CN106893077A - A kind of aqueous polyurethane energy-conservation precipitation production equipment and process - Google Patents
A kind of aqueous polyurethane energy-conservation precipitation production equipment and process Download PDFInfo
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- CN106893077A CN106893077A CN201710240275.6A CN201710240275A CN106893077A CN 106893077 A CN106893077 A CN 106893077A CN 201710240275 A CN201710240275 A CN 201710240275A CN 106893077 A CN106893077 A CN 106893077A
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- inner tube
- outer tube
- solvent
- recirculated water
- conservation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/82—Post-polymerisation treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention provides a kind of aqueous polyurethane energy-conservation precipitation production equipment and process, and the equipment mainly includes：Recirculated water cooling condenser, recirculated water cooling condenser includes the first outer tube and the first inner tube being arranged in outer tube, and the first outlet pipe that oriented first outer tube extends and passes the first outer tube is set in the first inner tube；Refrigerant condenser, including the second outer tube and the second inner tube being arranged in the second outer tube, set the second outlet pipe that oriented second outer tube extends and passes the second outer tube in the second inner tube.The present invention with the addition of recirculated water cooling condenser in solvent condensation process, recirculated water cooling condenser can share part cold, substantial amounts of acetone can be condensed in this stage, to mitigate the pressure of refrigerant condenser below, recirculated water can be lowered the temperature by cooling tower, cooling tower only needs to blower fan, it is not necessary to which compressor cooling, cost is relatively low.
Description
Technical field
The present invention relates to precipitation technical field, more particularly to a kind of aqueous polyurethane energy-conservation precipitation production equipment and process.
Background technology
Aqueous polyurethane desolventizing production process used by current factory is to contain solvent acetone using in heating precipitation kettle
Aqueous polyurethane, is then heated the solvent acetone of vaporization using vavuum pump vacuum drawn, is heated the solvent acetone warp of vaporization
When crossing condenser, liquid is condensed into, then in the receiving tank under flow ipe, is passed through by the refrigerant of condenser now
Refrigeration unit refrigeration reduces refrigerant temperature to reach, and typically requires the temperature of refrigerant at -10 DEG C, and condensation effect is relatively good, takes off
The molten time is also shorter, the great cold of needs but the solvent acetone of a large amount of vaporizations is condensed, and it is very big that this is accomplished by outfit
Refrigerant pond or significant power refrigeration unit, the refrigeration unit of significant power is not only expensive, and power consumption is also huge
Greatly；It is typically all ethylene glycol to be equipped with very big refrigerant pond one side refrigerant, and volume is bigger, more dangerous, on the other hand, it is necessary to
Freezed for a long time in advance, power consumption is also very big, and production cost is very high.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of aqueous polyurethane energy-conservation precipitation
Production equipment and process, the equipment can accomplish to meet the mesh of production precipitation using smaller refrigeration unit and smaller refrigerant pond
, equipment cost is not only reduced, also reduce use cost.
In order to achieve the above objects and other related objects, the present invention provides a kind of aqueous polyurethane energy-conservation precipitation production and sets
It is standby, including：Precipitation kettle, its top is provided with solvent outlet；Connecting line, its one end is connecting line entrance point, and the other end is
The connecting line port of export；The connecting line entrance point is connected with the solvent outlet of the precipitation kettle；Recirculated water cooling condenser, it is described
Recirculated water cooling condenser includes the first outer tube and the first inner tube being arranged in the outer tube, and described first inner tube one end is in first
Pipe entrance point, the other end is the first inner tube outlet end, oriented first outer tube is set in first inner tube and is extended and is passed
The first outlet pipe of first outer tube；The first inner tube entrance point is connected with the connecting line port of export；Refrigerant is condensed
Device, including the second outer tube and the second inner tube being arranged in second outer tube, described second inner tube one end is entered for the second inner tube
Mouth end, the other end is the second inner tube outlet end, oriented second outer tube is set in second inner tube and is extended and is passed described
The second outlet pipe of the second outer tube；The second inner tube entrance point is connected with the first inner tube outlet end；Vacuum connects skirt, its
One end is connected with the second inner tube outlet end, and its side is provided with suction interface；Vavuum pump, it passes through pipeline with the pumping
Interface is connected.
In one embodiment of the present invention, the aqueous polyurethane energy-conservation precipitation production equipment also connects including the first solvent
Closed cans, the first solvent receiving tank is connected with the first outlet pipe.
In one embodiment of the present invention, the aqueous polyurethane energy-conservation precipitation production equipment also connects including the second solvent
Closed cans, the second solvent receiving tank is connected with the second outlet pipe.
In one embodiment of the present invention, one end of first outer tube is provided with into recirculated water adapter, and the other end sets
It is equipped with out recirculated water adapter；One end of second outer tube is provided with into refrigerant adapter, and the other end is provided with out refrigerant adapter.
In one embodiment of the present invention, recirculated water is housed between first outer tube and first inner tube.
In one embodiment of the present invention, the flow direction of the recirculated water is opposite with the flow direction of the first inner tube internal solvent.
In one embodiment of the present invention, built with refrigerant between second outer tube and second inner tube.
In one embodiment of the present invention, the flow direction of the refrigerant is opposite with the flow direction of the second inner tube internal solvent.
In one embodiment of the present invention, first inner tube and the angle of the connecting line are 0.5-5 °.
Invention additionally discloses a kind of aqueous polyurethane energy-conservation desolventizing production process, comprise the following steps：
1) solvent-laden waterborne polyurethane resin in heating precipitation kettle；
2) to being passed through recirculated water in recirculated water cooling condenser, while to being passed through refrigerant in refrigerant condensation cycle device；
3) treat that temperature reaches solvent boiling point, open vavuum pump, the solvent that vavuum pump will be vaporized passes through one or more phases successively
Recirculated water cooling condenser even, a part of gasifying solvent is got off by circulating water condensing, then flows into the first solvent receiving tank, then remains
Lower gasifying solvent is condensed into liquid by one or more refrigerant condensers being sequentially connected, in the second solvent receiving tank of inflow.
As described above, the present invention provides a kind of aqueous polyurethane energy-conservation precipitation production equipment and process, with following beneficial
Effect：
The present invention with the addition of recirculated water cooling condenser in solvent condensation process so that recirculated water cooling condenser shares part cold,
In this stage substantial amounts of acetone can be condensed to mitigate the pressure of refrigerant condenser below, recirculated water can by cooling tower come
Cooling, cooling tower only needs to a blower fan, it is not necessary to which compressor cooling, cost is relatively low.The present invention uses smaller refrigeration machine
Group and smaller refrigerant pond produce the purpose of precipitation to meet, and not only reduce equipment cost, also reduce use cost.
Brief description of the drawings
Fig. 1 is shown as aqueous polyurethane energy-conservation precipitation production equipment structural representation of the invention.
Component label instructions
1 precipitation kettle
2 connecting lines
3 recirculated water cooling condensers
31 first inner tubes
311 first inner tube entrance points
312 first inner tube outlet ends
313 first outlet pipes
32 first outer tubes
321 enter recirculated water adapter
322 go out recirculated water adapter
4 refrigerant condensers
41 second inner tubes
411 second inner tube entrance points
412 second inner tube outlet ends
413 second outlet pipes
42 second outer tubes
421 enter refrigerant adapter
422 go out refrigerant adapter
5 first solvent receiving tanks
6 second solvent receiving tanks
Specific embodiment
Embodiments of the present invention are illustrated below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages of the invention and effect easily.The present invention can also be by specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Fig. 1 is referred to, it is necessary to illustrate, the diagram provided in the present embodiment only illustrates of the invention in a schematic way
Basic conception, component count, shape when only display is with relevant component in the present invention rather than according to actual implementation in schema then
And size is drawn, it is actual when the implementing kenel of each component, quantity and ratio can be a kind of random change, and its assembly layout
Kenel is likely to increasingly complex.
On the one hand, the present invention provides a kind of aqueous polyurethane energy-conservation precipitation production equipment, and the equipment is used for de- using heating
Molten kettle aqueous polyurethane distilling off solvent acetone, pass sequentially through recirculated water cooling condenser, refrigerant condenser solvent acetone is carried out it is cold
But, production cost is reduced.Fig. 1 is shown as aqueous polyurethane energy-conservation precipitation production equipment structural representation, as illustrated, the production
Equipment includes：Precipitation kettle 1, connecting line 2, recirculated water cooling condenser 3, refrigerant condenser 4, the first solvent receiving tank 5, the second solvent
Receiving tank 6 and vavuum pump.
The inside of precipitation kettle 3 or outside are provided with heater, for heating aqueous polyurethane solvent distillation acetone, solvent third
Ketone is exported from the solvent outlet on the top of precipitation kettle.
The one end of connecting line 2 is connecting line entrance point, and the other end is the connecting line port of export；Connecting line entrance point with
The solvent outlet of precipitation kettle 1 is connected.The connecting line port of export is connected with one end of recirculated water cooling condenser 3.
The quantity of recirculated water cooling condenser 3 could be arranged to one or more, need to be entered according to the weight of acetone in aqueous polyurethane
Row selection.As an example, the quantity of recirculated water cooling condenser 3 is 1.Recirculated water cooling condenser 3 includes the first outer tube 32 and is arranged at
The first inner tube 31 in outer tube 32, one end of the first inner tube 31 is the first inner tube entrance point 311, and the other end is the first inner tube outlet
End 312, the first inner tube entrance point 311 is connected with the connecting line port of export.
The first outlet pipe 313 that oriented first outer tube 32 extends and passes the first outer tube 32 is set in first inner tube 31, the
One outlet 313 is located at the first inner tube 31 near the side at the first inner tube outlet end 312, the solvent of first outlet pipe 313 and first
Receiving tank 5 is connected.
First inner tube 31 is linear pattern, spherical or shaped form, as an example, the first inner tube 31 is linear pattern.
Cavity between first outer tube 32 and the first inner tube 31 is equipped with recirculated water.One end of first outer tube 32 is provided with into following
Ring water adapter 321, the other end is provided with out recirculated water adapter 322；Recirculated water enters the first outer tube 32 from recirculated water adapter 321 is entered
It is interior, then from going out at recirculated water adapter to flow out, subsequently into cooling tower, recirculated water is lowered the temperature by cooling tower, cooling tower
A blower fan is only needed, is freezed without compressor, cost is relatively low.
In the present embodiment, the first outer tube 32 and the first inner tube 31 are formed in one structure, and structure is more stable.
In the present embodiment, the flow direction of recirculated water and the flow direction of the internal solvent of the first inner tube 31 are conversely, be conducive to acetone more
Good cooling.
First inner tube is 0.5-5 ° with the angle of connecting line, as an example, the first inner tube is with the angle of connecting line
3°。
The quantity of refrigerant condenser 4 could be arranged to one or more, need to be carried out according to the weight of acetone in aqueous polyurethane
Selection.As an example, the quantity of refrigerant condenser 4 is 1.Refrigerant condenser 4 includes the second outer tube 42 and is arranged at outside second
The second inner tube 41 in pipe 42, one end of the second inner tube 41 is the second inner tube entrance point 411, and the other end is the second inner tube outlet end
412, the second inner tube entrance point 411 is connected with the first inner tube outlet end 312, and the second inner tube outlet end 412 connects skirt by vacuum
It is connected with receiving tank, vacuum connects skirt side and is provided with the suction interface being connected with vavuum pump.
When there is multiple refrigerant condensers 4 to be sequentially connected, except last refrigerant condenser 4, other refrigerant condensers 4
The second inner tube 41 on the second outlet pipe 413 that oriented second outer tube 42 extends and passes the second outer tube 42, second outlet are set
Pipe 413 is located at the side near the second inner tube outlet end 412 in the second inner tube 41, and the solvent of second outlet pipe 413 and second is received
Tank 6 is connected.
Second inner tube 41 is linear pattern, spherical or shaped form, as an example, the second inner tube 41 is linear pattern.
Cavity between second outer tube 42 and the second inner tube 41 is equipped with refrigerant.One end of second outer tube 42 is provided with into refrigerant
Adapter 421, the other end is provided with out refrigerant adapter 422.
In the present embodiment, the second outer tube 42 and the second inner tube 41 are formed in one structure, and structure is more stable.
In the present embodiment, the flow direction of refrigerant and the flow direction of the internal solvent of the second inner tube 41 are conversely, be conducive to more preferable to acetone
Cooling.
Vavuum pump is connected by pipeline with the second inner tube outlet end 412.Vavuum pump is evacuated to whole cooling device, makes
Solvent acetone is obtained to be flowed according to presetting direction.
The length ratio of the first outer tube 32 and the second outer tube 42 is (1-5)：1, as an example, outside the first outer tube 32 and second
The length ratio of pipe 42 is 1:1.
On the other hand, the present invention also provides a kind of aqueous polyurethane energy-conservation desolventizing production process, comprises the following steps：
1) waterborne polyurethane resin containing solvent in precipitation kettle is heated；
2) to being passed through recirculated water in recirculated water cooling condenser, while to being passed through refrigerant in refrigerant condensation cycle device；
3) treat that temperature reaches solvent boiling point, open vavuum pump, the solvent that vavuum pump will be vaporized passes through one or more successively
Connected recirculated water cooling condenser, a part of gasifying solvent is got off by circulating water condensing, in then flowing into the first solvent receiving tank, so
It is left gasifying solvent afterwards and is condensed into liquid by one or more refrigerant condensers being sequentially connected, flows into the second solvent and receive
In tank.
In sum, the present invention with the addition of recirculated water cooling condenser in solvent condensation process so that recirculated water cooling condenser is shared
Part cold, can condense substantial amounts of acetone to mitigate the pressure of refrigerant below in this stage, and recirculated water can be by cooling tower
To lower the temperature, cooling tower only needs to a blower fan, it is not necessary to which compressor cooling, cost is relatively low.The present invention uses smaller refrigeration
Unit and smaller refrigerant pond produce the purpose of precipitation to meet, and not only reduce equipment cost, also reduce use cost.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
Into all equivalent modifications or change, should be covered by claim of the invention.
Claims (10)
1. a kind of aqueous polyurethane energy-conservation precipitation production equipment, it is characterised in that including：
Precipitation kettle, its top is provided with solvent outlet；
Connecting line, its one end is connecting line entrance point, and the other end is the connecting line port of export；The connecting line entrance point
Solvent outlet with the precipitation kettle is connected；
Recirculated water cooling condenser, the recirculated water cooling condenser includes the first outer tube and the first inner tube being arranged in the outer tube, institute
First inner tube one end is stated for the first inner tube entrance point, the other end is the first inner tube outlet end, sets oriented in first inner tube
First outer tube extends and passes the first outlet pipe of first outer tube；The first inner tube entrance point and the connecting tube
Way outlet end is connected；
Refrigerant condenser, including the second outer tube and the second inner tube being arranged in second outer tube, described second inner tube one end
It is the second inner tube entrance point, the other end is the second inner tube outlet end, oriented second outer tube is set in second inner tube and is prolonged
Stretch and pass the second outlet pipe of second outer tube；The second inner tube entrance point is connected with the first inner tube outlet end；
Vacuum connects skirt, and its one end is connected with the second inner tube outlet end, and its side is provided with suction interface；
Vavuum pump, it passes through pipeline and is connected with the suction interface.
2. aqueous polyurethane energy-conservation precipitation production equipment according to claim 1, it is characterised in that also including the first solvent
Receiving tank, the first solvent receiving tank is connected with the first outlet pipe.
3. aqueous polyurethane energy-conservation precipitation production equipment according to claim 1 and 2, it is characterised in that also including second
Solvent receiving tank, the second solvent receiving tank is connected with the second outlet pipe.
4. aqueous polyurethane energy-conservation precipitation production equipment according to claim 1, it is characterised in that first outer tube
One end is provided with into recirculated water adapter, and the other end is provided with out recirculated water adapter；One end of second outer tube is provided with into cold
Matchmaker takes over, and the other end is provided with out refrigerant adapter.
5. aqueous polyurethane energy-conservation precipitation production equipment according to claim 1, it is characterised in that first outer tube with
Recirculated water is housed between first inner tube.
6. aqueous polyurethane energy-conservation precipitation production equipment according to claim 5, it is characterised in that the stream of the recirculated water
To opposite with the flow direction of the first inner tube internal solvent.
7. aqueous polyurethane energy-conservation precipitation production equipment according to claim 1, it is characterised in that second outer tube with
Built with refrigerant between second inner tube.
8. aqueous polyurethane energy-conservation precipitation production equipment according to claim 7, it is characterised in that the flow direction of the refrigerant
Flow direction with the second inner tube internal solvent is opposite.
9. aqueous polyurethane energy-conservation precipitation production equipment according to claim 1, it is characterised in that first inner tube with
The angle of the connecting line is 0.5-5 °.
10. a kind of aqueous polyurethane energy-conservation desolventizing production process, it is characterised in that comprise the following steps：
1) solvent-laden waterborne polyurethane resin in heating precipitation kettle；
2) to being passed through recirculated water in recirculated water cooling condenser, while to being passed through refrigerant in refrigerant condensation cycle device；
3) treat that temperature reaches solvent boiling point, open vavuum pump, by one or more be sequentially connected the solvent of vaporization by vavuum pump
Recirculated water cooling condenser, a part of gasifying solvent gets off by circulating water condensing, then flows into the first solvent receiving tank, then remain
Lower gasifying solvent is condensed into liquid by one or more refrigerant condensers being sequentially connected, and flows into the second solvent receiving tank
In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710240275.6A CN106893077A (en) | 2017-04-13 | 2017-04-13 | A kind of aqueous polyurethane energy-conservation precipitation production equipment and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710240275.6A CN106893077A (en) | 2017-04-13 | 2017-04-13 | A kind of aqueous polyurethane energy-conservation precipitation production equipment and process |
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| CN106893077A true CN106893077A (en) | 2017-06-27 |
Family
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|---|---|---|---|
| CN201710240275.6A Pending CN106893077A (en) | 2017-04-13 | 2017-04-13 | A kind of aqueous polyurethane energy-conservation precipitation production equipment and process |
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| CN (1) | CN106893077A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210038205A (en) * | 2019-09-30 | 2021-04-07 | 주식회사 엘지화학 | Devolatilization system, method of devolatilization and preparing method of styrene-nitrile based copolymer using the same |
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| KR20210038205A (en) * | 2019-09-30 | 2021-04-07 | 주식회사 엘지화학 | Devolatilization system, method of devolatilization and preparing method of styrene-nitrile based copolymer using the same |
| KR102601077B1 (en) | 2019-09-30 | 2023-11-10 | 주식회사 엘지화학 | Devolatilization system, method of devolatilization and preparing method of styrene-nitrile based copolymer using the same |
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Application publication date: 20170627 |
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