CN107510949A - A kind of MVR vapo(u)rization systems - Google Patents
A kind of MVR vapo(u)rization systems Download PDFInfo
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- CN107510949A CN107510949A CN201710876742.4A CN201710876742A CN107510949A CN 107510949 A CN107510949 A CN 107510949A CN 201710876742 A CN201710876742 A CN 201710876742A CN 107510949 A CN107510949 A CN 107510949A
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Abstract
The embodiment of the present invention discloses a kind of MVR vapo(u)rization systems, including MVR evaporators, the first pipeline, vapour compression machine, cooling line and the second pipeline, the tube side of the MVR evaporators is connected by first pipeline and the vapour compression machine with the shell side of the MVR evaporators；Cooling line connects with the air inlet of vapour compression machine；One end of second pipeline connects with tube side, and the other end connects with shell side, and one end that the first pipeline connects with shell side, and the other end of the second pipeline is additionally provided with the first valve on the both sides of MVR evaporators, the second pipeline respectively.In above-mentioned the technical program, by increasing the tube side of connection vapour compression machine and the second pipeline of shell side, change mode of heating of the conventional MVR vapo(u)rization systems in the heating period to liquid to be treated, so as to avoid using extra heat sources such as electric heaters, to reduce the complexity of whole MVR vapo(u)rization systems, improve heat exchange efficiency of the MVR vapo(u)rization systems in the heating period, pre- good antiscale property.
Description
Technical field
The application is related to MVR evaporation equipments field, more particularly to a kind of MVR vapo(u)rization systems.
Background technology
MVR (Mechanical Vapor Recompression, mechanical steam recompression) vapo(u)rization system uses low temperature
Steam is produced with low-pressure steam steaming technique and clean energy resource (i.e. electric energy), the moisture in medium is separated, with the section of its protrusion
Energy characteristic, is widely used in the industries such as chemical industry, pharmacy, food, beverage, environmental protection.
Conventional MVR vapo(u)rization systems include MVR evaporators, vapour compression machine and cooling water pipeline, the tube side of MVR evaporators
Connected by connecting pipeline and vapour compression machine with the shell side of MVR evaporators, the air inlet of cooling line and vapour compression machine connects
It is logical.The course of work of MVR vapo(u)rization systems includes heating period and distillation stage.In the heating period, due to vapour compression machine not yet
To open, the cooling water pipeline that thus be accordingly used in control vapour compression machine temperature may be at closed mode, the liquid to be treated of normal temperature,
Such as industrial wastewater, into the tube side of MVR evaporators.Using thermal source, such as electric heater, to heat liquid to be treated, directly
A large amount of steam are produced to liquid to be treated boiling.Then the work of MVR vapo(u)rization systems enters the distillation stage, and liquid to be treated is steamed
A large amount of steam flow out from the tube side of MVR evaporators caused by hair, by the pressurization of vapour compression machine, it is become HTHP
High-quality steam, into the shell side of MVR evaporators.In shell side, high-quality steam passes through the heat exchanger tube in MVR evaporators
Heat exchange is carried out with the liquid to be treated in tube side, so as to maintain the lasting progress that liquid to be treated is evaporated.In the distillation stage, steam
High-quality steam of the vapour compressor by the low-quality both vapor compression of the low-temp low-pressure flowed out from shell side into HTHP, in order to anti-
Only vapour compression machine temperature is too high, can be passed through cold water in right amount by cooling water pipeline to control the temperature of vapour compression machine.
Conventional MVR vapo(u)rization systems generally require to enter liquid to be treated using thermals source such as electric heaters in the heating period
Row initial heating, the complexity and production and operation and maintenance expenses use of whole MVR vapo(u)rization systems can be increased, this is those skilled in the art
Urgent problem to be solved.
The content of the invention
In order to solve the above technical problems, the application provides a kind of improved MVR vapo(u)rization systems, to change MVR vapo(u)rization systems
In the mode of heating of heating period, only with vapour compression machine heat supply, avoid using other extra heat sources.
Specifically, there is provided a kind of MVR vapo(u)rization systems, including MVR evaporators, the first pipeline, vapour compression machine, cooling line
With the second pipeline, the tube side of the MVR evaporators passes through first pipeline and the vapour compression machine and the MVR evaporators
Shell side connection；The cooling line connects with the air inlet of the vapour compression machine；One end of second pipeline with it is described
Tube side connects, and the other end connects with the shell side, and one end that first pipeline connects with the shell side, and described the
The other end of two pipelines is located at the both sides of the MVR evaporators respectively.
Alternatively, foregoing MVR vapo(u)rization systems also include gas-liquid heat-exchange and collecting condensation tank, on the gas-liquid heat-exchange
The air inlet in portion is connected by the 3rd pipeline with the shell side, gas outlet and the condensation of the gas-liquid heat-exchange bottom
Thing collecting tank connects；The liquid outlet of the gas-liquid heat-exchange connects with the inlet of the MVR evaporators.
Alternatively, foregoing MVR vapo(u)rization systems also include connecting the 4th of the collecting condensation pot bottom and the tube side
Pipeline.
Alternatively, in foregoing MVR vapo(u)rization systems, the first liquid level sensor is additionally provided with the collecting condensation tank, it is described
The height of first liquid level sensor is less than the connection connected on the collecting condensation tank with the gas outlet of the gas-liquid heat-exchange
The height of mouth；4th pipeline is provided with the 3rd valve for being used for opening according to the trigger signal of first liquid level sensor
Door.
Alternatively, in foregoing MVR vapo(u)rization systems, the 3rd pipeline is provided with pressure sensor, the collecting condensation
Tank top is provided with gas exhaust piping, and the gas exhaust piping, which is provided with, to be used to adjust aperture according to the pressure value of the pressure sensor
The second valve.
Alternatively, foregoing MVR vapo(u)rization systems also include liquid-liquid heat exchanger, the first inlet of the liquid-liquid heat exchanger and institute
State the liquid outlet connection of gas-liquid heat-exchange, the first liquid outlet connected on the liquid-liquid heat exchanger with first inlet and institute
The inlet for stating MVR evaporators is connected；The liquid outlet of second inlet of the liquid-liquid heat exchanger and the MVR evaporators connects
It is logical.
Alternatively, foregoing MVR vapo(u)rization systems also include condensate trap, the condensate trap include housing, every
Plate and porous aggregate, the dividing plate are arranged in the housing, and the housing is divided into first chamber and second chamber, described
First chamber bottom connects with the second chamber bottom, and the porous aggregate is filled in the first chamber bottom and described
The connectivity part of two cavity bottoms；The liquid outlet of the MVR evaporators connects with the first chamber, the second chamber with it is described
The second inlet connection of liquid-liquid heat exchanger.
Alternatively, in foregoing MVR vapo(u)rization systems, the second liquid level sensor, second chamber are provided with the first chamber
The 3rd liquid level sensor is provided with room, the setting of second liquid level sensor is highly higher than the 3rd liquid level sensor；Institute
State the 5th pipeline and the 6th pipeline for being additionally provided with first chamber and being connected respectively with the tube side of the MVR evaporators, described
The height of the pump orifice of five pipelines is less than the height of second liquid level sensor, and is passed greater than or equal to the 3rd liquid level
The height of sensor, the height of the pump orifice of the 6th pipeline are less than the height of the 3rd liquid level sensor.
Alternatively, in foregoing MVR vapo(u)rization systems, the second chamber bottom also connects with the cooling line.
Alternatively, in foregoing MVR vapo(u)rization systems, switch valve and proportioning valve have been arranged in parallel on the cooling line.
In the MVR vapo(u)rization systems of the technical program, by increase connect vapour compression machine tube side and shell side second
Pipeline, and excessive cooling water is passed through in the heating period by cooling line, conventional MVR vapo(u)rization systems are changed completely to exist
Heating period to the mode of heating of liquid to be treated, so as to avoid using extra heat sources such as electric heaters, is steamed with reducing whole MVR
The complexity of hair system, while also improve heat exchange efficiency of the MVR vapo(u)rization systems in the heating period.Further, since omit completely
The extra heat source as heater, only with vapour compression machine carrys out heat supply, and surface is tied when avoiding heater high-temperature heating
The problem of dirty, the volatile quantity of the volatile contaminant in heating period liquid to be treated is decreased, improve whole MVR evaporations
Treatment effect of the system to liquid to be treated.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the first embodiment of the MVR vapo(u)rization systems of the application；
Fig. 2 is the structural representation of second of embodiment of the MVR vapo(u)rization systems of the application；
Fig. 3 is the structural representation of the third embodiment of the MVR vapo(u)rization systems of the application；
Fig. 4 is the structural representation of the 4th kind of embodiment of the MVR vapo(u)rization systems of the application；
Fig. 5 be the application MVR vapo(u)rization systems the 4th kind of embodiment in condensate trap structural representation
Figure；
Fig. 6 is the structural representation of the 5th kind of embodiment of the MVR vapo(u)rization systems of the application；
Fig. 7 be the application MVR vapo(u)rization systems the 5th kind of embodiment in condensate trap structural representation
Figure；
Fig. 8 be the application MVR vapo(u)rization systems the 5th kind of embodiment in condensate trap setting height
Schematic diagram；
Fig. 9 makes for the first of condensate trap in the 5th kind of embodiment of the MVR vapo(u)rization systems of the application
With the schematic diagram of state；
Figure 10 be the MVR vapo(u)rization systems of the application the 5th kind of embodiment in second of condensate trap make
With the schematic diagram of state；
Figure 11 be the MVR vapo(u)rization systems of the application the 5th kind of embodiment in the third of condensate trap make
With the schematic diagram of state；
Figure 12 is the structural representation of the 6th kind of embodiment of the MVR vapo(u)rization systems of the application.
Description of reference numerals：
MVR evaporators 1；Tube side 101；Shell side 102；Inlet 103；Liquid outlet 104；First pipeline 105；First pipeline
One end 1051；Second pipeline 106；The other end 1061 of second pipeline；First valve 1062；3rd pipeline 107；Pressure sensor
1071；4th pipeline 108；3rd valve 1081；5th pipeline 109；The pump orifice 1091 of 5th pipeline；6th pipeline 110；The
The pump orifice 1101 of six pipelines；
Vapour compression machine 2；The air inlet 201 of vapour compression machine；The gas outlet 202 of vapour compression machine；
Cooling line 3；Switch valve 301；Proportioning valve 302；
Gas-liquid heat-exchange 4；The air inlet 401 of gas-liquid heat-exchange；The gas outlet 402 of gas-liquid heat-exchange；Gas-liquid heat-exchange
Inlet 403；The liquid outlet 404 of gas-liquid heat-exchange；
Collecting condensation tank 5；First liquid level sensor 501；Connected entrance 502；
Gas exhaust piping 6；Second valve 601；
Liquid-liquid heat exchanger 7；First inlet 701；First liquid outlet 702；Second inlet 703；Second liquid outlet 704；
Condensate trap 8；Housing 801；Dividing plate 802；First chamber 803；Second chamber 804；Porous aggregate 805；The
Two liquid level sensors 806；3rd liquid level sensor 807；The inlet 808 of condensate trap；Condensate trap goes out liquid
Mouth 809；Distill water layer 810；Suspension nitride layer 811；
Gas-liquid separator 9.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implementation gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
In the description of the present invention and embodiment, it is to be understood that term " first ", " second " are only used for describing mesh
, and it is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, limit
Surely there is " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".
In the description of the present invention and embodiment, it is to be understood that term " on ", " under ", " top ", " bottom ", " interior ",
The orientation or position relationship of instructions such as " outer " are based on orientation shown in the drawings or position relationship, are for only for ease of and describe this hair
It is bright and simplify description, rather than instruction or imply that signified device or parts must have specific orientation, with specific side
Position construction and operation, therefore be not considered as limiting the invention.
Fig. 1 is refer to, in the specific embodiment of the present invention, there is provided a kind of MVR vapo(u)rization systems, including MVR steam
Send out device 1, the first pipeline 105, vapour compression machine 2, the pipeline 106 of cooling line 3 and second, the tube sides 101 of MVR evaporators passes through the
One pipeline 105 and vapour compression machine 2 connect with the shell side 102 of MVR evaporators；The air inlet of cooling line 3 and vapour compression machine
201 connections；One end of second pipeline 106 connects with tube side 101, and the other end 1061 connects with shell side 102, and the first pipeline
105 one end 1051 connected with shell side 102, and the second pipeline the other end 1061 respectively be located at MVR evaporators 1 both sides,
First valve 1062 can also be set on the second pipeline 106.Herein, the first valve 1062 can be proportioning valve or
Switch valve etc..
When in use, the top of MVR evaporators 1 can also set the gas-liquid separator connected with the tube side of MVR evaporators 101
9, to remove most drops and foam in tube side 101 in steam caused by evaporation.Now, the first pipeline 105 can
To be connected by gas-liquid separator 9 with tube side 101, one end of the second pipeline 106 can also pass through gas-liquid separator 9 and tube side
101 connections.
Conventional MVR vapo(u)rization systems are in the heating period, and due to being heated using modes such as electric heaters, vapour compression machine need not
Open, thus now cooling line may be at closed mode；When MVR vapo(u)rization systems enter the distillation stage, then need to open cold
But pipeline is passed through cooling water to control the temperature of vapour compression machine in right amount.And in the technical program, connect steam by increasing
The tube side 101 of compressor and the second pipeline 106 of shell side 102, and be passed through by cooling line 3 in the heating period excessive cold
But water, mode of heating of the conventional MVR vapo(u)rization systems in the heating period to liquid to be treated is changed completely, so as to avoid using
The extra heat sources such as electric heater, to reduce the complexity of whole MVR vapo(u)rization systems, while improve MVR vapo(u)rization systems and heating
The heat exchange efficiency in stage.
Specifically, in the heating period, now the liquid to be treated temperature in the tube side 101 of MVR evaporators not yet reaches
Boiling point, the first valve 1062 on the second pipeline 106 is opened.Original gas in tube side 101 is on the first pipeline 105
Enter vapour compression machine 2 from the first pipeline 105 in the presence of vapour compression machine 2, temperature and pressure all raises after being compressed, then
By the first pipeline 105 from the side of MVR evaporators 1, that is, from one end 1051 that the first pipeline 105 connects with shell side 102
Place is entered in the shell side 102 of MVR evaporators.In shell side 102, high-temperature gas transfers thermal energy to the pending liquid of low temperature
Body, after heat exchange, gas temperature reduces, then the second pipeline 106 of the opposite side connection for passing through MVR evaporators 1 flows back again
Into the tube side 101 of MVR evaporators.At the same time, with the method for routine with completely contradicting, it is in heating period cooling line
Open mode, cooling water is sprayed into as much as possible.Vapour compression machine 2 does mechanical work to gas, changes into the heat energy of gas, generally
This temperature rise is higher than 100 degree under atmospheric pressure, so cooling water is absorbed heat energy during cooling steam compressor 1, to the greatest extent
Possible acred unboiled water steam.In this way, mainly contain vapor in gas after entering being compressed in shell side 102 and do not coagulate
Property gas, during the liquid to be treated in by heat exchanger tube and tube side 101 exchanges heat, saturated steam undergoes phase transition biography
Heat, latent heat is passed into liquid to be treated, incoagulable gas is then by sensible heat transfer to liquid to be treated.Because saturated steam passes
The latent heat passed is much larger than the sensible heat of incoagulable gas transmission, enters in the gas in shell side 102 that water vapour content is higher, then changes
The thermal efficiency is also higher.In the presence of vapour compression machine 2, gas is such between the tube side 101 and shell side 102 of MVR evaporators
Reciprocal flowing, so as to the liquid to be treated continuous heating in tube side 101, and then on the one hand avoid extra using electric heater etc.
Thermal source, the complexity, cost and operation and maintenance expenses for reducing whole MVR vapo(u)rization systems are used, and on the other hand also improve changing for heating period
The thermal efficiency, while mode of heating also milder.
After the liquid to be treated in tube side 101 is heated to boiling point, the first valve 1062 is closed, now MVR evaporates
The work of system enters the distillation stage.In the distillation stage, the liquid to be treated ebullition, gasification in tube side 101 produces substantial amounts of steam
Vapour, by gas-liquid separator 9, drop and foam that the overwhelming majority is mixed in steam are eliminated, and enter by the first pipeline 105
Enter vapour compression machine 2.By the compression of vapour compression machine 2, the steam into the low-temp low-pressure of vapour compression machine is compressed into height
The steam of warm high pressure, then entered by the first pipeline 105 in shell side 102.The steam of HTHP condenses heat release in shell side,
The liquid to be treated transferred heat in tube side 101, to maintain liquid to be treated persistently to evaporate.Produced simultaneously in shell side 102
Condensate shell side 102 is discharged by the liquid outlet 104 of the bottom of MVR evaporators 1.
In addition, conventional MVR vapo(u)rization systems are in the heating period, due to using modes such as electrical heating, heating-up temperature is higher than treating
Handle the boiling point of waste water so that the easy fouling in surface of heater, while in the liquid to be treated contacted with heater surfaces
Volatile contaminant is easier to evaporate at high temperature, can influence liquid to be treated (such as industrial wastewater) in evaporation stage
Treatment effect.And in the technical program, the extra heat source as heater is eliminated completely, is come only with vapour compression machine
Heat supply, avoid heater and the problem of surface scale, decrease waving in heating period liquid to be treated in high-temperature heating
The volatile quantity of contact scar thing is sent out, improves treatment effect of the whole MVR vapo(u)rization systems to liquid to be treated.
Alternatively, Fig. 2 is refer to, foregoing MVR vapo(u)rization systems also include gas-liquid heat-exchange 4 and collecting condensation tank 5, gas
The air inlet 401 on the top of liquid heat exchanger 4 is connected by the 3rd pipeline 107 with shell side 102, the gas outlet of the bottom of gas-liquid heat-exchange 4
402 connect with collecting condensation tank 5；The liquid outlet 404 of gas-liquid heat-exchange connects with the inlet 103 of MVR evaporators.
In the distillation stage of MVR vapo(u)rization systems, the higher escaping gas of temperature and incoagulability gas in shell side 102 be present
Body, incoagulable gas can form thermal resistance between steam and heat-transfer surface, influence the condensation heat release of steam so that heat exchange efficiency drops
Low, heat can not transmit in time；The escaping gas for not having condensation in shell side 102 in short time rests on shell side 102 for a long time
In easily condense, pollute shell side 102 in condensed water；Incoagulable gas and escaping gas enrichment, can also cause shell side
The rise of 102 pressure, increase the risk that condensed water pollution of surface thing is mixed or dissolved with condensed water.Therefore, can be by this
A little gases are discharged by the 3rd pipeline 107 from shell side 102, it is reached gas-liquid heat-exchange 4.Enter MVR in liquid to be treated
Before the tube side of evaporator, first enter gas-liquid heat-exchange 4 from the inlet 403 of gas-liquid heat-exchange, due to the higher gas of temperature
It is larger with the temperature difference of liquid to be treated, therefore the two is exchanged heat in gas-liquid heat-exchange 4.After heat exchange, liquid to be treated is from gas
The liquid outlet 404 of liquid heat exchanger flows out, and is entered by the inlet 103 of MVR evaporators in the tube side 101 of MVR evaporators.And
The gas discharged from shell side 102 is easier to condense out after exchanging heat with the liquid to be treated of normal temperature, condensate, not yet cold
Solidifying gas and incoagulable gas flow out at the gas outlet 402 of the bottom of gas-liquid heat-exchange 4, enter in collecting condensation tank 5.
By gas-liquid heat-exchange 4, liquid to be treated on the one hand is preheated using the heat for the gas discharged in shell side 102,
Energy regenerating is realized, the capacity usage ratio of whole MVR vapo(u)rization systems is improved, on the other hand makes escaping gas exothermic condensation, is prevented
Only it, which is directly discharged into environment, pollutes air.Further, since air inlet 401 is arranged on the top of gas-liquid heat-exchange 4, gas outlet 402
Be arranged on the bottom of gas-liquid heat-exchange 4, so gas gas-liquid heat-exchange 4 carry out heat exchange condensation when, promotion of the condensate in air-flow
Be easier to enter in collecting condensation tank 5 under Action of Gravity Field, gas passage will not be blocked.
Alternatively, Fig. 3 is refer to, foregoing MVR vapo(u)rization systems also include the bottom of connection collecting condensation tank 5 and tube side
101 the 4th pipeline 108.
After heat exchange condenses, condensate enters in collecting condensation tank 5 gas discharged from shell side 102.Due to
Volatile materials in condensate be present, be discharged into if these materials evaporate into gas in air, air can be polluted.For
This, by setting the 4th pipeline 108 of the bottom of connection collecting condensation tank 5 and tube side 101, can utilize the negative pressure of tube side 101
By in the tube side 101 of condensate pumpback to MVR evaporators, escaping gas is avoided to be discharged into air.
Alternatively, it refer to Fig. 4, in foregoing MVR vapo(u)rization systems, the first liquid level biography be additionally provided with collecting condensation tank 5
Sensor 501, the height of the first liquid level sensor 501 is less than on collecting condensation tank 5 to be connected with the gas outlet 402 of gas-liquid heat-exchange
Connected entrance 502 height；4th pipeline 108, which is provided with, to be used to be opened according to the trigger signal of the first liquid level sensor 501
The 3rd valve 1081.
First liquid level sensor 501 is used for the liquid level for detecting the condensate in collecting condensation tank 5.When the first level sensing
When device 501 is triggered, the 3rd valve 1081 on the 4th pipeline 108, using the negative pressure in tube side 101 by condensate pumpback to pipe
In journey 101.When the first liquid level sensor 501 is not triggered, then the 3rd valve 1081 can close.First liquid level sensor
501 height is less than the height of connected entrance 502, ensures that collecting condensation tank 5 will not also block when in maximum level and is used for
3rd pipeline 107 of exhaust, unnecessary resistance will not be caused to the gas flowing in the 3rd pipeline 107.
Alternatively, Fig. 3 and Fig. 4 be refer to, in foregoing MVR vapo(u)rization systems, the 3rd pipeline 107 is provided with pressure sensor
1071, the top of collecting condensation tank 5 is provided with gas exhaust piping 6, and gas exhaust piping 6 is provided with the pressure being used for according to pressure sensor 1071
Force value and the second valve 601 for adjusting aperture, such as can be with adoption rate valve.Alternatively, pressure sensor 1071 can be set
On the 3rd pipeline 107, as shown in Figure 3；3rd pipeline 107 can be connected by the local pipeline of the second pipeline 106 with shell side 102
Logical, therefore, pressure sensor 1071 can be arranged on the local pipeline of the second pipeline 106 connected with the 3rd pipeline 107, such as
Shown in Fig. 4；In addition, pressure sensor 1071 can also be arranged on the first pipeline 105.
As it was previously stated, incoagulable gas and escaping gas enrichment in the evaporation stage of MVR vapo(u)rization systems, shell side 102,
The rise of the pressure of shell side 102 can be also caused, increases the risk that condensed water pollution of surface thing is mixed or dissolved with condensed water.
The top of collecting condensation tank 5 sets gas exhaust piping 6 so that the gas discharged from shell side 102 after gas-liquid heat-exchange 4,
Escaping gas can be condensed into condensate, and incoagulable gas can discharge from gas exhaust piping 6.Also, by the 3rd pipe
Pressure sensor 1071 is set on road 107, set on gas exhaust piping 6 second valve 601 come in time by incoagulable gas and
Escaping gas is discharged from shell side 102, maintains the stabilization of the pressure of shell side 102.When the pressure that pressure sensor 1071 detects
When value is more than preset value, then increase the aperture of the second valve 601；Preset when the pressure value that pressure sensor 1071 detects is less than
During value, then reduce the aperture of the second valve 601.
Alternatively, refer to Fig. 4, foregoing MVR vapo(u)rization systems also include liquid-liquid heat exchanger 7, and the first of liquid-liquid heat exchanger
Inlet 701 connects with the liquid outlet 404 of gas-liquid heat-exchange, and first connected on liquid-liquid heat exchanger 4 with the first inlet 701 goes out
Liquid mouth 702 is connected with the inlet 103 of MVR evaporators；Second inlet 703 and MVR evaporators of liquid-liquid heat exchanger go out
Liquid mouth 104 connects.
Steam exothermic condensation in the shell side 102 of MVR evaporators produces condensed water, from the liquid outlet 104 of MVR evaporators
Discharge shell side 102.Condensed water can be passed into liquid-liquid heat exchanger 7 by the second inlet 703 of liquid-liquid heat exchanger, simultaneously
The heat exchange of liquid liquid will be entered also by the first inlet 701 of liquid-liquid heat exchanger by the liquid to be treated that gas-liquid heat-exchange 4 preheats
In device 7, the two carries out liquid liquid heat exchange, and the energy remained in condensed water is further recycled.After heat exchange, pending liquid
Body is further preheated, and is discharged from the first liquid outlet 702, and MVR evaporators are flowed into by the inlet 103 of MVR evaporators
In tube side 101.And condensed water is then discharged after heat exchange from the second liquid outlet 704 of liquid-liquid heat exchanger.
Alternatively, Fig. 4 and Fig. 5 are refer to, foregoing MVR vapo(u)rization systems also include condensate trap 8, condensate separation
Device 8 includes housing 801, dividing plate 802 and porous aggregate 805, and dividing plate 802 is arranged in housing 801, and housing 801 is divided into
One chamber 803 and second chamber 804, the bottom of first chamber 803 are connected with the bottom of second chamber 804, and porous aggregate 805 is filled in
The bottom of first chamber 803 and the connectivity part of the bottom of second chamber 804；The liquid outlet 104 of MVR evaporators connects with first chamber 803
Logical, second chamber 804 connects with the second inlet 703 of liquid-liquid heat exchanger.Second chamber 804 can also connect with cooling line 3
It is logical, cooling line 3 is fetched water from the bottom of second chamber 804 of condensate trap 8.
Above-mentioned porous aggregate 805, can be such as stainless steel cloth, asbestos gauge.Above-mentioned dividing plate 802 only need by
Housing 801 is separated into left and right two chambers, and dividing plate 802 can be vertically arranged, and as shown in Figure 4 and Figure 5, can also tilt
Set, the application is without limitation.
In the condensed fluid condensed out in the shell side 102 of MVR evaporators, except distilled water, usually it can also mix few
Solvent, oil droplet and other pollutants of amount.Routinely, liquid outlet 104 is provided with the side wall of MVR evaporators 1, goes out liquid
Mouthfuls 104 connect with condensate trap, condensed fluid is passed through in condensate trap and are layered, then from condensate trap
Distilled water is discharged in bottom, so as to obtain the distilled water of cleaning.But the separating effect of conventional condensate trap is relatively
Difference, influence water outlet quality.
Therefore, in MVR vapo(u)rization systems in the technical program, using a kind of new condensate trap 8.The condensate
When in use, the liquid to be separated flowed out from the liquid outlet 104 of MVR evaporators can entering from condensate trap for separator 8
Liquid mouth 808 enters first chamber 803, and part oil droplet and other pollutants are due to the density than distilled water in liquid to be separated
It is small, gradually float on the liquid level of the distillation water layer in first chamber 803, form suspension nitride layer.Meanwhile liquid to be separated enter it is more
In hole filler 805, the tiny oil droplet of another part and other pollutants assemble change greatly in porous aggregate 805, also gradually
Float on the liquid level of the distillation water layer in first chamber 803, converge with the suspension nitride layer of script.Due to the presence of dividing plate 802, treat
Oil droplet and other pollutants in separation liquid converge in the distillation water surface of first chamber 803, and second chamber 804
Almost without oil droplet and other pollutants.
For the conventional condensate trap 8 of same shapes and sizes, the condensate trap 8 of the present embodiment
In, because housing 801 divide into two chambers, thus the thickness of the suspension nitride layer formed in first chamber 803 by dividing plate 802
More thicken, so as to be more convenient for realizing separation.Meanwhile almost there is no oil droplet and other pollutants in second chamber 804, therefore
The distilled water discharged from second chamber 804 is cleaner, and the separating effect of condensate trap 8 is more preferable.
Further, it refer to Fig. 6 and Fig. 7, in the condensate trap 8 in foregoing MVR vapo(u)rization systems, first chamber
The second liquid level sensor 806 is provided with 803, the 3rd liquid level sensor 807, the second liquid level sensor are provided with second chamber 804
806 setting is highly higher than the 3rd liquid level sensor 807；The tube side respectively with MVR evaporators is additionally provided with first chamber 803
The 5th pipeline 109 and the 6th pipeline 110 of 101 connections, the height of the pump orifice 1091 of the 5th pipeline are less than the second level sensing
The height of device 806, and greater than or equal to the height of the 3rd liquid level sensor 807, the height of the pump orifice 1101 of the 6th pipeline
Less than the height of the 3rd liquid level sensor 807.
The second above-mentioned liquid level sensor 806 and the 3rd liquid level sensor 807 are when liquid level reaches corresponding setting height
It is triggered.
It refer to Fig. 8, it is assumed that the second liquid level sensor 806 is H1 relative to the height of the bottom of housing 801, and the 3rd liquid level passes
Sensor 807 is H2 relative to the height of the bottom of housing 801, the pump orifice 1091 of the 5th pipeline relative to the bottom of housing 801 height
Spend for H3, the pump orifice 1101 of the 6th pipeline is H4 relative to the height of the bottom of housing 801, then H1 ＞ H3 >=H2 ＞ H4.
Second liquid level sensor 806, the pump orifice 1091 of the 5th pipeline, the 3rd liquid level sensor 807, the 6th pipeline are taken out
Specific height difference between suction inlet 1101 can determine according to actual conditions.For example, the He of pump orifice 1091 of the 5th pipeline
The setting height of the pump orifice 1101 of 6th pipeline, can adjust specific height according to the density of different types of suspension nitride layer
Degree is poor.
Because first chamber 803 connects with the bottom of second chamber 804, top air pressure is identical, therefore first chamber 803 neutralizes
Liquid in second chamber 804 is equal to the pressure of respective bottom.Utilizing U-tube density contrast principle, it is assumed that the density of water is ρ 1,
The density of suspension is ρ 2, acceleration of gravity g, and distilled water layer height is Hb in first chamber 803, and suspension layer height is
Hc, distilled water is highly Ha in second chamber 804, then can be obtained by liquid pressure formula：
ρ 1gHa=ρ 1gHb+ ρ 2gHc,
Namely：ρ 1Ha=ρ 1Hb+ ρ 2Hc.
Because the density of water is more than the density of suspension, i.e. the ＞ ρ 2 of ρ 1, so Ha ＜ Hb+Hc.
Take Δ h=Hb+Hc-Ha, it is clear that when the thickness Hb of suspension nitride layer is bigger, Δ h value is also bigger.
Fig. 9 is refer to, when the 3rd liquid level sensor 807 is triggered, and the second liquid level sensor 806 is not triggered, is said
The height that water layer is distilled in bright first chamber 803 is less than H1, that is, H1 ＞ (Hb+Hc) plus the height Hb+Hc of suspension nitride layer；
The height Ha of the distillation water layer in second chamber 804 is equal to H2, that is, H2=Ha simultaneously.Therefore, (H1-H2) ＞ (Hb+Hc-
Ha)=Δ h.It can be seen that now, the thickness of the suspension nitride layer in first chamber 803 is relatively thin, enables the 5th pipeline 109, due to
H1 ＞ H3 >=H2, the liquid layer pumpback that the 5th pipeline 109 can be by being highly higher than and equal to H3 parts are walked.
Figure 10 is refer to, when the second liquid level sensor 806 and the 3rd liquid level sensor 807 are triggered simultaneously, illustrates the
The height of distillation water layer in one chamber 803 is equal to H1, that is, (Hb+Hc)=H1 plus the height Hb+Hc of suspension nitride layer；Together
When, the height Ha of the distillation water layer in second chamber 804 is equal to H2, that is, Ha=H2.Therefore, Δ h=(H1-H2).It can be seen that
Now, the thickness of the suspension nitride layer in first chamber 803 is relatively thick, can enable the 6th pipeline 110, due to H1 ＞ H4,
Six pipelines 110 can be by being highly higher than and equal to H4 liquid layer pumpback walk.
Figure 11 is refer to, when the second liquid level sensor of liquid level 806 is triggered, and the 3rd liquid level sensor 807 is not touched
During hair, illustrate that the height of the distillation water layer in first chamber 803 is equal to H1, that is, (Hb plus the height Hb+Hc of suspension nitride layer
+ Hc)=H1；Meanwhile the height Ha of the distillation water layer in second chamber 804 is less than H2, that is, Ha ＜ H2.Therefore, Δ h ＞
(H1-H2).It can be seen that now, the thickness of the suspension nitride layer in first chamber 803 is relatively very thick, can enable the 6th pipeline 110, by
In H1 ＞ H4, walked so as to the liquid layer pumpback by being highly higher than and equal to H4.More preferably, the 5th pipe can be now enabled simultaneously
The pipeline 110 of road 109 and the 6th, more rapidly the liquid layer pumpback by being highly higher than and equal to H4 are walked, and further reduce suspension
Volatile substances in layer are discharged into the risk of air into gas, while further reduce suspension nitride layer and mixed again with distilled water
The risk of conjunction.
By using the condensate trap 8 in MVR vapo(u)rization systems, the suspension in first chamber 803 can be returned
Take out, on the one hand, prevent the volatile materials in suspension nitride layer from can send out into gas, discharge system pollutes to air；The opposing party
Face, avoid the pollutant in suspension nitride layer from being trapped in for a long time in liquid separator, mixed again with distilled water, it is difficult to be formed
With the mixture of separation, the quality of the distilled water of discharge in condensate trap is influenceed.Meanwhile by using in the embodiment
Condensate trap, being capable of pumpback has been separated from condensed fluid as few as possible steaming in pumpback suspension nitride layer
Distilled water, improve the treatment effeciency of condensate trap.
Alternatively, it refer to Figure 12, in foregoing MVR vapo(u)rization systems, switch valve 301 be arranged in parallel on cooling line 3
With proportioning valve 302.
When in use, temperature sensor can be set at the gas outlet 202 of vapour compression machine 2, for gathering both vapor compression
The temperature value of machine.When MVR vapo(u)rization systems are in the heating period, although vapour compression machine will not generally overheat, it is
The more vapor of generation, heat exchange efficiency is improved, it is necessary to spray into cooling water as much as possible, therefore can by switch valve 301
It is always on, and proportioning valve 302 is then closed.After MVR vapo(u)rization systems enter the distillation stage, generally, steam
Hair stage switch valve 301 is closed, and the temperature control proportioning valve 302 of the vapour compression machine 2 according to measured by temperature sensor is opened
Degree, adjust the water of the cooling water of vapour compression machine 2, it is possible to the temperature stabilization of vapour compression machine 2 is maintained, and can also be as far as possible
Cooling water is used less.Especially when second chamber 804 connects with cooling line 3, make cooling line 3 from condensate trap 8
The bottom of second chamber 804 water intaking when, due to cooling water be taken from separation after distilled water, according to the temperature of vapour compression machine 2
To adjust the aperture of proportioning valve 302, cooling water amount can be saved, improves the sewage load of MVR vapo(u)rization systems.In vapour pressure
When the temperature of contracting machine 2 will exceed safe temperature or express specific temperature rise, it can be allowed by opening switch valve 302
The rapid drop in temperature of vapour compression machine 2, so that being not greater than the overshoot of safe temperature in the temperature control of vapour compression machine 2
Amount.Because switch valve 301 and proportioning valve 302 are arranged in parallel, the two is separate, therefore in the temperature to vapour compression machine 2
During degree is controlled, the adverse effect of the temperature overshoot of vapour compression machine 2 can be prevented, again will not be to other vapour pressures
Contracting machine temperature control branch road interferes.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of MVR vapo(u)rization systems, it is characterised in that including MVR evaporators (1), the first pipeline (105), vapour compression machine
(2), cooling line (3) and the second pipeline (106), the tube side (101) of the MVR evaporators pass through first pipeline (105)
And the vapour compression machine (2) connects with the shell side (102) of the MVR evaporators；The cooling line (3) and the vapour pressure
Air inlet (201) connection of contracting machine；One end of second pipeline (106) connects with the tube side (101), the other end (1061)
Connected with the shell side (102), and one end (1051) that first pipeline (105) connects with the shell side (102), and
The other end (1061) of second pipeline is respectively on the both sides of the MVR evaporators (1), second pipeline (106)
It is additionally provided with the first valve (1062).
2. MVR vapo(u)rization systems according to claim 1, it is characterised in that also received including gas-liquid heat-exchange (4) and condensate
Collect tank (5), the air inlet (401) on gas-liquid heat-exchange (4) top passes through the 3rd pipeline (107) and the shell side
(102) connect, the gas outlet (402) of gas-liquid heat-exchange (4) bottom connects with the collecting condensation tank (5)；The gas
The liquid outlet (404) of liquid heat exchanger connects with the inlet (103) of the MVR evaporators.
3. MVR vapo(u)rization systems according to claim 2, it is characterised in that also include connecting the collecting condensation tank (5)
Bottom and the 4th pipeline (108) of the tube side (101).
4. MVR vapo(u)rization systems according to claim 3, it is characterised in that the is additionally provided with the collecting condensation tank (5)
One liquid level sensor (501), the height of first liquid level sensor (501) is less than on the collecting condensation tank (5) and institute
State the height of the connected entrance (502) of gas outlet (402) connection of gas-liquid heat-exchange；4th pipeline (108), which is provided with, to be used for
The 3rd valve (1081) opened according to the trigger signal of first liquid level sensor (501).
5. MVR vapo(u)rization systems according to claim 2, it is characterised in that the 3rd pipeline (107) passes provided with pressure
Sensor (1071), collecting condensation tank (5) top are provided with gas exhaust piping (6), and the gas exhaust piping (6), which is provided with, is used for root
The second valve (601) of aperture is adjusted according to the pressure value of the pressure sensor (1071).
6. according to the MVR vapo(u)rization systems described in claim any one of 2-5, it is characterised in that also including liquid-liquid heat exchanger (7),
The first inlet (701) of the liquid-liquid heat exchanger connects with the liquid outlet (404) of the gas-liquid heat-exchange, the liquid liquid heat exchange
The first liquid outlet (702) and the inlet (103) of the MVR evaporators connected on device (4) with first inlet (701)
It is connected；The second inlet (703) of the liquid-liquid heat exchanger connects with the liquid outlet (104) of the MVR evaporators.
7. MVR vapo(u)rization systems according to claim 6, it is characterised in that described cold also including condensate trap (8)
Condensate separator (8) includes housing (801), dividing plate (802) and porous aggregate (805), and the dividing plate (802) is arranged at the shell
In body (801), the housing (801) is divided into first chamber (803) and second chamber (804), the first chamber (803)
Bottom connects with the second chamber (804) bottom, and the porous aggregate (805) is filled in the first chamber (803) bottom
With the connectivity part of the second chamber (804) bottom；The liquid outlet (104) of the MVR evaporators and the first chamber (803)
Connection, the second chamber (804) connect with the second inlet (703) of the liquid-liquid heat exchanger.
8. MVR vapo(u)rization systems according to claim 7, it is characterised in that the second liquid is provided with the first chamber (803)
Level sensor (806), the 3rd liquid level sensor (807), second liquid level sensor are provided with the second chamber (804)
(806) setting is highly higher than the 3rd liquid level sensor (807)；Be additionally provided with the first chamber (803) respectively with
The 5th pipeline (109) and the 6th pipeline (110) of tube side (101) connection of the MVR evaporators, the 5th pipeline (109)
The height of pump orifice (1091) be less than the height of second liquid level sensor (806), and greater than or equal to the described 3rd
The height of liquid level sensor (807), the height of the pump orifice (1101) of the 6th pipeline (110) pass less than the 3rd liquid level
The height of sensor (807).
9. MVR vapo(u)rization systems according to claim 7, it is characterised in that second chamber (804) bottom also with it is described
Cooling line (3) connects.
10. MVR vapo(u)rization systems according to claim 1, it is characterised in that be arranged in parallel on the cooling line (3)
Switch valve (301) and proportioning valve (302).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458524A (en) * | 2018-03-30 | 2018-08-28 | 北京石油化工学院 | A kind of ice slurry preparation system |
| CN109722269A (en) * | 2019-01-16 | 2019-05-07 | 林永波 | A kind of delayed coking coke drum mechanical steam recompression pre-heating technique |
| CN114504838A (en) * | 2022-02-08 | 2022-05-17 | 沃力雅环保科技(上海)有限公司 | High-temperature continuous evaporation crystallization equipment and crystallization process thereof |
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|---|---|---|---|---|
| CN108458524A (en) * | 2018-03-30 | 2018-08-28 | 北京石油化工学院 | A kind of ice slurry preparation system |
| CN108458524B (en) * | 2018-03-30 | 2023-09-22 | 北京石油化工学院 | Ice slurry preparation system |
| CN109722269A (en) * | 2019-01-16 | 2019-05-07 | 林永波 | A kind of delayed coking coke drum mechanical steam recompression pre-heating technique |
| CN114504838A (en) * | 2022-02-08 | 2022-05-17 | 沃力雅环保科技(上海)有限公司 | High-temperature continuous evaporation crystallization equipment and crystallization process thereof |
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