12results about How to "Efficient regeneration" patented technology

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

This invention provides an adsorption device for hydrogen peroxide oxidation tail gas, comprising an adsorption tank, an inner filter cartridge, an outer filter cartridge, an adsorption chamber, several air inlets, an adsorption resin layer, an inlet pipe, and an outlet pipe; both the inner and outer filter cartridges are located inside the adsorption tank. This invention optimizes the traditional "flat-lay" structure into a "sleeve-type" coaxial double-layer filter cartridge structure, improving the contact efficiency between the tail gas and the resin, preventing the resin from being blown away or worn, extending its service life, and simplifying the filling process. The elimination of quartz sand filler also simplifies the filling process. The system adopts a "five-in-one-out" operating mode, enabling multiple adsorption tanks to operate in rotation. Combined with steam regeneration, nitrogen purging, and spray cooling processes, it achieves efficient resin regeneration and reuse, significantly reducing operating energy consumption and material replacement frequency. The adsorption system operates stably, has a compact structure, and can continuously and efficiently remove aromatic organic pollutants from the oxidation tail gas, balancing operational economy and environmental friendliness.

The invention discloses a direct high-temperature regeneration method of a waste lithium iron phosphate positive plate in a water vapor atmosphere. The method comprises the following steps: directly placing the positive plate obtained by discharging and disassembling the waste lithium iron phosphate battery into a reaction container, directly regenerating at 600-650 DEG C by taking superheated steam as a gasification medium, and removing aluminum foil after the regeneration process is completed, thereby obtaining the regenerated lithium iron phosphate positive plate. According to the method provided by the invention, the structure of lithium iron phosphate can be completely repaired at a relatively low temperature, and aluminum foil fusion is avoided. Compared with a traditional recycling process, the method has the advantages that complex pretreatment steps such as smashing, screening and stripping are omitted, material loss is reduced, the whole process is mild and environmentally friendly, and the method is short in process and easy and convenient to operate.

The catalyst regeneration reactor comprises a crushing unit, a feeding conveying belt, a drying unit and a reactor, the crushing unit comprises a crushing box and two crushing rollers, the drying unit comprises a drying box, the bottom of the drying box is communicated with the reactor through a discharging port, and the feeding conveying belt is used for conveying a catalyst discharged from a feeding port to a feeding port; the drying box is provided with a mixing assembly, the mixing assembly is used for stirring a catalyst in the drying box, the drying box is communicated with a drying pipe, and the drying pipe is used for blowing high-temperature dry air to dry the catalyst in the drying box; according to the catalyst regeneration reactor disclosed by the utility model, the crushing unit is adopted to crush a to-be-regenerated catalyst and ensure that the catalyst can be quickly and effectively regenerated, and the drying unit is matched to dry the to-be-regenerated catalyst, remove moisture adsorbed in the catalyst and preheat the catalyst, so that the regeneration time is greatly shortened, and the regeneration efficiency is improved. The regeneration efficiency and the regeneration quality are improved.

The present application relates to adsorption separation of bisphenol A and 2,4-bisphenol A adsorbent and its adsorption separation process; the adsorbent is a high-silicon Y molecular sieve containing rare earth, the molar ratio of the contained silicon oxide and aluminum oxide is 2.5:1-15:1, the contained rare earth metal is one or a combination of multiple of lanthanum, cerium, scandium and yttrium, the content of rare earth metal is 10:1-1000:1 in terms of the molar ratio of silicon and rare earth metal, and the rare earth metal exists in the form of metal ions. The adsorption separation process is to contact the mixture containing bisphenol A, 2,4-bisphenol A, triphenol and chroman in the crystallization mother liquor with the adsorbent in the adsorption separation reactor to carry out adsorption separation, and the obtained bisphenol A and 2,4-bisphenol A after adsorption separation enter the isomerization reaction unit; the obtained triphenol and chroman after adsorption separation enter the cracking reaction unit. Phenol is used as the eluent, has strong affinity with the adsorbent, and the elution efficiency reaches more than 95%.

The present application relates to the technical field of breeding and seedling raising of forest trees, and discloses a method for realizing in vitro regeneration of Rosa roxburghii by hypocotyl culture, which comprises the following steps: taking seedling germinated from cold storage of Rosa roxburghii seeds as material, removing cotyledon and root, cutting hypocotyl segments with a length of 0.6-1.5 cm as explants, and sterilizing the explants; inoculating the sterilized explants into primary induction medium, and carrying out dark culture until callus is generated and primary adventitious buds are induced; inoculating the cultured callus into differentiation medium, and carrying out dark culture until secondary adventitious buds are regenerated; inoculating the obtained secondary adventitious buds with a height of 1.5-2.5 cm into rooting medium until rooted plants are obtained; and hardening the obtained rooted plants, and then transplanting them into mixed substrate for culture.

The invention belongs to the technical field of environmental engineering, and particularly relates to a contaminated soil micro-foam leaching device and method based on the ATP forming principle, a supporting table is fixedly provided with a large crossed roller bearing, the large crossed roller bearing is provided with three high-frequency vibration tables, the three high-frequency vibration tables are each provided with a reaction tank, and the reaction tanks are arranged on the supporting table; the three reaction tanks are sequentially arranged in a clockwise mode to be a filling station, a leaching station and a discharging station, a discharging component is arranged on the filling station, a micro-foam generating module is arranged on one side of the leaching station and arranged on a supporting table, an anti-leakage collecting barrel is arranged below the discharging station, and a discharging component is arranged on the discharging station. The technical scheme is innovated from the aspect of mass transfer principle, continuous physical conveying of soil can be achieved, targeted transfer of pollutants from the soil to a leaching medium can be actively driven through an ATP bionic mechanism, and three core challenges of mass transfer efficiency, operation cost and secondary pollution are systematically solved.

This invention provides a method for recycling and upgrading spent lithium iron phosphate (LFP) cathode materials to regenerate lithium manganese iron phosphate (LFP). The method utilizes a manganese ion-catalyzed hydrogen peroxide and sulfuric acid system to leach the spent LFP, improving acid leaching efficiency. Simultaneously, the manganese ions remaining after acid leaching are used as a manganese source to generate LFP precursors, ultimately synthesizing high-performance LFP cathode materials. This invention features a simple process, low cost, and is suitable for large-scale industrial production.

The present invention is to optimize the front-rear torque distribution when regenerative braking is performed on the front and rear wheels at the time of braking based on accelerator operation. The present invention provides a control device for an electric vehicle in which a brake and an electric motor are provided for each of front and rear wheels, the control device being configured to perform the following processes: calculating a requested regenerative torque corresponding to an operation amount of an acceleration / deceleration operation at the time of deceleration; calculating a torque distribution ratio of the front and rear wheels based on vehicle information including a vehicle speed; calculating a regenerative torque available based on the requested regenerative torque, the vehicle information, and the torque distribution ratio; calculating a regenerative request value based on a requested brake torque generated by the brake based on pedal operation and the regenerative torque available; and calculating a regenerative torque of the front and rear wheels based on the regenerative request value, the requested regenerative torque, and the torque distribution ratio.

This invention discloses a method for regenerating and utilizing the rich absorbent solution for capturing CO2 / SO2 using an organic amine method, comprising the following steps: S1. For the rich absorbent solution system obtained by treating CO2 / SO2 mixed gas with organic amine, CO2 gas is desorbed using a first-stage thermal desorption method, and then an alkaline solution M(OH) is introduced. n SO3 in the rich solution 2‑ Primary mineralization is M(SO3). n / 2 Precipitate forms and a mother liquor is obtained; S2. CO2 is continuously passed into the mother liquor to remove inorganic cation M. n+ Secondary mineralization is M(CO3). n / 2 After precipitation, residual CO2 gas in the mother liquor is desorbed using a two-stage thermal desorption method, thereby regenerating the organic amine solution. This method employs two-stage series mineralization and two-stage series pyrolysis to ensure high-purity regeneration of the organic amine solution, while simultaneously producing sulfite and carbonate products, achieving the resource-based conversion of CO2 and SO2 in the absorbent solution.

A water softening device (100) is provided with: a water softening chamber (201) having a weakly acidic cation exchange resin (101) and generating soft water from raw water containing a hard component; a neutralization chamber (202) that has a weakly alkaline anion exchange resin (102) and neutralizes the soft water; a diaphragm that partitions between the water softening chamber (201) and the neutralization chamber (202) such that soft water can pass therethrough; a first electrode (103) that functions as an anode during regeneration of the weakly acidic cation exchange resin (101); and a second electrode (104) that functions as a cathode during regeneration of the weakly alkaline anion exchange resin (102). The first electrode (103) is provided in the water softening chamber (201) so as to be surrounded by a weakly acidic cation exchange resin (101), and the second electrode (104) is provided in the neutralization chamber (202) so as to be surrounded by a weakly alkaline anion exchange resin (102).

This invention relates to a method for regenerating sputtered titanium targets, titanium targets, and titanium target assemblies, specifically relating to the field of target materials. The regeneration method includes: sequentially roughening, cleaning, and cold spraying the sputtered surface of the sputtered titanium target to obtain a regenerated intermediate target; and then heat-insulating and cooling the regenerated intermediate target to obtain a regenerated titanium target. The regeneration method provided by this invention, by employing a specific treatment process on the sputtered titanium target and utilizing a combination of cold spraying and heat insulation, achieves efficient regeneration of titanium targets, maximizing the value of high-purity titanium resources and reducing material costs.