CN104014293B - For the automatic production method of Styrene-Acrylate Emulsion Polymerization - Google Patents
For the automatic production method of Styrene-Acrylate Emulsion Polymerization Download PDFInfo
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- CN104014293B CN104014293B CN201410122441.9A CN201410122441A CN104014293B CN 104014293 B CN104014293 B CN 104014293B CN 201410122441 A CN201410122441 A CN 201410122441A CN 104014293 B CN104014293 B CN 104014293B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a kind of automatic production device for Styrene-Acrylate Emulsion Polymerization and automation control method thereof.Process units comprises PLC control system, polymerization reaction kettle and acrylate, styrene and initator head tank; Weight sensor is all established to be connected with PLC bottom head tank; Acrylate, styrene and initiator feed Guan Shangjun establish control valve to be connected with PLC; Polymerization reaction kettle establishes temperature sensor to be connected with PLC; Heating steam and cooling water pipe all establish control valve to be connected with PLC.Control method: automatically adjusted by PLC and control acrylate, styrene and initiator feed control valve and heating steam and cooling water control valve, to control acrylate, styrene, the feeding quantity of initiator solution and charging rate, and the temperature of polymerization reaction kettle.The present invention utilizes PLC to regulate the feeding quantity of material and the flow of charging rate and heating steam and cooling water by the change of reaction temperature, polymeric reaction temperature is stablized, ensure that safety in production and product quality.
Description
Technical field
The invention belongs to chemical production technical field, relate to a kind of automatic production method for Styrene-Acrylate Emulsion Polymerization.
Background technology
So-called benzene emulsion refers to that styrene and acrylamide and esters of acrylic acid carry out a class chemicals of emulsion polymerisation, is widely used in the pigment dyeing of dyeing and adhesive, the paint adhesive of building trade, the adhesive etc. of timber processing of stamp.
Because the polymerisation of benzene emulsion is carried out in emulsion, each reaction monomers carries out polymerisation under the effect of initator, starting stage absorbs heat to react, later along with the carrying out of reaction releases heat, if control improper will generation cruelly to gather, light then cause reaction mass to lose, heavy then production accident can be caused to work the mischief.Therefore carry out Automated condtrol to this course of reaction, to improving the quality of products, preventing, security incident from being very important.
In prior art for Styrene-Acrylate Emulsion Polymerization production method be all by controlling manually, instrument auxiliary operation, because manual operation destabilizing factor is more, especially in the links such as material metering and charging rate, reaction temperature, reaction pressure, the control in reaction time, man-induced fluctuations factor is larger, it is all inadequate that products obtained therefrom is mainly manifested in outward appearance, bonding intensity and stability aspect, thus comparatively large to the quality influence of product, become the current problem demanding prompt solution of dealer of association area.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of safe, efficient automatic production method for Styrene-Acrylate Emulsion Polymerization is provided.
Technical scheme of the present invention is as follows:
For an automatic production device for Styrene-Acrylate Emulsion Polymerization, acrylate head tank, styrene head tank and initator head tank that it is comprised PLC control system, polymerization reaction kettle and is connected with polymerization reaction kettle respectively by pipeline; Polymerization reaction kettle chuck is provided with heating steam pipe or cooling water pipe; Be equipped with weight sensor bottom acrylate head tank, styrene head tank and initator head tank, this weight sensor is all connected with the input port of PLC control system; The pipeline (i.e. acrylate feed pipe, styrene charge pipe, initiator feed pipe) that acrylate head tank, styrene head tank are connected with polymerization reaction kettle respectively with initator head tank is equipped with control valve, and these control valves are all connected with the output port of PLC control system; Polymerization reaction kettle is provided with temperature sensor, and this temperature sensor is connected with the input port of PLC control system; Heating steam tube inlet and cooling water pipe entrance are equipped with control valve, and this control valve is all connected with the output port of PLC control system.
Further, described weight sensor is one with the electronic scale of transmitter.
Further, described automatic production device also comprises the steam generator be connected with heating steam tube inlet, and the bosh be connected with cooling water pipe entrance.
An automatic production method for Styrene-Acrylate Emulsion Polymerization, adopts the above-mentioned automatic production device for Styrene-Acrylate Emulsion Polymerization to carry out automated production; The automation control method of the above-mentioned automatic production device for Styrene-Acrylate Emulsion Polymerization is as follows: carry out data acquisition and control by a programmable logic control device PLC control system to the production of Styrene-Acrylate Emulsion Polymerization and operate, wherein:
Weight sensor bottom acrylate head tank, styrene head tank, initator head tank, for monitoring the weight of corresponding elevated dosing vessel, and the weight data of acrylate, styrene, initiator solution is sent to PLC control system, via PLC control system, controling parameters is adjusted automatically again, and the control valve controlled on acrylate feed pipe, styrene charge pipe, initiator feed pipe, to control acrylate, styrene, the feeding quantity of initiator solution and charging rate, make it by demand feeding to polymerization reaction kettle;
Temperature sensor is for monitoring the temperature in polymerization reaction kettle, and send temperature data to PLC control system, via PLC control system, controling parameters is adjusted automatically again, and control the control valve of heating steam and cooling water pipe entrance respectively, make temperature stabilization in polymerization reaction kettle to regulate the flow of heating steam and cooling water.
The main points of Automated condtrol are:
1, Weighing module is adopted to carry out measure control to initator head tank, styrene head tank, acrylate head tank.
2, the heating steam of reacting kettle jacketing and cooling water by-pass valve control are automatically adjusted, when temperature is lower than technique initialization temperature, to open and steam regulation valve heats; When temperature reach or higher than technique initialization temperature time, steam off valve, opens cooling water valve gate control reaction temperature in required scope.In a word, cooling water flow and charging rate to be regulated according to variations in temperature.
Beneficial effect of the present invention:
Automatic production device for Styrene-Acrylate Emulsion Polymerization of the present invention and automation control method thereof, mainly by a programmable logic control device PLC control system, data acquisition and control operation is carried out to the polymerisation production for Styrene-Acrylate Emulsion Polymerization, this polymerisation is carried out under stable temperature and pressure, both ensure that reacting completely of raw material in turn ensure that safety in production and product quality, solve in existing production technology in material metering and charging rate simultaneously, reaction temperature, reaction pressure, in the links such as the control in reaction time, man-induced fluctuations factor is larger, and the products obtained therefrom caused is mainly manifested in bond properties and stability aspect is all inadequate, thus larger to the quality influence of product, namely various shortcoming of the prior art is effectively overcome, therefore its application prospect is very wide.
The present invention has carried out PLC to the polymerisation of benzene emulsion and has automatically controlled, the charging rate of acrylate monomer and styrene and initator and the flow of cooling water is regulated by the change of reaction temperature, make reaction temperature be stabilized in the scope of process stipulation, ensure that safety in production and product quality.
Accompanying drawing explanation
Fig. 1 is the organigram of a kind of automatic production device for Styrene-Acrylate Emulsion Polymerization in the present invention.
In figure: 1, polymerization reaction kettle 2, weight sensor 3, weight sensor 4, weight sensor 5, control valve 6, control valve 7, control valve 8, temperature sensor 9, control valve 10, control valve
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment 1
As shown in Figure 1, a kind of automatic production device for Styrene-Acrylate Emulsion Polymerization of the present invention, acrylate head tank, styrene head tank and initator head tank that it is comprised PLC control system (figure does not draw), polymerization reaction kettle 1 and is connected with polymerization reaction kettle respectively by pipeline; Polymerization reaction kettle chuck is provided with heating steam pipe or cooling water pipe; Be equipped with weight sensor 2,3,4 bottom acrylate head tank, styrene head tank and initator head tank, this weight sensor is all connected with the input port of PLC control system; The pipeline that acrylate head tank, styrene head tank and initator head tank are connected with polymerization reaction kettle is respectively equipped with control valve 5,6,7, and these control valves are all connected with the output port of PLC control system; Polymerization reaction kettle is provided with temperature sensor 8, and this temperature sensor is connected with the input port of PLC control system; Heating steam tube inlet is provided with control valve 9, and cooling water pipe entrance is provided with control valve 10, and this control valve is all connected with the output port of PLC control system.
Embodiment 2
For the automatic production method of the automatic production device of Styrene-Acrylate Emulsion Polymerization described in embodiment 1, concrete operation step is as follows:
(1) in initator head tank, adding initator and water, to be made into initiator solution for subsequent use;
(2) the styrene material, adding metering in styrene head tank is for subsequent use;
(3), suck through the acrylate needed for metering in esters of acrylic acid head tank, for subsequent use; (notice that the raw material of the adhesive of the different trade mark and inventory are different, must operate according to formula for a product)
(4), in clean enamel polymerization reaction kettle, add quantitative deionized water, open and stir, add emulsifying agent, add acrylamide; Open automatic control device; Add the acrylate monomer (weight) of 1/3 amount and the styrene (weight) of 1/3 amount by the automatic control of 2 raw material head tanks respectively, stir 15 minutes; Open heating steam to be slowly warming up to 75 DEG C (heating-up time is about 50-60min), automatic control adds the initiator solution (weight) of 1/3 amount, now temperature rises very fast, closes heating steam Self controlling valve, automatically regulates cooling water valve gate control reaction temperature to be no more than 102 DEG C; When temperature stabilization is at 92 ± 6 DEG C, slowly drip the initiator solution of the remaining acrylate monomer of 2/3 amount, the styrene of 2/3 amount and 2/3 amount equably, feed time controls at 50-60min simultaneously; Finish at 80-90 DEG C of insulation 1-1.5 hour, add termination agent, be then cooled to 40-45 DEG C.
The polymerisation of above-mentioned benzene emulsion is macromolecular polymerization reaction, and charging rate can not be too fast, and temperature can not be too low, otherwise initial action is incomplete, and sudden and violent poly-after causing, heat is removed not in time, also can cause the danger of punching material.Initator can not add excessive or too fast, otherwise causes sudden and violent poly-, and heat is removed not in time, causes and rushes material danger, and molecular weight increases generation waste product simultaneously.Therefore, the polymerisation of PLC control system to benzene emulsion is adopted automatically to control, the charging rate of acrylate monomer and styrene and initator and the flow of cooling water is regulated by the change of reaction temperature, make reaction temperature be stabilized in the scope of process stipulation, ensure that safety in production and product quality.
The automation control method of the above-mentioned automatic production device for Styrene-Acrylate Emulsion Polymerization is as follows:
The weight data of acrylate, styrene, initiator solution is sent to PLC control system by the weight sensor bottom acrylate head tank, styrene head tank, initator head tank, automatically the control valve controlled on acrylate feed pipe, styrene charge pipe, initiator feed pipe is adjusted again, to control acrylate, styrene, the feeding quantity of initiator solution and charging rate via PLC control system;
The temperature data of polymerization reaction kettle is sent to PLC control system by temperature sensor, automatically adjust via PLC control system again and control the heating steam tube inlet of reacting kettle jacketing and the control valve of cooling water pipe entrance, when temperature is lower than technique initialization temperature, opens also steam regulation valve and heat; When temperature reach or higher than technique initialization temperature time, steam off valve, opens cooling water valve gate control reaction temperature in required scope.In a word, the charging rate of heating steam or cooling water flow and acrylate, styrene, initiator solution is regulated according to variations in temperature.
In aforementioned production method step (4), automatically the control valve controlled on acrylate feed pipe, styrene charge pipe, initiator feed pipe is adjusted respectively via PLC control system, to control acrylate, styrene, the feeding quantity of initiator solution and charging rate, first add 1/3 amount above, after add remaining 2/3 amount (feed time controls at 50-60min) again; Automatically adjust the control valve controlling heating steam tube inlet via PLC control system, before adding initator, be slowly warming up to 75 DEG C at the beginning with the temperature controlled in reactor; Automatically the control valve of controlled cooling model pipe inlet is adjusted via PLC control system, after adding the initator of 1/3 amount with control, reaction temperature is no more than 102 DEG C, then be stabilized in 92 ± 6 DEG C, after all adding material, be incubated 1-1.5 hour at 80-90 DEG C, add after stopping agent and be cooled to 40-45 DEG C.
Claims (4)
1. an automatic production method for Styrene-Acrylate Emulsion Polymerization, is characterized in that,
The automatic production device being used for Styrene-Acrylate Emulsion Polymerization is adopted to carry out automated production;
The described automatic production device for Styrene-Acrylate Emulsion Polymerization, acrylate head tank, styrene head tank and initator head tank that it is comprised PLC control system, polymerization reaction kettle and is connected with polymerization reaction kettle respectively by pipeline; Polymerization reaction kettle chuck is provided with heating steam pipe or cooling water pipe; Be equipped with weight sensor bottom acrylate head tank, styrene head tank and initator head tank, this weight sensor is all connected with the input port of PLC control system; The pipeline that acrylate head tank, styrene head tank and initator head tank are connected with polymerization reaction kettle is respectively equipped with control valve, and these control valves are all connected with the output port of PLC control system; Polymerization reaction kettle is provided with temperature sensor, and this temperature sensor is connected with the input port of PLC control system; Heating steam tube inlet and cooling water pipe entrance are equipped with control valve, and this control valve is all connected with the output port of PLC control system;
The automatic production method of described Styrene-Acrylate Emulsion Polymerization, carries out as follows:
(1) in initator head tank, adding initator and water, to be made into initiator solution for subsequent use;
(2) the styrene material, adding metering in styrene head tank is for subsequent use;
(3), suck in esters of acrylic acid head tank through metering needed for acrylate for subsequent use;
(4), in clean polymerization reaction kettle, add quantitative deionized water, open and stir, add emulsifying agent, add acrylamide; Open automatic control device; Add the acrylate monomer of 1/3 weight and the styrene of 1/3 weight by the automatic control of 2 raw material head tanks respectively, stir 15 minutes; Open heating steam and be slowly warming up to 75 DEG C, heating-up time 50-60min, automatic control adds the initiator solution of 1/3 weight, and now temperature rises very fast, closes heating steam Self controlling valve, automatically regulates cooling water valve gate control reaction temperature to be no more than 102 DEG C; When temperature stabilization is at 92 ± 6 DEG C, slowly drip the initiator solution of the remaining acrylate monomer of 2/3 amount, the styrene of 2/3 amount and 2/3 amount equably, feed time controls at 50-60min simultaneously; Finish at 80-90 DEG C of insulation 1-1.5 hour, add termination agent, be then cooled to 40-45 DEG C;
In above-mentioned steps (4), automatically the control valve controlled on acrylate feed pipe, styrene charge pipe, initiator feed pipe is adjusted respectively via PLC control system, to control acrylate, styrene, the feeding quantity of initiator solution and charging rate, first add 1/3 amount above, add 2/3 remaining amount below again, feed time controls at 50-60min; Automatically adjust the control valve controlling heating steam tube inlet via PLC control system, before adding initator, be slowly warming up to 75 DEG C at the beginning with the temperature controlled in reactor; Automatically the control valve of controlled cooling model pipe inlet is adjusted via PLC control system, after adding the initator of 1/3 amount with control, reaction temperature is no more than 102 DEG C, then be stabilized in 92 ± 6 DEG C, after all adding material, be incubated 1-1.5 hour at 80-90 DEG C, add after stopping agent and be cooled to 40-45 DEG C.
2. the automatic production method of Styrene-Acrylate Emulsion Polymerization as claimed in claim 1, is characterized in that, described weight sensor is one with the electronic scale of transmitter.
3. the automatic production method of Styrene-Acrylate Emulsion Polymerization as claimed in claim 1 or 2, it is characterized in that, described polymerization reaction kettle is glassed steel reaction vessels.
4. the automatic production method of Styrene-Acrylate Emulsion Polymerization as claimed in claim 1 or 2, it is characterized in that, the described automatic production device for Styrene-Acrylate Emulsion Polymerization also comprises the steam generator be connected with heating steam tube inlet, and the bosh be connected with cooling water pipe entrance.
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| KR100783295B1 (en) * | 2006-04-10 | 2007-12-10 | 주식회사 엘지화학 | Method for Optimization of Process by Adjustment of Initiator in Polymerization System |
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| CN2622181Y (en) * | 2003-05-27 | 2004-06-30 | 东营市圣光高分子化工有限责任公司 | Full sealing and automatic equipment for emulsion polymerization |
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Effective date of registration: 20220707 Address after: 448000 Jingmen high tech Zone, Jingmen City, Hubei Province No. 6, sunshine 1st Road, Duodao District Patentee after: Hubei Shangzhu Chemical Co.,Ltd. Address before: 201419 No. 9500 Puxing Road, Fengxian District, Shanghai Patentee before: SHANGHAI TIANTAN AUXILIARIES Co.,Ltd. |