CN214667987U - Adsorption tube storage device for collecting volatile organic compounds - Google Patents
Adsorption tube storage device for collecting volatile organic compounds Download PDFInfo
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- CN214667987U CN214667987U CN202120122538.5U CN202120122538U CN214667987U CN 214667987 U CN214667987 U CN 214667987U CN 202120122538 U CN202120122538 U CN 202120122538U CN 214667987 U CN214667987 U CN 214667987U
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- China
- Prior art keywords
- tube storage
- adsorption tube
- air guide
- storage unit
- box body
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 67
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000005192 partition Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000012856 packing Methods 0.000 claims abstract description 5
- 239000002594 sorbent Substances 0.000 claims description 9
- 239000002274 desiccant Substances 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims 2
- 230000004888 barrier function Effects 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 30
- 229910052799 carbon Inorganic materials 0.000 description 12
- 239000012080 ambient air Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000002912 waste gas Substances 0.000 description 7
- 238000005070 sampling Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000004147 desorption mass spectrometry Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000005377 adsorption chromatography Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model relates to a storage device of an adsorption tube for collecting volatile organic compounds, which comprises a box body and an upper cover which can be connected in a sealing way, wherein a fixed plate and a baffle plate are fixedly connected in the box body, the fixed plate is positioned at the upper position of the baffle plate, and the fixed plate is used for fixing the adsorption tube; a bottom activated carbon layer is arranged in a space enclosed by the partition board and the bottom of the box body; a plurality of through holes are formed in the upper cover, an air guide pipe is hermetically connected to each through hole, an air guide piston cap is further connected to the end portion of each air guide pipe, and an activated carbon packing layer is arranged in each air guide piston cap. The utility model has the advantages of safety and reliability.
Description
Technical Field
The utility model relates to an gather adsorption tube storage device of volatile organic compounds in ambient air or waste gas.
Background
Volatile Organic Compounds (VOCs) are Organic Compounds which have a boiling point of 50-260 ℃, have a saturated vapor pressure of over 133.32KPa at room temperature, and exist in the air as vapor at room temperature. VOCs widely exist in ambient air, are important precursors generated by ozone and secondary organic aerosol, and have important influences on photochemical pollution, atmospheric environmental quality, climate warming, human health and the like. The united states Environmental Protection Agency (EPA) has placed over 50 VOCs on the toxic atmospheric pollutants list. Therefore, monitoring of VOCs in ambient air is particularly important.
Currently, the commonly used methods for determining VOCs include activated carbon tube adsorption/gas chromatography, adsorption tube sampling-thermal desorption/gas chromatography-mass spectrometry, and canister sampling/gas chromatography-mass spectrometry. The adsorption tube is used for collecting VOCs (volatile organic compounds) in a relatively wide sampling mode in recent years, and compared with an air bag method or a tank sampling method for collecting VOCs in ambient air, the adsorption tube has the characteristics of low cost, simplicity in operation, convenience in transportation and carrying, suitability for large-batch sampling and the like.
VOCs in environmental air and the waste gas are gathered to the adsorption tube, because of its filler adsorption efficiency is strong, can be to VOCs passive adsorption in the air of save environment and transportation environment in save and transportation process. Therefore, the environmental industry standard "determination of environmental air volatile organic compounds adsorption tube sampling-thermal desorption/gas chromatography-mass spectrometry (HJ 644-2013)" requires:
(1) after the adsorption tube is aged, the two ends are immediately sealed or put into a special sleeve, and a layer of aluminum foil paper is wrapped outside the special sleeve. The wrapped adsorption tube is placed in a dryer filled with active carbon or active carbon silica gel mixture, and the dryer is placed in a refrigerator without organic reagent, and can be stored at 4 deg.C for 7 days.
(2) After VOCs samples in ambient air and waste gas are collected, the adsorption tube is rapidly taken down, two ends of the adsorption tube are sealed or the adsorption tube is placed into a special sleeve, and a layer of aluminum foil paper is wrapped outside the adsorption tube and is transported to a laboratory for analysis. Samples which could not be analyzed immediately were placed in a desiccator containing activated carbon or a mixture of activated carbon and silica gel, and the desiccator was placed in a refrigerator without organic reagents, stored at 4 ℃ and analyzed within 7 days.
Therefore, the storage of the adsorption tube needs to use a special dryer filled with an active carbon or active carbon silica gel mixture desiccant, and then the adsorption tube is stored in a refrigerator. The desicator is mostly the glass material, and the shape is cylindrical, and the volume is great, places the parking space that needs the refrigerator in the refrigerator great, and for preventing glass breakage, still need place firmly. The utility model provides a new save and gather in ambient air or the waste gas adsorption tube storage device of volatile organic compounds can guarantee that the adsorption tube can not adsorb passively in transportation and save process, and is small again, save space, difficult broken, and the adsorption tube of storage is in large quantity.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides an adsorption tube storage device which is small in size, space-saving, not easy to break, and capable of ensuring that the adsorption tube is not passively adsorbed during transportation and storage, and the quantity of the adsorption tubes is large, and provides a storage method. The technical scheme of the utility model as follows:
an adsorption tube storage device for collecting volatile organic compounds comprises a box body 6 and an upper cover 3 which can be hermetically connected, and is characterized in that a fixing plate 5 and a partition plate 8 are fixedly connected to the box body 6, the fixing plate 5 is located close to the upper position of the partition plate 8, and the fixing plate 5 is used for fixing an adsorption tube; a bottom activated carbon layer 7 is arranged in a space enclosed by the partition plate 8 and the bottom of the box body; a plurality of through holes are formed in the upper cover 3, an air guide tube 2 is hermetically connected to each through hole, an air guide piston cap 1 is further connected to the end portion of each air guide tube, and an activated carbon packing layer is arranged in each air guide piston cap 1.
Further, at least one of the gas lines 2 can be connected to the evacuated line via a matching connection.
Further, the partition 8 includes a mesh layer 14 and a screen 15 connected together.
Further, the screen 15 is divided into two layers, which are respectively disposed on the upper surface and the lower surface of the mesh layer 14.
Further, an open container 9 for placing a desiccant is provided in the sorbent tube storage device.
Further, a deflation valve 11 and a deflation hole 10 are arranged on the box body or the upper cover.
Drawings
Fig. 1 is an overall structure diagram of the adsorption tube storage device for collecting volatile organic compounds in ambient air or waste gas according to the present invention.
Fig. 2 is a side view of the sorbent tube storage device for collecting volatile organic compounds in ambient air or exhaust gas according to the present invention.
The reference numerals are explained below:
1 air guide piston cap 2 air guide tube
3 upper cover 4 jack
5 fixing plate 6 box body
7 bottom active carbon layer 8 clapboard
9 open container with drying agent 10 air vent
11 air release valve 12 clamping holder for fixing plate 5
13 card holder 14 grid layer of baffle 8
15 filter screen
Detailed Description
Referring to fig. 1, the utility model relates to an gather volatile organic compounds's adsorption tube storage device in ambient air or waste gas mainly includes: a box body 6, an upper cover 3, a bottom active carbon layer 7, a fixed plate 5 and a clapboard 8.
A fixing plate 5 is fixedly connected to the middle part of the adsorption tube storage device box body 6, and a plurality of insertion holes 4 for inserting and placing adsorption tubes are distributed on the fixing plate 5. The box body 6 and the upper cover 3 are integrally made of polytetrafluoroethylene materials, so that interfering substances such as volatile organic compounds are not released, a good sealing effect is achieved, and the situation that the substances which are easily adsorbed enter the box body is effectively prevented. The box body is the square, is convenient for leave in the refrigerator and preserve and make things convenient for the sampling transportation, and a plurality of jacks 4 of seting up on the fixed plate are applicable to the save of a plurality of adsorption tubes, and fixed plate 5 is used for fixed adsorption tube, the inconvenience that the transportation after the sampling of being convenient for go out brought.
A clapboard 8 is fixedly connected to the lower part of the box body 6 of the adsorption tube storage device, a bottom activated carbon layer 7 is arranged in a space enclosed by the clapboard 8 and the bottom of the box body, and an open container 9 filled with a drying agent is placed in the space. Bottom activated carbon layer 7 adsorbs the material of being easily adsorbed by the adsorption tube, prevents to pollute the adsorption tube, guarantees that the adsorption tube does not sample passively. The partition plate 8 comprises a grid layer 14 and filter screens 15 respectively arranged on the upper surface and the lower surface of the grid layer 14, so that the pollution of the activated carbon powder to the adsorption tube is effectively prevented; meanwhile, the clapboard has good air permeability, so that the bottom active carbon layer 7 can effectively adsorb and store pollutants in the box. An open container 9 arranged below the partition board is filled with anhydrous silica gel desiccant, so that water vapor in air and condensed water generated when the refrigerator is taken out and put in can be effectively absorbed.
An upper cover 3 is further arranged on the box body of the adsorption tube storage device, a plurality of through holes are formed in the upper cover 3, an air guide tube 2 is hermetically connected to each through hole, and the air guide tube 2 can be connected with a vacuumized guide tube. The upper cover of the adsorption tube storage device is made of polytetrafluoroethylene, and sealing strips are added to ensure the sealing performance of the storage device.
In order to prevent the overflow of trace toxic and harmful gases in the storage device of the adsorption tube and prevent the passive adsorption of the adsorption tube in the sample storage and transportation processes, an air guide piston cap 1 is also arranged on each air guide tube 2. A trace active carbon packing layer is arranged in the air guide piston cap 1 and used for adsorbing a trace amount of toxic and harmful gas overflowing from the storage device of the adsorption tube and preventing secondary pollution to the environment.
In order to achieve better storage and transportation reliability of the adsorption tubes, after the upper cover 3 is closed, the whole box body 6 and the upper cover 3 are in a sealing state, a certain air guide piston cap 1 can be opened, and a vacuum pump is used for vacuumizing the adsorption tube storage device through the air guide tube 2.
The fixing plate 5 and the partition plate 8 are respectively supported by the clamping support 12 of the fixing plate 5 and the clamping support 13 of the partition plate 8, can be freely taken down, and can conveniently and regularly replace the anhydrous silica gel drying agent in the activated carbon layer 7 and the open container 9. The screens 11 on the upper and lower surfaces of the baffle plate 8 can also be replaced at regular intervals.
Specifically, the storage method of the adsorption tube comprises the following steps:
1) after sequentially loading active carbon and a drying agent into the bottom of the adsorption tube storage device, closing the adsorption tube storage device, and extracting vacuum through a certain air duct to reserve the adsorption tube storage device;
2) opening an air release valve, opening an upper cover of the adsorption tube storage device after the adsorption tube storage device releases vacuum through an air release hole, and inserting the adsorption tube of the collected volatile organic compounds into the jack;
3) sealing the upper cover 3, opening a certain air guide piston cap, and vacuumizing the adsorption tube storage device through an air guide tube by using a vacuum pump;
4) after vacuum pumping, covering the air guide piston cap to ensure that the adsorption tube storage device is in a closed state; and then placing the mixture in a refrigerator for refrigeration and preservation.
The utility model discloses an gather in ambient air or the waste gas volatile organic compounds's adsorption tube storage device, with the comparative advantage of traditional save adsorption tube method:
(1) the adsorption tube after the sample collection and the adsorption tube which is aged and ready to be used can be directly stored in an adsorption tube storage device without wrapping a layer of aluminum foil paper, so that the time and the material are saved.
(2) The adsorption tube storage device contains an activated carbon layer and is filled with a drying agent.
(3) The adsorption tube storage device is square and is convenient to store in the refrigerator.
(4) The partition board is a bottom active carbon layer and a cavity partition board provided with an adsorption tube, and a filter screen is added to effectively block the pollution of the active carbon powder to the adsorption tube, ensure good air permeability and enable the active carbon layer to effectively adsorb and store pollutants in the box.
(5) The air guide piston cap is internally provided with a trace active carbon packing layer which adsorbs overflowed trace toxic and harmful gases, thereby improving the safety of transportation.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.
Claims (7)
1. An adsorption tube storage device for collecting volatile organic compounds comprises a box body (6) and an upper cover (3) which can be connected in a sealing manner, and is characterized in that a fixing plate (5) and a partition plate (8) are fixedly connected in the box body (6), the fixing plate (5) is positioned close to the upper position of the partition plate (8), and the fixing plate (5) is used for fixing an adsorption tube; a bottom activated carbon layer (7) is arranged in a space enclosed by the partition plate (8) and the bottom of the box body; a plurality of through holes are formed in the upper cover (3), an air guide pipe (2) is hermetically connected to each through hole, an air guide piston cap (1) is further connected to the end portion of each air guide pipe, and an activated carbon packing layer is arranged in each air guide piston cap (1).
2. A sorbent tube storage unit according to claim 1, wherein at least one of the gas-conducting tubes (2) is connectable to an evacuated conduit via a mating connector.
3. A sorbent tube storage unit in accordance with claim 1, wherein the barrier (8) comprises a mesh layer (14) and a screen (15) joined together.
4. A sorbent tube storage unit in accordance with claim 3 wherein the screen (15) is divided into two layers, one on each of the upper and lower surfaces of the mesh layer (14).
5. A sorbent tube storage unit according to claim 1, wherein an open container (9) for desiccant is provided within the sorbent tube storage unit.
6. A sorbent tube storage unit according to claim 1, wherein a purge valve (11) and a purge hole (10) are provided in the cartridge or the upper cover.
7. A sorbent tube storage unit in accordance with claim 1 wherein a fixed plate (5) is fixedly attached to the cartridge body (6) by a first clip and a baffle plate (8) is fixedly attached to the cartridge body by a second clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120122538.5U CN214667987U (en) | 2021-01-18 | 2021-01-18 | Adsorption tube storage device for collecting volatile organic compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120122538.5U CN214667987U (en) | 2021-01-18 | 2021-01-18 | Adsorption tube storage device for collecting volatile organic compounds |
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| Publication Number | Publication Date |
|---|---|
| CN214667987U true CN214667987U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120122538.5U Expired - Fee Related CN214667987U (en) | 2021-01-18 | 2021-01-18 | Adsorption tube storage device for collecting volatile organic compounds |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816266A (en) * | 2021-01-18 | 2021-05-18 | 天津市生态环境监测中心 | Adsorption tube storage device and method for collecting volatile organic compounds |
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2021
- 2021-01-18 CN CN202120122538.5U patent/CN214667987U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816266A (en) * | 2021-01-18 | 2021-05-18 | 天津市生态环境监测中心 | Adsorption tube storage device and method for collecting volatile organic compounds |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |