CN103007692A - 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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- CN103007692A CN103007692A CN2012105588472A CN201210558847A CN103007692A CN 103007692 A CN103007692 A CN 103007692A CN 2012105588472 A CN2012105588472 A CN 2012105588472A CN 201210558847 A CN201210558847 A CN 201210558847A CN 103007692 A CN103007692 A CN 103007692A
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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 the sorption type refrigerating technology field, also can be used for other absorption technique processes that corresponding chemical engineering industry is used the absorption liquid absorption of gases.
Background technology
At present, employed falling-film absorber sprays the falling liquid film form as main take shell-and-tube in the industries such as refrigeration, air-conditioning and chemical industry.In common shell-and-tube spray falling-film absorber, absorbent solution is sprayed in the pipe by on 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 that passes through in the pipe is used for the cooling liquid film, be full of between pipe and be absorbed gas, gas is absorbed into film when contacting with absorbent solution liquid film on the tube wall.
In absorption process, because the gas that the solution film top layer absorbs and absorption institute liberated heat will pass to solution inner by the liquid film top layer, therefore on the thickness direction of falling liquid film, formed thermograde and concentration gradient, the liquid film surface layer temperature and concentration ratio higher.According to Hitman's double-film theory and matter diffusion ficks law as can be known, the motive force of the transport=diffusivity of certain constituent mass * transmission, component is pressure differential by gas-migration to the motive force of liquid phase in the absorption process
Pa-Pa * , wherein
PaThe 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, so that 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 that contacts with absorption of gases) and just can effectively reduce temperature and the absorption strength on liquid film top layer, substantially do not increasing in the situation of equipment investment, reduce
Pa * , strengthen absorption driving force, thereby improve assimilation effect.
The falling-film absorber that a kind of upset is now also arranged, its film supplying tube up and down same column arrange that 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 that exists 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 up and down inside and outside upset of two pipe liquid films, thereby improve the 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, the film supplying tube that comprises shell side and be positioned at shell side, be provided with solution inlet port and taphole at described shell side, it is characterized in that: described film supplying tube arranges in a row that on short transverse the film supplying tube between adjacent two rows is diverged arrangement in the horizontal direction; Every film supplying tube is vertically upper arranges three deflectors, and wherein a deflector vertical center is installed in the film supplying tube top, and the lower end that other two deflector symmetries are installed in 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 the pallet spray apertures, it is dirty evenly to be divided into both sides by the deflector on the superiors' film supplying tube, the gas that is absorbed that is full of between dirty liquid film outer surface and pipe absorbs heat release, and liquid film inner surface and film supplying tube outer surface carry out the heat exchange cooling, liquid film Surface absorption heat is passed to the cooling medium that flows in the pipe by liquid film and tube wall, the dirty absorbent solution in both sides is turned to lower one deck film supplying tube through deflector outside pipe, make the 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 the upper strata, thereby make the absorption liquid film outside film supplying tube, in the dirty absorption process, carry out overturning inside and outside the liquid film by means of this structure.By this periodic liquid film switching process, make inside and outside two liquid levels of liquid film realize that alternately the upset that is absorbed between gas and the cooling wall contacts, thereby strengthen the caloic transmittance process that absorbs.
The invention has the beneficial effects as follows: substantially do not increasing in the equipment investment situation, by changing the film supplying tube spread pattern and installing deflector additional, effectively realizing the liquid film upset, strengthening GAS ABSORPTION, improving absorption efficiency, simple in structure, volume is little.It is a kind of falling-film absorber of novel high-efficiency compact.
Description of 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, the cooling medium outlet.
The specific embodiment
By shown in Figure 1, the horizontal liquid film of shell of the present invention upset falling film absorbing device comprises shell side and is positioned at the film supplying tube 1 of shell side, is provided with solution inlet port 4 and taphole 5 at shell side, advance pallet 3 is installed in 4 mouthfuls at solution, film supplying tube 1 be positioned at pallet 3 below.At Fig. 2, shown in Figure 3, film supplying tube 1 is facing fork arrangement between the row, every film supplying tube is vertically upward arranged three deflectors 2, a vertical center is installed in film supplying tube 1 top, other two symmetries are installed in film supplying tube 1 bottom, vertical deflection certain angle separately, this angle determine by diameter, tube pitch and the deflector length equidimension of film supplying tube, take guiding absorbent solution downstream near lower comb apical position as good.
Claims (3)
1. the horizontal liquid film upset of shell falling film absorbing device, the film supplying tube that comprises shell side and be positioned at shell side, be provided with solution inlet port and taphole at described shell side, it is characterized in that: described film supplying tube arranges in a row that on short transverse the film supplying tube between adjacent two rows is diverged arrangement in the horizontal direction; Every film supplying tube is vertically upper arranges three deflectors, and wherein a deflector vertical center is installed in the film supplying tube top, and the lower end that other two deflector symmetries are installed in 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 of shell according to claim 1 upset falling film absorbing device, it 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: be provided with pallet in described shell side.
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 true CN103007692A (en) | 2013-04-03 |
| CN103007692B CN103007692B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983047A (en) * | 2014-05-21 | 2014-08-13 | 东南大学 | Bidirectional self-disturbance plate type falling film absorption device |
| CN105413395A (en) * | 2015-09-21 | 2016-03-23 | 中石化节能环保工程科技有限公司 | Gas absorption 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 |
| CN113137786A (en) * | 2021-05-31 | 2021-07-20 | 西安建筑科技大学 | Membrane tube bank falling film evaporation tube bundle |
| CN114504931A (en) * | 2020-11-16 | 2022-05-17 | 中国石油化工股份有限公司 | Hydrogen sulfide absorption device and absorption method |
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| EP0451715A1 (en) * | 1990-04-13 | 1991-10-16 | Mitsubishi Jukogyo Kabushiki Kaisha | Apparatus for separating polar gases |
| WO2004018950A1 (en) * | 2002-08-21 | 2004-03-04 | National University Of Singapore | Falling film vapor absorber, cooling system, and method |
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| JP2009136806A (en) * | 2007-12-07 | 2009-06-25 | Dai-Dan Co Ltd | Gas impurity removing method and apparatus |
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- 2012-12-21 CN CN201210558847.2A patent/CN103007692B/en not_active Expired - Fee Related
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| EP0451715A1 (en) * | 1990-04-13 | 1991-10-16 | Mitsubishi Jukogyo Kabushiki Kaisha | Apparatus for separating polar gases |
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| MD.RAISUL ISLAM ET AL.: "Performance study of a falling-film absorber with a film-inverting configuration", 《INTERNATIONAL JOURNAL OF REFRIGERATION》 * |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983047A (en) * | 2014-05-21 | 2014-08-13 | 东南大学 | Bidirectional self-disturbance plate type falling film absorption device |
| 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 |
| CN105413395A (en) * | 2015-09-21 | 2016-03-23 | 中石化节能环保工程科技有限公司 | Gas absorption falling film reactor |
| 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 |
| CN114504931A (en) * | 2020-11-16 | 2022-05-17 | 中国石油化工股份有限公司 | Hydrogen sulfide absorption device and absorption method |
| 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 |
Also Published As
| Publication number | Publication date |
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| CN103007692B (en) | 2014-08-06 |
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Granted publication date: 20140806 Termination date: 20161221 |