12results about How to "Solving Recycling Problems" patented technology

The invention relates to an ethanol upgrading device and method, the device is used for upgrading ethanol containing a small amount of ethyl acetate, the device comprises a low-pressure rectification unit, a pumping unit and a high-pressure rectification unit which are connected in sequence, a variable-pressure rectification principle is adopted, azeotrope composition is changed only through a variable-pressure mode, reasonable process parameters are matched, and the quality of ethanol is improved. The purified ethanol is extracted from the low-pressure rectification unit, and the ethanol with higher ethyl acetate content is extracted from the high-pressure rectification unit, so that a large amount of ethanol is prevented from being evaporated to the high-pressure rectification unit, the energy consumption is obviously reduced, the production cost is reduced, and the economic benefit is improved.

A fluctuating steam thermal storage and heat exchange device and method are disclosed. The device includes a tank, a heat exchanger, and a spraying device. The spraying device is located in the upper part of the tank, and the heat exchanger is located in the lower part of the tank. The bottom of the tank is connected to the spraying device via an upper pipe section through an upper circulation inlet, and to the middle of the tank via a lower pipe section through a lower circulation inlet. A circulating water pump is installed on the lifting pipe. A steam inlet is provided on the tank between the spraying device and the lower circulation inlet. This invention also provides a thermal storage and heat exchange method based on this fluctuating steam thermal storage and heat exchange device. This invention can solve the problem of recovering and utilizing intermittent polluted steam, and produces clean, high-temperature secondary water that can be used for power generation or winter heating.

The utility model discloses a kind of circulation stationary machines, including, rack, is equipped with stationary bin, disassembly tray bin and empty tray bin;Handling mechanism, be in rack, for handling tray;Driving mechanism, be in rack, driving mechanism drives handling mechanism to be connected between external and the stationary bin, between the stationary bin and disassembly tray bin and between the empty tray bin and external;And;Disassembly tray blanking mechanism, be in rack, and be connected between disassembly tray bin and empty tray bin and between disassembly tray bin and blanking area.Through driving mechanism drives handling mechanism to be connected between external and the stationary bin, between the stationary bin and disassembly tray bin and between the empty tray bin and external, realize handling mechanism multidirectional movement, realize from external tray stationary, after stationary, disassembly tray, after disassembly tray, empty tray, and workpiece is automatically transported to next process from blanking area, entire machine realizes full automation, this machine saves manual work, improves efficiency.

The application discloses a solution containing natural macromolecule and a coagulation molding method. The fiber stream obtained by wet spinning of the solution containing natural macromolecule is coagulated and molded through at least one coagulation bath. The solution containing natural macromolecule contains metal hydroxide and an additive selected from at least one of urea, zinc oxide and thiourea. Bicarbonate or bisulfite or a combination of bicarbonate and carbonate or a combination of bisulfite and sulfite is used as a component of the coagulation bath. The low-cost, green, efficient, non-toxic, harmless and inexpensive inorganic salt solution does not contain strong acid and organic solvent, and can be used to prepare long fibers with circular cross section and excellent mechanical properties. The long fibers have smooth surface, softness and luster. In the coagulation bath, the bicarbonate and carbonate or the bisulfite and sulfite can be easily separated and recovered.

This invention discloses a method for preparing a composite polyanionic sodium-ion battery cathode material, relating to the field of sodium-ion battery cathode material technology, including the following steps: S1, preparing in-situ doped ferrous sulfate; S2, preparing a graphene-based dispersion; S3, preparing a modified ferrous sulfate solution; S4, preparing an NFPP precursor; S5, preparing an NFPP cathode material. This invention uses stainless steel pickling waste liquid as raw material, first reducing it by adding elemental iron, then dispersing it in a graphene-based dispersion containing tannic acid to obtain carbon-coated modified ferrous sulfate; preparing the NFPP precursor by co-precipitation; and finally sintering to obtain a composite polyanionic sodium-ion battery cathode material with high compaction density and better electrochemical performance, thus improving the problems of poor conductivity, low compaction, low capacity, low rate capability, and high cost of existing NFPP cathode materials.

The utility model discloses a kind of linear cutting filter screen, including first mounting bracket, second mounting bracket and filter pad, the first mounting bracket right side is equipped with the second mounting bracket of symmetrical structure, and first mounting bracket and second mounting bracket structure are same, and the both ends of first mounting bracket and second mounting bracket outside are welded with connecting lug. The utility model filters the size of notch to carry out the size of filter pad, then the both ends of filter pad are respectively installed in the mounting groove of first mounting bracket, second mounting bracket inner end, and fixed by screw, increase firmness, then filter pad is laid in the notch of filtering, and first mounting bracket and second mounting bracket are fixed by fixed bolt, filter pad is attached to the notch of filtering, solve the cutting chip with cutting fluid flow to cutting fluid recovery pipe, jam in the elbow place inside pipeline, seriously affect the problem of cutting fluid recovery, improve the recycling rate of cutting fluid.

The application discloses a cable and wire stripping machine, which comprises an operation table, traction devices, an outer shell, a stripping knife group, wherein the traction devices are provided in two groups, the first group of traction devices is used for traction of unstripped cables, the second group of traction devices is used for traction of conductors, the first group of traction devices and the second group of traction devices are arranged on the operation table, the outer shell is arranged on the operation table and located between the first group of traction devices and the second group of traction devices, the stripping knife group comprises a supporting structure, a first knife group and a second knife group, the supporting structure is arranged in the outer shell and close to one side of the first group of traction devices, the first knife group is rotatably arranged in the middle of the outer shell, the cutter of the first knife group is clamped into the gap between steel wires of the cable and rotates when the cable advances, and the second knife group is suspended in the outer shell and close to one side of the second group of traction devices, and the second knife group cuts the sheath, so that the application has the advantages of simple structure and convenient use.

The application provides a process for recycling aramid spinning flush material, and belongs to the technical field of high-risk solid waste recycling, and aims to solve the technical problem that PPTA resin is easy to degrade during neutralization and washing recovery.The recycling process comprises the following steps: (1) collecting aramid spinning flush material lumps and cooling at low temperature; (2) soaking the cooled flush material lumps in ice water / ice slurry, replacing the ice water / ice slurry for multiple times until the leaching liquid is weakly acidic and stable; crushing the flush material lumps; (3) soaking the crushed flush material lumps in weakly alkaline ice water / ice slurry to neutralize residual acid, and then crushing the flush material lumps again by using a crushing device, and washing, drying and obtaining recycled PPTA resin particles.The application realizes harmless treatment and resource utilization of the aramid spinning flush material containing a large amount of sulfuric acid and aramid resin generated during aramid spinning, improves economic benefits and reduces environmental pollution.

This invention belongs to the field of polyolefin recycling technology and relates to a method for preparing high-quality carbon nanotubes by catalytic carbonization of polyolefins. In this invention, polyolefins are degraded at high temperature to generate small-molecule hydrocarbons. Subsequently, a Ni-Mo-Al catalyst undergoes a reduction reaction to generate elemental nickel. The elemental nickel catalyzes the degradation products to undergo dehydrogenation, cyclization, and aromatization reactions, followed by carbon deposition on the surface of the elemental nickel, which gradually grows into carbon nanotubes. Furthermore, the Ni-Mo-Al catalyst can reduce the formation of amorphous carbon, thereby increasing the activity of elemental nickel and reducing its ability to dissolve carbon, thus preparing carbon nanotubes with smaller diameters and uniform morphology. This invention has the advantages of inexpensive and readily available carbon sources and a simple preparation method, realizing the upgraded chemical recycling of waste polyolefins and the controllable preparation of carbon nanotubes, effectively solving the problem of reusing urban and industrial waste polyolefins.

The application relates to the field of high-voltage switch devices of power systems, and discloses a through-wall connecting piece of a new material, a side-out bus sleeve assembly comprising a bus sleeve and a center insert fixed in a center hole, a plurality of interval distributed umbrella skirts extending on the outer circumferential surface of the bus sleeve in the axial direction of the bus sleeve, a first flange and a second flange fixedly connected outside the connecting end of the bus sleeve, and the bus sleeve, the umbrella skirts, the first flange and the second flange being integrally cast by thermoplastic engineering plastics. In the production process of the device, the bus sleeve, the umbrella skirts, the first flange and the second flange, the inserted connecting insert and the center insert are integrally cast by thermoplastic engineering plastics, the thermoplastic engineering plastics is used to replace epoxy resin, the insulation function of the product is realized, the recycling problem is solved, and the stability and the service life of the device can be improved through the integrated casting and the setting of the annular clamping groove of the center insert and the annular clamping protrusion of the center hole.

The invention relates to a method for preparing para-aramid fibrid through a dissolution method. The method provided by the invention comprises the following steps: (1) dissolving: dissolving poly (p-phenylene terephthamide) (PPTA) in a composite solvent to obtain a poly (p-phenylene terephthamide) solution; and (2) fiber forming: adding the poly-p-phenylene terephthamide solution obtained in the step (1) into a coagulating bath, and stirring to obtain the para-aramid fibrid dispersion liquid. The method disclosed by the invention is simple in process, low in cost, low in equipment requirement, low in implementation difficulty and capable of obtaining the para-aramid fibrid with excellent performance. Moreover, according to the method disclosed by the invention, the waste material generated in the production process of the para-aramid fiber and / or the recovered para-aramid fiber product can be used as the raw material, so that the production cost is low, and the method is environment-friendly.

The utility model provides a system of waste heat power plant cooling tower top steam water recovery is carried out with the application of ground source heat pump, the system includes shallow ground heat energy heat extraction system, ground source heat pump system and cooling tower top steam water recovery system, shallow ground heat energy heat extraction system's output end is connected ground source heat pump system, and the output end of ground source heat pump system is connected cooling tower top steam water recovery system, the utility model will ground heat energy into cold energy, carries out condensation to the steam of cooling tower dissipation, can recover water resources.