6results about How to "Addressing Purity Issues" patented technology

This utility model relates to the field of bio-jet fuel technology, specifically a selective collection device for isomeric fractions of bio-jet fuel. The device includes a housing, a rotating assembly, and a tube rack. The bottom of the rotating assembly is located inside one end of the housing, and the end of the tube rack away from the rotating assembly is connected to the housing. This assembly, consisting of the housing, rotating assembly, and tube rack, provides a continuous collection device for isomeric fractions of bio-jet fuel. Through a step-by-step rotation, test tubes used for collecting the fractions pass sequentially below the discharge end of the tube rack. Simultaneously, the device actively lifts the test tubes being collected, bringing the tube opening closer to the discharge end of the fraction, thus reducing the likelihood of external interference during the fraction's descent into the test tube and improving the reliability of fraction collection.

The application discloses a preparation method of a regenerated battery and the regenerated battery, and relates to the technical field of battery recycling and regeneration; and comprises the following steps: obtaining lithium iron phosphate waste and graphite waste based on retired lithium iron phosphate batteries; mixing the lithium iron phosphate waste, lithium carbonate lithium supplement and residual lithium precipitate, adding a composite filling agent and a titanium-lanthanum combined effect modifier for heat treatment to obtain a regenerated lithium iron phosphate material; performing acid pickling, drying and sorting on the graphite waste to obtain graphite powder; obtaining a suspension by mixing the graphite powder, a silane coupling agent and a carboxylated graphene combined agent and a solvent, and performing heat treatment on the suspension to obtain a regenerated graphite material; and preparing a positive electrode sheet and a negative electrode sheet based on the regenerated lithium iron phosphate material and the regenerated graphite material, and assembling the positive electrode sheet, the negative electrode sheet, an electrolyte and a diaphragm into the regenerated battery. The application optimizes the regeneration process of the lithium iron phosphate waste and the graphite waste, so that the electrochemical performance of the regenerated battery is improved.

The invention discloses a fulvic acid extraction method by acid precipitation combined classification, which belongs to the field of fulvic acid production, and comprises the following steps: S1, obtaining a fulvic acid mixed solution by an acid precipitation method, S11, forming pre-coal slurry from water and weathered coal, and reacting with concentrated sulfuric acid at 70-90 DEG C for 1-2 hours; the ratio of acid to coal is 1: (3-5), and the ratio of water to coal is (1.5-2): 1; s13, centrifuging or settling the acid extract for 24 hours to remove insoluble sulfate and impurities; S14, taking supernate, and enabling the supernate to pass through a 100-120-mesh screen, so as to obtain a fulvic acid mixed solution; and S2, grading the fulvic acid mixed solution to obtain F1-F4 fulvic acid. The method solves the problem of difficulty in grading fulvic acid with different molecular weights, and is low in grading cost, convenient and fast.

The utility model provides a gas-water separation device of a hydrogen fuel cell, which relates to the technical field of fuel cells and comprises a tank body, the separation assembly comprises an input pipe fixedly connected to the interior of the tank body, one end of the input pipe is fixedly connected with a flow dividing pipe, the bottom end of the flow dividing pipe is fixedly connected with a gas-liquid separation pipe, the top end of the outer side of the gas-liquid separation pipe is provided with a vent hole, and the bottom end of the gas-liquid separation pipe is fixedly connected with a bottom supporting disc; the interior of the separation assembly is fixedly connected with a water absorption assembly; by means of the design, efficient gas-water separation and automatic discharge of water are achieved, the purity and the circulation efficiency of hydrogen are improved, meanwhile, the situation that the active area of an electrode is reduced due to liquid water retention is avoided, and the problems that a traditional gas-liquid separation device carries liquid drops and the purity of hydrogen is reduced under the conditions of high humidity and high flow speed are effectively solved.

This application relates to the field of carbon capture wastewater treatment technology, and in particular to a multi-stage purification method and system for absorbents in carbon capture wastewater. The method includes: performing wastewater pretreatment, multi-stage filtration, primary deweighting, distillation purification, and final deep purification steps; the system includes a pretreatment unit, a multi-stage filtration unit, a deweighting unit, a distillation unit, a deep purification unit, and a control unit. This application removes degradation products through the synergistic effect of chemical conditioning and physical filtration, achieves thorough separation of effective components through primary deweighting and distillation fractionation, and combines a vacuum environment to reduce operating temperature and slow down secondary degradation. This application can solve the problem that a single method cannot simultaneously achieve product purity and recovery rate, significantly improves the purity of the regenerated absorbent, realizes efficient resource regeneration of wastewater, reduces system energy consumption and operating costs, and has significant economic and environmental value.