CN102031883B - Simulation teaching factory for preparing cyclohexane through benzene hydrogenation - Google Patents
Simulation teaching factory for preparing cyclohexane through benzene hydrogenation Download PDFInfo
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- CN102031883B CN102031883B CN2011100033355A CN201110003335A CN102031883B CN 102031883 B CN102031883 B CN 102031883B CN 2011100033355 A CN2011100033355 A CN 2011100033355A CN 201110003335 A CN201110003335 A CN 201110003335A CN 102031883 B CN102031883 B CN 102031883B
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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 relates to a simulation teaching factory for preparing cyclohexane through benzene hydrogenation, which comprises a chemical engineering device construction area, an indoor operating area and a teaching discussion area, wherein a miniature chemical engineering device, a device frame and the like are arranged inside the chemical engineering device construction area; a control system is arranged inside the indoor operating area and is communicated with the miniature chemical engineering device through a signal cable; and the teaching discussion area is provided with computers and multimedia teaching facilities which are connected with the control system through a signal cable inside the indoor operating area. The simulation teaching factory is basically consistent with actual conditions of a factory, the structure and general situation of a real chemical production device can be realistically known, the cognition of chemical engineering equipment is improved, the actual operating level is enhanced, and cooperation capacity and team spirit are cultivated. Students can really know the structure and general situation of the chemical production device controlled by a decentralized control system (DCS) and can accept chemical production DCS operation training, and the capacity of analyzing and solving problems also can be cultivated and improved.
Description
Technical field
The present invention relates to a kind of simulated teaching factory of chemical field; Specifically relate to a kind of simulated teaching factory of prepared from benzene and hydrogen cyclohexane; Belong to education, chemical process and equipment technical field; Be used to carry out the real Integrated Teaching of reason and the Special Technique Training of all kinds of universities and colleges chemical industry class and relevant speciality thereof, and chemical industry class technician and senior technician's training.
Background technology
In order to realize the professional personnel training target of chemical process specialty of professorship education; " teach-learn-doing " teaching pattern integrated becomes the inevitable requirement of current Higher Occupational Education, and its valid approach is to teaching practice with typical chemical production device " transplanting ".
Because poisonous, the harmful material of the many genus of industrial chemicals and product is produced and under high temperature, high pressure, is carried out usually again, is difficult to guarantee safety and environmental issue in the practice teaching chamber.Therefore, process units is difficult to be transplanted to the practice teaching chamber.Can only be in teaching with the presented or the simulation training of process chart; The student just sees equipment roughly profile and main material trend, can not see the overall picture of process units and the realization of production, even go the real standard of enterprise; Also can only see; Can not operate, the student is difficult to understand from the former realization of expecting the whole process of production of product, has influenced the cultivation of student to understanding, perception and the production operation technical ability of manufacturing process; Knowledge, technical ability and quality that the major of chemical process class is given birth to are difficult to dock with enterprises implement " zero distance ", can not satisfy the requirement of enterprise.
Summary of the invention
In order to overcome the deficiency of existing teaching method, the object of the present invention is to provide a kind of practicality, strong operability, can intact realization theory and the benzene hydrogenation cyclohexane simulated teaching factory that puts into practice the Integrated Teaching purpose.
For achieving the above object, the present invention realizes through following technical scheme:
A kind of simulated teaching factory of prepared from benzene and hydrogen cyclohexane; It is characterized in that comprising chemical plant installations construction district, in-house operation district and teaching Discussion district; Wherein, the chemical plant installations construction is provided with small-sized chemical plant installations, device frame and chemical instruments in the district, and device frame is for installing bracing frame; Small-sized chemical plant installations is arranged on the device frame, and chemical instruments are connected with each instrument in the small-sized chemical plant installations; Be provided with the control system in the in-house operation district, control system and above-mentioned small-sized chemical plant installations pass through signal cable UNICOM; The teaching Discussion district is provided with computer and multimedia teaching facility, and computer and multimedia teaching facility link to each other through signal cable with control system in the in-house operation district; Described chemical industry equipment comprises benzene evaporation equipment, hydrogenation reaction equipment, desulphurization reaction equipment, condensing plant, separation equipment, adsorption plant and exhaust heat recovery apparatus; Wherein, benzene evaporation equipment, hydrogenation reaction equipment, desulphurization reaction equipment, condensing plant, separation equipment, adsorption plant are linked in sequence successively; Described hydrogenation reaction equipment comprises the flow control device of hydrogenation reactor, waste heat boiler and raw material; Wherein, hydrogenation reactor is 2, is respectively front-end hydrogenation agitated reactor, back end hydrogenation reactor; In the middle of 2 hydrogenation reactors, connect a desulfurization reactor, be linked in sequence; Described front-end hydrogenation reactor is an isothermal shell and tube hydrogenation reactor, and the back end hydrogenation reactor is the heat-insulating hydrogenation reactor.
The simulated teaching factory of aforesaid prepared from benzene and hydrogen cyclohexane; It is characterized in that described chemical instruments comprise flow meter, content gauge and instrumentation; Described flow is counted orifice flowmeter, and described liquid level is counted light beam formula content gauge, and described instrumentation is emulation or true instrument.
The simulated teaching factory of aforesaid prepared from benzene and hydrogen cyclohexane; It is characterized in that described control system comprises the next instrument, middle PLC and host computer; Wherein the next instrument and host computer are communicated with middle PLC respectively, and middle PLC is communicated with chemical instruments in the chemical plant installations construction district.
The simulated teaching factory of aforesaid prepared from benzene and hydrogen cyclohexane is characterized in that described device frame is set to upper, middle and lower-ranking, adopts stainless steel structure.
The invention has the beneficial effects as follows: the actual design situation of the equipment of structure design of the present invention and factory is consistent basically; In the process of utilizing the present invention to impart knowledge to students; Can let the student recognize that conscientiously the formation of true chemical production device reaches roughly overview; Improved the understanding of student, strengthened student's practical operation level, cultivated student's collaboration capabilities and sense of community all kinds of chemical industry equipments; In addition; The control system of setting of the present invention can make the student understand truly with the formation of the chemical production device of DCS control and overview roughly, and can accept Chemical Manufacture DCS operation training, utilizes the Development of Software environment also possibly cultivate and improve the ability of analyzing and dealing with problems simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a process flow diagram of the present invention.
Main Reference numeral implication is among the figure:
101 is chemical plant installations construction district, and 102 is the in-house operation district, and 103 is the teaching Discussion district, and 1 is the benzene evaporimeter, and 2 is the front-end hydrogenation reactor; 3 is desulfurization reactor, and 4 is the back end hydrogenation reactor, and 5 is the benzene preheater, and 6 is the finished product condensing apparatus, and 7 is the hydrogen recycle compressor; 8 is the cyclohexane cooler, and 9 is ammonia cooler, and 10 is the cyclohexane gas-liquid separator, and 11 is oil water separator, and 12 is the cyclohexane surge tank; 13 is adsorption system, and 14 is the deep fat expansion slot, and 15 is waste heat boiler, and 16 is the discharging of boiler cooler.
The specific embodiment
To combine accompanying drawing below, specify the specific embodiment of the present invention:
Fig. 1 is a structural representation of the present invention; Fig. 2 is a process flow diagram of the present invention.
To shown in Figure 2, the simulated teaching factory of prepared from benzene and hydrogen cyclohexane of the present invention comprises chemical plant installations construction district 101, in-house operation district 102 and teaching Discussion district 103 like Fig. 1; Wherein, Be provided with small-sized chemical plant installations, device frame and chemical instruments (not shown) in the chemical plant installations construction district 101, device frame is for installing bracing frame, and small-sized chemical plant installations is arranged on the device frame; Chemical instruments are connected with each instrument in the small-sized chemical plant installations; Be provided with the control system in the in-house operation district 102, control system and above-mentioned small-sized chemical plant installations pass through signal cable UNICOM, and teaching Discussion district 103 is provided with many computers and multimedia teaching facility; If computer is 30, promptly have 30 seats (active station).Computer links to each other through signal cable with in-house operation district 102 interior control systems with the multimedia teaching facility.The control system gives computer and multimedia teaching facility transmission signal.
Embodiment:
As shown in Figure 2, present embodiment is example (but being not limited thereto size) to build the simulated teaching factory that builds the prepared from benzene and hydrogen cyclohexane when place clear height is 3.8 meters, and its concrete technological process is following:
Small-sized chemical plant installations in the chemical plant installations construction district 101 comprises benzene evaporation equipment, hydrogenation reaction equipment, desulphurization reaction equipment, condensing plant, separation equipment, adsorption plant and exhaust heat recovery apparatus; Wherein, benzene evaporation equipment, hydrogenation reaction equipment, desulphurization reaction equipment, condensing plant, separation equipment, adsorption plant are linked in sequence successively.The benzene evaporation equipment comprises benzene evaporimeter 1 and benzene preheater 5; Hydrogenation reaction equipment comprises the flow control device of front-end hydrogenation reactor 2, back end hydrogenation reactor 4, waste heat boiler 15 and raw material; Desulphurization reaction equipment is desulfurization reactor 3; Desulfurization reactor 3 is installed between front-end hydrogenation reactor 2 and the back end hydrogenation reactor 4, is linked in sequence.Front-end hydrogenation reactor 2 can adopt isothermal shell and tube reactor or other, back end hydrogenation reactor 4 can adopt adiabatic reactor or other.Exhaust heat recovery apparatus is mainly used in before reaction to raw material and reactor pre-heating temperature elevation provide heat, and heat is shifted out for reactor keeps constant reaction temperature in the reaction back.In real standard, device does not advance real material, and operation control system adopts emulation DCS operation.
Chemical instruments can comprise flow meter, content gauge and instrumentation etc., and flow meter adopts orifice flowmeter, and content gauge adopts light beam formula content gauge, and instrumentation adopts emulation or true instrument.
During real standard, qualified benzene is delivered to benzene evaporimeter 1 through benzene preheater 5, and benzene evaporates needed heat to be provided by the circulating hot oil of benzene preheater 5.Fresh hydrogen, recycle hydrogen and from the hydrogen of dehydrogenation operation the mixture of totally 3 strands of hydrogen as the hydrogen feed of benzene evaporimeter 1; Benzene evaporimeter 1 top benzene, hydrogen gaseous mixture get into front-end hydrogenation reactor 2; Remove the hydrogen sulfide of generation through desulfurization reactor 3; Unreacted benzene further reacts completely in the heat-insulating back end hydrogenation reactor 4 of platinum catalyst is housed, and generates cyclohexane.Reaction heat in the front-end hydrogenation reactor 2 is removed by circulating hot oil; The mist that back end hydrogenation reactor 4 comes out is earlier after benzene preheater 5, benzene feed exchanger and finished product condensing apparatus 6 condensations cooling; In cyclohexane gas-liquid separator 10, carry out gas-liquid separation, obtain the product cyclohexane.Overwhelming majority gas phase is sent to benzene evaporimeter 1 as hydrogen feed through 7 compressions of hydrogen recycle compressor, and few portion gas is behind the deep freezer deep cooling, through the absorption emptying.
In concrete implementation process, can confirm each instrument size according to the actual conditions in selected real standard place, the luggage of going forward side by side is put working drawing designs such as framework and apparatus arrangement.In design process, to consider the original appearance of device on the one hand, also will take into full account instructional function simultaneously, leave enough instructional spaces.For saving the space, can device frame be designed to upper, middle and lower-ranking, 1.5 meters of following layer heights, two layer heights are 0.8 meter, 1.5 meters of three layer heights, or other size.Device frame can adopt stainless steel structure; Device frame column, girder, secondary beam adopt and are welded to connect; In addition; The capital equipment of small-sized chemical plant installations---reactor can all adopt stainless steel, and other adopt carbon steel, and small-sized chemical plant installations can adopt welding or bolt to be connected through journal stirrup or supporting leg with device frame.Connected mode is not limited to above-mentioned mode, can certainly adopt other connected mode.
According to process chart with connecting into technological process with process pipe between each chemical plant installations; Adopt flange to be connected between process pipe and small-sized chemical plant installations; Pipe fitting such as employings such as elbow, threeway in the pipeline are welded to connect; Valve in the pipeline adopts welding respectively according to the valve kind of being selected for use or is threaded, and the chemical instruments in the pipeline adopt welding respectively according to the different types of instrument of select for use or are threaded.Connected mode is not limited to above-mentioned mode, can certainly adopt other connected mode.Should strict be undertaken in the work progress, guarantee that device and true chemical production device are as good as by the various job specfications of chemical plant installations.
Control of the present invention system links to each other with field instrument through signal cable; The control system comprises the next instrument, middle PLC and host computer; Wherein the next instrument and host computer are communicated with middle PLC respectively, and middle PLC is communicated with chemical plant installations construction district 101 interior chemical instruments.The signal that field production device produces passes to upper computer software through middle PLC, process ethernet, and the signal that upper computer software is seen off is implemented control through middle PLC to on-the-spot chemical instruments through ethernet, and on the next instrument of the system of control, shows.Carry out system after construction is accomplished and connect accent; In addition, when carrying out the DCS operation, the same with real process units; Operations such as start-stop car by the common finishing device of active station in several the teaching Discussion districts 103; Engineer station in the teaching Discussion district 103 (being equivalent to the teacher station) can examine operations such as its start-stop cars simultaneously, and each active station also can independently be operated by release unit, and the engineer station can examine separately each active station.Aforesaid operations is all realized through software.
The control employing emulation DCS of system of the present invention operation is operated the service data and the production status of actual production device through computer simulation configuration realization DCS.Can supply each specialty of chemical industry class to carry out the teaching and the Special Technique Training of correlated curriculum, chemical plant installations and control system can realize and the true the same operation of Chemical Manufacture, but because device is not thrown raw material, can carry out operation training repeatedly, and running cost is lower.Multimedia teaching facility in the teaching Discussion district 103 can satisfy the theory teaching function again, therefore in the present invention, can do while learning, and realizes doing in learning by doing,, and real Integrated Teaching is managed in real realization.
The present invention is in carrying out the production operation process; It is local that some faults can also deliberately be set; Its objective is cultivate that student (student or the worker of enterprise) pinpoints the problems, the ability of problem analysis and handling problem, and carry out technological transformation technical measures ability, be particularly suitable for technician and senior technician's training.
Utilize the present invention can realize the Cognition Practice of the drafting of chemical plant installations process chart, all kinds of chemical industry equipments, all kinds of chemical instruments Cognition Practice, DCS operation training, according to giving device start-stop car step divide into groups to carry out the training of chemical plant installations start-stop car and cultivate simultaneously the student collaboration capabilities and sense of community, can also let the student find out the device weak point according to device start-stop car situation, and corrective measure etc. is proposed.The present invention can the implement device fault operation such as setting and processing; Can realize simultaneously the post division of labor, inside and outside behaviour's operation, and more flexible than true process units; But the real standard operation of package unit; The real standard operation of independence is carried out in also desirable arbitrary post, can a computer operation, and also can many computer joint operations.Flexibility is very strong.
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replacement or the technical scheme that obtained of equivalent transformation mode, all drop within protection scope of the present invention.
Claims (4)
1. the simulated teaching factory of prepared from benzene and hydrogen cyclohexane; It is characterized in that comprising chemical plant installations construction district, in-house operation district and teaching Discussion district; Wherein, the chemical plant installations construction is provided with small-sized chemical plant installations, device frame and chemical instruments in the district, and device frame is for installing bracing frame; Small-sized chemical plant installations is arranged on the device frame, and chemical instruments are connected with each instrument in the small-sized chemical plant installations; Be provided with the control system in the in-house operation district, control system and above-mentioned small-sized chemical plant installations pass through signal cable UNICOM; The teaching Discussion district is provided with computer and multimedia teaching facility, and computer and multimedia teaching facility link to each other through signal cable with control system in the in-house operation district; Described chemical industry equipment comprises benzene evaporation equipment, hydrogenation reaction equipment, desulphurization reaction equipment, condensing plant, separation equipment, adsorption plant and exhaust heat recovery apparatus; Wherein, benzene evaporation equipment, hydrogenation reaction equipment, desulphurization reaction equipment, condensing plant, separation equipment, adsorption plant are linked in sequence successively; Described hydrogenation reaction equipment comprises the flow control device of hydrogenation reactor, waste heat boiler and raw material; Wherein, hydrogenation reactor is 2, is respectively front-end hydrogenation agitated reactor, back end hydrogenation reactor; In the middle of 2 hydrogenation reactors, connect a desulfurization reactor, be linked in sequence; Described front-end hydrogenation reactor is an isothermal shell and tube hydrogenation reactor, and the back end hydrogenation reactor is the heat-insulating hydrogenation reactor.
2. the simulated teaching factory of prepared from benzene and hydrogen cyclohexane according to claim 1; It is characterized in that described chemical instruments comprise flow meter, content gauge and instrumentation; Described flow is counted orifice flowmeter; Described liquid level is counted light beam formula content gauge, and described instrumentation is emulation or true instrument.
3. the simulated teaching factory of prepared from benzene and hydrogen cyclohexane according to claim 1; It is characterized in that described control system comprises the next instrument, middle PLC and host computer; Wherein the next instrument and host computer are communicated with middle PLC respectively, and middle PLC is communicated with chemical instruments in the chemical plant installations construction district.
4. the simulated teaching factory of prepared from benzene and hydrogen cyclohexane according to claim 1 is characterized in that described device frame is set to upper, middle and lower-ranking, adopts stainless steel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100033355A CN102031883B (en) | 2011-01-10 | 2011-01-10 | Simulation teaching factory for preparing cyclohexane through benzene hydrogenation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100033355A CN102031883B (en) | 2011-01-10 | 2011-01-10 | Simulation teaching factory for preparing cyclohexane through benzene hydrogenation |
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| Publication Number | Publication Date |
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| CN102031883A CN102031883A (en) | 2011-04-27 |
| CN102031883B true CN102031883B (en) | 2012-01-18 |
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| CN2011100033355A Expired - Fee Related CN102031883B (en) | 2011-01-10 | 2011-01-10 | Simulation teaching factory for preparing cyclohexane through benzene hydrogenation |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881215A (en) * | 2012-10-15 | 2013-01-16 | 南京化工职业技术学院 | Simulation teaching factory for producing aniline by hydrogenating nitrobenzene |
| CN103400532A (en) * | 2013-07-16 | 2013-11-20 | 南京化工职业技术学院 | Integrated Texaco coal-to-methanol simulation teaching factory |
| CN105336260A (en) * | 2014-08-06 | 2016-02-17 | 南京化工职业技术学院 | Styrene teaching factory for teaching and training |
| CN105336261A (en) * | 2014-08-06 | 2016-02-17 | 南京化工职业技术学院 | Pyromellitic dianhydride teaching factory for teaching and training |
| CN104361812B (en) * | 2014-12-10 | 2017-02-22 | 南京化工职业技术学院 | Cyclohexanone-oxime synthesis and practical training device for teaching and training |
| CN105390059A (en) * | 2015-12-07 | 2016-03-09 | 秦皇岛博赫科技开发有限公司 | Multi-technology body feeling type chemical safety training device |
| CN107067940B (en) * | 2016-12-28 | 2019-04-12 | 杭州百子尖科技有限公司 | Pin-connected panel chemical engineering simulation equipment |
| CN114935107A (en) * | 2022-06-15 | 2022-08-23 | 浙江浙能航天氢能技术有限公司 | Simple hydrogenation device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707025A (en) * | 2009-12-11 | 2010-05-12 | 南京化工职业技术学院 | Actual training device for producing cyclohexane by hydrogenation of benzene for teaching |
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Address after: 225700, Xinghua City, Jiangsu province Taizhou City Development Zone, Xicheng Road, South Road Patentee after: Nanjing College of Chemical Technology Address before: 210048 Jiangsu city of Nanjing province Dachang geguan Road No. 625 Patentee before: Nanjing College of Chemical Technology |
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Granted publication date: 20120118 Termination date: 20180110 |
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