AU2020103321A4 - DEVICE FOR TREATING VOCs WITH PULSE CORONA AND CATALYST - Google Patents
DEVICE FOR TREATING VOCs WITH PULSE CORONA AND CATALYST Download PDFInfo
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- AU2020103321A4 AU2020103321A4 AU2020103321A AU2020103321A AU2020103321A4 AU 2020103321 A4 AU2020103321 A4 AU 2020103321A4 AU 2020103321 A AU2020103321 A AU 2020103321A AU 2020103321 A AU2020103321 A AU 2020103321A AU 2020103321 A4 AU2020103321 A4 AU 2020103321A4
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- single metal
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Abstract
Disclosed is a device for treating VOCs with pulse corona and catalyst. A left side of a front end
of a pulse corona box is provided with a square opening that matches a catalyst box; the pulse
corona box is composed of three single metal boxes with the same shape and structure stacked
vertically; the single metal box is provided with an opening A on a front side surface of the square
opening, and is mounted inside with a wiring board I, a wiring board II, a ground electrode plate I
and a ground electrode plate II that are arranged vertically; an even number of copper electrodes
are mounted on both wiring boards I and II; the catalyst box is arranged inside the square opening
and is arranged in close contact with the pulse corona box; a rear side surface of the catalyst box
is provided with an opening B, the opening B is closed by a vertically-arranged baffle partition A
to form a receiving cavity, and at least one vertically-arranged baffle partition B is mounted inside
the receiving cavity; both the baffle partition A and the baffle partition B are provided with a
plurality of through holes across surfaces. The device has good treating effect, low energy
consumption, and can effectively reduce the amount of by-products generated in the treating
process.
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Description
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DEVICE FOR TREATING VOCs WITH PULSE CORONA AND CATALYST
FIELD OF THE APPLICATION The invention belongs to the technical field of processing VOCs, in particular, to a device for treating VOCs with pulse corona and catalyst.
At present, volatile organic compounds have become another major pollutant after air relay dust, SO 2 and NOx. In traditional treatment technologies, combustion, adsorption and
condensation methods are often used. The combustion method is easy to pollute the environment, the adsorption method is not ideal and has low efficiency, and the condensation method consumes more energy. In order to overcome the deficiencies in the above technology, professionals have developed a low-temperature plasma method. Low-temperature plasma shows the advantages of high efficiency, speed and low energy consumption when purifying and treating low-concentration and large-volume exhaust gas. However, low-temperature plasma technology generates many by-products when degrading VOCs, including gaseous intermediate organics and solid aerosols.
Summary of Invention
In view of the above problems of the prior art, the invention provides a device for treating
VOCs with pulse corona and catalyst. The device has good treating effect, low energy
consumption, and can effectively reduce the amount of by-products generated in the treating
process.
To this end, the invention provides a device for treating VOCs with pulse corona and
catalyst, including a catalyst box and a pulse corona box;
a left side of a front end of a pulse corona box is provided with a square opening that
matches a catalyst box; the pulse corona box is composed of three single metal boxes with the
same shape and structure stacked vertically; the single metal box is provided with an opening A
on a front side surface of the square opening, and is mounted inside with a wiring board I, a
wiring board II, a ground electrode plate I and a ground electrode plate II that are arranged
vertically; an even number of copper electrodes are mounted on left and right side surfaces of the wiring boards I; the wiring board I is made of insulating material and is located in the middle of the square opening while extending in the front and rear directions, with a rear end fixedly connected to a rear end plate of the single metal box and a front end extending to a position close to the square opening; the ground electrode plate II is located at a right end of the square opening, with a front end connected to a rear end of a side end plate in the middle of the single metal box and a rear end extending toward the rear end plate of the single metal box, and an air passage is left between the rear end plate of the single metal box and the rear end; the wiring board II is made of insulating material and is mounted on an inner side of a right end plate of the single metal box, an even number of copper electrodes are mounted on an inner side of the wiring board II, and a ground copper electrode plate I is mounted on an inner side of a left end plate of the single metal box in a snug manner; a rear end of the single metal box is provided with an air port B and an air port A on an upper cover plate and a lower cover plate on the left side of the wiring board I, with a front end provided with an air port C and an air port D respectively located on the upper cover plate and the lower cover plate on a right side of the ground electrode plate II; after three single metal boxes are stacked longitudinally, the air port A on a lower single metal box serves as a total air inlet of the pulse corona box, both the air port B and the air port D on the lower single metal box are closed by a blocking plate, the air port D on a middle single metal box is communicated to the air port C on the lower single metal box, both the air port C and the air port A on the middle single metal box are closed by the blocking plate, the air port A on an upper single metal box is communicated to the air port B on the middle single metal box, the air port C on the upper single metal box is used as a total air outlet of the pulse corona box, and the air port B and the air port D on the upper single metal box are both closed by the blocking plate; the ground electrode plate I and ground electrode plate II are both grounded through the single metal box; the copper electrode is connected to an external high-voltage narrow pulse power supply through a wire through port arranged on the single metal box; the catalyst box is arranged inside the square opening and is arranged in close contact with the pulse corona box; a rear side surface of the catalyst box is provided with an opening B, the opening B is closed by a vertically-arranged baffle partition A to form a receiving cavity, and at least one vertically-arranged baffle partition B extending in the front and rear direction is mounted inside the receiving cavity, the baffle partition B dividing the receiving cavity into a plurality of cavity spaces; both the baffle partition A and the baffle partition B are provided with a plurality of through holes across surfaces.
Further, in order to facilitate assembly and disassembly for transportation, a right side
surface of the catalyst box is mounted with a magnetic back plate in a snug manner, and is
fixedly connected to the pulse corona box through the magnetic back plate; the upper single
metal box and the middle single metal box, and the middle single metal box and the lower
single metal box, are all attracted and fixedly connected with each other by a sheet magnet.
Further, in order to make the gas pass smoothly, the single metal box is further provided
with an arc transition plate; the arc transition plate is arranged vertically and is arranged close to
the rear end plate of the single metal box, with one end connected to the wiring board I and the
other end connected to the right side plate of the single metal box as well as a recessed surface
facing a front side.
Further, the copper electrode is in the shape of a cone, with a tip arranged away from the
wiring board I or the wiring board II, and a number of hollow holes are arranged across a cone
surface; an interval between adjacent copper electrodes is the same. Many electrodes with a
small radius of curvature may be formed by the provision of hollow holes, which may facilitate
the formation of many corona areas, and solve the problem of small corona area and uneven
electron flow density in the traditional needle-plate pulse corona method.
Preferably, the single metal box is made of ferritic stainless steel.
In the invention, the plurality of receptor spaces arranged in the catalyst box may be
loaded with a plurality of catalysts according to different conditions, and the provision of the
plurality of catalysts may enrich VOCs, so that the concentration of VOCs in the catalyst box is
greatly increased, thereby improving the effect and efficiency of VOCs treatment. The single
metal box is provided with the opening A on the front side of the square opening, so as to
communicate with the inside of the catalyst box through the opening A and the baffle partition
A on the catalyst box. In this way, the gas entering the single metal box may pass through the inner cavity of the catalyst box, which may facilitate the use of the catalyst to process VOCs.
The middle and right ends of the single metal box are respectively provided with wiring boards
I and II, and copper electrodes are mounted on both wiring boards I and II, so that the
generation of corona discharge may be facilitated by applying pulse voltage. In the process of
corona discharge, electrons in the pulsed electric field collide with neutral molecules or atoms
to ionize, resulting in an "electron avalanche" phenomenon. The electrons diffuse to the
surroundings at a speed much greater than the migration speed of ions, while positive ions
staying in place gradually accumulate. Due to the increase of local electron energy in the
electric field and the continuous occurrence of new electron avalanches, the low-temperature
plasma generated may activate the lattice oxygen inside the catalyst to produce a series of
coordinated reactions such as electron holes and local thermal effects, which increases the
residence time and collision probability of VOCs inside the reactor and reduces the energy
requirement of the catalyst reaction. Moreover, the plasma may have a large number of
micro-discharges between the catalysts, which may activate the catalysts and generate heat to
release VOCs to form a special and cyclic "storage-discharge" process, thereby achieving the
purpose of completely decomposing VOCs. The baffle partitions A and B may promote the
formation of turbulence, so that the formed turbulence and the hollowed copper electrodes may
solve the problems of uneven electron flow density and small discharge corona area in the
needle-plate pulse corona method. At the same time, a series of coordinated reactions such as
electron holes and local thermal effects generated by the catalyst's enrichment of VOCs and
low-temperature plasma activation of the internal lattice oxygen of the catalyst, and then the
catalyst is activated to increase the residence time and collision probability of VOCs, so as to
form the cyclic "storage-discharge" process. The device uses a reaction system with several
stages to geometrically improve the life of the catalyst, and avoids the problems of excessive
catalyst consumption and excessive intermediate products in the system with one stage. The
device may combine the catalyst and the needle-plate pulse corona method, which not only
improves the treatment effect of VOCs, but also improves the treatment efficiency. Through the
arrangement of the wiring board I and the ground electrode plate II, an S-shaped air passage
may be formed inside the box body of the single metal box, and the S-shaped air passage may
delay the passage time of VOCs to be treated in the box, so that the treatment effect and treatment efficiency of VOCs maybe further improved.
Brief Description of Drawings
Fig. 1 is a structure diagram of the invention;
Fig. 2 is a structure diagram of a single metal box of the invention;
Fig. 3 is a top view of Fig. 2;
Fig. 4 is a structure diagram of a catalyst box of the invention;
Fig. 5 is a structure diagram of a copper electrode of the invention;
Fig. 6 is a structure diagram of a blocking cover of the invention;
Fig. 7 is a diagram of the assembly of the wiring board I or the wiring board II together with
the copper electrode in the invention.
In figures: 1, catalyst box; 2, pulse corona box; 3, sheet magnet; 4, air passage; 5, copper
electrode; 6, wiring board I; 7, ground electrode plate I; 8, wire through port; 9, arc transition
plate; 10, baffle partition A; 11, baffle partition B; 12, opening A; 13, wiring board II; 14, ground
electrode board II; 15, air port B; 16, air port A; 17, air port C; 18, air port D; 19, total air inlet;
, total air outlet; 21, single metal box; 22, magnetic back plate.
The invention will be further elaborated hereafter with combination of the drawings.
As shown in Figs. 1 to 7, a device for treating VOCs with pulse corona and catalyst
includes a catalyst box 1 and a pulse corona box 2;
a left side of a front end of a pulse corona box 2 is provided with a square opening that
matches a catalyst box 1; the pulse corona box 2 is composed of three single metal boxes 21
with the same shape and structure stacked vertically; the single metal box 21 is provided with
an opening A12 on a front side surface of the square opening, and is mounted inside with a
wiring board I6, a wiring board 1113, a ground electrode plate I7 and a ground electrode plate
II 14 that are arranged vertically; an even number of copper electrodes 5 are mounted on left and right side surfaces of the wiring boards I 6; the wiring board I 6 is made of insulating material and is located in the middle of the square opening while extending in the front and rear directions, with a rear end fixedly connected to a rear end plate of the single metal box 21 and a front end extending to a position close to the square opening; the ground electrode plate 1114 is located at a right end of the square opening, with a front end connected to a rear end of a side end plate in the middle of the single metal box 21 and a rear end extending toward the rear end plate of the single metal box 21, and an air passage 4 is left between the rear end plate of the single metal box and the rear end 21; the wiring board 1113 is made of insulating material and is mounted on an inner side of a right end plate of the single metal box 21, an even number of copper electrodes 5 are mounted on an inner side of the wiring board 1113, and a ground copper electrode plate I7 is mounted on an inner side of a left end plate of the single metal box 21 in a snug manner; a rear end of the single metal box 21 is provided with an air port B15 and an air port A16 on an upper cover plate and a lower cover plate on the left side of the wiring board I6, with a front end provided with an air port C17 and an air port D18 respectively located on the upper cover plate and the lower cover plate on a right side of the ground electrode plate II 14; after three single metal boxes 21 are stacked longitudinally, the air port A16 on a lower single metal box 21 serves as a total air inlet 19 of the pulse corona box 2, both the air port B15 and the air port D18 on the lower single metal box 21 are closed by a blocking plate, the air port
D18 on a middle single metal box2l is communicated to the air port C17 on the lower single
metal box 21, both the air port C17 and the air port A16 on the middle single metal box 21 are
closed by the blocking plate, the air port A16 on an upper single metal box 21 is communicated
to the air port B15 on the middle single metal box 21, the air port C17 on the upper single metal
box 21 is used as a total air outlet 20 of the pulse corona box 2, and the air port B15 and the air
port D18 on the upper single metal box 21 are both closed by the blocking plate; the ground
electrode plate I7 and ground electrode plate 1114 are both grounded through the single metal
box 21; the copper electrode 5 is connected to an external high-voltage narrow pulse power
supply through a wire through port 8 arranged on the single metal box 21;
the catalyst box 1 is arranged inside the square opening and is arranged in close contact
with the pulse corona box 2; a rear side surface of the catalyst box 1 is provided with an opening B, the opening B is closed by a vertically-arranged baffle partition A10 to form a receiving cavity, and at least one vertically-arranged baffle partition B11 extending in the front and rear direction is mounted inside the receiving cavity, the baffle partition B11 dividing the receiving cavity into a plurality of cavity spaces; both the baffle partition A10 and the baffle partition B11 are provided with a plurality of through holes across surfaces.
In order to facilitate assembly and disassembly for transportation, a right side surface of
the catalyst box 1 is mounted with a magnetic back plate 22 in a snug manner, and is fixedly
connected to the pulse corona box 2 through the magnetic back plate 22; the upper single metal
box 21 and the middle single metal box 21, and the middle single metal box 21 and the lower
single metal box 21, are all attracted and fixedly connected with each other by a sheet magnet 3.
In order to make the gas pass smoothly, the single metal box 21 is further provided with an
arc transition plate 9; the arc transition plate 9 is arranged vertically and is arranged close to the
rear end plate of the single metal box 21, with one end connected to the wiring board I6 and the
other end connected to the right side plate of the single metal box 21 as well as a recessed
surface facing a front side.
The copper electrode 5 is in the shape of a cone, with a tip arranged away from the wiring
board I6 or the wiring board II 13, and a number of hollow holes are arranged across a cone
surface; an interval between adjacent copper electrodes 5 is the same. Many electrodes with a
small radius of curvature may be formed by the provision of hollow holes, which may facilitate
the formation of many corona areas, and solve the problem of small corona area and uneven
electron flow density in the traditional needle-plate pulse corona method.
Preferably, the single metal box 21 is made of ferritic stainless steel.
The working process is as follows:
The gas containing low concentration and large air volume of VOCs after drying and dust
removal is fed into the pulse corona box 2 through the total air inlet 19; the gas enters the single
metal box 21 on the lower side of the pulse corona box 2, then passes through in an S shape
from left to right to enter the single metal box 21 in the middle, then passes through in an S
shape from right to left to enter the single metal box 21 on the upper side, and then passes through in an S-shape from left to right to finally exit from the total air outlet 20. In the process, a high-voltage narrow pulse is applied by an external high-voltage narrow pulse power supply, and a pulse electric field is generated near the copper electrode. When the gas passes through the corona area, the VOCs are purified by the high-energy electrons and ions produced by the ionized gas on the copper electrode 5 with hollow holes, as well as a large number of active groups and ultraviolet rays, and then enter the catalyst box 1 through the through holes on the baffle partition A10. On the one hand, the baffle partitions A and B in the catalyst box 1 may create turbulence and increase the collision frequency between high-energy particles and VOCs; the plasma will also have a large number of micro-discharges between the catalysts, which may activate the catalysts and generate heat to release VOCs. The "storage-discharge" process prolongs the residence time of VOCs inside the reactor. Therefore, the concentration of VOCs in the device is greatly increased, so that the frequency of collisions of the electrons, particles, and activities based on pollutant molecules will also be greatly increased, thereby greatly improving the degradation efficiency. The released VOCs that have not yet been purified will pass through the two pulse discharge regions in the single metal box 21 again, and enter the middle and upper single metal boxes 21 in an S-shape to repeat the process. The finally-purified gas will be discharged through the total air outlet 20 of the pulse corona box 2.
Claims (5)
1. A device for treating VOCs with pulse corona and catalyst, comprising a catalyst box,
wherein the device further comprises a pulse corona box;
a left side of a front end of a pulse corona box is provided with a square opening that
matches a catalyst box; the pulse corona box is composed of three single metal boxes with the
same shape and structure stacked vertically; the single metal box is provided with an opening A
on a front side surface of the square opening, and is mounted inside with a wiring board I, a
wiring board II, a ground electrode plate I and a ground electrode plate II that are arranged
vertically; an even number of copper electrodes are mounted on left and right side surfaces of
the wiring boards I; the wiring board I is made of insulating material and is located in the
middle of the square opening while extending in the front and rear directions, with a rear end
fixedly connected to a rear end plate of the single metal box and a front end extending to a
position close to the square opening; the ground electrode plate II is located at a right end of the
square opening, with a front end connected to a rear end of a side end plate in the middle of the
single metal box and a rear end extending toward the rear end plate of the single metal box, and
an air passage is left between the rear end plate of the single metal box and the rear end; the
wiring board II is made of insulating material and is mounted on an inner side of a right end
plate of the single metal box, an even number of copper electrodes are mounted on an inner side
of the wiring board II, and a ground copper electrode plate I is mounted on an inner side of a
left end plate of the single metal box in a snug manner; a rear end of the single metal box is
provided with an air port B and an air port A on an upper cover plate and a lower cover plate on
the left side of the wiring board I, with a front end provided with an air port C and an air port D
respectively located on the upper cover plate and the lower cover plate on a right side of the
ground electrode plate II; after three single metal boxes are stacked longitudinally, the air port A
on a lower single metal box serves as a total air inlet of the pulse corona box, both the air port B
and the air port D on the lower single metal box are closed by a blocking plate, the air port D on
a middle single metal box is communicated to the air port C on the lower single metal box, both
the air port C and the air port A on the middle single metal box are closed by the blocking plate,
the air port A on an upper single metal box is communicated to the air port B on the middle single metal box, the air port C on the upper single metal box is used as a total air outlet of the pulse corona box, and the air port B and the air port D on the upper single metal box are both closed by the blocking plate; the ground electrode plate I and ground electrode plate II are both grounded through the single metal box; the copper electrode is connected to an external high-voltage narrow pulse power supply through a wire through port arranged on the single metal box; the catalyst box is arranged inside the square opening and is arranged in close contact with the pulse corona box; a rear side surface of the catalyst box is provided with an opening B, the opening B is closed by a vertically-arranged baffle partition A to form a receiving cavity, and at least one vertically-arranged baffle partition B extending in the front and rear direction is mounted inside the receiving cavity, the baffle partition B dividing the receiving cavity into a plurality of cavity spaces; both the baffle partition A and the baffle partition B are provided with a plurality of through holes across surfaces.
2. The device for treating VOCs with pulse corona and catalyst according to claim 1,
wherein a right side surface of the catalyst box is mounted with a magnetic back plate in a snug
manner, and is fixedly connected to the pulse corona box through the magnetic back plate; the
upper single metal box and the middle single metal box, and the middle single metal box and
the lower single metal box, are all attracted and fixedly connected with each other by a sheet
magnet.
3. The device for treating VOCs with pulse corona and catalyst according to claim 1 or 2,
wherein the single metal box is further provided with an arc transition plate; the arc transition
plate is arranged vertically and is arranged close to the rear end plate of the single metal box,
with one end connected to the wiring board I and the other end connected to the right side plate
of the single metal box as well as a recessed surface facing a front side.
4. The device for treating VOCs with pulse corona and catalyst according to claim 3,
wherein the copper electrode is in the shape of a cone, with a tip arranged away from the wiring
board I or the wiring board II, and a number of hollow holes are arranged across a cone surface;
an interval between adjacent copper electrodes is the same.
5. The device for treating VOCs with pulse corona and catalyst according to claim 4,
wherein the single metal box is made of ferritic stainless steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020093301.4 | 2020-01-16 | ||
| CN202020093301.4U CN211936380U (en) | 2020-01-16 | 2020-01-16 | Device for treating VOCs (volatile organic compounds) by using pulse corona and catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020103321A4 true AU2020103321A4 (en) | 2021-01-14 |
Family
ID=73173858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020103321A Ceased AU2020103321A4 (en) | 2020-01-16 | 2020-11-09 | DEVICE FOR TREATING VOCs WITH PULSE CORONA AND CATALYST |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN211936380U (en) |
| AU (1) | AU2020103321A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115121095A (en) * | 2021-03-24 | 2022-09-30 | 湖北湛澜环保科技有限公司 | MRTO magnetic control medium-temperature plasma VOCs digestion device, system and process |
-
2020
- 2020-01-16 CN CN202020093301.4U patent/CN211936380U/en not_active Expired - Fee Related
- 2020-11-09 AU AU2020103321A patent/AU2020103321A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115121095A (en) * | 2021-03-24 | 2022-09-30 | 湖北湛澜环保科技有限公司 | MRTO magnetic control medium-temperature plasma VOCs digestion device, system and process |
| CN115121095B (en) * | 2021-03-24 | 2023-04-25 | 湖北湛澜环保科技有限公司 | MRTO magnetic control medium-temperature plasma VOCs digestion device, system and process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN211936380U (en) | 2020-11-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |