WO2016064211A1 - 에틸렌 처리장치 및 이를 이용한 에틸렌 처리방법 - Google Patents
에틸렌 처리장치 및 이를 이용한 에틸렌 처리방법 Download PDFInfo
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- WO2016064211A1 WO2016064211A1 PCT/KR2015/011185 KR2015011185W WO2016064211A1 WO 2016064211 A1 WO2016064211 A1 WO 2016064211A1 KR 2015011185 W KR2015011185 W KR 2015011185W WO 2016064211 A1 WO2016064211 A1 WO 2016064211A1
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- ethylene
- plasma discharge
- plasma
- adsorbent
- discharge unit
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/015—Preserving by irradiation or electric treatment without heating effect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32348—Dielectric barrier discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32018—Glow discharge
- H01J37/32036—AC powered
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32798—Further details of plasma apparatus not provided for in groups H01J37/3244 - H01J37/32788; special provisions for cleaning or maintenance of the apparatus
- H01J37/32816—Pressure
- H01J37/32834—Exhausting
- H01J37/32844—Treating effluent gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]
Definitions
- the present invention relates to an ethylene treatment apparatus and treatment method capable of removing ethylene generated in agricultural product storage facilities.
- agricultural products are locally harvested, sold to the central market through intermediate collectors, and then supplied to consumers through wholesalers and retailers.
- large quantities of agricultural products are stored in cold warehouses for a short time or for a long time.
- Korean Patent Registration No. 10-0745142 (hereinafter, referred to as a related art) There is a known air conditioning device for agricultural storage warehouse.
- a neutralizer capable of suppressing ethylene gas, which promotes corruption of agricultural products can be diffused in a warehouse, thereby suppressing the corruption of agricultural products, and the storage period of the agricultural products is controlled by increasing the storage period. There is an advantage to stabilize the price of agricultural products.
- a low temperature plasma process may be used to decompose ethylene, but the above-described low temperature plasma process may effectively decompose ethylene, but is continuously operated to consume power, and aldehydes and organic acids may be used during plasma decomposition of ethylene. Hazardous by-products are generated, such as the deterioration of the air quality of the agricultural product storage facility.
- the present invention is the inlet and outlet is formed, the plasma discharge portion is filled with the adsorbent therein; And an electrode unit generating a plasma inside the plasma discharge unit, wherein the adsorbent is provided with a catalyst.
- the present invention uses the ethylene processing apparatus, (a) injecting a gas containing ethylene into the plasma discharge portion filled with the adsorbent; (b) applying a voltage to the electrode unit and generating a plasma in the plasma discharge unit to decompose the injected ethylene; And (c) cooling the plasma discharge unit; It provides a method for treating ethylene comprising a.
- the ethylene is accumulated in the adsorbent on which the catalyst is supported, whereby the ethylene can be decomposed in a short time by the plasma and catalyst complexing action, and the ethylene can be decomposed without generating harmful by-products.
- FIG. 1 is a schematic diagram of an ethylene treating apparatus according to an embodiment of the present invention.
- FIG. 2 is a view showing the configuration of an ethylene processing apparatus according to an embodiment of the present invention.
- FIG. 3 is a view showing the configuration of an ethylene processing apparatus according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram of a method for treating ethylene according to one embodiment of the present invention.
- Figure 5 is a graph showing the CO 2 and CO concentration in the step of decomposing the accumulated ethylene by plasma / catalyst complex action in one embodiment of the present invention.
- FIG. 6 is a graph showing the FTIR spectrum of (a) ethylene and (b) FTIR spectrum when the adsorbed ethylene is treated by plasma / catalysis.
- the present invention relates to an ethylene processing apparatus, wherein an inlet and an outlet are formed, and a plasma discharge part filled with an adsorbent therein and an electrode part generating a plasma inside the plasma discharge part, and the adsorbent is supported with a catalyst. It is characterized by being.
- the plasma discharge unit may have a conductive region formed in a predetermined area, and the conductive region may further include a coil formed to surround the outer surface of the plasma discharge unit, and the coil may be formed of copper wire, iron wire, or aluminum wire. .
- the coil is in contact with the ground electrode.
- the plasma discharge part may be formed of a quartz tube, a glass tube, an alumina tube, or a ceramic tube, and the electrode part may extend into an inner passage of the plasma discharge part, and may be a metal rod having the same axis as the plasma discharge part.
- the electrode unit may be connected to a voltage supply device for generating plasma by supplying power to the plasma discharge unit.
- the adsorbent may be alumina, zeolite or a mixture thereof, and the adsorbent may be in the form of a sphere or pellet.
- the catalyst is manganese dioxide (MnO 2 ), copper oxide (CuO), iron oxide (Fe 2 O 3 ), silver oxide (Ag 2 O), vanadium pentoxide (V 2 O 5 ), zinc oxide (ZnO) and titanium dioxide ( TiO 2 ) or a mixture thereof, and the catalyst may be supported on the adsorbent at a concentration of 0.2 to 10 wt%.
- the present invention relates to a method for treating ethylene using an ethylene treatment apparatus, comprising the steps of: (a) injecting a gas containing ethylene into a plasma discharge portion filled with the adsorbent; (b) applying a voltage to the electrode portion; Generating a plasma in the plasma discharge unit to decompose the injected ethylene, and (c) cooling the plasma discharge unit.
- the gas containing ethylene may accumulate in the adsorbent on which the catalyst is supported.
- the step of decomposing the ethylene may include the step of introducing oxygen into the plasma reaction unit and the ethylene is reacted with the oxygen to be oxidized to carbon dioxide and water vapor, the reaction temperature in the step of decomposing the ethylene May be 30 to 90 ° C.
- FIG. 1 is a schematic diagram of an ethylene treatment apparatus according to an embodiment of the present invention
- Figure 2 is a view showing the configuration of the ethylene treatment apparatus according to an embodiment of the present invention
- Figure 3 is an ethylene treatment according to an embodiment of the present invention 4 shows a schematic diagram of an ethylene treatment method according to an embodiment of the present invention
- FIG. 5 shows CO 2 in the step of decomposing ethylene accumulated in an embodiment of the present invention by a plasma / catalyst complex action.
- 6 is a graph showing (a) the FTIR spectrum of ethylene and (b) the FTIR spectrum when the adsorbed ethylene was treated by plasma / catalysis.
- the present invention relates to an ethylene treatment apparatus and a treatment method capable of removing ethylene generated in the agricultural product storage facility 20. More specifically, ethylene generated in the agricultural product storage facility 20 may be reacted with oxygen in a plasma / catalyst combined action in the ethylene processing apparatus 10 to be oxidized to carbon dioxide and water vapor, thereby removing the ethylene.
- the ethylene processing apparatus 10 includes a plasma discharge part 100 and an electrode part 120, and an adsorbent 110 in which a catalyst is supported in the plasma discharge part 100. It characterized by including).
- the adsorbent 110 refers to a material that absorbs adsorbates that are gas or liquid.
- the adsorbent 110 is for adsorbing ethylene, which will be described later.
- Plasma discharge unit 100 of the present invention may be cylindrical, one side is formed with an inlet 101 for introducing the gas and air containing ethylene on one side, the other side includes an outlet (102) through which the purified air is discharged .
- the inlet 101 may include at least two, and the inlet through which the gas containing ethylene is introduced may be referred to as a first inlet 101, and the inlet through which air is introduced is the second inlet 101. ′).
- the plasma reactor of the present invention consists of a tube having a relative dielectric constant sufficient for plasma generation, and may be made of a quartz tube, a glass tube, an alumina tube, or a ceramic tube.
- a quartz tube may be made of a quartz tube.
- the plasma discharge unit 100 may include a conductive region formed in a predetermined area, and the coil 130 may be further included in the conductive region to surround the outer surface of the plasma discharge unit 100.
- the coil 130 may be formed of a conductor such as a copper wire, an iron wire, an aluminum wire, and the high frequency power may be supplied to the electrode unit 120 corresponding to the conductive region in the plasma discharge unit 100 to smoothly generate discharge.
- the adsorbent 110 may be filled only in the conductive region.
- the coil 130 may contact the ground electrode 131.
- the ground electrode 131 is an electrode embedded in the ground for grounding, and may be a metal rod, a metal plate, or a metal mesh, and the present invention may be a Y-shaped ground electrode 131.
- the electrode unit 120 of the present invention may extend into an inner passage of the plasma discharge unit 100 and may be a metal rod having the same axis as the plasma discharge unit 100.
- the metal rod may be made of stainless steel, copper, brass, bronze, tungsten or molybdenum.
- the electrode unit 120 may be connected to a voltage supply device 200 that generates plasma by supplying power to the plasma discharge unit 100.
- the voltage supply device 200 may additionally install an oscilloscope to output the change in the input voltage over time on the screen.
- the adsorbent 110 of the present invention accumulates ethylene and may be included in the plasma discharge part 100.
- various active components such as radicals, ions, high energy electrons, and excited molecules are generated, and these active components are used to initiate the decomposition reaction of ethylene or to oxidize the decomposition intermediate. And eventually oxidizes ethylene to carbon dioxide.
- the adsorbent 110 may be alumina, zeolite or a mixture thereof, the shape may be spherical or pellet form. For example, it may be a zeolite in pellet form.
- the zeolite may be 4A, Y, 13X, beta or gamma.
- the catalyst supported on the adsorbent 110 is activated by a plasma and thus exhibits a catalytic action even at a low temperature, so that the accumulated ethylene can be decomposed more quickly.
- a catalyst may be supported on the adsorbent 110 at a concentration of 0.2 to 10 wt%, and ethylene accumulated in the adsorbent 110 may generate H 2 O and CO 2 while being decomposed by plasma generation. .
- the catalyst is manganese dioxide (MnO 2 ), copper oxide (CuO), iron oxide (Fe 2 O 3 ), silver oxide (Ag 2 O), vanadium pentoxide (V 2 O 5 ), zinc oxide (ZnO) and titanium dioxide ( TiO 2 ) or a mixture thereof.
- the catalyst used for ethylene removal of the agricultural product storage facility 20 is required to be used at room temperature, unlike the catalyst for the synthesis reaction, so low temperature activity is required, as well as reliability and durability is required structure that can increase the mechanical stability is preferred.
- the present invention can be used to support the nano-sized catalyst in the adsorbent 110 in order to increase the mechanical stability, and to enable the catalyst to be activated at a low temperature by using plasma instead of heat for low temperature activity of the catalyst.
- the reaction temperature may be 30 to 90 °C.
- the adsorbent 110 may use zeolite, and nanosize silver oxide (Ag 2 O) may be used as the catalyst.
- the zeolite has a high specific surface area, and when a silver oxide (Ag 2 O) is loaded thereon, a highly dispersed nano catalyst can be prepared, and nano-sized silver oxide (Ag 2 O) is added to the zeolite adsorbent 110. When supported, the adsorption capacity is greatly increased, so that ethylene may be highly accumulated for a long time.
- a silver oxide Ag 2 O
- a highly dispersed nano catalyst can be prepared, and nano-sized silver oxide (Ag 2 O) is added to the zeolite adsorbent 110.
- the adsorption capacity is greatly increased, so that ethylene may be highly accumulated for a long time.
- the ethylene removal method of the present invention consumes only a short moment of decomposing ethylene accumulated in the adsorbent 110, power consumption is very low, and ethylene is rapidly removed because ethylene is decomposed by the catalytic action of plasma. Can be. In particular, aldehydes and organic acids, which are harmful by-products, are hardly generated by the catalytic action, and decomposed ethylene is completely oxidized to carbon dioxide.
- the ethylene removal method of the present invention includes (a) injecting a gas containing ethylene into the plasma discharge unit 100, and (b) injecting ethylene by generating plasma in the plasma discharge unit 100. Decomposing the (C) and cooling the plasma discharge unit (100). In particular, the three steps may be composed of repeating cycles.
- the adsorbent 110 Before injecting ethylene-containing gas into the plasma discharge unit 100, the adsorbent 110 must be filled, and a gas containing ethylene must be injected into the plasma discharge unit 100 filled with the adsorbent 110. . Then, the gas containing ethylene may accumulate in the adsorbent 110 on which the catalyst is supported.
- ethylene has a very high vapor pressure and generally has a low adsorption capacity in the adsorbent 110, but may increase the adsorption capacity when a nano-sized catalyst is supported on the zeolite or alumina of the present invention.
- the gas from which ethylene, which is not accumulated gas in the adsorbent 110, is removed may be recycled to the agricultural product storage facility 20, and when this step is completed, the inlet port may prevent the ethylene gas from flowing into the plasma discharge unit 100. Block 101).
- plasma may be generated in the plasma discharge unit 100 by applying a voltage to the electrode unit 120 of the present invention.
- air may be introduced into the plasma. That is, by introducing air into the plasma discharge unit 100 and applying an alternating current high voltage, ethylene accumulated in the adsorbent 110 may be oxidized with carbon dioxide and water vapor.
- the frequency of the AC high voltage applied to the electrode portion 120 needs to be appropriately adjusted. If the frequency is too high, power may be inefficiently consumed due to an electrical matching problem, and if the frequency is too low, plasma may not be generated because the gas may not be activated.
- the frequency applied to the electrode unit 120 is preferably 50Hz to 1000Hz.
- the plasma discharge unit 100 may be heated to 30 to 90 °C.
- the cooling of the plasma discharge part 100 may be performed because the ethylene adsorption performance of the adsorbent 110 decreases when the temperature is high. At this time, it can be cooled to 15 to 40 °C, and after the cooling step again by injecting a gas containing ethylene into the plasma discharge unit including the adsorbent 110 by accumulating ethylene in the adsorbent (110) Can be repeated
- the ethylene treatment apparatus of the present invention can sterilize various microorganisms suspended in the air of the agricultural product storage facility by plasma catalysis.
- the ethylene treatment apparatus can achieve both purposes of ethylene treatment and sterilization in one apparatus.
- a zeolite (Cosmo Fine chemical) was used as an adsorbent, and more specifically, 4X, Y, 13X, and beta (beta) were compared to a total of four zeolites, 13X having the highest adsorption performance on ethylene.
- the specific surface area of the 13X (Molecular Sieve 13X) was about 500 m 2 / g.
- Simulated ethylene gas was prepared by mixing nitrogen and ethylene. Specifically, 0.22 cm 3 / min of ethylene was mixed with 1 L / min of nitrogen to prepare an ethylene gas having a concentration of 220 ppm. Actual ethylene concentrations in agricultural storage facilities are well below 20 ppm.
- simulated ethylene gas was introduced into the plasma reaction unit for a predetermined time to be accumulated in the zeolite (step 1). At this time, the flow rate when the simulated ethylene gas was introduced into the plasma reaction unit was 1 L / min.
- the step of injecting simulated ethylene gas was terminated to stop the inflow of the simulated ethylene gas, and instead air (nitrogen: 80%, oxygen 20%) was supplied at 1 L / min.
- air nitrogen: 80%, oxygen 20%
- a high voltage was applied to the electrode unit 120 to generate a plasma in the plasma discharge unit (step 2).
- the AC high voltage was supplied by an AC power source and a transformer, and the voltage was observed by an oscilloscope (Tektronix TDS3032). After this step was completed, the plasma discharge unit was naturally cooled for 5 minutes (step 3).
- the supplied high voltage was 18.5kv based on the effective value, and the discharge power measured by the voltage-charge diagram was about 17W.
- the frequency of the alternating current high voltage supply device used in the experimental example of this invention was 400 Hz.
- step 2 the temperature of the plasma discharge part was raised to about 90 ° C. by the action of the plasma.
- step 3 the plasma discharge part was naturally cooled to 15-40 ° C. for 5 minutes. Steps 1 to 3 were repeated three times to decompose ethylene.
- Treated gases were analyzed sequentially through a Fourier transform infrared spectrometer (FTIR, Bruker IFS 66 / S) and gas chromatograph (GC, Bruker 450 GC) through the outlet of the ethylene treatment unit.
- FTIR Fourier transform infrared spectrometer
- GC gas chromatograph
- FIG. 5 is a graph showing the concentrations of CO 2 and CO generated when the adsorbed and accumulated ethylene is decomposed by a plasma / catalyst complex action.
- the ethylene adsorbed / accumulated to zeolite in step 1 is Most of them were oxidized to carbon dioxide. Some carbon monoxide was observed in addition to the carbon dioxide, and similar CO 2 and CO were observed even after repeated two and three cycles. More specifically, CO 2 accounted for 93.2% of the total gas discharged through the outlet, and CO accounted for 6.8%. Here, it was confirmed that the amount of CO generated is much smaller than that of CO 2 .
- energy yield is meant the amount of ethylene treated / injected electrical energy.
- the total adsorption amount was 18.7 mg
- the energy yield is therefore 0.92 mg / kJ.
- the energy yield is 0.037 mg / kJ.
- the present invention is much more economical when ethylene is treated by treating the plasma continuously.
- outlet 110 adsorbent
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Abstract
Description
Claims (11)
- 유입구 및 배출구가 형성되며, 내부에 흡착제가 충진되는 플라즈마 방전부; 및상기 플라즈마 방전부의 내부에 플라즈마를 발생시키는 전극부;를 포함하며,상기 흡착제는 촉매가 담지되어 있는 것을 특징으로 하는 에틸렌 처리장치.
- 제1항에 있어서,상기 플라즈마 방전부는소정면적에 도전영역이 형성되고, 상기 도전영역에는 상기 플라즈마 방전부의 외측 표면을 감싸도록 형성된 코일이 더 포함되는 것을 특징으로 하는 에틸렌 처리장치.
- 제2항에 있어서,상기 코일은구리선, 철선 또는 알루미늄선으로 이루어지며, 접지전극을 접촉하고 있는 것을 특징으로 하는 에틸렌 처리장치.
- 제1항에 있어서,상기 플라즈마 방전부는석영관, 유리관, 알루미나관 또는 세라믹관으로 이루어진 것을 특징으로 하는 에틸렌 처리장치.
- 제1항에 있어서,상기 전극부는상기 플라즈마 방전부의 내부 통로로 연장되며, 상기 플라즈마 방전부와 동일한 축의 금속봉인 것을 특징으로 하는 에틸렌 처리장치.
- 제1항에 있어서,상기 전극부는상기 플라즈마 방전부로 전력을 공급하여 플라즈마를 발생시키는 전압공급장치와 연결되는 것을 특징으로 하는 에틸렌 처리장치.
- 제1항에 있어서,상기 흡착제는구형 또는 펠릿 형태로 형성되며, 알루미나, 제올라이트 또는 이들의 혼합물인 것을 특징으로 하는 에틸렌 처리장치.
- 제1항에 있어서,상기 촉매는이산화망간(MnO2), 산화구리(CuO), 산화철(Fe2O3), 산화은(Ag2O), 오산화바나듐 (V2O5), 산화아연 (ZnO) 및 이산화티타늄 (TiO2) 중 어느 하나 또는 이들의 혼합물인 것을 특징으로 하는 에틸렌 처리장치.
- 제1항에 있어서,상기 촉매는0.2 내지 10 wt% 의 농도로 상기 흡착제에 담지되어 있는 것을 특징으로 하는 에틸렌 처리장치.
- 제1항 내지 제9항 중 어느 한 항에 따른 에틸렌 처리장치를 이용하여,(a) 상기 흡착제가 충진된 플라즈마 방전부 내에 에틸렌을 함유한 가스를 주입시키는 단계;(b) 상기 전극부에 전압을 인가하고, 상기 플라즈마 방전부 내에 플라즈마를 발생시켜 주입된 에틸렌을 분해하는 단계; 및(c) 상기 플라즈마 방전부를 냉각시키는 단계; 를 포함하는 에틸렌 처리방법.
- 제10항에 있어서,상기 에틸렌을 분해하는 단계는상기 플라즈마 반응부 내에 산소를 유입시키는 단계; 및상기 에틸렌은 상기 산소와 반응하여 이산화탄소와 수증기로 산화되는 단계; 를 포함하는 것을 특징으로 하는 에틸렌 처리방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP15852309.2A EP3210475B1 (en) | 2014-10-24 | 2015-10-22 | Ethylene disposal apparatus and ethylene disposal method using same |
US15/521,301 US10716312B2 (en) | 2014-10-24 | 2015-10-22 | Ethylene disposal apparatus and ethylene disposal method using same |
JP2017540955A JP6416405B2 (ja) | 2014-10-24 | 2015-10-22 | エチレン処理装置及びこれを利用したエチレン処理方法 |
CN201580057851.2A CN107105683A (zh) | 2014-10-24 | 2015-10-22 | 乙烯处理装置及利用其的乙烯处理方法 |
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KR1020140144961A KR101694113B1 (ko) | 2014-10-24 | 2014-10-24 | 에틸렌 처리장치 및 이를 이용한 에틸렌 처리방법 |
KR10-2014-0144961 | 2014-10-24 |
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EP (1) | EP3210475B1 (ko) |
JP (1) | JP6416405B2 (ko) |
KR (1) | KR101694113B1 (ko) |
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CN109776857B (zh) * | 2018-12-24 | 2020-10-27 | 厦门大学 | 等离子体塑料降解装置及其降解溶液配方 |
KR102165506B1 (ko) * | 2018-12-27 | 2020-10-14 | 한국기초과학지원연구원 | 플라즈마 기술 기반 스마트 저장 시스템과 저장 방법 |
KR102067407B1 (ko) * | 2019-02-11 | 2020-01-17 | (주)티앤제이티 | 플라즈마 발생기 |
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EP3210475A1 (en) | 2017-08-30 |
EP3210475B1 (en) | 2020-12-09 |
JP2018501955A (ja) | 2018-01-25 |
EP3210475A4 (en) | 2018-05-30 |
US10716312B2 (en) | 2020-07-21 |
CN107105683A (zh) | 2017-08-29 |
KR101694113B1 (ko) | 2017-01-10 |
JP6416405B2 (ja) | 2018-10-31 |
US20170325471A1 (en) | 2017-11-16 |
KR20160049092A (ko) | 2016-05-09 |
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