4results about How to "Achieve pre-separation" patented technology

The application belongs to the technical field of medical isotope production, and relates to a recovery and purification method of a target material, in particular to a recovery and purification method of a nickel target material in a Cu-64 preparation process. An acid is added to a recovered nickel solution in the Cu-64 preparation process to adjust the hydrogen ion concentration to 6-8 mol / L, so as to obtain an acidic nickel solution; a TK201 resin is used to perform one-column separation on the acidic nickel solution, so as to obtain effluent; and an AGMP-1 resin is used to perform two-column separation on the effluent, so as to obtain a recovered and purified nickel solution. The recovery and purification method can significantly reduce Cu, Co and other impurities, greatly improve the purity of nickel in the recovered nickel target material, and has a high nickel recovery rate.

This invention relates to the technical field of ash removal equipment for thermal power plants, and discloses a dust sampler for electrostatic precipitators used in thermal power plants, comprising a powder silo, a feed silo, a dust spray pipe, several spray nozzles, a bag filter, and a self-driven airflow vibration mechanism. The powder silo is equipped with a discharge port and a positive pressure purge valve, and the feed inlet of the feed silo is connected to the discharge port. The dust spray pipe is located inside the feed silo and communicates with the feed inlet; multiple Venturi-type spray nozzles are connected to the dust spray pipe to uniformly disperse the dust-laden airflow and achieve dust pre-separation. The bag filter is equipped with a self-driven airflow vibration mechanism to achieve automatic dust removal and anti-clogging. This invention adopts a closed sampling structure, combined with a bag filter and a self-driven vibration mechanism, solving the problems of high safety hazards, dust pollution, easy sample contamination, and easy bag clogging associated with existing manual sampling methods. It has the advantages of safety, no pollution, and flexible operation.

This utility model discloses a rainwater purification and salinity-isolation reuse device for saline-alkali land, including a rainwater collection component and a rainwater purification component. The rainwater collection component includes a collection chamber connected to a main pipe, which forms a 30° angle with the horizontal line and slopes upwards at the end furthest from the collection chamber. Several collection branch pipes extending to the ground are connected to the main pipe. A vortex funnel is located near the lower end of the collection chamber, and a sludge collection chamber is connected below the collection chamber. The rainwater purification component includes a primary filter chamber and a water collection chamber connected to the collection chamber. The primary filter chamber contains multiple gravel layers. An installation column is rotatably installed inside the water collection chamber, and several packing plates are inserted on the outside of the installation column, filled with activated carbon packing. This utility model prevents rainwater from flowing into surrounding water systems and becoming unusable saline water due to a lack of retention measures. The rainwater storage facility has a salinity-isolation function. During the flood season, rainwater is collected and temporarily stored, and reused for irrigation during the dry season, improving the rainwater utilization rate of saline-alkali farmland.

The invention provides a preparation method and device of a high-dispersity metal nano material. The preparation method comprises the following steps: taking a metal material as an anode, and evaporating the metal anode through plasma working gas and arc discharge in a vacuum reaction chamber to form metal nano vapor; introducing quenching gas above the metal anode to form a quenching area, and quenching the metal nano steam to obtain initial metal nano particles; and introducing a form guide gas at a preset angle to form a guide gas flow, completing condensation, solidification and form determination of the initial metal nanoparticles in the moving guide gas flow, and introducing the initial metal nanoparticles into a collector communicated with the vacuum reaction chamber for deposition to obtain the high-dispersity metal nanomaterial. The device comprises a reaction chamber, a quenching gas pipe, a form guiding gas pipe, a collector, a metal anode and a cathode. The method and the device can be used for preparing the metal nano material with good dispersion and uniform particle size distribution.