CN209302729U - The synthesizer of isocyanate prepolymer - Google Patents
The synthesizer of isocyanate prepolymer Download PDFInfo
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- CN209302729U CN209302729U CN201822019913.4U CN201822019913U CN209302729U CN 209302729 U CN209302729 U CN 209302729U CN 201822019913 U CN201822019913 U CN 201822019913U CN 209302729 U CN209302729 U CN 209302729U
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- oil
- reaction kettle
- petroleum pipeline
- reversal valve
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Abstract
The utility model discloses a kind of synthesizer of isocyanate prepolymer, including reaction kettle and oil-temperature control device, wherein the reaction kettle has chuck layer, and chuck layer is equipped with the first oil transportation mouth and the second oil transportation mouth；The oil-temperature control device includes: the hot oil case heated to conduction oil, carries out cooling cold oil case, reversal valve, oil transfer pump and petroleum pipeline to conduction oil.The synthesizer of the utility model can be realized the fast cooling to reaction kettle, and safety is higher, temperature control it is more accurate, also can supernumerary segment energy, be able to satisfy isocyanate prepolymer synthesis process requirements.
Description
Technical field
The utility model relates to a kind of synthetic reaction devices of chemical field, more particularly to a kind of isocyanate prepolymer
Synthesizer, such as the synthesis of the prepolymer for 1,5- naphthalene-diisocyanate (NDI) and polyalcohol.
Background technique
Isocyanate prepolymer made from isocyanates and polyalcohol is a kind of raw material of synthesis of polyurethane elastomer.Its is pre-
The characteristics of poly- reaction is: initial reaction is slower, needs to heat, but late phase reaction quickly, heat release it is violent, need to cool down in time.
By taking 1,5- naphthalene-diisocyanate (NDI) as an example, it is with high-melting-point (127 DEG C) and rigid aromatic series naphthalene nucleus knot
The aromatic diisocyanate of structure is suitable for manufacturing the polyurethane elastomer of high resiliency and high rigidity.Due to its fusing point height, manufacture
The method of polyurethane elastomer is more special.Its prepolymer is unable to storage-stable.Synthetic method is that NDI is added 120-130 DEG C
Polyalcohol in be vigorously stirred carry out prepolymerization reaction, although NDI and polyol reaction are exothermic reactions, initial reaction is slower,
And NDI needs a large amount of melting heat, it is therefore desirable to heat to reaction kettle, provide certain starting energy to system.In NDI
It completely after melting, reacts a large amount of and carries out, reaction is fierce, and heat release aggravation, more than ten minutes can complete prepolymerization reaction, need to ask at this time
Equipment removes a large amount of reaction heat in time, it is desirable that prepolymer is down to using temperature within more than ten minutes, in case generation is unnecessary
Side reaction.It is therefore desirable to synthesizer good heating effect and can have very efficient cooling system, and
Temperature can be accurately controlled.Further, since the viscosity of NDI prepolymer is big, when vigorous reaction, produces rapidly a large amount of products, easily exists
Lamination is formed on reaction kettle inner wall, causes heat-transfer effect bad.
There are many defects, most of synthesizers cannot have both heating function and refrigerating function for existing synthesizer,
It is also inaccurate to the control of temperature, it not can solve and form the problem of lamination causes heat-transfer effect to decline on reaction kettle inner wall.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of synthesizer of isocyanate prepolymer, tools
There are efficient heating function and refrigerating function, temperature control is more accurate.
In order to solve the above technical problems, the utility model provides a kind of synthesizer of isocyanate prepolymer, comprising: anti-
Answer kettle and oil-temperature control device；
The reaction kettle has chuck layer；The chuck layer be equipped with the first oil transportation mouth and the second oil transportation mouth, for conduction oil into
Enter/chuck layer is discharged；
The oil-temperature control device includes: the hot oil case heated to conduction oil, carries out cooling cold oil to conduction oil
Case, reversal valve, oil transfer pump and petroleum pipeline；
The hot oil case is equipped with third oil transportation mouth and the 4th oil transportation mouth, for conduction oil entrance/discharge hot oil case；The cold oil
Case is equipped with the 5th oil transportation mouth and the 6th oil transportation mouth, for conduction oil entrance/discharge cold oil case；The petroleum pipeline includes the first oil transportation
Pipe, the second petroleum pipeline, third petroleum pipeline, the 4th petroleum pipeline, the 5th petroleum pipeline and the 6th petroleum pipeline；The reversal valve includes first
Reversal valve and the second reversal valve；The third oil transportation mouth connects first reversal valve by third petroleum pipeline, and the described 5th is defeated
Hydraulic fluid port connects first reversal valve by the 5th petroleum pipeline, and first reversal valve passes through the first petroleum pipeline connection described first
Oil transportation mouth is also equipped with oil transfer pump on first petroleum pipeline；The 4th oil transportation mouth connects described the by the 4th petroleum pipeline
Two reversal valves, the 6th oil transportation mouth connect second reversal valve by the 6th petroleum pipeline, and second reversal valve passes through the
Two petroleum pipelines connect the second oil transportation mouth.
Specifically, the oil-temperature control device includes temperature control component, the conduction oil in the temperature control component detection chuck layer
Temperature and reaction kettle in real reaction temperature, and hot oil case and/or cold oil case are controlled according to set target temperature
Operation, to adjust the temperature of the conduction oil in chuck layer, so that real reaction temperature be made to reach target temperature.
Specifically, the hot oil case is equipped with heating rod, for heating to the conduction oil in hot oil case.
Specifically, the cold oil case is equipped with cooling pipe dish, for cooling down to the conduction oil in cold oil case.It is described cold
But pipe dish connects cooling-water machine, there is the coolant liquid generated by cooling-water machine in the cooling pipe dish.The cooling-water machine is preferably low temperature cold
Water dispenser.
It is connected specifically, the hot oil case also passes through liquid level equilibrium pipe with cold oil case, for adjusting hot oil case and cold oil case
Conduction oil amount.
Specifically, first reversal valve and/or the second reversal valve be by threeway L-type pneumatic ball valve, compressed air and
Two-bit triplet solenoid valve is constituted.
Specifically, the reaction kettle has agitating paddle, the blade front end of the agitating paddle is provided with scraper plate, the scraper plate
Outer ledge and reaction kettle inner wall are parallel and close to reaction kettle inner wall.When stirring paddle stirring, the outer ledge of scraper plate can subtract
Lamination on few reaction kettle inner wall, improves heat-transfer effect.Preferably, the height of the scraper plate is not less than reaction kettle inside wall height
1/2；It is furthermore preferred that the height of scraper plate is smaller not less than the height of 2/3 or 3/4 or 4/5 or scraper plate of reaction kettle inside wall height
In reaction kettle inside wall height.
Specifically, the material of the scraper plate is polytetrafluoroethylene (PTFE).
Specifically, the reaction kettle also has feed opening, stirring motor, discharge port, the first thermometer and pressure gauge.
The oil-temperature control device of the synthesizer of the isocyanate prepolymer of the utility model includes hot oil case and cold oil case,
The chuck layer for connecting reaction kettle with petroleum pipeline by reversal valve, is reacted to realize in reaction kettle by the way that conduction oil is heated or cooled
The raising or rapid cooling of temperature.Wherein, hot oil case and cold oil case are individually to set up, when a large amount of carry out of reaction needs fast prompt drop
Wen Shi can directly initiate the conduction oil of the lower temperature in cold oil case to replace the conduction oil of higher temperature in chuck layer, rapidly
Reaction kettle cooling is realized, without will slowly realize reaction kettle cooling again after the conduction oil of higher temperature gradually cooling.
The utility model is heated and is cooled down using thermally conductive oil systems.Existing apparatus mostly uses vapor to heat greatly,
Vapor heating method due to running under high pressure, and there are operating safety risks；And vapor heating method is difficult to realize not
The accurate control of same temperature, especially close to or more than 100 DEG C；And the energy loss of vapor heating method is much bigger.
The safety of the utility model is higher, and temperature control is more accurate, also can supernumerary segment energy.
Can being provided in the blade front end of agitating paddle for the synthesizer of the isocyanate prepolymer of the utility model is scraped
Plate, and the outer ledge of scraper plate is parallel with reaction kettle inner wall and close to reaction kettle inner wall.Scraper plate can reduce material in reaction kettle
Lamination on wall improves heat transfer efficiency, to improve the quality of isocyanate prepolymer.
The utility model is not only simple in structure, equipment investment is small, it is often more important that and quickly and accurately it can heat up and cool down,
Meet the special process demand of isocyanate prepolymer synthesis.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the synthesizer of the isocyanate prepolymer of the utility model.
Fig. 2 is the specific connection schematic diagram of petroleum pipeline in Fig. 1.
Sign flag illustrates in attached drawing:
1, feed opening；
2, drain hole；
3, stirring motor；
41, the first thermometer；
42, second temperature meter
43, third thermometer
5, pressure gauge；
6, agitating paddle；
7, scraper plate；
8, chuck layer；
81, the first oil transportation mouth；
82, the second oil transportation mouth；
9, oil transfer pump；
10, heating rod；
11, hot oil case；
111, third oil transportation mouth；
112, the 4th oil transportation mouth；
12, liquid level equilibrium pipe；
13, reversal valve；
131, the first reversal valve；
132, the second reversal valve；
14, cold oil case；
141, the 5th oil transportation mouth；
142, the 6th oil transportation mouth；
15, cooling coil；
16, petroleum pipeline；
161, the first petroleum pipeline；
162, the second petroleum pipeline；
163, third petroleum pipeline；
164, the 4th petroleum pipeline；
165, the 5th petroleum pipeline；
166, the 6th petroleum pipeline.
Specific embodiment
Clear, complete description will be carried out to technical solution of the present invention below, it is clear that described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
With reference to the accompanying drawings and examples, the utility model is further described.
As shown in Figure 1, a kind of synthesizer of isocyanate prepolymer, including reaction kettle and oil-temperature control device.Wherein,
Reaction kettle (as shown on the right side of Fig. 1), which has, covers the chuck layer 8 on reaction kettle ontology, the chuck layer 8 have for conduction oil entrance/
The the first oil transportation mouth 81 and the second oil transportation mouth 82 of the chuck layer 8 is discharged.Oil-temperature control device (as shown in fig. 1 on the left-hand side) includes: pair
Hot oil case 11 that conduction oil is heated carries out cooling cold oil case 14, reversal valve 13, oil transfer pump 9 and petroleum pipeline to conduction oil
16。
The detailed connection type of the pipeline road of the oil-temperature control device is as shown in Figure 2.In Fig. 2, hot oil case 11 has the
Three oil transportation mouths 111 and the 4th oil transportation mouth 112, conduction oil entered by the third oil transportation mouth 111 and the 4th oil transportation mouth 112 and/or
Hot oil case 11 is discharged.Cold oil case 14 is equipped with the 5th oil transportation mouth 141 and the 6th oil transportation mouth 142, and conduction oil passes through the 5th oil transportation mouth
141 and the 6th oil transportation mouth 142 enter and/or discharge cold oil case 14.Reversal valve 13 includes the first reversal valve 131 and the second reversal valve
132 two.Petroleum pipeline 16 include the first petroleum pipeline 161, the second petroleum pipeline 162, third petroleum pipeline 163, the 4th petroleum pipeline 164,
166 6 sections of 5th petroleum pipeline 165 and the 6th petroleum pipeline；Wherein, the first oil transportation mouth of the first petroleum pipeline 161 connection 81 and the first commutation
Valve 131 is equipped with oil transfer pump 9 on first petroleum pipeline 161；Second petroleum pipeline 162 connects the second oil transportation mouth 82 and the second reversal valve
132；Third petroleum pipeline 163 connects third oil transportation mouth 111 and the first reversal valve 131；4th petroleum pipeline 164 connects the 4th oil transportation mouth
112 and second reversal valve 132；5th petroleum pipeline 165 connects the 5th oil transportation mouth 141 and the first reversal valve 131；6th petroleum pipeline
166 the 6th oil transportation mouths 142 of connection and the second reversal valve 132.It is cut by the pipeline of the first reversal valve 131 and the second reversal valve 132
It changes, realizes the circulation, cutting and commutation of conduction oil, keep the conduction oil of higher temperature and cold oil case 14 in hot oil case 11 interior compared with low temperature
The conduction oil of degree respectively enters chuck layer 8, is heated or is cooled down to reaction kettle.
In a kind of specific embodiment, which includes temperature control component, and temperature control component is responsible for detection folder
Real reaction temperature in the temperature and reaction kettle of conduction oil in jacket layer 8, and heat is controlled according to set target temperature
The operation of fuel tank 11/ or cold oil case 14, to adjust the temperature of the conduction oil in chuck layer 8, so that real reaction temperature be made to reach
Target temperature.In accurate temperature controlling, the temperature of the conduction oil in chuck layer 8 includes the temperature of the conduction oil exported to chuck layer
It, can be respectively in the first oil transportation mouth 81 of chuck layer 8 and the second oil transportation mouth 82 with the temperature of the conduction oil to flow back out of chuck layer
Detection is exported to the temperature of the conduction oil in chuck layer and the temperature of the conduction oil to flow back out of chuck layer 8.The temperature control component is also
It may include thermally conductive in cold oil/14 by detecting in hot oil case 11 based on the second temperature of thermally conductive oil temperature 42 and for detecting
The third thermometer 43 of oil temperature.
In a kind of specific embodiment, which is equipped with heating rod 10, for leading in hot oil case 11
Hot oil is heated.The cold oil case 14 is equipped with cooling pipe dish 15, for cooling down to the conduction oil in cold oil case 14.This is cold
But pipe dish 15 connects a cooling-water machine, has the coolant liquid generated by cooling-water machine in cooling pipe dish 15.Preferably, which is low temperature
Cooling-water machine.
In a kind of specific embodiment, the hot oil case 11 and cold oil case 14 are also connected by liquid level equilibrium pipe 12, are used
In the amount for adjusting the conduction oil in hot oil case 11 and cold oil case 14.
In a kind of specific embodiment, the reversal valve 13 (the first reversal valve 131 and/or the second reversal valve
It 132) is made of threeway L-type pneumatic ball valve, compressed air and two-bit triplet solenoid valve.
In a kind of specific embodiment, reaction kettle is equipped with agitating paddle 6, and the blade front end of the agitating paddle 6 is provided with
Scraper plate 7, the outer ledge and reaction kettle inner wall of the scraper plate 7 are parallel and close to reaction kettle inner wall.In the present embodiment, scraper plate 7 is
It is vertically arranged.Scraper plate 7 can be fixed on agitating paddle 6 by fastening bolt.When 6 Stirring of agitating paddle, the outside of scraper plate 7
Edge can reduce the lamination on reaction kettle inner wall, improve heat-transfer effect.In Fig. 1, the height of the scraper plate 7 is slightly less than reaction kettle
Inside wall height.In other implementations, according to the amount of reaction mass, it can choose height not less than reaction kettle inside wall height
1/2 scraper plate, or select the scraper plate of other specifications, for example height is not less than the 2/3 or 3/4 of reaction kettle inside wall height, or
4/5 scraper plate 7.
In a kind of specific embodiment, the material of the scraper plate 7 is polytetrafluoroethylene (PTFE).
In a kind of specific embodiment, the reaction kettle also has feed opening 1, stirring motor 3, discharge port 2, first
Thermometer 41 and pressure gauge 5.Wherein, feed opening 1 is generally positioned at reaction kettle top for adding materials into reaction kettle；Out
Material mouth 2 is used to for the material in reaction kettle being discharged, and is generally positioned at reaction kettle lower part；The stirring rod of stirring motor 3 and agitating paddle 6
Connection provides power for agitating paddle 6；First thermometer 41 is used to detect the reaction temperature inside reaction kettle；Pressure gauge 5 is for examining
Survey the pressure inside reaction kettle.
A kind of specific operation process using the synthesizer of the utility model is as follows:
Polyester polyol is added by feed opening 1, opens stirring motor 3, sets target temperature in reaction kettle as 127
DEG C, oil-temperature control device starts 10 heating work of heating rod in hot oil case 11, makes two reversal valves 13 (including the first reversal valve
131 and second reversal valve 132) go to hot oil case 11 simultaneously, oil transfer pump 9 is opened simultaneously, so that hot oil is by the entrance of petroleum pipeline 16
Heating mantle 8 heats chuck layer 8, after polyester polyol reaches set temperature, NDI can be added and reacted, reaction
It can generally terminate after more than ten minutes, temperature can steeply rise at this time, need to switch immediately (including the first reversal valve of reversal valve 13
131 and second reversal valve 132) with up to cold oil case 14, the conduction oil for conveying lower temperature cools down chuck layer 8, with
Cold oil is constantly recycled, and temperature can also gradually rise, and is had in the cooling pipe dish 15 in cold oil case 14 by cooling-water machine generation
Cold liquid reduces the temperature of conduction oil in cold oil case 14, the material temperature of the general cooling prepolymer that can make reaction kettle for ten minutes or so
Reach using temperature, be then turned off oil transfer pump 9, and open 2 blowing of baiting valve, after blowing, is carried out according to aforesaid operations
The synthesis of next kettle prepolymer.
In reaction is quickly and accurately to heat up and cool down, and lower temperature leads in especially timely starting cold oil case
Hot oil carries out fast cooling, meets the special process demand of NDI pre-polymerization synthesis.
In conclusion the various embodiments described above are only presently preferred embodiments of the present invention, it is not of the invention to limit
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be all included in
In protection scope of the present invention.
Claims (10)
1. a kind of synthesizer of isocyanate prepolymer, comprising: reaction kettle and oil-temperature control device, which is characterized in that
The reaction kettle has chuck layer；The chuck layer is equipped with the first oil transportation mouth and the second oil transportation mouth；
The oil-temperature control device includes: the hot oil case heated to conduction oil, cooling cold oil case is carried out to conduction oil, is changed
To valve, oil transfer pump and petroleum pipeline；The hot oil case is equipped with third oil transportation mouth and the 4th oil transportation mouth；It is defeated that the cold oil case is equipped with the 5th
Hydraulic fluid port and the 6th oil transportation mouth；The petroleum pipeline includes the first petroleum pipeline, the second petroleum pipeline, third petroleum pipeline, the 4th petroleum pipeline, the
Five petroleum pipelines and the 6th petroleum pipeline；The reversal valve includes the first reversal valve and the second reversal valve；
The third oil transportation mouth connects first reversal valve by third petroleum pipeline, and the 5th oil transportation mouth passes through the 5th oil transportation
Pipe connects first reversal valve, and first reversal valve connects the first oil transportation mouth by the first petroleum pipeline, and described first
Oil transfer pump is also equipped on petroleum pipeline；The 4th oil transportation mouth connects second reversal valve by the 4th petroleum pipeline, and described the
Six oil transportation mouths connect second reversal valve by the 6th petroleum pipeline, and second reversal valve passes through described in the connection of the second petroleum pipeline
Second oil transportation mouth.
2. synthesizer as described in claim 1, which is characterized in that the oil-temperature control device further includes temperature control component, institute
The real reaction temperature in the temperature and reaction kettle of the conduction oil in temperature control component detection chuck layer is stated, and according to set mesh
Temperature is marked to control the operation of hot oil case and/or cold oil case, to adjust the temperature of the conduction oil in chuck layer, to make practical anti-
Temperature is answered to reach target temperature.
3. synthesizer as described in claim 1, which is characterized in that the hot oil case is equipped with heating rod.
4. synthesizer as described in claim 1, which is characterized in that the cold oil case is equipped with cooling pipe dish, the cooling
Pipe dish connects cooling-water machine, there is the coolant liquid generated by cooling-water machine in the cooling pipe dish.
5. synthesizer as described in claim 1, which is characterized in that the hot oil case and cold oil case also pass through liquid level equilibrium pipe
Connection.
6. synthesizer as described in claim 1, which is characterized in that first reversal valve and/or the second reversal valve be
It is made of threeway L-type pneumatic ball valve, compressed air and two-bit triplet solenoid valve.
7. synthesizer as described in claim 1, which is characterized in that the reaction kettle has agitating paddle, the agitating paddle
Blade front end is provided with scraper plate, and the outer ledge and reaction kettle inner wall of the scraper plate are parallel and close to reaction kettle inner wall.
8. synthesizer as claimed in claim 7, which is characterized in that it is high that the height of the scraper plate is slightly less than reaction kettle inner wall
Degree.
9. synthesizer as claimed in claim 7, which is characterized in that the material of the scraper plate is polytetrafluoroethylene (PTFE).
10. synthesizer as described in claim 1, which is characterized in that the reaction kettle also has for adding into reaction kettle
Stirring motor, the discharge port for the material in reaction kettle to be discharged, use for adding the feed opening of material, power being provided for agitating paddle
The first thermometer and pressure gauge for detecting the pressure inside reaction kettle of reaction temperature inside detection reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822019913.4U CN209302729U (en) | 2018-12-04 | 2018-12-04 | The synthesizer of isocyanate prepolymer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822019913.4U CN209302729U (en) | 2018-12-04 | 2018-12-04 | The synthesizer of isocyanate prepolymer |
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| Publication Number | Publication Date |
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| CN209302729U true CN209302729U (en) | 2019-08-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115069202A (en) * | 2022-08-03 | 2022-09-20 | 东莞海丽化学材料有限公司 | Synthesis equipment and method of bio-based thermoplastic polyurethane elastomer |
-
2018
- 2018-12-04 CN CN201822019913.4U patent/CN209302729U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115069202A (en) * | 2022-08-03 | 2022-09-20 | 东莞海丽化学材料有限公司 | Synthesis equipment and method of bio-based thermoplastic polyurethane elastomer |
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