CN206504968U - VOCs adsorption/desorptions test device and VOCs measuring systems - Google Patents
VOCs adsorption/desorptions test device and VOCs measuring systems Download PDFInfo
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- CN206504968U CN206504968U CN201720159692.3U CN201720159692U CN206504968U CN 206504968 U CN206504968 U CN 206504968U CN 201720159692 U CN201720159692 U CN 201720159692U CN 206504968 U CN206504968 U CN 206504968U
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Abstract
The utility model provides a kind of VOCs adsorption/desorptions test device and VOCs measuring systems, is related to the technical field of measurement analysis, including the first cover body and the second cover body；Flowmeter and first heater are provided with first cover body；Provided with electronic balance and the adsorption column being arranged on the electronic balance in second cover body；Gas passes sequentially through the flowmeter, the first heater, the adsorption column by pipeline.The technology for evaluating measurement apparatus without easy VOCs absorption and desorption in the prior art is alleviated to ask.
Description
Technical field
The utility model is related to measurement analysis technical field, more particularly, to a kind of VOCs adsorption/desorptions test device and
VOCs measuring systems.
Background technology
VOCs is VOC (volatile organic compounds) english abbreviation.Its definition has
Several kinds, for example, VOC is defined as any to participate in organising for atmospheric photochemical reaction by U.S.'s ASTM D3960-98 standards
Compound.The definition of Environmental Protection Administration of the United States Federal (EPA)：VOC is to remove CO, CO2, H2CO3, metal carbides, gold
Belong to outside carbonate and ammonium carbonate, any carbon compound for participating in atmospheric photochemical reaction.The World Health Organization (WHO, 1989) is right
The definition of TOVC (TVOC) is that less than room temperature, volatility of the boiling point between 50~260 DEG C has fusing point
The general name of machine compound.About the international standard ISO 4618/1-1998 and Germany DIN of paint and varnish generic term
Definition of the 55649-2000 standards to VOC be, in principle, at normal temperatures and pressures, it is any can spontaneous volatilization organic liquid and/
Or solid.Meanwhile, German DIN 55649-2000 standards have been done a restriction, i.e., generally pressed again when determining VOC content
Under the conditions of power, any organic compound of boiling point or initial boiling point less than or equal to 250 DEG C.BASF AG then thinks, most convenient
It is to define which material belongs to VOC according to boiling point with most common method, and most common common recognition thinks that VOC refers to that those boil
Chemical substance of the point equal to or less than 250 DEG C.
It is easy to cause acute poisoning during Volatile Organic Compounds in Indoor Air excessive concentration, head occurs in the lighter
Bitterly, dizzy, cough, Nausea and vomiting or in dead drunk liquor-saturated shape；Hepatotoxicity occurs or even goes into a coma quickly, and what is had there may also be life in severe one
Critically ill danger.As in terms of atmosphere pollution prevention and control, VOCs prevention and control have turned into one of bottleneck of improvement air quality, current China
VOCs monitoring methods system, which still has, much needs perfect aspect, although many research institutions and the environmental monitoring mechanism in place have
Compare good technical foundation, but not yet carry out the routine monitoring to air VOCs.
The technology for adsorbing and being desorbed evaluation measurement apparatus without easy VOCs in the prior art is asked.
Utility model content
The purpose of this utility model is to provide a kind of VOCs adsorption/desorptions test device and VOCs measuring systems, to alleviate
Adsorb and be desorbed without easy VOCs in the prior art and evaluate the technology of measurement apparatus and ask.
The VOCs adsorption/desorption test devices that the utility model is provided, including：First cover body and the second cover body；
Flowmeter and first heater are provided with first cover body；
Provided with electronic balance and the adsorption column being arranged on the electronic balance in second cover body；
In use, gas passes sequentially through the flowmeter, the first heater and the adsorption column by pipeline.
Further, the first heater include far-infrared heating tube and quartz ampoule, the far-infrared heating tube around
The outer wall of the far-infrared heating tube is set in the shape of a spiral.
Further, the porch of the flowmeter is provided with the first control valve, and the exit of the flowmeter is provided with second
Control valve.
Further, second control valve is triple valve, and the outlet of the entrance of the triple valve and the flowmeter connects
Connect, the outlet of the triple valve is connected with the entrance of the quartz ampoule and the entrance of waste gas recovering device respectively.
Further, secondary heating mechanism is provided with second cover body.
Further, the electronic balance is provided with the support block for being used for fixing the adsorption column.
Further, the first thermometer and second temperature meter are respectively equipped with first cover body and second cover body.
Further, the pipeline is set to polyfluortetraethylene pipe.
Further, the porch of the flowmeter is provided with pressure sensor.
The utility model additionally provides a kind of VOCs measuring systems, including described VOCs adsorption/desorption test devices.
What the utility model was brought has the beneficial effect that：
The VOCs adsorption/desorption test devices that the utility model is provided, including：First cover body and the second cover body；First cover body
It is interior to be provided with flowmeter and first heater；Provided with electronic balance and the adsorption column being arranged on electronic balance in second cover body；
Gas passes sequentially through flowmeter, first heater, adsorption column by pipeline.In use, can be by by first heater
Gas is heated, and can control the amount that gas is added by flowmeter, when VOCs is by adsorption column, portion gas stays in adsorption column
It is interior, by electronic balance, adsorption column can be weighed front and rear weight change is passed through in gas, so as to measure gas flow
With the different influences to absorption property of temperature.During desorption, it is passed through with vapours or heated nitrogen etc. in test device, with
Desorption is carried out, and is changed over time adsorption column weight and is diminished, by electronic balance, can weigh adsorption column and be passed through in desorption gas
Front and rear weight change.So as to measure the difference of gas flow and temperature to VOCs absorption and the influence of desorption performance.
In addition, the utility model additionally provides a kind of VOCs measuring systems, including described VOCs adsorption/desorptions test dress
Put.The VOCs measuring systems of the VOCs adsorption/desorption test devices provided using the utility model, can measure suction by weighing
Attached column is passed through front and rear weight change in gas, measures the different influences to absorption property of gas flow and temperature.So as to
To measure the difference of gas flow and temperature to VOCs absorption and the influence of desorption performance.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation for the VOCs adsorption/desorption test devices that Fig. 1 provides for the utility model embodiment；
The structural representation for the first heater that Fig. 2 provides for the utility model embodiment；
The structural representation for the quartz ampoule that Fig. 3 provides for the utility model embodiment；
Fig. 4 is the sectional view shown in Fig. 3；
Fig. 5 is abatement stress to electronic balance result of the test.
Icon：The cover bodies of 1- first；The cover bodies of 2- second；11- flowmeters；12- first heaters；The cover bodies of 13- first
Entrance；The cover outlets of 14- first；The control valves of 15- first；The thermometers of 16- first；17- waste gas recovering devices；18- second
Control valve；21- electronic balances；22- adsorption columns；The cover inlets of 23- second；The cover outlets of 24- second；26- second is heated
Device；27- second temperature meters；28- bend pipes；121- far-infrared heating tubes；122- quartz ampoules；211- support blocks.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
The structural representation for the VOCs adsorption/desorption test devices that Fig. 1 provides for the utility model embodiment；Fig. 2 is this reality
The structural representation of the first heater provided with new embodiment；The quartz ampoule that Fig. 3 provides for the utility model embodiment
Structural representation；Fig. 4 is the sectional view shown in Fig. 3.Fig. 5 is abatement stress to electronic balance result of the test.
Embodiment one
As Figure 1-4, the VOCs adsorption/desorption test devices that the utility model is provided, including：First cover body 1 and
Two cover bodies 2；Flowmeter 11 and first heater 12 are provided with first cover body 1；Electronic balance 21 is provided with second cover body 2 and is set
Put the adsorption column 22 on electronic balance 21；In use, gas passes sequentially through flowmeter 11, first heater by pipeline
12nd, adsorption column 22.
In use, can heat gas by first heater 12, gas can be controlled to add by flowmeter 11
Amount, when VOCs gases are by adsorption column 22, portion gas is stayed in adsorption column 22, by electronic balance 21, can be weighed
Adsorption column 22 is passed through front and rear weight change in gas, so as to measure the difference of gas flow and temperature to absorption property
Influence.During desorption, it is passed through with vapours or heated nitrogen etc. in test device, as desorption is carried out, changes over time absorption
The weight of post 22 diminishes, by electronic balance, can weigh adsorption column 22 and front and rear weight change is passed through in desorption gas.So as to
The difference of gas flow and temperature can be measured to VOCs absorption and the influence of desorption performance.
It should be noted that the first cover inlet 13 and the first cover outlet 14 are respectively equipped with the first cover body 1, the second cover
The second cover inlet 23 and the second cover outlet 24 are respectively equipped with body 2.
It can be connected on pipeline between first cover outlet 14 and the second cover inlet 23 by hard pipe joint.
In the utility model flowmeter 11 can be gas flow and, gas flowmeter 11 is the instrument of meter gaseous flow
Table.The gas flow flowed through is recorded in pipeline.
In the alternative of the present embodiment, first heater 12 includes far-infrared heating tube 121 and quartz ampoule 122, far
Infrared heating pipe 121 is set in the shape of a spiral around the outer wall of far-infrared heating tube 121.
Can be by gas in use, being set in the shape of a spiral around the outer wall of far-infrared heating tube 121 by far-infrared heating tube 121
Body is heated, and can control the amount that gas is added by flowmeter 11, when gas is by adsorption column 22, portion gas stays in adsorption column
In 22, by electronic balance 21, adsorption column 22 can be weighed front and rear weight change is passed through in gas, so as to measure gas
The different influences to absorption property of body flow and temperature.
Far-infrared heating tube 121 is to employ the milky white quartz glass tube processed through special process, adapted resistance condensation material
As heating, because alabaster silica glass can absorb the most visible ray and near-infrared that are radiated from heating wire
Light and it can be allowed to be converted into far infrared radiation.But current industrial infrared ray heating tube has eliminated white quartz pipe substantially
122, because its material is more crisp, therefore very long milky heating tube can not be formed.And milky has light-shading effect, it is prevented
Heat.
Far-infrared heating tube 121 has high density, high thermal effect, the distinguishing feature of low energy consumption.Heating is used as by the use of this pipe
The firing equipments such as heater, the baking oven drying tunnel of element can greatly improve operating efficiency than common infrared heating, shorten heating week
Phase, save equipment and taken up space, save the energy, reduce production cost.
In the present embodiment, far-infrared heating tube 121 can also use infrared ray heating tube or carbon fiber heating tube to replace.
Infrared ray heating tube is the tubular heater using infrared ray principle.It has that the best in quality, thermal efficiency is high, power
Density is big, heating is rapid, power saving, long lifespan the features such as.
The energy radiation pattern of carbon fiber-quartz electric heating tube is that based on far infrared radiation, wherein far infrared radiation efficiency reaches
To more than 70%.Carbon fiber-quartz electric heating tube is after energization, and can give off can be with the infrared energy of heated material.It is remote red
UV radiation heats a length of 2.3--14 μm of the heat wave of fluorescent tube, is mainly used in HIGH INFRARED HEATING TECHNIQUE, with highly dense
Degree, high-energy, high-strength radiation mode are adapted to modern production process high yield, the requirement of high-quality to workpiece heat.
Adsorption column 22 is hollow cylinder structure, it is internal have an insertion thereon, the exhaust passage of lower surface, inside is equipped with
The adsorbent of VOCs gases can be adsorbed.
In the alternative of the present embodiment, adsorption column 22 is active carbon adsorption column 22.The coconut husk of 14~25 mesh can be selected
Activated carbon is the flanged (FLGD) steel pipe in two ends of filling activated carbon as adsorbent, adsorption column 22, and material is stainless steel.
In the alternative of the present embodiment, it is respectively equipped with and renovates on the first cover body 1 and the second cover body 2, can beat and open or close
The upper cover body 2 of first cover body 1 or second.
Be respectively equipped with and renovate on first cover body 1 and the second cover body 2, can facilitate connecting line in experimentation, open or
Person closes the first control valve 15 or the second control valve 18, changes the operation such as adsorption column 22.
First cover body 1 can the second cover body 2 can be lucite material.
In the alternative of the present embodiment, the porch of flowmeter 11 is provided with the first control valve 15, the outlet of flowmeter 11
Place is provided with the second control valve 18.
First control valve 15 and the control valve that the second control valve 18 is control gas flow.
In the alternative of the present embodiment, the first control valve 15 and second people's control valve are magnetic valve.
Magnetic valve is the industrial equipment with Electromagnetic Control, is the automatic foundamental element for controlling fluid, belongs to execution
Device, however it is not limited to hydraulic pressure, pneumatic.Direction, flow, speed and the other parameters of medium are adjusted in industrial control system.
Magnetic valve can coordinate different circuits to realize expected control, and the precision and flexibility that control can ensure.Electromagnetism
Valve has many kinds, and different magnetic valves play a role in the diverse location of control system, most commonly check valve, safety valve,
Directional control valve, speed-regulating valve etc..
In the alternative of the present embodiment, the second control valve 18 is triple valve, the entrance of triple valve and going out for flowmeter 11
Mouth connection, the outlet of triple valve is connected with the entrance of quartz ampoule 122 and the entrance of waste gas recovering device 17 respectively.
The entrance of triple valve is connected with the outlet of flowmeter 11, the outlet of triple valve respectively with the entrance of quartz ampoule 122 and
The entrance connection of waste gas recovering device 17.When needing to think to be passed through gas in adsorption column 22, the first control valve 15 is opened, three are opened
The mouth that port valve is connected with the entrance of quartz ampoule 122, closes the mouth being connected with waste gas recovering device 17.When gas need not be passed through
When, the first control valve 15 can be closed, the mouth that triple valve is connected with the entrance of quartz ampoule 122 is closed, opens and is filled with waste gas recovery
17 connected mouths are put, gas is reclaimed, prevent from polluting environment.
It can be connected between the outlet of triple valve and waste gas recovering device 17 by hard pipe joint.
Waste gas recovering device 17 can be waste gas bag.
In the alternative of the present embodiment, secondary heating mechanism 26 is provided with the second cover body 2.
Secondary heating mechanism 26 can be electric heating tube.Electric heating tube be tubular electrothermal element it be by metal tube helical form
The composition such as resistance wire and crystal magnesium oxide powder.High temperature resistance silk is evenly distributed in stainless steel seamless pipe, in gap
Heat conductivility and insulating properties good crystal magnesium oxide powder are inserted, structure is not only advanced, and the thermal efficiency is high, and heating is uniform, high
Have in warm resistance wire electric current by when, the heat of generation is spread by magnesia powder to metal tube surface, then is delivered in air,
Reach the purpose of heating.
In the alternative of the present embodiment, secondary heating mechanism 26 is bulb or far-infrared heating tube 121.
In the alternative of the present embodiment, electronic balance 21 is provided with the support block 211 for being used for fixing adsorption column 22.
Electronic balance 21 is provided with the support block 211 for being used for fixing adsorption column 22, adsorption column 22 is stably fixed to electricity
On sub- balance 21, make weighing more stable.
In the alternative of the present embodiment, the first thermometer 16 and second is respectively equipped with the first cover body 1 and the second cover body 2
Thermometer 27.
First thermometer 16 can be used for detecting the temperature in the first cover body 1, investigate influence of the environment temperature to absorption.
Second temperature meter 27 is used to monitor the temperature in the first cover body 1.
The setting of first thermometer 16 and second temperature meter 27, convenient record temperature data, is convenient for post analysis.
It should be noted that when being desorbed with vapours or heated nitrogen, general temperature in 80-200 degree, with
Desorption is carried out, and is diminished with the weight of time adsorption column 22.By the setting of the first thermometer 16 and second temperature meter 27, it is easy to control
Temperature in first cover body 1 and the second cover body 2, also allows for recording temperature change, to VOCs absorption and the influence of desorption performance.
The first thermometer 16 and second temperature meter 27 are digital thermometer in the alternative of the present embodiment.
Digital thermometer can accurately judge and measurement temperature, with numerical monitor, recording process is more facilitated.
In the alternative of the present embodiment, pipeline is set to polyfluortetraethylene pipe.
Polyfluortetraethylene pipe has reliable excellent corrosion resistance, and chemical stability is good, is resistant to all strong acid, highly basic, strong
Oxidant, does not also have an effect with various organic solvents.
In the alternative of the present embodiment, the porch of flowmeter 11 is provided with pressure sensor.
Pressure sensor can be used for monitoring pressure of gas when being passed through, in use, carry can be with controller for pressure sensing
Electrical connection.
It should be noted that bend pipe 28 is can cut down the pipeline that stress influences on electronic balance, as shown in figure 5, electronics
The reading of balance is Y, and pure water dosage is x, can be drawn by Fig. 5, Y=1.0047x-0.0173, connecting tube stress influence is small
In 0.1g, abatement stress influences the use of bend pipe to influence very little to experimental result on electronic balance, meets application requirement.Using curved
Pipe 28 can eliminate influence of the pipe stress to experimental result.
Embodiment two
The utility model additionally provides a kind of VOCs measuring systems, including VOCs adsorption/desorption test devices.
The utility model additionally provides a kind of VOCs measuring systems, including described VOCs adsorption/desorption test devices.Make
The VOCs measuring systems of the VOCs adsorption/desorption test devices provided with the utility model, can measure adsorption column 22 by weighing
Front and rear weight change is passed through in gas, the different influences to absorption property of gas flow and temperature are measured.So as to survey
Go out the difference of gas flow and temperature to VOCs absorption and the influence of desorption system.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
1. a kind of VOCs adsorption/desorptions test device, it is characterised in that including：First cover body and the second cover body；
Flowmeter and first heater are provided with first cover body；
Provided with electronic balance and the adsorption column being arranged on the electronic balance in second cover body；
In use, gas passes sequentially through the flowmeter, the first heater and the adsorption column by pipeline.
2. VOCs adsorption/desorptions test device according to claim 1, it is characterised in that the first heater includes
Far-infrared heating tube and quartz ampoule, the far-infrared heating tube are set in the shape of a spiral around the outer wall of the far-infrared heating tube.
3. VOCs adsorption/desorptions test device according to claim 2, it is characterised in that the porch of the flowmeter is set
There is the first control valve, the exit of the flowmeter is provided with the second control valve.
4. VOCs adsorption/desorptions test device according to claim 3, it is characterised in that second control valve is threeway
Valve, the entrance of the triple valve is connected with the outlet of the flowmeter, the triple valve outlet respectively with the quartz ampoule
The entrance connection of entrance and waste gas recovering device.
5. VOCs adsorption/desorptions test device according to claim 1, it is characterised in that provided with the in second cover body
Two heaters.
6. VOCs adsorption/desorptions test device according to claim 1, it is characterised in that the electronic balance is provided with use
In the support block of the fixed adsorption column.
7. VOCs adsorption/desorptions test device according to claim 1, it is characterised in that first cover body and described
The first thermometer and second temperature meter are respectively equipped with two cover bodies.
8. VOCs adsorption/desorptions test device according to claim 1, it is characterised in that the pipeline is set to polytetrafluoro
Ethylene tube.
9. VOCs adsorption/desorptions test device according to claim 1, it is characterised in that the porch of the flowmeter is set
There is pressure sensor.
10. a kind of VOCs measuring systems, it is characterised in that surveyed including the VOCs adsorption/desorptions described in claim any one of 1-9
Trial assembly is put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159692.3U CN206504968U (en) | 2017-02-21 | 2017-02-21 | VOCs adsorption/desorptions test device and VOCs measuring systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159692.3U CN206504968U (en) | 2017-02-21 | 2017-02-21 | VOCs adsorption/desorptions test device and VOCs measuring systems |
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ID=59840252
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108121883A (en) * | 2018-01-12 | 2018-06-05 | 中南民族大学 | The analogy method and device of airborne particulate cutter performance |
| CN108592986A (en) * | 2018-05-10 | 2018-09-28 | 山东省医疗器械产品质量检验中心 | The unimpeded verifying attachment of micropore needle tubing and dressing anthemorrhagic performance in-vitro evaluation system and method |
| CN112540022A (en) * | 2020-12-02 | 2021-03-23 | 中触媒新材料股份有限公司 | High-throughput evaluation device for catalyst and adsorbent and application method |
-
2017
- 2017-02-21 CN CN201720159692.3U patent/CN206504968U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108121883A (en) * | 2018-01-12 | 2018-06-05 | 中南民族大学 | The analogy method and device of airborne particulate cutter performance |
| CN108592986A (en) * | 2018-05-10 | 2018-09-28 | 山东省医疗器械产品质量检验中心 | The unimpeded verifying attachment of micropore needle tubing and dressing anthemorrhagic performance in-vitro evaluation system and method |
| CN112540022A (en) * | 2020-12-02 | 2021-03-23 | 中触媒新材料股份有限公司 | High-throughput evaluation device for catalyst and adsorbent and application method |
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