CN101876818A - Automation control method of production devices of sodium naphthalene sulfonate series products - Google Patents
Automation control method of production devices of sodium naphthalene sulfonate series products Download PDFInfo
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- CN101876818A CN101876818A CN2009100504178A CN200910050417A CN101876818A CN 101876818 A CN101876818 A CN 101876818A CN 2009100504178 A CN2009100504178 A CN 2009100504178A CN 200910050417 A CN200910050417 A CN 200910050417A CN 101876818 A CN101876818 A CN 101876818A
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Abstract
The invention provides an automation control method of production devices of sodium naphthalene sulfonate series products, wherein a PLC control system with a PID controller is used to perform data collection and control operation to the production devices; and the parameters of the PID controller are automatically adjusted to control a feed valve on a feed duct and regulating valves on a steam duct and cooling water duct, thus stabilizing the pressure and temperature in the reaction tank and further solving the problem that in the existing production technology, the production devices require manual control and auxiliary operation of meters so that the dispersion force, component content and stability of the products are poor and the product quality is affected.
Description
Technical field
The present invention relates to a kind of surfactant production technology, particularly relate to a kind of automation control method of production devices of sodium naphthalene sulfonate series products.
Background technology
Sodium naphthalene sulfonate (Naphthalene sulfonate) series of products are a kind of superior performance, broad-spectrum chemical assistant, are widely used in printing and dyeing, building, agricultural chemicals, rubber, plating, coating and other industry and daily life.
The production technology of described devices of sodium naphthalene sulfonate series products is mainly through oversulfonate, hydrolysis, condensation, neutralization and drying and other steps, in traditional production line, produce the device of described sodium naphthalene sulfonate, mainly comprise two raw material head tanks (being sulfuric acid high position tank and formaldehyde head tank), reactor, the conduit that is communicated with described raw material head tank and described reactor, and be arranged at the controlling valve that is used to control material flow on the described conduit, in addition, also be communicated with many conduits being used for described temperature control and pressure control (the turnover conduit of recirculated water for example on the described reactor, steam passes in and out conduit and is used for compressed-air actuated conduit etc.), and respectively be provided with controlling valve on this conduit.
In actual production process, the sheet refined naphthalene is directly added described reactor, carrying out the Steam Heating intensification then melts described sheet refined naphthalene, after treating its whole fusions, the concentrated sulphuric acid with a certain amount of proportioning in the described sulfuric acid high position tank continuously adds described reactor sulfonation insulation two hours with certain flow again, the deionized water hydrolysis that adds metering again, be cooled to temperature required after intermediate detection is qualified, then, the formaldehyde of a certain amount of proportioning in the described formaldehyde head tank added lentamente with certain flow carry out condensation in the reactor, stir insulation and made reaction more abundant in ten hours, after condensation reaction finishes, during material moved into and the back spray drying that neutralizes in the still.So, the device of the described sodium naphthalene sulfonate of existing production all is by control manually, the instrument non-productive operation, because the manually-operated labile factor is more, especially the man-induced fluctuations factor is bigger on links such as material metering, charging rate, temperature of reaction, reaction pressure, reaction time, products obtained therefrom shows that mainly dispersancy, component concentration and stable aspect are all inadequate, thereby bigger to the quality influence of product, has become the present problem demanding prompt solution for the dealer of association area.
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 production devices of sodium naphthalene sulfonate series products, 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.
Reach other relevant purposes for achieving the above object, the invention provides a kind of automation control method of production devices of sodium naphthalene sulfonate series products, by a PLC control system with PID controller described process units is carried out data acquisition and control operation, wherein, described process units comprises discharge pump at least, the raw material head tank, reactor, feed conduit, steam and coolant guide pipe, be located at the inlet valve on the described feed conduit, and be located at variable valve on described steam and the coolant guide pipe respectively, it is characterized in that: (1) applying electronic weighing sensor detects the weight of raw material head tank, control the inlet valve on the described feed conduit and the switching of discharge pump via the automatic adjustment of described PID controller parameter, with by the demand pump in stock to this raw material head tank.(2) pressure in the applying pressure transmitters sense reactor, reach little inertia action via the inlet valve on the automatic adjustment control feed conduit of described PID controller parameter, make described reacting kettle inner pressure stable with the fierce degree of controlling chemical heat release in the reactor.(3) application of temperature transmitters sense reactor temperature is controlled variable valve on described steam and the coolant guide pipe respectively via the automatic adjustment of described PID controller parameter, makes described reactor temperature stable with the flow of steam regulation and chilled water.
In the automation control method of production devices of sodium naphthalene sulfonate series products of the present invention, described step (1) comprises also that before the sheet refined naphthalene is added described reactor and Steam Heating to heat up its operation steps of melting.
In the automation control method of production devices of sodium naphthalene sulfonate series products of the present invention, described raw material head tank is two, i.e. sulfuric acid high position tank and formaldehyde head tank, and in the present invention's embodiment, described raw material head tank is provided with electronic scales molality piece.
As mentioned above, the automation control method of production devices of sodium naphthalene sulfonate series products of the present invention mainly is by a PLC control system with PID controller described process units to be carried out data acquisition and control operation, need control and instrument non-productive operation manually to solve process units described in the existing production technology, and the product dispersancy that causes, component concentration and the stable aspect problem that influences product quality such as all inadequate has promptly effectively overcome various shortcoming of the prior art.
Description of drawings
Fig. 1 is shown as the framework synoptic diagram of production devices of sodium naphthalene sulfonate series products of the present invention.
Fig. 2 display application is in the framework synoptic diagram for PLC control system among the present invention.
Fig. 3 display application is in the principle of work synoptic diagram for PID controller among the present invention.
Fig. 4 is shown as the robotization regulating and controlling principle schematic of reinforced program among the present invention.
Fig. 5 is shown as the robotization regulating and controlling principle schematic of reactor pressure control program among the present invention.
Fig. 6 is shown as the robotization regulating and controlling principle schematic of reactor temperature control program among the present invention.
The simple declaration of element numbers:
11 discharge pumps
12 raw material head tanks
13 reactors
14 feed conduits
15 steam and coolant guide pipe
16 inlet valves
17 variable valve
21 initialization modules
22 raw material configuration modules
23 process control modules
24 charging control modules
25 reactor pressure control modules
26 reactor temperature control modules
Embodiment
Below by specific instantiation explanation embodiments of the present invention, 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 be implemented or be used by other different embodiment, and the every 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 production devices of sodium naphthalene sulfonate series products of the present invention.As shown in the figure, the invention provides a kind of automation control method of production devices of sodium naphthalene sulfonate series products, by a PLC control system with PID controller described process units is carried out data acquisition and control operation, wherein, described process units comprise discharge pump 11, raw material head tank 12, reactor 13, feed conduit 14, steam and coolant guide pipe 15 at least, be located at the inlet valve 16 on the described feed conduit 14 and be located at described steam respectively and coolant guide pipe 15 on variable valve 17.
In the automation control method of production devices of sodium naphthalene sulfonate series products of the present invention, described raw material head tank 12 is two, be sulfuric acid high position tank 12 and formaldehyde head tank 12, in the present invention's embodiment, described raw material head tank 12 is provided with electronic scales molality piece (among the figure not label).
See also Fig. 2, Fig. 2 display application is in the framework synoptic diagram that is PLC control system of the present invention.As shown in the figure, described production devices of sodium naphthalene sulfonate series products carries out data acquisition and control operation by a PLC control system, in present embodiment, described PLC control system has initialization module 21, raw material configuration module 22, process control module 23, charging control module 24, reactor pressure control module 25 and reactor temperature control module 26.What need special explanation is, described PLC control system also has a PID controller, be used for above-described respectively this module is controlled, described PID controller principle of work as shown in Figure 3, be that pid parameter adjusts be in above-described respectively this module, 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 described PID controller (among the figure not label) obtains calculate and are suitable for the proportional band (P) that stability margin requires, integration (I), differential controlled variable such as (d); Adjust coefficient via the PID study of adjusting certainly, P, the I, D parameter and the actual measurement operating condition that obtain the minimum stability margin of input, moderate stability margin, maximum stable nargin are adjusted coefficient, adjust P, I, D parameter, so that system obtains desirable sound attitude control.
See also Fig. 4, Fig. 4 is shown as the robotization regulating and controlling principle schematic of reinforced program among the present invention.The applying electronic weighing sensor detects the weight of raw material head tank 12, controls the inlet valve 16 on the described feed conduit 14 and the switching of discharge pump 11 via the automatic adjustment of described PID controller parameter, with by the demand pump in stock to this raw material head tank 12.In present embodiment, because the raw material concentrated sulphuric acid is delivered to sulfuric acid high position tank 12 from the irrigated area pump, a discharge pump 11 is share in several workshops, adding the above discharge pump 11 has the control of the characteristics sulfuric acid feedstock pump of batch production to be connected, like this in working control, control employing order combines with interlocking, and the workshop is that sulfuric acid high position tank 12 adopts electronic scales molality piece, and it is standby that the sulfuric acid of setting weight can pump into workshop sulfuric acid high position tank 12 as required automatically.Formaldehyde head tank 12 also adopts the metering of electronic scales molality piece.The instantaneous delivery that raw material adds in the still is converted out by the reduction of heavy unit interval of meter, and feeding quantity also can be set in man-machine interface.
See also Fig. 5, Fig. 5 is shown as the robotization regulating and controlling principle schematic of reactor pressure control program among the present invention.Pressure in the applying pressure transmitters sense reactor 13, reach little inertia action via the inlet valve 16 on the automatic adjustment control feed conduit 14 of described PID controller parameter, make described reactor 13 internal pressures stable with the fierce degree of controlling chemical heat releases in the reactor 13.
See also Fig. 6, Fig. 6 is shown as the robotization regulating and controlling principle schematic of reactor temperature control program among the present invention.Temperature in the application of temperature transmitters sense reactor 13 are controlled variable valve 17 on described steam and the coolant guide pipe 15 respectively via the automatic adjustment of described PID controller parameter, make temperature stabilizations in the described reactor 13 with the flow of steam regulation and chilled water.
In the production run of sulfonation condensation, the control of reactor temperature is more unmanageable always, add the inadequate natural endowment of some auxiliary processes, the way that often adopts the people to stare in the prior art, but be difficult to reach ideal effect, in this device, adopt multipoint temperature measuring specifically, make full use of the advantage of PLC control system, with sequential control, interlocked control and complicated loop algorithm perfectly combine, program can (some important parameters be such as interior temperature according to current state, add acid, formaldehyde flow amount, pressure etc.) learn reaction process, carry out up-to-date controlling schemes then, so both made the technological parameter trend stable, improved the quality of product again.
Need to prove, method of the present invention mainly is in the automation control method of production devices of sodium naphthalene sulfonate series products of the present invention, also comprises before the step of described reinforced program the sheet refined naphthalene being added described reactor and Steam Heating heats up its operation steps of melting.
In sum, the automation control method of production devices of sodium naphthalene sulfonate series products of the present invention mainly is by a PLC control system with PID controller described process units to be carried out data acquisition and control operation, need control and instrument non-productive operation manually to solve process units described in the existing production technology, and the product dispersancy that causes, component concentration and the stable aspect problem that influences product quality such as all inadequate; Moreover, adopt automation control method can reach accurate metering, pressure and stable temperature control in the reactor not only can be saved energy consumption about 10%, and reduced labour intensity, guaranteed constant product quality, made the product the key technical indexes particularly, diffusive force brings up to 115 by original 100, product must be measured every batch increases by 200～300Kg, overall economic efficiency is better, has reached the set goal, has 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 personage who has the knack of this technology all can be under spirit of the present invention and category, and the foregoing description is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of being finished under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (5)
1. the automation control method of a production devices of sodium naphthalene sulfonate series products, by a PLC control system with PID controller described process units is carried out data acquisition and control operation, wherein, described process units comprises discharge pump, raw material head tank, reactor, feed conduit, steam and coolant guide pipe at least, be located at the inlet valve on the described feed conduit and be located at variable valve on described steam and the coolant guide pipe respectively, it is characterized in that:
(1) the applying electronic weighing sensor detects the weight of raw material head tank, controls the inlet valve on the described feed conduit and the switching of discharge pump via the automatic adjustment of described PID controller parameter, with by the demand pump in stock to this raw material head tank.
(2) pressure in the applying pressure transmitters sense reactor, reach little inertia action via the inlet valve on the automatic adjustment control feed conduit of described PID controller parameter, make described reacting kettle inner pressure stable with the fierce degree of controlling chemical heat release in the reactor.
(3) application of temperature transmitters sense reactor temperature is controlled variable valve on described steam and the coolant guide pipe respectively via the automatic adjustment of described PID controller parameter, makes described reactor temperature stable with the flow of steam regulation and chilled water.
2. the automation control method of production devices of sodium naphthalene sulfonate series products as claimed in claim 1, it is characterized in that: described raw material head tank is two.
3. the automation control method of production devices of sodium naphthalene sulfonate series products as claimed in claim 2, it is characterized in that: described raw material head tank is sulfuric acid high position tank and formaldehyde head tank.
4. the automation control method of production devices of sodium naphthalene sulfonate series products as claimed in claim 3, it is characterized in that: described raw material head tank is provided with electronic scales molality piece.
5. the automation control method of production devices of sodium naphthalene sulfonate series products as claimed in claim 1 is characterized in that: described step (1) also comprises before and the sheet refined naphthalene is added described reactor and Steam Heating heats up its operation steps of melting.
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Cited By (6)
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| CN102391382A (en) * | 2011-09-16 | 2012-03-28 | 邸勇 | Automatic control method for reaction kettle for producing cellulose ether |
| CN104014294A (en) * | 2014-03-28 | 2014-09-03 | 上海天坛助剂有限公司 | Automatic butyl naphthalene sulfonate production device and automatic control method thereof |
| CN104028190A (en) * | 2013-03-08 | 2014-09-10 | 上海天坛助剂有限公司 | Sulfonated ethoxylated glycerine automatic-production system and automatic control method thereof |
| CN104028189A (en) * | 2013-03-08 | 2014-09-10 | 上海天坛助剂有限公司 | Sulfonated composite phenol ethoxylate automatic-production system and automatic-control method thereof |
| CN104536494A (en) * | 2014-11-11 | 2015-04-22 | 新奥科技发展有限公司 | Control method of supercritical processing system |
| CN115318216A (en) * | 2022-08-26 | 2022-11-11 | 焦作市华康糖醇科技有限公司 | Hydrolysis reaction kettle device and automatic control method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100340933C (en) * | 2004-06-15 | 2007-10-03 | 袁璞 | Control and control system for continuous chemical reactor production |
| CN201626929U (en) * | 2010-01-21 | 2010-11-10 | 上海天坛助剂有限公司 | Automatic control device for producing naphthalene sulfonate series products |
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2009
- 2009-04-30 CN CN2009100504178A patent/CN101876818B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391382A (en) * | 2011-09-16 | 2012-03-28 | 邸勇 | Automatic control method for reaction kettle for producing cellulose ether |
| CN104028190A (en) * | 2013-03-08 | 2014-09-10 | 上海天坛助剂有限公司 | Sulfonated ethoxylated glycerine automatic-production system and automatic control method thereof |
| CN104028189A (en) * | 2013-03-08 | 2014-09-10 | 上海天坛助剂有限公司 | Sulfonated composite phenol ethoxylate automatic-production system and automatic-control method thereof |
| 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 |
| 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 |
| CN104014294A (en) * | 2014-03-28 | 2014-09-03 | 上海天坛助剂有限公司 | Automatic butyl naphthalene sulfonate production device and automatic control method thereof |
| CN104014294B (en) * | 2014-03-28 | 2016-02-03 | 上海天坛助剂有限公司 | A kind of sodium butylnaphthalenesulfonate automatic production method |
| CN104536494A (en) * | 2014-11-11 | 2015-04-22 | 新奥科技发展有限公司 | Control method of supercritical processing system |
| CN115318216A (en) * | 2022-08-26 | 2022-11-11 | 焦作市华康糖醇科技有限公司 | Hydrolysis reaction kettle device and automatic control method thereof |
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| CN101876818B (en) | 2012-04-18 |
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Effective date of registration: 20220809 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. |