CN209451849U - A kind of device being used to prepare Polyether hydrophilic polyisocyanates - Google Patents
A kind of device being used to prepare Polyether hydrophilic polyisocyanates Download PDFInfo
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- CN209451849U CN209451849U CN201920729105.9U CN201920729105U CN209451849U CN 209451849 U CN209451849 U CN 209451849U CN 201920729105 U CN201920729105 U CN 201920729105U CN 209451849 U CN209451849 U CN 209451849U
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Abstract
The utility model relates to engineering device technique fields, it is related to a kind of device for being used to prepare Polyether hydrophilic polyisocyanates, includes the second reaction kettle, the mucinous reaction material pot being connected to second the first feed end of reaction kettle and the receptacle being connected to the second reaction kettle discharge end；Wherein, the air inlet of the vacuum pump is connected to the gas outlet of second reaction kettle；The second reaction kettle discharge end is connected to through the filter with the receptacle；First outlet side of the nitrogen gas tank is connected to by pipeline with the upper end air inlet of the mucinous reaction material pot, and the second outlet side of the nitrogen gas tank is connected to by pipeline with the upper end air inlet of the receptacle.The utility model is used cooperatively by vacuum pump, filter and nitrogen gas tank, so that mucinous reaction material pot and receptacle completely cut off air, to overcome the low defect of existing Polyether hydrophilic polyisocyanates combined coefficient, achieve the purpose that improve Polyether hydrophilic polyisocyanates production efficiency.
Description
Technical field
The utility model relates to engineering device technique fields, and it is more to be used to prepare Polyether hydrophilic more specifically to one kind
The device of isocyanates.
Background technique
Polyether hydrophilic polyisocyanates is a kind of benign curing agent, and it is good not only to assign polyisocyantates composition
Emulsibility, and make polyisocyanate curing agent and the various ionic types including anion, cation and nonionic
Water-base resin forms curing system.Influence of the pH value to curing agent emulsion stability can be reduced, certain density acid, alkali,
Fairly good stability of emulsion is still kept under the conditions of salt is existing.This is because the hydrophilic group of amphoteric surfactant both had
Anion part, but have cationic portion, in the solution display etc. electrical properties, and have fabulous stability in hard water and resisting high-concentration
Electrolyte, can be with various types surfactant compatibility, there are also good emulsibility and dispersibility etc., preparation process meeting
There are two processes, and a process is to be placed in part material in reaction kettle to be reacted to obtain out tertiary amine groups polyether monol,
Another process is to pass through sticky amphoteric ion polyether monol after first process reaction terminates to carry out except water process
Mucinous reaction material pot, which flows into reaction kettle, carries out the final Polyether hydrophilic with amphoteric ion group of reaction synthesis
Polyisocyanates finished product.
But in actual operation, since sticky amphoteric ion polyether monol mobility is poor, through mucinous reaction object
The blanking efficiency of amphoteric ion polyether monol is reduced because flow velocity is excessively slow during the material filling of batch can.The applicant is using extruding
Feeding style improves the blanking efficiency of amphoteric ion polyether monol.But this extruding feeding style can make both sexes from
Sub- polyether monol carries air and moisture in air enters in reaction kettle cause Polyether hydrophilic polyisocyanates simultaneously
It fails because of water suction, so that the combined coefficient of Polyether hydrophilic polyisocyanates finished product is low, being unable to meet production is needed
It asks.
Utility model content
In view of this, the present invention provides a kind of device for being used to prepare Polyether hydrophilic polyisocyanates, with
Solve the low defect of existing Polyether hydrophilic polyisocyanates combined coefficient.
To achieve the above object, the utility model provides following technical solution:
A kind of device being used to prepare Polyether hydrophilic polyisocyanates includes the second reaction kettle, reacts with second
The mucinous reaction material pot of the first feed end of kettle connection and the receptacle being connected to the second reaction kettle discharge end；It further include having
Vacuum pump, filter and nitrogen gas tank；Wherein, the air inlet of the vacuum pump is connected to the gas outlet of second reaction kettle；
The second reaction kettle discharge end is connected to through the filter with the receptacle；First outlet side of the nitrogen gas tank passes through pipe
Road is connected to the upper end air inlet of the mucinous reaction material pot, and the second outlet side of the nitrogen gas tank is deposited by pipeline with described
Put the upper end air inlet connection of device.
As a preferred embodiment of the present invention, which further includes having the first reaction kettle and water segregator；Wherein, described
The discharge end of first reaction kettle is connected to the second feed end of second reaction kettle；The air inlet of the water segregator and described the
The gas outlet of one reaction kettle is connected to, and the air inlet of first reaction kettle is connected to the refluxing opening of the water segregator.It is practical at this
In novel, the utility model cooperatively forms water removal protective layer by the first reaction kettle and water segregator, so that in the first reaction kettle
Moisture absorption reflux be able to dry removing, avoid the product in the first reaction kettle and carry moisture and enter in the second reaction kettle
Influence combined coefficient.
As a preferred embodiment of the present invention, which further includes having water absorption layer, and the water absorption layer is fixed at institute
State flowing in channel for filter.In the present invention, the water absorption layer is arranged in the filter interior, and the water suction
The upper surface of layer is contacted with the connection of the feed end of the filter, the feed end of the lower surface of the water absorption layer and the receptacle
Connection contact, so that needing to again pass by after the Polyether hydrophilic polyisocyanic acid ester products of the second reaction kettle enter filter
It is flowed into receptacle after the drying of water absorption layer, the Polyether hydrophilic polyisocyanic acid ester products of the second reaction kettle is avoided to absorb
Juicy further solves the low defect of existing Polyether hydrophilic polyisocyanates combined coefficient, reaches raising polyethers
The purpose of hydrophilically modified polyisocyanates production efficiency.
As a preferred embodiment of the present invention, which further includes having agitating unit, and the agitating unit is set to institute
It states in the second reaction kettle.The agitating unit includes stirring motor and paddle；It is anti-that the stirring motor is fixed on described second
The bottom of kettle is answered, the paddle is fixed in the rotation axis of the stirring motor.The utility model is using agitating unit to the
Raw material in two reaction kettles is stirred, so that the raw material in the second reaction kettle is sufficiently mixed；It is driven and is stirred using stirring motor
Leaf quick rotation accelerates the raw material mixing velocity in the second reaction kettle, while the raw material in the second reaction kettle is mixed more
Uniformly, it avoids the raw material in the second reaction kettle uneven because mixing due to Polyether hydrophilic polyisocyanates Product formation is caused to be imitated
Rate is low, further improves the combined coefficient of Polyether hydrophilic polyisocyanic acid ester products, reaches raising Polyether hydrophilic
The purpose of polyisocyanates production efficiency.
The utility model has the following beneficial effects: the utility model passes through pipeline and the mucinous reaction material using nitrogen gas tank
The upper end air inlet of tank is connected to, so that from the upper end air inlet of mucinous reaction material pot to enter to mucus anti-for the nitrogen in nitrogen gas tank
It answers in material pot, the material accelerated inside mucinous reaction material pot is squeezed while completely cutting off air and is flowed into the second reaction kettle,
The material inside mucinous reaction material pot is effectively prevented to carry air and moisture in air while entering in the second reaction kettle
The defect for causing Polyether hydrophilic polyisocyanates to fail by water suction further improves Polyether hydrophilic polyisocyanic acid
The combined coefficient of ester products；Also, the utility model is connected using nitrogen gas tank by the upper end air inlet of pipeline and the receptacle
It is logical, so that the nitrogen in nitrogen gas tank enters in receptacle from the upper end air inlet of receptacle receptacle inner air is squeezed
It is outer to achieve the purpose that air-isolation and air moisture to be emitted into receptacle；In addition, the utility model extracts the using vacuum pump
Air and moisture in two reaction kettles make the second reaction kettle be in vacuum state, with the moisture in further air-isolation；It is logical
The dry water in products filtered out in the second reaction kettle point of filter is crossed, preventing moisture from entering in receptacle influences that polyethers is hydrophilic to be changed
Property polyisocyanates combined coefficient, thus achieve the purpose that improve Polyether hydrophilic polyisocyanates production efficiency.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
New embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is that one kind disclosed in the utility model specific embodiment 1 is used to prepare Polyether hydrophilic polyisocyanates
Device overall structure figure；
In figure: the first reaction kettle of 1-；2- water segregator；The second reaction kettle of 3-；4- vacuum pump；5- agitating unit；6- filter；
7- water absorption layer；8- receptacle；9- nitrogen gas tank；10- mucinous reaction material pot；11- control valve；51- stirring motor；52- paddle.
Specific embodiment
Following example for being further described the utility model, but embodiment the utility model is not done it is any
The restriction of form, except illustrating, the second reaction kettle 3 that the utility model uses, mucinous reaction material pot 10, receptacle 8, the
One reaction kettle 1, water segregator 2, vacuum pump 4, filter 6 and nitrogen gas tank 9 are second reaction kettle 3 of the art, mucus
Reactant batch can 10, receptacle 8, the first reaction kettle 1, water segregator 2, vacuum pump 4, filter 6 and nitrogen gas tank 9, but not to appoint
What form limits the utility model.
Embodiment 1: as shown in Figure 1, the utility model embodiment, which provides one kind, is used to prepare Polyether hydrophilic polyisocyanate
The device of cyanate, include the second reaction kettle 3, the mucinous reaction material pot 10 being connected to 3 first feed end of the second reaction kettle,
And the receptacle 8 being connected to 3 discharge end of the second reaction kettle；It further include having the first reaction kettle 1, water segregator 2, vacuum pump 4, filtering
Device 6 and nitrogen gas tank 9；Wherein, the discharge end of first reaction kettle 1 is connected to the second feed end of second reaction kettle 3；
The air inlet of the water segregator 2 is connected to the gas outlet of first reaction kettle 1, the air inlet of first reaction kettle 1 and institute
State the refluxing opening connection of water segregator 2；The air inlet of the vacuum pump 4 is connected to the gas outlet of second reaction kettle 3；Described
Two reaction kettles, 3 discharge end is connected to through the filter 6 with the receptacle 8；First outlet side of the nitrogen gas tank 9 passes through pipeline
Be connected to the upper end air inlet of the mucinous reaction material pot 10, the second outlet side of the nitrogen gas tank 9 by pipeline with it is described
The upper end air inlet of receptacle 8 is connected to.In the utility model embodiment, in order to further control the flow velocity of each process,
It is respectively provided on each pipeline and is fixed with control valve 11, which is used to control the on-off of pipeline to reach each process of control
The purpose of flow velocity.
In the utility model embodiment, the water segregator 2 is traditional experiment water segregator 2；The utility model embodiment
In 2 working principle of water segregator are as follows: experiment utilize constant boiling mixture distillating method, using water segregator 2 will reaction generate water layer
Organic layer above is constantly flow back into reaction flask, and the water of generation is removed.Before experiment, after adding water to branch pipe in water segregator 2
Putting has (V-X) ml water in Xml water i.e. water segregator 2.Starting small fire heating, liquid is slightly boiled in holding bottle, start to flow back, control one
Determine experimental temperature, indicates that reaction is basically completed when water segregator 2 is all filled with water, stop heating.It is mainly used for chemistry
The water that separation chemistry reaction generates in experiment, since the water that chemical reaction generates can be to reaction when there is water to be present in reaction system
It affects or carry out reaction can not, need the water of generation that water is taken out of by the solvent refluxing of azeotrope with water
Come, be able to carry out reaction, usually takes away the water that reaction generates with toluene and water azeotropic.
In the utility model embodiment, the utility model embodiment is anti-by pipeline and the mucus using nitrogen gas tank 9
The upper end air inlet of material pot 10 is answered to be connected to, so that upper end air inlet of the nitrogen in nitrogen gas tank 9 from mucinous reaction material pot 10
It enters in mucinous reaction material pot 10, the material stream accelerated inside mucinous reaction material pot 10 is squeezed while completely cutting off air
Enter in the second reaction kettle 3, effectively prevents the material inside mucinous reaction material pot 10 and carry air and moisture in air simultaneously
The defect for causing Polyether hydrophilic polyisocyanates to fail by water suction in the second reaction kettle 3 is entered to, is further improved
The combined coefficient of Polyether hydrophilic polyisocyanic acid ester products；Also, the utility model using nitrogen gas tank 9 by pipeline with it is described
The upper end air inlet of receptacle 8 is connected to, so that the nitrogen in nitrogen gas tank 9 enters to receptacle 8 from the upper end air inlet of receptacle 8
The extruding of 8 inner air of receptacle is inside made to be emitted into receptacle 8 outer to achieve the purpose that air-isolation and air moisture.
In addition, the utility model embodiment is protected by first water removal that cooperatively forms of the first reaction kettle 1 and water segregator 2
Layer, so that the moisture absorption reflux in the first reaction kettle 1 is able to dry removing, the product avoided in the first reaction kettle 1 is carried
Moisture, which enters in the second reaction kettle 3, influences combined coefficient；Second water removal that cooperatively forms using vacuum pump 4 and nitrogen gas tank 9 is prevented
Sheath, the air and moisture extracted in the second reaction kettle 3 make the second reaction kettle 3 be in vacuum state, then recycle nitrogen
Nitrogen is perfused in the second reaction kettle 3 with the moisture in further air-isolation in tank 9；And third is formed using filter 6 and is removed water
Protective layer prevents moisture from entering to shadow in receptacle 8 by the dry water in products filtered out in the second reaction kettle 3 point of filter 6
Ring the combined coefficient of Polyether hydrophilic polyisocyanates；In addition, the utility model is perfused in receptacle 8 using nitrogen gas tank 9
Nitrogen is with the moisture in further air-isolation, to form the 4th water removal protective layer；Therefore, the utility model is anti-by first
It answers being used cooperatively for kettle 1, water segregator 2, vacuum pump 4, filter 6 and nitrogen gas tank 9 to form four layers of water removal protective layer, can effectively keep away
Exempt from Polyether hydrophilic polyisocyanates to absorb water during the preparation process rotten and cause combined coefficient low, effectively overcome existing
The low defect of Polyether hydrophilic polyisocyanates combined coefficient further improves the production of Polyether hydrophilic polyisocyanates
The combined coefficient of object achievees the purpose that improve Polyether hydrophilic polyisocyanates production efficiency.
Embodiment 2: the device further includes having water absorption layer 7, and the water absorption layer 7 is fixed at the flow direction of the filter 6
In channel.In the present invention, material used in the water absorption layer 7 is water adsorption glass cotton or active carbon desiccant.The water suction
Layer 7 is arranged inside the filter 6, and the upper surface of the water absorption layer 7 is contacted with the connection of the feed end of the filter 6,
The lower surface of the water absorption layer 7 is contacted with the connection of the feed end of the receptacle 8, is changed so that the polyethers of the second reaction kettle 3 is hydrophilic
After property polyisocyanic acid ester products enter filter 6, flows into receptacle 8, avoid after needing to again pass by the drying of water absorption layer 7
The Polyether hydrophilic polyisocyanic acid ester products of second reaction kettle 3 absorb excess moisture, and it is hydrophilic to further solve existing polyethers
The low defect of modified polyisocyanate combined coefficient reaches the mesh for improving Polyether hydrophilic polyisocyanates production efficiency
's.
Embodiment 3: the device further includes having agitating unit 5, and the agitating unit 5 is set in second reaction kettle 3.
The agitating unit 5 includes stirring motor 51 and paddle 52；The stirring motor 51 is fixed on the bottom of second reaction kettle 3
Portion, the paddle 52 are fixed in the rotation axis of the stirring motor 51.In the utility model embodiment, the stirring electricity
Machine 51 is motor, can directly be worked with 220V power supply power supply.The utility model embodiment is reacted using agitating unit 5 second
Raw material in kettle 3 is stirred, so that the raw material in the second reaction kettle 3 is sufficiently mixed；Paddle is driven using stirring motor 51
52 quick rotations accelerate the raw material mixing velocity in the second reaction kettle 3, while the raw material in the second reaction kettle 3 is mixed more
Add and uniformly avoids causing Polyether hydrophilic polyisocyanic acid ester products to close due to the raw material in the second reaction kettle 3 is uneven because mixing
At inefficiency, the combined coefficient of Polyether hydrophilic polyisocyanic acid ester products is further improved, it is hydrophilic to reach raising polyethers
The purpose of modified polyisocyanate production efficiency.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments in the case where not departing from this practical spirit or scope.Therefore, this is practical
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (5)
1. a kind of device for being used to prepare Polyether hydrophilic polyisocyanates includes the second reaction kettle and the second reaction kettle
The mucinous reaction material pot of first feed end connection and the receptacle being connected to the second reaction kettle discharge end；It is characterized in that,
It further include having vacuum pump, filter and nitrogen gas tank；Wherein, the outlet of the air inlet of the vacuum pump and second reaction kettle
Mouth connection；The second reaction kettle discharge end is connected to through the filter with the receptacle；First outlet of the nitrogen gas tank
End is connected to by pipeline with the upper end air inlet of the mucinous reaction material pot, and the second outlet side of the nitrogen gas tank passes through pipeline
It is connected to the upper end air inlet of the receptacle.
2. a kind of device for being used to prepare Polyether hydrophilic polyisocyanates according to claim 1, which is characterized in that
The device further includes having the first reaction kettle and water segregator；Wherein, the discharge end of first reaction kettle is reacted with described second
Second feed end of kettle is connected to；The air inlet of the water segregator is connected to the gas outlet of first reaction kettle, and described first is anti-
The air inlet of kettle and the refluxing opening of the water segregator is answered to be connected to.
3. a kind of device for being used to prepare Polyether hydrophilic polyisocyanates according to claim 1, which is characterized in that
The device further includes having water absorption layer, and the water absorption layer is fixed at the flowing in channel of the filter.
4. a kind of device for being used to prepare Polyether hydrophilic polyisocyanates according to claim 1, which is characterized in that
The device further includes having agitating unit, and the agitating unit is set in second reaction kettle.
5. a kind of device for being used to prepare Polyether hydrophilic polyisocyanates according to claim 4, which is characterized in that
The agitating unit includes stirring motor and paddle；The stirring motor is fixed on the bottom of second reaction kettle, institute
Paddle is stated to be fixed in the rotation axis of the stirring motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729105.9U CN209451849U (en) | 2019-05-19 | 2019-05-19 | A kind of device being used to prepare Polyether hydrophilic polyisocyanates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729105.9U CN209451849U (en) | 2019-05-19 | 2019-05-19 | A kind of device being used to prepare Polyether hydrophilic polyisocyanates |
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| Publication Number | Publication Date |
|---|---|
| CN209451849U true CN209451849U (en) | 2019-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920729105.9U Active CN209451849U (en) | 2019-05-19 | 2019-05-19 | A kind of device being used to prepare Polyether hydrophilic polyisocyanates |
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| CN (1) | CN209451849U (en) |
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