CN219936554U - Safety skill training and checking device for oxidation process operation - Google Patents
Safety skill training and checking device for oxidation process operation Download PDFInfo
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- CN219936554U CN219936554U CN202320638152.9U CN202320638152U CN219936554U CN 219936554 U CN219936554 U CN 219936554U CN 202320638152 U CN202320638152 U CN 202320638152U CN 219936554 U CN219936554 U CN 219936554U
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- 238000012549 training Methods 0.000 title claims abstract description 94
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 72
- 230000003647 oxidation Effects 0.000 title claims abstract description 70
- 238000011112 process operation Methods 0.000 title claims abstract description 52
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 154
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 111
- 238000004519 manufacturing process Methods 0.000 claims abstract description 49
- 238000011282 treatment Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims description 166
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000010791 quenching Methods 0.000 claims description 9
- 230000000171 quenching effect Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 4
- 239000004509 smoke generator Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 53
- 230000008569 process Effects 0.000 abstract description 40
- AEWKYDHSUQKENZ-UHFFFAOYSA-N formaldehyde iron molybdenum Chemical compound C=O.[Mo].[Fe] AEWKYDHSUQKENZ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 description 11
- 238000004088 simulation Methods 0.000 description 10
- 230000002159 abnormal effect Effects 0.000 description 7
- HZNPCLUBXJLRAA-UHFFFAOYSA-N iron;oxomolybdenum Chemical compound [Fe].[Mo]=O HZNPCLUBXJLRAA-UHFFFAOYSA-N 0.000 description 7
- DSMZRNNAYQIMOM-UHFFFAOYSA-N iron molybdenum Chemical compound [Fe].[Fe].[Mo] DSMZRNNAYQIMOM-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000009776 industrial production Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides an oxidation process operation safety skill training and checking device, which comprises a DCS control system, a formaldehyde production device and a field instrument module arranged on the formaldehyde production device, wherein the formaldehyde production device and the field instrument module are respectively connected with the DCS control system through signal cables; the formaldehyde production device comprises a methanol treatment system, an air treatment system, a superheated steam system, a mixer and a reactor. The oxidation process operation safety skill training and checking device provided by the utility model follows the process principle, so that operators can fully know the process flow, the process principle, the structure and the purpose of main equipment of the iron-molybdenum formaldehyde production process, and the control scheme is truly close to the production practice, thereby effectively improving the oxidation process operation safety skill level of students and practitioners in schools.
Description
Technical Field
The utility model relates to the technical field of formaldehyde production simulation training devices, in particular to an oxidation process operation safety skill training and checking device.
Background
In the existing formaldehyde industrial production, mainly methanol is oxidized, and the method is classified into a silver method and an iron-molybdenum method according to the type of the catalyst used. Compared with the silver method, the iron-molybdenum method production device has the advantages of high production capacity, low unit consumption of methanol, capability of producing formaldehyde with high concentration, more friendly environment and the like. Therefore, recently, the formaldehyde device newly built and expanded worldwide also adopts the iron-molybdenum method production process.
In the industrial production adopting the formaldehyde process route of the oxidation method, raw materials used are methanol and high-pressure air, and products are formaldehyde; raw material alcohol and high-pressure air are dangerous chemicals which are inflammable and explosive, and the whole production process is high temperature and high pressure; in order to ensure safety, the prior formaldehyde production process safety skill training and checking method adopts a pure simulation mode, does not need to run any materials, uses all simulation instrument valves, has incomplete process flow and control logic scheme, is excessively simplified, adopts eccentric weight examination for evidence collection, has single function, has hollow training content, has huge differences between the appearance and installation form of a physical device, the type and style of the instrument, a DCS control system and the like and an actual production site, has little practical guidance significance on the safety work of the industrial production site, and can not effectively improve the safety skill level of the oxidation process operation of school students and practitioners.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide an oxidation process operation safety skill training and checking device. The oxidation process operation safety skill training and checking device provided by the utility model follows the process principle, fully considers the actual situation of an iron molybdenum oxide catalyst oxidation process formaldehyde production factory, enables operators to fully know the process flow, the process principle, the structure and the purpose of main equipment of the iron molybdenum process formaldehyde production process, and enables the control scheme to be truly close to the production practice, thereby effectively improving the oxidation process operation safety skill level of school students and practitioners; in addition, the oxidation process operation safety skill training and checking device provided by the utility model adopts water to simulate methanol, normal pressure air simulates high pressure air, the whole operation process is normal temperature and normal pressure, no danger exists, safety and environmental protection are realized, and materials can be recycled.
The utility model provides an oxidation process operation safety skill training and checking device, which comprises a DCS control system, a formaldehyde production device and a field instrument module arranged on the formaldehyde production device, wherein the formaldehyde production device and the field instrument module are respectively connected with the DCS control system through signal cables;
the formaldehyde production device comprises a methanol treatment system, an air treatment system, a superheated steam system, a mixer and a reactor; the methanol treatment system, the air treatment system and the superheated steam system are all communicated with the mixer; the reactor is internally provided with a reaction section, a quenching section and a cooling section from top to bottom in sequence, and the outlet of the mixer is communicated with the reaction section in the reactor.
In one embodiment of the utility model, the methanol treatment system comprises a formaldehyde storage tank, a methanol pump, a reboiler and an evaporator which are sequentially communicated through pipelines, wherein the outlet of the evaporator is communicated with the mixer through a pipeline.
In one embodiment of the utility model, the air treatment system comprises a blower and an air heater, wherein an air outlet of the blower is communicated with an inlet of the air heater through a pipeline, and an outlet of the air heater is communicated with the mixer through a pipeline.
In one embodiment of the utility model, the superheated steam system is in communication with the mixer via a line.
In one embodiment of the utility model, the evaporator and the side of the reactor are both provided with a fire extinguishing operation training and checking module, and the fire extinguishing operation training and checking module comprises a simulated fire extinguisher, a flame pot and a smoke generator.
In one embodiment of the utility model, the formaldehyde production plant further comprises a steam header pipe; and the steam header pipe is provided with branch pipes which are respectively communicated with the reboiler and the air heater.
In one embodiment of the utility model, the formaldehyde production device further comprises a steam drum; a cooling medium circulation channel corresponding to the position of the quenching section is arranged outside the reactor, and a water inlet and a steam-water mixture outlet are respectively arranged on the cooling medium circulation channel;
the steam drum comprises a water feeding port, a reflux port, a steam-water mixture inlet and a steam outlet;
the water supply port is communicated with an external water source through a pipeline, the backflow port is communicated with the water inlet through a pipeline, the steam-water mixture inlet is communicated with the steam-water mixture outlet through a pipeline, and the steam outlet is communicated with the steam header pipe.
In an embodiment of the present utility model, the field instrument module includes a first solenoid valve, a first flow rate detection control instrument, a first electric valve, a first level detection control instrument, a second solenoid valve, a second flow rate detection control instrument, a second electric valve, a first pressure detection control instrument, a third flow rate detection control instrument, a third electric valve, a fifth flow rate detection control instrument, a fifth electric valve, a temperature detection control instrument, a fourth flow rate detection control instrument, a fourth electric valve, a sixth flow rate detection control instrument, a sixth electric valve, a second level detection control instrument, a seventh electric valve, and a second pressure detection control instrument;
the pipeline between the methanol pump and the reboiler is sequentially provided with the first electromagnetic valve, the first flow detection control instrument and the first electric valve, the evaporator is provided with the first material level detection control instrument, and the first flow detection control instrument and the first material level detection control instrument are connected with the first electric valve;
the branch pipes between the reboiler and the steam header pipe are sequentially provided with the second electromagnetic valve, the second flow detection control instrument and the second electric valve, the first pressure detection control instrument is arranged between the evaporator and the mixer, and the second flow detection control instrument and the first pressure detection control instrument are connected with the second electric valve;
the pipeline between the evaporator and the mixer is sequentially provided with the third flow detection control instrument and the third electric valve, and the third flow detection control instrument is connected with the third electric valve;
the pipeline between the blower and the air heater is provided with a fifth flow detection control instrument, and the fifth flow detection control instrument is connected with the blower;
the branch pipes between the steam header pipe and the air heater are provided with the fifth electric valve, the air heater is provided with a temperature detection control instrument, and the temperature detection control instrument is connected with the fifth electric valve;
the pipeline between the superheated steam system and the mixer is sequentially provided with a fourth flow detection control instrument and a fourth electric valve, and the fourth flow detection control instrument is connected with the fourth electric valve;
the sixth flow detection control instrument and the sixth electric valve are sequentially arranged on a pipeline between the water feeding port and the external water source, the second position detection control instrument is arranged on the steam drum, the sixth flow detection control instrument and the second position detection control instrument are both connected with the sixth electric valve, the seventh electric valve is arranged on the pipeline between the steam outlet and the steam main pipe, the second pressure detection control instrument is also arranged on the steam drum, and the second pressure detection control instrument is connected with the seventh electric valve;
the DCS control system is respectively connected with the first electromagnetic valve, the first flow detection control instrument, the first material level detection control instrument, the second electromagnetic valve, the second flow detection control instrument, the first pressure detection control instrument, the third flow detection control instrument, the fifth flow detection control instrument, the temperature detection control instrument, the fourth flow detection control instrument, the sixth flow detection control instrument, the second material level detection control instrument and the second pressure detection control instrument through signal cables.
In one embodiment of the utility model, the oxidation process operation safety skill training and checking device further comprises an ESD emergency stop system;
the evaporator is provided with a first temperature detection interlocking alarm instrument, and the reactor is provided with a second temperature detection interlocking alarm instrument;
the ESD emergency stop system is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the sixth electric valve, the first temperature detection interlocking alarm instrument, the second temperature detection interlocking alarm instrument and the methanol pump.
In one embodiment of the utility model, both the evaporator top and the drum top are provided with safety valves.
Compared with the prior art, the embodiment of the utility model has the following beneficial effects:
1. the device for training and checking the safety skills of the oxidation process operation provided by the embodiment of the utility model follows the process principle, fully considers the actual situation of the formaldehyde production factory by the iron-molybdenum oxide catalyst oxidation method, enables operators to fully know the process flow, the process principle and the structure and the purpose of main equipment of the iron-molybdenum formaldehyde production process, and enables the control scheme to be truly close to the production practice, thereby effectively improving the safety skill level of the oxidation process operation of school students and practitioners.
2. According to the oxidation process operation safety skill training and checking device provided by the embodiment of the utility model, each instrument is truly operable, so that the sense of reality of practical training teaching is enhanced, the sense of training experience is improved, and meanwhile, the professional skill, safety consciousness and responsibility consciousness of chemical engineering operation are enhanced when a learner learns.
3. The oxidation process operation safety skill training and checking device provided by the embodiment of the utility model uses the alternative materials, namely water and air, to perform material conveying, so that the defects of high risk and cost of real materials and the like are avoided, and the running cost is effectively reduced.
4. The oxidation process operation safety skill training and checking device provided by the embodiment of the utility model integrates training and checking, is designed with a plurality of training and checking functions such as hidden trouble checking, device starting operation, device normal operation, device stopping operation, abnormal treatment, emergency treatment and the like, the appearance and the mounting mode of equipment are referred to the actual industrial site, and an industrial layout and a real industrial grade DCS control system are adopted, so that the safety skill training and checking of high-risk enterprises of the oxidation process can be widely developed, a multi-element safety skill training carrier is realized, and the basic capability construction of supporting the safety skill training of the oxidation process is realized.
5. According to the oxidation process operation safety skill training and checking device provided by the embodiment of the utility model, the fire extinguishing operation training and checking module is arranged beside the evaporator and the reactor, so that the operation of fire extinguishing by a student by using the fire extinguisher can be trained and checked while the oxidation process operation is trained and checked.
6. In the oxidation process operation safety skill training and checking device provided by the embodiment of the utility model, the DCS control system and the ESD emergency stop system are mutually independent, and the running safety of the device is monitored in real time by the ESD emergency stop system mutually independent, so that when abnormal conditions such as overtemperature, overpressure and the like occur, the system can alarm in time and automatically process, and the running safety of the system is ensured.
7. According to the oxidation process operation safety skill training and checking device provided by the embodiment of the utility model, the oxidation process operation safety skill real-time examination and cultivation are carried out in a simulation mode, so that multiple types of training such as dangerous chemical process operation safety training, post personnel safety training, emergency exercise training, occupational safety health and the like of school students, enterprise responsible persons and enterprise safety management personnel can be integrated, and a complete, scientific and effective oxidation process operation safety skill training and checking device system is formed.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of an oxidation process operation safety skill training and assessment device according to an embodiment of the present utility model;
the correspondence between each mark and the part name is as follows:
the formaldehyde storage tank 1, the methanol pump 2, the first electric valve 3, the first flow rate detection control meter 4, the first electromagnetic valve 5, the reboiler 6, the second electric valve 7, the second flow rate detection control meter 8, the second electromagnetic valve 9, the first pressure detection control meter 10, the first level detection control meter 11, the evaporator 12, the first temperature detection interlock alarm meter 13, the third flow rate detection control meter 14, the third electric valve 15, the air heater 16, the blower 17, the fifth flow rate detection control meter 18, the temperature detection control meter 19, the fifth electric valve 20, the fourth electric valve 21, the fourth flow rate detection control meter 22, the superheated steam system 23, the mixer 24, the first temperature detection meter 25, the flame arrestor 26, the second temperature detection interlock alarm meter 27, the reactor 28, the sixth electric valve 29, the second level detection control meter 30, the sixth flow rate detection control meter 31, the second pressure detection control meter 32, the seventh electric valve 33, the steam drum 34, the steam header 35, the second temperature detection meter 36, and the pressure indication meter 37.
Detailed Description
The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.
Examples
Referring to fig. 1, the embodiment discloses an oxidation process operation safety skill training and checking device, which comprises a DCS control system, a formaldehyde production device and a field instrument module mounted on the formaldehyde production device, wherein the DCS control system is respectively connected with the formaldehyde production device and the field instrument module through signal cables.
Specifically, the formaldehyde production apparatus in this embodiment includes a methanol treatment system, an air treatment system, a superheated steam system, a mixer 24, a reactor 28; the methanol treatment system, the air treatment system and the superheated steam system are all communicated with the mixer 24; the reactor 28 is internally provided with a reaction section, a quenching section and a cooling section in sequence from top to bottom, the outlet of the mixer 24 is communicated with the reaction section in the reactor 28 through a pipeline, and the reactor is discharged to an absorption section for further processing. Wherein a flame arrestor 26 is mounted on the line between the outlet of mixer 24 and reactor 28.
The methanol treatment system in this embodiment includes a formaldehyde storage tank 1, a methanol pump 2, a reboiler 6, and an evaporator 12, which are sequentially connected by a pipeline, and an outlet of the evaporator 12 is connected to a mixer 24 by a pipeline.
The air treatment system includes a blower 17 and an air heater 16, an air outlet of the blower 17 is in communication with an inlet of the air heater 16 through a pipeline, and an outlet of the air heater 16 is in communication with a mixer 24 through a pipeline.
The superheated steam system 23 is in communication with the mixer 24 via a line, the superheated steam system 23 being adapted to provide superheated steam into the mixer 24.
The formaldehyde production device in this embodiment further comprises a steam drum 34 and a steam header 35; wherein, the reactor 28 is provided with a cooling medium circulation channel corresponding to the position of the quenching section, and the cooling medium circulation channel is filled with a heat exchange medium to exchange heat with the reaction product in the quenching section, the cooling medium circulation channel comprises a water inlet and a steam-water mixture outlet, and the steam drum 34 comprises a water feeding mouth, a reflux mouth, a steam-water mixture inlet and a steam outlet; the water feed port is communicated with an external water source through a pipeline, the reflux port is communicated with the water inlet through a pipeline, the steam-water mixture inlet is communicated with the steam-water mixture outlet through a pipeline, and the steam outlet is communicated with the steam manifold 35.
The steam header 35 in this embodiment is provided with branch pipes which are respectively communicated with the reboiler 6 and the air heater 16.
Specifically, the field instrument module in the present embodiment includes a first solenoid valve 5, a first flow rate detection control instrument 4, a first electrically operated valve 3, a first level detection control instrument 11, a second solenoid valve 9, a second flow rate detection control instrument 8, a second electrically operated valve 7, a first pressure detection control instrument 10, a third flow rate detection control instrument 14, a third electrically operated valve 15, a fifth flow rate detection control instrument 18, a fifth electrically operated valve 20, a temperature detection control instrument 19, a fourth flow rate detection control instrument 22, a fourth electrically operated valve 21, a sixth flow rate detection control instrument 31, a sixth electrically operated valve 29, a second level detection control instrument 30, a seventh electrically operated valve 33, and a second pressure detection control instrument 32.
A field pressure gauge, a first electromagnetic valve 5, a first flow detection control instrument 4 and a first electric valve 3 are sequentially arranged on a pipeline between the methanol pump 2 and the reboiler 6 in the embodiment; the evaporator 12 is provided with a first material level detection control instrument 11, and the first material level detection control instrument 11 and the first flow detection control instrument 4 are connected with the first electric valve 3;
a second electromagnetic valve 9, a second flow detection control instrument 8 and a second electric valve 7 are sequentially arranged on a branch pipe between the reboiler 6 and the steam main pipe 35; a first pressure detection control instrument 10 is arranged on a pipeline between the evaporator 12 and the mixer, and the second flow detection control instrument 8 and the first pressure detection control instrument 10 are connected with a second electric valve 7;
a third flow detection control instrument 14 and a third electric valve 15 are sequentially arranged on a pipeline between the evaporator 12 and the mixer 24; the third flow detection control instrument 14 is connected with a third electric valve 15;
a fifth flow detection control instrument 18 is arranged on a pipeline between the blower 17 and the air heater 16, and the fifth flow detection control instrument 18 is connected with the blower;
a fifth electric valve 20 is arranged on a branch pipe between the steam main pipe 35 and the air heater 16, a temperature detection control instrument 19 is arranged on the air heater, and the temperature detection control instrument 19 is connected with the fifth electric valve 20;
a fourth flow detection control instrument 22 and a fourth electric valve 21 are sequentially arranged on a pipeline between the superheated steam system 23 and the mixer 24, and the fourth flow detection control instrument 22 is connected with the fourth electric valve;
a first temperature detection instrument 25 is arranged on a pipeline between the mixer 24 and the reactor 28, a pressure indication instrument 37 is arranged on the reactor 28, and a site liquid level meter LG is arranged on an evaporator; a second temperature sensing instrument 36 is provided in the line between the steam-water mixture inlet and the steam-water mixture outlet.
A sixth flow detection control instrument 31 and a sixth electric valve 29 are sequentially arranged on a pipeline between the water feeding mouth and an external water source, a second level detection control instrument 30 is arranged on the steam drum, the sixth flow detection control instrument 31 and the second level detection control instrument 30 are connected with the sixth electric valve 29 in a signal mode, a seventh electric valve 33 is arranged on a pipeline between the steam outlet and the steam main pipe 35, a second pressure detection control instrument 32 is further arranged on the steam drum, and the second pressure detection control instrument 37 is connected with the seventh electric valve 33.
Specifically, the first solenoid valve 5, the first flow rate detection control meter 4, the first level detection control meter 11, the second solenoid valve 9, the second flow rate detection control meter 8, the first pressure detection control meter 10, the third flow rate detection control meter 14, the fifth flow rate detection control meter 18, the temperature detection control meter 19, the fourth flow rate detection control meter 22, the sixth flow rate detection control meter 31, the second level detection control meter 30, and the second pressure detection control meter 32 in the present embodiment are connected to the DCS control system via signal cables, respectively.
When the training and checking device for the operation safety skill of the oxidation process in the embodiment is used for practical training, the process for producing the formaldehyde by using the iron-molybdenum oxide catalyst oxidation method is simulated, and the process is carried out at the normal pressure and the temperature of 250-400 ℃, so that the purposes of reducing side reactions, reducing the decomposition amount of formaldehyde products and having high selectivity can be achieved. In the process of oxidizing the iron-molybdenum oxide catalyst to generate formaldehyde, only one main reaction occurs in the catalyst layer of the reactor 28, formaldehyde is generated by the oxidation reaction, the oxidation reaction is exothermic, reaction heat is removed through high-boiling-point heat conduction oil outside a tube type fixed bed reactor tube, so that the stability of reaction temperature is ensured, formaldehyde as a reaction product is converted into solution through the processes of cooling, condensing and absorbing, and industrial formaldehyde products with certain formaldehyde content are obtained by controlling the water adding amount, and the formaldehyde yield of the iron-molybdenum formaldehyde production process is 92.2% -93.1%.
The main chemical reaction formula of the formaldehyde production process by the iron molybdenum oxide catalyst oxidation method is as follows:
CH 3 OH+1/2O 2 →HCHO+H 2 O
the device for training and checking the safety skills of the oxidation process operation fully considers the actual situation of the formaldehyde production factory by the iron-molybdenum oxide catalyst oxidation method, so that operators can fully know the technological process, the technological principle and the structure and the application of main equipment of the iron-molybdenum formaldehyde production process.
When the oxidation process operation safety skill training and checking device in the embodiment is used for practical training, the simulated material in the methanol storage tank is water, and the water supply mouth is communicated with an external tap water source.
When the oxidation process operation safety skill training and checking device in the embodiment is used for practical training, the recyclable safe substitute materials, namely water and air, are arranged in the formaldehyde production device, so that the defects of high risk and cost of real materials and the like are avoided, and the operation cost is reduced.
When the oxidation process operation safety skill training and checking device in the embodiment is used for practical training, the specific operation is as follows:
the methanol in the methanol storage tank is fed into the bottom of a reboiler 6 after the flow of the methanol is controlled by a first electromagnetic valve 5, a first flow detection control instrument 4 and a first electric valve 3 through a methanol pump 2;
the shell side heating steam of the reboiler 6 is provided by a steam main 35, the flow rate of the shell side heating steam of the reboiler 6 is regulated by a second electromagnetic valve 9, a second flow rate detection and control instrument 8 and a second electric valve 7, methanol in the reboiler 6 is gasified and then enters an evaporator 12, and methanol liquid in the evaporator 12 flows back to the reboiler 6 for reheating and gasification;
the methanol vapor enters a mixer 24 after the mist drops are removed from a silk screen separator at the top of the evaporator 12 and the flow is controlled by a third flow detection control instrument 14 and a third electric valve 15;
the air is quantitatively conveyed into the air heater 16 heated by steam by the blower 17 and the fifth flow detection control instrument 18 for preheating, and enters the mixer 24 after being preheated; the flow rate of the steam delivered to the air heater 16 by the steam manifold 35 is regulated by the temperature detection control meter 19;
the superheated steam enters the mixer 24 after being subjected to flow regulation by the fourth flow detection control instrument 22 and the fourth electric valve 21;
after being uniformly mixed in the mixer 24, the methanol vapor, the heated air and the superheated vapor are sent into a reactor 28 filled with a catalyst through a flame arrester 26, and pass through a catalyst layer from top to bottom, and oxidation and dehydrogenation reactions of methanol occur at high temperature to generate formaldehyde gas. In order to prevent thermal decomposition of reaction products, the generated formaldehyde gas is rapidly cooled down by a quenching section and a cooling section of the reactor 28 and then sent to an absorption tower for absorption and purification operation; the methanol is oxidized to generate formaldehyde, a large amount of reaction heat is discharged from the reaction, the formaldehyde gas generated by the reaction passes through a quenching section and a cooling section of the reactor 28, the discharged heat is exchanged with water from the steam drum 34, and saturated steam generated by heat exchange enters the steam drum 34 and finally is collected into the steam manifold 35 for production.
When the oxidation process operation safety skill training and checking device in the embodiment is used for practical training, simulation processing is carried out after measurement signals of the instruments are acquired, and DCS instrument data can simulate the process parameters of a real formaldehyde production system by an iron-molybdenum oxide catalyst oxidation method in industry.
A hand valve is further arranged on a pipeline in the oxidation process operation safety skill training and checking device, and is provided with a valve position signal feedback device, so that the operation of the hand valve can be timely fed back to the DCS control system by an operator. The automatic valve control, the switch and the like of the production site are automatically and manually controlled in a central control room.
The oxidation process operation safety skill training and checking device in the embodiment further comprises an ESD emergency stop system; the evaporator 12 is provided with a first temperature detection interlocking alarm instrument 13, and the reactor 28 is provided with a second temperature detection interlocking alarm instrument 27; the ESD emergency stop system is connected to the first electromagnetic valve 5, the second electromagnetic valve 9, the sixth electrically operated valve 29, the first temperature detection interlock alarm meter 13, the second temperature detection interlock alarm meter 27, and the methanol pump 2, respectively. Through the safety of the operation of the real-time on-line monitoring device of the ESD emergency stop system, a plurality of interlocking control system points are arranged in the whole device, and the device has an ESD interlocking protection function, and when abnormal conditions such as overtemperature, overpressure and the like occur, the system can alarm in time and automatically process, so that the operation safety of the system is ensured.
The instrument in the embodiment is real in operability, so that the sense of reality of practical training teaching is enhanced, the sense of training experience is improved, and meanwhile, the professional skill, the safety consciousness and the responsibility consciousness of chemical engineering operation are enhanced when a learner learns.
Further, the oxidation process operation safety skill training and checking device in this embodiment further includes a fire extinguishing operation training and checking module, the side of the evaporator 12 and the side of the reactor 28 are respectively provided with a fire extinguishing operation training and checking module, the fire extinguishing operation training and checking module includes a simulated fire extinguisher, a flame pot and a smoke generator, and when the training and checking are performed, a student uses the fire extinguisher to perform the training and checking of the fire extinguishing operation.
The oxidation process operation safety skill training and assessment device further comprises a simulation system and a scoring system, wherein the simulation system is used for transmitting the instrument signals received by the DCS control system at the same time, the DCS control system transmits control instructions to the instruments at the same time, the simulation system generates data display information of the formaldehyde production device in different operation stages in real time according to a preset training model, the instrument signals and the control instructions transmitted by the DCS control system, the data display information is transmitted to the DCS control system, the DCS control system transmits all input and output signals to the scoring system, and the scoring system obtains stage scores and final scores of different operation stages according to the preset assessment model and the signals transmitted to the scoring system by the DCS control system. The simulation system is computer real-time calculation software, is directly connected with the DCS control system through a background software interface, and ensures real-time data transmission with the control system, so that the basic data is updated in real time and the calculation result is fed back in real time. The scoring system is computer real-time assessment software, and is directly connected with the DCS control system through a background software interface, so that the synchronous assessment and operation are ensured. The oxidation process operation safety skill training and checking device in the embodiment is tightly buckled with the examination standard design, follows the process principle, blends abnormal faults, sets an accident simulation scene and can realize automatic scoring by a computer. And the advanced acousto-optic technology and the industrial control system are integrated into the device, so that the device is close to the actual industrial site and reflects the time characteristics.
The DCS control system in this embodiment is a DCS control system manufactured by Zhejiang center control technology corporation. The DCS control system in this embodiment has the following functions: (1) Collecting parameters (all parameters such as pressure, liquid level, flow and the like of processes and equipment in each processing unit) of each training area are displayed in real time, and collecting value out-of-limit or faults (caused by high-low pressure, liquid level and other parameters and equipment faults of the processes and the equipment of each processing unit) are alarmed; (2) metering and valve position status monitoring; (3) failure alarms of processes, equipment, instruments and meters and the like; (4) network communication disruption alarm; (5) The dynamic display of the technological process (the display of the parameters of each post), the automatic generation of reports such as daily reports, monthly reports, parameter trend curves and the like, and the storage and inquiry of historical data; (6) The equipment is started and stopped, and the standby power supply device is started and controlled when power is cut off; (7) Combustible gas, toxic and harmful gas and instrument measuring range, and setting an alarm range; (8) Faults (frozen blockage, leakage, overpressure, overtemperature and ignition) and treatments in the production process (including ground processes and equipment) can be set; (9) The automatic valve control, the switch and the like of the production site are automatically and manually controlled in a central control room.
The oxidation process operation safety skill training and checking device in the embodiment can complete skill training and safety education of operators, such as start training, on-duty personnel skill training, on-duty personnel and newly-entered staff.
The oxidation process operation safety skill training and checking device in the embodiment can also complete the safety training and accident handling training of the oxidation process, and operators can perform the fault handling training according to the fault accident handling flow by simulating classical faults in the production of the oxidation process device, so that the emergency handling skills of students under different abnormal conditions are realized.
By adopting the oxidation process operation safety skill training and checking device, various training and checking contents of hidden trouble checking, device start and stop, normal operation, abnormal handling and emergency handling can be completed. The specific training examination points are as follows:
(1) And (5) hidden danger investigation: important dangerous source safety warning board, dangerous chemical safety Zhou Zhika, equipment safety grounding, safety valve, human body electrostatic discharge facility, power equipment, fire-fighting and emergency equipment; (2) device start-up operation: training and checking the starting process of the oxidation process; (3) normal operation of the device: performing training and checking on normal operation of an oxidation process; (4) exception handling: performing abnormal treatment training and assessment on the oxidation process; (5) emergency treatment: emergency disposal training and checking of an oxidation process; (6) device parking operation: and (5) training and checking in the stopping process of the oxidation process.
Further, the oxidation process operation safety skill training and checking device in this embodiment is designed with hidden trouble checking function, and hidden trouble points are set as follows: the important dangerous source safety warning board, the dangerous chemical safety Zhou Zhika, the equipment safety grounding, the safety valve and the like are used for training and checking the dangerous source, the safety notice, the personal protection and the like of the site by searching hidden danger points arranged on the site oxidation process operation safety skill training and checking device. Wherein, all be provided with the relief valve on evaporimeter and the steam pocket, methyl alcohol storage tank, evaporimeter, methyl alcohol pump and reactor department all are provided with great danger source safety warning sign and dangerous chemical safety Zhou Zhika.
In addition, the oxidation process operation safety skill training and checking device in the embodiment further comprises a supporting frame for supporting and placing the formaldehyde production device, wherein the supporting frame is made of carbon steel, the surface of the supporting frame is subjected to plastic spraying treatment, and a pattern plate is paved on a supporting frame platform.
The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the utility model and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The oxidation process operation safety skill training and checking device is characterized by comprising a DCS control system, a formaldehyde production device and a field instrument module arranged on the formaldehyde production device, wherein the formaldehyde production device and the field instrument module are respectively connected with the DCS control system through signal cables;
the formaldehyde production device comprises a methanol treatment system, an air treatment system, a superheated steam system, a mixer and a reactor; the methanol treatment system, the air treatment system and the superheated steam system are all communicated with the mixer; the reactor is internally provided with a reaction section, a quenching section and a cooling section from top to bottom in sequence, and the outlet of the mixer is communicated with the reaction section in the reactor.
2. The oxidation process operation safety skill training and assessment device according to claim 1, wherein the methanol treatment system comprises a formaldehyde storage tank, a methanol pump, a reboiler and an evaporator which are sequentially communicated through pipelines, and an outlet of the evaporator is communicated with the mixer through a pipeline.
3. The oxidation process operation safety skill training and assessment device according to claim 2, wherein the air treatment system comprises a blower and an air heater, an air outlet of the blower is in communication with an inlet of the air heater through a pipeline, and an outlet of the air heater is in communication with the mixer through a pipeline.
4. The oxidation process operation safety skill training and assessment apparatus according to claim 3, wherein said superheated steam system is in communication with said mixer via a pipeline.
5. The oxidation process operation safety skill training and assessment device according to claim 4, wherein the evaporator and the side of the reactor are provided with fire extinguishing operation training and assessment modules, and the fire extinguishing operation training and assessment modules comprise a simulated fire extinguisher, a flame pot and a smoke generator.
6. The oxidation process operation safety skill training and assessment apparatus according to claim 4, wherein the formaldehyde production apparatus further comprises a steam header pipe; and the steam header pipe is provided with branch pipes which are respectively communicated with the reboiler and the air heater.
7. The oxidation process operation safety skill training and assessment device according to claim 6, wherein the formaldehyde production device further comprises a steam drum; a cooling medium circulation channel corresponding to the position of the quenching section is arranged outside the reactor, and a water inlet and a steam-water mixture outlet are respectively arranged on the cooling medium circulation channel;
the steam drum comprises a water feeding port, a reflux port, a steam-water mixture inlet and a steam outlet;
the water supply port is communicated with an external water source through a pipeline, the backflow port is communicated with the water inlet through a pipeline, the steam-water mixture inlet is communicated with the steam-water mixture outlet through a pipeline, and the steam outlet is communicated with the steam header pipe.
8. The oxidation process operation safety skill training and assessment device according to claim 7, wherein the field instrument module comprises a first solenoid valve, a first flow detection control instrument, a first electrically operated valve, a first level detection control instrument, a second solenoid valve, a second flow detection control instrument, a second electrically operated valve, a first pressure detection control instrument, a third flow detection control instrument, a third electrically operated valve, a fifth flow detection control instrument, a fifth electrically operated valve, a temperature detection control instrument, a fourth flow detection control instrument, a fourth electrically operated valve, a sixth flow detection control instrument, a sixth electrically operated valve, a second level detection control instrument, a seventh electrically operated valve, and a second pressure detection control instrument;
the pipeline between the methanol pump and the reboiler is sequentially provided with the first electromagnetic valve, the first flow detection control instrument and the first electric valve, the evaporator is provided with the first material level detection control instrument, and the first flow detection control instrument and the first material level detection control instrument are connected with the first electric valve;
the branch pipes between the reboiler and the steam header pipe are sequentially provided with the second electromagnetic valve, the second flow detection control instrument and the second electric valve, the first pressure detection control instrument is arranged between the evaporator and the mixer, and the second flow detection control instrument and the first pressure detection control instrument are connected with the second electric valve;
the pipeline between the evaporator and the mixer is sequentially provided with the third flow detection control instrument and the third electric valve, and the third flow detection control instrument is connected with the third electric valve;
the pipeline between the blower and the air heater is provided with a fifth flow detection control instrument, and the fifth flow detection control instrument is connected with the blower;
the branch pipes between the steam header pipe and the air heater are provided with the fifth electric valve, the air heater is provided with a temperature detection control instrument, and the temperature detection control instrument is connected with the fifth electric valve;
the pipeline between the superheated steam system and the mixer is sequentially provided with a fourth flow detection control instrument and a fourth electric valve, and the fourth flow detection control instrument is connected with the fourth electric valve;
the sixth flow detection control instrument and the sixth electric valve are sequentially arranged on a pipeline between the water feeding port and the external water source, the second position detection control instrument is arranged on the steam drum, the sixth flow detection control instrument and the second position detection control instrument are both connected with the sixth electric valve, the seventh electric valve is arranged on the pipeline between the steam outlet and the steam main pipe, the second pressure detection control instrument is also arranged on the steam drum, and the second pressure detection control instrument is connected with the seventh electric valve;
the DCS control system is respectively connected with the first electromagnetic valve, the first flow detection control instrument, the first material level detection control instrument, the second electromagnetic valve, the second flow detection control instrument, the first pressure detection control instrument, the third flow detection control instrument, the fifth flow detection control instrument, the temperature detection control instrument, the fourth flow detection control instrument, the sixth flow detection control instrument, the second material level detection control instrument and the second pressure detection control instrument through signal cables.
9. The oxidation process operation safety skill training and assessment device according to claim 8, further comprising an ESD emergency shutdown system;
the evaporator is provided with a first temperature detection interlocking alarm instrument, and the reactor is provided with a second temperature detection interlocking alarm instrument;
the ESD emergency stop system is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the sixth electric valve, the first temperature detection interlocking alarm instrument, the second temperature detection interlocking alarm instrument and the methanol pump.
10. The oxidation process operation safety skill training and assessment device according to claim 7, wherein the evaporator top and the drum top are both provided with safety valves.
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| CN202320638152.9U CN219936554U (en) | 2023-03-28 | 2023-03-28 | Safety skill training and checking device for oxidation process operation |
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| CN202320638152.9U CN219936554U (en) | 2023-03-28 | 2023-03-28 | Safety skill training and checking device for oxidation process operation |
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