CN107158731A - A kind of condensing reflux system - Google Patents
A kind of condensing reflux system Download PDFInfo
- Publication number
- CN107158731A CN107158731A CN201710532266.4A CN201710532266A CN107158731A CN 107158731 A CN107158731 A CN 107158731A CN 201710532266 A CN201710532266 A CN 201710532266A CN 107158731 A CN107158731 A CN 107158731A
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- valve
- temperature control
- temperature
- control valve
- pipeline
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- 238000010992 reflux Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 230000008676 import Effects 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 33
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 4
- 230000002209 hydrophobic effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000005886 esterification reaction Methods 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000032050 esterification Effects 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/009—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in combination with chemical reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of condensing reflux system, including separated device, condenser, oil water separator and heat exchanger；The import of the condenser is connected with the outlet of the separated device by the first pipeline, the import of the oil water separator is connected with the outlet of the condenser by the second pipeline, the heat exchanger is exported provided with heat transferring medium import and heat transferring medium, the working media import of the heat exchanger is connected with the outlet of the oil water separator by the 3rd pipeline, and the working medium exit port of the heat exchanger is connected with the separated device by the 4th pipeline.The condensing reflux system of the present invention can either be heated the relatively low reflux solvent of temperature by heat exchanger, improve the temperature that solvent enters separated device, the temperature of reflux solvent can be controlled by controlling heat transferring medium flow again, so as to prevent reflux solvent temperature is too high from reaction is generated accessory substance.
Description
Technical field
The present invention relates to a kind of circulatory system, more particularly to a kind of condensing reflux system.
Background technology
Condensing reflux system is quite varied in the application of the industries such as food, medicine, chemical industry.For example, esterification is a kind of
Ester and water are included in reversible reaction, product, generally requires and is carried out in condensing reflux system.If the water in reaction system can not
Quick abjection separation, will influence the positive progress of reaction.Meanwhile, esterification is needed temperature control within the specific limits
It can carry out, if temperature is reduced in course of reaction, then esterification reaction rate can be slack-off or even stops positive reaction process.
As shown in figure 1, existing condensing reflux system is main by separated device 1 ', condenser 2 ' and oil water separator 3 '
Constitute, the reflux solvent molecule and hydrone that are evaporated in separated device 1 ' and a small amount of reactant and esters product can enter
Enter into condenser 2 ', by cooling for condenser 2 ', a part is condensed into liquid, flows into oil water separator 3 ',
The waste gas eductor condenser 2 ' that another part is not condensed.Into the raw material of oil water separator 3 ', product and reflux solvent meeting
Separated, wherein the water in product can be with the drain valve discharge system below oil water separator 3 ', and other parts
Oil water separator 3 ' can be discharged and enter circulation line, and then be circulated again into separated system, the circulation of a new round is carried out.
The major defect of existing condensing reflux system is to enter the reflux solvent temperature of separated device too from circulation line
It is low, amount of heat in separated device can be absorbed, causes reaction rate to reduce or slow down the positive progress of reaction.In addition, from following
The temperature that endless tube road enters the reflux solvent of separated device is uncontrollable, if reflux solvent temperature is too high, can generate reaction
Accessory substance.
So, a kind of condensing reflux system how is proposed, disadvantages mentioned above is can solve the problem that, is that those skilled in the art to be solved
Technical problem certainly.
The content of the invention
It is an object of the invention to provide a kind of condensing reflux system, it can solve the problem that the solvent of existing condensing reflux system is returned
The problem of flowing low temperature and low reaction efficiency.
For up to this purpose, the present invention uses following technical scheme：
A kind of condensing reflux system, including separated device, condenser, oil water separator and heat exchanger；Wherein, it is described cold
The import of condenser is connected with the outlet of the separated device by the first pipeline, the import of the oil water separator with it is described cold
The outlet of condenser is connected by the second pipeline, and the working media import and the outlet of the oil water separator of the heat exchanger pass through
3rd pipeline is connected, and the working medium exit port of the heat exchanger is connected with the separated device by the 4th pipeline.
Preferably, the condensing reflux system also includes controller, and the controller is used to control the heat transferring medium to enter
The heat transferring medium flow of mouth.
Preferably, the first detector unit is provided with the 4th pipeline, is set before the heat transferring medium import
There is the first temperature control valve group；The output end of the control end of the first temperature control valve group and first detector unit
It is connected with controller；First detector unit exports the first temperature signal, first temperature to the controller
Control valve group receives first temperature signal of the controller transmission to control the heat transferring medium flow.
The solvent temperature of the 4th pipeline can be monitored by setting the first detector unit, and then check the heat exchange effect of heat exchanger
Really, so that the flow for exchanging thermal medium is regulated and controled.First temperature control valve group can be adjusted by the solvent temperature monitored
Save the flow of heat transferring medium.First temperature control valve group and the first detector unit are linked by electric control system to be designed,
The temperature feedback that the first detector unit can be detected is to controller, so as to control the first temperature control valve group regulating valve
The aperture of door, and then realize the auto-control of heat transferring medium flow.
Preferably, it is provided with hydrophobic valve group after the heat transferring medium outlet.Hydrophobic valve group can discharge steam formation
Condensate.
Preferably, the first temperature control valve group includes the first valve, the first temperature control valve and the being arranged in series
Two valves；When the first temperature control valve normal work, first valve and second valve are in normally open；
When repairing first temperature control valve, first valve and second valve are closed.
Preferably, the first temperature control valve group also include with first valve, first temperature control valve and
First by-passing valve of second valve in parallel；When the pipeline where first temperature control valve breaks down or beyond specified
During flow, first by-passing valve is opened.
When the first temperature control valve is repaired, the first by-passing valve in parallel therewith can be opened, without prejudice to is entirely
The normal work of system；Meanwhile, two valves of the first temperature control valve both sides are connected on, i.e. the first valve and the second valve will be closed
Close, and reach zero leakage, now can just repair the first temperature control valve.
Preferably, circulation line is provided with the 3rd pipeline, the controller also controls the stream of the circulation line
Amount.
Preferably, second temperature detecting element is provided with the import of the circulation line, the circulation line includes second
Temperature control valve group；The control end of the second temperature control valve group and the output end of the second temperature detecting element with control
Device processed is connected；The second temperature detecting element exports second temperature signal, the second temperature control valve to the controller
Group receives the second temperature signal of the controller transmission to adjust the flow of the circulation line.
The setting of second temperature control valve group can be played by monitoring the temperature of oil water separator outlet to control back
Flow the effect of solvent flux.Second temperature control valve group and second temperature detecting element are all connected on controller, can be passed through
The temperature feedback of second temperature detecting element controls the valve opening of second temperature control valve group, and then controls circulation line
Flow.
Preferably, the circulation line also includes pump group, and the pump group is connected with the second temperature control valve group.
Setting for pump group can give the supercharging of the solvent in circulation line, so that solvent can reach circulation line outlet,
Solvent is prevented to be recycled to separated device because the pressure loss is excessive.
Preferably, the circulation line also includes flow instruction valve group；The pump group, second temperature control valve group and described
Flow indicates valve group series connection；The flow indicates that valve group flows through the instantaneous delivery of pipeline to show.
Flow indicate valve group can clearly observe be pressurized through pump after solvent flow.
The beneficial effect of condensing reflux system is in the present invention：
1) heat exchanger is added between the outlet of oil water separator and separated device, can be molten by the relatively low backflow of temperature
Agent is heated, and is improved the temperature that solvent enters separated device, thus can be accelerated distillation speed；
2) install the first detector unit additional between the working medium exit port and separated device of heat exchanger, and with heat exchange
The first temperature control valve group at the heat transferring medium import of device is electrically connected to each other, and the first detector unit can be by reflux solvent
Temperature feedback give the first temperature control valve group, so as to adjust the heat exchange amount of heat exchanger by controlling the flow of heat exchanging fluid,
The effect of control reflux solvent temperature is played, so as to prevent reflux solvent temperature is too high from reaction is generated accessory substance.
Brief description of the drawings
The condensing reflux system schematic that Fig. 1 provides for prior art；
Fig. 2 is condensing reflux system schematic in the present invention.
In figure：
1 '-separated device；2 '-condenser；3 '-oil water separator；
1- separated devices；2- condensers；3- oil water separators, 31- draining valves；
4- heat exchangers, 41- the first temperature control valve groups, the hydrophobic valve groups of 42-, the valves of 43- the 6th, the temperature detections of 44- first
Element；
The valves of 411- first, the temperature control valves of 412- first, the valves of 413- second, the by-passing valves of 414- first；
The valves of 421- the 3rd, 422- drain valves, the by-passing valves of 423- second；
5- circulation lines, 51- second temperature detecting elements, 52- pump groups, 53- flows indicate valve group, 54- second temperature controls
Valve group processed；
The valves of 541- the 4th, 542- second temperature control valves, the valves of 543- the 5th, the by-passing valves of 544- the 3rd.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
As shown in Fig. 2 present embodiment discloses a kind of condensing reflux system, including separated device 1, condenser 2, profit
Separator 3 and heat exchanger 4；Wherein, the import of condenser 2 is connected with the outlet of separated device 1 by the first pipeline, profit point
It is connected from the import of device 3 with the outlet of condenser 2 by the second pipeline, working media import and the oil water separator 3 of heat exchanger 4
Outlet by the 3rd pipeline be connected, the working medium exit port of heat exchanger 4 is connected with separated device 1 by the 4th pipeline.
The first detector unit 44 is provided with 4th pipeline of the present embodiment.Heat exchanger 4 enters provided with heat transferring medium
Mouth and heat transferring medium outlet, are provided with the first temperature control valve group 41 before heat transferring medium import, heat transferring medium is set after outlet
It is equipped with hydrophobic valve group 42.The control end of first temperature control valve group 41 and the output end of the first detector unit 44 with control
Device is connected；First detector unit 44 exports the first temperature signal to controller, and the first temperature control valve group 41 receives control
The temperature signal of device can receive the first temperature detection to adjust the flow of the heat transferring medium, i.e. the first temperature control valve group 41
The temperature signal of element 44, and control valve aperture is come with this temperature signal, so as to realize the regulation of flow.In the present embodiment
First temperature control valve group 41 includes the first valve 411, the first temperature control valve 412 and the second valve 413 being arranged in series, with
And first by-passing valve 414 in parallel with the first valve 411, the first temperature control valve 412 and the second valve 413；When the first temperature
During 412 normal work of control valve, the first valve 411 and the second valve 413 are in normally open；When first temperature control valve
Pipeline where 412 is broken down or during beyond metered flow, and the first valve 411 and the second valve 413 are closed, and
Open the first by-passing valve 414.
When the first temperature control valve 412 is repaired, the first by-passing valve 414, Bu Huifang in parallel therewith can be opened
Hinder the normal work of system, the first by-passing valve 414 selects stop valve；When repairing the first temperature control valve 412, temperature control is connected on
The first valve 411 and the second valve 413 of the both sides of valve 452 processed are intended to close, and reach zero leakage, now can just repair first
Temperature control valve 412, therefore, the first by-passing valve can select ball valve, using the property of ball valve so as to prevent temperature control valve 452
Leaked in occurring.
Hydrophobic valve group 42 includes the 3rd valve 421 and drain valve 422 that are arranged in series, and with the 3rd valve 421
Second by-passing valve 423 in parallel with the drain valve 462.The effect of hydrophobic valve group 42 is automatic exclusion heat transferring medium outlet conduit
In steam condensate and the on-condensible gas such as air, and not leak-off steam makes full use of steam latent heat to prevent from sending out in jet chimney
Unboiled water is hammered into shape.
The heat exchanger 4 of the present embodiment is parallel with the 6th valve 43, when the temperature of reflux solvent is in normal range (NR), this kind
Being arranged in parallel can make solvent not flow into separated device 1 by heat exchanger 4, save the energy.
Circulation line 5 is provided with 3rd pipeline of the present embodiment, circulation line 5 includes pump group 52, flow and indicates valve group
53 and second temperature control valve group 54；Second temperature control valve group 54, pump group 52 indicate that valve group 53 is connected with flow.Pump group 52 is set
The two pumps of parallel connection are set to, wherein one need to be only opened when using, allows another to be in suspended state, ensure that pump is discontinuous
Work, so as to extend the service life of pump.
The setting of pump group 52 can give fluid pressurized, prevent solvent to be recycled to separated because the pressure loss is excessive
Device.Flow indicates that valve group 53 flows through the instantaneous delivery of pipeline to show, can clearly observe the stream of solvent after being pressurized through pump
Amount.The setting of second temperature control valve group 54 can be played by monitoring the temperature of oil water separator outlet to control backflow molten
The effect of agent flux.
Second temperature detecting element 51 is provided with the import of circulation line 5.The control end of second temperature control valve group 54 and
The output end of second temperature detecting element 51 is connected with controller；Second temperature detecting element 51 is warm to controller output second
Signal is spent, second temperature control valve group 54 can receive the second temperature signal of controller to adjust the stream of the circulation line 5
Amount.
Second temperature control valve group 54 in the present embodiment includes the 4th valve 541, the second temperature control being arranged in series
The valve 543 of valve 542 and the 5th, and the in parallel with the 4th valve 541, the valve 543 of second temperature control valve 542 and the 5th the 3rd
By-passing valve 544.The selection of the working method and valve species of the temperature control valve group 41 of second temperature control valve group 54 and first
All same, when second temperature 542 normal work of control valve, the 4th valve 541 and the 5th valve 543 are in normally open；When
Pipeline where the second temperature control valve 542 breaks down or during beyond metered flow, the 4th valve 541 and the 5th valve
543 are closed, and open the 3rd by-passing valve 544.
The concrete operations mode that the present embodiment carries out esterification is as follows：Heat in separated device 1, separated device 1
Alcohol and acid react, generation ester and water.These reactants, product and solvent enter in condenser 2 along the first pipeline,
Cooled down in condenser 2, some waste gas can be discharged with the exhaust-gas treatment pipeline of condenser 2, other condensed fluid is along the
Two pipelines enter in oil water separator 3.Water pass through the bottom of oil water separator 3 the discharge system of draining valve 31, reactant, generation
The oil-drain pipe of ester and reflux solvent along oil water separator 3 enters in circulating line.When liquid level oily in oil water separator 3 is less than
During the setting height(from bottom) of oil-drain pipe, draining valve 31 can be first opened, after water base after the discharge of draining valve 31, draining valve is closed
31, the magnetic valve connected on same pipeline is then opened, reflux solvent is transported to the import of circulation line 5.
When after the supercharging of pump group 53, solvent flows through wherein one parallel pipeline that flow indicates valve group 53, to detect
The instantaneous delivery of fluid after supercharging.Second temperature control valve group 54 is flowed through afterwards, and second temperature control valve group 54 can be according to
The temperature value that two detector units 51 are determined controls flow, when the temperature value that second temperature detecting element 51 is determined is less than setting
During definite value, the 6th valve 43 is closed, preferred plate type heat exchanger in heat exchanger 4, the present embodiment is opened, reflux solvent is added
Heat.Solvent after heating is entered in separated device 1 by the 4th pipeline.
The first detector unit 44 is provided with 4th pipeline, the first temperature control valve group 41 can be according to the first temperature
The temperature value that detecting element 44 is determined controls flow, when this temperature value is less than setting value, the first temperature control valve 412
Valve opening increase, flows through more low-pressure steams in heat transferring medium import, so as to realize that high-efficiency thermal is exchanged, make to enter distillation
The solvent temperature of separator reaches setting value；When this temperature value is higher than setting value, the valve of the first temperature control valve 412 is opened
Degree reduces, and the low-pressure steam flowed through in heat transferring medium import tails off, so as to reduce the solvent temperature into separated device 1.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented not by aforesaid way
Limitation, as long as employ the present invention design and technical scheme carry out various unsubstantialities improvement, or it is not improved will
The design and technical scheme of the present invention directly applies to other occasions, within protection scope of the present invention.
Claims (10)
1. a kind of condensing reflux system, it is characterised in that including separated device (1), condenser (2), oil water separator (3) and
Heat exchanger (4)；The import of the condenser (2) is connected with the outlet of the separated device (1) by the first pipeline, the oil
The import of separator (3) is connected with the outlet of the condenser (2) by the second pipeline, and the heat exchanger (4) is provided with and changed
Thermal medium inlet and heat transferring medium outlet, the working media import of the heat exchanger (4) and the outlet of the oil water separator (3)
It is connected by the 3rd pipeline, the working medium exit port of the heat exchanger (4) passes through the 4th pipeline phase with the separated device (1)
Even.
2. condensing reflux system according to claim 1, it is characterised in that also including controller, the controller is used for
Control the heat transferring medium flow of the heat transferring medium import.
3. condensing reflux system according to claim 2, it is characterised in that be provided with the first temperature on the 4th pipeline
Detecting element (44)；The first temperature control valve group (41) is provided with before the heat transferring medium import；
The control end of the first temperature control valve group (41) and the output end of first detector unit (44) with control
Device processed is connected to control the heat transferring medium flow；
First detector unit (44) exports the first temperature signal, the first temperature control valve group to the controller
(41) first temperature signal of the controller transmission is received to adjust the heat transferring medium flow of the heat transferring medium import.
4. condensing reflux system according to claim 3, it is characterised in that be provided with after the heat transferring medium outlet thin
Water valve group (42).
5. condensing reflux system according to claim 4, it is characterised in that the first temperature control valve group (41) includes
The first valve (411), the first temperature control valve (412) and the second valve (413) being arranged in series；When first temperature control
During valve (412) normal work, first valve (411) and second valve (413) are in normally open；When maintenance is described
During the first temperature control valve (412), first valve (411) and second valve (413) are closed.
6. condensing reflux system according to claim 5, it is characterised in that the first temperature control valve group (41) is also wrapped
Include by first in parallel with first valve (411), first temperature control valve (412) and second valve (413)
Port valve (414)；When the pipeline where first temperature control valve (412) breaks down or during beyond metered flow, institute is opened
State the first by-passing valve (414).
7. condensing reflux system according to claim 2, it is characterised in that be provided with circulation line on the 3rd pipeline
(5), the controller also controls the flow of the circulation line (5).
8. condensing reflux system according to claim 7, it is characterised in that be provided with the import of the circulation line (5)
Second temperature detecting element (51), the circulation line (5) includes second temperature control valve group (54)；
The control end of the second temperature control valve group (54) and the output end of the second temperature detecting element (51) with control
Device processed is connected；
The second temperature detecting element (51) exports second temperature signal, the second temperature control valve group to the controller
(54) the second temperature signal of the controller transmission is received to adjust the flow of the circulation line (5).
9. condensing reflux system according to claim 8, it is characterised in that the circulation line (5) also includes pump group
(52), the pump group (52) is connected with the second temperature control valve group (54).
10. condensing reflux system according to claim 9, it is characterised in that the circulation line (5) also refers to including flow
Show valve group (53)；The pump group (52), the second temperature control valve group (54) and the flow indicate valve group (53) series connection；Institute
State flow and indicate that valve group (53) flows through the instantaneous delivery of pipeline to show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710532266.4A CN107158731A (en) | 2017-07-03 | 2017-07-03 | A kind of condensing reflux system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710532266.4A CN107158731A (en) | 2017-07-03 | 2017-07-03 | A kind of condensing reflux system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107158731A true CN107158731A (en) | 2017-09-15 |
Family
ID=59827855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710532266.4A Pending CN107158731A (en) | 2017-07-03 | 2017-07-03 | A kind of condensing reflux system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107158731A (en) |
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| CN107715806A (en) * | 2017-11-27 | 2018-02-23 | 辽宁海德新化工有限公司 | One kind esterification pre-heater apparatus |
| CN107990774A (en) * | 2017-12-29 | 2018-05-04 | 大连福佳·大化石油化工有限公司 | Extracting charging heat-exchange system |
| CN112083743A (en) * | 2020-09-07 | 2020-12-15 | 赛得利(江苏)纤维有限公司 | A etiolation temperature regulating system for viscose fiber production |
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Application publication date: 20170915 |
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