5results about How to "High extraction purity" patented technology

This invention relates to the field of sludge treatment technology, and more particularly to a method for preparing struvite by acid leaching of phosphorus from sludge gasification residue with kaolinite assistance. The method includes the following steps: S1, calcining a mixture of kaolinite and sludge in a certain proportion at 800-1000℃ for a period of time; S2, dissolving the calcined product with an acid solution, separating the solid and liquid, and collecting the phosphorus-containing supernatant; S3, adding a certain amount of magnesium and ammonium sources to the phosphorus-containing supernatant, adjusting the pH to 9.4-10, stirring for a period of time, separating the solid and liquid, washing the filtered solid with deionized water, and drying to obtain struvite crystals. This invention introduces kaolinite before sludge calcination, increasing the phosphorus content in the calcined product, improving the utilization rate of sludge gasification residue, and solidifying heavy metals in the sludge. It avoids a large amount of heavy metals entering the phosphorus-containing supernatant during acid leaching, resulting in a stable and reliable MAP struvite material.

This invention discloses a method for preparing purslane exosomes with anti-allergic effects and their applications, specifically relating to the field of natural active substances. The method includes washing fresh purslane and then juicing or homogenizing it, separating solid residue from the liquid juice to obtain a plant homogenate supernatant as a precursor. The precursor is then subjected to low-temperature differential centrifugation to remove cell debris and large particulate impurities, and the clarified supernatant is collected. The clarified supernatant is then filtered through one or more multi-stage filter membranes, with pore sizes selected from 5 μm, 1.2 μm, 0.45 μm, 0.22 μm, and 100 nm. Through optimized extraction processes, such as specific enzymatic hydrolysis steps, centrifugation conditions, and ultrafiltration technology, the extraction efficiency and purity of exosome-like nanovesicles are significantly improved. Compared to traditional extraction methods, this method can more accurately remove impurities, preserve the integrity and bioactivity of exosome-like nanovesicles, and ensure their stability and effectiveness in subsequent applications.

This invention relates to the field of nuclear radiation monitoring technology, specifically a remote online tritium monitoring system, comprising: a data acquisition module for synchronously acquiring end-point tritium concentration, pipeline environmental parameters, and background radiation data; a coupling model construction module for constructing a coupled model of gas-solid interface adsorption kinetics and fluid transport, and establishing a dynamic transfer function; a source term inversion and reconstruction module for performing deconvolution operations to inversely deduce the true tritium concentration at the source; a state assessment and threshold adjustment module for real-time calculation of pipeline adsorption saturation and dynamic adjustment of alarm thresholds; an early warning generation module for generating early leak warning commands; and an operation and maintenance prediction module for identifying pipeline maintenance needs based on the trend of adsorption performance degradation. This invention overcomes the defects of signal lag and peak clipping, achieving a second-level response to sudden pulse leaks.

The utility model belongs to the technical field of extraction tank, concretely is a kind of spice extraction tank, including tank body, extraction mechanism and deslagging mechanism, the extraction mechanism is arranged in the inside of the tank body, the deslagging mechanism is arranged in the inside of the tank body and is connected with the extraction mechanism;The extraction mechanism includes the separation cylinder fixedly connected in the inside of the tank body, the inside of the separation cylinder is equipped with filter cylinder, the top of the tank body is fixedly connected with first motor, the output of first motor is connected with the rotating shaft extending to the inside of the tank body, the outside of the rotating shaft is fixedly connected with several groups of stirring piece.This spice extraction tank, by first helical shaft vertical transfer slag to second helical shaft, realize efficient deslagging, first helical shaft is connected with rotating shaft by magnetic coupling, rely on electromagnetic control to realize flexible start-stop, when deslagging, magnetic coupling drives first helical shaft to rotate by the driving force of first motor, and slag material is smoothly discharged from tank body.

The utility model discloses a kind of three-stage preheating simulation devices of hydrometallurgy of nickel, including simulation room, heating assembly, power supply assembly and temperature control assembly, first reaction kettle, second reaction kettle and third reaction kettle are respectively provided in the simulation room, the heating assembly includes first heating pipe, second heating pipe and third heating pipe, the first heating pipe is fixedly arranged in the both sides of first reaction kettle, the second heating pipe is fixedly arranged in the top and bottom of second reaction kettle, the third heating pipe is arranged around in the circumferential side of third reaction kettle, the first heating pipe, second heating pipe and third heating pipe are all connected power supply assembly, the first reaction kettle, second reaction kettle and third reaction kettle outside are all provided with temperature control assembly, three reaction kettles and corresponding heating pipe set, the preheating temperature of different stages can be accurately controlled, so as to meet the different temperature needs in hydrometallurgy of nickel process.