47 results about "Electron beam accelerator" patented technology

A method and apparatus for the continuous feeding of polymer chips or particles to an electron beam accelerator makes use of spreading, belt conveying, irradiation and cooling. The apparatus is designed to make more efficient use of radiation through continuous feed. This method and apparatus, suitably adapted, is also used for food irradiation and decontamination, particularly for ground meats.

A standing wave electron beam accelerator and x-ray source is described. The accelerator has a plurality of on-axis resonant cells having axial apertures electrically coupled to one another by on-axis coupling cells having axial apertures. The accelerator includes a buncher cavity defined in part by an apertured anode and a half cell. The buncher cavity is configured to receive electrons injected through said anode aperture and r.f. focus them into a beam which is projected along the axis through said apertures. An x-ray target is supported in spaced relationship to said accelerator by a support having a smaller diameter than the accelerator.

The invention discloses a processing craft with rice straw or corn or sorghum straw to produce industrial alcohol, which comprises the following steps: pressing the rice straw and straw to brick; disposing with 60Co-gama ray of 0.5-2.0X106Gy or electron-beam accelerator; grinding with mechanical; screening through 200 order sieve; leaching with hot water; stripping lignin with alcohol; degrading enzyme; separating 1-2 mu m cord hole film; synchronous-saccharifying saccharomyces cerevisiae and pichia; dispersing and yeasting; dewatering and separating the alcohol; getting the product.

In one aspect, there is provided assembling an analyte sensor with an analyte sensor insertion device, packaging the assembled analyte sensor and sensor insertion device in a substantially airtight seal, and irradiating the packaged assembled analyte sensor and sensor insertion device at a predetermined dose using one or more electron beam accelerators.

The invention discloses an ethylene propylene diene monomer rubber composite material and a preparation method thereof. The preparation method is characterized by comprising the following steps: pretreating fabric-type carbon fibers by using a solubilizer, compounding ethylene propylene diene monomer rubber and a radiation sensitizer, putting in a mold, calendering into sheets, sandwiching the pretreated fabric-type carbon fibers between the two ethylene propylene diene monomer rubber sheets, putting in the mold, and calendering into a sheet; after the sheet is cooled to room temperature, carrying out plastic packaging, putting in a gamma-ray radiation field or electron-beam accelerator, and carrying out radiation crosslinking while keeping the total absorbed dose at 50-200 kGy; and after finishing radiation, removing the plastic package, and cutting off the edge, thereby obtaining the semitransparent ethylene propylene diene monomer rubber composite material. The composite material has excellent mechanical properties. By using the fabric-type carbon fibers as the reinforcing agent, the prepared ethylene propylene diene monomer rubber composite material is semitransparent. Meanwhile, the preparation method has the advantages of simple preparation process control and favorable repetitiveness.

A continuous sterilization system is provided which reliably supports a sterilization target so that the sterilization target is not tipped over during a sterilization process and can stably ensure uniform irradiation periods on any portion of inner and outer surfaces and moreover, a portion sterilized by electron beam irradiation is not contaminated again. The continuous sterilization system is provided with a first conveying means, a first electron beam accelerator, a second conveying means, a second electron beam accelerator, and a third electron beam accelerator.

An apparatus and a method of sterilizing inner walls of containers, wherein the apparatus has at least one electron beam emitter with at least one electron beam accelerator and an outlet window for the electron beams, a conveying device for conveying the containers to be sterilized and a reciprocating device for permitting a relative movement between the containers and the outlet window in a longitudinal direction of the containers. A reflector apparatus is connected to the electron beam emitter in a positively locking and / or friction locking manner at least locally in a region of the outlet window and is capable of being introduced at least locally during a defined period of time into an interior space of the container to be sterilized, in order to apply the electron beams to the inner walls of the container.

The invention discloses a carbon-based porous flexible composite wave-absorbing material and a preparation method thereof. The carbon-based porous flexible composite wave-absorbing material and the preparation method thereof are characterized in that pretreatment is conducted on one part of a carbon-based wave-absorbing agent, and then mixing molding is conducted on the treated carbon-based wave-absorbing agent, 0.2-0.4 part of a fluxing agent, 40-100 parts of silicone rubber, 10-30 parts of reinforcing agents, 0-5 parts of radiosensitizer and 0-3 parts of flame retardants; rubber materials molded through mixing are put into a mold, rolling is conducted on the rubber materials at 100-150 kg.cm<-2>, and a thin sheet with the thickness ranging from 0.5 mm to 5 mm is prepared; after plastic sealing is conducted on the thin sheet with the mold, the plastic-sealed thin sheet with the mold is put into a gamma-ray irradiation field or an electron beam accelerator to enable the total absorbed dose to be kept at 30-100 kGy, radiation crosslinking is conducted, after a plastic package and the mold are removed, edges are cut off, and the carbon-based porous flexible composite wave-absorbing material is obtained. According to the carbon-based porous flexible composite wave-absorbing material and the preparation method thereof, the technology is simple, complex chemical process control or professional auxiliary equipment is not needed, only simple equipment such as a double-roller mixing mill is needed, and the cost is lower; the prepared material is excellent in flexibility and wave-absorbing performance, the preparation process is easy and rapid to control, the repeatability is good, and energy conservation and environment protection are achieved.

The invention relates to a preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber. The preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber is characterized by comprising the following steps: 1) blending spinning solution preparation: based on the mass parts of the polyacrylonitrile powder and the phosphorus-containing flame retardant, dissolving 65-80 parts of polyacrylonitrile powder and 20-35 parts of phosphorus-containing flame retardant into a 50-52wt% sodium thiocyanate aqueous solution, and mixing to obtain the blending spinning solution, wherein the ratio of the total mass of the polyacrylonitrile powder and the phosphorus-containing flame retardant to the mass of the 50-52wt% sodium thiocyanate aqueous solution is (10-15):100; 2) wet spinning; and 3) irradiation: irradiating primary flame-retardant polyacrylonitrile fiber in an electron beam accelerator with 0.5-5MeV or a <60>Co device to obtain thedurable low-smoke halogen-free flame-retardant polyacrylonitrile fiber, wherein the irradiation dose is 20-50kGy. The fiber prepared by using the method has good flame-retardant durability and small smoke generation property.

Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful intermediates and products, such as energy, fuels, foods or materials. For example, systems and methods are described that can be used to treat feedstock materials, such as cellulosic and / or lignocellulosic materials, while cooling equipment and the biomass to prevent overheating and possible distortion and / or degradation. The biomass is conveyed by a conveyor, which conveys the biomass under an electron beam from an electron beam accelerator. The conveyor can be cooled with cooling fluid. The conveyor can also vibrate to facilitate exposure to the electron beam. The conveyor can be configured as a trough that can be optionally cooled.

The invention relates to a method for degrading drug residue prednisone in waste water by utilizing irradiation. The method provided by the invention comprises that irradiation treatment is carried out on a waste water solution containing prednisone pollutant by adopting a certain dosage electron beam accelerator irradiation technology, so that prednisone in the waste water solution is decomposed. By adopting the method provided by the invention, the prednisone in the waste water solution can be quickly and effectively degraded by virtue of low dosage irradiation, so that the concentration of prednisone in the waste water solution can meet safety and emission standards; and the operation is easy, no toxicity is added, and no residual harm is done.

The invention provides a plastic water meter housing which has a structure as follows: a positioning mechanism between the prior plastic water meter housing and a water meter cassette mechanism case body is rearranged at the outer side of a cavity opening of the plastic water meter housing or the lower side inside the cavity opening; a ring-shaped groove and an O-shaped obturating ring are arranged between the inner side of the cavity opening of the plastic water meter housing and the water meter cassette mechanism; the jetting-moulding plastic water meter housing is put inside an electron beam accelerator and the electron beam is adopted to realize radiation crosslinking, which greatly increases the pressure-proof grade of the whole structure of the water meter and ensures that the ABS engineering plastics water meter housing does not leak for a long time under the pressure higher than 3MPa. A special compression-resist detecting bracket is also designed so that the plastic water meter can realize calibration and detection on the prior meter checking and detecting stage. The production efficiency is high, the energy consumption is low, the specific gravity is light, the rustiness is avoided, the corrosion resistance is realized, the finished product has high accuracy and delicate appearance, and the water meter with a plastic housing and low price can replace the water meter with a metal housing and is used in households.

The invention relates to a method for treating ofloxacin-containing waste water with an electron beam irradiation technology to allow the waste water to directly reach a drinking water standard. The method mainly comprises the steps of performing irradiation treatment on a water body containing an ofloxacin pollutant through an electron beam accelerator irradiation technology to decompose ofloxacin in the water body, and allowing the electron beam accelerator irradiation dose to be below 15kGy. A flocculant is added into the water body and settling and filtration are performed before irradiation treatment of the ofloxacin-containing water body, the treated water body is introduced to a terminal treatment system after the irradiation treatment of the water body, and the settling, filtration and then discharge are performed. The method is used for treating the ofloxacin pollutant in the drinking water body by the electron accelerator irradiation technology, can quickly and effectively degrade ofloxacin in the water body through low-dose irradiation and can completely degrade low-concentration ofloxacin in the water body by 6kGy low irradiation dose, allows the water body to reach the drinking water standard, is easy to operate, and does not produce toxicity or residual harm.

The invention relates to an electron beam modification method for reducing rolling resistance of a tire tread rubber material and improving abrasion resistance. The method comprises the steps of placing tire tread vulcanized rubber on a conveyor belt, and conducting irradiation modification on the vulcanized rubber through a scanning window of an electron beam accelerator mounted in an irradiation room. A cross-linking network of a rubber composite is improved, the interaction between the rubber and a filler is improved, the rolling resistance is reduced, and the abrasion resistance is improved. With the simple and effective electron beam irradiation method, the rolling resistance of a tread is reduced, the abrasion resistance is improved, and a novel technological approach is provided for surface modification of a finished tire.

The invention relates to a method for degrading hormone medicine progesterone in wastewater by using irradiation. The method comprises the step of carrying out irradiation treatment on a wastewater solution containing a progesterone pollutant by using a certain dosage of electron beam accelerator irradiation technology, so that the progesterone in the wastewater solution is degraded through irradiation. The method can be used for rapidly and effectively degrading the progesterone in wastewater through low-dosage irradiation, so that the concentration of the progesterone in wastewater reaches the safe emission standards. The method is easy in operation and has no addition toxicity and residual damage.

A ceramic electron beam accelerator is disclosed finding particularly efficacious uses in X-ray electronic circuit imaging and testing applications. The ceramic stage design eliminates the need for placing metal reinforcements between adjoining stages of the accelerator, thereby increasing the accelerator's mechanical robustness and reliability, while also reducing manufacturing costs.

A device for transport of an electron beam from an accelerator to a product to be irradiated, comprised of a passive plasma channel for forming a low density plasma by ionizing gas molecules in a chamber under low pressure conditions. The device being adjustable in size such that the chamber formed by the device occupies a majority of the distance between the e-beam accelerator and the product to be irradiated.

Methods and systems for realizing a high brightness, compact x-ray source suitable for high throughput, in-line x-ray metrology are presented herein. A compact electron beam accelerator is coupled to a compact undulator to produce a high brightness, compact x-ray source capable of generating x-ray radiation with wavelengths of approximately one Angstrom or less with a flux of at least 1e10 photons / s*mm^2. In some embodiments, the electron path length through the electron beam accelerator is less than ten meters and the electron path length through the undulator is also less than 10 meters. The compact x-ray source is tunable, allowing for adjustments of both wavelength and flux of the generated x-ray radiation. The x-ray radiation generated by the compact x-ray source is delivered to the specimen over a small spot, thus enabling measurements of modern semiconductor structures.

The invention discloses an electron beam radiation shield device based on continuous production. The electron beam radiation shield device comprises a control module and a conveying assembly used forconveying a workpiece. The conveying assembly comprises multiple conveying rollers which are arranged at intervals. A shielding cover is arranged on the outer side of the conveying assembly in a covering manner. A conveying channel is arranged in the shielding cover, and a feeding opening and a discharging opening are formed in the positions, at the two ends of the shielding cover, of the conveying channel. The conveying channel comprises a feeding area, a radiation machining area and a discharging area arranged in the conveying direction. An electron beam accelerator is arranged in the radiation machining area. Two shielding assemblies are arranged in each of the feeding area and the discharging area. Each shielding assembly comprises a shielding door used for blocking the conveying channel and a driver used for driving the shielding door to be opened or closed. The distance between the two shielding doors in the feeding area and the distance between the two shielding doors in the discharging area are larger than the length of the workpiece. Each shielding assembly further comprises a workpiece inductor, wherein the workpiece inductor and the corresponding driver are connected with a control module. By means of the electron beam radiation shield device, the shielding effect is ensured, and meanwhile the stability and production efficiency of a production line are improved.

The invention relates to a device and method for sterilization of the internal walls of containers with a reflector device for e-beam. The apparatus and the method of sterilizing inner walls of containers, wherein the apparatus has at least one electron beam emitter with at least one electron beam accelerator and an outlet window for the electron beams, a conveying device for conveying the containers to be sterilized and a reciprocating device for permitting a relative movement between the containers and the outlet window in a longitudinal direction of the containers. A reflector apparatus is connected to the electron beam emitter in a positively locking and / or friction locking manner at least locally in a region of the outlet window and is capable of being introduced at least locally during a defined period of time into an interior space of the container to be sterilized, in order to apply the electron beams to the inner walls of the container.

Methods and systems are described for processing cellulosic and lignocellulosic materials and useful intermediates and products, such as energy and fuels. For example, irradiating methods and systems are described to aid in the processing of the cellulosic and lignocellulosic materials. The electron beam accelerator has multiple windows foils and these foils are cooled with cooling gas. In one configuration a secondary foil is integral to the electron beam accelerator and in another configuration the secondary foil is part of the enclosure for the biomass conveying system.

Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful intermediates and products, such as energy, fuels, foods or materials. For example, systems and methods are described that can be used to treat feedstock materials, such as cellulosic and / or lignocellulosic materials, while cooling equipment and the biomass to prevent overheating and possible distortion and / or degradation. The biomass is conveyed by a conveyor, which conveys the biomass under 10 an electron beam from an electron beam accelerator. The conveyor can be cooled with cooling fluid. The conveyor can also vibrate to facilitate exposure to the electron beam. The conveyor can be configured as a trough that can be optionally cooled.

Provided is an irradiation-crosslinked ethylene propylene diene monomer (EPDM) composition containing: EPDM 30 to 80 phr (parts per hundred resin) free of a crosslinking agent, a polyolefin (PO) resin 10 to 50 phr, a silicone rubber 5 to 40 phr, a flame retardant 20 to 30 phr, a crosslinking accelerator 5 to 10 phr, a crosslinking assistant 1 to 5 phr, an antioxidant 5 to 15 phr, and a lubricant 0.25 to 5 phr. Provided is a cable produced by: providing the irradiation-crosslinked EPDM composition; first kneading the composition using a kneader; second kneading the first kneaded composition using a roll mill; extruding the second kneaded composition using an extruder, and then cutting the extruded composition to produce pellets as a raw material for the cable; forming a cable of a predetermined length by extruding the pellets using an extruder; and irradiation-crosslinking the formed cable using an electron beam accelerator.

The invention relates to the field of adhesives, in particular to an electron beam curing type acrylate adhesive and application thereof. The adhesive is prepared from the following raw materials in parts by weight: 55-70 parts of allyl monomers, 20-40 parts of a solvent and 2-4 parts of an initiator, and the allyl monomers comprise alkyl acrylate and acrylic acid. According to the invention, electron beams are adopted to radiate the acrylate adhesive to form the adhesive polymer film, so that the adhesive product is prepared, the obtained adhesive can be directly formed on a substrate, many intermediate steps for preparing a traditional pressure-sensitive adhesive can be omitted, and the production cost is reduced. And the adhesive layer of the adhesive tape can be cross-linked, cured and dried by radiation of the electron beam accelerator, so that all functions of a traditional coating machine oven are completed. 100% curing is achieved, no residue, no initiator, no odor and no voc emission are truly achieved, and compared with a traditional adhesive, the adhesive is more energy-saving and environmentally friendly and has better weather resistance.

The embodiment of the invention provides an electron beam detecting system comprising an electron collecting device, a sampling box, a communication box, and a controller. The electron collecting device, together with an electron beam accelerator, is arranged in a shielding room and is used for detecting the intensity of an electron beam radiated by the electron beam accelerator to obtain a first signal. The sampling box that is arranged in the shielding room and is connected with the electron collecting device is used for receiving the first signal and converting the first signal into a second signal that is in an optical signal manner and can reflect the irradiation uniformity of the electron beam. The communication box that is arranged outside the shielding room and is connected with the sampling box by a fiber is used for receiving the second signal by the fiber and converting the second signal into a third signal in an electric signal manner. The controller that is arranged outside the shielding room and is connected with the communication box is used for receiving the third signal. Therefore, the detection control of the electron beam is realized.

The invention relates to charged particle beam accelerators, in particular electron beam accelerators, and can be used for physics, chemistry and medicine. The inventive charged particle beam accelerator comprises a metallic shell fitted with a dielectric material layer arranged therein, and a vacuum channel for electron transit embodied along the central symmetry axis of said metallic shell. In addition, the metallic shell is fitted with a ferroelectric material layer arranged therein. Said ferroelectric material layer can be arranged between the metallic shell and the dielectric material layer or in said dielectric material layer. The invention provides an object with a very important property, i.e. said property makes it possible to control the accelerator parameters and regulate the phase balance of the charged particle beam and the wave that accelerates the particles.

The invention discloses a carbon-based porous flexible composite wave-absorbing material and a preparation method thereof. The carbon-based porous flexible composite wave-absorbing material and the preparation method thereof are characterized in that pretreatment is conducted on one part of a carbon-based wave-absorbing agent, and then mixing molding is conducted on the treated carbon-based wave-absorbing agent, 0.2-0.4 part of a fluxing agent, 40-100 parts of silicone rubber, 10-30 parts of reinforcing agents, 0-5 parts of radiosensitizer and 0-3 parts of flame retardants; rubber materials molded through mixing are put into a mold, rolling is conducted on the rubber materials at 100-150 kg.cm<-2>, and a thin sheet with the thickness ranging from 0.5 mm to 5 mm is prepared; after plastic sealing is conducted on the thin sheet with the mold, the plastic-sealed thin sheet with the mold is put into a gamma-ray irradiation field or an electron beam accelerator to enable the total absorbed dose to be kept at 30-100 kGy, radiation crosslinking is conducted, after a plastic package and the mold are removed, edges are cut off, and the carbon-based porous flexible composite wave-absorbing material is obtained. According to the carbon-based porous flexible composite wave-absorbing material and the preparation method thereof, the technology is simple, complex chemical process control or professional auxiliary equipment is not needed, only simple equipment such as a double-roller mixing mill is needed, and the cost is lower; the prepared material is excellent in flexibility and wave-absorbing performance, the preparation process is easy and rapid to control, the repeatability is good, and energy conservation and environment protection are achieved.