CN109107204A - A kind of system and method that function of mechanical steam recompression system concentrating degree can be improved - Google Patents
A kind of system and method that function of mechanical steam recompression system concentrating degree can be improved Download PDFInfo
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- CN109107204A CN109107204A CN201811204629.2A CN201811204629A CN109107204A CN 109107204 A CN109107204 A CN 109107204A CN 201811204629 A CN201811204629 A CN 201811204629A CN 109107204 A CN109107204 A CN 109107204A
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- evaporator
- afterburner
- pipeline
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- compressor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
Abstract
The present invention relates to chemical industry and environment protection fields, specifically a kind of system and method that function of mechanical steam recompression system concentrating degree can be improved, including evaporator, compressor, afterburner and discharging pump, the bottom concentration material discharge port of evaporator is connected with afterburner by pipeline；Afterburner top vapor phase exit is connected with base of evaporator vapour phase import by pipeline；Evaporator is connected with compressor inlet by pipeline, and compressor outlet is connect with evaporator shell side steam inlet by pipeline；Concentration material discharge port is connected with discharging pump by pipeline again for afterburner bottom, and discharging pump discharge is divided into two-way: a-road-through piping is connected with afterburner, and a-road-through piping is connected with product storage tank.In a kind of system and method that function of mechanical steam recompression system concentrating degree can be improved proposed by the present invention, concentration material after the concentration of function of mechanical steam recompression system has also carried out heat exchange again before discharge system with afterburner, and concentrating degree is high by 5 ~ 20% compared to traditional concurrent heating scheme.
Description
Technical field
The present invention relates to chemical industry and environment protection field, function of mechanical steam recompression system concentration journey is can be improved in specifically one kind
The system and method for degree.
Background technique
Mechanical vapor recompression technology is a kind of widely applied power-saving technology of current chemical industry evaporating concentration process, such as salt
The fields such as concentrate, organic matter recycling concentrate, sea water desalination.Its core is the low temperature that will be generated in evaporation process, low-pressure steam
Become high temperature and high pressure steam after mechanical compression, and then is re-used as heat source and is used.Mechanical vapor recompression technology is not
A large amount of latent heat in low-grade steam have only been recycled, the energy has been saved, and have been also greatly reduced needed for Low Temperature Steam condensation
Cooling capacity reduces the operating cost of evaporation process.
105363227 A of patent No. CN discloses a kind of function of mechanical steam recompression system and the mechanical steaming based on the system
Vapour recompression method.Concurrent heating heat source when this method is used using water as the steam generator of medium as system thermal deficiency, steams
The water vapour that vapour generator generates enters compressor together with the steam that material steam generates, and steams after compression as material solution
Pyrotoxin.Although this method concurrent heating can maintain system to run, additional heat utilization rate is not high, and material concentrating degree does not improve.
Under ideal stable state, other than vapour compression machine is to system acting, function of mechanical steam recompression is concentrated by evaporation system
Extraneous offer additional energy is no longer provided after system stable operation.But in actual operation, there are dissipation of energy losses for system, such as
The heat etc. that the heat and steam condensate that heat leakage caused by system heat preservation not enough, concentration material discharging are taken away are taken away, steams
When vapour compressor can not make up the heat loss of system to the acting of system, if carrying out additional concurrent heating, system to system not in time
Steady operational status will be difficult to keep.Currently, being usually with straight to the heat supplement of function of mechanical steam recompression evaporation concentration system
The form for connecing supplement steam carries out, the heat source of the secondary steam of fresh steam and compressor outlet together as evaporator.To system
The heat additionally supplemented ensure that the stable operation of system, but the heat that traditional scheme additionally supplements cannot improve stable state
To the concentrating degree of material, heat is not sufficiently efficient to be utilized lower system.
Summary of the invention
In order to overcome the above problem of the existing technology, existing one kind especially set out is adaptable, journey is concentrated in concentration material
The system and method that function of mechanical steam recompression system concentrating degree can be improved that degree is high, capacity usage ratio is high.
To realize the above-mentioned technical purpose, technical scheme is as follows:
A kind of system that function of mechanical steam recompression system concentrating degree can be improved proposed by the present invention, technical solution system are as follows:
A kind of system that function of mechanical steam recompression system concentrating degree can be improved, it is characterised in that: including evaporator, compressor,
The bottom concentration material discharge port of afterburner and discharging pump, the evaporator is connected with the afterburner by pipeline；The benefit
Hot device top vapor phase exit is connected with base of evaporator vapour phase import by pipeline；The evaporator and compressor inlet pass through pipe
Road is connected, and the compressor outlet is connect with evaporator shell side steam inlet by pipeline；Afterburner bottom concentrate again
Material discharge port is connected with discharging pump by pipeline, and the discharging pump discharge is divided into two-way: being used as all the way and is cycled through pipeline and mend
Hot device is connected, and is connected all the way by pipeline with product storage tank as discharging.
Further, a settable washing separation device on the pipeline between the evaporator and compressor inlet, removal
Evaporator evaporation generates the component that is concentrated in steam, improves steam-purity value.Washing separation device can be spray column, washing
Tower, rectifying column etc. have the device of washing separation function.
Feed storage tank is connected by feed pump with heat exchanger, the heat exchanger and the evaporator and condensate liquid storage tank phase
Even.
Automatic flow control system, base of evaporator are set on the pipeline with evaporator bottoms material discharge port
Pumping form can be used in concentration material conveying, can also realize concentrate by adjusting the relative mounting location of evaporator and afterburner
Expect flow by gravity conveying, preferably flow by gravity conveys.
Fluid level controller, the circulating line of the discharging pump discharge is arranged in the afterburner, and the pressure as afterburner follows
Endless tube road；The discharge pipe of discharging pump is provided with flow control system.
This system uses automatic control mode, including but not limited to following control mode: PLC control, DCS control etc..
The form of the afterburner is including but not limited to following form: dividing wall type heat exchanger, electric heater and electromagnetic radiation
Heater.
The mode of the external heat source of the afterburner includes, but are not limited to, the following ways: electric heating, steam heating and hydrothermal solution
The heating of body medium.
A method of function of mechanical steam recompression system concentrating degree can be improved, technical solution process is as follows:
Extraneous offer additional heat is needed since heat dissipation loss is greater than compressor work in function of mechanical steam recompression system
When, the concentration material outlet of base of evaporator is connected with afterburner, and the concentration material in evaporator becomes after entering afterburner heating
At vehicle repair major；After vehicle repair major separation, vapour phase enters the supplement heat inside vapo(u)rization system as function of mechanical steam recompression system
Amount, and enter compressor together with the secondary steam that evaporator generates, evaporimeter thermal source is used as after compression heating；Through afterburner
Remaining concentration material again is as concentration material product through discharging pump discharge system after further heating is concentrated.
Further, the specific steps are as follows:
S1, evaporator bottoms material enter afterburner through pipeline, and concentration material becomes vehicle repair major after afterburner heats,
Vapour phase therein is entered in evaporator through pipeline by base of evaporator vapour phase import, the secondary steam one generated with evaporator evaporation
It rises and compressor is entered by pipeline；Become high temperature and high pressure steam after compressor compresses, as the heat source of evaporator, passes through pipeline
Into evaporator shell side heating evaporation feeding liquid；Steam heating feeding liquid after become condensate liquid, enter back into heat exchanger preheating by into
The feeding liquid of material pump conveying, condensate liquid finally enter condensate tank.
S2, concentration material become vehicle repair major after afterburner heats, liquid phase therein again concentration material by pipeline through going out
Material pump is divided into two-way: a-road-through piping enters afterburner, into circulation；A-road-through piping is expelled to product storage tank, as
Discharging.
Further, the vapour phase that the afterburner non-heated extract material generates, can also enter in pipeline through pipeline, steam with evaporator
The secondary steam that hair generates passes through pipeline together and enters compressor, becomes high temperature and high pressure steam after compressor compresses, as steaming
Send out the heat source of device.
The liquid phase that afterburner obtains in a kind of method that function of mechanical steam recompression system concentrating degree can be improved is dense again
For contracting material under the consumption of system identical energy, concentrating degree is higher by 5 ~ 20% than traditional concurrent heating scheme.
The method is suitable for the evaporation concentration system of organic admixture and its aqueous solution and salting liquid.
Further, the function of mechanical steam recompression system suitable for organic matter and the not azeotropic system of water and organic admixture
System, the especially concentration systems of or mixtures thereof ethylene glycol, propylene glycol or diethylene glycol (DEG) aqueous solution.
Afterburner generates steam using the concentration material of external heat source heated mechanical vapor recompression system evaporator discharge,
Generated steam is as additional heat, into vapo(u)rization system.
Afterburner generates steam using the concentration material of external heat source heated mechanical vapor recompression system evaporator discharge,
Generated steam as additional heat, by evaporator or enter secondary steam pipeline before compressor or compressor into
Pipeline, equipment before port etc. enter inside function of mechanical steam recompression vapo(u)rization system, the secondary steam one generated with evaporator
It rises and enters compressor, including but not limited to following approach: base of evaporator air inlet, compressor inlet, compressor inlet
Pipeline etc. before.
Further, a settable washing separation device on the pipeline between evaporator and compressor inlet, removal evaporation
Device evaporation generates the component that is concentrated in steam, improves steam-purity value.Washing separation device can be spray column, scrubbing tower, essence
Evaporate the device that tower etc. has washing separation function.
The advantages of the present invention:
1, relative to traditional concurrent heating scheme, it is proposed by the present invention it is a kind of function of mechanical steam recompression system concentrating degree can be improved be
In system and method, the concentration material after the concentration of function of mechanical steam recompression system is also carried out with afterburner again before discharge system
Heat exchange, concentrating degree are high by 5 ~ 20% compared to traditional concurrent heating scheme.In the present invention, the heat of extraneous additional injected system
There are two effects: first is that making up the heat loss of system, guaranteeing system stable operation；Second is that dense through function of mechanical steam recompression system
Concentration material after contracting carries out further heating concentration, improves the concentrating degree of concentration material.In traditional concurrent heating scheme, outside
The heat of the additional injected system in boundary can only tell on one, will not tell on two, so invention increases extraneous additional notes
The purposes for entering the heat of system significantly improves the concentrating degree of concentration material, higher by 5 ~ 20% than traditional concurrent heating scheme, energy benefit
With rate more sufficiently, effect it is more preferable.
2, it finds particular application to increase in the concentration process of ebullioscopic material with concentration, can not increase
In the case where vapour compression machine temperature rise ability, the concentrating degree of concentration material is further increased.
3, system heating when driving can be directly used in by concentration using concurrent heating scheme of the invention when system is driven,
Be conducive to make full use of driving heat.
4, technical solution of the present invention process is succinct, and strong operability is applied widely, and capacity usage ratio is high, can answer extensively
For in all kinds of function of mechanical steam recompression systems.
Detailed description of the invention
Fig. 1 is a kind of system and method process that function of mechanical steam recompression system concentrating degree can be improved proposed by the present invention
Schematic diagram
In figure: 1- evaporator, 2- compressor, 3- feed storage tank, 4- afterburner, 5- feed pump, 6- heat exchanger, 7- discharging pump, 8-
Product storage tank, 9- washing separation device, 10- condensate tank.
Specific embodiment
To better illustrate the present invention, technical solution of the present invention is carried out more below in conjunction with attached drawing, and by embodiment
Add detailed description, the embodiment described is a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
Technical solution, every other embodiment obtained is all without making creative work by those skilled in the art
Belong to the scope of protection of the invention.
Embodiment 1
A kind of system that function of mechanical steam recompression system concentrating degree can be improved includes evaporator 1, compressor 2, afterburner 4 and goes out
Material pump 7, the bottom concentration material discharge port of the evaporator 1 is connected with the afterburner 4 by pipeline；On the afterburner 4
Portion's vapor phase exit is connected with 1 bottom vapour phase import of evaporator by pipeline；The evaporator 1 passes through pipeline with 2 import of compressor
It is connected, the outlet of compressor 2 is connect with 1 shell side steam inlet of evaporator by pipeline；4 bottom of afterburner concentrate again
Material discharge port is connected with discharging pump 7 by pipeline, and the discharging pump 7 outlet is divided into two-way: all the way conduct cycle through pipeline and
Afterburner 4 is connected, and is connected all the way by pipeline with product storage tank 8 as discharging.
Further, a settable washing separation device 9 on the pipeline between 2 import of the evaporator 1 and compressor, goes
Except evaporator 1 evaporates the component that is concentrated generated in steam, steam-purity value is improved.Washing separation device 9 can be spray column, wash
Wash the device that tower, rectifying column etc. have washing separation function.
Feed storage tank 3 is connected by feed pump 5 with heat exchanger 6, and the heat exchanger 6 is stored up with the evaporator 1 and condensate liquid
Case is connected.
Automatic flow control system, 1 bottom of evaporator are set on the pipeline with 1 bottom concentration material discharge port of evaporator
Pumping form can be used in concentration material conveying in portion's, can also realize by adjusting the relative mounting location of evaporator 1 and afterburner 4 dense
The conveying of contracting material gravity self-flowing pastefill, preferably flow by gravity.
Fluid level controller, the circulating line that the discharging pump 7 exports, the pressure as afterburner 4 is arranged in the afterburner 4
Circulating line；The discharge pipe of discharging pump 7 is provided with flow control system.
This system uses automatic control mode, including but not limited to following control mode: PLC control, DCS control etc..
The form of the afterburner 4 is including but not limited to following form: dividing wall type heat exchanger, electric heater and electromagnetic radiation
Heater.
The mode of the external heat source of the afterburner 4 includes, but are not limited to, the following ways: electric heating, steam heating and hydrothermal solution
The heating of body medium.
Embodiment 2
A method of function of mechanical steam recompression system concentrating degree can be improved, technical solution process is as follows:
Extraneous offer additional heat is needed since heat dissipation loss is greater than the acting of compressor 2 in function of mechanical steam recompression system
When, the concentration material outlet of 1 bottom of evaporator is connected with afterburner 4, and the concentration material in evaporator 1 enters the heating of afterburner 4
After become vehicle repair major；After vehicle repair major separation, vapour phase enters inside vapo(u)rization system as function of mechanical steam recompression vapo(u)rization system
Additional heat, and enter compressor 2 together with the secondary steam that evaporator 1 generates, as the heat of evaporator 1 after compression heating
Source；Remaining concentration material again, which is discharged as concentration material product through discharging pump 7, after afterburner 4 further heating concentration is
System.
Further, the specific steps are as follows:
S1,1 bottom concentration material of evaporator enter afterburner 4 through pipeline, and concentration material becomes vapour-liquid two after the heating of afterburner 4
Phase, vapour phase therein are entered in evaporator 1 through pipeline by 1 bottom vapour phase import of evaporator, are generated with the evaporation of evaporator 1 secondary
Steam passes through pipeline together and enters compressor 2；Become high temperature and high pressure steam after the compression of compressor 2, the heat as evaporator 1
Source enters 1 shell side heating evaporation feeding liquid of evaporator by pipeline；Become condensate liquid after steam heating feeding liquid, enters back into and change
Hot device 6 preheats the feeding liquid conveyed by feed pump 5, and condensate liquid finally enters condensate tank 10.
S2, concentration material become vehicle repair major after the heating of afterburner 4, liquid phase therein again concentration material by pipeline through going out
7 points of material pump is two-way: a-road-through piping enters afterburner 4, into circulation；A-road-through piping is expelled to product storage tank 8, makees
For discharging.
Further, the vapour phase that the 4 non-heated extract material of afterburner generates, can also enter in pipeline through pipeline, with evaporator 1
The secondary steam that evaporation generates passes through pipeline together and enters compressor 2, becomes high temperature and high pressure steam after the compression of compressor 2, makees
For the heat source of evaporator 1.
The liquid phase that afterburner 4 obtains in a kind of method that function of mechanical steam recompression system concentrating degree can be improved is dense again
For contracting material under the consumption of system identical energy, concentrating degree is higher by 5 ~ 20% than traditional concurrent heating scheme.
The method is suitable for the evaporation concentration system of organic admixture and its aqueous solution and salting liquid.
This method is suitable for the function of mechanical steam recompression system of the not azeotropic system of organic matter and water and organic admixture,
The especially concentration systems of or mixtures thereof ethylene glycol, propylene glycol or diethylene glycol (DEG) aqueous solution.
Afterburner 4 generates steaming using the concentration material that external heat source heated mechanical vapor recompression system evaporator 1 is discharged
Vapour, generated steam is as additional heat, into vapo(u)rization system.
Afterburner 4 generates steaming using the concentration material that external heat source heated mechanical vapor recompression system evaporator 1 is discharged
Vapour, generated steam pass through the secondary steam pipeline or pressure before evaporator 1 or entrance compressor 2 as additional heat
Pipeline, equipment before 2 air inlet of contracting machine etc. enter function of mechanical steam recompression internal system, the secondary steaming generated with evaporator 1
Vapour enters compressor 2 together, including but not limited to following approach: 1 bottom air inlet of evaporator, 2 air inlet of compressor, compressor
Pipeline etc. before 2 air inlets.
Further, a settable washing separation device 9 on the pipeline between 2 import of evaporator 1 and compressor, removal are steamed
The hair evaporation of device 1 generates the component that is concentrated in steam, improves steam-purity value.Washing separation device 9 can be spray column, washing
Tower, rectifying column etc. have the device of washing separation function.
Embodiment 3
With reference to the accompanying drawing 1, to existing machinery vapor recompression vapo(u)rization system concurrent heating scheme and new method proposed by the present invention into
Row comparative illustration:
The heat patching method of existing tradition machinery vapor recompression system: in function of mechanical steam recompression system due to heat dissipation loss
It does work greater than vapour compression machine 2, when extraneous offer additional heat is provided, is connected in compressor 2 with 1 shell side steam inlet of evaporator
One steam branch pipe is set on pipeline, for external world's supplement steam to be input in 1 shell side of evaporator, with replenishment system heat damage
It loses, guarantees that system operates normally.
Fig. 1 is a kind of system and method process that function of mechanical steam recompression system concentrating degree can be improved proposed by the present invention
Schematic diagram.Process is as follows: outside function of mechanical steam recompression system is since heat dissipation loss is greater than the acting of vapour compression machine 2, needs
When boundary provides additional heat, the concentration material outlet of 1 bottom of evaporator is connected with afterburner 4, and 1 concentration material of evaporator enters benefit
Hot device 4 becomes vehicle repair major after heating；After vehicle repair major separation, vapour phase enters inside vapo(u)rization system as function of mechanical steam recompression
The additional heat of system, and enter vapour compression machine 2 together with the secondary steam that evaporator 1 generates, the conduct after compression heating
1 heat source of evaporator；Remaining concentration material again is as concentration material product through discharging pump after afterburner 4 further heating concentration
7 discharge systems.
The concurrent heating scheme and new method proposed by the present invention for comparing existing tradition machinery vapor recompression system, when machinery steams
When vapour recompresses the system needs additional additional heat in the external world:
Use existing traditional concurrent heating scheme: extraneous concurrent heating is directly to input in fresh steam to 1 shell side of evaporator, as mechanical vapour
The concurrent heating of recompression system.In suc scheme, the extraneous heat provided will not to the concentration material that 1 bottom of evaporator is discharged into
Row heating, the heat that the external world provides can not be to the further concentration and evaporation of concentration material, and additional heat utilization rate is low.
Using new method proposed by the present invention: extraneous concurrent heating directly heats the concentration material of 1 bottom of evaporator discharge to produce
Raw steam, steam enter in tool vapor recompression system as additional heat.In scheme proposed by the present invention, external world's supplement heat
Amount directly acts on the concentration material of 1 bottom of evaporator discharge, is evaporated generation steam to concentration material, concentration material is suitable
In further concentrating under the action of extraneous additional heat, concentrating degree is further increased, higher by 5 than existing traditional concurrent heating scheme
~20%；The steam that concentration material generates under the action of extraneous additional heat simultaneously enters conduct in function of mechanical steam recompression system
Concurrent heating ensure that stablizing for system operates normally.The energy of additional heat is significantly improved using new method proposed by the present invention
Utilization rate, process is succinctly reliable, not only ensure that stablizing for system operates normally, but also improve the concentration journey of system concentration material
Degree.
Fig. 1 is a kind of system and method process that function of mechanical steam recompression system concentrating degree can be improved proposed by the present invention
Schematic diagram.In function of mechanical steam recompression system since heat dissipation loss is greater than the acting of vapour compression machine 2, extraneous offer supplement is needed
When heat, a kind of system that function of mechanical steam recompression system concentrating degree can be improved proposed by the present invention, including evaporator 1, pressure
Contracting machine 2, afterburner 4, discharging pump 7, the 1 bottom concentration material discharge port of evaporator are connected with afterburner 4 by pipeline；It is described
4 top vapor phase exit of afterburner is connected with 1 bottom vapour phase import of evaporator by pipeline；The evaporator 1 and compressor 2 into
Mouth is connected by pipeline, and the outlet of compressor 2 is connect with 1 shell side steam inlet of evaporator by pipeline；4 bottom of afterburner
Portion is connected with discharging pump 7 by pipeline concentration material outlet again, and the outlet of discharging pump 7 is divided into two-way: logical as circulation all the way
Piping is connected with afterburner 4, is connected all the way by pipeline with product storage tank as discharging.
A kind of system that function of mechanical steam recompression system concentrating degree can be improved, steps are as follows for operational process:
S1,1 bottom concentration material of evaporator enter afterburner 4 through pipeline, and concentration material becomes vapour-liquid two after the heating of afterburner 4
Phase, vapour phase are entered in evaporator 1 through pipeline by 1 bottom vapour phase import of evaporator, the secondary steam one generated with the evaporation of evaporator 1
It rises and compressor 2 is entered by pipeline；Become high temperature and high pressure steam after the compression of compressor 2, as the heat source of evaporator 1, passes through
Pipeline enters 1 shell side heating evaporation feeding liquid of evaporator；Become condensate liquid after steam heating feeding liquid, it is pre- to enter back into heat exchanger 6
The feeding liquid that heat is conveyed by feed pump 5, condensate liquid finally enter condensate tank 10.
S2, concentration material become gas-liquid two-phase after the heating of afterburner 4, liquid phase again concentration material by pipeline through discharging pump 7
Be divided into two-way: a-road-through piping enters afterburner 4, into circulation；A-road-through piping is expelled to product storage tank, as out
Material.Further, the vapour phase that 4 non-heated extract material of afterburner generates, can also enter in pipeline through pipeline, evaporate with evaporator 1
The secondary steam of generation passes through pipeline together and enters compressor 2, becomes high temperature and high pressure steam after the compression of compressor 2, as steaming
Send out the heat source of device 1.It is undergone technological transformation using what such mode can be convenient to built device.
Automatic flow control system is set on the discharge pipe of the 1 bottom concentration material of evaporator, and liquid is arranged in afterburner 4
Level controller；Pumping form can be used in the conveying of its material, can also be by adjusting the relative mounting location of evaporator 1 and afterburner 4
Realize the conveying of concentration material flow by gravity, preferably flow by gravity conveys.
The outlet of the discharging pump 7 setting circulating line, the forced circulation pipeline as afterburner 4；7 discharge pipe of discharging pump
Flow control system is set.
A kind of system that function of mechanical steam recompression system concentrating degree can be improved proposed by the present invention, using automatic control side
Formula, including but not limited to following control mode: PLC control, DCS control etc..
It should be noted that a settable washing separation device 9 on pipeline between 2 import of evaporator 1 and compressor,
The removal evaporation of evaporator 1, which generates in steam, is concentrated component, improves steam-purity value, washing separation device 9 can for spray column,
Scrubbing tower/rectifying column etc. has the device of washing separation function.
A kind of system and method that function of mechanical steam recompression system concentrating degree can be improved, described in conjunction with described in attached drawing 1
When method handles the concentration of 10% ethylene glycol solution, design parameter is as follows: 2 ton/hours of charging, the ethylene glycol solution that concentration is 10% pass through
After the concentration of function of mechanical steam recompression system, the ethylene glycol concentration liquid that concentration is 55% is obtained.When function of mechanical steam recompression vapo(u)rization system
When needing to supplement 20KW per hour because of heat loss, using technical solution system provided by the invention, obtained concentrate concentration can
Reach 60%.
A kind of system and method that function of mechanical steam recompression system concentrating degree can be improved, described in conjunction with described in attached drawing 1
When method handles the concentration of 6% diethylene glycol solution, design parameter is as follows: 2 ton/hours of charging, the diethylene glycol solution that concentration is 6% is through machine
After the concentration of tool vapor recompression vapo(u)rization system, the diethylene glycol (DEG) concentrate that concentration is 60% is obtained.It is when function of mechanical steam recompression evaporates
System because of heat loss when needing to supplement 20KW per hour, using concurrent heating technical solution provided by the invention, obtained concentrate concentration
It can reach 70%.
It is in conjunction with attached drawing and to the invention proposes a kind of function of mechanical steam recompression system concentrating degrees that can be improved above
System and method have carried out principle signal description.Those skilled in the art should understand that under the inspiration of the present invention, other people
Member may also make similar method design.It is important to note that without departing from core of the invention objective, Suo Youyu
The similar design of the present invention is within scope of the present invention.
Claims (10)
1. a kind of system that function of mechanical steam recompression system concentrating degree can be improved, it is characterised in that: including evaporator (1), pressure
Contracting machine (2), afterburner (4) and discharging pump (7), bottom concentration material discharge port and the afterburner (4) of the evaporator (1)
It is connected by pipeline；Afterburner (4) the top vapor phase exit is connected with evaporator (1) bottom vapour phase import by pipeline；Institute
State evaporator (1) and be connected with compressor (2) import by pipeline, the compressor (2) outlet and evaporator (1) shell side steam into
Mouth passes through pipeline and connects；Concentration material discharge port is connected with discharging pump (7) by pipeline again for afterburner (4) bottom, described
Discharging pump (7) outlet is divided into two-way: conduct cycles through pipeline and is connected with afterburner (4) all the way, passes through pipe as discharging all the way
Road is connected with product storage tank (8).
2. a kind of system that function of mechanical steam recompression system concentrating degree can be improved according to claim 1, feature exist
In: the evaporator (1) is provided with forced circulation system, and concentration material can also pass through the circulating-pump outlet branch of forced circulation system
The pipeline that road is connected with afterburner (4) enters afterburner (4), and automatic flow control system is arranged on pipeline；The evaporator (1)
Washing separation device (9) are provided on pipeline between compressor (2) import.
3. a kind of system that function of mechanical steam recompression system concentrating degree can be improved according to claim 1, feature exist
In: feed storage tank (3) is connected by feed pump (5) with heat exchanger (6), the heat exchanger (6) and the evaporator (1) and condensation
Liquid storage tank (10) is connected.
4. a kind of system that function of mechanical steam recompression system concentrating degree can be improved according to claim 1, feature exist
In: flow is set on the pipeline that evaporator (1) the bottom concentration material discharge port is connected with afterburner (4) and automatically controls system
The conveying of pumping form can be used in system, evaporator (1) bottom concentration material, can also be by adjusting evaporator (1) and afterburner (4)
Relative mounting location realizes the conveying of concentration material flow by gravity, and preferably flow by gravity conveys.
5. a kind of system that function of mechanical steam recompression system concentrating degree can be improved according to claim 1, feature exist
In: the afterburner (4) is provided with fluid level controller, the circulating line of discharging pump (7) outlet, as afterburner (4)
Forced circulation pipeline；The discharge pipe of discharging pump (7) is provided with flow control system.
6. a kind of system that function of mechanical steam recompression system concentrating degree can be improved according to claim 1, feature exist
In: the form of the afterburner (4) is including but not limited to following form: dividing wall type heat exchanger, electric heater and electromagnetic radiation add
Hot device；The mode of the external heat source of the afterburner (4) includes, but are not limited to, the following ways: electric heating, steam heating and hydrothermal solution
The heating of body medium.
7. a kind of method that function of mechanical steam recompression system concentrating degree can be improved, characterized by the following steps: in machine
When tool vapor recompression system does work since heat dissipation loss is greater than compressor (2) and needs extraneous offer additional heat, steam
The concentration material outlet of hair device (1) bottom is connected with afterburner (4), and the concentration material in evaporator (1) enters afterburner (4) and adds
Become vehicle repair major after heat；After vehicle repair major separation, vapour phase enters inside vapo(u)rization system as function of mechanical steam recompression system
Additional heat, and enter compressor (2) together with the secondary steam that evaporator (1) generates, evaporator is used as after compression heating
(1) heat source；Remaining concentration material again is as concentration material product through discharging pump after afterburner (4) further heating concentration
(7) discharge system.
8. a kind of method that function of mechanical steam recompression system concentrating degree can be improved according to claim 7, feature exist
In: specific step is as follows:
S1, evaporator (1) bottom concentration material enter afterburner (4) through pipeline, and concentration material becomes after afterburner (4) are heated
Vehicle repair major, vapour phase therein are entered in evaporator (1) by evaporator (1) bottom vapour phase import through pipeline, are steamed with evaporator (1)
The secondary steam that hair generates passes through pipeline together and enters compressor (2)；Become high temperature and high pressure steam after compressor (2) compression,
As the heat source of evaporator (1), evaporator (1) shell side heating evaporation feeding liquid is entered by pipeline；After steam heats feeding liquid
Become condensate liquid, enters back into heat exchanger (6) and preheat the feeding liquid conveyed by feed pump (5), condensate liquid finally enters condensate liquid storage
Tank (10)；
S2, concentration material become vehicle repair major after afterburner (4) are heated, liquid phase therein again concentration material by pipeline through discharging
Pump (7) is divided into two-way: a-road-through piping enters afterburner (4), into circulation；A-road-through piping is expelled to product storage tank
(8), as discharging.
9. a kind of method that function of mechanical steam recompression system concentrating degree can be improved according to claim 8, feature exist
In: the vapour phase that afterburner (4) the non-heated extract material generates, through pipeline by including but not limited to approach below: evaporator
(1) pipeline before bottom air inlet, compressor (2) air inlet, compressor (2) air inlet, into function of mechanical steam recompression system
System is internal, as system additional heat.
10. a kind of system and method that function of mechanical steam recompression system concentrating degree can be improved described according to claim 1 ~ 9,
It is characterized by: the system and method is suitable for the evaporation concentration system of organic admixture and its aqueous solution and salting liquid, it is special
It is not the concentration systems of or mixtures thereof ethylene glycol, propylene glycol or diethylene glycol (DEG) aqueous solution.
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