14 results about "Nonthermal plasma" patented technology

A method and system for carrying out non-thermal plasma direct reduction of ore ultrafines into resource material are described. In particular, the present invention is directed to a method for direct reduction of ultrafines using an integrated system including an ultrafines source and a non-thermal plasma source. The method includes delivering ultrafines to a reduction reaction zone; and applying, within the reduction reaction zone, a non-thermal plasma to the ultrafines.

An air treatment device for removing unwanted substances from air, the air treatment device comprising : a non-thermal plasma reactor stage housing comprising an air inlet for receiving the air to be treated, a plurality of non-thermal plasma reactor units for treating the air and an air outlet for exhausting the treated air from the non-thermal plasma reactor stage housing; wherein each of the plurality of non-thermal plasma reactor units comprises a dielectric substrate having a first surface and a second surface, a first electrode disposed on the first surface of the dielectric substrate and a second electrode disposed on the second surface of the dielectric substrate, wherein the first electrode comprises at least one window exposing the dielectric substrate to the air to be treated in the non-thermal plasma reactor stage housing.

A system configured to provide a non-thermal plasma from a variety of feed gases is described. The system includes a plasma applicator; a feed gas source providing a gas flow to the plasma applicator; a power supply configured to deliver electrical power via a transmission line to an electrode of the plasma applicator; a signal generator configured to provide a drive signal to the power supply; and a controller. The controller is configured to receive at least one input status parameter associated with a quality of plasma delivered by the plasma applicator; and provide at least one parameter value for at least one parameter defining an output signal waveform of the power supply. The at least one parameter value is taken from the group consisting of: duty factor, pulse rate, pulse width, pulse delay, pulse modulation and pulse shape.

A system and method is disclosed for decomposing feedstock material in a non-thermal plasma process, the system comprising a reaction chamber for receiving the feedstock material and an inductor locat

A system and a method are described for directly reducing non-ultrafine ore using a non-thermal plasma by a system for directly reducing non-ultrafine ore using a non-thermal plasma. The system includes: a non-ultrafine ore source; a power source driving a microwave antenna providing a high intensity electrical field for generating a non-thermal plasma; a gas source configured to supply hydrogen; and a cold plasma jet providing non-thermal hydrogen plasma. The method includes: providing, via the cold plasma jet, a non-thermal plasma to a reaction chamber; providing, via a feed, non-ultrafine ore to the reaction chamber; and obtaining a reduced ore from the reaction chamber. The reduced ore is obtained by application of the non-thermal hydrogen plasma to the non-ultrafine ore for at least multiple seconds to allow for generation of fractures in particles of the non-ultrafine ore.

The application belongs to the technical field of electro-catalytic material and functional film preparation, and particularly relates to a method for in-situ construction of Ni-LDH film electrode by oxygen non-thermal plasma induction and application of the method in alkaline oxygen evolution reaction. The method comprises the following steps: adding ethanolamine into propionic acid, adding a nickel source, and preparing a nickel-containing precursor solution under the condition of heating and stirring; aging and centrifuging the precursor solution, and taking supernatant as a film-forming sol; spin-coating the film-forming sol on a substrate surface and drying to obtain a precursor film; and placing the precursor film in a microwave non-thermal plasma under an oxygen atmosphere, and in-situ converting the precursor film into a Ni-LDH film electrode containing interlayer anions. The method does not need high-temperature annealing and subsequent hydrothermal activation, and can directly obtain a Ni-LDH film with characteristics of layered double hydroxide. The obtained film shows good oxygen evolution catalytic activity and stability in an alkaline electrolyte, and has an overpotential less than 350 mV and a Tafel slope less than 80 mV / dec under a current density of 10 mA / cm2.

A method and system for carrying out non-thermal plasma direct reduction of ore ultrafines into resource material are described. In particular, the present invention is directed to a method for direct reduction of ultrafines using an integrated system including an ultrafines source and a non-thermal plasma source. The method includes delivering ultrafines to a reduction reaction zone; and applying, within the reduction reaction zone, a non-thermal plasma to the ultrafines.

The invention discloses a method and a system for producing hydrogen by cracking methane through synergy of non-thermal plasma and a catalyst, and the method comprises the following steps: placing a nickel-based catalyst in a dielectric barrier discharge reactor, and introducing a mixed gas of methane and a carrier gas into the dielectric barrier discharge reactor; the plasma generator is started, non-thermal plasma is generated by ionization in the dielectric barrier discharge reactor, and methane is subjected to cracking reaction under the synergistic effect of the non-thermal plasma and the catalyst to obtain carbon and H2. The nickel-based catalyst with a specific structure is introduced into the DBD plasma, so that efficient methane conversion and high-selectivity hydrogen generation at low temperature and low energy consumption are realized, and the problems of high energy consumption and high carbon emission of a traditional thermal catalysis method and low conversion rate and selectivity of a pure plasma method are solved.

An air treatment device for removing unwanted substances from air, the air treatment device comprising: a non-thermal plasma reactor stage housing comprising an air inlet for receiving the air to be treated, a plurality of non-thermal plasma reactor units for treating the air and an air outlet for exhausting the treated air from the non-thermal plasma reactor stage housing; wherein each of the plurality of non-thermal plasma reactor units comprises a dielectric substrate having a first surface and a second surface, a first electrode disposed on the first surface of the dielectric substrate and a second electrode disposed on the second surface of the dielectric substrate, wherein the first electrode comprises at least one window exposing the dielectric substrate to the air to be treated in the non-thermal plasma reactor stage housing.

The invention relates to a method (1000) for generating a nuclease-free surface, wherein the method comprises: generating (1100) a first non-thermal plasma (10) at atmospheric pressure, wherein the first non-thermal plasma (10) is generated at a first power on a discharge surface; generating (1200) a second non-thermal plasma (20) at atmospheric pressure, wherein the second non-thermal plasma (20) is generated at a second power on the discharge surface, wherein the second power is higher than the first power; generating (1300) a plasma stream (26) from the first non-thermal plasma and the second non-thermal plasma; conducting (1400) the plasma stream (26) to a surface (102, 104) to be cleaned; and inactivating (1500) nucleases on the surface (102, 104, 106) to be cleaned.

The present disclosure relates to apparatus, systems, and methods for producing non-thermal plasmas (NTPs) at greater than atmospheric pressure. In some embodiments, an apparatus comprises a first chamber that defines a variable, an actuator, and a plasma generator. The actuator is configured to transiently vary a pressure within the variable volume of the first chamber. The plasma generator is configured to produce plasma within at least one of the variable volume of the first chamber or a volume of a second chamber. The plasma generator is in selective fluid communication with the variable volume of the first chamber.

Systems and methods for converting methane and hydrogen sulfide to hydrogen and poly carbon subsulfide. An exemplary system includes a non-thermal plasma reactor, a first feed stream including methane, a second feed stream including hydrogen sulfide, a catalyst support material selected from boron nitride, carbon black, graphene, aluminum oxide (Al2O3) or titanium dioxide TiO2, and a catalyst selected from Ru, Rh, Ir, Pd, Pt, Re, Mo, Ni, Co, W and combinations thereof. An exemplary method includes providing a first feed stream including methane to a reactor, providing a second feed stream including hydrogen sulfide to the reactor, and reacting the first feed stream and the second feed stream in a non-thermal plasma in the presence of a catalyst to produce a product stream including hydrogen and poly carbon subsulfide.

The invention discloses a catalyst for nitrogen fixation in a non-thermal plasma environment, a catalytic material, a catalytic system and a low-temperature nitrogen fixation method, and the catalyst can promote nitrogen and oxygen to be activated and converted into nitrogen oxides through redox cycles and defect sites on the surface of the catalyst. The non-thermal plasma can directly realize nitrogen fixation from air at a temperature close to the ambient temperature. The dielectric barrier discharge reactor is coupled with manganese doped TiO2 (Mn-TiO2) to guide the NOx pathway to generate nitrate. The comprehensive characterization associates performance with lattice distortion, rich oxygen vacancies, and Mn < 2 + > / Mn < 3 + > / Mn < 4 + > redox cycles. Compared with pure plasma and pure TiO2, the Mn-TiO2 has the advantages that higher NO2 <-> / NO3 <-> formation rate (37.77 / 151.20 mol / h), higher yield (0.02% / 0.09%) and higher energy efficiency (50.40 mmol / kWh) are realized at the temperature of 56.9 DEG C.

Systems and methods for converting methane and hydrogen sulfide to hydrogen and poly carbon subsulfide. An exemplary system includes a non-thermal plasma reactor, a first feed stream including methane, a second feed stream including hydrogen sulfide, a catalyst support material selected from boron nitride, carbon black, graphene, aluminum oxide (AI2O3) or titanium dioxide TiC2, and a catalyst selected from Ru, Rh, Ir, Pd, Pt, Re, Mo, Ni, Co, W and combinations thereof. An exemplary method includes providing a first feed stream including methane to a reactor, providing a second feed stream including hydrogen sulfide to the reactor, and reacting the first feed stream and the second feed stream in a non- thermal plasma in the presence of a catalyst to produce a product stream including hydrogen and poly carbon subsulfide.