CN207591623U - A kind of experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs - Google Patents
A kind of experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs Download PDFInfo
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- CN207591623U CN207591623U CN201721618951.0U CN201721618951U CN207591623U CN 207591623 U CN207591623 U CN 207591623U CN 201721618951 U CN201721618951 U CN 201721618951U CN 207591623 U CN207591623 U CN 207591623U
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Abstract
The utility model belongs to institution of higher education's Experimental Teaching for Environmental Engineering Specialty field, and in particular to a kind of experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs.The utility model device includes air distribution system, reaction system and exhaust system.Microwave heating technique is applied in teaching experiment by the utility model experimental provision, and traditional diamond heating system is replaced using microwave heating system；It is tested using continuous sample introduction method, the type and concentration of target contaminant can be adjusted flexibly, preferably meet the needs of teaching experiment；Can preferably continuity simulation organic exhaust gas catalysis oxidation correlated process, can effectively measure the important parameters such as its inlet gas concentration, product species and concentration, purification efficiency；Installation area is small, detachably, easy for assembly, dependable performance；The experimental provision of the utility model can open up comprehensibility,creativity and designability experiment, strengthen Students ' Operating Skill and Engineering Design Ability.
Description
Technical field
The utility model belongs to institution of higher education's Experimental Teaching for Environmental Engineering Specialty field, and in particular to a kind of simulated microwave association
With the experimental teaching unit of catalytic oxidation treatment VOCs.
Background technology
The discharge of volatile organic matter (VOCs) increasingly increases, serious threat to public health and living environment.It urges at present
It is one of mainstream of VOCs exhaust gas treatment technologies to change oxidation.Thermal energy is from outward appearance to inner essence propagated during common diamond heating reaction, is caused
Sample heating is uneven；The heat of releasing has little time to scatter and disappear so that sintering and agglomeration occur for catalyst component, change and urge
Agent pore passage structure reduces the conversion ratio of VOCs so as to influence catalyst activity；The big high energy consumption of electrical heating heat loss.Microwave
Heating have it is quick, be evenly heated, penetrability is strong, no hysteresis quality, it is energy-efficient the advantages that and inducing catalysis oxidation, change point
Interaction force between son, make chemical reaction rate faster, yield higher can even change the performance of product.Using microwave plus
Heat substitutes traditional electrical heating, it will help keeps the stability and high activity of catalyst, improves the catalyzing oxidizing degrading of object
Effect.
Environmental project experiment is the important laboratory that environmental specialties include the profession such as environmental science, environmental project
Journey, training student manipulative ability, innovation ability and overall qualities.The processing of organic exhaust gas is important one of experiment content.Mesh
Preceding organic exhaust gas catalytic purification processing unit is mostly diamond heating system, and the application of microwave heating is less.In order to which microwave is added
Thermal technology is applied to teaching experiment and is generalized in practical application, and the operative skill and manipulative ability of exercise student ', and culture is learned
Raw research and innovation ability and Engineering Design Ability, the present invention devise a kind of microwave heating concerted catalysis oxidation processes VOCs's
Novel analog experimental teaching unit, this is of great significance to the needs of talent for meeting society.
Utility model content
For the needs of the prior art, at a kind of simulated microwave concerted catalysis oxidation
The experimental teaching unit of VOCs is managed, available for carrying out organic exhaust gas urging under microwave cooperating effect in small scale experiments level
Change oxidation analog research.Installation area is small, detachably, easy for assembly, dependable performance, can preferably continuity simulation have
Machine exhaust fume catalytic oxidation correlated process, will not generation environment pollution, it is environmentally protective.
The technical solution of the utility model can be realized by following technical measures：
A kind of experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs, including the connection of pipeline successively：
For generating the air distribution system of simulation VOCs exhaust gas；
For the reaction system of exhaust fume catalytic oxidation；
For collecting the exhaust system for handling polluter in tail gas,
The reaction system includes microwave generating apparatus, catalyst oxidation reactor, the reaction of the catalyst oxidation reactor
Part is set to inside the microwave generating apparatus, and the gas access of the catalyst oxidation reactor and gas vent are both provided with
Thief hatch.
Preferably, it is slow to include nitrogen cylinder, oxygen bottle, bubbler, low temperature thermostat bath and first for the air distribution system
Flushing device, the nitrogen cylinder are divided into diluent gas gas circuit and toluene stripping gas circuit, diluent gas gas after being connected with oxygen bottle
Road connects the first buffer unit, bubbler is connected between toluene stripping gas circuit and the first buffer unit, the bubbler is built-in
There is toluene liquid, low temperature thermostat bath is immersed in the lower end of the bubbler, and nitrogen passes through the toluene gas of bubbler blowout volatilization, institute
State the gas access that the first buffer unit connects the catalyst oxidation reactor.
Preferably, the exhaust system includes the second buffer unit, methanol absorption device and the hydrogen-oxygen of pipeline connection successively
Change sodium solution absorption plant, second buffer unit connects the gas vent of the catalyst oxidation reactor.
Preferably, the nitrogen cylinder is respectively connected with gas flowmeter and valve with oxygen bottle before gas circuit connects,
Gas flowmeter and valve are also connected between the diluent gas gas circuit and the first buffer unit.
Preferably, the microwave generating apparatus is connected with temperature controller.
Preferably, the power of the microwave generating apparatus is 50-300w, and hollow and upper end opening is inserted into from upper end and is urged
Oxidation device.
Preferably, the catalyst oxidation reactor is U-shaped quartz ampoule, and quartzy bottom of the tube loads catalyst.
This experimental provision can be connected by gas piping and voluntarily be assembled, and according to different experiments purpose and adjusting apparatus be required to match
It puts.This experimental provision is not limited to the catalytic purification to toluene in gas, by replacing the organic liquor in air distribution system in bubbler
Body and bath temperature can also realize the microwave cooperating catalytic to chlorobenzene, formaldehyde, benzene etc..
The present invention has the following advantages compared with conventional apparatus：
1st, experimental provision of the present invention replaces traditional diamond heating system using microwave heating system, by microwave heating skill
Art is applied in teaching experiment.
2nd, experimental provision of the invention carries out experimental teaching using continuous sample introduction method, can preferable simulation toluene catalytically oxygen
The correlated process of change can effectively measure the important parameters such as its inlet gas concentration, product species and concentration, purification efficiency.By more
Target contaminant can be adjusted flexibly in the organic liquid and the temperature of constant temperature water bath or gas flow ratio changed in air distribution system
Type and concentration, preferably meet the needs of teaching experiment.The experimental provision gas sampling mouth design of the present invention can be accomplished i.e.
When sample, can be more accurate obtain gas correlation analog parameter.
3rd, experimental provision of the invention carries out effective absorption processing in experimentation to go, will not generation environment pollution
Object, it is environmentally protective.
4th, experimental provision of the invention can open up comprehensibility,creativity and designability experiment, strengthen students'autonomous study
With the training of independent thinking ability.
5th, experimental provision of the invention is compact-sized, and floor space is small, and detachably, assembling is convenient, according to different experiments mesh
And adjusting apparatus is required to be configured, experimental system is voluntarily assembled by student and is tested, can be with the operative skill of exercise student '
And Engineering Design Ability.
Description of the drawings
Using attached drawing, the utility model is described in further detail, but the embodiment in attached drawing is not formed to the utility model
Any restrictions.
Fig. 1 is the device of the invention system framework figure；
Fig. 2 is the device of the invention system schematic.
Attached drawing in figure is labeled as：
1, nitrogen cylinder；2, oxygen bottle；3, bubbler；4, low temperature thermostat bath；5, the first buffer unit；6, catalysis oxidation
Reactor；7, temperature controller；8, microwave generating apparatus；9, the second buffer unit；10, methanol absorption device；11, sodium hydroxide
Solution absorption plant；12-14, gas flowmeter；15-19, valve；20-21, U-tube differential manometer；22-23 bypasses interface.
Specific embodiment
To make the utility model easier to understand, specific embodiment of the utility model is further illustrated below.
As shown in Figs. 1-2, a kind of experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs, including managing successively
Road connection：
For generating the air distribution system of simulation VOCs exhaust gas；
For the reaction system of exhaust fume catalytic oxidation；
For collecting the exhaust system for handling polluter in tail gas,
The reaction system include microwave generating apparatus 8, catalyst oxidation reactor 6, the catalyst oxidation reactor 6 it is anti-
It should partly be set to inside the microwave generating apparatus 8, the gas access of the catalyst oxidation reactor 6 and gas vent are all provided with
It is equipped with thief hatch.
Preferably, the air distribution system includes nitrogen cylinder 1, oxygen bottle 2, bubbler 3, low temperature thermostat bath 4 and the
One buffer unit 5, the nitrogen cylinder 1 are divided into diluent gas gas circuit and toluene stripping gas circuit after being connected with oxygen bottle 2, dilution
Gas gas circuit connects the first buffer unit 5, and bubbler 3, the drum are connected between toluene stripping gas circuit and the first buffer unit 5
Low temperature thermostat bath 4 is immersed equipped with toluene liquid, the lower end of the bubbler 3 in bubbler 3, nitrogen is blown out by bubbler 3 to volatilize
Toluene gas, first buffer unit 5 connects the gas access of the catalyst oxidation reactor 6.
Preferably, the exhaust system includes the second buffer unit 9, methanol absorption device 10 and the hydrogen of pipeline connection successively
Sodium hydroxide solution absorption plant 11, second buffer unit 9 connect the gas vent of the catalyst oxidation reactor 6.
Preferably, the nitrogen cylinder 1 and oxygen bottle 2 be connected separately with before gas circuit connects gas flowmeter 12,
13 and valve 16,17, it is connected with gas flowmeter 14 and valve 15 between the diluent gas gas circuit and the first buffer unit 5.
Preferably, the microwave generating apparatus 8 is connected with temperature controller 7.
Preferably, the power of the microwave generating apparatus 8 is 50-300w, and hollow and upper end opening is inserted into from upper end and is urged
Oxidation device 6.
Preferably, the catalyst oxidation reactor 6 is U-shaped quartz ampoule, and quartzy bottom of the tube loads catalyst.
The present invention works in this way：Catalyst bed is loaded in catalyst oxidation reactor 6.Valve 16 and 17 is opened, is adjusted
Solar term flowmeter body 12 and 13, makes N2And O2It is mixed with certain proportion.Opening valve 15,18 and 19, adjusting gas flow meter 14,
Mixed gas enters in the bubbler 3 in low temperature thermostat bath 4 all the way, toluene liquid is housed, after gas enters in bubbler 3
Stripping goes out the gas containing toluene, and another way is diluted it with converging containing toluene gas, dense to reach required toluene
Degree.Two-way gas is uniformly mixed in the first buffer unit 5.Mixed gas enters the U-shaped being placed in microwave generating apparatus 8
Catalytic is carried out in catalyst oxidation reactor 6.Reaction temperature is visited by 7 armouring K- type thermocouple measurements of temperature controller
Needle is goed deep by top in reactor, and external digital display measurement and control instrument.Gas after catalytic oxidation is after the first buffer unit 5
Methanol absorption device 10 and sodium hydroxide solution absorption plant 11 are sequentially entered, tail gas after being absorbed to harmful substance therein
Discharge.U-tube differential manometer 20 is connected between reaction system inlet and outlet, can intuitively reflect pressure difference during toluene catalytic oxidation reaction
Variation.Reaction system is exported is connected with U-tube differential manometer 21 between exhaust port, and the gas that can directly reflect after reaction exists
Pressure difference variation in absorbing liquid absorption process.Reaction system inlet and outlet are respectively equipped with bypass interface 22 and 23, external gas-chromatography
Instrument, the variation of gas each component before and after being reacted for measure.
Embodiments of the present invention are not limited to the present embodiment.Other any essence and principle without departing from the present invention
And change, modification, replacement, combination, simplification made etc., equivalent substitute mode is regarded as, is included in the protection of the present invention
Within the scope of.
Claims (7)
1. a kind of experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs, it is characterised in that：Including pipeline successively
Connection：
For generating the air distribution system of simulation VOCs exhaust gas；
For the reaction system of exhaust fume catalytic oxidation；
For collecting the exhaust system for handling polluter in tail gas,
The reaction system includes microwave generating apparatus, catalyst oxidation reactor, the reactive moieties of the catalyst oxidation reactor
It is set to inside the microwave generating apparatus, the gas access of the catalyst oxidation reactor and gas vent are both provided with sampling
Mouthful.
2. the experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs according to claim 1, feature exist
In：The air distribution system includes nitrogen cylinder, oxygen bottle, bubbler, low temperature thermostat bath and the first buffer unit, the nitrogen
Gas cylinder is divided into diluent gas gas circuit and toluene stripping gas circuit, the first buffering of diluent gas gas circuit connection after being connected with oxygen bottle
Device is connected with bubbler between toluene stripping gas circuit and the first buffer unit, toluene liquid is housed in the bubbler, described
Low temperature thermostat bath is immersed in the lower end of bubbler, and nitrogen passes through the toluene gas of bubbler blowout volatilization, first buffer unit
Connect the gas access of the catalyst oxidation reactor.
3. the experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs according to claim 1, feature exist
In：The second buffer unit, methanol absorption device and the sodium hydroxide solution that the exhaust system includes pipeline connection successively absorb
Device, second buffer unit connect the gas vent of the catalyst oxidation reactor.
4. the experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs according to claim 2, feature exist
In：The nitrogen cylinder is respectively connected with gas flowmeter and valve, the diluent gas with oxygen bottle before gas circuit connects
Gas flowmeter and valve are also connected between gas circuit and the first buffer unit.
5. the experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs according to claim 1, feature exist
In：The microwave generating apparatus is connected with temperature controller.
6. the reaction system of the experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs according to claim 1
System, it is characterised in that：The power of the microwave generating apparatus is 50-300w, and hollow and upper end opening is inserted into from upper end and is catalyzed
Oxidation reactor.
7. the reaction system of the experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs according to claim 1
System, it is characterised in that：The catalyst oxidation reactor is U-shaped quartz ampoule, and quartzy bottom of the tube loads catalyst.
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| CN201721618951.0U CN207591623U (en) | 2017-11-28 | 2017-11-28 | A kind of experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs |
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| CN201721618951.0U CN207591623U (en) | 2017-11-28 | 2017-11-28 | A kind of experimental teaching unit of simulated microwave concerted catalysis oxidation processes VOCs |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579033A (en) * | 2018-12-13 | 2019-04-05 | 西安建筑科技大学 | The burner and its analoging detecting device and method of volatile organic compounds |
| CN109675400A (en) * | 2018-12-28 | 2019-04-26 | 武汉理工大学 | Organic exhaust gas high temperature pyrolysis device |
| CN111366677A (en) * | 2020-04-15 | 2020-07-03 | 华南理工大学 | SCR catalyst performance evaluation device for removing nitric oxide, benzene and toluene in cooperation |
| CN117110172A (en) * | 2023-10-24 | 2023-11-24 | 中国矿业大学 | Gas seepage start pressure gradient testing device and application method |
-
2017
- 2017-11-28 CN CN201721618951.0U patent/CN207591623U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579033A (en) * | 2018-12-13 | 2019-04-05 | 西安建筑科技大学 | The burner and its analoging detecting device and method of volatile organic compounds |
| CN109579033B (en) * | 2018-12-13 | 2020-09-04 | 西安建筑科技大学 | Volatile organic compound combustion device and simulation detection device and method thereof |
| CN109675400A (en) * | 2018-12-28 | 2019-04-26 | 武汉理工大学 | Organic exhaust gas high temperature pyrolysis device |
| CN111366677A (en) * | 2020-04-15 | 2020-07-03 | 华南理工大学 | SCR catalyst performance evaluation device for removing nitric oxide, benzene and toluene in cooperation |
| CN117110172A (en) * | 2023-10-24 | 2023-11-24 | 中国矿业大学 | Gas seepage start pressure gradient testing device and application method |
| CN117110172B (en) * | 2023-10-24 | 2024-01-19 | 中国矿业大学 | Gas seepage start pressure gradient testing device and application method |
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