CN104548651A - Industrial grade energy-saving and water-saving type MVR (mechanical vapor recompression) continuous evaporative crystallization system - Google Patents
Industrial grade energy-saving and water-saving type MVR (mechanical vapor recompression) continuous evaporative crystallization system Download PDFInfo
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- 238000002425 crystallisation Methods 0.000 title claims abstract description 48
- 230000008025 crystallization Effects 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 239000000498 cooling water Substances 0.000 claims abstract description 49
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 63
- 230000009194 climbing Effects 0.000 claims description 40
- 239000013078 crystal Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000003020 moisturizing effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000001502 supplementing effect Effects 0.000 abstract 3
- 238000001704 evaporation Methods 0.000 description 23
- 230000008020 evaporation Effects 0.000 description 22
- 230000006835 compression Effects 0.000 description 20
- 238000007906 compression Methods 0.000 description 20
- 238000004134 energy conservation Methods 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000008258 liquid foam Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention relates to an industrial grade energy-saving and water-saving type MVR (mechanical vapor recompression) continuous evaporative crystallization system. The industrial grade energy-saving and water-saving type MVR (mechanical vapor recompression) continuous evaporative crystallization system comprises a raw material inlet, a water supplementing inlet, a preheater, a film-rising evaporator, a gas-liquid separator, a compressor, a pipeline heater and a crystallization separator, wherein an inlet, a first outlet, a second outlet and a third outlet are formed in the gas-liquid separator, the preheater is connected with the film-rising evaporator by a pipeline, the film-rising evaporator is connected with the inlet of the gas-liquid separator, the compressor is connected between the gas-liquid separator and the film-rising evaporator by a steam conveying pipeline, a circulation evaporator is connected between the second outlet and the inlet by a pipeline, cooling water after heat exchange in the film-rising evaporator and cooling water after heat exchange in the circulation evaporator are used as heat sources of the preheater, the cooling water is fed into the preheater, the cooling water output end of the preheater and the water supplementing inlet are used for commonly supplementing water for the system; and the crystallization separator is connected with the first outlet in the gas-liquid separator. The system has low cost, is water-saving, energy-saving and raw material-saving, and has a good crystallization effect.
Description
Technical field
The present invention relates to a kind of with energy-conservation and technical grade MVR continuous evaporative crystallization system that is water-saving result.
Background technology
Function of mechanical steam recompression Mechanical Vapor Recompression technology is a kind of high-efficient energy-saving environment friendly technology, is called for short MVR.Although disclose a lot of MVR continuous evaporative crystallization system adopting mechanical vapor recompression technology in prior art, just do not seem in the application of technical grade many.
Unreasonable due to technological design, a lot of function of mechanical steam recompression continuous evaporative crystallization system generally only has single-stage vapor compression machine to the heat supply of evaporimeter, in crystallizer part, material does not still carry out a large amount of heat supplies, cause the crystallization effect of existing function of mechanical steam recompression continuous evaporative crystallization system bad, the problem such as grain size number is tiny as occurred.Certainly, also there is part producer can increase jet chimney with supplementary crystalline portion heat supply, but considerably increase the complexity of MVR system, and rely on steam boiler, make MVR system without its original significant advantage-break away from dependence to steam boiler.
For these problems, publication number is disclose a kind of function of mechanical steam recompression continuous evaporative crystallization system of solving the problem and method in CN103203116A Chinese invention patent application prospectus, this function of mechanical steam recompression continuous evaporative crystallization system have employed two Mechanical Vapor Compression, and two compressors are respectively to evaporimeter and crystallizer heat supply, also one-level recovery has been carried out to cooling water sensible heat, for preheating, but this continuous evaporative crystallization system have employed two Mechanical Vapor Compression, the equipment cost buying two Mechanical Vapor Compression is very high, and do not have rational structure to be heated to bubble point temperature to material in advance, the energy consumption of therefore starting two compressors is also very high, structure is numerous and diverse, cause energy-saving effect also unsatisfactory.
In addition, existing MVR continuous evaporative crystallization system is except energy-conservation, recycling of few consideration water route, cause existing MVR continuous evaporative crystallization system continuous flow procedure can discharge many cooling waters, not only rationally do not recycle the heat energy of cooling water, prevent the pollution of cooling water, and new needs steam new in a large number fills into, waste water resource.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of rational technology, and cost is low, and raw material is without waste, and continuity is good, and with better energy-conservation and technical grade MVR continuous evaporative crystallization system that is water-saving result.
In order to realize foregoing invention object, present invention employs following technical scheme:
A kind of technical grade energy-saving and water-saving type MVR continuous evaporative crystallization system, described system comprises feed(raw material)inlet, moisturizing entrance, preheater, climbing film evaporator, gas-liquid separator, function of mechanical steam recompression machine, forced-circulation evaporator, pipeline heater and a crystal separator; Described preheater, climbing film evaporator and forced-circulation evaporator are all heat exchange units; Its include be connected material input, material output and the thermal source input be connected, cooling water output; Described gas-liquid separator comprise entrance for sending into gas-liquid mixed material, for export steam the first outlet, for feed liquid forced circulation the second outlet and send the 3rd outlet of crystallization for feed liquid; Described feed(raw material)inlet connects the material input of preheater by pipeline, and the material output of preheater connects the material input of climbing film evaporator by pipeline, the material output of climbing film evaporator connects the entrance of gas-liquid separator; Described function of mechanical steam recompression machine is connected between the first outlet of gas-liquid separator and the thermal source input of climbing film evaporator by steam conveying pipe, vapour pressure in order to be exported by described gas-liquid separator shortens superheated steam into and sends into climbing film evaporator, rises film heat to realize material; The material input of described forced-circulation evaporator connects the second outlet of gas-liquid separator, and the material output of forced-circulation evaporator is linked back the entrance of gas-liquid separator; The thermal source input of forced-circulation evaporator connects the superheated steam output directly connecting the compression of function of mechanical steam recompression machine; The cooling water output of described climbing film evaporator and forced-circulation evaporator, be all connected the thermal source input of preheater by pipeline, and cooling water is sent into preheater, in order to the material supplementary heating flowed through in preheater; The cooling water output of described preheater and moisturizing entrance are connected into the compressed steam pipeline after function of mechanical steam recompression machine output by pipeline heater; Described crystal separator connects the 3rd outlet on described gas-liquid separator.
As preferably, described crystal separator comprises the entrance of the 3rd outlet connected on described gas-liquid separator, crystallize out delivery outlet and feed liquid delivery outlet, and described feed liquid delivery outlet is connected into the material input of described forced-circulation evaporator.
As preferably, also comprise surge tank and cooling water conveying pump; Surge tank and cooling water conveying pump are located on the pipeline before the thermal source input of preheater successively; Described climbing film evaporator is connected preheater by surge tank with cooling water conveying pump all successively with the cooling water output of forced-circulation evaporator.
As preferably, the second outlet of described gas-liquid separator is provided with forced circulation pump with the pipeline between the material input of forced-circulation evaporator.Further, the feed liquid delivery outlet of described crystal separator is connected into the material input of forced-circulation evaporator by forced circulation pump.
Have employed the MVR continuous evaporative crystallization system of technique scheme, there is following beneficial effect:
First, this system only adopts single Mechanical Vapor Compression, with more existing adopt compared with the continuous evaporative crystallization device of mechanical vapor recompression technology, the Mechanical Vapor Compression of its default unit price costliness, cost is low.
Secondly, this system is the MVR continuous evaporative crystallization system set up of single Mechanical Vapor Compression only, also multistage recovery indirect steam being carried out to energy can be achieved, the sensible heat of final withdrawal indirect steam and latent heat, and gas-liquid separator is entered to material and crystal separator carries out level forced circulation, also the heat of indirect steam is taken full advantage of in forced circulation, very energy-conservation, and it utilizes forced circulation to gas-liquid separator even crystal separator Feedback heat, thus improves crystallization effect.
In addition, in the system of the present invention, the cooling water of finally discharging in preheater is supplemented by by the water resource of MVR continuous evaporative crystallization system as moisturizing porch again, thus farthest reuse heat and water.
In sum, MVR continuous evaporative crystallization system provided by the invention not only rational technology, and it is cheap to build the equipment cost religion that this VR continuous evaporative crystallization system adopts, realize water, material and heat energy without waste, be beneficial to consecutive production, the basis of guarantee continuous crystallisation also reaches well energy-conservation, water-saving result, even only needs to mend a small amount of water, zero pollutant discharge.
Accompanying drawing explanation
Fig. 1: the process flow diagram of MVR continuous evaporative crystallization system in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.
Embodiment 1:
A kind of technical grade energy-saving and water-saving type MVR continuous evaporative crystallization system as shown in Figure 1, this system is primarily of feed(raw material)inlet 1a, moisturizing entrance 1b, preheater 2, climbing film evaporator 3, gas-liquid separator 4, function of mechanical steam recompression machine 5, forced-circulation evaporator 7, pipeline heater 12, crystal separator 6, surge tank 13, forced circulation pump 10 and cooling water conveying pump composition.
As shown in Figure 1, above-mentioned band preheater 2, climbing film evaporator 3 and forced-circulation evaporator 7 mainly through heat exchange mode to the heating material flow in it, therefore, its structure is heat exchange unit, it all has the material input flowed into for material, flows through in it material output having flowed out heating or evaporation; Also there is the thermal source input and cooling water output, totally four ports that flow into thermal source.As in Fig. 1, Reference numeral is specific as follows: the material input 20 of preheater, the material output 21 of preheater, the thermal source input 22 of preheater and the cooling water output 23 of preheater; The material input 30 of climbing film evaporator, the material output 31 of climbing film evaporator, the thermal source input 32 of climbing film evaporator and the cooling water output 33 of climbing film evaporator; The cooling water output 73 of the material input 70 of forced-circulation evaporator, the material output 71 of forced-circulation evaporator, forced-circulation evaporator thermal source input 72 and forced-circulation evaporator.And the top of above-mentioned gas-liquid separator 4 is provided with the entrance 40 for sending into gas-liquid mixture and the first outlet 41 for exporting steam, the bottom of gas-liquid separator 4 be provided with for feed liquid forced circulation the second outlet 42 and send the 3rd outlet 43 of crystallization for feed liquid, air filter formula screen pack 44 is provided with on the entrance 40 of gas-liquid separator 4 and on the gas-liquid separator 4 of the upper/lower positions of the first outlet 41, air filter formula screen pack 44 is that a stratum reticulare is high between 80-150mm, the silk screen of order number between 300-500 order, and air filter formula screen pack 44 outward flange is connected with gas-liquid separator 4 inner wall sealing, upper and lower two chambers will be divided in gas-liquid separator 4.
As shown in Figure 1, above-mentioned raw materials entrance 1a connects the material input 20 of preheater 2 by pipeline, material output 21 pipeline of preheater 2 connects the material input 30 of climbing film evaporator 3, material flows to climbing film evaporator 3 climbing-film evaporation and sprays from its material output 31, and climbing film evaporator 3 connects the entrance 40 on above-mentioned gas-liquid separator 4.The feed liquid of sending of gas-liquid separator 4 exports 43 by pipeline connection crystal separator 6 entrance 60 for the 3rd of crystallization, crystal separator 6 is provided with crystallize out delivery outlet 61 and feed liquid delivery outlet 62, and the crystallize out delivery outlet 61 of crystal separator 6 connects the holding tank 8 below it.
As shown in Figure 1, the input of the first outlet 41 by steam conveying pipe connection Mechanical Vapor Compression 5 for exporting steam of above-mentioned gas-liquid separator 4.The output of Mechanical Vapor Compression 5 is connected into the thermal source input 32 of climbing film evaporator 3 by steam conveying pipe, the superheated steam that shortens into of vapour pressures in order to first of described gas-liquid separator the outlet 41 to be exported also sends into climbing film evaporator 3, rises film heat to realize material in climbing film evaporator 3.Above-mentioned forced-circulation evaporator 7 is connected between the second outlet 42 of gas-liquid separator 4 and the entrance 40 of gas-liquid separator by pipeline, specifically the material input 70 of forced-circulation evaporator 7 exports 42 with second of gas-liquid separator 4 and is connected, and the material output 71 of forced-circulation evaporator 7 is linked back by pipeline the entrance 40 of liquid/gas separator.Above-mentioned forced circulation pump 10 is located on the pipeline between the second outlet 42 of gas-liquid separator and the material input 70 of forced-circulation evaporator 7, and the feed liquid delivery outlet 62 of crystal separator 6 is connected into the material input 70 of forced-circulation evaporator 7 by forced circulation pump 10.And the thermal source input 72 of forced-circulation evaporator 7 connects the superheated steam output directly connecting function of mechanical steam recompression machine 5 and compress.
As shown in Figure 1, above-mentioned climbing film evaporator cooling water output 33 is all connected the thermal source input 22 of preheater 2 with the cooling water output 73 of forced-circulation evaporator by pipeline, and cooling water is sent into preheater 2, in order to the material supplementary heating flowed through in preheater 2.Particularly, above-mentioned surge tank 13 and cooling water conveying pump are located on the pipeline before the thermal source input 22 of preheater 2 successively; The cooling water output 33 of climbing film evaporator is connected preheater 2 by surge tank 13 with cooling water conveying pump all successively with the cooling water output 73 of forced-circulation evaporator.
Finally, the cooling water output 23 of above-mentioned preheater 2 and moisturizing entrance 1b are connected into the compressed steam pipeline after function of mechanical steam recompression machine 5 output by pipeline heater 12.
Cooling water after cooling water after the heat exchange of above-mentioned climbing film evaporator 3 and forced-circulation evaporator 7 heat exchange is the hot water with uniform temperature, also as the thermal source of preheater 2, thus energy-conservation further.Therefore, climbing film evaporator 3 cooling water output 33 is all connected the thermal source input 22 of preheater 2 with the cooling water output 73 of forced-circulation evaporator 7 by pipeline, and object cooling water is sent into preheater 2 in order to the material preheating flowed through in preheater.In fact, the power dissipation ratio that every platform Mechanical Vapor Compression 5 uses is larger, if material is not heated to bubble point temperature in preheater 2, finally can affect rear film of continuing rising heat and compressor to the total power consumption of the recompression process of steam, the total energy consumption of whole continuous crystallisation device can be increased, but in order to ensure good energy saving technology effect, depend merely on the preheater 2 sometimes pre-heating temperature elevation deficiency of cooling water as thermal source, therefore present invention employs the preheater 2 of electrified heating to ensure will flow out the heating material of preheater 2 to bubble point temperature.
The feed liquid delivery outlet 62 of above-mentioned crystal separator is connected into the pipeline connected between forced-circulation evaporator 7 and the second outlet 42 of gas-liquid separator 4, again participates in forced-circulation evaporation, ensures continuous crystallisation better.
As fully visible, the present invention adopts a Mechanical Vapor Compression 5 pairs of climbing film evaporators 3 and forced-circulation evaporator 7 together steam heating, respectively climbing film evaporator 3 and forced-circulation evaporator 7 are distinguished to the equipment of heat supply than employing two Mechanical Vapor Compression 5, at least energy-conservation more than 20%.Why adopt a Mechanical Vapor Compression 5 just can realize above-mentioned heat supply, one of reason is also to combine and present invention employs and by the preheater 2 of heating material to bubble point temperature, thus can reduce the operating pressure of single Mechanical Vapor Compression 5.Consider that Mechanical Vapor Compression 5 is expensive, in the continuous evaporative crystallization equipment of existing employing mechanical vapor recompression technology, the price of Mechanical Vapor Compression 5 accounts for complete equipment price 30-50%, therefore taking cost into account, continuous evaporative crystallization device of the present invention has the two-fold advantage that cost is low and energy consumption is low concurrently.
The above-mentioned Mechanical Vapor Compression 5 of the present embodiment is Roots Compressor, and above-mentioned climbing film evaporator 3 is pipe heat exchangers.
The following method being MVR continuous evaporative crystallization system of the present invention and carrying out continuous crystallisation, comprises the steps:
A. first, sent into by material feeding to be crystallized in preheater 2, the sensible heat passing through above-mentioned cooling water in preheater, as thermal source, by heating material to its bubble point temperature, but does not produce the hot solution of steam;
B. the hot solution in step a is sent in climbing film evaporator 3, superheated steam after climbing film evaporator 3 is compressed by Mechanical Vapor Compression 5 is as using, heat exchange is carried out to above-mentioned hot solution material, realize rising film heating, and producing a large amount of indirect steams, solution is brought into gas-liquid separator 7 by indirect steam together.
In this step, employing climbing film evaporator 3 is that the advantage of pipe heat exchanger is as follows: first, the expense of pipe heat exchanger unit volume is minimum in current evaporimeter, secondly, compared with other evaporimeters, pipe heat exchanger structure is more simple, and making and installation requires relatively low, finally, in the heat-transfer pipe of pipe heat exchanger, the flow velocity of indirect steam is quite fast, and between usual 20m/s-50m/s, the feed liquid time of staying is short, but total heat exchange system is still larger, generally can reach 1200 ~ 6009w/m
2h DEG C.
The indirect steam that wherein solution is brought into gas-liquid separator 4 process by indirect steam together sprays into speed between 25 ~ 50m/s, in order to prevent indirect steam short circuit, during work, the air filter formula screen pack installed in above-mentioned gas-liquid separator 4 forms one mist eliminating barrier, the liquid foam gear carried secretly by the indirect steam that material evaporation produces goes back, and only has indirect steam to pass through.
Consider that indirect steam sprays into speed between 25 ~ 50m/s, speed quickly, therefore we to have employed stratum reticulare high between 80-150mm, the silk screen of order number between 300-500 is as air filter formula screen pack, silk screen is to the mist of particle diameter >=3 ~ 5um, arresting efficiency reaches 97%-98.9%, and effect is very good.
C. be separated through gas-liquid separator 4, a concentrated solution part exports 42 by gas-liquid separator 4 second and again sends into forced-circulation evaporator 7 heating evaporation, and the gas-liquid mixture of generation returns to gas-liquid separator 4; Another part is from being expelled to crystal separator crystallization 6; In this step, indirect steam is sent gas-liquid separator and is compressed into superheated steam by function of mechanical steam recompression machine, then sends into climbing film evaporator 3 and forced-circulation evaporator 7 as heating energy source; Cooling water is sent into the part heating energy source of preheater 2 as pre-heater by the cooling water output of climbing film evaporator 3 and forced-circulation evaporator 7.Cooling water and the moisturizing entrance 1b of the cooling water output eliminating of preheater collect jointly, and are connected into the compressed steam pipeline after function of mechanical steam recompression machine 5 output by pipeline heater 12.By the multistage recycling of heat energy of this steam and water, adopt the continuous evaporative crystallization method of said system, not only continuous seepage is effective, and waste without raw material, water, cost is low, but also very energy-conservation.
D. in separator crystallization 6, crystallize out is discharged, and residue concentrated solution also delivers to heating evaporation in the forced-circulation evaporator 7 in step c.
Embodiment 2:
Embodiment 2 is with the difference of embodiment 1, and the Mechanical Vapor Compression 5 of the present embodiment is centrifugal compressor, and all the other repeat embodiment 1.
Energy-conservation Experimental comparison's example:
Select sodium carbonate to be material, sodium carbonate is joined respectively in the continuous evaporative crystallization device of embodiment 1 and 2, and adopt the method for embodiment 1 and 2 respectively.
The observable index evaporating the embodiment 1 and 2 of the required raw quantity of steam of 1 ton of steam multiple-effect evaporation and employing mvr technology comparatively, is shown in following form:
Table 1: embodiment 1 compares with multiple-effect evaporation
Table 2: embodiment 2 compares with multiple-effect evaporation
Note: be the standard coal of 0.404kg according to the heat of equal value of 1kWh electricity, the heat of equal value of 1kg saturated vapor is that the standard coal of 0.145kg calculates
Industrial commonly using is evaporated to economic benefits and social benefits, triple effect, four-effect evaporation; Substantially do not have after five effect evaporations.One be because multiple-effect evaporation effect number more costs of equipment are more for huge, two be five effects after not obvious in interpolation effect number effect.
Data from table 1 can show that embodiment 1 adopts MVR technology to have comparatively significantly energy-conservation relative to tradition evaporation.Wherein compared with double-effect evaporation on average energy-conservation 78%, compared with triple effect evaporation on average energy-conservation 70%, compared with four-effect evaporation on average energy-conservation 60%, compared with five effect evaporations on average energy-conservation 55%.
Data from table 2 can show that embodiment 2 adopts MVR technology to have comparatively significantly energy-conservation relative to tradition evaporation.Wherein compared with double-effect evaporation on average energy-conservation 85%, compared with triple effect evaporation on average energy-conservation 79%, compared with four-effect evaporation on average energy-conservation 72%, compared with five effect evaporations on average energy-conservation 69%.
Claims (5)
1. a technical grade energy-saving and water-saving type MVR continuous evaporative crystallization system, is characterized in that:
Described system comprises feed(raw material)inlet (1a), moisturizing entrance (1b), preheater (2), climbing film evaporator (3), gas-liquid separator (4), function of mechanical steam recompression machine (5), forced-circulation evaporator (7), pipeline heater (12) and a crystal separator (6);
Described preheater (2), climbing film evaporator (3) and forced-circulation evaporator (7) are all heat exchange units; Its include be connected material input (20,30,70), material output (21,31,71) and the thermal source input (22,32,72) be connected, cooling water output (23,33,73); Described gas-liquid separator (4) comprise entrance (40) for sending into gas-liquid mixed material, for export steam the first outlet (41), for feed liquid forced circulation the second outlet (42) and send the 3rd outlet (43) of crystallization for feed liquid;
Described feed(raw material)inlet (1a) connects the material input (20) of preheater (2) by pipeline, the material output (21) of preheater (2) connects the material input (30) of climbing film evaporator (3) by pipeline, the material output (31) of climbing film evaporator (3) connects the entrance (40) of gas-liquid separator;
Described function of mechanical steam recompression machine (5) is connected between the first outlet (41) of gas-liquid separator (4) and the thermal source input (32) of climbing film evaporator by steam conveying pipe, vapour pressure in order to be exported by described gas-liquid separator shortens superheated steam into and sends into climbing film evaporator (3), rises film heat to realize material;
The material input (70) of described forced-circulation evaporator (7) connects the second outlet (42) of gas-liquid separator, and the material output (71) of forced-circulation evaporator (7) is linked back the entrance (40) of gas-liquid separator; The thermal source input (72) of forced-circulation evaporator (7) connects the superheated steam output directly connecting function of mechanical steam recompression machine (5) and compress;
Described climbing film evaporator (3) is all connected the thermal source input (22) of preheater (2) with the cooling water output (33,73) of forced-circulation evaporator (7) by pipeline, and cooling water is sent into preheater (2), in order to the material supplementary heating flowed through in preheater (2);
Cooling water output (23) and the moisturizing entrance (1b) of described preheater (2) are connected into the compressed steam pipeline after function of mechanical steam recompression machine (5) output by pipeline heater (12);
Described crystal separator (6) connects the 3rd outlet (43) on described gas-liquid separator (4).
2. a kind of technical grade energy-saving and water-saving type MVR continuous evaporative crystallization system according to claim 1, is characterized in that:
Described crystal separator (6) comprises the entrance (60) of the 3rd outlet (43) connected on described gas-liquid separator (4), crystallize out delivery outlet (61) and feed liquid delivery outlet (62), and described feed liquid delivery outlet (62) is connected into the material input (70) of described forced-circulation evaporator (7).
3. a kind of technical grade energy-saving and water-saving type MVR continuous evaporative crystallization system according to claim 1 and 2, is characterized in that:
Also comprise surge tank (13) and cooling water conveying pump; Surge tank (13) and cooling water conveying pump are located on the pipeline before the thermal source input (22) of preheater (2) successively; Described climbing film evaporator (3) is connected preheater (2) by surge tank (13) with cooling water conveying pump all successively with the cooling water output (33,73) of forced-circulation evaporator (7).
4. a kind of technical grade energy-saving and water-saving type MVR continuous evaporative crystallization system according to claim 1, is characterized in that:
Pipeline between second outlet (42) of described gas-liquid separator and the material input (70) of forced-circulation evaporator (7) is provided with forced circulation pump (10).
5. a kind of technical grade energy-saving and water-saving type MVR continuous evaporative crystallization system according to claim 2, is characterized in that:
Pipeline between second outlet (42) of described gas-liquid separator and the material input (70) of forced-circulation evaporator (7) is provided with forced circulation pump (10), and the feed liquid delivery outlet (62) of described crystal separator (6) is connected into the material input (70) of forced-circulation evaporator (7) by forced circulation pump (10).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105363227A (en) * | 2015-12-02 | 2016-03-02 | 中国科学院理化技术研究所 | Mechanical vapor recompression system and mechanical vapor recompression method based on system |
| CN106166401A (en) * | 2016-08-16 | 2016-11-30 | 广西联壮科技股份有限公司 | Combined type barium sulfate crystallization apparatus |
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| JPS58128101A (en) * | 1982-01-27 | 1983-07-30 | Ebara Corp | Concentrator |
| CN201988302U (en) * | 2011-01-25 | 2011-09-28 | 杭州联合超滤净化设备有限公司 | Air water separating device |
| CN202594905U (en) * | 2012-02-23 | 2012-12-12 | 北京浦仁美华节能环保科技有限公司 | MVR (mechanical vapor recompression) efficient and energy-saving evaporating system |
| CN103203116A (en) * | 2013-04-24 | 2013-07-17 | 江苏科化节能环保设备有限公司 | MVR (Mechanical Vapor Recompression) continuous evaporative crystallization system and continuous evaporative crystallization method |
| CN203447809U (en) * | 2013-07-05 | 2014-02-26 | 重庆江增船舶重工有限公司 | MVR (Mechanical Vapor Recompression) evaporative crystallization system |
| CN204447377U (en) * | 2015-01-19 | 2015-07-08 | 陈式好 | Technical grade energy-saving and water-saving type MVR continuous evaporative crystallization system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105363227A (en) * | 2015-12-02 | 2016-03-02 | 中国科学院理化技术研究所 | Mechanical vapor recompression system and mechanical vapor recompression method based on system |
| CN106166401A (en) * | 2016-08-16 | 2016-11-30 | 广西联壮科技股份有限公司 | Combined type barium sulfate crystallization apparatus |
| CN106166401B (en) * | 2016-08-16 | 2018-03-16 | 广西纺源医疗科技有限公司 | Combined type barium sulfate crystallization apparatus |
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