10 results about "Hexafluoride" patented technology

The invention discloses an environment-friendly gas ring main unit with a gas leakage alarm function, and belongs to the technical field of gas ring main units, the environment-friendly gas ring main unit with the gas leakage alarm function comprises a ring main unit body, the ring main unit body comprises a normal pressure cavity and a sealing cavity, the sealing cavity is filled with environment-friendly gas sulfur hexafluoride, and the normal pressure cavity is communicated with the normal pressure cavity. An emergency box is arranged on the side wall of the ring main unit body, a placement groove is formed in the side wall of the side, away from the ring main unit body, of the emergency box, the side wall of the air storage tank communicates with an air outlet pipe, and an emergency structure is arranged in the sealing box. The emergency box is arranged on the side wall of the ring main unit body, so that after the ring main unit body accidentally leaks gas, an emergency structure in the emergency box can be triggered to warn workers, environment-friendly gas is supplemented into the sealing cavity of the ring main unit body, and if external oxygen enters the sealing cavity, the sealing cavity is sealed by the sealing cavity. And oxygen can be consumed through chemical reaction, so that the safety of workers during maintenance of the ring main unit body is ensured.

A container for storing high assay low enriched uranium hexafluoride (UF6) has a cylindrical lateral wall extending between first and second heads defining a container interior for receiving the radioactive material. A plurality of cylindrical poison rods extend in parallel through the container interior. Each of the poison rods has a neutron absorber. A plurality of access nozzles are situated within the first head and / or second head. Each of the access nozzles has a lateral wall defining a throughway that extends through the first head between an interior end region and an exterior end region. The interior end region captures and supports a respective end of a respective poison rod. The exterior end region is opened and closed via respectively detaching and attaching an end cap to thereby respectively expose and contain the respective poison rod.

The application discloses an environment-friendly gas ring main unit with a gas leakage alarm function and belongs to the technical field of gas ring main units. The environment-friendly gas ring main unit with the gas leakage alarm function comprises a ring main unit body, wherein the ring main unit body comprises a normal-pressure cavity and a sealed cavity, the sealed cavity is filled with environment-friendly gas hexafluoride sulfur, an emergency box is arranged on the side wall of the ring main unit body, a placing groove is formed in the side wall of the emergency box away from the ring main unit body, a gas outlet pipe is in communication with the side wall of a gas storage tank, and an emergency structure is arranged in the sealed box. The emergency box arranged on the side wall of the ring main unit body can trigger the emergency structure in the emergency box after accidental gas leakage of the ring main unit body, thereby warning the staff and supplementing the environment-friendly gas in the sealed cavity of the ring main unit body. If the oxygen in the outside world enters the sealed cavity, the oxygen can be consumed through a chemical reaction, thereby ensuring the safety of the staff when repairing the ring main unit body.

This invention relates to the field of uranium resource technology, and more particularly to a direct reduction and conversion system for depleted uranium hexafluoride and its method of use. It includes: a liquid sodium supply unit for providing molten liquid sodium; a gaseous DUF6 supply unit for providing DUF6 that has been heated and stabilized to a gaseous state; a sodium thermal reduction reaction unit connected to both the liquid sodium supply unit and the gaseous DUF6 supply unit, wherein the liquid sodium and gaseous DUF6 react in the sodium thermal reduction reaction unit; a product separation unit connected to the sodium thermal reduction reaction unit for separating and classifying the solid products generated in the sodium thermal reduction reaction unit; and a tail gas recovery unit connected to the sodium thermal reduction reaction unit for condensing the gas discharged from the sodium thermal reduction reaction unit to obtain condensate, collecting sodium vapor and other volatile substances in the gas, purifying the gas, and discharging it after testing to ensure it meets emission standards. This method has a simple process, optimized reaction conditions, and is easier to implement.

The invention belongs to the field of power transmission, and particularly relates to a GIL pipe gallery sulfur hexafluoride discharging system. According to the GIL pipe gallery sulfur hexafluoride discharging system, through cooperation of the GIL pipe gallery, the sulfur hexafluoride discharging pipeline, the flow guide pipe, the sulfur hexafluoride detector, the discharging fan, the sulfur hexafluoride removing device and the like, when the sulfur hexafluoride detector detects that sulfur hexafluoride leaks, the sulfur hexafluoride removing device is started, the discharging fan is started, negative pressure is formed in the flow guide pipe, and the sulfur hexafluoride is discharged. Sulfur hexafluoride flows into the sulfur hexafluoride discharging pipeline from the flow guide pipe to be discharged, and the sulfur hexafluoride is removed when passing through the sulfur hexafluoride removing device, so that the sulfur hexafluoride is prevented from flowing into the atmosphere to cause the greenhouse effect, and the sulfur hexafluoride is prevented from depositing in the power transmission tunnel to cause potential safety hazards.

The application discloses a kind of based on the leakage experimental device of hexafluoride uranium of multi-prism, comprising: multi-prism, the number of side edge of multi-prism is the positive integer multiple of 8;Multi-prism is equipped with chamber inside;The side surface of multi-prism includes a particle size measurement laser emitting surface and a particle size measurement laser receiving surface;Particle size measurement laser emitting surface and particle size measurement laser receiving surface are oppositely arranged on particle size measurement laser receiving surface, and laser emitting interface is further provided on particle size measurement laser receiving surface, and the laser beam emitted by laser emitting interface is parallel to the laser beam emitted by particle size measurement laser emitting surface;The side surface of multi-prism further includes observation surface and sampling surface;Observation surface and particle size measurement laser receiving surface are perpendicular to each other;Hexafluoride uranium release pipeline is circumscribed on one end surface of multi-prism;Hexafluoride uranium inlet is communicated with chamber;Water vapor pipeline, water vapor pipeline is connected with hexafluoride uranium inlet on the same end surface;Water vapor pipeline is communicated with chamber.

The lean hexafluoride uranium stabilized disposal system comprises a precipitation reaction assembly, a solid-liquid separation device, a filtrate treatment assembly and a precipitation treatment assembly; the precipitation reaction assembly comprises a lean hexafluoride uranium gasification device, a first-stage stirring tank and a second-stage stirring tank; the solid-liquid separation device comprises a solid-liquid separator and a plate filter A; the filtrate treatment assembly comprises a crystallization tank, a plate filter B and a microwave dryer B; and the precipitation treatment assembly comprises a microwave dryer A, a reduction furnace and a leaching tower. The lean hexafluoride uranium with high storage difficulty is converted into the stable solid uranium trioxide octaoxide, the safe disposal of the lean hexafluoride uranium is realized, the required amount of the lean hexafluoride uranium container is reduced, and the container disposal cost is reduced.

The discovery of a method and the invention of a system for obtaining very high selectivity—and dissociation of the desired 235UF6 isotope in the Molecular Laser Isotope Separation (MLIS) process of the Uranium Hexafluoride (UF6) isotopes, in a single highly selective step, is described. The principle of the process and the concept of the invention are very simple: At temperatures below 100° K., and. preferably in the region of 60° K, nearly all the molecules of the expansion supercooled UE6 gas are in the ground state enabling the principles of the invention to be practically applied without-any ‘interference from other inherent, processes. Then the frequency of the selecting laser must be at 628.527 cm−1, or very close to it, for a three-photon absorption resonance with the [m(A2):(3V3)] sublevel of the third energy excitation state of the desired 235UF6 isotope. The fixing of the frequency of the selecting laser is the first basic step of the invention. The second basic step is to increase the pumping intensity of the selecting laser to a. level at which the—three-photon absorption resonance with the [m(A2):(3V3)]sublevel, of the desired 235UF6 isotope is established, elevating the molecules of the desired isotope 235UF6 to the third energy excitation state. This is achieved through the power broadening at the fundamental and the second energy excitation level as the pumping intensity of the selecting laser is increased and as a consequence of the proximity of these levels to ‘the pumping frequency. There is an intensity range for the selecting laser within which the molecules of the desired 235UF6 isotope can be selectively elevated to the third energy level through the establishment of a three-photon absorption resonance without disturbing the molecules of the unwanted, isotope 238UF6, leaving them unexcited. The selectively excited molecules of the desired 235UF6 isotope are then driven to dissociation through, the higher vibrational levels of the v3-vibrational mode and. the quasicontinuum of energy states, by a simultaneously applied dissociating laser whose exact intensity and optimum frequency can again be experimentally determined, or by any other dissociation or separation-process following the original excitation of the 235UF6 molecules to the ‘third energy excitation state (3v3) through three-photon resonance with the [m(A2):(3V3)] sublevel. The process is unique in that it can be applied, to the treatment and separation of the desired 235UF6 isotope from the Tails percentages of any isotope separation process. The method may also be. applicable to the SILEX system for enhancing the selectivity and efficiency of the process. The simplicity and versatility of the method enables: it to be applied to the separation of other hexafluoride isotopes or similar polyatomic molecules.

The invention provides a method for preparing nuclear pure grade uranium hexafluoride, which comprises the following steps: (1) adding fluoride containing molybdenum, tungsten, vanadium, titanium, chromium and antimony and crude uranium hexafluoride of hydrogen fluoride impurities into a distillation kettle, and carrying out pressurized distillation to obtain a gaseous mixture; (2) introducing the gaseous mixture obtained in the step (1) into a calcium fluoride adsorption column, and removing hydrogen fluoride in the mixture through selective adsorption of calcium fluoride; and (3) carrying out single-tower pressurized distillation on the gaseous mixture treated in the step (2) to obtain nuclear pure grade uranium hexafluoride. The method solves the problems of low uranium hexafluoride purity, high energy consumption and high cost of the existing uranium purification conversion technology in the conversion technology of the high-impurity-content natural uranium concentrate, realizes cost reduction and efficiency improvement of uranium hexafluoride purification on the premise of ensuring that uranium hexafluoride reaches the nuclear purity grade standard, and has a wide application prospect. Rapid popularization of a dry uranium purification and conversion process is boosted, and the technical level of uranium purification and conversion in China is further improved.

A container for storing high assay low enriched uranium hexafluoride (UF6) has a cylindrical lateral wall extending between first and second heads defining a container interior for receiving the radioactive material. A plurality of cylindrical poison rods extend in parallel through the container interior. Each of the poison rods has a neutron absorber. A plurality of access nozzles are situated within the first head and / or second head. Each of the access nozzles has a lateral wall defining a throughway that extends through the first head between an interior end region and an exterior end region. The interior end region captures and supports a respective end of a respective poison rod. The exterior end region is opened and closed via respectively detaching and attaching an end cap to thereby respectively expose and contain the respective poison rod.