43results about How to "Solve recycling" patented technology

The invention relates to a cleaning device for corroded aluminum foil, in particular to a circulating water cleaning device for corroded aluminum foil. A circulating water cleaning device for corroded aluminum foil, comprising a filter box and a water storage tank arranged side by side and at the same height on the same level, a bracket is arranged on the side where the filter box and the water storage tank are juxtaposed, and the bracket is provided with a The filter box and the cleaning box are juxtaposed with the water storage tank. The water delivery pump brings the pure water in the water storage tank into the cleaning box through the outlet pipe, and then rinses the aluminum foil in the feed inlet. When the pure water rinses the aluminum foil in the feed inlet, the power wheels on the left and right sides make the aluminum foil The belt is conveyed from left to right, so that the chloride ion content on the surface of the aluminum foil belt is gradually washed away, and the purity of the pure water closer to the right is higher and the chloride ion content on the surface of the aluminum foil belt is lower, so that the level by level The rinsing effect is more effective, which in turn minimizes the chloride ion content on the surface of the aluminum foil.

The invention discloses a method for selectively enriching scandium from Bayer process red mud. The method is characterized in that the Bayer process red mud is used as a raw material, the red mud isfully wet by adding an appropriate amount of water, the red mud is sulphated by using concentrated sulfuric acid and is then calcined at a high temperature, the solid calcined product is mechanicallyactivated by grinding and is then subjected to four-stage water immersion and washing, so that a scandium-rich leaching solution, scandium-rich washing liquid and low-alkali iron-rich slag are obtained. The method enables most of scandium to be leached, but the leaching rates of impurity iron and aluminum are low, and silicon and titanium are not leached substantially, so that the formation of colloidal silicate in the leaching solution is avoided, and the selective absorption and extraction of the scandium in the subsequent leaching solution are facilitated; the generated sulfur dioxide and sulfur trioxide can be reused in the preparation of sulfuric acid, so that the production of a large amount of waste acid is avoided; the pH of the low-alkali iron-rich slag is close to neutral, and can be used in the industries such as iron making, adsorbents, ceramics, construction and the like, so that a new way is provided for the extraction of the scandium and the comprehensive utilization ofthe red mud.

The invention discloses an extruding device and method for directional chopped carbon fiber reinforced thermoplastic composite materials in the field of composite material processing. A multifunctional stirring device is installed in the middle of the inside of the melting chamber, and the bottom of the melting chamber is connected to extruders arranged horizontally on the left and right through gate valves. The material chamber, the left side of the extrusion chamber is a telescopic hydraulic cylinder arranged horizontally, the right end of the telescopic hydraulic cylinder is connected with a first-stage sleeve piston, and the second-stage sleeve piston is coaxially connected with the first-stage sleeve piston; The outlet at the right end is coaxially connected and connected to the tapered stepped pipe nozzle. The tapered stepped pipe nozzle has a multi-stage tapered stepped pipe from left to right inside, and the inner diameter of the tapered stepped pipe decreases from left to right. And the left and right lengths decrease successively from left to right; the invention integrates the three processes of blanking, stirring and extruding into one, and guides the directional arrangement of chopped carbon fiber filaments in the thermoplastic resin matrix along the direction of material extrusion, and the chopped carbon fiber Filament and thermoplastic resin matrix raw materials are directly processed into continuous filaments.

An additive manufacturing method using a plastic powder conformal cooling stepped temperature bed. The method comprises the following steps: adding powder, scraping powder, performing primary heating, performing secondary heating on a selected region, performing laser sintering, and lowering the powder bed by the thickness of a layer and repeating the preceding steps. The additive manufacturing system stops heating of the plastic powder, the temperature of the shaping cylinder drops, and after the sintered molten plastic powder cools and solidifies, a plastic product is formed. The invention overcomes the technical defect in the prior art that plastic powder degrades or is excessively cross-linked in conventional plastic powder shaping processes adopting laser sintering, preventing the physical properties of unsintered plastic powder in the shaping cylinder from deteriorating due to high temperature, such that no plastic powder has to be discarded, and powder can be reused without requiring combination with a high ratio of new powder, thereby significantly reducing plastic powder costs for sintered plastic products.

The invention discloses a regeneration method of an activated carbon catalyst used for preparing glyphosate. The regeneration method comprises a solvent elution step and / or a heat treatment step, wherein the solvent elution step refers to treating inactivated activated carbon catalyst for 4-24 hours in a refluxing condition by using a water solution with alkaline or reducing inorganic substance or an organic solvent with alkalinity or reducibility; and the heat treatment step refers to high-temperature roasting to-be-treated catalyst for 0.5-24 hours in a reducing gas to obtain regenerated catalyst with activity fully recovered. An object of reuse of waste activated carbon generated in a production process of the glyphosate can be achieved by the method provided by the invention, thereby greatly reducing generation of solid waste in the production process of the glyphosate and simultaneously reducing production cost.

The invention discloses an encrypted charging system for shared charging piles of electric vehicles, including a two-dimensional code, a charging mode selection interface, a charging consumption calculation module, a charging timing module, a charging current detection module, a power-on control module, a charging locking mechanism and a central control The system, the charging method includes the following steps: insert the charging head into the charging socket of the electric vehicle; authorize the charging pile to obtain the user identity, and select any charging method in the charging mode of the charging mode selection interface, and put the charging head Locking; charge the electric vehicle with power on the charging head, record the charging time and monitor the current of the charging head in real time; control the unlocking of the charging head and disconnect the power supply of the charging head, and the next user will share the charging head; this scheme is effective Prevent others from unplugging the charging gun head to steal electricity to charge their own electric vehicles during the charging process, and automatically unlock the charging gun head and cut off the power to the charging gun head after the electric vehicle is fully charged.

The invention belongs to the technical field of chemical industry catalysis, and particularly relates to a catalyst for converting an alcohol ether into a high p-xylene content aromatic hydrocarbon, a preparation method and a reaction process thereof. According to the present invention, a molecular sieve loading a metal, phosphorus and rare earth and other reinforcing components are adopted to form high mechanical strength particles, and the surface acid sites are 0.01-1% (molar fraction) of the total acid sites of the catalyst; the preparation method relates to a method for forming composite particles through multiple forming and controlling acid of the surface of the composite particles; and the catalyst can be applicable for fixed beds, moving beds and fluidized beds, and can be provided for converting methanol or dimethyl ether raw materials containing water and a small amount of high carbon alcohol and ester, wherein one-time conversion efficiency of the methanol or the dimethyl ether at a temperature of 450-520 DEG C and a space velocity of 0.2-30 h <-1> is more than 99.9%, the total (carbon-base) yield of the aromatic hydrocarbon is more than 60%, and the mass fraction of the p-xylene in the xylene is more than 90%.