CN112620311B - High-voltage nanosecond pulse-based auxiliary degradation device and method for abandoned medical protective clothing - Google Patents
High-voltage nanosecond pulse-based auxiliary degradation device and method for abandoned medical protective clothing Download PDFInfo
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- CN112620311B CN112620311B CN202011506859.1A CN202011506859A CN112620311B CN 112620311 B CN112620311 B CN 112620311B CN 202011506859 A CN202011506859 A CN 202011506859A CN 112620311 B CN112620311 B CN 112620311B
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- 230000001681 protective effect Effects 0.000 title claims abstract description 60
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 30
- 230000015556 catabolic process Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 16
- 208000028659 discharge Diseases 0.000 claims abstract description 99
- 239000002699 waste material Substances 0.000 claims abstract description 34
- 238000007599 discharging Methods 0.000 claims abstract description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 20
- 238000002791 soaking Methods 0.000 claims abstract description 17
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 16
- 238000005469 granulation Methods 0.000 claims abstract description 5
- 230000003179 granulation Effects 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 230000001678 irradiating effect Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000000630 rising effect Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 239000011797 cavity material Substances 0.000 description 23
- 239000000463 material Substances 0.000 description 14
- 241000234295 Musa Species 0.000 description 8
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 8
- -1 polypropylene Polymers 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010525 oxidative degradation reaction Methods 0.000 description 2
- 238000001782 photodegradation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007539 photo-oxidation reaction Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/0075—Disposal of medical waste
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Electrotherapy Devices (AREA)
- Processing Of Solid Wastes (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The high-voltage nanosecond pulse-based auxiliary degradation device for the abandoned medical protective clothing comprises a protective clothing pretreatment part consisting of an alcohol soaking pool and a high-temperature disinfection cabinet, a decomposition granulation part consisting of a clothing granulator, and a discharge treatment part consisting of a discharge chamber and a high-voltage nanosecond pulse power supply, wherein the output end of the granulator is communicated with a feeding pipe of the discharge chamber; the high-voltage nanosecond pulse power supply is electrically connected with the discharge chamber; the using method comprises the following steps: 1) placing the cleaned waste medical protective clothing in an alcohol soaking pool for soaking and then taking out; 2) placing the waste medical protective clothing soaked with alcohol in a high-temperature disinfection cabinet, irradiating by ultraviolet rays, drying and taking out; 3) putting the treated waste medical protective clothing into a granulator for granulation; 4) feeding the waste medical protective clothing particles into a discharge chamber; 5) connecting a high-voltage nanosecond pulse power supply with a discharge chamber; 6) setting the voltage of a high-voltage nanosecond pulse power supply; 7) and (5) discharging treatment, namely closing the high-voltage nanosecond pulse power supply after discharging.
Description
Technical Field
The invention belongs to the technical field of medical plastic degradation, and particularly relates to a high-voltage nanosecond pulse-based auxiliary degradation device and method for waste medical protective clothing.
Background
With the continuous development of high molecular technology, the efficient degradation of various polymer products becomes a problem which needs to be solved urgently. The polypropylene product is widely applied to the industries of medical treatment, chemical industry, aerospace, communication and the like. In the medical field, polypropylene SMS non-woven protective cloth made by compounding a spunbond method and a melt-blown method replaces a large amount of traditional medical materials, is commonly used in the manufacture of disposable medical protective clothing and medical surgical masks, and becomes the main raw material of the current medical protective products, wherein the disposable medical protective clothing is rapidly popularized and used in the whole world due to the advantages of excellent barrier property, portability of clothing and the like. The demand for disposable medical protective garments is rapidly rising worldwide. However, due to the current situation of wide use and the characteristic of disposable use of the disposable medical protective clothing, the disposable medical protective clothing cannot be recycled and reused completely and is difficult to degrade after being discarded, and the environment is polluted to a certain extent if the disposable medical protective clothing is not treated properly, so that the disposable medical protective clothing after being efficiently degraded plays an important role in the aspects of environmental protection, energy conservation and emission reduction.
At present, the main treatment methods of the discarded medical polypropylene nonwoven fabrics are incineration and sanitary landfill methods, which bring great pressure to the environment due to the harmful byproducts, so many scholars propose photo-oxidation degradation, catalyst degradation, supercritical water degradation, etc., but these methods are limited to some extent in practice due to the relatively complicated treatment conditions.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the auxiliary degradation device and method for the waste medical protective clothing based on the high-voltage nanosecond pulse.
In order to achieve the purpose, the invention adopts the technical scheme that:
the auxiliary degradation device for the waste medical protective clothing based on the high-voltage nanosecond pulse comprises an alcohol soaking pool, wherein the output end of the alcohol soaking pool is communicated with the input end of a high-temperature disinfection cabinet; the output end of the high-temperature disinfection cabinet is communicated with the input end of the granulator; the output end of the granulator is communicated with a feed pipe of the discharge chamber; the high-voltage nanosecond pulse power supply is electrically connected with the discharge chamber.
The discharge chamber comprises a reaction cavity, the bottom of the reaction cavity is a grounding polar plate, and a positive plate is arranged above the grounding polar plate; two ends of the positive plate are arranged in the slidable clamping grooves on the inner wall of the reaction cavity; the top of the reaction cavity is provided with an insulating cover plate 2; the upper part of the positive plate is provided with a discharge electrode.
The discharge electrode extends out of the insulating cover plate.
The discharge chamber is provided with a feed pipe and a discharge pipe.
The discharge pipe of the granulator is connected with the feed pipe of the discharge chamber.
The positive electrode output of the high-voltage nanosecond pulse power supply is connected with a discharge electrode of the discharge chamber, and the discharge electrode is connected with the center of the positive plate.
And the negative electrode of the high-voltage nanosecond pulse power supply is connected with the grounding electrode plate and is grounded.
The insulating cover plate, the positive plate and the ground plate are parallel to each other and are arranged parallel to the ground.
The discharge electrode is perpendicular to the positive plate.
The slidable clamping grooves are tightly attached to the inner wall of the discharge cavity and symmetrically arranged on the left side and the right side of the two sides of the inner wall.
The use method of the high-voltage nanosecond pulse-based auxiliary degradation device for the abandoned medical protective clothing comprises the following steps:
1) putting the cleaned waste medical protective clothing into a medical alcohol soaking pool with the alcohol concentration of 95%, and taking out after half an hour;
2) placing the waste medical protective clothing soaked with the alcohol in a high-temperature disinfection cabinet, directly irradiating the waste medical protective clothing for 10-30 seconds by using ultraviolet rays with the wavelength of 254-257 nanometers, and taking out the waste medical protective clothing after high-temperature drying;
3) putting the treated waste medical protective clothing into a granulator for cutting and uniform granulation treatment, wherein the particle diameter is 10-100 micrometers;
4) feeding the waste medical protective clothing particles into a discharge chamber through a feeding pipe, uniformly paving the particles on a ground pole plate, and closing the feeding pipe and the discharging pipe after feeding is finished;
5) the positive electrode output of the high-voltage nanosecond pulse power supply is connected with a discharge electrode and a positive plate of a discharge chamber through leads, and a ground plate in a discharge cavity is grounded;
6) setting the voltage amplitude of a high-voltage nanosecond pulse power supply to be 25-50 kilovolts, the pulse rising edge to be 10-80 nanoseconds, the pulse width to be 100-200 nanoseconds, and the pulse repetition frequency to be 5-15 kilohertz;
7) and (3) applying pulse voltage to the discharge electrode and the positive plate through the high-voltage nanosecond pulse power supply, gradually reducing the discharge voltage after 10-20 minutes of discharge treatment, and closing the high-voltage nanosecond pulse power supply after the discharge is finished.
The invention has the beneficial effects that:
compared with the prior art, the invention adopts a high-voltage nanosecond pulse power supply, the high-voltage nanosecond pulse is a high-voltage pulse voltage signal with the pulse rising edge and the pulse width both in nanosecond level under the narrow pulse, the high-voltage nanosecond pulse discharge has the characteristic of being capable of generating high-energy electrons, high-oxidizing substances, high-energy chemical groups and the like which are different from the discharge of direct current and power frequency power supplies, not only the high-energy active particles generated by the discharge can break chemical bonds such as C-H or C-C and the like in molecular chains on the surface of the material to cause the breakage of the molecular chains, thereby causing the average molecular weight to be reduced, and the discharge can also generate the combined action of heat, ultraviolet radiation and oxidation, further degrading the waste medical protective clothing to a certain extent, the degradation process does not produce secondary pollution, and is expected to be developed into an auxiliary degradation technology which is suitable for environment, safe and efficient. Accordingly, provided herein is a method for the assisted degradation of disposable medical protective garments based on high voltage nanosecond pulses. The advantages of the invention are as follows:
1) the device uses the measures of alcohol soaking and high-temperature ultraviolet disinfection to disinfect and sterilize the discarded medical protective clothing, has high bacteria removal rate, is convenient for the subsequent discharge degradation process, and has the advantages of safety and reliability.
2) The device provided by the invention uses the high-frequency high-voltage nanosecond pulse power supply with extremely short rising edge, can provide more high-energy active particles to impact and treat the surface of a material, discharges, and has the combined action of oxidative degradation, thermal degradation and photodegradation, is more efficient than a conventional single treatment method, and has the advantages of simple structure and low energy consumption.
3) The device has the advantages of high energy efficiency, good stability, strong anti-interference capability and the like, can be widely applied to the field of medical plastic auxiliary degradation and scientific research, and provides a good experimental basis for the research of environment-friendly high polymer materials.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
FIG. 2 is a schematic view of the structure of the discharge chamber of the present invention.
In the figure: 1-discharge electrode, 2-insulating cover plate, 3-reaction cavity, 7-positive plate, 5-grounding polar plate, 6-feeding pipe, 4-discharging pipe, 8-slidable clamping groove, 9-alcohol soaking pool, 10-high-temperature disinfection cabinet, 11-granulator, 12-high-voltage nanosecond pulse power supply and 13-discharge chamber.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The auxiliary degradation device for the waste medical protective clothing based on the high-voltage nanosecond pulse comprises an alcohol soaking pool 9, wherein the output end of the alcohol soaking pool 9 is communicated with the input end of a high-temperature disinfection cabinet 10; the output end of the high-temperature disinfection cabinet 10 is communicated with the input end of the granulator 11; the output end of the granulator 11 is communicated with a feed pipe of the discharge chamber 13; a high voltage nanosecond pulse power supply 12 is electrically connected to the discharge chamber 13.
The discharge chamber 13 comprises a reaction cavity 3, the bottom of the reaction cavity 3 is a grounding polar plate 5, and a positive plate 7 is arranged above the grounding polar plate 5; two ends of the positive plate 7 are arranged in a slidable clamping groove 8 on the inner wall of the reaction cavity 3; the top of the reaction cavity 3 is provided with an insulating cover plate 2; the discharge electrode 1 is arranged on the upper part of the positive plate 7.
The discharge electrode 1 extends out of the insulating cover plate 2.
The discharge chamber 13 is provided with a feed pipe 6 and a discharge pipe 4.
The method comprises the steps of preprocessing a waste medical protective clothing, decomposing and granulating a waste medical protective clothing and discharging and degrading a waste medical protective clothing. The part of the waste medical protective clothing for pretreatment mainly comprises an alcohol soaking pool and a high-temperature disinfection cabinet, the protective clothing is mainly disinfected and sterilized, the granulator decomposes and granulates the pretreated waste medical protective clothing to ensure that the waste medical protective clothing can be subjected to more sufficient discharge treatment, and the part of the discharge degradation comprises a discharge chamber and a high-voltage nanosecond pulse power supply and is used for performing discharge degradation treatment on the granular waste medical protective clothing. The discharge chamber structure of the discharge degradation unit comprises a discharge electrode 1, an insulating cover plate 2, a reaction cavity 3, a positive plate 7, a grounding polar plate 5, a feeding pipe 6, a discharging pipe 4 and a slidable clamping groove 8. The device comprises an alcohol soaking pool 9, a high-temperature disinfection cabinet 10, a granulator 11, a high-voltage nanosecond pulse power supply 12 and a discharge chamber 13.
The discharge pipe of the granulator is connected with the feed pipe 6 of the discharge chamber.
The positive electrode output of the high-voltage nanosecond pulse power supply 12 is connected with the discharge electrode 1 of the discharge chamber 13, and the discharge electrode 1 is connected with the center of the positive plate 7.
And the negative electrode of the high-voltage nanosecond pulse power supply 12 is connected with the grounding polar plate 5 and grounded.
The insulating cover plate 2, the positive plate 7 and the ground plate 5 are parallel to each other and are all placed parallel to the ground.
The discharge electrode 1 is arranged perpendicular to the positive plate 7.
The slidable clamping grooves 8 are tightly attached to the inner wall of the discharge cavity 3 and symmetrically arranged on the left side and the right side of the two sides of the inner wall.
The diameter of the discharge electrode 1 is 3-15 mm, the length is 20-35 cm, the discharge electrode vertically penetrates through the insulating cover plate 2 and is placed in the center of the positive plate 7, the top end of the discharge electrode 1 is provided with a jack matched with the banana plug, the banana plug is connected with the banana plug at the tail end of a lead when the banana plug is used, the banana plug is good in high-temperature resistance, and the banana plug can be made of one of copper, tungsten and silver.
The reaction cavity 3 adopts a regular cuboid structure, and the length and the width of the cuboid are respectively as follows: 50-200 cm and 30-150 cm, the height is 10-50 cm, the thickness of each surface is 10-100 mm, and the cavity material can be one of quartz, polytetrafluoroethylene and ceramic.
The length and width of the insulating cover plate 2 are consistent with those of the reaction cavity 3, the thickness of the insulating cover plate is 100-150 mm, the diameter of the central round hole is 4-16 mm, the insulating cover plate can be well matched with the discharge electrode 1, and the material of the insulating cover plate is consistent with that of the reaction cavity 3.
The length of the feeding pipe 6 and the length of the discharging pipe 4 can be 10-15 cm, the diameter of the feeding pipe 6 and the discharging pipe 4 can be 15-25 mm, the feeding pipe 6 is placed in the middle of the right side face and the middle of the ground, the discharging pipe 4 is placed at the position, close to the ground pole plate 5, of the left side face of the discharging cavity 3, and the materials are polytetrafluoroethylene.
The thickness of the positive plate 7 and the thickness of the grounding polar plate 5 are both 100-150 mm, the distance between the positive plate and the grounding polar plate is 10-200 mm, and the positive plate and the grounding polar plate can be made of one of quartz, polytetrafluoroethylene and ceramic.
But sliding guide draw-in groove 8 is the same width with 3 inner walls of discharge chamber, and longitudinal depth is 15 ~ 20cm, can make positive plate 7 freely remove from top to bottom and can reliably fix in discharge chamber inside, and its material is polytetrafluoroethylene.
The high-voltage nanosecond pulse power supply utilizes an all-solid-state switching technology, the amplitude of output voltage is 25-50 kilovolts, the rising edge of a pulse is 10-80 nanoseconds, the pulse width is 100-200 nanoseconds, the pulse repetition frequency is 5-15 kilohertz, and the pulse voltage can puncture air in gaps to generate stable plasma.
The working principle of the invention is as follows:
the pretreatment part of the device can ensure that the discarded medical protective clothing is primarily sterilized by the alcohol tank and then is heated, dried and sterilized by the high-temperature sterilizing cabinet, so that the protective clothing material can be safely treated by the discharging unit. The particles are processed by a granulator to become particles of the medical protective clothing, the diameter of the particles is 10-100 micrometers, and the particles are used for increasing the contact area between active particles and high-energy electrons and materials. The short rising edge of high-voltage nanosecond pulse power supply electrode can promote to produce more quick high energy electrons in the clearance, the fracture of particle material surface chemical bond accelerates, also can produce oxygen free radical, ozone, etc. strong oxidizing substance when discharging, carry out oxidative degradation effect to the material, through a series of reactions such as the fracture that makes the inside chemical bond of material granule take place, electron transfer, hydrogen deprivation, reduce the average molecular mass of material granule, simultaneously, also can play the effect of thermal degradation and photodegradation under heat and the ultraviolet radiation coprocessing that discharge produced, realize the high-efficient degradation processing to the multidimension degree of abandonment medical protection clothes. Through plasma treatment generated by a high-voltage nanosecond pulse power supply, the difficultly-degraded high-molecular protective clothing material can be converted into an intermediate product which is easy to carry out biochemical treatment, so that subsequent biodegradation and treatment are facilitated, and effective condition support is provided for reutilization of the waste medical protective clothing material.
As shown in figure 1, the high-voltage nanosecond pulse-based waste medical protective clothing assists the overall structure of the degradation device. The alcohol soaking pool and the high-temperature disinfection cabinet form a pretreatment part for disinfecting and sterilizing the waste protective clothing; the granulator cuts and granulates the waste protective clothing into a small particle structure capable of high-efficiency discharge treatment, wherein the outlet of the granulator is connected with the feeding pipe 6 of the discharge chamber, and material particles can be controllably conveyed; the high-voltage nanosecond pulse power supply and the discharge chamber jointly form a discharge part, wherein the positive electrode output of the high-voltage nanosecond pulse power supply is connected with a discharge electrode 1 of the discharge chamber, the discharge electrode 1 is vertically connected with a positive plate 7, the negative electrode of the high-voltage nanosecond pulse is connected with a grounding polar plate 5 and is reliably grounded, and the high-voltage nanosecond pulse power supply can provide continuous repeated pulse voltage for the discharge chamber during normal work.
As shown in fig. 2, the discharge chamber structure of the high-voltage nanosecond pulse-based auxiliary degradation device for the abandoned medical protective clothing comprises a discharge electrode 1, an insulating cover plate 2, a reaction cavity 3, a positive plate 7, a grounding polar plate 5, a feeding pipe 6, a discharging pipe 4 and a sliding guide rail clamping groove 8. The discharging pipe of the granulator is connected with the feeding pipe 6 of the discharging chamber, the positive output electrode of the high-voltage nanosecond pulse power supply is connected with the discharging electrode 1 of the discharging chamber, the diameter of an opening in the center of the insulating cover plate 2 is 3-15 mm, the discharging electrode 1 penetrates through the center of the insulating cover plate 2 and is vertically connected with the positive plate 7, the top end of the discharging electrode 1 is provided with a jack matched with a banana plug and can be connected with the banana plug carried at the tail end of a connected wire, the negative electrode of the high-voltage nanosecond pulse is connected with the grounding polar plate 5 and is grounded, the insulating cover plate 2, the positive plate 7 and the grounding polar plate 5 are parallel to each other and are all arranged in parallel with the ground, the discharging electrode 1 is arranged in a mode of being vertical to the positive plate 7, the slidable clamping groove 8 is tightly attached to the inner wall of the discharging cavity 3, the slidable clamping groove 8 is symmetrically arranged on the left and right of the two sides of the inner wall, the discharging pipe 4 and the feeding pipe 6 are vertically embedded into the side surface of the discharging cavity, the depth is 3-5 cm, the insulating cover plate 2 can be closely matched with the upper end of the discharge cavity, and the discharge pipe 4 and the feed pipe 6 are closed when the equipment operates normally.
The use method of the high-voltage nanosecond pulse-based auxiliary degradation device for the abandoned medical protective clothing is characterized by comprising the following steps of:
1) putting the cleaned waste medical protective clothing into a medical alcohol soaking pool 9 with the alcohol concentration of 95%, and taking out after half an hour;
2) placing the waste medical protective clothing soaked with alcohol in a high-temperature disinfection cabinet 10, directly irradiating for 10-30 seconds by using ultraviolet rays with the wavelength of 254-257 nanometers, and taking out after high-temperature drying;
3) the treated waste medical protective clothing is put into a granulator 11 for cutting and uniform granulation treatment, and the particle diameter is 10-100 microns;
4) feeding the waste medical protective clothing particles into the discharge chamber 13 through a feeding pipe, uniformly paving the particles on a ground pole plate, and closing the feeding pipe 6 and the discharging pipe 4 after the feeding is finished;
5) the positive electrode output of the high-voltage nanosecond pulse power supply 12 is connected with a discharge electrode and a positive plate of a discharge chamber through leads, and a ground plate in a discharge cavity is grounded;
6) setting the voltage amplitude of a high-voltage nanosecond pulse power supply to be 25-50 kilovolts, the pulse rising edge to be 10-80 nanoseconds, the pulse width to be 100-200 nanoseconds, and the pulse repetition frequency to be 5-15 kilohertz;
7) and (3) applying pulse voltage to the discharge electrode and the positive plate through the high-voltage nanosecond pulse power supply, gradually reducing the discharge voltage after the discharge treatment is carried out for 10-20 minutes, and closing the high-voltage nanosecond pulse power supply after the discharge is finished.
Claims (3)
1. The auxiliary degradation device for the abandoned medical protective clothing based on the high-voltage nanosecond pulse is characterized by comprising an alcohol soaking pool (9), wherein the output end of the alcohol soaking pool (9) is communicated with the input end of a high-temperature disinfection cabinet (10); the output end of the high-temperature disinfection cabinet (10) is communicated with the input end of the granulator (11); the output end of the granulator (11) is communicated with a feeding pipe of the discharge chamber (13); the high-voltage nanosecond pulse power supply (12) is electrically connected with the discharge chamber (13);
the discharge chamber (13) comprises a reaction cavity (3), the bottom of the reaction cavity (3) is provided with a grounding polar plate (5), and a positive plate (7) is arranged above the grounding polar plate (5); two ends of the positive plate 7 are arranged in a slidable clamping groove (8) on the inner wall of the reaction cavity (3); the top of the reaction cavity (3) is provided with an insulating cover plate (2); the upper part of the positive plate (7) is provided with a discharge electrode (1);
the discharge electrode (1) extends out of the insulating cover plate (2);
the discharge chamber (13) is also provided with a discharge pipe (4);
the positive electrode output of the high-voltage nanosecond pulse power supply (12) is connected with a discharge electrode (1) of a discharge chamber (13), and the discharge electrode (1) is connected with the center of a positive plate (7);
the negative electrode of the high-voltage nanosecond pulse power supply (12) is connected with the grounding polar plate (5) and is grounded;
the insulating cover plate (2), the positive plate (7) and the ground plate (5) are parallel to each other and are arranged parallel to the ground;
the discharge electrode (1) is perpendicular to the positive plate (7).
2. The high-voltage nanosecond pulse-based auxiliary degradation device for the abandoned medical protective clothing of claim 1, wherein the slidable clamping grooves (8) are tightly attached to the inner wall of the reaction cavity (3) and symmetrically arranged on the left side and the right side of the two sides of the inner wall.
3. The use method of the high-voltage nanosecond pulse-based auxiliary degradation device for the abandoned medical protective clothing is characterized by comprising the following steps of:
1) putting the cleaned waste medical protective clothing into a medical alcohol soaking pool (9) with the alcohol concentration of 95 percent, and taking out after half an hour;
2) placing the waste medical protective clothing soaked with alcohol in a high-temperature disinfection cabinet (10), directly irradiating for 10-30 seconds by using ultraviolet rays with the wavelength of 254-257 nanometers, and taking out after high-temperature drying;
3) the treated waste medical protective clothing is put into a granulator (11) for cutting and uniform granulation treatment, and the particle diameter is 10-100 microns;
4) feeding the waste medical protective clothing particles into the discharge chamber (13) through a feeding pipe, uniformly paving the particles on a ground pole plate, and closing the feeding pipe (6) and the discharging pipe (4) after the feeding is finished;
5) the positive electrode output of a high-voltage nanosecond pulse power supply (12) is connected with a discharge electrode and a positive plate of a discharge chamber through leads, and a ground plate in a discharge cavity is grounded;
6) setting the voltage amplitude of a high-voltage nanosecond pulse power supply to be 25-50 kilovolts, the pulse rising edge to be 10-80 nanoseconds, the pulse width to be 100-200 nanoseconds, and the pulse repetition frequency to be 5-15 kilohertz;
7) and (3) applying pulse voltage to the discharge electrode and the positive plate through the high-voltage nanosecond pulse power supply, gradually reducing the discharge voltage after the discharge treatment is carried out for 10-20 minutes, and closing the high-voltage nanosecond pulse power supply after the discharge is finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011506859.1A CN112620311B (en) | 2020-12-18 | 2020-12-18 | High-voltage nanosecond pulse-based auxiliary degradation device and method for abandoned medical protective clothing |
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| CN202011506859.1A CN112620311B (en) | 2020-12-18 | 2020-12-18 | High-voltage nanosecond pulse-based auxiliary degradation device and method for abandoned medical protective clothing |
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| CN112620311B true CN112620311B (en) | 2022-09-13 |
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| CN114102899A (en) * | 2021-11-12 | 2022-03-01 | 上海交通大学 | Abandonment medical protective clothing is handled on spot and is retrieved device of recycling |
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