11results about How to "Optimize the process route" patented technology

The invention discloses a preparation device and process flow of diisopropylbenzene hydroperoxide. According to the process, 1, 4-diisopropyl is taken as a raw material, and the diisopropylbenzene hydroperoxide is prepared through raw material pretreatment, oxidation, gas-liquid separation, concentration and filtration. According to the preparation process of the diisopropylbenzene hydroperoxide provided by the invention, concentration is performed twice, so that the concentration of the product is greatly improved. The unreacted raw material diisopropylbenzene returns to the raw material tank for recycling after being condensed, so that the raw material utilization rate is improved, the production cost is reduced, and the method is suitable for industrial production. The recorded process flow is simple, the raw material recovery rate is high, and the method is green and environment-friendly.

The invention discloses a method for synthesizing N-nitroso-N-methyl-4-aminobutyric acid, wherein N-methylpyrrolidone shown in formula I is used as a starting material, and the compound shown in formula II is formed by alkali ring opening and hydrolysis, and the compound shown in formula II is reacted with nitrite to obtain a product shown in formula III. The method of the invention has a simple process route, is easy to operate, and has mild reaction conditions. The target product N-nitroso-N-methyl-4-aminobutyric acid is obtained by two-step organic synthesis, and HNMR shows no impurity peaks.

The invention discloses a printing plate roller machining process. The printing plate roller machining process comprises the following steps that roller body machining is conducted, specifically, a seamless steel pipe with the wall thickness being 15-18 mm is selected to be machined into a printing roller body; nickel plating is conducted, specifically, nickel plating is conducted in a semi-immersion mode, and a nickel layer with the thickness being 10 micrometers is formed; copper plating is conducted, specifically, copper plating machining is conducted in a semi-immersion mode, and a copper layer with the thickness of 0.12-0.15 mm is formed on the surface of the roller body; finish machining is conducted, specifically, finish machining treatment is conducted on the copper-plated plate roller; electronic engraving is conducted, specifically, laser engraving is conducted on the surface of the roller through a laser engraving machine; cleaning: cleaning the plate roller by using a methanol aqueous solution in a spraying manner; and chromium plating is conducted, specifically, the roller body is immersed in an electroplating bath to be subjected to chromium plating machining, and a chromium layer with the thickness being 5-7 microns is formed.

The invention relates to the technical field of catalyst synthesis, in particular to an alkoxy titanium non-metallocene catalyst for preparing polyethylene wax and a preparation method of the alkoxy titanium non-metallocene catalyst. The alkoxy titanium catalyst prepared by the invention can be directly used for ethylene polymerization reaction, the polymerization process system is simple, and the alkyl aluminum halide with impurity removal dosage has high catalytic polymerization reaction activity; according to the present invention, no additional organic boron compound or methyl chlorooxane needs to be added, no chain transfer agent needs to be added to adjust the molecular weight, the structure is novel, the catalytic activity is outstanding, the synthesis process is simple, the ligand design is diversified, and the molecular weight and the activity of the polymer can be effectively improved by designing different types of ligands; accurate regulation and control on the activity and selectivity of the catalyst are achieved, then the olefin polymer with the specific structure and performance is obtained, and the characteristic provides a wide space for preparing high polymer materials with the specific performance and application.

This invention relates to the field of membrane technology, specifically to a nitrogen-doped carbon nanofiber catalytic membrane loaded with monatomic iron, its preparation method, and its application. It includes the following steps: (1) dissolving polyacrylonitrile and ferric chloride hexahydrate in a solvent to obtain an electrospinning precursor solution; (2) electrospinning the electrospinning precursor solution to obtain a precursor fiber membrane; (3) calcining the precursor fiber membrane under a protective atmosphere to obtain a nitrogen-doped carbon nanofiber catalytic membrane loaded with monatomic iron. The nitrogen-doped carbon nanofiber catalytic membrane loaded with monatomic iron prepared by this invention achieves near-complete utilization of metal atoms in advanced oxidation processes, significantly improving pollutant degradation activity and reaction kinetics; this material also possesses excellent structural stability and recyclability, providing a new design concept and technical path for developing efficient and scalable water treatment catalytic materials.

The invention relates to the field of solid waste resource utilization, in particular to a coal-based solid waste treatment and high-value utilization method. The coal-based solid waste treatment and high-value utilization method comprises the following steps: carrying out thermal oxidation on lignite to obtain oxidized lignite; mixing the oxidized lignite with a chemical activator dispersion liquid, and carrying out a solvothermal reaction to obtain a turbid liquid; carrying out solid-liquid separation on the turbid liquid to obtain filter residues and filtrate; calcining the filter residues to obtain a medium element compound fertilizer; and adding an acidic solution into the filtrate to adjust the pH to be acidic, thereby obtaining the humic acid. According to the method, the humic acid is prepared, meanwhile, the medium element compound fertilizer is prepared from the residues, the process route is improved, the economic benefit is greatly improved, and high additional value and multi-path resource utilization of the lignite solid waste are achieved.

The utility model relates to the technical field of battery pack heat exchangers, in particular to a highly-integrated light-weight battery tray structure which comprises an upper-layer plate, and the periphery of the upper-layer plate is provided with an inner-layer flange formed by bending perpendicular to one side of an upper-layer plate main body; the periphery of the lower-layer plate is provided with an outer-layer flange formed by bending perpendicular to one side of a lower-layer plate main body; the upper-layer plate is installed in the inner-layer turnup of the lower-layer plate, a main body of the upper-layer plate is attached to a main body of the lower-layer plate, the inner-layer turnup and the outer-layer turnup are arranged at intervals, and the upper-layer plate and the lower-layer plate form a water channel plate assembly; the bottom protection plates are arranged in the width direction or the length direction of the water channel plate assembly, and the two ends of each bottom protection plate are connected to the bottom face of the lower layer plate and correspond to the interval between the inner layer flanging and the outer layer flanging. According to the battery tray structure, the traditional relatively complicated box body tailor-welded frame process is changed, and the purposes of process manufacturing optimization and structure optimization are achieved.

The invention discloses a bearing ring tool made of high-temperature carburizing bearing steel and a control method based on heat treatment deformation of the bearing ring tool, and relates to the technical field of bearing machining. The invention aims to solve the problems that the existing high-temperature carburizing bearing steel with larger diameter and wall thickness has larger deformation after carburizing, the shape correction is unstable during mechanical shape correction treatment, and the quenching and tempering interval is too long to cause part cracking. The high-temperature carburizing bearing ring is composed of an annular structure and an annular protrusion, the outer diameter of the annular structure is the same as the size of the high-temperature carburizing bearing steel bearing ring, and the height of the annular structure is 10 mm; an upward annular protrusion is arranged at the position of an inner ring of the annular structure, and the height of the annular protrusion is 3 mm. The outer side of the annular protrusion is attached to the inner side of the high-temperature carburizing bearing steel bearing ring. The control method comprises the steps of parameter selection; mounting a tool; heat treatment; and surface treatment. The method is used for bearing ring heat treatment.

This invention belongs to the field of electromagnetic wave absorbing materials technology, specifically relating to a nickel-boron-doped cobalt-based layered carbon absorbing material and its preparation method. This invention utilizes a cobalt-based boron imidazole precursor framework as a template, and forms a two-dimensional layered layered double hydroxide (LDH) through a chemical oxidation etching process using nickel ions. This LDH is then subjected to high-temperature reduction to obtain the nickel-boron-doped cobalt-based layered carbon material. This material leverages the unique properties of two-dimensional materials to achieve high impedance matching, allowing electromagnetic waves to enter the absorber at a significant rate. Furthermore, the material's excellent dielectric polarization and magnetic coupling attenuate the electromagnetic waves entering the absorber. The material achieves a minimum reflection loss of -60.1 dB and a maximum effective absorption bandwidth of 6.24 GHz, giving it excellent electromagnetic wave absorption capabilities. The preparation method of this invention is simple and easy to mass-produce.

The present invention discloses a ribless nail support seat and its production process and a ribless nail support seat mold, including an upper die seat, a lower die seat, an upper pad, an upper clamping plate, a stripping plate, a lower template, a lower pad, a guide column, a guide sleeve, a set screw, a strong spring, and a nail groove die. An upper pad is provided below the upper die seat, and an upper clamping plate is provided below the upper pad. The upper clamping plate also clamps and fixes a nail groove punch. The nail groove punch passes through the stripping plate and is opposite to the nail groove die set on the lower template. The nail groove die adopts a structure with a high middle part and low parts at both ends. The present invention can achieve accurate processing position and high processing precision when processing the ribless nail support seat, effectively improve the process quality control capability, reduce product defective rate, reduce damage to raw materials, reduce the generation of scrapped products, and save resources.

The invention provides a corrugated SCR catalyst and a preparation method thereof, and belongs to the field of denitration. The preparation method comprises the following steps: adding nitric acid into a mixed solution of a sodium tungstate dihydrate solution and hydrogen peroxide to obtain an electrolyte; carrying out first electrodeposition treatment on a substrate by using the electrolyte, and carrying out first drying on a product; preparing a homogeneous phase mixed system of a sodium tungstate dihydrate aqueous solution, a hydrochloric acid aqueous solution, oxalic acid and ammonium sulfate, then adding the first electrodeposition product, carrying out a hydrothermal reaction, and carrying out washing, secondary drying and cooling on the obtained product to obtain a single-component WO3 catalyst; loading CeO2 on the single-component WO3 catalyst through second electrodeposition treatment, and then carrying out third drying and roasting. The corrugated SCR catalyst is prepared by the preparation method. The preparation method of the SCR catalyst is easy to operate, the coating composition is single, the adverse effect of the size of the base material on production is reduced, and practical engineering application is facilitated. The obtained catalyst is high in denitration efficiency.