CN209338440U - A kind of refining plant of polyether polyol - Google Patents
A kind of refining plant of polyether polyol Download PDFInfo
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- CN209338440U CN209338440U CN201821808899.XU CN201821808899U CN209338440U CN 209338440 U CN209338440 U CN 209338440U CN 201821808899 U CN201821808899 U CN 201821808899U CN 209338440 U CN209338440 U CN 209338440U
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Abstract
The utility model discloses a kind of refining plants of polyether polyol, including mixed cell and separative unit, separative unit includes the desalination device of at least one connection mixed cell outlet, desalination device has separation inner cavity, it is interior intracavitary to be provided with sample introduction module and separation assembly, separation assembly has the circulation cavity of circulation mixed solution, and is filled in the intracorporal hydrophilic media of flowing lumen.Above-mentioned refining plant, crude polyoxyalkylene polyol is neutralized treated mixed solution is after flowing into desalination device, the alkali ion and moisture in polyether polyol can be removed simultaneously, it simplifies processing step, improve treatment effeciency, it can be avoided polyether polyol loss, obtained polyether polyol neutral and alkali ion concentration is low, smell is small, suitable for producing the polyurethane products of high quality.
Description
Technical field
The utility model belongs to technical field of chemical synthesis, and in particular to a kind of refining plant of polyether polyol.
Background technique
Polyether polyol is one of main synthesis material of polyurethane, and the hydroxyl and polyisocyanates of polyether polyol are anti-
It answers, the polyurethane products such as foamed plastics, synthetic rubber, coating, adhesive, synthetic leather, chemical fibre can be generated.In addition,
Polyether polyol is also used as nonionic surfactant, lubricant, liquid stream body, heat-exchange fluid etc..Polyether polyol hair
Exhibition rapidly, is widely used in the every field of national economy.The synthesis of polyether polyol be usually use alkali metal, alkaline-earth metal or
Its hydroxide is catalyst, the open loop on the initiator of active hydrogen compounds of the epoxides such as ethylene oxide, propylene oxide
Polymerization obtains.
Alkaline metal ions are easily mixed in the crude polyoxyalkylene polyol obtained after polymerization, it is anti-with isocyanates in polyether polyol
When should produce polyurethane, if the content of the metal ions such as the potassium being mixed in polyether polyol, sodium is higher, reaction acutely hair will lead to
Raw, polyurethane products are scrapped because of agglomeration.Therefore, crude polyoxyalkylene polyol is needed by refinement treatment, to remove the metals such as potassium, sodium
Ion.
Currently, the refining methd of polyether polyol is mainly neutralization-filtration method, it is added first to crude polyoxyalkylene polyol acid
Neutralization reagent generates alkali metal salt with the alkaline metal ions in neutralized crude polyethers, and vacuum dehydration makes alkali metal salt crystallization analysis
Out, solid alkali metal salt, the Contents In Polyether Polyol refined are removed finally by filtering.But above-mentioned refining methd
Process is complicated, for the filter effect for improving alkali metal salt, needs longer dewatering time to improve crystal particle diameter；Since polyethers is more
The viscosity of first alcohol is big, easily causes polyether polyol to lose in filter process.Therefore, the refining methd of existing polyether polyol exists
Complicated process steps, processing time are long, and the problems such as compromised yields.
Utility model content
Therefore, the technical problem to be solved by the present invention is to overcome the subtractive process of thick polyether polyols in the prior art
There are complicated process steps, processing time are long, and the defect of polyether polyol compromised yields.
For this purpose, the utility model provides following technical solution:
The utility model provides a kind of refining plant of polyether polyol, including
Mixed cell, the mixed cell have mixing inner cavity, at least two that the mixing inner cavity is in communication with the outside
Injection port and at least one outlet；
Separative unit is connected to the desalination device of the outlet including at least one, and the desalination device has separation inner cavity, will
The first density that the separation inner cavity is in communication with the outside mutually is exported mutually to be exported with the second density, and avoids the first density phase
Outlet mutually exports the mixed solution entrance of setting with second density；The mixed solution entrance is connected to the mixed cell
Outlet, second density are mutually exported positioned at the top that first density mutually exports；
It is intracavitary in the separation to be provided with the sample introduction module being connected with the mixed solution entrance, and the connection sample introduction
The separation assembly of component；The separation assembly includes at least two being arranged in parallel and prolonging the mixed solution circulating direction and extend
Separation member, the sample introduction module is for making the mixed solution equivalent flow into the separation member；The separation member has circulation institute
The circulation cavity of mixed solution is stated, and is filled in the intracorporal hydrophilic media of the flowing lumen.
Optionally, above-mentioned refining plant, first density, which mutually exports, to be opened in the bottom wall of the desalination device,
Second density, which mutually exports, to be opened on the top wall surface of the desalination device, and the mixed solution entrance is opened in the desalination
On the vertical side walls face of device；Alternatively,
First density, which mutually exports, to be opened on the vertical side walls face of the desalination device, and second density mutually exports out
On the top wall surface of the desalination device, the mixed solution entrance is opened on the bottom side wall surface of the desalination device.
Optionally, above-mentioned refining plant further includes presser unit, and it is single that the presser unit is set to the connection mixing
On first pipeline with the separative unit.
Optionally, above-mentioned refining plant, the presser unit have input terminal and output end, and the pipeline is by described defeated
Enter after end penetrates the presser unit and is pierced by by the output end, mixed cell described in the pipeline connection of the neighbouring input terminal,
Separative unit described in the pipeline connection of the neighbouring output end.
Optionally, above-mentioned refining plant, the presser unit are force (forcing) pump.
Optionally, at least two injection ports of above-mentioned refining plant, the mixed cell are disposed adjacent, and described at least one
A outlet is set to the one end of the mixed cell far from the injection port.
Optionally, above-mentioned refining plant, at least two injection ports of the mixed cell include first fluid injection port
With second fluid injection port, the first fluid is crude polyoxyalkylene polyol, and the second fluid is acid solution or water.
Optionally, above-mentioned refining plant, the mixed cell, which is selected from, neutralizes kettle or pipe-line mixer.
Optionally, above-mentioned refining plant, the separation member is in the form of sheets or tubulose.
Optionally, above-mentioned refining plant, the hydrophilic media contain in hydroxyl, amide groups, amino and carboxyl extremely
A kind of few group.
Optionally, above-mentioned refining plant, the hydrophilic media are glass fibre and/or polymer fiber.
Optionally, above-mentioned refining plant, the sample introduction module are set including at least two with separation member one-to-one correspondence
The sample feeding pipe set, the sample feeding pipe connect the mixed solution entrance far from one end of the separation member.
Optionally, above-mentioned refining plant, the separative unit includes at least two desalination devices, far from the mixed cell
Desalination device mixed solution entrance, the second density for being connected to the desalination device of the neighbouring mixed cell mutually exports.
Optionally, above-mentioned refining plant, the use temperature of the desalination device are 50-180 DEG C, the use of pressure are 0.1-
2Mpa；Preferably, the use temperature is 60-120 DEG C.
The utility model has the advantages that compared with the prior art
1, the refining plant of polyether polyol provided by the utility model, including mixed cell and separative unit, mixing are single
Member has mixing inner cavity, at least two injection ports and at least one outlet that the mixing inner cavity is in communication with the outside.It is thick poly-
Ethoxylated polyhydric alcohol and acid solution or water pass through different injection ports respectively and flow into mixing inner cavity, in mixing inner cavity carries out and/or dilute
Processing is released, the mixed solution of formation flows out mixed cell by outlet.
Separative unit includes the desalination device of the outlet of at least one connection mixed cell, and mixed solution is flowed out by outlet
After mixed cell, the mixed solution entrance through desalination device flows into separation inner cavity, completes the purification of polyether polyol in separation inner cavity
Process: mixed solution flows into the sample introduction module being connected with mixed solution entrance first, by sample introduction module mixed solution by etc.
Amount is diverted at least two separation members of separation assembly, and separation member is arranged in parallel and prolongs along the circulating direction of mixed solution
It stretches.During mixed solution circulates in the flowing lumen body of separation member, hydrophilic media can be flowed through, due to hydrophilic media
Hydrophily, the polyether polyol in mixed solution flow out first after flowing through hydrophilic media, are collected as the second density phase liquid；
And after the aqueous phase droplets in mixed solution are contacted with hydrophilic media, it is attracted to hydrophilic media surface, and with mixing
The circulation of solution, aqueous phase droplets are constantly in hydrophilic media surface aggregation, and after reaching certain volume, aqueous phase droplets are made in gravity
It is detached from lower with hydrophilic media, aggregation forms the first density phase liquid.
Due to being dissolved with alkali metal ion and/or alkaline-earth metal ions in first density phase liquid, density is greater than second
Density phase liquid, after settling a period of time, the first density phase liquid pools are in the lower section of the second density phase liquid, via first
Density mutually exports outflow separation inner cavity；The density of second density phase liquid is smaller, mutually exports top via the first density is located at
Second density mutually exports outflow separation inner cavity, the polyether polyol refined.
Purification can be made without processes such as filtering, dehydration, absorption using the refining plant of above-mentioned polyether polyol
Polyether polyol, efficiently separate remaining alkali metal, alkaline-earth metal ions in polyether polyol, and remove in polyether polyol
Extra moisture, total aldehyde content low (≤3ppm), smell are small in polyether polyol, and environment friendly is high.Above-mentioned refining plant
It is capable of the refinement treatment of step realization polyether polyol, and simplifies processing step, improves treatment effeciency, and can effectively avoid
The loss of polyether polyol.Polyether polyol obtained can be directly used for synthesis of polyurethane product, and can be reduced polyurethane production
Side reaction in product synthesis process improves the quality of the polyurethane products of synthesis.
2, refining plant provided by the utility model, the first density, which mutually exports, to be opened in the bottom wall of desalination device, the
Two density, which mutually export, to be opened on the top wall surface of desalination device；Alternatively, the first density mutually exports the vertical side for being opened in desalination device
On wall surface, the second density, which mutually exports, to be opened on the top wall surface of desalination device.That is, the position for exporting the second density mutually is higher than
First density mutually exports, and can utilize the density contrast of the second density phase liquid and the first density phase liquid, make in two liquid via
Desalination device is discharged in different outlets, completes subtractive process.
3, refining plant provided by the utility model, further includes presser unit, and presser unit is set to connection mixed cell
On the pipeline of separative unit.The mixed solution in mixed cell is pumped into separative unit using presser unit, and makes to separate
Certain pressure is maintained in unit, to complete the subtractive process of polyether polyol in the separation inner cavity of desalination device.
4, refining plant provided by the utility model, sample introduction module include that at least two and separation member are arranged in a one-to-one correspondence
Sample feeding pipe, sample feeding pipe connect the mixed solution entrance far from one end of separation member.Mixed solution is flowed into through mixed solution entrance
It after sample introduction module, is equably branched in a sample feeding pipe first, then flow to point to connect one to one with it through sample feeding pipe
Off member.Using sample introduction module, mixed solution can be made equally to be diverted into each separation member, and realize first on separation member
The separation process of density phase liquid and the second density phase liquid is conducive to the separative efficiency for improving liquid by control flow, into
And improve the refining effect of polyether polyol.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural representation of the refining plant of the polyether polyol provided in the first embodiment of the utility model
Figure；
Fig. 2 is the structural representation of the refining plant of the polyether polyol provided in second of embodiment of the utility model
Figure；
Fig. 3 is the structural representation of the refining plant of the polyether polyol provided in the third embodiment of the utility model
Figure；
Fig. 4 is the structural representation of the refining plant of the polyether polyol provided in the 4th kind of embodiment of the utility model
Figure；
Fig. 5 is the structural representation of the refining plant of the polyether polyol provided in the 5th kind of embodiment of the utility model
Figure；
Fig. 6 is the structural representation of the refining plant of the polyether polyol provided in the 6th kind of embodiment of the utility model
Figure；
Description of symbols:
1- mixed cell, 11- first fluid injection port, 12- second fluid injection port, 13- mixing inner cavity, 14 go out sample
Mouthful, 15- gas is passed through mouth；2- separative unit, 21- mixed solution entrance, the second density of 22- mutually export, and 23- first is close
Degree mutually exports, and 24- separates inner cavity, 25- sample introduction module, 26- separation assembly；3- presser unit；4- pipeline.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
Specific experiment step or condition person are not specified in embodiment, according to the literature in the art described routine experiment
The operation of step or condition can carry out.Reagents or instruments used without specified manufacturer, being can be by commercially available acquisition
Conventional reagent product.
Embodiment 1
The present embodiment provides a kind of refining plant of polyether polyol, including mixed cell 1, presser unit 3 and separation are single
Member 2.Wherein, presser unit 3 is located on the pipeline 4 of connection mixed cell 1 and separative unit 2.
Mixed cell 1 has mixing inner cavity 13, and will mix two injection ports and one that inner cavity 13 is in communication with the outside
Outlet 14.As shown in Figure 1, mixed cell 1 is to neutralize kettle, two injection ports are respectively setting in and on kettle vertical side walls face
First fluid injection port 11, and the second fluid injection port 12 in being arranged in and on kettle top portion wall surface neutralizes the base wall of kettle
Outlet 14 is offered on face.
The outlet 14 of mixed cell 1 is connected to presser unit 3 by pipeline 4, for example, force (forcing) pump.Force (forcing) pump has input
End and output end are pierced by after pipeline 4 penetrates force (forcing) pump by input terminal by output end.Wherein, the pipeline 4 of neighbouring input terminal is connected to
The pipeline 4 of mixed cell 1, neighbouring output end is connected to separative unit 2.Force (forcing) pump is installed on pipeline 4, can be increased in pipeline 4
The pressure of liquid makes mixed solution be delivered to separative unit 2 by mixed cell 1.
Separative unit 2 includes the desalination device of connection 1 outlet 14 of mixed cell, and desalination device has separation inner cavity 24,
It the first density that is in communication with the outside of inner cavity 24 will be separated mutually exports 23 and mutually export 22 with the second density, and avoid the first density phase
Outlet 23 mutually exports 22 mixed solution entrance 21 with the second density.As shown in Figure 1, mixed solution entrance 21 is opened in desalination device
Vertical side walls face on, the first density mutually exports 23 and is opened in the bottom wall of desalination device, and the second density, which is mutually open, to be opened in
On the top wall surface of desalination device.After the pipeline 4 of connection neutralization kettle and desalination device is pierced by by the output end of force (forcing) pump, it is connected to desalination
The mixed solution entrance 21 of device.
Sample introduction module 25 and separation assembly 26 are provided in separation inner cavity 24, sample introduction module 25 connects mixed solution entrance 21
With separation assembly 26, as shown in Figure 1, separation assembly 26 includes 4 separation members disposed in parallel, separation member in a tubular form, and edge
The circulating direction of mixed solution extends；25 one end of sample introduction module connects four separation members, and the other end connects mixed solution entrance 21,
4 sample feeding pipes being arranged in a one-to-one correspondence with separation member are internally provided in sample introduction module 25, one end connection tubulose of sample feeding pipe
Separation member, one end far from separation member are connected to mixed solution entrance 21.The mixed solution flowed by mixed solution entrance 21, it is first
It first flows into sample introduction module 25, and is equably branched in each isocon, it is then corresponding to flow into each separation member.Utilize sample introduction
Component 25 can be realized and flow into mixed solution equivalent in each separation member of separation assembly 26.
Each separation member of separation assembly 26 has the circulation cavity of circulation mixed solution, is filled with hydrophily in flowing lumen body
Medium, hydrophilic media are the glass fibre containing at least one of hydroxyl, amide groups, amino and carboxyl group, polymer
Fiber or the two are mixed to form.For example, hydrophilic media is the glass fibre for being connected with hydroxyl.Rich in pole in hydrophilic media
Property group, parent attached power with higher to water.
Refining plant in this embodiment is in the purification for polyether polyol: firstly, neutralizing kettle by being provided with
First fluid injection port 11 is passed through acid solution into neutralization kettle, for example, phosphoric acid solution, passes through the second for being provided with and neutralizing on kettle
Body injection port 12 is passed through crude polyoxyalkylene polyol into neutralization kettle.In and in the mixing inner cavity 13 of kettle, acid solution and thick polyethers are more
First alcohol stirs and evenly mixs, and carries out the neutralisation treatment to crude polyoxyalkylene polyol, remains in the catalyst in crude polyoxyalkylene polyol with alkali gold
Belong to or alkaline-earth metal ions are dissolved in the water, and divide in polyether polyol in droplets, obtains more containing thick polyethers
The mixed solution of first alcohol.
Then, the outlet 14 in the neutralized bottom portion of mixed solution flows out, and flows to desalination device by connecting line 4.?
When flowing through force (forcing) pump, mixed solution is pierced by after being penetrated in pipeline 4 by the input terminal of force (forcing) pump by output end, and force (forcing) pump is to pipeline
In 4 liquid pressurization, make mixed solution via continue after force (forcing) pump to desalination device convey.
Mixed solution 4 is delivered to desalination device by the road, the mixed solution entrance through being opened on desalination device vertical side walls face
21 flow into the separation inner cavity 24 of desalination device.In separation inner cavity 24, mixed solution is flowed into first in the sample feeding pipe of sample introduction module 25
It is shunted, then flows into through sample feeding pipe equivalent and corresponded in the separation member being connected to sample feeding pipe.Mixed solution is in separation member
Flowing lumen body in during circulation, hydrophilic media can be flowed through, due to the hydrophily of hydrophilic media, in mixed solution
Polyether polyol flows out first after flowing through hydrophilic media, is collected as the second density phase liquid；And the water phase in mixed solution
After drop is contacted with hydrophilic media, it is attracted to hydrophilic media surface, and with the circulation of mixed solution, aqueous phase droplets
Constantly in hydrophilic media surface aggregation, after reaching certain volume, aqueous phase droplets are de- with hydrophilic media under the effect of gravity
From aggregation forms the first density phase liquid.
Due to being dissolved with alkali metal ion and/or alkaline-earth metal ions in first density phase liquid, density is greater than second
Density phase liquid, after settling a period of time, the first density phase liquid pools are in the lower section of the second density phase liquid, through being opened in
The first density in desalination device bottom wall mutually exports 23 outflows separation inner cavity 24；The density of second density phase liquid is smaller, warp
The second density by being opened in wall surface at the top of desalination device mutually exports 22 outflows separation inner cavity 24, while realizing alkali in polyether polyol
The removal of metal, alkaline-earth metal ions and moisture, the polyether polyol refined.
Can be achieved at the same time using above-mentioned refining plant to catalyst metal ion remaining in polyether polyol and
The removal of moisture simplifies the purification step of polyether polyol, improves the purification efficiency of polyether polyol.Obtained polyethers is more
Total aldehyde content low (≤3ppm), smell are small in first alcohol, and environment friendly is high.Polyether polyol neutral and alkali metal ion is effectively gone
It removes, can be directly used for synthesis of polyurethane product, and can be reduced the side reaction in polyurethane products synthesis process, improve synthesis
The quality of polyurethane products.
It, can be with positioned at the force (forcing) pump neutralized on kettle and desalination device connecting pipeline 4 as first of the present embodiment deformation
Had by other and presser unit 3 of 4 function of increasing pressure of pipeline is substituted, for example, peristaltic pump, diaphragm pump etc..
It, can not also on the pipeline 4 of connection mixed cell 1 and separative unit 2 as second deformation of the present embodiment
Presser unit 3 is set, to be passed through high-pressure inert gas instead of presser unit 3 into neutralization kettle, passes through the high pressure inert gas being passed through
Body (for example, nitrogen) increases reacting kettle inner pressure, and then increases by the mixed solution in 14 feed line 4 of outlet of reaction kettle
Pressure, so that mixed solution is delivered to separative unit 3, and still remain with certain pressure after flowing into desalination device.
Third as the present embodiment deforms, and separation member may be arranged as other shapes, for example, sheet, as long as making
Separation member has the separation inner cavity 24 filled with hydrophilic media, makes to carry out the subtractive process of polyether polyol in separation inner cavity 24
?.As further deformation, hydrophilic media can also be the glass fibre containing other hydrophilic radicals, polymer fiber
Or the two is mixed to form, such as amide groups, amino or carboxyl etc..As further deformation, hydrophilic media can be with
Comprising two or more hydrophilic radical, as long as enabling hydrophilic media that there is preferable hydrophilicity, realize to water
The absorption of phase drop.
The 4th deformation as the present embodiment can also be into mixing by neutralizing the second fluid injection port 12 of kettle
It is passed through water in chamber 13, crude polyoxyalkylene polyol is diluted, the alkaline metal ions in crude polyoxyalkylene polyol is dissolved, then carries out
Subsequent subtractive process.
Embodiment 2
The present embodiment provides a kind of refining plants of polyether polyol, compared with the refining plant that embodiment 1 provides, difference
It is:
As shown in Figure 1, mixed cell 1 is pipe-line mixer, the opening of pipe-line mixer axial ends is respectively first-class
Body injection port 11 and outlet 14, offer second fluid injection port 12, pipe-line mixer in the side wall surface of pipe-line mixer
Inside has mixing inner cavity 13.Crude polyoxyalkylene polyol is by 11 flow ipe mixer of first fluid injection port, acid solution is by
Two fluid injection ports, 12 flow ipe mixer is neutralized in mixing inner cavity 13, and obtained mixed solution is by going out sample
Mouth 14 flows out pipe-line mixers, continues to convey to separative unit 2.
Embodiment 3
The present embodiment provides a kind of refining plants of polyether polyol, compared with the refining plant that embodiment 1 provides, difference
It is:
As shown in figure 3, the mixed solution entrance 21 of desalination device is opened in the bottom wall of desalination device, the first density mutually goes out
Mouth 23 is opened on the vertical side walls face of desalination device, and the second density, which is mutually open, to be opened on the top wall surface of desalination device.It mixes molten
Liquid is flowed into the separation inner cavity 24 of desalination device by the entrance of bottom, is branched in each separation member through sample introduction module 25 by equivalent, is being divided
Aggregation, the separation process of the first density phase liquid and the second density phase liquid are carried out in off member, the first density phase liquid contains alkali
Property metal ion, density is larger, after settlement by be located at side wall surface on the first density mutually export 23 outflows；Second density phase liquid
Body is that polyether polyol density is smaller, mutually exports 22 discharges by second density at top, the polyether polyol refined.
Presser unit 3 is not provided between mixed cell 1 and separative unit 2, that is, connecting pipe mixer and desalination device
Pipeline 4 on be not provided with force (forcing) pump, neutralize and offer gas on the top wall surface of kettle and be passed through mouth 15, by gas be passed through mouth 15 to
It neutralizes in kettle and is passed through high-pressure inert gas, to increase the pressure neutralized in kettle, and then increase and flowed by the outlet 14 of reaction kettle
The pressure of mixed solution in pipeline 4 makes mixed solution be delivered to separative unit 3, and still remains with one after flowing into desalination device
Fixed pressure.
Embodiment 4
The present embodiment provides a kind of refining plants of polyether polyol, compared with the refining plant that embodiment 2 provides, difference
It is:
As shown in figure 4, presser unit 3 is not provided between mixed cell 1 and separative unit 2, that is, connecting pipe mixes
It is not provided with force (forcing) pump on the pipeline 4 of device and desalination device, pipeline 4 is connected to the mixing of desalination device by the outlet 14 of pipe-line mixer
Solution inlet 21.In actual use, the relative position of pipe-line mixer and desalination device can be configured, makes to be mixed by pipeline
The mixed solution that the outlet 14 of clutch flows out, under the effect of gravity, can smooth delivery of power to desalination device, and after entering desalination device
Keep certain pressure.
As deformation, mixed cell 1 can also be neutralization kettle, be configured to the position for neutralizing kettle and desalination device, equally
It can be realized the mixed solution smooth delivery of power of neutralization kettle outflow to desalination device.
Embodiment 5
The present embodiment provides a kind of refining plants of polyether polyol, compared with the refining plant that embodiment 4 provides, difference
It is:
As shown in figure 5, the mixed solution entrance 21 of desalination device is opened in the bottom wall of desalination device, the first density mutually goes out
Mouth 23 is opened on the vertical side walls face of desalination device, and the second density, which is mutually open, to be opened on the top wall surface of desalination device.To pipeline
The relative position of mixer and desalination device is configured, and makes the mixed solution flowed out by the outlet 14 of pipe-line mixer, in weight
Under power effect, can smooth delivery of power to desalination device, and after entering desalination device keep certain pressure.Then divided in desalination device
From for the first density phase liquid and the second density phase liquid, 23 are mutually exported by the first density respectively and mutually exports 22 rows with the second density
Out, the subtractive process of polyether polyol is realized.
As deformation, mixed cell 1 can also be neutralization kettle, be configured to the position for neutralizing kettle and desalination device, equally
It can be realized the mixed solution smooth delivery of power of neutralization kettle outflow to desalination device, and keep certain pressure after entering desalination device.
Embodiment 6
The present embodiment provides a kind of refining plants of polyether polyol, compared with the refining plant that embodiment 1 provides, difference
It is:
As shown in Figure 1, separative unit 2 includes two desalination devices in sequential series, it, will neighbouring mixing list for the ease of statement
The desalination device of member 1 is named as the first desalination device, and the desalination device that will be far from mixed cell 1 is named as the second desalination device, the first desalination
Second density of device mutually exports the 22 mixed solution entrances 21 that the second desalination device is connected to by pipeline 4, by the first desalination device essence
Polyether polyol after system 4 is delivered to the second desalination device by the road, carries out secondary refining process.Polyethers provided in this embodiment is more
The refining plant of first alcohol has carried out secondary separation with moisture to the alkaline metal ions in polyether polyol, has further improved
The purity of polyether polyol has more preferably refining effect, is suitable for the application of in the high field to polyether polyol quality requirements.
As deformation, the quantity of desalination device can also be 3,4 etc., reach needed for concrete foundation polyether polyol
Purity rubric is configured.
Embodiment 7
The present embodiment provides a kind of refining methd of polyether polyol, the polyether polyol that is provided in Application Example 1
Refining plant, refining methd include the following steps:
(1) 10 tons of crude polyoxyalkylene polyol (t), the phosphoric acid solution 47kg of 75wt% are passed through in Xiang Zhonghe kettle；Thick polyether polyols
The molecular weight of alcohol is 4800, wherein the content of the potassium hydroxide mixed is 2000mg/kg；1h is stirred in and in kettle, neutralizes kettle
Interior temperature control is 60 DEG C, is neutralized to crude polyoxyalkylene polyol, the potassium ion mixed in polyether polyol is made to be dissolved in water
In, and be scattered in polyether polyol in the form of aqueous phase droplets.
(2) after neutralized processing, the mixed solution containing polyether polyol is obtained, the pH of mixed solution is 5.5, and temperature is
60 DEG C, the mass fraction of water is 5%.Mixed solution flows through force (forcing) pump and is pressurized, make the pressure of mixed solution improve to
0.5Mpa。
Then, mixed solution is passed through in desalination device, mixed solution flows through the hydrophilic media in separation member, due to medium
Hydrophily, the polyether polyol in mixed solution flows out first after flowing through hydrophilic media, is collected as the second density phase liquid
Body；And after the aqueous phase droplets in mixed solution are contacted with hydrophilic media, it is attracted to hydrophilic media surface, and with mixed
The circulation of solution is closed, aqueous phase droplets are constantly in hydrophilic media surface aggregation, and after reaching certain volume, aqueous phase droplets are in gravity
Effect is lower and hydrophilic media is detached from, and aggregation forms the first density phase liquid.
Containing potassium ion in (3) first density phase liquid, density is relatively larger than polyether polyol, after settling 1h, first
Density phase liquid pools are separated in the bottom of desalination device with polyether polyol, by the first density phase liquid and polyether polyol point
It is discharged from being exported respectively by the first density outlet of desalination device and the second density, the polyether polyol refined.
Metal ion, water content and the total aldehyde content of polyether polyol after measurement purification, measure result are as follows: potassium ion contains
Amount is 3.1mg/kg, and the mass fraction of water is 0.031%；Total aldehyde content is 1.65ppm, wherein formaldehyde 0.86ppm, acetaldehyde
0.59ppm, methacrylaldehyde 0.
Embodiment 8
The present embodiment provides a kind of refining methd of polyether polyol, the polyether polyol that is provided in Application Example 2
Refining plant, refining methd include the following steps:
(1) crude polyoxyalkylene polyol and 25wt%, flow 72kg/ that flow is 5t/h are passed through simultaneously into pipe-line mixer
The phosphoric acid solution of h；The molecular weight of crude polyoxyalkylene polyol is 4800, wherein the content of the potassium hydroxide mixed is 2050mg/kg；Pipe
In road mixer temperature control be 80 DEG C, crude polyoxyalkylene polyol is neutralized, make the potassium mixed in polyether polyol from
Son is soluble in water, and is scattered in polyether polyol in the form of aqueous phase droplets.
(2) after neutralized processing, the mixed solution containing polyether polyol is obtained, the pH of mixed solution is 5.5, and temperature is
80 DEG C, the mass fraction of water is 5%.Mixed solution flows through force (forcing) pump and is pressurized, make the pressure of mixed solution improve to
0.1Mpa。
Then, mixed solution is passed through in desalination device, mixed solution flows through the hydrophilic media in separation member, due to medium
Hydrophily, the polyether polyol in mixed solution flows out first after flowing through hydrophilic media, is collected as the second density phase liquid
Body；And after the aqueous phase droplets in mixed solution are contacted with hydrophilic media, it is attracted to hydrophilic media surface, and with mixed
The circulation of solution is closed, aqueous phase droplets are constantly in hydrophilic media surface aggregation, and after reaching certain volume, aqueous phase droplets are in gravity
Effect is lower and hydrophilic media is detached from, and aggregation forms the first density phase liquid.
Containing potassium ion in (3) first density phase liquid, density is relatively larger than polyether polyol, after settling 1h, first
Density phase liquid pools are separated in the bottom of desalination device with polyether polyol, by the first density phase liquid and polyether polyol point
It is discharged from being exported respectively by the first density outlet of desalination device and the second density, the polyether polyol refined.
Metal ion, water content and the total aldehyde content of polyether polyol after measurement purification, measure result are as follows: potassium ion contains
Amount is 3.06mg/kg, and the mass fraction of water is 0.032%；Total aldehyde content is 1.54ppm, wherein formaldehyde 0.91ppm, acetaldehyde
0.63ppm, methacrylaldehyde 0.
Embodiment 9
The present embodiment provides a kind of refining methd of polyether polyol, the polyether polyol that is provided in Application Example 3
Refining plant, refining methd include the following steps:
(1) crude polyoxyalkylene polyol 10t, the phosphoric acid solution 75kg of 50wt% are passed through in Xiang Zhonghe kettle；Crude polyoxyalkylene polyol
Molecular weight is 4800, wherein the content of the potassium hydroxide mixed is 2100mg/kg；1h is stirred in and in kettle, neutralizes temperature in kettle
Degree control is 80 DEG C, is neutralized to crude polyoxyalkylene polyol, keeps the potassium ion mixed in polyether polyol soluble in water, and
It is scattered in polyether polyol in the form of aqueous phase droplets.
(2) after neutralized processing, the mixed solution containing polyether polyol is obtained, the pH of mixed solution is 5.5, and temperature is
80 DEG C, the mass fraction of water is 8%.Mouth involvement high-pressure inert gas N into neutralization kettle is passed through by gas2, make mixed solution
Pressure improve to 0.5Mpa.
Then, mixed solution is passed through in desalination device, mixed solution flows through the hydrophilic media in separation member, due to medium
Hydrophily, the polyether polyol in mixed solution flows out first after flowing through hydrophilic media, is collected as the second density phase liquid
Body；And after the aqueous phase droplets in mixed solution are contacted with hydrophilic media, it is attracted to hydrophilic media surface, and with mixed
The circulation of solution is closed, aqueous phase droplets are constantly in hydrophilic media surface aggregation, and after reaching certain volume, aqueous phase droplets are in gravity
Effect is lower and hydrophilic media is detached from, and aggregation forms the first density phase liquid.
Containing potassium ion in (3) first density phase liquid, density is relatively larger than polyether polyol, after settling 1h, first
Density phase liquid pools are separated in the bottom of desalination device with polyether polyol, by the first density phase liquid and polyether polyol point
It is discharged from being exported respectively by the first density outlet of desalination device and the second density, the polyether polyol refined.
Metal ion, water content and the total aldehyde content of polyether polyol after measurement purification, measure result are as follows: potassium ion contains
Amount is 2.9mg/kg, and the mass fraction of water is 0.026%；Total aldehyde content 1.38ppm, wherein formaldehyde 0.85ppm, acetaldehyde
0.53ppm, methacrylaldehyde 0.
Embodiment 10
The present embodiment provides a kind of refining methd of polyether polyol, the polyether polyol that is provided in Application Example 6
Refining plant, refining methd include the following steps:
(1) the phosphoric acid solution 180kg of crude polyoxyalkylene polyol 5t and 10wt% are passed through in Xiang Zhonghe kettle；Crude polyoxyalkylene polyol
Molecular weight is 4800, wherein the content of the potassium hydroxide mixed is 2150mg/kg；1h is stirred in and in kettle, neutralizes temperature in kettle
Degree control is 120 DEG C, is neutralized to crude polyoxyalkylene polyol, keeps the potassium ion mixed in polyether polyol soluble in water,
And it is scattered in polyether polyol in the form of aqueous phase droplets.
(2) after neutralized processing, the mixed solution containing polyether polyol is obtained, the pH of mixed solution is 5.5, and temperature is
120 DEG C, the mass fraction of water is 10%, and mixed solution flows through force (forcing) pump and carries out pressurized treatment, makes mixed solution pressure 2Mpa.
Then, mixed solution is passed through in desalination device, mixed solution flows through the hydrophilic media in separation member, due to medium
Hydrophily, the polyether polyol in mixed solution flows out first after flowing through hydrophilic media, is collected as the second density phase liquid
Body；And after the aqueous phase droplets in mixed solution are contacted with hydrophilic media, it is attracted to hydrophilic media surface, and with mixed
The circulation of solution is closed, aqueous phase droplets are constantly in hydrophilic media surface aggregation, and after reaching certain volume, aqueous phase droplets are in gravity
Effect is lower and hydrophilic media is detached from, and aggregation forms the first density phase liquid.
Containing potassium ion in (3) first density phase liquid, density is relatively larger than polyether polyol, after settling 1h, first
Density phase liquid pools are separated in the bottom of desalination device with polyether polyol, by the first density phase liquid and polyether polyol point
It is discharged from being exported respectively by the first density outlet of desalination device and the second density, the polyether polyol refined.
Metal ion, water content and the total aldehyde content of polyether polyol after measurement purification, measure result are as follows: potassium ion contains
Amount is 2mg/kg, and the mass fraction of water is 0.034%, total aldehyde content 1.31ppm, wherein formaldehyde 0.87ppm, acetaldehyde
0.44ppm, methacrylaldehyde 0.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (10)
1. a kind of refining plant of polyether polyol, which is characterized in that including
Mixed cell (1), the mixed cell (1) have mixing inner cavity (13), the mixing inner cavity (13) are in communication with the outside
At least two injection ports and at least one outlet (14)；
Separative unit (2), the desalination device of the outlet (14) is connected to including at least one, and the desalination device has separation inner cavity
(24), the first density that separation inner cavity (24) is in communication with the outside mutually is exported into (23) and mutually exports (22) with the second density, with
And it avoids first density and mutually exports the mixed solution entrance (21) that (23) mutually export (22) setting with second density；Institute
The outlet that mixed solution entrance (21) are connected to the mixed cell (1) is stated, second density mutually exports (22) positioned at described
First density mutually exports the top of (23)；
The sample introduction module (25) being connected with the mixed solution entrance (21), and connection are provided in separation inner cavity (24)
The separation assembly (26) of the sample introduction module (25)；The separation assembly (26) is arranged in parallel and including at least two along described mixed
The separation member that solution circulating direction extends is closed, the sample introduction module (25) is for making the mixed solution equivalent flow into the separation
Part；The separation member has the circulation cavity for the mixed solution that circulates, and is filled in the intracorporal hydrophily of the flowing lumen and is situated between
Matter.
2. refining plant according to claim 1, which is characterized in that first density mutually export (23) be opened in it is described
In the bottom wall of desalination device, second density mutually exports (22) and is opened on the top wall surface of the desalination device, described mixed
Solution inlet (21) are closed to be opened on the vertical side walls face of the desalination device；Alternatively,
First density mutually exports (23) and is opened on the vertical side walls face of the desalination device, and second density mutually exports
(22) it is opened on the top wall surface of the desalination device, the mixed solution entrance (21) is opened in the bottom side of the desalination device
On wall surface.
3. refining plant according to claim 1, which is characterized in that further include presser unit (3), the presser unit
(3) it is set on the pipeline (4) for being connected to the mixed cell (1) and the separative unit (2).
4. refining plant according to claim 3, which is characterized in that the presser unit (3) has input terminal and output
End, the pipeline (4) are penetrated after the presser unit (3) by the input terminal and are pierced by by the output end, the neighbouring input
The pipeline (4) at end is connected to the mixed cell (1), and the pipeline (4) of the neighbouring output end is connected to the separative unit (2).
5. refining plant according to claim 3, which is characterized in that the presser unit (3) is force (forcing) pump.
6. refining plant according to claim 1-3, which is characterized in that at least the two of the mixed cell (1)
A injection port is disposed adjacent, at least one described outlet (14) is set to the mixed cell (1) far from the injection port
One end.
7. refining plant according to claim 1-3, which is characterized in that at least the two of the mixed cell (1)
A injection port includes first fluid injection port (11) and second fluid injection port (12), and the first fluid is thick polyether polyols
Alcohol, the second fluid are acid solution or water.
8. refining plant according to claim 1-3, which is characterized in that the mixed cell (1), which is selected from, to be neutralized
Kettle or pipe-line mixer.
9. refining plant according to claim 1-3, which is characterized in that the sample introduction module (25) includes at least
Two sample feeding pipes being arranged in a one-to-one correspondence with the separation member, one end connection of the sample feeding pipe far from the separation member are described mixed
It closes solution inlet (21).
10. refining plant according to claim 1-3, which is characterized in that the separative unit (2) includes at least
Two desalination devices, the mixed solution entrance (21) of the desalination device far from the mixed cell (1) are connected to the neighbouring mixed cell
(1) the second density of desalination device mutually exports (22).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3747929A4 (en) * | 2018-11-02 | 2021-03-24 | Jiahua Chemistry (Binzhou) Co., Ltd | Polyether polyol refining method and refining apparatus |
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| EP3747929A4 (en) * | 2018-11-02 | 2021-03-24 | Jiahua Chemistry (Binzhou) Co., Ltd | Polyether polyol refining method and refining apparatus |
| US11938416B2 (en) | 2018-11-02 | 2024-03-26 | Jiahua Chemistry (Binzhou) Co., Ltd. | Polyether polyol refining method and refining apparatus |
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