CN116723622A - Gas-liquid two-phase discharging device for improving nitrogen fertilizer yield - Google Patents
Gas-liquid two-phase discharging device for improving nitrogen fertilizer yield Download PDFInfo
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- CN116723622A CN116723622A CN202310996763.5A CN202310996763A CN116723622A CN 116723622 A CN116723622 A CN 116723622A CN 202310996763 A CN202310996763 A CN 202310996763A CN 116723622 A CN116723622 A CN 116723622A
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- 239000007788 liquid Substances 0.000 title claims abstract description 78
- 239000000618 nitrogen fertilizer Substances 0.000 title claims abstract description 32
- 238000007599 discharging Methods 0.000 title claims abstract description 15
- 230000004888 barrier function Effects 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 239000012071 phase Substances 0.000 claims abstract description 27
- 239000007864 aqueous solution Substances 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000007791 liquid phase Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 72
- 239000007789 gas Substances 0.000 claims description 25
- 239000010453 quartz Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 75
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 38
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003337 fertilizer Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 210000002381 plasma Anatomy 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 230000008635 plant growth Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/203—Preparation of nitrogen oxides using a plasma or an electric discharge
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/14—Plasma, i.e. ionised gases
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
- C05G5/23—Solutions
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Pest Control & Pesticides (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to the technical field of nitrogenous fertilizers, in particular to a gas-liquid two-phase discharging device for improving the yield of nitrogenous fertilizers, which comprises a discharging mechanism, a gas-phase circulating mechanism and a liquid-phase circulating mechanism; the discharging mechanism comprises a liquid container, an insulating cover plate, a dielectric barrier layer, a high-voltage electrode, a grounding electrode and a high-voltage power supply; the liquid container is internally filled with an aqueous solution for generating nitrogenous fertilizer, the grounding electrode is arranged in the aqueous solution and positioned at the bottom of the liquid container, the insulating cover plate is buckled on the upper side of the liquid container, the middle part of the upper side of the insulating cover plate is provided with a groove, a dielectric barrier layer is arranged in the groove, a discharge gap is arranged between the dielectric barrier layer and the liquid level of the aqueous solution, the high-voltage electrode is tightly attached to the upper side of the dielectric barrier layer, and the high-voltage electrode is a plurality of parallel metal net strip-shaped electrodes. The gas-liquid two-phase discharging device for improving the yield of the nitrogen fertilizer has high nitrogen fixation efficiency, realizes the efficient production of the nitrogen fertilizer, is environment-friendly, has simple reaction conditions and lower cost.
Description
Technical Field
The invention relates to the technical field of nitrogenous fertilizers, in particular to a gas-liquid two-phase discharging device for improving the yield of nitrogenous fertilizers.
Background
The nitrogen element plays an important role in the growth process of crops, is not only a component part of amino acid constituting protein in plants, but also a component part of chlorophyll for photosynthesis of plants, is a key factor influencing the growth of plants, but the plants cannot directly utilize free nitrogen in nature, so that the free nitrogen must be converted into nitrate or ammonium salt absorbable by the plants, and the nitrogen fertilizer absorbed by the plants can not only improve the yield of agricultural products, but also improve the nutritional value of the crops. This process of converting nitrogen in free form into nitrogen-containing compounds is called nitrogen fixation, abbreviated as nitrogen fixation.
The prior nitrogen fixation mainly comprises natural nitrogen fixation and industrial nitrogen fixation, but nitrogen fertilizer generated by natural nitrogen fixation can not meet the needs of plant growth, and the prior industrial nitrogen fixation technology is very mature after the development of nearly century, but still has the problems of high energy consumption, high pollution and the like. But the nitrogen fixation by utilizing low-temperature plasmas can be stably fixed by only providing the supply of nitrogen-containing gas and electric energy, the reaction process does not need to be assisted with conditions of high temperature, high pressure and the like, and no greenhouse gas is discharged, so that the method is a novel potential green nitrogen fixation technology.
The low-temperature plasma collides nitrogen and oxygen molecules to a vibration excitation state by utilizing high-energy electrons under a non-equilibrium state, so that vibration dissociation of nitrogen and oxygen is realized, and nitrogen and oxygen atoms with high reactivity react with the vibration excitation state oxygen and nitrogen molecules, so that breaking of nitrogen and nitrogen triple bonds is realized, and a nitrogen-containing compound with reactivity and capable of being utilized by organisms is generated.
In a plurality of low-temperature plasma unbalanced discharge forms, the dielectric barrier discharge device is simple and easy to realize large-scale industrial application, and is widely applied in the field of plasma nitrogen fixation, but the traditional dielectric barrier discharge device has the problems of poor discharge uniformity, high energy consumption and the like, and the problem of low nitrogen yield caused by low conversion capability of nitrogen molecules due to poor discharge uniformity is solved, so that the improvement of the traditional dielectric barrier discharge device is urgently needed, and the nitrogen fixation device which can realize large-area discharge, improve the nitrogen yield, is simple to operate, has low running cost and high nitrogen fixation efficiency is provided.
Disclosure of Invention
The invention aims to provide a gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer, which has high nitrogen fixation efficiency, realizes the efficient production of nitrogen fertilizer, is environment-friendly, has simple reaction conditions and lower cost.
In order to achieve the aim, the invention provides a gas-liquid two-phase discharging device for improving the yield of nitrogenous fertilizer, which comprises a discharging mechanism, a gas-phase circulating mechanism and a liquid-phase circulating mechanism;
the discharging mechanism comprises a liquid container, an insulating cover plate, a dielectric barrier layer, a high-voltage electrode, a grounding electrode and a high-voltage power supply; the liquid container is filled with an aqueous solution of nitrogen fertilizer to be produced, the grounding electrode is arranged in the aqueous solution and is positioned at the bottom of the liquid container, the insulating cover plate is buckled on the upper side of the liquid container, the middle part of the upper side of the insulating cover plate is provided with a groove, the groove is communicated with the liquid container through a first through hole, a dielectric barrier layer is arranged in the groove, a discharge gap is arranged between the dielectric barrier layer and the liquid surface of the aqueous solution, the high-voltage electrode is tightly attached to the upper side of the dielectric barrier layer, the high-voltage electrode is in a metal net strip shape, and the high-voltage electrode is connected with a high-voltage power supply through a high-voltage cable;
the gas-phase circulation mechanism comprises an external thread connector I, an external thread connector II, an air pump and an air inlet pipeline, wherein the external thread connector I and the external thread connector II are symmetrically arranged on two sides of the insulating cover plate and penetrate through the insulating cover plate to be communicated with the inside of the liquid container;
the liquid phase circulation mechanism comprises a water outlet pipe, a water circulation device and a water inlet pipe, wherein two sides of the water circulation device are respectively connected with the liquid container through the water outlet pipe and the water inlet pipe.
Preferably, the liquid container and the dielectric barrier layer are both made of quartz, the thickness of the dielectric barrier layer is 2mm, and a quartz pressing sheet for fixing the high-voltage electrode is further arranged on the upper side of the dielectric barrier layer.
Preferably, the insulating cover plate is a polytetrafluoroethylene cover plate, and the diameter of the polytetrafluoroethylene cover plate is larger than that of the liquid container.
Preferably, the diameter of the first through hole is smaller than that of the groove, the diameter of the dielectric barrier layer is larger than that of the first through hole, and the diameter of the high-voltage electrode is smaller than or equal to that of the first through hole.
Preferably, the diameter of the first through hole is more than 10mm smaller than the diameter of the dielectric barrier layer, and the height of the first through hole is more than or equal to 2mm.
Preferably, the distance between the dielectric barrier layer and the liquid level of the aqueous solution is less than or equal to 5mm, and the gas in the discharge gap is air.
Preferably, the metal net strip structure of the high-voltage electrode is in a parallel structure.
Preferably, the air inlet pipeline is provided with a gas flowmeter, and the water inlet pipe is provided with a water flowmeter.
The principle of the invention is as follows:
the dielectric barrier mode is utilized, water is used as a ground electrode, a plurality of metal net strips are connected in parallel to form a high-voltage electrode, large-area discharge is realized, stable nitrogen molecules in the air can be oxidized and fixed into active nitrogen oxide which can be absorbed by plants, and the growth of the plants is facilitated. The nitrogen fixing device of the invention takes water as a ground electrode, quartz is used as a blocking medium in the middle, high-voltage electricity is led between a high-voltage electrode and the ground electrode, a stable large-area discharge channel is obtained through the adjustment of voltage and frequency, a large amount of active substances such as electrons, hydroxyl groups, free radicals, excited state particles and the like are generated by discharge, the reaction processes such as electron collision excitation, dissociation, ionization and the like are carried out, nitrogen atoms and oxygen atoms are generated, then the nitrogen atoms and the oxygen atoms are combined to form nitrogen oxides, and the formed gas phase nitrogen oxides can be rapidly dissolved in water to form an active aqueous solution to form a nitrogen-containing liquid、/>Plasma active water with equal components, realizes high-efficiency nitrogen fixation of plasma and improves the yield of nitrogen fertilizer.
The invention has the beneficial effects that:
(1) The gas in the discharge gap is air, nitrogen fixation can be carried out without additionally providing a nitrogen source, only high-voltage power is needed to provide energy, other forms of energy are not needed to be additionally used, and the carbon dioxide isothermal chamber gas is not discharged in the nitrogen fertilizer production process, so that the nitrogen fertilizer production device is environment-friendly.
(2) The strip-shaped high-voltage electrodes of the metal mesh are parallel electrodes, so that one electrode or a plurality of electrodes can be discharged, stable large-area discharge can be easily realized, the discharge efficiency is improved, and the nitrogen strengthening capability is further improved.
(3) According to the invention, the water is used as the ground electrode, the specific heat capacity of the water is large, meanwhile, the water circulation device is used for circulating the water, the heat dissipation effect is enhanced, the temperature rise is slow when the device works, and the discharge stability is facilitated.
(4) The invention realizes the direct interaction between the plasmas and the water, and directly acts the nitrogen oxides generated by air discharge on the water to form plasma activated water, which not only can provide nutrition for plant growth, but also has a certain sterilization effect; the direct action avoids the use of an air duct to transport the gas into the aqueous solutionThe problem of re-reduction by part of active particles is solved, so that the nitrogen fixation efficiency is higher, and the yield of the nitrogen fertilizer is improved.
(5) The device has clear principle, easy realization of reaction conditions and good repeatability and operability, and provides a reference for better researching a novel nitrogen fixation mode.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a gas-liquid two-phase discharge apparatus for increasing nitrogen fertilizer yield in accordance with the present invention;
FIG. 2 is a schematic diagram of a high voltage electrode of a gas-liquid two-phase discharge device for improving nitrogen fertilizer yield;
figure 3 is a working flow chart of a gas-liquid two-phase discharging device for improving the yield of nitrogen fertilizer.
Reference numerals:
1. a liquid container; 2. an insulating cover plate; 3. a dielectric barrier layer; 4. a high voltage electrode; 5. a ground electrode; 6. a high voltage power supply; 7. a groove; 8. a first through hole; 9. tabletting quartz; 10. a second through hole; 11. an external thread joint I; 12. an external thread joint II; 13. an air pump; 14. an air intake duct; 15. a gas flow meter; 16. a water outlet pipe; 17. a water circulation device; 18. a water inlet pipe; 19. a water flowmeter.
Detailed Description
The invention will be further described with reference to examples. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The above-mentioned features of the invention or the features mentioned in the specific examples can be combined in any desired manner, and these specific examples are only intended to illustrate the invention and are not intended to limit the scope of the invention.
Examples
Referring to fig. 1 to 3, the present invention provides a gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer, which comprises a discharge mechanism, a gas-phase circulation mechanism and a liquid-phase circulation mechanism; the insulating cover plate 2 of the discharge mechanism is communicated with the gas circulation mechanism to realize the circulation of gas in the device, and the liquid container 1 of the discharge mechanism is communicated with the liquid circulation mechanism to realize the water circulation of the device.
The discharging mechanism comprises a liquid container 1, an insulating cover plate 2, a dielectric barrier layer 3, a high-voltage electrode 4, a grounding electrode 5 and a high-voltage power supply 6; the liquid container 1 is filled with an aqueous solution to be nitrogenous fertilizer, an air path part is arranged above the liquid level of the aqueous solution, a water path part is arranged below the liquid level, and the air path part provides raw material air for nitrogen fixation and forms a large-area discharge area at the part to generate low-temperature plasma. The ground electrode 5 is provided in the aqueous solution at the bottom of the liquid container 1, and the aqueous solution is conducted as a ground electrode.
The insulating cover plate 2 is buckled on the upper side of the liquid container 1, the insulating cover plate 2 is a polytetrafluoroethylene cover plate, and the diameter of the polytetrafluoroethylene cover plate is larger than that of the liquid container 1. The middle part of the upper side of the insulating cover plate 2 is provided with a groove 7, the groove 7 is communicated with the liquid container 1 through a first through hole 8, the diameter size of the first through hole 8 is smaller than that of the groove 7, a dielectric barrier layer 3 is arranged in the groove 7, and the groove 7 and the dielectric barrier layer 3 are all in a round shape of 100 mm. The distance between the dielectric barrier layer 3 and the liquid level of the aqueous solution is less than or equal to 5mm, a discharge gap, namely a discharge area, is arranged between the dielectric barrier layer 3 and the liquid level of the aqueous solution, and the gas in the discharge gap is air.
The liquid container 1 and the dielectric barrier layer 3 are both made of quartz, the thickness of the dielectric barrier layer 3 is 2mm, the diameter size of the dielectric barrier layer 3 is larger than the diameter of the first through hole 8, the diameter of the first through hole 8 is smaller than the diameter of the dielectric barrier layer 3 by more than 10mm, and the dielectric barrier layer 3 can be stably fixed in the groove 7.
The high-voltage electrode 4 is clung to the upper side of the dielectric barrier layer 3, the upper side of the dielectric barrier layer 3 is also provided with a quartz pressing sheet 9 for fixing the high-voltage electrode 4, namely, the high-voltage electrode 4 is positioned between the quartz pressing sheet 9 and the dielectric barrier layer 3, the quartz pressing sheet 9 is utilized to ensure that the metal net strip-shaped high-voltage electrode 4 is kept flat, the center of the quartz pressing sheet 9 is provided with a through hole II 10 with the diameter of 10mm, a high-voltage cable is arranged in the through hole II 10 in a penetrating manner, and the high-voltage electrode 4 is connected with the high-voltage power supply 6 through the high-voltage cable, so that large-area stable discharge is easy to realize.
The high-voltage electrodes 4 are in a metal net strip shape, the metal net strip structure of the high-voltage electrodes 4 is in a parallel structure, and dielectric barrier discharge of single electrodes, three electrodes or even more electrodes can be realized by increasing or decreasing the number of the metal net electrodes. The strip electrodes of different metal meshes are connected in parallel, a local strong electric field is formed between the grounded water electrode and the corresponding area between each strip electrode of the metal meshes, and compared with the whole sheet electrode, the strip-shaped multi-electrode discharge is adopted, so that the discharge is more uniform and stable. The diameter size of the high-voltage electrode 4 is smaller than or equal to the diameter of the first through hole 8, and the height of the first through hole 8 is larger than or equal to 2mm, so that the polytetrafluoroethylene is prevented from being broken down by discharge or short circuit is prevented.
The gas-phase circulation mechanism comprises a first external thread connector 11, a second external thread connector 12, an air pump 13 and an air inlet pipeline 14, wherein the first external thread connector 11 and the second external thread connector 12 are symmetrically arranged on two sides of the insulating cover plate 2 and penetrate through the insulating cover plate 2 to be communicated with the inside of the liquid container 1, the first external thread connector 11 is connected with one end of the air inlet pipeline 14, the other end of the air inlet pipeline 14 is connected with the air pump 13, the supply of raw material gas of the device is realized through the air pump 13, and the supplied gas is air. The second external thread joint 12 is communicated with the atmosphere or gas treatment equipment and serves as a gas outlet. Good tightness of the air inlet and outlet pipelines can be achieved through the first external thread joint 11 and the second external thread joint 12. The two external thread connectors are made of stainless steel, and are screwed with the insulating cover plate 2 through M8 threads, and the insulating cover plate is an insulating tetrafluoro plate, so that the tightness of the device is ensured.
The air inlet pipeline 14 is provided with the air flowmeter 15, and the air flow rate is conveniently controlled through the air flowmeter 15, so that the air flow rate of the air path part is not too high, and the stability of the water electrode liquid level is further ensured. The gas flow rate is convenient to regulate and control according to the actual working condition by setting the gas flow rate, and real-time monitoring is realized.
The liquid phase circulation mechanism comprises a water outlet pipe 16, a water circulation device 17 and a water inlet pipe 18, wherein two sides of the water circulation device 17 are respectively connected with a branch pipe at the bottom of the liquid container 1 through the water outlet pipe 16 and the water inlet pipe 18. The water in the liquid container 1 is communicated with a water circulation device 17 through one end of a water outlet pipe 16, and the water circulation device 17 is used for re-injecting the water into the liquid container 1 through a water inlet pipe 18, so that the water circulation is realized. The water inlet pipe 18 and the water outlet pipe 16 are all made of PVC transparent hoses, and the water inlet pipe 18 and the water outlet pipe 16 are connected with the branch pipes through the adapter.
The water inlet pipe 18 is provided with the water flowmeter 19, in the working process, the water discharged from the liquid container 1 is naturally discharged by utilizing the water level difference, so that the position of the water circulation device 17 is lower than the water outlet of the liquid container 1, the water flowmeter 19 is connected with the water inlet pipe 18, under the condition that the height difference is unchanged, the water outlet speed and the water inlet speed can be kept to be equal by adjusting the water flowmeter 19, the stability of the liquid level of the water solution is ensured, and the water flowmeter 19 and the gas flowmeter 15 are mutually matched and adjusted to realize the stability of a discharge gap between a medium and the liquid level of the water solution. The liquid phase circulation mechanism can save water, slow down the temperature rise and be beneficial to the stability of discharge.
Specific working procedure
Firstly, injecting an aqueous solution for generating nitrogenous fertilizer into a liquid container 1, opening a water circulation device 17 and a water flow meter 19, enabling water in the liquid container 1 to start circulating through the water circulation device 17, after guaranteeing the stable liquid level in the liquid container 1, opening an air pump 13 and a gas flow meter 15, injecting air into a discharge gap of the liquid container 1, adjusting the gas flow not to be too large, enabling the air flow to be stable, and then opening a high-voltage power supply 6, and applying high voltage between two electrodes to start discharging. After the reaction is finished, the high-voltage power supply 6 and the air pump 13 are disconnected, and then the water solution in the liquid container 1 is completely discharged. Note the switching sequence of the waterway, the gas circuit, and the power supply.
Therefore, the gas-liquid two-phase discharge device for improving the yield of the nitrogen fertilizer provided by the invention realizes a novel low-temperature plasma nitrogen fixation mode, gets rid of the characteristics of high pollution, low yield and high energy consumption of the existing nitrogen fixation mode, directly contacts and interacts with an aqueous solution by applying high pressure to plasma generated by discharging in a gas gap to form an active aqueous solution containing nitrate and nitrite, realizes the efficient generation of the nitrogen fertilizer, can be used as a liquid fertilizer after being treated, is applied to crop cultivation, has a certain bactericidal effect due to the fact that the active aqueous solution contains a small amount of active particles such as ozone, hydrogen peroxide, hydroxyl radicals and the like, and can promote the growth of plants.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (8)
1. The utility model provides an improve gas-liquid two-phase discharge device of nitrogen fertilizer productivity which characterized in that: comprises a discharge mechanism, a gas phase circulation mechanism and a liquid phase circulation mechanism;
the discharging mechanism comprises a liquid container, an insulating cover plate, a dielectric barrier layer, a high-voltage electrode, a grounding electrode and a high-voltage power supply; the liquid container is filled with an aqueous solution of nitrogen fertilizer to be produced, the grounding electrode is arranged in the aqueous solution and is positioned at the bottom of the liquid container, the insulating cover plate is buckled on the upper side of the liquid container, the middle part of the upper side of the insulating cover plate is provided with a groove, the groove is communicated with the liquid container through a first through hole, a dielectric barrier layer is arranged in the groove, a discharge gap is arranged between the dielectric barrier layer and the liquid surface of the aqueous solution, the high-voltage electrode is tightly attached to the upper side of the dielectric barrier layer, the high-voltage electrode is in a metal net strip shape, and the high-voltage electrode is connected with a high-voltage power supply through a high-voltage cable;
the gas-phase circulation mechanism comprises an external thread connector I, an external thread connector II, an air pump and an air inlet pipeline, wherein the external thread connector I and the external thread connector II are symmetrically arranged on two sides of the insulating cover plate and penetrate through the insulating cover plate to be communicated with the inside of the liquid container;
the liquid phase circulation mechanism comprises a water outlet pipe, a water circulation device and a water inlet pipe, wherein two sides of the water circulation device are respectively connected with the liquid container through the water outlet pipe and the water inlet pipe.
2. The gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer according to claim 1, wherein the device comprises: the liquid container and the dielectric barrier layer are both made of quartz, the thickness of the dielectric barrier layer is 2mm, and a quartz pressing sheet for fixing the high-voltage electrode is further arranged on the upper side of the dielectric barrier layer.
3. The gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer according to claim 1, wherein the device comprises: the insulating cover plate is a polytetrafluoroethylene cover plate, and the diameter of the polytetrafluoroethylene cover plate is larger than that of the liquid container.
4. The gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer according to claim 1, wherein the device comprises: the diameter of the first through hole is smaller than that of the groove, the diameter of the dielectric barrier layer is larger than that of the first through hole, and the diameter of the high-voltage electrode is smaller than or equal to that of the first through hole.
5. The gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer according to claim 4, wherein: the diameter of the first through hole is smaller than that of the dielectric barrier layer by more than 10mm, and the height of the first through hole is more than or equal to 2mm.
6. The gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer according to claim 1, wherein the device comprises: the distance between the dielectric barrier layer and the liquid level of the aqueous solution is less than or equal to 5mm, and the gas in the discharge gap is air.
7. The gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer according to claim 1, wherein the device comprises: the metal net strip structure of the high-voltage electrode is a parallel structure.
8. The gas-liquid two-phase discharge device for improving the yield of nitrogen fertilizer according to claim 1, wherein the device comprises: the air inlet pipeline is provided with a gas flowmeter, and the water inlet pipe is provided with a water flowmeter.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4705670A (en) * | 1985-09-03 | 1987-11-10 | Hare Louis R O | Multiple oxidation nitrogen fixation |
| CN1903705A (en) * | 2006-07-11 | 2007-01-31 | 苏州大学 | Method of fixing nitrogen in water and its device |
| CN206692391U (en) * | 2017-04-10 | 2017-12-01 | 安徽汇泽通环境技术有限公司 | A kind of sewage-treatment plant using more needle plate gas-liquid discharge in water plasmas |
| CN111111582A (en) * | 2019-12-31 | 2020-05-08 | 河海大学常州校区 | Water mist jet arc discharge nitrogen fixation device and detection method |
| CN111389326A (en) * | 2020-03-24 | 2020-07-10 | 四川大学 | Nitrogen fixation device and method based on liquid film-dielectric barrier discharge low-temperature plasma |
| US20210130246A1 (en) * | 2021-01-14 | 2021-05-06 | Burak Karadag | Method And Apparatus For Producing Liquid Nitrogen Fertilizer And Plasma Activated Water |
| WO2022232410A1 (en) * | 2021-04-28 | 2022-11-03 | The Board Of Trustees Of The Leland Stanford Junior University | Apparatus for treating water using a plasma source that is protected from water |
| CN115646397A (en) * | 2022-10-10 | 2023-01-31 | 中国科学院电工研究所 | Device and method for synthesizing ammonia based on aeration nanosecond pulse discharge nitrogen fixation coupling electrocatalysis |
-
2023
- 2023-08-09 CN CN202310996763.5A patent/CN116723622B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4705670A (en) * | 1985-09-03 | 1987-11-10 | Hare Louis R O | Multiple oxidation nitrogen fixation |
| CN1903705A (en) * | 2006-07-11 | 2007-01-31 | 苏州大学 | Method of fixing nitrogen in water and its device |
| CN206692391U (en) * | 2017-04-10 | 2017-12-01 | 安徽汇泽通环境技术有限公司 | A kind of sewage-treatment plant using more needle plate gas-liquid discharge in water plasmas |
| CN111111582A (en) * | 2019-12-31 | 2020-05-08 | 河海大学常州校区 | Water mist jet arc discharge nitrogen fixation device and detection method |
| CN111389326A (en) * | 2020-03-24 | 2020-07-10 | 四川大学 | Nitrogen fixation device and method based on liquid film-dielectric barrier discharge low-temperature plasma |
| US20210130246A1 (en) * | 2021-01-14 | 2021-05-06 | Burak Karadag | Method And Apparatus For Producing Liquid Nitrogen Fertilizer And Plasma Activated Water |
| WO2022232410A1 (en) * | 2021-04-28 | 2022-11-03 | The Board Of Trustees Of The Leland Stanford Junior University | Apparatus for treating water using a plasma source that is protected from water |
| CN115646397A (en) * | 2022-10-10 | 2023-01-31 | 中国科学院电工研究所 | Device and method for synthesizing ammonia based on aeration nanosecond pulse discharge nitrogen fixation coupling electrocatalysis |
Non-Patent Citations (2)
| Title |
|---|
| YUN LIU 等: "Efficient electrocatalytic nitrogen reduction to ammonia with FeNi-Co/carbon mat electrodes", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 927, pages 166973 * |
| 郑琪禹 等: "用于分布式光伏消纳的等离子体土壤固氮装置研究", 农村电气化, no. 2, pages 24 - 28 * |
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