feed-in at the junction chamber 13 of the lower end of pipe and flow through pipe 9 from bottom to top and enter collecting chamber 10; Further enter junction chamber 12 and discharge therefrom therefrom.Also have in one embodiment, the inlet of separation and exit passageway lead to outside the evaporimeter from each element; Steam can be by feed-in element lower end and is discharged from its upper end.The straightforward procedure of discharging condensate liquid is that its lower end from evaporation element is discharged.Liquid or other certain liquid that will be concentrated can be as depicted in figs. 1 and 2 feed-in base of evaporator or the direct feed-in element 7 of the mode of changing.Liquid or other certain liquid that will be concentrated can from the bottom of the shell 1 of evaporimeter discharge and with or figure shown in mode circulate or for example liquid be recycled discretely from the liquid layer top in the bottom of shell 1.Except can using part suspension from it, evaporation element also can be supported by the mode that stand in its underpart, and used chamber supports and element is placed on the carriage so that element stands on it above collecting chamber at the corresponding to carriage of this occasion and carriage for example 20.
Claims (6)
1. evaporimeter with falling film principle operation, include: shell (1) and the evaporation tube system (2) in shell, this evaporation tube system comprises the evaporation tube (9) of setting, the element (7) that is used for the agent feed-in evaporation tubes (9) that will be evaporated, the feed-in mode for make agent along evaporation tubes (9) to dirty and form a film at its outer surface, and quilt is linked evaporation tube (9) inner heating steam inlet and exit passageway (11,14,15), it is characterized in that evaporation tube system (2) is made of a plurality of parallel evaporation elements (2a), each evaporation element (2a) comprises a plurality of parallel evaporation tubes (9), the evaporation tube (9) that they have certain intervals and each evaporation element (2a) each other in the top or the lower end respectively by collecting chamber (8,10) interconnection, the entrance and exit passage (11 that adds steam, 14,15) linked collecting chamber (8,10).
2. evaporimeter according to claim 1, it is characterized in that a junction chamber (12,13) being arranged at every end of evaporation tube system (2), and the collecting chamber of each evaporation element (2a) (8,10) is all linked on the junction chamber (12,13) at same end, the entrance and exit passage (11 of heating steam, 14,15) be connected to junction chamber (12,13).
3. evaporimeter according to claim 2, it is characterized in that steam inlet passage (11) is linked the junction chamber (12) on evaporation tube system (2) so that steam is passed through evaporation tube (9) feed-in from top to bottom, the exit passageway (14) that will be used for condensate liquid is linked in the bottom of the junction chamber (13) of evaporation tube system (2) lower end so that drain the condensate liquid that is produced by steam, and the exit passageway (15) that is used for steam is linked its top respectively so that discharge still uncooled steam.
4. evaporimeter according to claim 2, it is characterized in that steam inlet passage (11) is linked at the junction chamber (13) of the lower end of evaporation tube system (2) so as by evaporation tube (9) from down toward feed-in steam upwards, the exit passageway (14) that is used for condensate liquid is linked in the bottom of the junction chamber (13) of evaporation tube system (2) lower end so that discharge the condensate liquid that is produced by steam, and the steam (vapor) outlet passage (15) that is used to discharge uncondensed vapor is linked the junction chamber (12) in the upper end of evaporation tube system (2).
5. according to the described evaporimeter of any one claim of front, it is characterized in that hanging installation from its upper end, support by the carriage that is fixed in shell (1) (20) by the evaporation tube system (2) that evaporation element (2a) constitutes.
6. evaporimeter according to claim 4, it is characterized in that the length that the collecting chamber (8) in evaporation element (2a) upper end has is that its end is on the carriage (20) across shell (1), carriage opposite shell (11) is laterally, and it is supported and suspended to make that evaporation tube system (2) is collected chamber (8) institute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94195141A CN1048909C (en) | 1994-07-05 | 1994-07-05 | Evaporator operating according to the falling film principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94195141A CN1048909C (en) | 1994-07-05 | 1994-07-05 | Evaporator operating according to the falling film principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1154663A CN1154663A (en) | 1997-07-16 |
| CN1048909C true CN1048909C (en) | 2000-02-02 |
Family
ID=5039646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94195141A Expired - Lifetime CN1048909C (en) | 1994-07-05 | 1994-07-05 | Evaporator operating according to the falling film principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048909C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI118374B (en) * | 2002-08-28 | 2007-10-31 | Steris Europe Inc | Process and apparatus for producing purified steam |
| CN1318114C (en) * | 2003-04-11 | 2007-05-30 | 中国科学院工程热物理研究所 | Evaporator for separated heat tube |
| DE102004045671A1 (en) * | 2004-09-17 | 2006-03-23 | Uhde Gmbh | Part loadable falling film evaporator and partial load operation method |
| ES2430421T3 (en) * | 2010-09-28 | 2013-11-20 | Rinheat Oy | Falling film evaporator |
| CN102389641A (en) * | 2011-09-28 | 2012-03-28 | 温州市宇达轻工机械有限公司 | Falling film plate type evaporation device |
| CN103816687A (en) * | 2014-03-18 | 2014-05-28 | 天津市恒脉机电科技有限公司 | Self-steam stripping plate type evaporation plant for evaporation of papermaking black liquid |
| CN106629935B (en) * | 2015-11-02 | 2019-11-15 | 中国石油化工股份有限公司 | A kind of wastewater treatment method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0251667A1 (en) * | 1986-06-25 | 1988-01-07 | A. Ahlstrom Corporation | Tube-type evaporator |
| US4917771A (en) * | 1987-02-26 | 1990-04-17 | Oy Santasalo-Sohlberg Oy | Distilling apparatus |
-
1994
- 1994-07-05 CN CN94195141A patent/CN1048909C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0251667A1 (en) * | 1986-06-25 | 1988-01-07 | A. Ahlstrom Corporation | Tube-type evaporator |
| US4917771A (en) * | 1987-02-26 | 1990-04-17 | Oy Santasalo-Sohlberg Oy | Distilling apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1154663A (en) | 1997-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2158595C (en) | Condenser with drainage member for reducing the volume of liquid in the reservoir | |
| WO1992020419A1 (en) | Evaporator for liquid solutions | |
| US20020038760A1 (en) | Method and device for the production of pure steam | |
| CN1048909C (en) | Evaporator operating according to the falling film principle | |
| EP0828543B1 (en) | Horizontal tray and column for contacting gas and liquid | |
| US5139620A (en) | Dimple plate horizontal evaporator effects and method of use | |
| JPH04244202A (en) | Multi-flash evaporator using plate heat exchanger of irregular surface type | |
| US5624531A (en) | Evaporator operating on falling film principle | |
| NZ277615A (en) | Falling film evaporator: fluid distributor at top of each tube includes perforated plate and truncated cone | |
| US4852643A (en) | Vacuum condensor with condensate catch | |
| EP0414746B1 (en) | Selective condensation apparatus | |
| US4415407A (en) | Downflow evaporator | |
| CA2220596C (en) | Integral deaerator for a heat pipe steam condenser | |
| US5271753A (en) | Steam drying apparatus | |
| US4474141A (en) | Heat exchanger for cooling a hot gas | |
| US4558734A (en) | Heat exchanger having a set of pipes | |
| US3489650A (en) | Modular unit assembly for multi-stage flash distillation | |
| US20030061814A1 (en) | Deaeration of makeup water in a steam surface condenser | |
| JPS61287403A (en) | Multistage flash evaporator | |
| US3501382A (en) | Distillation-condenser with vertically disaligned tubes | |
| JPH08332331A (en) | Local air conditioner for heating, ventilation, and cooling | |
| WO1992020418A1 (en) | Method and apparatus for evaporation of liquid solutions | |
| SU1502922A1 (en) | Air-cooled condenser | |
| WO1998016685A1 (en) | Falling-film evaporator with horizontal tubes for evaporating waste liquid from pulp production | |
| SU1576488A1 (en) | Helioairlift unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: KERVENA POWER CO., LTD. Free format text: FORMER OWNER: KOWENNA PULP MFG. CO., LTD. Effective date: 20031112 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20031112 Patentee after: Kvenna dynamics Patentee before: Kowenna Pulp Mfg. Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140705 Granted publication date: 20000202 |