CN105289415B - The production system and method for polyurethane - Google Patents
The production system and method for polyurethane Download PDFInfo
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- CN105289415B CN105289415B CN201510728095.3A CN201510728095A CN105289415B CN 105289415 B CN105289415 B CN 105289415B CN 201510728095 A CN201510728095 A CN 201510728095A CN 105289415 B CN105289415 B CN 105289415B
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Abstract
The present invention relates to a kind of production system of polyurethane and method, belong to high polymer material manufacture field.The production system includes：Storage tank, including raw material storage tank and addition agent storage tank；Reactor, provided with charging aperture, discharging opening and vacuum port；Metering system, including measuring tank, metering electronic scales, metering air valve, raw material air valve, raw material measuring pump, auxiliary agent air valve, auxiliary agent measuring pump, raw material storage tank and addition agent storage tank are respectively communicated with measuring tank, and measuring tank connects the charging aperture of reactor；Vacuum system connects the vacuum port of reactor；Temperature control system, including heating system and cooling system；And control system, with metering system, vacuum system, temperature control system and reactor electrical connection.Realize that closed full automatic metaplasia is produced using the production system and method, both avoided the mistake that manually operates and may bring, product quality is improved again, and be particularly suitable for promoting the use in the industrial production.
Description
Technical field
Field, the production system and method for more particularly to a kind of polyurethane are manufactured the present invention relates to high polymer material.
Background technology
Pouring-type heat-insulation aluminum section is to be bonded to inside and outside two parts of aluminium section bar by the polyurethane adiabatic gum of moulding by casting
Formed by one entirety, so as to reach energy-conservation purpose.Polyurethane adiabatic gum be by two kinds of components i.e. isocyanates with it is modified
PPG mix according to a certain percentage after, occur Quick cross-linking reaction obtained from high molecular polymer.This polymerization
Thing is made up of soft chain segment and hard segment block, with relatively higher mechanical strength, adhesive strength, can replace the shapes such as rivet, bolt
Formula connects to carry out the structure of aluminium section bar.
But, product stability of this pouring-type heat-insulation aluminum section production technology to polyurethane adiabatic gum, moisture
Very high Deng parameter request, this requires that the production equipment of polyurethane adiabatic gum, technological level are very high, in polyurethane adiabatic gum
Production process in, it is necessary to be modified processing to PPG to obtain required component.
And in the prior art, for heat-insulation aluminum section with the production of polyurethane adiabatic gum mostly using the method for hand stock
Different raw materials is added in reactor in a certain order successively, according to specific technological reaction it is complete after pass through people again
Work discharging, packaging.Although this method has easy to operate, the very simple advantage of production control, still there is many lack in it
Point：(1) production system is open, is not closed, and the artificial loading time is long, and the time is long in atmosphere for material exposure, especially
It is the moisture in easy absorption air when damp and hot weather is produced, unavoidably can be toward artificially drawing in material in artificial operating process
Enter the debris such as sweat, cause finished product unqualified；(2) material pump device will be passed in and out frequently from different Raw material pails, easily be spilt, both dirty
Workshop condition is contaminated, while material loss is also big；(3) human metering is used completely, metering mistake easily occurs, causing to feed intake has
By mistake；(4) labor intensity is big, low production efficiency；(5) due to aforementioned drawback, make production stability poor, may all be deposited per batch quality
In difference.
The content of the invention
Based on this, it is necessary in view of the above-mentioned problems, the production system and method for a kind of polyurethane are provided, using the production system
System and method, can realize the automated production of polyurethane adiabatic gum, it is to avoid issuable various problems in artificial operation
And defect, improve production efficiency and product quality.
A kind of production system of polyurethane, including：
Storage tank, including raw material storage tank and addition agent storage tank；
Reactor, which is provided with charging aperture, discharging opening and vacuum port；
Metering system, including measuring tank, metering electronic scales, metering air valve, raw material air valve, raw material measuring pump, auxiliary agent air valve,
Auxiliary agent measuring pump, the metering electronic scales are used to weigh for measuring tank, and the raw material storage tank and addition agent storage tank pass through pipeline respectively
Measuring tank is connected, the measuring tank is by the charging aperture of pipeline connection reactor, and the metering air valve is located at measuring tank and charging
On pipeline between mouthful, the raw material air valve and raw material measuring pump are described on the pipeline between raw material storage tank and measuring tank
Auxiliary agent air valve and auxiliary agent measuring pump are on the pipeline between addition agent storage tank and measuring tank；
Vacuum system, passes through the vacuum port of pipeline connection reactor；
Temperature control system, including the heating system for being heated for reactor and the cooling system for cooling for reactor；
And
Control system, is electrically connected with metering system, vacuum system, temperature control system and reactor, based on monitoring and controlling
The operation of amount system, vacuum system, temperature control system and reactor.
The production system of above-mentioned polyurethane, metering system, vacuum system, temperature control system are controlled using computer control system
And reactor, whole production line can be made to be automatically performed by computer, various controls are automatically adjusted according to the factory formula of setting
Parameter, is automatically performed production, and each parameter tracking record is stored in computer, it is to avoid the mistake that human metering occurs, makes
Each batch products quality it is homogeneous, stability is good.And the production of closed full automatic metaplasia is realized, raw material and car is not only avoid
Between environment mutual pollution, realize clean manufacturing, influence of the change of environment temperature, humidity to product quality can also be avoided,
Further increase the quality of product.
In one of the embodiments, the production system also includes the bulking system electrically connected with control system, the filling
Dress system include filling pipeline, filling measurement pump, filling air valve and for for dispense weighing products electronic pouring scale, the filling
Tubulature road one end connects the discharging opening of reactor, and the other end is used to export obtained product, the filling measurement pump and filling gas
Valve is on filling pipeline.By combining bulking system, whole production and filling overall process is set all to realize automation, on the one hand
Product can be avoided to be influenceed by external environment, on the other hand can also avoid what artificial operation may be brought to greatest extent
Human error.
In one of the embodiments, the production system also includes the compressed air system electrically connected with control system, institute
Stating compressed air system includes compressed air reservoir and compressed air line, and described compressed air line one end connects compressed air
Storage tank, the other end is respectively communicated with least one in metering air valve, raw material air valve, auxiliary agent air valve, filling air valve.Work as control system
When sending the action command of open and close to metering air valve, raw material air valve, auxiliary agent air valve, filling air valve, filled by compressed air for these
Put and provide execution instruction required power.
In one of the embodiments, the raw material storage tank at least two, and each raw material storage tank and measuring tank
Between pipeline on be equipped with raw material air valve and raw material measuring pump.The need for production, the raw material storage tank of respective numbers is set,
To meet the requirement that plurality of raw materials is stored respectively.
In one of the embodiments, the heating system includes the heating coil set around reactor shell, described
The heat conduction oil-in of heating coil is located at the discharge port end of reactor, and the conduction oil outlet of the heating coil is located at reactor
Feed inlet end；The cooling system includes the cooling coil being arranged between the cylinder inboard wall of reactor and agitator, described cold
But the cooling water inlet of coil pipe is located at the lower end of reactor, and the coolant outlet of the cooling coil is located at the upper end of reactor.
Above-mentioned setting has the advantages that efficient heat transfer is good.
In one of the embodiments, the control system includes being used for parameter, the active station of instruction input, for monitoring
With control metering system, vacuum system, temperature control system and the control station of reactor operation, and the display dress for output data
Put.Above-mentioned setting be beneficial to operating personnel operation and monitoring, with it is simple and easy to do the characteristics of.
The invention also discloses a kind of production method of polyurethane, using above-mentioned production system, comprise the following steps：
Raw material feeding：Metering system is started by control system, raw material air valve and raw material measuring pump is opened, is now calculated as t0
At the moment, raw material is entered measuring tank by raw material air valve and raw material measuring pump, weighed with metering electronic scales, obtaining the t1 moment enters
The weight W of the raw material of measuring tank, and weight W is fed back into control system, counted by control system according in t0~t1 periods
Raw material weight change Δ W calculates the feeding speed of measuring pump in measuring tank, and according to the addition of predetermined raw material, control system is calculated
The feeding speed gone out between subsequent time period t1~t2, and the feeding speed is sent to raw material measuring pump, control adjustment raw material
The rotating speed of measuring pump；When metering electronic scales weigh obtain raw material weight into measuring tank it is consistent with predetermined raw material addition when,
Control system closes raw material air valve and raw material measuring pump；And control system opens metering air valve, lead to the raw material by weighing
Cross charging aperture and enter reactor；
Except aqueous vapor：Vacuum system and temperature control system are controlled with control system, the raw material in reactor is heated and taken out
Vacuum, removes the moisture in raw material, when feed moisture content reaches pre-provisioning request, is opened with control system control cooling system,
The temperature of raw material in reactor is dropped into predetermined temperature；
Auxiliary agent feeding：According to the method for above-mentioned raw materials feeding, metering system is started by control system, auxiliary agent air valve is opened
With auxiliary agent measuring pump, auxiliary agent is set to enter measuring tank by auxiliary agent air valve and auxiliary agent measuring pump, when precise obtains helping with predetermined
When agent addition is consistent, control system closes auxiliary agent air valve and auxiliary agent measuring pump；And control system open metering air valve, make through
Cross the auxiliary agent weighed and reactor is entered by charging aperture；
Reaction：Raw material chemically reacts with auxiliary agent in reactor, produces product.
The production method of above-mentioned polyurethane, using above-mentioned production system, be by metering successively by a variety of polyalcohols first
The accurate charging of system is mixed into reactor, is cooled down after heated, vaccum dewatering, addition catalyst, levelling agent, defoamer,
The auxiliary agents such as chain extender, antioxidant, ultra-violet absorber, are well mixed reaction and obtain finished product, wherein involved technological parameter
Weight, operation temperature, vacuum, the rotating speed of stirring motor, the control of valve including raw material etc., can be entered by control system
Row setting, modification and adjustment, can realize the automation mechanized operation and control of whole production process, and each parameter tracking record is store
Exist in computer, it is to avoid the mistake that human metering occurs so that each batch products quality is homogeneous, and stability is good.
And, it is even more important that by the effect of raw material measuring pump and metering electronic scales, it can be passed through with control system
Constantly regulate measures revolution speed to reach the purpose of accurate measurement, every kind of raw material is flowed into strict accordance with the weight of formula setting
In reactor.It is typically only with the electronic scale of weight measurement mode or only with the metering of cubing mode in routine techniques
Pump controls the inventory of raw material, and conventional method has the obvious disadvantage that, i.e.,：Measuring pump measuring principle is former simply by metering
Expect volume, volume data multiplied by being raw material weight with density, but under different temperatures material density be it is different, therefore, ring
The change of border temperature can cause error in dipping very big；The defect only measured with electronic scale is：Can only human metering, it is impossible to realize from
Dynamic control, error is big, and interference from human factor is very big.The above method uses measuring pump and electronic scale simultaneously, and control system can be real-time
Monitor and change feeding speed, reach the purpose of accurate measurement, while the accuracy being formulated in production process can be fully ensured that
And reliability.
In one of the embodiments, the reactor is additionally provided with sampling observation mouth, during the water removal jia bombardier is rapid, is taken out from sampling observation mouth
Appropriate raw material is taken, its water content is determined.Operating personnel can extract raw material by the sampling observation mouthful and carry out the inspection of semifinished product, and it is qualified to examine
Afterwards, you can carry out the production of subsequent processing.
In one of the embodiments, using above-mentioned production system, after reaction obtains product, in addition to filling step
Suddenly：According to the method for above-mentioned raw materials feeding, metering system is started by control system, filling air valve and filling measurement pump is opened,
The product that reaction is obtained is set to enter finished product packing bucket by filling air valve and filling measurement pump, when precise is obtained and pre- fixed output quota
When product dispensed loading amount is consistent, control system closes filling air valve and filling measurement pump, you can.By auto-filling, make whole production
Filling overall process all realizes automation, on the one hand product can be avoided to be influenceed by external environment, on the other hand can be with
Avoid manually operating the human error that may be brought to greatest extent.
In one of the embodiments, using above-mentioned production system, in the raw material feeding step, a raw material is stored up
Raw material in tank is sent into after reactor according to predetermined addition, repeats the step, the feeding step of next raw material is carried out, to institute
There is raw material to send into reactor according to predetermined addition.
Compared with prior art, the invention has the advantages that：
The present invention a kind of polyurethane production system, using computer control system control metering system, vacuum system,
Temperature control system and reactor, can be such that whole production line is automatically performed by computer, be automatically adjusted according to the factory formula of setting
Various control parameters, are automatically performed production, and each parameter tracking record is stored in computer, it is to avoid what human metering occurred
Mistake so that each batch products quality is homogeneous, and stability is good.And the production of closed full automatic metaplasia is realized, be not only avoid
The mutual pollution of raw material and workshop condition, realizes clean manufacturing, can also avoid the change of environment temperature, humidity to product quality
Influence, further increase the quality of product.
The production system has the advantages that automaticity is high and production efficiency is high, greatly reduces labor intensity, especially
It is adapted to promote the use in the industrial production.
A kind of production method of polyurethane of the present invention, using above-mentioned production system, can make whole production line by counting
Calculation machine is automatically performed, and various control parameters are automatically adjusted according to the factory formula of setting, is automatically performed production, and by each parameter with
Track record is stored in computer, it is to avoid the mistake that human metering occurs so that each batch products quality is homogeneous, and stability is good.
Also, in the production method when carrying out the weighing of raw material and/or auxiliary agent, while using measuring pump and electronic scale,
Control system can in real time monitor and change feeding speed, reach the purpose of accurate measurement, while production process can be fully ensured that
The accuracy and reliability of middle formula.
Brief description of the drawings
Fig. 1 is each equipment connecting relation schematic diagram of production system in the embodiment of the present invention 1.
Wherein：110. raw material storage tank；120. addition agent storage tank；200. reactor；210. charging aperture；220. discharging opening；230.
Vacuum port；310. measuring tank；320. metering electronic scales；330. metering air valves；340. raw material air valves；350. raw material measuring pumps；
360. auxiliary agent air valves；370. auxiliary agent measuring pumps；411. heat conduction oil-ins；412. conduction oil outlet；421. cooling water inlet；422.
Coolant outlet；510. filling measurement pumps；520. filling air valves；530. electronic pouring scales.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
It should be noted that when an element is considered as " connection " another element, it can be communicates directly to separately
One element may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
The arbitrary and all combination of the Listed Items of pass.
Embodiment 1
A kind of production system of polyurethane, as shown in figure 1, including：Storage tank, reactor 200, metering system, vacuum system
System, temperature control system, bulking system, compressed air system and control system,
Storage tank includes raw material storage tank 110 and addition agent storage tank 120.In the present embodiment, the raw material storage tank 110 is 7,
Polyalcohol a, b, c, d, e, f, g are stored respectively.It should be understood that the quantity of raw material storage tank 110 and addition agent storage tank 120, Ke Yigen
The flexible design according to production requirement, it is only necessary to be engaged with corresponding metering system.
Reactor 200 is provided with charging aperture 210, discharging opening 220 and vacuum port 230.The reactor 200 can be wanted according to production
Ask, from popular response kettle, such as there is motor to drive the reactor of agitating paddle.
Metering system includes measuring tank 310, metering electronic scales 320, metering air valve 330, raw material air valve 340, raw material metering
Pump 350, auxiliary agent air valve 360, auxiliary agent measuring pump 370, the metering electronic scales 320 be high-precision electronic scale, for for metering
Tank 310 is weighed, in the present embodiment, and measuring tank 310 is positioned on the metering electronic scales 320；The raw material storage tank 110 and auxiliary agent
Storage tank 120 respectively by pipeline connection measuring tank 310, the measuring tank 310 by the charging aperture 210 of pipeline connection reactor,
The metering air valve 330 is on the pipeline between measuring tank 310 and charging aperture 210, raw material air valve 340 and the raw material metering
Pump 350 is on the pipeline between raw material storage tank 110 and measuring tank 310, and each raw material storage tank 110 and measuring tank 310
Between pipeline on be equipped with raw material air valve 340 and raw material measuring pump 350, the auxiliary agent air valve 360 and auxiliary agent measuring pump 370 are set
On pipeline between addition agent storage tank 120 and measuring tank 310.
The vacuum port 230 that vacuum system passes through pipeline connection reactor.For vacuumizing exclusion aqueous vapor for reactor 200.
Temperature control system includes being used for being the heating system of reactor heating and the cooling system for for reactor cooling.
In the present embodiment, the heating system includes the heating coil set around reactor shell, the conduction oil of the heating coil
Entrance 411 is located at the end of discharging opening 220 of reactor 200, and the conduction oil outlet 412 of the heating coil is located at reactor 200
The end of charging aperture 210；The cooling system includes the cooling coil being arranged between the cylinder inboard wall of reactor and agitator, described
The cooling water inlet 421 of cooling coil is located at the end of discharging opening 220 of reactor 200, the coolant outlet 422 of the cooling coil
Located at the end of charging aperture 210 of reactor 200.It should be understood that the heating system and cooling system of other manner can also be used,
The effect for being reached for reactor heating and freezing only is needed, it is still, excellent with easy-to-use by the way of the present embodiment
Point.
Bulking system includes filling pipeline, filling measurement pump 510, filling air valve 520 and for for packing weighing products
Electronic pouring scale 530, described filling pipeline one end connects the discharging opening 220 of reactor 200, and the other end is obtained for output-response
Product, the filling measurement pump 510 and filling air valve 520 are on the filling pipeline.
Compressed air system includes compressed air reservoir and compressed air line, compressed air line one end connection pressure
Contracting air reservoir, the other end is respectively communicated with least one in metering air valve, raw material air valve, auxiliary agent air valve, filling air valve.Work as control
System processed to metering air valve, raw material air valve, auxiliary agent air valve, filling air valve send the action command of open and close when, be by compressed air
These device execution and power is provided.
Control system and metering system, vacuum system, temperature control system, bulking system, compressed air system and reactor electricity
Connection, for monitoring and controlling metering system, vacuum system, temperature control system, bulking system, compressed air system and reactor
Operation.In the present embodiment, control system includes the active station for input working parameter, for monitoring and controlling metering to be
System, vacuum system, temperature control system and the control station of reactor operation, the control station is namely for control and the engineer safeguarded
Stand, be provided with corresponding configuration platform and hardware, and for gathering and forwarding technological process real time data to monitor in real time
The control device of whole production process；For receiving, changing and show that the technological process transmitted from control device main frame is counted in real time
According to display device.
The production of polyurethane is carried out using the production system of the present embodiment, specific method is as follows：
First, preparation.
(1) common equipment such as debugging recirculating cooling water system, compressed air system, vacuum system, heating system, starts standby
With.And the pressure of compressed air is set to 0.5~0.8MPa, vacuum is set to -0.090-0.1MPa, and hydraulic pressure is set to 0.2MPa.
(2) relevant parameter needed for being set by the input unit of the active station of control system：Such as the heating-up temperature of reactor
Be set to 120 DEG C, speed of agitator be set to 40 revs/min, formulation data (polyalcohol a：200kg, polyalcohol b：100kg, polyalcohol c：
100kg, polyalcohol d：280kg, polyalcohol e：300kg, polyalcohol f：120kg, polyalcohol g：200kg, auxiliary agent：2.2kg), wrap
Fill the data such as specification (200kg/ parts).
2nd, raw material feeding.
(1) metering system is started by control system, opens raw material air valve and raw material measuring pump, be now calculated as the t0 moment,
Making raw material, (polyalcohol a) enters measuring tank by raw material air valve and raw material measuring pump, is weighed with metering electronic scales, obtains the t1 moment
Control system is fed back into the weight W of the raw material of measuring tank, and by weight W, by control system according to t0~t1 periods
Raw material weight change Δ W calculates the feeding speed of measuring pump in interior measuring tank, according to the addition of predetermined raw material, control system
The feeding speed between subsequent time period t1~t2 is calculated, and the feeding speed is sent to raw material measuring pump, control adjustment
The rotating speed of raw material measuring pump.
(2) when metering electronic scales weigh obtain raw material weight into measuring tank it is consistent with predetermined raw material addition when, control
System processed closes raw material air valve and raw material measuring pump.
(3) reactor stirring motor is started, and control system opens metering air valve, makes the raw material by weighing by entering
Material mouth enters reactor.
(4) when metering electronic scales zeroing data, control system closes metering air valve.
(5) the step of control system is according to as above program (1)-(4), automatically by remaining plurality of raw materials (polyalcohol b, c,
D, e, f, g) accurately it is added in reactor.
3rd, except aqueous vapor.
(1) vacuum system and temperature control system are controlled with control system, the raw material in reactor are heated and vacuumized,
Remove the moisture in raw material.
(2) operating personnel can extract raw material by the sampling observation mouthful and carry out the inspection of semifinished product, after the assay was approved, carry out next work
Sequence.
(3) operating personnel are inputted temperature parameter needed for reactor by active station, and control system control cooling system is opened
Open, the temperature of raw material in reactor is dropped into predetermined temperature；Now the cooling water of cooling system enters from cooling water inlet, from cooling
Water out goes out, and then the raw material in reactor is cooled, until material temperature is down to 30 DEG C of design temperature.
4th, auxiliary agent feeding.
(1) according to the method for above-mentioned raw materials feeding, metering system is started by control system, auxiliary agent air valve and auxiliary agent is opened
Measuring pump, makes auxiliary agent enter measuring tank by auxiliary agent air valve and auxiliary agent measuring pump.
(2) when precise obtains the 2.2kg consistent with predetermined promoter addition, control system close auxiliary agent air valve and
Auxiliary agent measuring pump.
(3) control system opens metering air valve, the auxiliary agent by weighing is entered reactor by charging aperture；
5th, react.
Raw material reacts 30min with auxiliary agent in reactor, produces product.
6th, it is filling.
(1) by through examining qualified product according to the method for above-mentioned raw materials feeding, metering system is started by control system,
Filling air valve and filling measurement pump are opened, the product that reaction is obtained is entered finished product packing by filling air valve and filling measurement pump
Bucket, and finished product packing bucket is positioned on electronic pouring scale.
(2) when precise obtains the 200kg consistent with predetermined prod dispensed loading amount, control system close filling air valve and
Filling measurement pump, you can.In this way, product packing in reactor is finished.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of production system of polyurethane, it is characterised in that including：
Storage tank, including raw material storage tank and addition agent storage tank；
Reactor, which is provided with charging aperture, discharging opening and vacuum port；
Metering system, including measuring tank, metering electronic scales, metering air valve, raw material air valve, raw material measuring pump, auxiliary agent air valve, auxiliary agent
Measuring pump, the metering electronic scales are used to weigh for measuring tank, and the raw material storage tank and addition agent storage tank pass through pipeline connection respectively
Measuring tank, the measuring tank by the charging aperture of pipeline connection reactor, the metering air valve located at measuring tank and charging aperture it
Between pipeline on, the raw material air valve and raw material measuring pump are on pipeline between raw material storage tank and measuring tank, the auxiliary agent
Air valve and auxiliary agent measuring pump are on the pipeline between addition agent storage tank and measuring tank；
Vacuum system, passes through the vacuum port of pipeline connection reactor；
Temperature control system, including the heating system for being heated for reactor and the cooling system for cooling for reactor；And
Control system, with metering system, vacuum system, temperature control system and reactor electrical connection, be for monitoring and controlling to measure
System, vacuum system, the operation of temperature control system and reactor；
When raw material is added, the control system starts metering system, opens raw material air valve and raw material measuring pump, is now calculated as t0
Moment, raw material enters measuring tank by raw material air valve and raw material measuring pump, and control system control metering electronic scales are weighed, metering electricity
Sub- scale obtains the t1 moment into the weight W of the raw material of measuring tank, and weight W is fed back into control system, control system according to
Raw material weight change Δ W calculates the feeding speed of measuring pump, and adding according to predetermined raw material in measuring tank in t0~t1 periods
Enter amount, control system calculates the feeding speed between subsequent time period t1~t2, and the feeding speed is sent into raw material meter
Measure pump, the rotating speed of control adjustment raw material measuring pump；Weighed when metering electronic scales and obtain the raw material weight into measuring tank with making a reservation for
When raw material addition is consistent, control system closes raw material air valve and raw material measuring pump；And control system opens metering air valve, makes
Raw material by weighing enters reactor by charging aperture.
2. the production system of polyurethane according to claim 1, it is characterised in that also including being electrically connected with control system
Bulking system, the bulking system include filling pipeline, filling measurement pump, filling air valve and for for dispense weighing products filling
Electronic scale is filled, described filling pipeline one end connects the discharging opening of reactor, and the other end is used to export obtained product, described filling
Measuring pump and filling air valve are on filling pipeline.
3. the production system of polyurethane according to claim 2, it is characterised in that also including being electrically connected with control system
Compressed air system, the compressed air system includes compressed air reservoir and compressed air line, the compressed air line
One end connects compressed air reservoir, and the other end is respectively communicated with metering air valve, raw material air valve, auxiliary agent air valve, filling air valve extremely
It is few one.
4. the production system of polyurethane according to claim 1, it is characterised in that the raw material storage tank at least two,
And raw material air valve and raw material measuring pump are equipped with the pipeline between each raw material storage tank and measuring tank.
5. the production system of polyurethane according to claim 1, it is characterised in that the heating system is included around reaction
The heating coil that kettle shell is set, the heat conduction oil-in of the heating coil is located at the discharge port end of reactor, the heating dish
The conduction oil outlet of pipe is located at the feed inlet end of reactor；The cooling system includes the cylinder inboard wall for being arranged on reactor with stirring
The cooling coil between device is mixed, the cooling water inlet of the cooling coil is located at the discharge port end of reactor, the cooling coil
Coolant outlet be located at reactor feed inlet end.
6. the production system of polyurethane according to claim 1, it is characterised in that the control system includes being used to join
Number, the active station of instruction input, for monitoring and controlling metering system, vacuum system, temperature control system and the control of reactor operation
System station, and the display device for output data.
7. a kind of production method of polyurethane, it is characterised in that using the production system described in claim any one of 1-6, bag
Include following steps：
Raw material feeding：Metering system is started by control system, raw material air valve and raw material measuring pump are opened, when being now calculated as t0
Carve, raw material is entered measuring tank by raw material air valve and raw material measuring pump, weighed with metering electronic scales, obtain the t1 moment into meter
The weight W of the raw material of measuring tank, and weight W is fed back into control system, measured by control system according in t0~t1 periods
Raw material weight change Δ W calculates the feeding speed of measuring pump in tank, and according to the addition of predetermined raw material, control system is calculated
Feeding speed between subsequent time period t1~t2, and the feeding speed is sent to raw material measuring pump, control adjustment raw material meter
Measure the rotating speed of pump；When metering electronic scales weigh obtain raw material weight into measuring tank it is consistent with predetermined raw material addition when, control
System processed closes raw material air valve and raw material measuring pump；And control system opens metering air valve, makes to pass through by the raw material of weighing
Charging aperture enters reactor；
Except aqueous vapor：Vacuum system and temperature control system are controlled with control system, the raw material in reactor is heated and vacuumized,
The moisture in raw material is removed, when feed moisture content reaches pre-provisioning request, is opened, will reacted with control system control cooling system
The temperature of raw material drops to predetermined temperature in kettle；
Auxiliary agent feeding：According to the method for above-mentioned raw materials feeding, metering system is started by control system, auxiliary agent air valve is opened and helps
Agent measuring pump, makes auxiliary agent enter measuring tank by auxiliary agent air valve and auxiliary agent measuring pump, when precise obtains adding with predetermined auxiliary agent
Enter amount it is consistent when, control system closes auxiliary agent air valve and auxiliary agent measuring pump；And control system opens metering air valve, makes by claiming
The auxiliary agent of amount enters reactor by charging aperture；
Reaction：Raw material chemically reacts with auxiliary agent in reactor, produces product.
8. the production method of polyurethane according to claim 7, it is characterised in that the reactor is additionally provided with sampling observation mouth,
During the water removal jia bombardier is rapid, appropriate raw material is extracted from sampling observation mouth, its water content is determined.
9. the production method of polyurethane according to claim 7, it is characterised in that using the production described in claim 2
System, after reaction obtains product, in addition to filling step：According to the method for above-mentioned raw materials feeding, started by control system
Metering system, opens filling air valve and filling measurement pump, the product that reaction is obtained is entered by filling air valve and filling measurement pump
Enter finished product packing bucket, when precise obtains consistent with predetermined prod dispensed loading amount, control system closes filling air valve and filling
Measuring pump, you can.
10. the production method of the polyurethane according to claim any one of 7-9, it is characterised in that using claim 4 institute
In the production system stated, the raw material feeding step, the raw material in a raw material storage tank is sent into according to predetermined addition and reacted
After kettle, the step is repeated, the feeding step of next raw material is carried out, sends into and reacts according to predetermined addition to all raw materials
Kettle.
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| CN106540611A (en) * | 2016-11-28 | 2017-03-29 | 山东国元新材料有限公司 | Foam dust suppression agent automated production equipment and production method |
| CN110709161A (en) * | 2017-03-29 | 2020-01-17 | 东丽工程株式会社 | Synthesizer and metering mechanism |
| CN108201866A (en) * | 2018-01-31 | 2018-06-26 | 河北信诚化工装备有限公司 | A kind of production system of polyurethane water-proof paint |
| CN108499490A (en) * | 2018-04-10 | 2018-09-07 | 广东金宝力化工科技装备股份有限公司 | A kind of polyurethane coating production line |
| CN108940165A (en) * | 2018-07-20 | 2018-12-07 | 江西安德力高新科技有限公司 | A kind of acrylic acid production system |
| CN108892685B (en) * | 2018-08-17 | 2019-07-30 | 山东海众化工科技有限公司 | Chemical producing system |
| CN109160989B (en) * | 2018-08-23 | 2021-04-02 | 周朝功 | Production system and production process of thermoplastic polyurethane |
| CN109529739A (en) * | 2019-01-09 | 2019-03-29 | 江南大学 | A kind of automated dispensing system for new drug development |
| CN110003431B (en) * | 2019-04-16 | 2021-07-20 | 浙江新诺高分子材料有限公司 | Preparation method of dispersion emulsion of high-alkali-resistance aqueous polyurethane |
| CN110540624A (en) * | 2019-07-18 | 2019-12-06 | 中山市马里奥机械科技有限公司 | Full-automatic production line and production process of polyurethane adhesive |
| CN114797718B (en) * | 2022-03-04 | 2023-11-17 | 宿州市格润来福医药有限公司 | Liquid dressing production equipment |
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| CN201148408Y (en) * | 2007-12-21 | 2008-11-12 | 山东圣光化工集团有限公司 | Multi-kettle continuous production apparatus for waterborne polyurethane polymerization reaction |
| CN201949869U (en) * | 2011-01-25 | 2011-08-31 | 温州市登达化工有限公司 | Automatic nitrogen control device in synthetic reaction of polyurethane |
| US20120232180A1 (en) * | 2011-03-08 | 2012-09-13 | Basf Se | Process for the production of polyurethane rigid foams |
| CN103214823A (en) * | 2013-04-17 | 2013-07-24 | 北京东方雨虹防水技术股份有限公司 | Polyurethane grouting material and preparation method thereof |
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Denomination of invention: Polyurethane production system and polyurethane production method Effective date of registration: 20180713 Granted publication date: 20171024 Pledgee: Bank of China Limited by Share Ltd Foshan branch Pledgor: FOSHAN UNITE HIGH-TECH MATERIALS CO., LTD. Registration number: 2018440000203 |
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