8results about How to "Crystal stable" patented technology

A eutectic comprising a compound of formula 1 and oxalic acid,

This invention relates to the field of water pollution purification, specifically to a process for purifying and recycling industrial wastewater. The process provided by this invention induces the in-situ crystallization and precipitation of calcium and magnesium ions, primarily in the form of aragonite-type calcium carbonate, by adding a crystal form regulator to the wastewater. This replaces the traditional precipitation method using precipitants, fundamentally preventing the generation of secondary sludge. Simultaneously, a quencher regulates the type and concentration of active free radicals within the system, achieving targeted degradation of organic matter while maximizing the retention of beneficial ions in the water, ensuring the corrosion inhibition performance of the recycled water. This invention features a simple operation, requires no mechanical structural modifications, and can be directly adapted to existing industrial water treatment systems. It effectively solves the problem of simultaneously addressing hardness removal and organic matter degradation in circulating water wastewater treatment, significantly improving the purification and recycling efficiency of wastewater. The treated effluent can be directly reused in industrial circulating water systems.

The application relates to the technical field of wastewater treatment, and particularly discloses a high-efficiency recovery and biochemical carbon source method for sodium acetate in acephate wastewater. The high-efficiency recovery and biochemical carbon source method for sodium acetate in acephate wastewater comprises the following steps: solvent recovery, high-temperature hydrolysis, methanol recovery and evaporation concentration are performed on acephate wastewater to obtain a salt-containing concentrated mother liquor and condensate water A; the salt-containing concentrated mother liquor is subjected to centrifugal separation to separate out a mixed salt containing sodium sulfate and sodium phosphate, and a salt-separated mother liquor is obtained; the salt-separated mother liquor is continuously cooled and crystallized to obtain a crystal slurry containing sodium acetate crystals; the crystal slurry containing the sodium acetate crystals is subjected to centrifugal separation to obtain a sodium acetate product and a crystallization mother liquor; part of the crystallization mother liquor is returned to a sodium acetate crystallization system to adjust the solid content of the crystal slurry, and the other part is subjected to drying treatment to obtain a mixed salt and condensate water B; the condensate water A and the condensate water B are sent to a biochemical system for treatment, and treated water is obtained.

The invention relates to the technical field of graphene production equipment, and discloses a vacuum environment and adsorption system integrated cotton stalk graphene induction device which comprises a control console, a smashing mechanism, a conveying table and a vacuum system are fixed to the upper surface of the control console, and a supporting frame is fixed to the upper surface of the control console; a first electric push rod is fixed to the inner wall of the supporting frame, a rotating disc is fixedly arranged at the output end of the servo motor, the outer wall of the rotating disc rotates on the inner wall of the control table, multiple sets of sealing boxes are arranged on the upper surface of the rotating disc, and a discharging assembly is arranged on the upper surface of the control table. Cotton stalks are poured into the smashing mechanism and mixed and smashed with salt materials, at the moment, the cotton stalks are put into the sealing box to be subjected to vacuum treatment, the cotton stalks are prevented from being burnt, the sealing box is matched with the sealing assembly, and by-products can be adsorbed while vacuum treatment is conducted; and the servo motor is matched with the turntable, so that the effect of full-automatic continuous production of graphene can be achieved.

The invention discloses portland cement clinker based on marlstone and a preparation method thereof, and relates to the technical field of cement. The method comprises the following steps: crushing, grinding and drying natural marlstone, spraying and activating by using a mixed steeping liquor containing sodium hydroxide, lanthanum nitrate and cerous nitrate, and drying and roasting at low temperature to obtain modified marlstone powder; mixing the powder with calcium carbonate, quartz powder, ferric oxide, dihydrate gypsum, calcium fluoride and barium carbonate, and pressing into a green body; and finally, sequentially carrying out two-stage mineralization calcination on the green body, introducing oxygen-enriched air in a heat preservation stage, continuously calcining, and cooling to obtain the cement clinker. According to the invention, marlstone is used as a main raw material, and the obtained cement clinker has excellent sulfate corrosion resistance through dipping activation and multi-stage calcination processes.

The invention provides a pyridostigmine bromide crystal and a preparation method thereof, and belongs to the field of medicine preparation. The pyridostigmine bromide crystal prepared by utilizing the intermediate I is superior to a commercially available product in purity, high in yield, free of impurity detection and superior to the prior art in quality; meanwhile, the process is simple and convenient, can be completed by conventional test equipment, and is high in batch yield, low in cost, stable in crystal form of the obtained product and suitable for industrial mass production.

The invention relates to an array substrate and a preparation method thereof, a display panel and a display device, the array substrate comprises a substrate, an array layer and a conductor layer, and the substrate comprises a first substrate, a buffer layer and a second substrate which are sequentially stacked in the thickness direction of the substrate; the array layer is arranged on the side, away from the buffer layer, of the second substrate, and the array layer comprises a plurality of transistors; the conductor layer is arranged on the side, away from the array layer, of the second substrate, and the orthographic projection of the conductor layer in the thickness direction is at least partially overlapped with the orthographic projection of the transistor. The embodiment of the invention provides an array substrate and a preparation method thereof, a display panel and a display device, which can reduce the influence of a metal layer on a transistor forming process and improve the reliability of a formed transistor.

A crystal form of a triazolopyridine-substituted indazole compound and a preparation method thereof, and specifically discloses a crystal form of a compound shown in formula (I) and a preparation method thereof.