5results about How to "Reduce utilization cost" patented technology

The present application belongs to the technical field of biomass catalytic conversion, and particularly relates to a method for preparing polyols by hydrogenation of furfural and its derivatives. The method comprises the following steps: taking furfural and its derivatives as raw materials, hydrogen as hydrogen source, and simultaneously adding a catalyst La2CuO4 / Cu to perform ring-opening reaction to obtain polyols. The catalyst La2CuO4 / Cu has excellent catalytic activity in the reaction of hydrogenation conversion of furfural and its derivatives into polyols, has high activity and selectivity for the rupture of C-O bonds of reactants, improves the yield of polyols, and has mild reaction conditions, realizes recovery and long-time use without deactivation of the catalyst, and reduces the utilization cost.

This invention relates to a method for in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste. The technical solution is as follows: vanadium-containing solid waste is ground into powder, and the resulting vanadium-containing solid waste powder is mixed with vanadium pentoxide powder. The resulting vanadium-containing geopolymer precursor is mixed with an alkaline activator and stirred evenly to obtain a vanadium-containing geopolymer slurry. The vanadium-containing geopolymer slurry is placed in a mold, cured, demolded, cured a second time, and crushed to obtain a crushed vanadium-containing geopolymer. The crushed vanadium-containing geopolymer is mixed with deionized water to obtain a vanadium-containing geopolymer aqueous solution. Bismuth nitrate solution is added to the vanadium-containing geopolymer aqueous solution, mixed evenly, and the pH value is adjusted. A hydrothermal reaction is then carried out. Solid-liquid separation, washing, and drying are performed to obtain the visible light photocatalytic geopolymer. This invention can efficiently utilize low-vanadium content and completely eliminate vanadium. The in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste not only effectively decomposes organic pollutants under visible light conditions but also effectively fixes vanadium in the vanadium-containing solid waste.

The utility model discloses an automobile lamp quick-change buckle type installation support which is applied to the field of automobile lamps and comprises a support body, an adjusting plate is arranged between the inner walls of the support body, a fixing rod is connected to the surface of the adjusting plate in a bolted mode, and an automobile lamp is arranged in the support body. By pulling the fixing block to enable the clamping rod to be separated from the clamping hole, rotating the fixing block to be aligned with the fixing groove, loosening the fixing block to enable the fixing block to slide into the fixing groove, and taking down and replacing the automobile lamp, the purpose of conveniently replacing the automobile lamp can be achieved, the workload is reduced, and the replacing efficiency is improved; the mounting length can be adjusted by loosening the first adjusting bolt and moving the adjusting plate to the required position, and the mounting width can be adjusted by loosening the second adjusting bolt and moving the fixing rod to the required position, so that the purpose of mounting vehicle lamps with different sizes can be achieved, the practical cost is reduced, and the practicability and the applicability are improved.

The utility model discloses a box production leak equipment, apply in the field of box production, including fixed pipe, the inside of fixed pipe is provided with the leak mechanism, the inner wall sliding sleeve joint of fixed pipe has the connector, the surface screw thread connection of fixed pipe has the protective housing, the utility model discloses through the fixed ball and the joint groove of moving slide cylinder and disengaging joint, take down, the new connector is installed into the fixed pipe, loosens the slide cylinder, makes the fixed ball and the joint groove joint, its fixed mode, can replace the connector's purpose, need not replace this equipment, greatly reduced the use cost, improved practicality and applicability, the utility model discloses through the sealing gasket and the connector pressure of telescopic ring under the action of second spring, because sealing gasket is rubber material, when extruding will expand to all around, the sealing groove is pressed tightly, prevents the connector and fixed cylinder connecting place and leaks, improved sealing effect.

The application discloses a wind energy conversion device for a pasture area, which comprises a supporting table and a folding unit. The top and bottom of the supporting table are respectively provided with mounting holes at equal distances in a circumferential array. The center of the supporting table is provided with a circular through groove. A wind cylinder unit is arranged above the circular through groove. A rotating unit is fixedly installed on the top of the wind cylinder unit. A first wind energy conversion unit is arranged in the wind cylinder unit. The wind energy conversion device for the pasture area has the advantages of small land occupation, convenient installation, low practical cost, high wind energy conversion efficiency, high pressure utilization of small wind power, greatly improved operation quality of the wind energy conversion device, difficulty in hurting flying animals, and the capability of cleaning ice layers and ice blocks on fan leaves in winter, and the capability of retracting the fan leaves into the device, so that the fan leaves and the wind energy conversion device are effectively protected.