CN201978515U - Energy-saving falling film evaporator for dimpled plate - Google Patents
Energy-saving falling film evaporator for dimpled plate Download PDFInfo
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- CN201978515U CN201978515U CN2011200624632U CN201120062463U CN201978515U CN 201978515 U CN201978515 U CN 201978515U CN 2011200624632 U CN2011200624632 U CN 2011200624632U CN 201120062463 U CN201120062463 U CN 201120062463U CN 201978515 U CN201978515 U CN 201978515U
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Abstract
An energy-saving falling film evaporator for a dimpled plate comprises an evaporator barrel body (10) and a dimpled plate heat exchanger (40) arranged in the evaporator barrel body (10), wherein the evaporator barrel body (10) is provided with a first steam inlet (24) and a steam outlet (25); the first steam inlet (24) and the steam outlet (25) are communicated through a steam pipeline; and a compressor (22) for generating circulating steam is arranged on the steam pipeline. The heat energy in the evaporation process can be recycled by the evaporator which only consumes less electric energy and does not need the steam, and the environment-friendly and energy-saving effects can be achieved. The energy-saving falling film evaporator is especially applicable to the evaporation and concentration process without a steam source as well as the evaporation and concentration of heat sensitive materials.
Description
Technical field
The utility model relates to physical method evaporation, concentrated liquid or the vaporising device of separate solid material therefrom, relate in particular to a kind of dimple plate falling film evaporator, particularly relate to the energy-saving dimple plate falling film evaporator that adopts mechanical type indirect steam recompression evaporation technique.
Background technology
Prior art dimple plate falling film evaporator utilizes the liquid distributor on dimple sheet heat exchanger top that liquid material is evenly distributed in dimple heat exchange group plate outer surface, relies on material gravity along dimple heat exchange group plate flow downwards.Be compressed the bright steam of feeding of intensification at dimple heat exchange group plate inner chamber, bright steam discharges latent heat by the wooden partition conduction, is cooled to condensed water subsequently.The outer material film absorption heat of vaporization of dimple heat exchange group plate produces indirect steam and overflows around between the dimple heat exchange group plate.Because the indirect steam passage is unobstructed, the indirect steam that film surface produces overflows smoothly, and resistance is very little, and the temperature difference loss of generation is also very little.Liquid is discharged downwards, and indirect steam mainly overflows from dimple heat exchange group plate both sides, has reduced indirect steam and has carried the spittle secretly.If liquid distributor is reasonable in design, can not establish the vapour-liquid separator.Material is in dimple heat exchange group plate surface flows downward evaporation process with filminess, liquid constantly exchanges renewal at heat exchange surface in the film, simultaneously constantly stretch, shrink on scraggly surface, these phenomenons all increase substantially heat exchange efficiency, accelerate evaporation rate, make material in the very short time, finish evaporation process.Dimple plate falling film evaporator heat exchange efficiency height, heat transfer temperature difference is little, and temperature difference loss is little, is one of present state-of-the-art evaporimeter, is more suitable in temperature sensitive material, prevents that heat sensitive material is overheated in evaporation process.
Prior art mechanical type indirect steam recompression MVR evaporimeter is to utilize heat pump principle, with mechanical commprssor the indirect steam of evaporimeter is compressed, and makes it temperature and raises above heat transfer temperature difference, and compression back steam uses as the heating steam of this evaporimeter.Make double evaporation-cooling heat energy recycling, continuous evaporation.As long as provide small amount of electrical energy just can make heat energy recycling, evaporimeter continuous operation, the MVR technology is changed the routine that evaporimeter uses steam, is a kind of advanced person's environmental protection and energy saving technology.MVR evaporimeter and electric evaporator have essential distinction, and electric evaporator is to be converted into heat energy with electric energy, with electrical heating conduction oil or heating water generates steam, make thermal source with conduction oil or steam again and supply with evaporator operation.The heat energy in the evaporimeter is just carried in the MVR electricity consumption, and the Motor Drive compressor heats up the back to the indirect steam compression that contains heat energy as the evaporimeter thermal source.Compressed steam is emitted latent heat during the heat exchange condensation in evaporimeter, material absorbs heat of vaporization and produces indirect steam, and indirect steam is compressed again, and heat energy constantly circulates.The effect of compressor is the steam conveying and boosts.Therefore the MVR evaporimeter does not need to build steam boiler, and power consumption is according to one ton of water power consumption of the every evaporation of material characteristic, 30～120kWh, and the evaporation cost reduces several times than steam raising, and is particularly evident when particularly requiring low-temperature evaporation.
In sum, the dimple plate falling film evaporator heat exchange efficiency height of prior art, heat transfer temperature difference is little, more the evaporation and concentration of applied heat sensitive materials; The MVR evaporimeter of prior art is changed the routine that evaporimeter uses steam, as long as provide small amount of electrical energy just can make heat energy recycling, evaporimeter continuous operation, is a kind of advanced person's environmental protection and energy saving evaporimeter.Do not find as yet at present the evaporimeter product that above-mentioned dimple plate falling film evaporator and the two function of MVR technology combine is come out.
The utility model content
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of energy-conservation dimple plate falling film evaporator that mechanical type indirect steam recompression MVR technology is applied to dimple plate falling film evaporator is provided.
The technical scheme that the utility model solve the technical problem employing is: a kind of energy-conservation dimple plate falling film evaporator is provided, comprise the evaporimeter staving and be installed on the interior dimple sheet heat exchanger of this evaporimeter staving, described evaporimeter staving is provided with first steam inlet and steam (vapor) outlet; Described dimple sheet heat exchanger comprises the polylith dimple heat exchange group plate that composes in parallel, every block of dimple heat exchange group plate comprise again two spot-welded together and form the dimple plate of cavity each other; Described dimple heat exchange group plate is provided with second steam inlet and second condensation-water drain; Especially, described first steam inlet and steam (vapor) outlet are connected by jet chimney, and on this jet chimney the compressor that is used to produce cyclic steam are installed.
Described compressor comprises a lobed rotor compressor or 1-2 platform centrifugal compressor or high pressure positive blower.
Close on steam outlet the vapour-liquid separator is installed.
The top of described dimple sheet heat exchanger is equipped with liquid distributor.
The intracavity bottom of described evaporimeter staving is provided with condensed water storage tank and concentrate storage tank.
The dimple plate of described formation cavity, the distance between plates in cavity is from being 20～40mm.
Punching press forms a plurality of equally distributed dimples hole on the described dimple plate, and two adjacent dimple hole spacings are 200～300mm.
Described dimple plate is stamped and forms crooked edges of boards, and forms described second steam inlet and described second condensation-water drain simultaneously.
Compare with prior art, the beneficial effect of the energy-conservation dimple plate of the utility model falling film evaporator is: mechanical steam recompression (MVR) evaporimeter is advanced energy-saving evaporator, and wherein the compressor power consumption accounts for 70～90% of the total power consumption of vapo(u)rization system; The evaporimeter that must adopt water-heat transfer water to have a narrow range of temperature for the power consumption that reduces the MVR evaporimeter, and dimple plate falling film evaporator is the also minimum evaporimeter of water-heat transfer water temperature difference minimum, temperature difference loss.Therefore, the utility model combines two advanced persons' evaporation technique, gives full play to the advantage of two technology, makes MVR technology environmental protection energy-saving effect more obvious.
The utility model makes evaporimeter not need to add steam only consuming the heat energy recycling that small amount of electrical energy just can make evaporation process, reach the effect of environmental protection and energy saving, is particularly useful for not having the evaporation and concentration of the evaporating concentration process and the heat sensitivity material of vapour source.
Description of drawings
Fig. 1 is the structural representation of the energy-conservation dimple plate of the utility model falling film evaporator;
Fig. 2 is the A-A broken section structural representation of Fig. 1;
Fig. 3 is the B-B broken section structural representation of Fig. 1;
Fig. 4 is the partial structurtes schematic diagram of 41 1 jiaos of the dimple heat exchange group plates of described dimple plate falling film evaporator;
Fig. 5 is the C-C sectional structure schematic diagram of Fig. 4.
The specific embodiment
Below in conjunction with each accompanying drawing the utility model is described in further detail.
Referring to figs. 1 through shown in Figure 5, a kind of energy-conservation dimple plate falling film evaporator comprises evaporimeter staving 10 and is installed on dimple sheet heat exchanger 40 in this evaporimeter staving 10 that described evaporimeter staving 10 is provided with first steam inlet 24 and steam (vapor) outlet 25; Described dimple sheet heat exchanger 40 comprises the polylith dimple heat exchange group plate 41 that composes in parallel, every block of dimple heat exchange group plate 41 comprise again two spot-welded together and form the dimple plate 42 of cavity each other; Described dimple heat exchange group plate 41 is provided with second steam inlet 46 and second condensation-water drain 45; Described first steam inlet 24 and steam (vapor) outlet 25 are connected by jet chimney, and the compressor 22 that is used to produce cyclic steam is installed on this jet chimney.
Close on steam (vapor) outlet 25 places vapour-liquid separator 28 is installed.Vapour liquid separator 28 is provided with tangential entry 27 and central outlet 20.
The top of described dimple sheet heat exchanger 40 is equipped with liquid distributor 17.
The intracavity bottom of described evaporimeter staving 10 is provided with condensed water storage tank 11 and concentrate storage tank 12.The utility model adopts heat exchanger, concentrated liquid bath, the design of condensate draining one, has further simplified device structure, has reduced floor space.
The dimple plate 42 of described formation cavity, the distance between plates in cavity is from being 20～40mm.
Punching press forms a plurality of equally distributed dimples hole 43 on the described dimple plate 42, and two adjacent dimples to cheat 43 spacings be 200～300mm.
Described dimple plate 42 is stamped and forms crooked edges of boards 48, and forms described second steam inlet 46 and described second condensation-water drain 45 simultaneously.
With reference to shown in Figure 1, the utility model also comprises steam-distribution plate 44, journal stirrup 14, the first condensation-water drains 16 and not condensing outlet 9,29 expression indirect steam paths among the figure.
Prior art dimple plate falling film evaporator is made up of evaporimeter staving 10, concentrate storage tank 12, liquid distributor 17, end socket, dimple sheet heat exchanger 40.Dimple sheet heat exchanger 40 is made up of polylith dimple plate 42.Dimple plate 42 is soldering and sealing around two thin plates, and at a certain distance with the rounded projections arranged spot welding point.Fill water under high pressure then it is filled the heat exchanger plates that rises into by distance between plates 10～30mm, the plate face forms dimple shape fulcrum and pit with the spot welding point of rounded projections arranged at a certain distance, leaves air intake and condensate drain outlet 48 ones of heat exchange edges of boards again.
Prior art dimple plate falling film evaporator adapts to the Steam Heating of elevated pressures, and mechanical vapour recompression MVR evaporimeter heating steam pressure is less, pressure differential is directly proportional with the unit power consumption amount of one ton of water of every evaporation, in order to adapt to the characteristics requirement of MVR evaporimeter, the utility model dimple sheet heat exchanger 40 distances between plates are from arriving 20-30mm greatly, because compressive resistance requires to reduce, can adopt thinner sheet material processing.Work in-process dimple hole 3 distances increase to 200-300mm, and the utility model should not adopt a postwelding hydraulic pressure to contract to fill the technology that rises, and adopts the dimple punch forming process, promptly stamps out dimple hole 43 with the film tool, with rolled-on method bending edges of boards 48.When rolling crooked edges of boards 48, reserve air intake and condensation-water drain, then with 2 dimple plates to the dimple heat exchanger plates 42 that becomes welded together, at last air intake and condensation-water drain are carried out shaping.Air intake with polylith dimple plate 42 is welded on the steam-distribution plate of steam distribution case then, and condensation-water drain is welded on the condensation water tank collection board.After this just can be installed in dimple sheet heat exchanger 40 and constitute dimple plate evaporimeter in the evaporimeter staving 10.
The utility model is optimized dimple sheet heat exchanger 40 at MVR evaporimeter characteristic, adapts to low differential pressure steam heat exchange requirement, not only the solution side temperature difference loss is reduced to minimumly, also will be reduced to minimum to steam side pressure reduction; Further reduced the resistance that steam flows, made evaporator evaporation efficient higher, energy-saving effect is better.
The utility model evaporimeter raw material is transported in the plate type heat exchanger through feedstock pump, and with the condensed water heat exchange that evaporimeter produces, the heat that reclaims in the condensed water arrives near evaporating temperature raw material preheating.Enter liquid distributor 17 through the material after the preheating from material inlet 18, liquid distributor 17 is distributed to liquid material uniformly and makes the liquid material formation layer of even liquid film that flows from the top down along dimple plate 42 surfaces above the every dimple plate 42.In the dimple plate 42 heating steam through compressor 22 compressions, heating steam generally than the boiling temperature of material high 5 °～10 ℃, this temperature difference makes the heat of heating steam pass to the liquid material film smoothly by dimple plate 42, material absorbs heat of vaporization generation indirect steam and overflows from liquid film, the indirect steam that dimple plate 42 surfaces produce outflow together to the cylindrical shell middle part of dimple sheet heat exchanger 40 from the gap of dimple plate 42, enter vapour-liquid separator 28 by venthole, the liquid film on dimple plate 42 surfaces continuous evaporation and concentration when flowing downward, finally flow to dimple plate 42 bottoms, drop onto concentrate storage tank 12.Concentrate is discharged to outside the evaporator system with concentrate pump.Indirect steam is from tangentially entering vapour liquid separator 18, under the action of the centrifugal, be attached to by the drop of entrainment with steam and flow to separator bottom on the separator inwall, the steam rotation is risen and is got rid of from steam outlet pipe, vapour liquid separator 28 separates droplets entrained in the steam to be removed, and clean indirect steam enters compressor 22.Indirect steam is compressed, pressure rising 60～500mba, temperature raises 5 °～20 ℃ becomes heating steam, heating steam enters the steam distribution case by pipeline 24 and steam is distributed to uniformly in the cavity of each dimple plate 42, heating steam in dimple plate 42 cavitys with the liquid material film heat exchange on dimple plate 42 surfaces, the latent heat of steam is passed to material make the material evaporation, entering steam itself is condensed into condensed water and flows downward to compile from end opening at last from dimple plate 42 cavity inner walls and be drained into the condensation water tank 11, condensed water is extracted out with condensate pump, deliver to plate type heat exchanger and raw material heat exchange, reclaim heat and make the material preheating, condensed water is cooled to the following evaporator system of getting rid of of 40 degree.
The compressor power consumption accounts for 90% of the total power consumption of vapo(u)rization system in the MVR evaporimeter.The compressor power consumption is directly proportional with the difference of gateway pressure, and compressor pressure reduction is converted into the compression temperature difference and is greater than and equals heat transfer temperature difference.Heat transfer temperature difference is the material elevation of boiling point, evaporator water heat transfer temperature difference and because the summation of the temperature difference loss that steam resistance produces.Wherein the elevation of boiling point of material is the material self character, under certain elevation of boiling point temperature, selects the evaporimeter type to make evaporimeter heat transfer temperature difference minimum.The utility model evaporimeter is at energy-conservation evaporation technique---the unit power consumption and the proportional characteristics of heat transfer temperature difference of mechanical steam recompression evaporimeter (being called for short MVR), in order further to lower the compressor power consumption, adopt heat transfer water temperature difference minimum, temperature difference loss minimum, the minimum dimple plate downward film evaporator of the dirt influence superior environment-friendly and energy-efficient dimple plate falling liquid film MVR evaporimeter of component property that combines with energy-conservation evaporation technique MVR through the heat transfer temperature difference characteristic of various evaporimeters being studied relatively the back.
The above embodiment has only been expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model; Therefore, all equivalents and modifications of being done with the utility model claim scope all should belong to the covering scope of the utility model claim.
Claims (8)
1. an energy-conservation dimple plate falling film evaporator comprises evaporimeter staving (10) and is installed on the interior dimple sheet heat exchanger (40) of this evaporimeter staving (10), and described evaporimeter staving (10) is provided with first steam inlet (24) and steam (vapor) outlet (25); Described dimple sheet heat exchanger (40) comprises the polylith dimple heat exchange group plate (41) that composes in parallel, every block of dimple heat exchange group plate (41) comprise again two spot-welded together and form the dimple plate (42) of cavity each other; Described dimple heat exchange group plate (41) is provided with second steam inlet (46) and second condensation-water drain (45); It is characterized in that:
Described first steam inlet (24) and steam (vapor) outlet (25) are connected by jet chimney, and the compressor (22) that is used to produce cyclic steam is installed on this jet chimney.
2. evaporimeter as claimed in claim 1 is characterized in that: described compressor comprises a lobed rotor compressor or 1-2 platform centrifugal compressor or high pressure positive blower.
3. evaporimeter as claimed in claim 1 is characterized in that: close on steam (vapor) outlet (25) and locate to be equipped with vapour-liquid separator (28).
4. evaporimeter as claimed in claim 1 is characterized in that: the top of described dimple sheet heat exchanger (40) is equipped with liquid distributor (17).
5. evaporimeter as claimed in claim 1 is characterized in that: the intracavity bottom of described evaporimeter staving (10) is provided with condensed water storage tank (11) and concentrate storage tank (12).
6. evaporimeter as claimed in claim 1 is characterized in that: the dimple plate (42) of described formation cavity, the distance between plates in cavity is from being 20～40mm.
7. evaporimeter as claimed in claim 1 is characterized in that: described dimple plate (42) is gone up punching press and is formed a plurality of equally distributed dimple holes (43), and two adjacent dimple hole (43) spacings are 200～300mm.
8. evaporimeter as claimed in claim 1 is characterized in that: described dimple plate (42) is stamped and forms crooked edges of boards (48), and forms described second steam inlet (46) and described second condensation-water drain (45) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200624632U CN201978515U (en) | 2010-05-10 | 2011-03-02 | Energy-saving falling film evaporator for dimpled plate |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020191838 | 2010-05-10 | ||
| CN201020191838.0 | 2010-05-10 | ||
| CN2011200624632U CN201978515U (en) | 2010-05-10 | 2011-03-02 | Energy-saving falling film evaporator for dimpled plate |
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| Publication Number | Publication Date |
|---|---|
| CN201978515U true CN201978515U (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200624632U Expired - Fee Related CN201978515U (en) | 2010-05-10 | 2011-03-02 | Energy-saving falling film evaporator for dimpled plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393151A (en) * | 2011-09-28 | 2012-03-28 | 温州市宇达轻工机械有限公司 | Novel lifting film plate type evaporator |
| CN105233514A (en) * | 2015-11-10 | 2016-01-13 | 安徽国孚润滑油工业有限公司 | Film evaporator based on separate heat tubes and using method thereof |
| CN109157858A (en) * | 2018-09-27 | 2019-01-08 | 天津科技大学 | Multisection type plate-type down-film evaporator heat-exchanger rig |
| CN109442534A (en) * | 2018-09-26 | 2019-03-08 | 全球能源互联网研究院有限公司 | A kind of high-temperature phase-change solid heat accumulation integral type heat exchange heating system |
| CN109578962A (en) * | 2018-11-21 | 2019-04-05 | 中国航发西安动力控制科技有限公司 | A kind of evaporator |
-
2011
- 2011-03-02 CN CN2011200624632U patent/CN201978515U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393151A (en) * | 2011-09-28 | 2012-03-28 | 温州市宇达轻工机械有限公司 | Novel lifting film plate type evaporator |
| CN105233514A (en) * | 2015-11-10 | 2016-01-13 | 安徽国孚润滑油工业有限公司 | Film evaporator based on separate heat tubes and using method thereof |
| CN105233514B (en) * | 2015-11-10 | 2017-10-24 | 李书龙 | A kind of thin film evaporator and its application method based on separate heat pipe |
| CN109442534A (en) * | 2018-09-26 | 2019-03-08 | 全球能源互联网研究院有限公司 | A kind of high-temperature phase-change solid heat accumulation integral type heat exchange heating system |
| CN109157858A (en) * | 2018-09-27 | 2019-01-08 | 天津科技大学 | Multisection type plate-type down-film evaporator heat-exchanger rig |
| CN109578962A (en) * | 2018-11-21 | 2019-04-05 | 中国航发西安动力控制科技有限公司 | A kind of evaporator |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20130302 |