CN217638234U - 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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- CN217638234U CN217638234U CN202121269234.8U CN202121269234U CN217638234U CN 217638234 U CN217638234 U CN 217638234U CN 202121269234 U CN202121269234 U CN 202121269234U CN 217638234 U CN217638234 U CN 217638234U
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Abstract
The utility model discloses a preparation carbon-14 sample chemical reaction unit in water, including reation kettle, reation kettle's top pass through the glass pipe and be connected with the absorption bottle, reation kettle's top be connected with many valves through the pipeline, many valves pass through the pipeline and are connected with the diaphragm pump, 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 tube coupling, the centrifugal pump has flourishing water appearance bucket through the tube coupling, 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 leads to pipe and leads toThe pipeline is connected with a gas flowmeter, the gas flowmeter is connected with a nitrogen cylinder, 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 utility model belongs to a chemical reaction device, in particular to a chemical reaction device for preparing an underwater carbon-14 sample.
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 water sample is consumed for collecting a carbon-14 sample, 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 the limitations of using only fenton oxidation alone 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 carbon-14 in water chemical reaction device to improve the conversion efficiency of carbon-14 in water.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a prepare the chemistry reaction unit of carbon-14 sample in water, it can improve carbon conversion efficiency effectively.
The technical scheme of the utility model 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 pump, 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 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 beneficial effects of the utility model reside in 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 view of a chemical reaction apparatus for preparing an underwater carbon-14 sample 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 present invention will be described in further detail with reference to the accompanying drawings and specific 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 utility model utilizes 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 photogenerated holes (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. Through the combined action of ultrasonic cavitation, ultraviolet ray and titanium dioxide, finally, the product is beneficialThe conversion efficiency of carbon can be greatly improved by 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 utility model discloses in add two work modules such as symmetry array supersonic generator, symmetry ultraviolet generating device to titanium dioxide is as the catalyst in order to improve aquatic carbon conversion efficiency.
The chemical reaction generating unit is improved, and two pairs of symmetrical array ultrasonic generators are added around the position of the reaction kettle, which is 40cm away from the bottom, so that the chemical reaction generating unit is uniformly distributed; a pair of symmetrical ultraviolet generating devices is added to ensure symmetrical distribution on two sides, and the ultrasonic generator and the ultraviolet generating devices are independently regulated and controlled.
The utility model discloses a use as follows:
1) After a water sample enters 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 (9)
1. A chemical reaction device for preparing a carbon-14 sample in water is characterized in that: the reaction kettle is connected with an absorption bottle through a glass guide pipe, 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 pump 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 containing sample barrel through a pipeline, a silt prevention suction pendant is arranged at the bottom of the water containing sample barrel, 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 flowmeter through a pipeline, the gas flowmeter is connected with a nitrogen bottle, and the bottom of the reaction kettle is connected with a 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.
2. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1, wherein: the parallel reagent bottles are 4 reagent bottles connected in parallel.
3. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1, wherein: the cover opening device is of a hand-held pressure type structure.
4. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1, wherein: the reaction kettle is of a wide-mouth stirring structure.
5. A chemical reaction apparatus for preparing a carbon-14 sample in water according to claim 1, wherein: the absorption bottles are three absorption bottles connected in series.
6. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1, wherein: the outer sleeve is of a double-layer stainless steel structure.
7. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1, wherein: the ultrasonic generators are arranged in a symmetrical array.
8. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 1, wherein: the ultraviolet generating devices are symmetrically arranged.
9. A chemical reaction apparatus for preparing a carbon-14 in water sample according to claim 8, wherein: the two ultraviolet generating devices are respectively positioned between the two ultrasonic generators.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121269234.8U CN217638234U (en) | 2021-06-08 | 2021-06-08 | Chemical reaction device for preparing carbon-14 sample in water |
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| CN202121269234.8U CN217638234U (en) | 2021-06-08 | 2021-06-08 | Chemical reaction device for preparing carbon-14 sample in water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115452495A (en) * | 2021-06-08 | 2022-12-09 | 中核核电运行管理有限公司 | Chemical reaction device for preparing carbon-14 sample in water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115452495A (en) * | 2021-06-08 | 2022-12-09 | 中核核电运行管理有限公司 | Chemical reaction device for preparing carbon-14 sample in water |
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