CN115452495A - Chemical reaction device for preparing carbon-14 sample in water - Google Patents
Chemical reaction device for preparing carbon-14 sample in water Download PDFInfo
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- CN115452495A CN115452495A CN202110635267.8A CN202110635267A CN115452495A CN 115452495 A CN115452495 A CN 115452495A CN 202110635267 A CN202110635267 A CN 202110635267A CN 115452495 A CN115452495 A CN 115452495A
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- carbon
- water
- chemical reaction
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- reation kettle
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- OKTJSMMVPCPJKN-NJFSPNSNSA-N Carbon-14 Chemical compound [14C] OKTJSMMVPCPJKN-NJFSPNSNSA-N 0.000 title claims abstract description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052799 carbon Inorganic materials 0.000 abstract description 20
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 20
- 239000004408 titanium dioxide Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910021386 carbon form Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a chemical reaction device for preparing a carbon-14 sample in water, which comprises a reaction kettle, wherein the top of the reaction kettle is connected with an absorption bottle through a glass guide tube, the top of the reaction kettle is connected with a multi-position valve through a pipeline, the multi-position valve is connected with a diaphragm through a pipeline, the diaphragm pump is connected with a parallel reagent bottle, an outer sleeve is sleeved outside the reaction kettle, the upper part of the reaction kettle is connected with a cover opening device, the lower part of the reaction kettle is connected with a centrifugal pump through a pipeline, the centrifugal pump is connected with a water sample containing barrel through a pipeline, the bottom of the water sample containing barrel is provided with a silt-preventing suction pendant, the lower part of the reaction kettle is connected with a valve, the valve is connected with the centrifugal pump through a pipeline, the lower part of the reaction kettle is also connected with a check valve, the check valve is connected with a gas flow meter through a pipeline, the gas flow meter is connected with a nitrogen bottle, and the bottom of the reaction kettle is connected with a heating device. The beneficial effects are that: the device can greatly improve the conversion of organic carbon and inorganic carbon into CO 2 To facilitate more absorption of CO 2 。
Description
Technical Field
The invention belongs to a chemical reaction device, and particularly relates to a chemical reaction device for preparing a carbon-14 sample in water.
Background
There are mainly 3 sources of carbon-14 in water: 1. CO in the atmosphere 2 Dissolving the inorganic carbon into seawater and lake water through air-water interface exchange to form dissolved inorganic carbon; 2. dissolving organic carbon; 3. the granular organic matter exists mostly in the form of dissolved inorganic carbon. The carbon content in the water body in the natural environment is low, about 20L of water sample is consumed for collecting a sample of carbon-14, so a large reaction kettle is needed for the Fenton oxidation reaction to oxidize carbon in various forms to form CO 2 Absorbed by sodium hydroxide lye under the carrying of nitrogen.
The Fenton oxidation method is widely applied to the aspect of removing Chemical Oxygen Demand (COD) in domestic sewage, and mainly oxidizes reducing substances in water into small molecules to be discharged into the air, so that the aim of removing the COD and ammonia nitrogen is fulfilled. It is also reasonably feasible to use this process for the production of carbon-14 in water, but sometimes carbon recovery is not high, and carbon conversion to CO in water is often the case due to limitations in the use of only fenton oxidation 2 The efficiency of (2) is 90%, and sometimes, the efficiency depends on the degree of difficulty in decomposition of organic substances in water, and thus, the efficiency is limited. Therefore, it is urgently needed to develop a high-efficiency chemical reaction device for carbon-14 in water so as to improve the conversion efficiency of carbon-14 in water.
Disclosure of Invention
The invention aims to provide a chemical reaction device for preparing a carbon-14 sample in water, which can effectively improve the carbon conversion efficiency.
The technical scheme of the invention is as follows: the utility model provides a preparation carbon-14 sample chemical reaction unit in water, includes reation kettle, reation kettle's top pass through the glass pipe and be connected with the absorption bottle, reation kettle's top pass through the pipeline and be connected with many valves, many valves pass through the pipeline and are connected with the diaphragm, the diaphragm pump is connected with parallelly connected reagent bottle, reation kettle's outside cover be equipped with the overcoat, reation kettle's upper portion is connected with the device of uncapping, reation kettle's lower part has the centrifugal pump through the pipe connection, the centrifugal pump has flourishing water appearance bucket through the pipe connection, the bottom of flourishing water appearance bucket is provided with prevents that silt inhales the pendant, reation kettle's sub-unit connection has the valve, the valve passes through the pipeline and is connected with the centrifugal pump, check valve is still connected to reation kettle's lower part, the check valve passes through the pipeline and is connected with gas flowmeter, gas flowmeter is connected with the nitrogen cylinder, reation kettle's bottom is connected with heating device.
The inside water sample agitating unit that is provided with of reation kettle, inside ultraviolet ray generating device and the supersonic generator of being provided with of reation kettle.
The parallel reagent bottles are 4 reagent bottles connected in parallel.
The cover opening device is of a hand-held pressure type structure.
The reaction kettle 14 is of a wide-mouth stirring structure.
The absorption bottles are three absorption bottles connected in series.
The outer sleeve is of a double-layer stainless steel structure.
The ultrasonic generators are arranged in a symmetrical array.
The ultraviolet generating devices are symmetrically arranged.
The two ultraviolet generating devices are respectively positioned between the two ultrasonic generators.
The invention has the beneficial effects that: the device can greatly improve the conversion of organic carbon and inorganic carbon into CO 2 Facilitating more absorption of CO 2 。
Drawings
FIG. 1 is a schematic diagram of a chemical reaction apparatus for preparing a carbon-14 sample in water according to the present invention;
FIG. 2 is a schematic view of a wide-mouth stirred tank reactor;
FIG. 3 is a schematic view of the internal structure of a wide-mouth stirring reaction kettle.
In the figure, a reagent bottle is connected in parallel 1, a diaphragm pump is connected in parallel 2, a multi-position valve is connected in parallel 3, a water sample barrel is connected in parallel 4, a silt suction preventing pendant is connected in parallel 5, a nitrogen gas bottle is connected in parallel 6, a gas flowmeter is connected in parallel 7, a centrifugal pump is connected in parallel 8, a check valve is connected in parallel 9, a valve is connected in parallel 10, a heating device is connected in parallel 11, a centrifugal pump is connected in parallel 12, a cover opening device is connected in parallel 13, a reaction kettle is connected in parallel 14, an absorption bottle is connected in parallel 15, a glass guide tube is connected in parallel 17, a water sample stirring device is connected in parallel 18, an ultrasonic generator is connected in parallel 19, and an ultraviolet generating device is connected in parallel 20.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Because the carbon exists in a plurality of forms in the water sample, the device can convert the carbon into the carbon dioxide to the utmost extent for guaranteeing. The invention uses ultrasonic cavitation; the contact mode of ultrasonic energy and reaction substances mainly exists in an ultrasonic cavitation mode, the ultrasonic wave converts electric energy into sound energy, the sound energy is changed into dense small bubbles in the propagation process, thousands of small bubbles are rapidly burst to form strong shearing force, organic macromolecular compounds can be decomposed into small molecules, and further oxidation-reduction reaction is carried out; utilizing ultraviolet light and titanium dioxide; titanium dioxide belongs to an n-type semiconductor material, and when the titanium dioxide is irradiated by ultraviolet light, the valence band (+) of the titanium dioxide obtains photons to be a conduction band (-), and a photogenerated electron (e) is formed - ) The original valence band forms a photogenerated hole (h) + ) Each titanium dioxide becomes a short-circuited electrochemical cell, and organic macromolecules adsorbed on the surface of the titanium dioxide are oxidized or H 2 O、OH - Is oxidized into OH, and because OH has strong oxidizing property, most of organic carbon and inorganic carbon in water can be oxidized into CO 2 、H 2 And (O). The conversion efficiency of carbon can be greatly improved by ultrasonic cavitation, the combined action of ultraviolet rays and titanium dioxide and finally the Fenton oxidation method.
As shown in fig. 1-3, a chemical reaction device for preparing carbon-14 sample in water comprises a parallel reagent bottle 1, a diaphragm pump 2, a multi-position valve 3, a water sample containing barrel 4, a silt-proof suction pendant 5, a nitrogen gas bottle 6, a gas flowmeter 7, a centrifugal pump 8, a check valve 9, a valve 10, a heating device 11, a centrifugal pump 12, a cover opening device 13, a reaction kettle 14, a serial absorption bottle 15, a glass guide tube 16 and an outer sleeve 17, the top of the reaction kettle 14 is connected with the absorption bottle 15 through the glass guide tube 16, the reaction kettle 14 is of a wide-mouth stirring structure, the top of the reaction kettle 14 is connected with the multi-position valve 3 through a pipeline, the multi-position valve 3 is connected with the diaphragm pump 2 through a pipeline, the diaphragm pump 2 is connected with the parallel reagent bottle 1, the parallel reagent bottle 1 is connected in parallel with 4 reagent bottles, the outer sleeve 17 of the reaction kettle 14 is of a double-layer stainless steel structure, the upper part of the reaction kettle 14 is connected with the cover opening device 13, the cover opening device 13 is of a handheld pressure type structure, the lower part of the reaction kettle 14 is connected with the check valve 9 through a pipeline, the centrifugal pump 12, the pendant-proof suction pendant 9 is connected with the water sample containing tank 10, the centrifugal pump 7 is connected with the check valve 10, the nitrogen gas flowmeter 11, the reaction kettle 9 is connected with the water sample containing suction pendant-proof suction pipeline, the centrifugal pump 11 is connected with the check valve 9, the nitrogen gas flowmeter 9, the reaction kettle 14 through the check valve 11.
As shown in fig. 3, a water sample stirring device 18 is disposed inside the reaction kettle 14, four symmetrically arranged ultrasonic generators 19 are disposed inside the reaction kettle 14, two symmetrically arranged ultraviolet generating devices 20 are disposed inside the reaction kettle 14, and the two ultraviolet generating devices 20 are respectively located between the two ultrasonic generators 19.
The invention adds two working modules of a symmetrical array ultrasonic generator, a symmetrical ultraviolet generating device and the like, and takes titanium dioxide as a catalyst to improve the conversion efficiency of carbon in water.
The chemical reaction generating unit is improved, two pairs of symmetrical array ultrasonic generators are added around the position 40cm away from the bottom of the reaction kettle, and equal distribution is guaranteed; a pair of symmetrical ultraviolet generating devices are added to ensure that the ultraviolet generating devices are symmetrically distributed on two sides, and the ultrasonic generator and the ultraviolet generating devices are independently regulated and controlled.
The using process of the invention is as follows:
1) After the water sample is put into the sample, starting an ultrasonic generator, carrying out ultrasonic treatment on the water sample for half an hour, and decomposing organic macromolecules and molecules which are difficult to degrade into micromolecules;
2) The ultraviolet generator and titanium dioxide are used as catalysts, the ultraviolet generator (with the wavelength less than or equal to 388 nm) is started after the ultrasonic treatment is finished, the water sample is continuously stirred, and the electrochemical cell formed by titanium dioxide is used for absorbing organic matters and H 2 O、OH - Oxidizing to OH, oxidizing carbon to CO under the action of OH free radical 2 、H 2 O。
3) Then further carrying out advanced oxidation reaction by using a Fenton oxidation method to convert all carbon forms into CO 2 And the conversion efficiency is further improved.
Claims (10)
1. A chemical reaction device for preparing a carbon-14 sample in water is characterized in that: including reation kettle, reation kettle's top be connected with the absorption bottle through the glass pipe, reation kettle's top be connected with many valves through the pipeline, many valves pass through the pipeline and are connected with the diaphragm, the diaphragm pump is connected with parallelly connected reagent bottle, reation kettle's outside cover be equipped with the overcoat, reation kettle's upper portion is connected with the device of uncapping, reation kettle's lower part has the centrifugal pump through the pipe connection, the centrifugal pump has flourishing water appearance bucket through the pipe connection, the bottom of flourishing water appearance bucket is provided with prevents that silt inhales the pendant, reation kettle's sub-unit connection has the valve, the valve passes through the pipeline and is connected with the centrifugal pump, reation kettle's lower part still connects the check valve, the check valve passes through the pipeline and is connected with gas flowmeter, gas flowmeter is connected with the nitrogen cylinder, reation kettle's bottom is connected with heating device.
2. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1, wherein: the inside water sample agitating unit that is provided with of reation kettle, inside ultraviolet ray generating device and the supersonic generator of being provided with of reation kettle.
3. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1 or 2, wherein: the parallel reagent bottles are 4 reagent bottles connected in parallel.
4. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1 or 2, wherein: the cover opening device is of a hand-held pressure type structure.
5. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1 or 2, wherein: the reaction kettle 14 is of a wide-mouth stirring structure.
6. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1 or 2, wherein: the absorption bottles are three absorption bottles connected in series.
7. A chemical reaction apparatus for preparing a carbon-14 sample in water according to claim 1 or 2, wherein: the jacket is of a double-layer stainless steel structure.
8. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 2, wherein: the ultrasonic generators are arranged in a symmetrical array.
9. A chemical reaction apparatus for preparing a carbon-14 sample in water according to claim 2, wherein: the ultraviolet generating devices are symmetrically arranged.
10. A chemical reaction apparatus for preparing a carbon-14 sample in water according to claim 9, wherein: the two ultraviolet generating devices are respectively positioned between the two ultrasonic generators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110635267.8A CN115452495A (en) | 2021-06-08 | 2021-06-08 | Chemical reaction device for preparing carbon-14 sample in water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110635267.8A CN115452495A (en) | 2021-06-08 | 2021-06-08 | Chemical reaction device for preparing carbon-14 sample in water |
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| CN115452495A true CN115452495A (en) | 2022-12-09 |
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| CN202110635267.8A Pending CN115452495A (en) | 2021-06-08 | 2021-06-08 | Chemical reaction device for preparing carbon-14 sample in water |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080050316A (en) * | 2006-12-01 | 2008-06-05 | 일진방사선 엔지니어링 (주) | Treatment method of refractory organic compounds in industrial liquid waste water and an apparatus of such a treatment therefor |
| CN203732348U (en) * | 2014-03-17 | 2014-07-23 | 苏州热工研究院有限公司 | Sample preparation device for measuring carbon-14 in environmental water |
| CN205176043U (en) * | 2015-11-14 | 2016-04-20 | 中国科学院合肥物质科学研究院 | Water sample automatic acquisition and digestion instrument |
| CN205501072U (en) * | 2016-04-12 | 2016-08-24 | 马鞍山师范高等专科学校 | Multipotency field reactor of degradation phenol wastewater |
| CN205740430U (en) * | 2016-06-07 | 2016-11-30 | 徐州工程学院 | The device of Ultrasound-assisted photocatalytic degradation organic wastewater |
| CN112573624A (en) * | 2021-03-01 | 2021-03-30 | 山东锐海环境科技有限公司 | High-salinity wastewater composite catalytic oxidation treatment system |
| CN217638234U (en) * | 2021-06-08 | 2022-10-21 | 中核核电运行管理有限公司 | Chemical reaction device for preparing carbon-14 sample in water |
-
2021
- 2021-06-08 CN CN202110635267.8A patent/CN115452495A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20080050316A (en) * | 2006-12-01 | 2008-06-05 | 일진방사선 엔지니어링 (주) | Treatment method of refractory organic compounds in industrial liquid waste water and an apparatus of such a treatment therefor |
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| CN205176043U (en) * | 2015-11-14 | 2016-04-20 | 中国科学院合肥物质科学研究院 | Water sample automatic acquisition and digestion instrument |
| CN205501072U (en) * | 2016-04-12 | 2016-08-24 | 马鞍山师范高等专科学校 | Multipotency field reactor of degradation phenol wastewater |
| CN205740430U (en) * | 2016-06-07 | 2016-11-30 | 徐州工程学院 | The device of Ultrasound-assisted photocatalytic degradation organic wastewater |
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Non-Patent Citations (1)
| Title |
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