CN220715827U - Biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge - Google Patents
Biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge Download PDFInfo
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- 239000003225 biodiesel Substances 0.000 title claims abstract description 78
- 238000009903 catalytic hydrogenation reaction Methods 0.000 title claims abstract description 29
- 238000000889 atomisation Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 230000005684 electric field Effects 0.000 claims abstract description 42
- 238000003860 storage Methods 0.000 claims abstract description 38
- 230000004888 barrier function Effects 0.000 claims abstract description 36
- 239000006185 dispersion Substances 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 24
- 239000002994 raw material Substances 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 238000005984 hydrogenation reaction Methods 0.000 abstract description 21
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 5
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- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
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- 230000002195 synergetic effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000007868 Raney catalyst Substances 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 229910000564 Raney nickel Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge, which comprises an air supply unit, a liquid supply unit, an electric field enhanced biodiesel dispersion unit, a dielectric barrier discharge generation unit and a liquid storage unit; the liquid supply unit is connected with a liquid inlet of the electric field enhanced biodiesel dispersion unit, an inlet of the dielectric barrier discharge generation unit is connected with an outlet of the electric field enhanced biodiesel dispersion unit, and an outlet of the dielectric barrier discharge generation unit is connected with an inlet of the liquid storage unit; the liquid is atomized by the electric field enhanced biodiesel dispersing unit and then fully mixed with gas, the gas and the liquid after the reaction enter the liquid storage unit through the dielectric barrier discharge generating unit for catalytic hydrogenation reaction, the liquid is stored in the liquid storage unit, and the gas is discharged through an outlet of the liquid storage unit. The hydrogenation device can realize high-efficiency and low-energy-consumption hydrogenation, and is simple in structure and convenient to install.
Description
Technical Field
The utility model belongs to the field of catalytic hydrogenation upgrading of biological oil, and particularly relates to a catalytic hydrogenation upgrading device of biological diesel based on dielectric barrier discharge.
Background
With the development of socioeconomic performance and the increase of population, the demand for energy is also increasing. Excessive use of non-renewable energy causes serious energy shortage and environmental pollution. The development of clean renewable energy is an important means to ensure sustainable development of human society. Biodiesel is considered to be an important direction for future energy development due to its environmental protection, renewable, safety, economy, and other advantages. However, biodiesel prepared by conventional methods has poor oxidation stability due to low carbon bond saturation, is susceptible to oxidation to cause deterioration of quality, and is difficult to be used on a large scale. In addition, the lower cetane number also affects the combustion and safety performance of biodiesel.
The biodiesel can be subjected to selective catalytic hydrogenation to obtain higher carbon bond saturation, and the oxidation stability and cetane number of the biodiesel are improved. However, current biodiesel hydrogenation processes typically require high temperature and pressure conditions, and catalyst deactivation problems are an unavoidable challenge. In contrast, high energy particles, reactive species and control of the reaction pathway can be provided by exciting the plasma, thereby providing the possibility of achieving some difficult reactions at normal temperature and pressure. The dielectric barrier discharge plasma technology has shown excellent application effects in the fields of hydrogen production, water treatment and the like due to the flexibility, high efficiency, simple operation and mature technology. In recent years, a learner has proposed a hydrogenation upgrading technical scheme based on a dielectric barrier discharge reaction technology. The hydrogenation reaction under mild conditions is realized. Compared with the traditional technology, the biodiesel hydrogenation by plasma has obvious advantages, and the related research and technology of applying the plasma to hydrogenation reaction are few. When the electrode is connected with the power supply, the gap between the electrodes excites the plasma, so that the energy consumption is low, the process is simple, and the method can be applied to industrial production on a large scale. However, the gas-liquid interface area obtained by introducing hydrogen into biodiesel is relatively small, and the hydrogenation rate needs to be further improved.
Disclosure of Invention
Aiming at the technical problems, the utility model provides a biodiesel atomization catalytic hydrogenation upgrading device based on dielectric barrier discharge, which realizes high-efficiency and low-energy hydrogenation, and the device designed by the utility model has the advantages of simple structure, convenient installation and lower operation and maintenance cost; the whole device is simple to operate and easy to process.
The technical scheme adopted by the utility model is as follows:
a biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge comprises an air supply unit, a liquid supply unit, an electric field enhanced biodiesel dispersion unit, a dielectric barrier discharge generation unit and a liquid storage unit;
the liquid supply unit is connected with a liquid inlet of the electric field enhanced biodiesel dispersion unit, an inlet of the dielectric barrier discharge generation unit is connected with an outlet of the electric field enhanced biodiesel dispersion unit, and an outlet of the dielectric barrier discharge generation unit is connected with an inlet of the liquid storage unit;
the liquid is atomized by the electric field enhanced biodiesel dispersing unit and then fully mixed with gas, the gas and the liquid after the reaction enter the liquid storage unit through the dielectric barrier discharge generating unit for catalytic hydrogenation reaction, the liquid is stored in the liquid storage unit, and the gas is discharged through an outlet of the liquid storage unit.
In the scheme, the air supply unit comprises an air storage tank, a pressure reducing valve, a first valve, a flowmeter and a pipeline A;
one end of the pipeline A is connected with an air outlet of the air storage tank; the pipeline A is sequentially provided with a pressure reducing valve, a first valve, a flowmeter, an electric field enhanced biodiesel dispersion unit and a dielectric barrier discharge generation unit, and the other end of the pipeline A is connected with an inlet of a liquid storage unit; the gas storage tank stores hydrogen.
In the above scheme, the liquid supply unit comprises a raw material tank, a second valve and a pump;
the biodiesel is stored in the raw material tank, one end of the pipeline B is connected with the outlet of the raw material tank, and the other end of the pipeline B is communicated with the liquid inlet of the electric field enhanced biodiesel dispersing unit;
and a second valve and a pump are arranged on the pipeline B.
In the above scheme, the electric field enhanced biodiesel dispersion unit comprises a cylinder, an array capillary electrode, a ring electrode and a high-voltage direct current power supply;
one end of the array capillary electrode is connected with the liquid supply unit, the other end of the array capillary electrode is inserted into the inner cavity of the cylinder, and the ring electrode is arranged in the inner cavity of the cylinder and is positioned below the array capillary electrode; the array capillary electrode and the ring electrode are respectively connected with a high-voltage direct-current power supply to form an electric field in the inner cavity of the cylinder; the cylinder is provided with an inlet and an outlet, the inlet is connected with the air supply unit, and the outlet is connected with the inlet of the dielectric barrier discharge generating unit.
In the above scheme, the dielectric barrier discharge generating unit comprises an inner electrode, a dielectric tube and an outer electrode which are coaxially arranged, wherein one end of the inner electrode is connected with the high-voltage alternating current power supply, the other end of the inner electrode is inserted into the dielectric tube, and the outer electrode is arranged on the outer wall of the dielectric tube and is connected with the high-voltage alternating current power supply; and an air inlet B of the dielectric tube is connected with the electric field enhanced biodiesel dispersion unit, and an air outlet B of the dielectric tube is connected with the liquid storage unit.
Furthermore, the high-voltage alternating current power supply is also connected with an oscilloscope; and a current probe and a voltage probe are also arranged between the high-voltage alternating current power supply and the oscilloscope.
In the scheme, the gap between the inner electrode and the inner wall of the dielectric tube is 1-3.5 mm.
In the above scheme, the array capillary electrode comprises a plurality of single capillary electrodes vertically arranged in an array.
Further, the inner diameter of the single capillary electrode is 0.1-0.3 mm.
In the scheme, the distance between the array capillary electrode and the ring electrode is 10-20 mm.
Compared with the prior art, the utility model has the beneficial effects that:
the device for improving the quality of biodiesel by atomization catalytic hydrogenation based on dielectric barrier discharge can realize high-efficiency and low-energy-consumption hydrogenation, and has the advantages of simple structure, convenient installation and lower operation and maintenance cost; the whole device is simple to operate and easy to process.
Drawings
Fig. 1 is a schematic view of the whole device structure of the present utility model.
Fig. 2 is a schematic diagram of a dielectric barrier discharge generating unit according to the present utility model.
FIG. 3 is a schematic diagram of an array capillary electrode according to the present utility model.
In the figure, 1, a gas storage tank, 2, a pressure reducing valve, 3, a first valve, 4, a flowmeter, 5, an air inlet A,6, a ring electrode, 7, an array capillary electrode, 8, an air outlet A,9, a pipeline A,10, an air inlet B,11, an inner electrode, 12, an outer electrode, 13, a dielectric tube, 14, an air outlet B,15, an air inlet C,16, a liquid storage tank, 17, an air outlet C,18, an oscilloscope, 19, a current probe, 20, a voltage probe, 21, a high-voltage alternating-current power supply, 22, a high-voltage direct-current power supply, 23, a pipeline B,24, a pump, 25, a second valve and 26.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The upper, lower, left, right, front, rear, etc. of the present utility model are defined based on the upper, lower, left, right, front, rear, etc. of the experimental device, and are intended to discuss the structure, assembly, function, etc. of the experimental device, but are not limited thereto. In addition, to show the internal composition or working principle of the experimental device, part of the packaging shell is removed.
The utility model will be further described with reference to the drawings and examples, to which the scope of protection of the utility model is not limited.
FIG. 1 shows a preferred embodiment of a plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to the present utility model, which comprises a gas supply unit, a liquid supply unit, an electric field enhanced biodiesel dispersion unit, a dielectric barrier discharge generation unit and a liquid storage unit;
the liquid supply unit is connected with a liquid inlet of the electric field enhanced biodiesel dispersion unit, an inlet of the dielectric barrier discharge generation unit is connected with an outlet of the electric field enhanced biodiesel dispersion unit, and an outlet of the dielectric barrier discharge generation unit is connected with an inlet of the liquid storage unit;
the liquid is atomized by the electric field enhanced biodiesel dispersing unit and then fully mixed with gas, the gas and the liquid after the reaction enter the liquid storage unit through the dielectric barrier discharge generating unit for catalytic hydrogenation reaction, the liquid is stored in the liquid storage unit, and the gas is discharged through an outlet of the liquid storage unit.
According to the embodiment, the air supply unit comprises an air storage tank 1, a pressure reducing valve 2, a first valve 3, a flow meter 4 and a pipeline A9; one end of the pipeline A9 is connected with the air outlet of the air storage tank 1; the pipeline A9 is sequentially provided with a pressure reducing valve 2, a first valve 3, a flowmeter 4, an electric field enhanced biodiesel dispersion unit and a dielectric barrier discharge generation unit, and the other end of the pipeline A9 is connected with an inlet of a liquid storage unit; the hydrogen is stored in the gas storage tank 1.
According to the present embodiment, the liquid supply unit comprises a raw material tank 26, a second valve 25 and a pump 24; the biodiesel is stored in the raw material tank 26, one end of the pipeline B23 is connected with the outlet of the raw material tank 26, and the other end of the pipeline B is communicated with the liquid inlet of the electric field enhanced biodiesel dispersing unit; the pipeline B23 is provided with a second valve 25 and a pump 24.
According to the embodiment, the electric field enhanced biodiesel dispersion unit comprises a cylinder, an array capillary electrode 7, a ring electrode 6 and a high-voltage direct current power supply 22; one end of the array type capillary electrode 7 is connected with the liquid supply unit, the other end of the array type capillary electrode is inserted into the inner cavity of the cylinder, and the ring electrode 6 is arranged in the inner cavity of the cylinder and is positioned below the array type capillary electrode 7; the array capillary electrode 7 and the ring electrode 6 are respectively connected with a high-voltage direct-current power supply 22 to form an electric field in the inner cavity of the cylinder; the cylinder is provided with an inlet and an outlet, the inlet is connected with the air supply unit, and the outlet is connected with the inlet of the dielectric barrier discharge generating unit.
According to the embodiment, the dielectric barrier discharge generating unit is respectively provided with an inner electrode 11, a dielectric tube 13 and an outer electrode 12 from inside to outside, the inner electrode 11, the dielectric tube 13 and the outer electrode 12 are coaxially arranged to form a reactor, the outer electrode 12 is wrapped on the outer surface of the dielectric tube 13, one end of the inner electrode 11 is connected with a high-voltage alternating current power supply 21, the other end is inserted into the dielectric tube 13, and the outer electrode 12 is arranged on the outer wall of the dielectric tube 13 and is connected with the high-voltage alternating current power supply 21; the air inlet B10 of the dielectric tube 13 is connected with the electric field enhanced biodiesel dispersion unit, and the air outlet B14 of the dielectric tube 13 is connected with the liquid storage unit.
The inlet end of the electric field enhanced biodiesel dispersing unit is communicated with the air supply unit, the air supply unit provides hydrogen raw material gas for the electric field enhanced biodiesel dispersing unit, atomized biodiesel obtained by carrying the electric field enhancement enters the inner cavity of the dielectric tube 13, in addition, charged liquid drops are evaporated under the inherent thermal effect of dielectric barrier discharge, but the charge quantity of the charged liquid drops is unchanged, so that the liquid drops reach the Rayleigh limit and are further crushed, a larger contact area between a plasma environment and the biodiesel is provided, and the hydrogenation reaction is promoted.
Preferably, the high-voltage ac power supply 21 is also connected to the oscilloscope 18; a current probe 19 and a voltage probe 20 are also provided between the high voltage ac power supply 21 and the oscilloscope 18.
Preferably, the material of the inner electrode 11 is preferably Raney nickel, which is used as both an electrode and a catalyst in the hydrogenation process. The dielectric tube 13 is preferably made of quartz glass or alumina ceramic, and the outer electrode 12 is preferably made of aluminum foil. In this embodiment, aluminum foil is used as the outer electrode material, but a metal mesh electrode, such as a copper mesh, may be used. The inner electrode 11 is connected to a high voltage ac power source 21 by a wire, and the outer electrode 12 is grounded by a wire. The electrical signals are recorded by oscilloscope 18 through current probe 19 and voltage probe 20. The application frequency of the high-voltage alternating current power supply 21 is controlled to be 12-20kHz.
Preferably, the gap between the inner electrode 11 and the inner wall of the dielectric tube 13 is 1 to 3.5mm. Considering the stability of the plasma discharge (the size of the discharge gap directly affects the formation of the ionization region and the discharge intensity), the safety (too small a discharge gap may cause an excessive discharge current, causing damage or short circuit of the device), and the discharge efficiency (in dielectric barrier discharge, the smaller the discharge gap, the smaller the energy loss of the discharge and the higher the discharge efficiency), the gap between the inner electrode 11 and the inner wall of the dielectric tube 13 is 1 to 3.5mm as an optimal discharge gap.
According to the present embodiment, the array type capillary electrode 7 includes a plurality of single capillary electrodes arranged vertically in an array.
Preferably, the inner diameter of the single capillary electrode is 0.1-0.3 mm. The inner diameter of the capillary electrode directly influences the atomization effect, i.e. the size of the droplets produced, smaller inner diameters generally result in smaller droplet sizes. However, the flow rate of electrostatic atomization is usually not more than 100ml/h, the flow rate is difficult to meet the actual hydrogenation requirement, the liquid flow rate and the droplet size are comprehensively considered, an array electrode is selected, and the inner diameter of a capillary electrode is limited to be 0.1-0.3 mm.
Preferably, the diameter of the cross section of the ring electrode 6 is 2mm, and the ring electrode is arranged at a position 10-20 mm below the array capillary electrode 7, namely, the distance between the array capillary electrode 7 and the ring electrode 6 is 10-20 mm. The method aims to realize proper electric field intensity and electric field distribution, thereby obtaining better electrostatic atomization spraying effect and particle size.
The array capillary electrode 7 is vertically arranged and needs to be grounded, the inner diameter of a single capillary electrode is between 0.1 and 0.3mm, and the extension length is adjustable. The array capillary electrode 7 is connected with a high-voltage direct-current power supply 22 through a wire, and the ring electrode 6 is grounded through the wire. The ring electrode 6 material is preferably copper. In the present embodiment, the ring electrode 6 is used, but a metal mesh electrode or a metal plate electrode may be used. The voltage applied by the high-voltage DC power supply 22 is controlled to be 10kV or more.
In order to more clearly explain the biodiesel hydrogenation upgrading technology designed by the application, the working process is further described as follows:
before use, all valves remain closed. The second valve 25 is opened and biodiesel feedstock is pumped by pump 24 through conduit B23 to the array capillary electrode 7. After the liquid drops appear at the orifice of the array capillary electrode 7, the pump 24 and the second valve 25 are closed, and the air in the pipeline B23 is discharged. Opening a pressure reducing valve 2 to control the air outlet pressure; the first valve 3 was opened, the gas flow was adjusted, and the gas was continuously introduced for 5 minutes, exhausting the air in the pipe and the reactor. The second valve 25 is opened and biodiesel feedstock is pumped by pump 24 through conduit B23 to the array capillary electrode 7. After the liquid drops appear at the pipe orifice of the array capillary electrode 7, the high-voltage direct-current power supply 22 is started, the power supply parameters are regulated, and the applied voltage is controlled to be more than 10 kV. The biodiesel is dispersed in the form of fine mist after the electric field action, and is carried to the reactor by the air flow generated by the air supply unit. The high voltage ac power supply 21 is started and the oscilloscope 18 is turned on at the same time, and the power supply parameters are adjusted according to the electric signal displayed by the oscilloscope. Plasma is generated in the gas atmosphere of the discharge gap between the inner electrode 11 and the dielectric tube 13, and hydrogen and biodiesel are hydrogenated under the synergistic effect of the inner electrode 11 made of a catalyst. The liquid after the reaction is collected by the liquid storage tank 16, and the gas is discharged and recovered by the gas outlet 17C.
Fig. 2 is a schematic view of a reactor in which the outer dimensions of the inner electrode 11 can be adjusted as desired, and appropriately increasing the dimensions of the inner and outer electrodes 12 can form a larger discharge volume under the same discharge gap conditions, and the gas flow residence time can be prolonged, thereby increasing the hydrogenation rate.
Fig. 3 is a schematic view of an array capillary electrode 7, wherein the number and arrangement of the electrodes can be adjusted as required.
The device for improving quality of biodiesel by atomization catalytic hydrogenation based on dielectric barrier discharge can realize the hydrogenation of biodiesel under mild conditions by utilizing dielectric barrier discharge plasma, and can realize high-efficiency and low-energy hydrogenation by utilizing the technology of strengthening liquid dispersion by applying an external electric field to atomize biodiesel. The hydrogenation reaction can be further enhanced by increasing the two-phase interface area by improving the relevant dispersion technique.
The electric field enhanced biodiesel dispersing unit of the utility model enables biodiesel to be uniformly dispersed into a reactor in a form of fine mist through the arrangement of the array capillary electrode 7 and the ring electrode 6, and the biodiesel is hydrogenated and upgraded by utilizing electric field enhanced phase dispersion and dielectric barrier discharge. The biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge can realize effective hydrogenation under the mild condition of biodiesel under the synergistic effect of plasma, catalyst and thermal effect. The device designed by the utility model has simple structure, convenient installation and lower operation and maintenance cost; the whole device is simple to operate and easy to process.
The biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge enables the whole reaction to be carried out under the mild condition of normal temperature and normal pressure, avoids the deactivation of the catalyst, has low requirements on reaction equipment and reaction conditions, is beneficial to reducing the cost and is easy to operate. Meanwhile, necessary safety measures are adopted for the equipment, and the production safety is improved.
According to the utility model, through the design of the electrode structure and the electric field strengthening method, monodisperse liquid drops under the condition of low energy consumption are obtained. The biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge can control the applied voltage and the flow of biodiesel, and generate liquid drops with diameters from millimeter to micrometer, so that the gas-liquid two-phase reaction is enhanced, the product quality is improved, the waste of raw gas is reduced, and the effective and accurate regulation and control of the hydrogenation depth of biodiesel are realized. In addition, the biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge enables electrohydrodynamic flow caused by an electric field to strengthen interphase mixing to a certain extent, and is beneficial to hydrogenation reaction.
The above embodiments are merely for illustrating the design concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, the scope of the present utility model is not limited to the above embodiments. Therefore, all equivalent changes or modifications made in accordance with the principles and design considerations disclosed herein, including the number and form of array electrodes to be configured according to reactor size and the array reactors to be configured according to actual throughput, are within the scope of the present utility model.
Claims (10)
1. The biodiesel atomization catalytic hydrogenation upgrading device based on plasma discharge is characterized by comprising an air supply unit, a liquid supply unit, an electric field enhanced biodiesel dispersion unit, a dielectric barrier discharge generation unit and a liquid storage unit;
the liquid supply unit is connected with a liquid inlet of the electric field enhanced biodiesel dispersion unit, an inlet of the dielectric barrier discharge generation unit is connected with an outlet of the electric field enhanced biodiesel dispersion unit, and an outlet of the dielectric barrier discharge generation unit is connected with an inlet of the liquid storage unit;
the liquid is atomized by the electric field enhanced biodiesel dispersing unit and then fully mixed with gas, the gas and the liquid after the reaction enter the liquid storage unit through the dielectric barrier discharge generating unit for catalytic hydrogenation reaction, the liquid is stored in the liquid storage unit, and the gas is discharged through an outlet of the liquid storage unit.
2. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 1, wherein the gas supply unit comprises a gas storage tank (1), a pressure reducing valve (2), a first valve (3), a flowmeter (4) and a pipeline a (9);
one end of the pipeline A (9) is connected with an air outlet of the air storage tank (1); the pipeline A (9) is sequentially provided with a pressure reducing valve (2), a first valve (3), a flowmeter (4), an electric field enhanced biodiesel dispersion unit and a dielectric barrier discharge generation unit, and the other end of the pipeline A (9) is connected with an inlet of a liquid storage unit; the hydrogen is stored in the gas storage tank (1).
3. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 1, wherein the liquid supply unit comprises a raw material tank (26), a second valve (25) and a pump (24);
the biodiesel is stored in the raw material tank (26), one end of the pipeline B (23) is connected with the outlet of the raw material tank (26), and the other end of the pipeline B is communicated with the liquid inlet of the electric field enhanced biodiesel dispersing unit;
the pipeline B (23) is provided with a second valve (25) and a pump (24).
4. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 1, wherein the electric field enhanced biodiesel dispersion unit comprises a cylinder, an array capillary electrode (7), a ring electrode (6) and a high-voltage direct current power supply (22);
one end of the array capillary electrode (7) is connected with the liquid supply unit, the other end of the array capillary electrode is inserted into the inner cavity of the cylinder, and the ring electrode (6) is arranged in the inner cavity of the cylinder and is positioned below the array capillary electrode (7); the array capillary electrode (7) and the ring electrode (6) are respectively connected with a high-voltage direct current power supply (22) to form an electric field in the inner cavity of the cylinder; the cylinder is provided with an inlet and an outlet, the inlet is connected with the air supply unit, and the outlet is connected with the inlet of the dielectric barrier discharge generating unit.
5. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 1, wherein the dielectric barrier discharge generation unit comprises an inner electrode (11), a dielectric tube (13) and an outer electrode (12) which are coaxially arranged, one end of the inner electrode (11) is connected with a high-voltage alternating current power supply (21), the other end is inserted into the dielectric tube (13), and the outer electrode (12) is arranged on the outer wall of the dielectric tube (13) and is connected with the high-voltage alternating current power supply (21); an air inlet B (10) of the dielectric tube (13) is connected with the electric field enhanced biodiesel dispersion unit, and an air outlet B (14) of the dielectric tube (13) is connected with the liquid storage unit.
6. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 5, wherein the high-voltage alternating current power supply (21) is also connected with an oscilloscope (18); a current probe (19) and a voltage probe (20) are also arranged between the high-voltage alternating current power supply (21) and the oscilloscope (18).
7. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 5, wherein the gap between the inner electrode (11) and the inner wall of the dielectric tube (13) is 1-3.5 mm.
8. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 4, wherein the array capillary electrode (7) comprises a plurality of single capillary electrodes arranged vertically in an array.
9. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 8, wherein the inner diameter of the single capillary electrode is 0.1-0.3 mm.
10. The plasma discharge-based biodiesel atomization catalytic hydrogenation upgrading device according to claim 4, wherein the distance between the array capillary electrode (7) and the ring electrode (6) is 10-20 mm.
Priority Applications (1)
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