CN103007692B - Shell-and-pipe horizontal type liquid-film flip falling film absorption device - Google Patents
Shell-and-pipe horizontal type liquid-film flip falling film absorption device Download PDFInfo
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- CN103007692B CN103007692B CN201210558847.2A CN201210558847A CN103007692B CN 103007692 B CN103007692 B CN 103007692B CN 201210558847 A CN201210558847 A CN 201210558847A CN 103007692 B CN103007692 B CN 103007692B
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Abstract
The invention discloses a shell-and-pipe horizontal type liquid-film flip falling film absorption device. The device comprises a shell pass and falling film pipes located in the shell pass, wherein a solution inlet and a solution outlet are arranged on the shell pass. The device is characterized in that the falling film pipes are arranged in rows in the direction of the height, and two adjacent rows of the falling film pipes are arranged in a diverging manner in a horizontal direction; and three guide plates are arranged longitudinally on each falling film pipe, one guide plate is installed in the center horizontally at the top end of the falling film pipe, other two guide plates are installed symmetrically at the bottom of the falling film pipe, and the lower end of each guide plate is located on the upper surfaces of two adjacent falling film pipes in the lower low respectively. The shell-and-pipe horizontal type liquid-film flip falling film absorption device has the benefits that under the condition that device investment is not increased basically, the arrangement manner of the falling film pipe is changed, and the guide plates are installed additionally, so that the liquid film flip is achieved effectively, the gas absorption is enhanced, and the adsorption efficiency is improved; and the device is simple in structure and small in volume, and is an efficient and impact falling film absorber.
Description
Technical field
The present invention relates to the horizontal film upset of a kind of novel shell falling-film absorber, is a kind of heat and mass transfer enhancement device for sorption type refrigerating technology field, also can be for absorb other absorption technique processes of gas in corresponding chemical engineering industry with absorption liquid.
Background technology
At present, the falling-film absorber using in the industry such as refrigeration, air-conditioning and chemical industry is taking shell-and-tube spray falling liquid film form as main.In common shell-and-tube spray falling-film absorber, absorbent solution is sprayed in pipe by the tube bank surface of cooling medium by the dirty aperture of solution pallet, absorption liquid successively by upper comb line to lower comb bundle, it is dirty that liquid is liquid film along tube wall, the cooling medium passing through in pipe is for cooling liquid film, between pipe, be full of and be absorbed gas, gas is being absorbed into film when absorbent solution liquid film contacts on tube wall.
In absorption process, the gas and the absorption institute liberated heat that absorb due to solution film top layer will be transmitted to solution inside by liquid film top layer, therefore on the thickness direction of falling liquid film, formed thermograde and concentration gradient, liquid film surface layer temperature and concentration ratio higher.Known according to Hitman's double-film theory and matter diffusion ficks law, the motive force of the transport=diffusivity × transmission of certain constituent mass, in absorption process, component is pressure differential Pa-Pa by gas-migration to the motive force of liquid phase
*, wherein Pa is the partial pressure that is absorbed gas, Pa
*that the solution surface of answering with absorbent solution temperature, relative concentration is absorbed the saturated partial pressure of gas.Along with the carrying out of absorption process, solution temperature raises, and concentration rises, Pa
*also rise, absorption driving force reduces, and absorption process is obstructed thereupon.If liquid film can be overturn, make liquid film internal layer (being close to cooling tube surface one side) translate into top layer (side contacting with absorption gas) and just can effectively reduce temperature and the absorption strength on liquid film top layer, in the situation that substantially not increasing equipment investment, reduce Pa
*, strengthen absorption driving force, thereby improve assimilation effect.
Now also there is a kind of falling-film absorber of upset, its upper and lower same column layout of film supplying tube, the left side-turning of upper strata film supplying tube forwards the right side of lower floor's film supplying tube to.This structure has only been utilized half surface of film supplying tube, and assimilation effect is not high.
Summary of the invention
The deficiency existing in order to overcome existing shell-and-tube falling-film absorber, the present invention proposes the horizontal falling-film absorber of a kind of novel shell, by changing film supplying tube spread pattern and device deflector, realize the inside and outside upset of upper and lower two pipe liquid films, thereby improve GAS ABSORPTION rate.
For solving the problems of the technologies described above, concrete technical scheme of the present invention is:
The horizontal liquid film upset of a kind of shell falling film absorbing device, comprise shell side and be positioned at the film supplying tube of shell side, on described shell side, be provided with solution inlet port and taphole, it is characterized in that: described film supplying tube in short transverse in a row arrange, adjacent two row between film supplying tube diverge in the horizontal direction arrangement; Every film supplying tube is longitudinally upper arranges three deflectors, and wherein a deflector vertical center is arranged on film supplying tube top, and the lower end that other two deflector symmetries are arranged on film supplying tube bottom and two deflectors lays respectively at the upper surface of lower row's two adjacent film supplying tubes.
Described deflector is surface plate.
Film supplying tube of the present invention is staggered up and down, absorbent solution is dirty by pallet spray apertures, evenly be divided into both sides by the deflector on the superiors' film supplying tube dirty, the gas that is absorbed being full of between dirty liquid film outer surface and pipe absorbs heat release, and that liquid film inner surface and film supplying tube outer surface carry out heat exchange is cooling, liquid film Surface absorption heat is passed to mobile cooling medium in pipe by liquid film and tube wall, when the dirty absorbent solution in both sides outside pipe is turned to lower one deck film supplying tube through deflector, make upper strata be close to the cold inner surface upset of the liquid film of falling liquid film tube wall manage for lower floor outside dirty liquid film outer surface, and the outer surface upset of dirty liquid film heat is managed for being close to the dirty inner surface of lower floor's tube wall in upper strata, thereby make to absorb liquid film outside film supplying tube in dirty absorption process, carry out overturning inside and outside liquid film by means of this structure.By this periodic liquid film switching process, make inside and outside two liquid levels of liquid film alternately realize the upset contact being absorbed between gas and cooling wall, thus the caloic transmittance process that strengthening absorbs.
The invention has the beneficial effects as follows: substantially do not increasing in equipment investment situation, by changing film supplying tube spread pattern and installing deflector additional, effectively realizing liquid film upset, strengthening GAS ABSORPTION, improves absorption efficiency, and simple in structure, volume is little.It is a kind of falling-film absorber of novel high-efficiency compact.
Brief description of the drawings
Fig. 1 is the structural representation of absorption plant of the present invention.
Fig. 2 is the A-A face cutaway view of Fig. 1.
Fig. 3 is the liquid film upset schematic diagram of absorption plant of the present invention.
In the drawings, 1 is film supplying tube, and 2 is deflector, and 3 is pallet, 4, solution inlet port, 5, taphole, 6, cooling medium inlet, 7, cooling medium outlet.
Detailed description of the invention
As shown in Figure 1, the horizontal liquid film upset of shell of the present invention falling film absorbing device, comprises shell side and the film supplying tube 1 that is positioned at shell side, is provided with solution inlet port 4 and taphole 5 on shell side, pallet 3 is installed in solution inlet port 4, and film supplying tube 1 is positioned at below pallet 3.Shown in Fig. 2, Fig. 3, film supplying tube 1 is facing fork arrangement between row, longitudinally three deflectors 2 of upper layout of every film supplying tube, a vertical center is arranged on film supplying tube 1 top, other two symmetries are arranged on film supplying tube 1 bottom, vertical deflection certain angle separately, this angle determines by diameter, tube pitch and the deflector length equidimension of film supplying tube, taking guide absorbent solution downstream near lower comb apical position as good.
Claims (3)
1. the horizontal liquid film upset of a shell falling film absorbing device, comprise shell side and be positioned at the film supplying tube of shell side, on described shell side, be provided with solution inlet port and taphole, it is characterized in that: described film supplying tube in short transverse in a row arrange, adjacent two row between film supplying tube diverge in the horizontal direction arrangement; Every film supplying tube is longitudinally upper arranges three deflectors, and wherein a deflector vertical center is arranged on film supplying tube top, and the lower end that other two deflector symmetries are arranged on film supplying tube bottom and two deflectors lays respectively at the upper surface of lower row's two adjacent film supplying tubes.
2. the horizontal liquid film upset of shell according to claim 1 falling film absorbing device, is characterized in that: described deflector is surface plate.
3. the horizontal liquid film upset of shell according to claim 1 falling film absorbing device, is characterized in that: in described shell side, be provided with pallet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558847.2A CN103007692B (en) | 2012-12-21 | 2012-12-21 | Shell-and-pipe horizontal type liquid-film flip falling film absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558847.2A CN103007692B (en) | 2012-12-21 | 2012-12-21 | Shell-and-pipe horizontal type liquid-film flip falling film absorption device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103007692A CN103007692A (en) | 2013-04-03 |
| CN103007692B true CN103007692B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210558847.2A Expired - Fee Related CN103007692B (en) | 2012-12-21 | 2012-12-21 | Shell-and-pipe horizontal type liquid-film flip falling film absorption device |
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| CN (1) | CN103007692B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983047B (en) * | 2014-05-21 | 2016-01-13 | 东南大学 | A kind of two-way from the board-like falling film absorbing device of disturbance |
| CN105413395B (en) * | 2015-09-21 | 2017-10-31 | 中石化节能环保工程科技有限公司 | Gas absorbs falling film reactor |
| CN112944749A (en) * | 2019-12-10 | 2021-06-11 | 珠海格力电器股份有限公司 | Liquid distributor assembly, falling film type heat exchanger and air conditioner |
| CN114504931B (en) * | 2020-11-16 | 2023-06-13 | 中国石油化工股份有限公司 | Hydrogen sulfide absorbing device and absorbing method |
| CN113137786A (en) * | 2021-05-31 | 2021-07-20 | 西安建筑科技大学 | Membrane tube bank falling film evaporation tube bundle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03296413A (en) * | 1990-04-13 | 1991-12-27 | Mitsubishi Heavy Ind Ltd | Polar gas separating device |
| AU2003259015A1 (en) * | 2002-08-21 | 2004-03-11 | National University Of Singapore | Falling film vapor absorber, cooling system, and method |
| CN1273784C (en) * | 2004-03-24 | 2006-09-06 | 上海理工大学 | Membrane inversion board type falling film absorbing device |
| CN100498192C (en) * | 2007-04-27 | 2009-06-10 | 东南大学 | Two-sided liquid film reversal intercrossing double-dimension corrugated board absorber heat exchanging elements |
| JP4827828B2 (en) * | 2007-12-07 | 2011-11-30 | ダイダン株式会社 | Method and apparatus for removing gas impurities |
| US8349056B2 (en) * | 2009-07-15 | 2013-01-08 | General Electric Company | System and method for reduction of moisture content in flue gas |
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- 2012-12-21 CN CN201210558847.2A patent/CN103007692B/en not_active Expired - Fee Related
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| CN103007692A (en) | 2013-04-03 |
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Granted publication date: 20140806 Termination date: 20161221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |