CN101876822B - Automatic control method for polyethenoxy ether production equipment - Google Patents
Automatic control method for polyethenoxy ether production equipment Download PDFInfo
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- CN101876822B CN101876822B CN2009100504163A CN200910050416A CN101876822B CN 101876822 B CN101876822 B CN 101876822B CN 2009100504163 A CN2009100504163 A CN 2009100504163A CN 200910050416 A CN200910050416 A CN 200910050416A CN 101876822 B CN101876822 B CN 101876822B
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention provides an automatic control method for polyethenoxy ether production equipment. Data acquisition and control operations are carried out on the production equipment through a DCS (Distributed Control System) with a PID (Proportion Integration Differentiation) controller, and an adjusting valve on a guide tube is controlled by the automatic adjustment of the parameters of the PID controller, so that the pressure and the temperature in a reactor are stable, the problems of too many labile factors and great effect on product quality caused by the condition that the production equipment in the traditional production technology needs manual control are solved further, and the safety in the production process is ensured.
Description
Technical field
The present invention relates to a kind of non-ionic surfactant production technology, particularly relate to a kind of automation control method of polyethenoxy ether production equipment.
Background technology
Polyoxyethylene ether is an important class in the non-ionic surfactant; Because it has good emulsifying property, soil release characteristics and water-soluble; Can be used for doing bleeding agent, washing agent, solubilizer, spreading agent, antistatic agent, emulsifying agent etc.; Be widely used in industry cleaning and the emulsification dispersion, said polyoxyethylene ether also can be used as levelling agent in printing and dyeing industry.
In existing technology; The production technology of said polyoxyethylene ether is mainly passed through following steps; Be processes such as the getting the raw materials ready of reactor nitrogen replacement, the vacuum dehydration of still material, raw materials for production, reactor intensification, circular response, neutralization cooling and blowing, in traditional production line, the device of producing said polyoxyethylene ether mainly comprises polyether reactant device, rolled plate heat interchanger, oxirane basin; The outer circulation pump, and vacuum pump etc.Yet; In the process of the said polyoxyethylene ether of actual production, above-described production process and the process units that is used for this technological process all are to adopt control manually, because the manually-operated labile factor is more; Especially it is excessive on links such as material metering, charging rate, temperature of reaction, reaction pressure, reaction time, to receive the human factor fluctuation easily; Thereby bigger to the quality influence of products obtained therefrom, moreover used primary raw material oxirane is inflammable and explosive dangerous material; In the process of producing, safety in production also there is bigger influence.
So; How to design a kind of working method of said polyoxyethylene ether, not only can guarantee the quality of product, also can ensure the safety of production run simultaneously; To avoid above-described various shortcoming, become the problem that the dealer of association area needs to be resolved hurrily at present.
Summary of the invention
The shortcoming of prior art in view of the above; The object of the present invention is to provide a kind of automation control method of polyethenoxy ether production equipment; Control the more and bigger problem of labile factor that causes in the existing production technology manually to solve, and can ensure the safety of production run the quality influence of product.
For realizing above-mentioned purpose and other relevant purposes; The present invention provides a kind of automation control method of polyethenoxy ether production equipment; By one have the PID controller the DCS control system said process units is carried out data acquisition and control operation; Wherein, Said process units comprise discharge pump, raw material measuring tank, reactor, conduit at least, be located at said supravasal controlling valve, heat interchanger and be located at said reactor and said heat interchanger between supravasal ebullator; It is characterized in that: (1) applying electronic weighing sensor detects the weight of said raw material measuring tank, controls the switching of said supravasal controlling valve and discharge pump via the automatic adjustment of said PID controller parameter, with by demand pump in stock to said raw material measuring tank; (2) pressure of applying pressure transmitters sense reactor; Control said supravasal controlling valve via the automatic adjustment of said PID controller parameter and reach little inertia action, make said reactor pressure stable with the severity of controlling chemical heat release in the said reactor; And (3) application of temperature transmitters sense reactor temperature, control said supravasal controlling valve respectively via the automatic adjustment of said PID controller parameter, make said reactor temperature stable with the flow of regulating and control chilled water.
In the automation control method of polyethenoxy ether production equipment of the present invention, said raw material measuring tank is provided with electronic scales molality piece.In concrete embodiment, the raw material that said raw material measuring tank is stored is an oxirane.
In the automation control method of polyethenoxy ether production equipment of the present invention, said reactor is two, i.e. first reactor and second reactor; Corresponding said two said first reactors and second reactor, said heat exchanger is two, i.e. first heat exchanger and second heat exchanger; Corresponding said first heat exchanger and second heat exchanger, said heat exchanger is the rolled plate heat exchanger.Said ebullator is two, i.e. first ebullator and second ebullator.So,, promptly constitute the partial circulating reactive system, open more after a little while at the material of participating in reaction by said first reactor, first ebullator and first heat interchanger to form the binary cycle system of size; Constitute the systemic circulation reactive system by said second reactor, second ebullator and second heat interchanger, open more for a long time at the material of participating in reaction.
As stated; The automation control method of polyethenoxy ether production equipment of the present invention mainly by one have the PID controller the DCS control system said process units is carried out data acquisition and control operation; To solve the more and bigger problem of labile factor that control manually causes in the existing production technology to the quality influence of product; And can ensure and the safety of production run promptly effectively overcome various shortcoming of the prior art.
Description of drawings
Fig. 1 is shown as the framework synoptic diagram of polyethenoxy ether production equipment among the present invention.
Fig. 2 demonstration is applied to the principle of work synoptic diagram into PID controller among the present invention.
Fig. 3 is shown as the robotization control principle of adjustment and control synoptic diagram of reinforced program among the present invention.
Fig. 4 is shown as the robotization control principle of adjustment and control synoptic diagram of reactor pressure among the present invention.
Fig. 5 is shown as the robotization control principle of adjustment and control synoptic diagram of temperature of reactor among the present invention.
The simple declaration of element numbers:
10 discharge pumps
11 raw material measuring tanks
12 conduits
13 controlling valves
14 first reactors
15 second reactors
16 first heat interchanger
17 first ebullators
18 second heat interchanger
19 second ebullators
Embodiment
Below through specific instantiation embodiment of the present invention is described, those skilled in the art can understand other advantages of the present invention and effect easily by the content that this instructions disclosed.The present invention can also implement or use through other different embodiment, and each item details in this instructions also can be based on different viewpoints and application, carries out various modifications or change under the spirit of the present invention not deviating from.
See also Fig. 1, Fig. 1 is shown as the framework synoptic diagram of polyethenoxy ether production equipment of the present invention.As shown in the figure; The present invention provides a kind of automation control method of polyethenoxy ether production equipment; By one have the PID controller the DCS control system said process units is carried out data acquisition and control operation; Wherein, said process units comprise discharge pump 10, raw material measuring tank 11, reactor 14 and 15, conduit 12 at least, be located at controlling valve 13 on the said conduit 12, heat interchanger 16 and 18 and be located at said reactor 14 and 15 and said heat interchanger 16 and 18 between supravasal ebullator 17 and 19.
In this embodiment, said reactor 14 and 15 is two, i.e. first reactor 14 and second reactor 15; Corresponding said two said first reactors 14 and second reactor 15, said rolled plate heat interchanger 16 and 18 is two, i.e. first heat interchanger 16 and second heat interchanger 18; Corresponding said first heat interchanger 16 and second heat interchanger 18, said ebullator 17 and 19 is two, i.e. first ebullator 17 and second ebullator 19.So,, promptly constitute the partial circulating reactive system, open more after a little while at the material of participating in reaction by said first reactor 14, first ebullator 17 and first heat interchanger 16 to form the binary cycle system of size; Constitute the systemic circulation reactive system by said second reactor 15, second ebullator 19 and second heat interchanger 18, open more for a long time at the material of participating in reaction.In this embodiment, be that example describes with the partial circulating reactive system temporarily.
See also Fig. 2, Fig. 2 demonstration is applied to the principle of work synoptic diagram into PID controller among the present invention, and is as shown in the figure; Said DCS control system also has a PID controller, is used for above-described process units is controlled, and said PID controller principle of work is as shown in Figure 3; Be that pid parameter adjusts be after circuit controls drops into; Earlier with one group of initial pid parameter (P: scale-up factor, I: integral coefficient, D: differential coefficient) control; The critical parameters that the functional operation module of said PID controller (among the figure not label) obtains calculate and are suitable for proportional band (P), integration (I), the differential controlled variable such as (d) that stability margin requires; Via adjusting coefficient from tuning PID study; Obtain P, I, D parameter and the actual measurement operating condition adjustment coefficient of the minimum stability margin of input, moderate stability margin, maximum stable nargin; Adjustment P, I, D parameter are so that said controlled device obtains desirable sound attitude control.
See also Fig. 3; Fig. 3 is shown as the robotization control principle of adjustment and control synoptic diagram of reinforced program among the present invention, and as shown in the figure, the applying electronic weighing sensor detects the weight of said raw material measuring tank 11; Control controlling valve 13 and the switching of discharge pump 10 on the said conduit 12 via the automatic adjustment of said PID controller parameter; With by the demand pump in stock to said raw material measuring tank 11, in this embodiment, said raw material measuring tank 11 is provided with electronic scales molality piece (among the figure not label).Wherein, the raw material of said raw material measuring tank 11 storages is an oxirane.Particularly; Said raw material oxirane is pumped to six the raw material measuring tanks 11 in workshop from the groove tank field; Six raw material measuring tanks 11 share two discharge pumps 10 (promptly one of a use is subsequent use); Add that this device has the control of the former material conveying pump 10 of characteristics of batch production to be connected, in working control, control employing order and interlocking coupling like this; Six raw material measuring tanks in workshop 11 adopt electronic scales molality piece, and it is subsequent use that the oxirane of setting weight can pump into each raw material measuring tank 11 of workshop as required automatically.
See also Fig. 4; Fig. 4 is shown as the robotization control principle of adjustment and control synoptic diagram of reactor pressure among the present invention; As shown in the figure; The pressure of applying pressure transmitters sense reactor 14, the controlling valve of controlling on the conduit 12 on said first reactor 14 via the automatic adjustment of said PID controller parameter 13 reaches little inertia action, makes said reactor 14 internal pressures stable with the severity of controlling chemical heat release in the said reactor 14; In this embodiment, said reactor 14 internal pressures are divided into several sections, adjust with different pid parameters respectively; Can see; The time constant of said reactor 14 pressure in the process of boosting is very little, thereby we are divided into three phases to the process of boosting: a, periods of low pressure, and (pressure＜p1) pressure of said reactor 14 rises very fast at this moment; Object is very sensitive to regulating and controlling effect, at this moment can with the regulating and controlling effect of the controlling valve on the feed conduit 12 13 establish a little less than.B, middle pressure stage, (pressure is between p1 and p2) at this moment, this moment, the characteristic of said reactor 14 was more stable, and robustness is stronger, can make the controlling valve 13 on the feed conduit 12 keep stronger control action relatively.C, high pressure phase (pressure is greater than p2) at this moment, the robustness of object is very strong, and is very insensitive to regulating and controlling effect, need integral action be excised, and avoids overshoot as far as possible.
See also Fig. 5; Fig. 5 is shown as the robotization control principle of adjustment and control synoptic diagram of temperature of reactor among the present invention; As shown in the figure; Temperature in the application of temperature transmitters sense agitated reactor 14 is controlled the controlling valve 13 on the conduit 12 on said first heat interchanger 16 respectively via the automatic adjustment of said PID controller parameter, makes temperature stabilizations in the said reactor 14 with the flow of regulating and control chilled water; In this embodiment; Because the exothermic heat of reaction amount is bigger; Adopted plate turning type heat interchanger 16 (advantage is that the little heat interchanging area of volume is big) on the equipment, the temperature of said reactor 14 mainly relies on the cooling water flow of regulation and control plate turning type heat interchanger 16 to reach the purpose of temperature control, because the severity of exothermic heat of reaction has been stablized in the automatic control of said reactor 14 internal pressures; Controlled the source, so the PID of plate turning type heat interchanger 16 regulation and control still are more convenient stable.
What need special instruction is; Constitute the systemic circulation reactive system by said second reactor 15, second ebullator 19 and second heat interchanger 18 and utilize the self-adjusting operation of said PID controller parameter identical in process of production, give unnecessary details no longer in detail at this with said partial circulating reactive system.
In sum, the automation control method of polyethenoxy ether production equipment of the present invention mainly by one have the PID controller the DCS control system said process units is carried out data acquisition and control operation, to solve the more and bigger problem of labile factor that control manually causes in the existing production technology to the quality influence of product; And can ensure the safety of production run, and also saved the reaction time simultaneously, avoided maloperation; Moreover, since accurate measurement, stable temperature control; Can be according to instruction auto-control proportioning; Guarantee constant product quality and safety in production, the product the key technical indexes all reaches and is superior to product standard, and overall economic efficiency is better; Reach the set goal, promptly effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
The foregoing description is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.Any have the knack of this technological personage all can be under spirit of the present invention and category, the foregoing description is modified or is changed.Therefore, have common knowledge the knowledgeable in the affiliated such as technical field, must contain by claim of the present invention not breaking away from all equivalence modifications of being accomplished under disclosed spirit and the technological thought or changing.
Claims (8)
1. the automation control method of a polyethenoxy ether production equipment; By one have the PID controller the DCS control system said process units is carried out data acquisition and control operation; Wherein, Said process units comprise discharge pump, raw material measuring tank, reactor, conduit at least, be located at said supravasal controlling valve, heat interchanger and be located at said reactor and said heat interchanger between supravasal ebullator, it is characterized in that:
(1) the applying electronic weighing sensor detects the weight of said raw material measuring tank, controls the switching of said supravasal controlling valve and discharge pump via the automatic adjustment of said PID controller parameter, with by demand pump in stock to said raw material measuring tank;
(2) pressure of applying pressure transmitters sense reactor; Control said supravasal controlling valve via the automatic adjustment of said PID controller parameter and reach little inertia action, make said reactor pressure stable with the severity of controlling chemical heat release in the said reactor; And
(3) application of temperature transmitters sense reactor temperature is controlled said supravasal controlling valve respectively via the automatic adjustment of said PID controller parameter, makes said reactor temperature stable with the flow of regulating and control chilled water.
2. the automation control method of polyethenoxy ether production equipment as claimed in claim 1, it is characterized in that: said raw material measuring tank is provided with electronic scales molality piece.
3. the automation control method of polyethenoxy ether production equipment as claimed in claim 2 is characterized in that: the raw material that said raw material measuring tank is stored is an oxirane.
4. the automation control method of polyethenoxy ether production equipment as claimed in claim 1, it is characterized in that: said reactor is two.
5. the automation control method of polyethenoxy ether production equipment as claimed in claim 4, it is characterized in that: two said reactors are respectively first reactor and second reactor.
6. the automation control method of polyethenoxy ether production equipment as claimed in claim 5 is characterized in that: corresponding said two said first reactors and second reactor, said heat interchanger is two, i.e. first heat interchanger and second heat interchanger.
7. the automation control method of polyethenoxy ether production equipment as claimed in claim 6 is characterized in that: corresponding said first heat interchanger and second heat interchanger, said ebullator is two, i.e. first ebullator and second ebullator.
8. the automation control method of polyethenoxy ether production equipment as claimed in claim 6, it is characterized in that: said heat interchanger is the plate turning type heat interchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100504163A CN101876822B (en) | 2009-04-30 | 2009-04-30 | Automatic control method for polyethenoxy ether production equipment |
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| CN2009100504163A CN101876822B (en) | 2009-04-30 | 2009-04-30 | Automatic control method for polyethenoxy ether production equipment |
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| CN101876822A CN101876822A (en) | 2010-11-03 |
| CN101876822B true CN101876822B (en) | 2012-07-25 |
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| CN102391382A (en) * | 2011-09-16 | 2012-03-28 | 邸勇 | Automatic control method for reaction kettle for producing cellulose ether |
| CN104028189B (en) * | 2013-03-08 | 2016-03-09 | 上海天坛助剂有限公司 | A kind of automatic production method of multiple phenol polyethenoxy ether sulfonated bodies |
| CN104028190B (en) * | 2013-03-08 | 2015-11-11 | 上海天坛助剂有限公司 | A kind of automatic production method of glycerin polyoxyethylene ether sulfonated bodies |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996041822A1 (en) * | 1995-06-09 | 1996-12-27 | Solvay Polyolefines Europe-Belgium (Societe Anonyme) | Method for controlling chemical synthesis processes |
| WO1999000717A1 (en) * | 1997-06-30 | 1999-01-07 | Honeywell Inc. | Polymerization process controller |
| CN1713096A (en) * | 2004-06-15 | 2005-12-28 | 袁璞 | Control and control system for continuous chemical reactor production |
| CN1809595A (en) * | 2003-06-20 | 2006-07-26 | 阿克佐诺贝尔股份有限公司 | Polymerization process involving the dosing initiators |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996041822A1 (en) * | 1995-06-09 | 1996-12-27 | Solvay Polyolefines Europe-Belgium (Societe Anonyme) | Method for controlling chemical synthesis processes |
| WO1999000717A1 (en) * | 1997-06-30 | 1999-01-07 | Honeywell Inc. | Polymerization process controller |
| CN1809595A (en) * | 2003-06-20 | 2006-07-26 | 阿克佐诺贝尔股份有限公司 | Polymerization process involving the dosing initiators |
| CN1713096A (en) * | 2004-06-15 | 2005-12-28 | 袁璞 | Control and control system for continuous chemical reactor production |
Non-Patent Citations (1)
| Title |
|---|
| 霍罡.《基于PLC的二自由度PID控制算法研究及应用》.《计算机测量与控制》.2005,(第4期), * |
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Effective date of registration: 20220727 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, Xinghuo Development Zone, Fengxian District, Shanghai Patentee before: SHANGHAI TIANTAN AUXILIARIES Co.,Ltd. |
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