57results about How to "Ease of large-scale industrial application" patented technology

The invention discloses a method for processing and separate recycling of printing and dyeing wastewater, which comprises the following steps: after the printing and dyeing wastewater is firstly processed by an anaerobic reactor, a hypoxia reactor and an aerobic reactor, the separate recycling of part of the water is used for a desizing process of printing and dyeing technology; then, after the rest wastewater is processed by an aerator biofilter, the separate recycling of the part of the water is used for a boiling-off process of the printing and dyeing technology; then, after the rest wastewater is processed by an ultrafiltration reactor, the separate recycling of the part of the water is used for bleaching process and mercerization process of the printing and dyeing technology; finally, the rest water is processed by an anti-permeability reactor and the separate recycling of the part of the water is used for dyeing process, printing process and ordering process. After being processed by the invention, the printing and dyeing wastewater can be carried out the separate recycling quickly and high-efficiently and the recycling rate of the wastewater reaches more than 70 percent; meanwhile, the fee of processing and recycling the wastewater can be saved; the service life of advanced treatment equipment can be prolonged, which is easy for a large-scale industrialized application.

The invention discloses a macrostructure and microstructure controllable hydroxyapatite porous ceramic, a preparation method thereof and an application of the ceramic. The hydroxyapatite porous ceramic is subjected to 3D (three-dimensional) direct-writing to obtain a three-dimensional structure, and freeze pouring regulation is performed to obtain a microstructure porous structure. A raw materialA is added into a solvent containing dispersing agents and mixed with the solvent to obtain suspension liquid, and then gel is added into the suspension liquid and mixed with the suspension liquid toobtain slurry. The raw material A comprises hydroxyapatite powder, the slurry passes 3D direct-writing equipment and is controlled to be in a gel state when passing the direct-writing equipment, the slurry is printed and frozen to obtain a green body with a three-dimensional structure, and the green body is freeze-dried and sintered to obtain the macrostructure and microstructure controllable hydroxyapatite porous ceramic. Direct-writing and freeze pouring technologies are initiatively and efficiently combined, the obtained hydroxyapatite porous ceramic is used as a bone scaffold, and the customization requirements of different bone tissues can be met.

The invention discloses a method for preparing a material with controllable macro and micro structures. The method is realized by combining a 3D direct writing molding technology and a freezing casting method, and specifically includes adding a raw material A into a solvent containing a dispersant and mixing for the first time to obtain a suspension, and then adding a gel into the suspension and mixing for the second time to obtain a slurry material; and passing, by the slurry material, through 3D direct writing equipment, controlling the slurry material to be in a gel state when passing through the direct writing equipment, printing and freezing the material to obtain a blank body with a three-dimensional structure, freeze drying and sintering the blank body to obtain the material with controllable macro and micro structures. The method firstly realizes the high-efficiency combination of direct writing molding and the freezing casting technology, and overcomes the limitation of the traditional preparation technology in simultaneously realizing the microscopic pore structure and the complex three-dimensional structure.

The invention relates to 3D direct writing zirconium oxide colloid ink, which comprises the following raw materials: zirconium oxide particles, a solvent, a binder, an acid agent, an alkali agent anda dispersant, wherein the particle size of the zirconium oxide particles is 0.05-2 [mu]m, the solid content of the zirconium oxide particles in the ink is 40-56 vol%, the dispersant is one or a variety of materials selected from polyacrylic acid, polyvinyl acid, ammonium polyacrylate, polyethyleneimine, polyacrylate, polyvinyl acid salt and polycarboxylate, the dispersant accounts for 0.1-4 wt% ofthe mass of the zirconium oxide particle dry powder, the amount of the acid does not exceed 0.1% of the mass of the ink, the amount of the alkali does not exceed 0.1% of the mass of the ink, and a molar ratio of the hydrogen ion to the hydroxide ion in the acid agent and the alkali agent is (0.01-4):1. According to the present invention, with the application of the 3D direct writing zirconium oxide colloid ink to print at the room temperature, the high solid content can be provided while the 3D direct writing zirconium oxide colloid ink can be outflow from the fine spraying nozzle and the clogging cannot occur, the 3D direct writing zirconium oxide colloid ink can be rapidly cured into the fine wire with a certain strength so as to be used for various modeling, and the 3D direct writing zirconium oxide colloid ink has good rheological property.

The invention discloses a preparation method of a C/SiC composite material. The preparation method comprises the following steps: (1) depositing a pyrolytic carbon interface layer on the carbon fibersurface of a preform by adopting a chemical vapor deposition process, (2) depositing a SiC matrix by adopting a CVI process to form a C/SiC blank material, and (3) dipping the C/SiC blank material inthe SiC slurry, taking out the C/SiC blank material, and depositing a SiC matrix by adopting the CVI process to obtain the C/SiC composite material meeting the requirements. According to the method, aspecific carbon fiber raw material is selected, a process of combining a CVI deposition SiC matrix and a SiC slurry permeation process is adopted, and the prepared C/SiC composite material has excellent mechanical properties at normal temperature and high temperature of 1500 DEG C, and the preparation method is simple, efficient and easy for large-scale industrial application.

The invention discloses a pulse discharge flash sintering metal-based part near-net forming technology method, and belongs to the technical field of powder metallurgy. The problems that a traditionalpowder metallurgy part production process is high in power consumption, tedious and complex in process flow and low in production efficiency are solved. The method mainly comprises the steps of pushing metal powder into a mold, and forming the metal powder through stamping; enabling the inner wall, making contact with the metal powder, of the mold to have the insulation property; and enabling stamping to serve as an electrode of a pulse discharge body, and enabling stamping to synchronously carry out pulse discharge in the metal powder forming process. According to the method, the process flowis greatly simplified, large-scale industrialized application is easily achieved, the near-net forming advantage is achieved, the product quality is high, porosity adjusting control is convenient, practicality is high, and the method has the important significance in the powder metallurgy industry manufacturing field.

The invention relates to a preparation method and application of a self-cleaning type titanium dioxide nano-fiber membrane material. The method comprises the following steps: adding a titanium sourceinto a reaction container; while stirring, adding absolute ethyl alcohol; then adding glacial acetic acid and continuously stirring at room temperature until a reaction solution is milky white, so asto obtain titanium dioxide sol; immersing carbon paper into the titanium dioxide sol and adsorbing titanium dioxide nanoparticles on the surface of the carbon paper, so as to obtain carbon paper loaded with the titanium dioxide nanoparticles; putting the obtained carbon paper into a sodium hydroxide solution and carrying out hydrothermal reaction; forming titanium dioxide nano-fibers on the surface of the carbon paper and carrying out self-assembling to obtain the titanium dioxide nano-fiber membrane material. The self-cleaning type titanium dioxide nano-fiber membrane material prepared by thepreparation method has good filtering performance on organic molecules and nanoparticles with positive charges.

The invention relates to a double-stage adsorption refrigerating recycling system which is characterized by consisting of a primary adsorption bed, a secondary adsorption bed, a condenser, an evaporator, a heat exchange tube, a valve and an auxiliary pipeline. Heteroatom SAPO-34 molecular sieves are filled in the primary adsorption bed; and hydrophobic silica gel, activated carbon, pure silicon molecular sieves and at least one of MCM (mesoporous crystalline material) series mesoporous silica materials are filled in the secondary adsorption bed. A desorption process of the primary adsorption bed can be greatly improved by an adsorption effect of the secondary adsorption bed of the double-stage adsorption refrigerating recycling system, and the temperature of a driving heat source of the primary adsorption bed is reduced. The double-stage adsorption refrigerating recycling system has the advantages of low desorption temperature and high adsorbent recycling adsorption quantity, reduction of the size of the system is facilitated, and the efficiency of the adsorption refrigerating system is improved.

The invention discloses a photoluminescent fiber and a preparation method thereof. Quantum dots are used as luminescent particles, high-molecular polymers are used as a spinning substrate, the quantumdots and the high-molecular polymers are blended to prepare a spinning solution, and then the photoluminescent fiber is prepared through a wet spinning process. The photoluminescent fiber prepared bythe method has excellent optical stability and mechanical properties, and has a good application prospect in the fields of clothing, pharmacy, environment, petrochemical industry, anti-counterfeitingindustry, gas sensors, human health monitors and the like. The preparation method provided by the invention is simple to perform, has a wide application range of spinning solutions, and is low in cost and easy to apply to large-scale industrial application.

The invention relates to a silicon melt external refining device and method and belongs to the technical field of industrial silicon purification. A ladle bottom of the device is equipped with two gas nozzles, and an included angle theta between each nozzle circle center and a ladle bottom circle center meets a relationship of 90 degrees<=theta<=180 degrees; and the distance between each nozzle circle center and the ladle bottom circle center, nozzle radius r and ladle bottom radius R meet a relationship shown in the description. Compressed air or refining gas is continuously introduced into the two gas nozzles arranged on the ladle bottom; silicon melt which is smelted from a submerged arc furnace is placed into a ladle; with the increase of silicon melt discharged from the ladle, refining agents are added and the refining gas component and flow are adjusted; external blowing and slagging refining are performed; dross on the surface of the silicon melt is skimmed; and pouring is performed on the silicon melt to obtain a high-purification industrial silicon product. The device and method provided by the invention ensure the dynamic conditions of the silicon melt in the specially-made ladle, eliminate stirring dead angles, and effectively increase qualities of the silicon product.