5results about How to "Reduce recycling efficiency" patented technology

The invention belongs to the field of new energy solid waste recycling, and particularly relates to a method for extracting high-purity copper-indium-gallium-selenium powder from a decommissioned copper-indium-gallium-selenium photovoltaic cell, which comprises the following steps: (1) pretreating the decommissioned copper-indium-gallium-selenium photovoltaic cell to obtain a cell sheet material; (2) mixing alkali liquor with benzyl alcohol and hydrogen peroxide; contacting the cut battery sheet material with the mixed solution and leaching; (3) carrying out ultrasonic treatment on a liquid-solid mixture obtained by leaching, then taking out a substrate, a wire and a resin film with clean surfaces and partially broken EVA from the solution, and leaving black copper indium gallium selenium powder in the solution; (4) filtering the obtained solution containing the copper-indium-gallium-selenium powder to obtain leachate and filter residues; and carrying out post-treatment on filter residues to obtain high-purity copper indium gallium selenium powder. According to the method, the quality and purity of the recovered copper indium gallium selenium powder can be improved, the high recovery rate is guaranteed, and efficient utilization of the retired copper indium gallium selenium photovoltaic cell is achieved.

A method for recovering organic tin in a vinyl ether compound transesterification kettle liquid, comprising the following steps: 1) taking the vinyl ether compound transesterification kettle liquid, cooling to-10-40 DEG C, standing, until crystals are precipitated in the transesterification kettle liquid, filtering, or, cooling to-10-40 DEG C, adding 0.1-5% of organic tin powder in mass fraction to the transesterification kettle liquid, stirring and mixing uniformly, then standing, until crystals are precipitated in the transesterification kettle liquid, filtering; 2) adding a basic solution with a concentration of 5-8 wt% to the crystals obtained by filtering, in a mass ratio of 1:0.5-10, and heating to 25-60 DEG C, until flocculent substances appear on the surface of the basic solution, and filtering the lower aqueous phase; 3) washing the crystals obtained by filtering with water, then washing with an organic solvent, drying, to obtain organic tin. The process condition is mild and the operation is convenient, the recovered organic tin can be used repeatedly, the production cost of enterprises is reduced, and environmental pollution is avoided.

The utility model discloses a kind of waste gas electrostatic precipitators facilitating dust recovery, including electrostatic precipitator main body and the two ash hoppers of being fixed in the bottom of electrostatic precipitator main body, the outer surface of two The shell is fixedly coated in ash hopper, the inside of two The shell is fixedly connected with multiple partitions, and partition and ash hopper outer wall sealing abut;The outer surface of two The shell is fixedly penetrated with multiple fixed pipes, another end of multiple The fixed pipe is commonly fixedly penetrated with annular groove.In the utility model, by the shell and partition set in the outside of ash hopper, the chamber between ash hopper and shell is divided into multiple independent detection chambers, combined with air pressure sensor, gas supply assembly, electric rotating assembly, annular groove, movable ring and fixed pipe, the air pressure change of each detection chamber can be monitored in real time, air leakage problem is found and repaired in time, dust recovery efficiency caused by air leakage is effectively avoided to reduce, to improve the stability and dust removal effect of equipment.

The invention discloses a system and a method for recycling valuable metals of a lithium ion battery through cooperation of wet grinding and vacuum pyrolysis. The recycling method comprises the following steps: completely discharging a waste lithium ion battery, disassembling and separating a positive plate and a negative plate, crushing and sieving, and collecting undersize powder; mixing with a grinding medium, and carrying out ball milling by adopting a ball milling tank; the slurry is sieved after being dried, and screen underflow is collected and is electrode black powder; putting the electrode black powder into a vacuum pyrolysis reactor, vacuumizing and then pyrolyzing; and after the pyrolysis is finished, cooling to room temperature under vacuum or inert gas protection to obtain a valuable metal solid product. The method is carried out at a relatively low temperature, metal oxidation can be inhibited, generation of harmful gas is reduced, separation and pyrolysis with higher adaptability to raw materials are realized, and directional recovery is realized.

This invention relates to the field of gas treatment technology, specifically to an odor gas treatment device for highly polluted environments. The device includes a primary treatment tower, a connecting pipe, a secondary treatment tower, an input pipe, and a gas delivery unit. The top of the primary treatment tower is connected to the bottom of the secondary treatment tower via the connecting pipe, and the input pipe is connected to the primary treatment tower, with the gas delivery unit connected to the input pipe. The device also includes a deodorization and sterilization mechanism installed on the primary treatment tower, the input pipe, and the secondary treatment tower, used for gas treatment; and a filtration mechanism installed inside the primary treatment tower. In this invention, particles above the support plate and above the filter plate are flushed into a temporary storage tank by liquid, thus flushing the particles on the filter plate into the temporary storage tank, completing the collection of particles on the filter plate. This achieves the simultaneous filtration of particles by the filter plate and flushing of particles with liquid, preventing filter plate clogging.