69results about How to "High operational controllability" patented technology

The invention discloses a preparation method and application of a supported metal catalyst. The supported metal catalyst comprises carrier framework materials and nano particles, loaded on the surfaces of the carrier framework materials, of metal or metal oxide, or metal ions chelated on the surfaces of the carrier framework materials, wherein the metal ions and nano particles of the metal or metal oxide are loaded on the surfaces of the carrier framework materials through the polymerization layers, adhered to the surfaces of the carrier framework materials, of catechol derivatives. The preparation method of the supported metal catalyst has the advantages that the method is simple, various carrier framework materials are used, one or more metal ions or nano particles can be loaded, and universality is achieved; the supported metal catalyst is good in active metal dispersity, large in carrier specific surface area, low in use amount, low in cost, and the like; the catalyst loaded with noble metal is catalyst material which is widely used and environmental friendly and is efficiently applicable to environmental chemical engineering fields such as dye wastewater decoloring, wastewater organic pollutant removing, car tail gas treatment, air purification, hydrogenation and reforming catalytic reaction, gas sensors and fuel cells.

The invention discloses a high-nitrogen steel pressurized welding device and a method for welding high-nitrogen steel by using the device, comprising an airtight welding chamber, a gas mixing chamber, and a vacuum pump; the airtight welding chamber communicates with the gas mixing chamber and the vacuum pump respectively through gas pipelines ;The airtight welding room is equipped with bracket, welding power supply, welding wire frame, wire feeding mechanism and welding torch; the cooling plate is arranged above the bracket; the welding wire sleeve is connected under the wire feeding mechanism; the welding power supply is connected with the welding wire sleeve and the bracket through electrode wires respectively The cold source is set in the cooling plate; the welding base metal is placed on the cooling plate; the raw material gas is mixed in the gas mixing chamber and then input into the airtight welding room; the position of the welding wire and the welding torch is adjusted, the welding power is turned on, and welding is carried out. By controlling the system shielding gas composition, system total pressure and cooling parameters, the nitrogen content in the high-nitrogen steel weld can be fixed, and the mechanical properties of the high-nitrogen steel weld can be improved. Using the system of the present invention for high-nitrogen steel welding, the nitrogen content of the weld can reach More than 95% of the base material.

The invention discloses an organic compound containing xanthene and an application thereof. A structural general formula of the organic compound is shown as a general formula (1). The vitrification temperature of the organic compound is high, the molecular thermal stability is strong, the organic compound has appropriate HOMO and LUMO energy level and high Eg, and the photoelectric property of an OLED device and life of the OLED device are effectively increased through optimization of a device structure.

The invention belongs to the field of equipment related to carbon capture technologies, and discloses a continuous circulation carbon dioxide capture system on the basis of in-situ adsorption/desorption modes.The continuous circulation carbon dioxide capture system comprises a flue gas purification module, a pressurization module, an isothermal circulation carbon capture reactor group, a gas outlet condensation device, a negative-pressure module and the like which are sequentially connected with one another.The designed isothermal circulation carbon capture reactor group comprises a carbonization reactor and a regeneration reactor which cling to each other to transfer heat, and functions of the carbonization reactor and the regeneration reactor can be switched over after reaction is carried out for a certain time; the carbonization reactor is provided with the pressurization module, the regeneration reactor (42) is provided with the negative-pressure module, and an appropriate quantity of water vapor can be continuously supplied for the regeneration reactor (42).The continuous circulation carbon dioxide capture system has the advantages that the integral reaction efficiency can be obviously improved as compared with existing continuous carbon capture modes, abrasion of solid adsorbent particles due to collision can be eliminated, temperature difference between adsorption and desorption can be reduced to a great extent, the continuous circulation carbon dioxide capture system is economical and environmentally friendly, and the like.

The invention discloses a decolorization treatment method for colored liquid waste. A loaded metal catalyst and a reducing agent are adopted, colored liquid waste can be rapidly decolored, no loaded metal catalyst is consumed in the decolorization process, and continuous colored liquid waste decolorization treatment can be maintained just by adding the reducing agent. After the loaded metal catalyst is inactivated, organic solvent or water can be adopted to conduct washing to remove pollutants attached to the surface of the catalyst, the loaded metal catalyst can have activity again, and the color of the colored liquid waste is removed rapidly together with the reducing agent. The decolorization treatment method for the colored liquid waste is simple in process, all raw materials are low in price, the quantity of treated colored liquid waste is large, large-scale application is achieved easily, the loaded metal catalyst can be cycled for a long time, and decolorization treatment of colored liquid waste is greatly lowered.

The invention discloses an organic compound with xanthene and application thereof in OLED (organic LED) devices; the organic compound has a structural general formula shown as in formula (1). The organic compound provided herein has high vitrification temperature and high molecular thermal stability, has suitable HOMO and LUMO energy levels and high Eg, and by optimizing device structure, it is possible to effectively improve photoelectric properties of OLED devices and prolong the lives of the OLED devices.

The present disclosure relates to a hydraulic system for construction equipment, and more particularly, to a hydraulic system, in which an actuator is controlled by a pump/motor. The hydraulic system for construction equipment according to the present disclosure includes logic valves in first and second hydraulic lines provided to an actuator, respectively, and when it is desired to operate the actuator in a state where an operation of the actuator is stopped by closing the logic valves, a pressure difference may be resolved by increasing pressure in sections of a pump/motor and the logic valves in advance even if a load is applied to the actuator, and thus the actuator may implement a desired operation without being affected by the load. That is, it is possible to improve operation controllability of the actuator.

The invention discloses a method for measuring a soil soluble organic carbon isotope. In the method, an EA-IRMS method is adopted. The method comprises the following steps: firstly, extracting soil water-soluble organic carbon through a multi-water to soil mass ratio method to obtain a solution containing the soil water-soluble organic carbon; then, concentrating the obtained solution through freeze drying; adding purified water into concentrated substances for re-dissolving, drying and measuring delta<13>C through EA-IRMS. The novel method for measuring the soil soluble organic carbon isotope provided by the invention is rapid and efficient, is easy and convenient to operate, and has high measuring accuracy.

The invention discloses a feeding method for improving the fermentation growth efficiency of butyric acid bacteria, and belongs to the technical field of agricultural living things. The feeding method for improving the fermentation growth efficiency of butyric acid bacteria is realized through optimizing the specific growth rate of the butyric acid bacteria and controlling acid metabolism, and is concretely characterized in that exponential fed-batch of a glucose solution is carried out from the 6th hour to the 13th hour of the butyric acid bacterium fermentation culture process at a specific growth rate of 0.1-0.4 h<-1> and preferably 0.225 h<-1>. The method has the characteristics of simple and clear fed components, low cost, clear fed0batch rate, high operating controllability, and suitableness for fermenting production. The method overcomes the technical prejudice that the preset value of the specific growth rate of exponential fed-batch approaches 80-90% of a maximum specific growth rate, and has the advantages of great promotion of the logarithmic growth of butyric acid bacterium cells through exponential fed-batch at a low preset value, substantial reduction of the concentrations of acetic acid and butyric acid generated in the fermentation process, and extremely technical effects.

The invention provides a corrosion-resistant coating reinforced drill rod. The corrosion-resistant coating reinforced drill rod comprises a drill rod base body, a Ni-Al layer which is arranged on thesurface of the drill rod base body, and a Fe-based amorphous alloy coating arranged on the surface of the Ni-Al layer, wherein the Fe-based amorphous alloy coating comprises the following components of 13.0wt%-15.0wt% of Cr, 25.0wt%-27.0wt% of Mo, 1.0wt%-2.0wt% of B, 3.0wt%-5.0wt% of Y, 3.0wt%-5.0wt% of C and the balance Fe. According to the corrosion-resistant coating reinforced drill rod, the Fe-based amorphous alloy coating with the above components is adopted, and the amorphous alloy coating has no defects such as crystal boundary dislocation in common alloy. The Cr element in the corrosion-resistant coating reinforced drill rod has good pitting resistance, so that the corrosion resistance of the whole material is good. The invention also provides a preparation method of the corrosion-resistant coating reinforced drill rod.

The invention belongs to the field of windows, and particularly relates to a labor-saving anti-collision sliding window which comprises a window frame and a window body. A sliding groove is formed inthe inner bottom of the window frame, a sliding rail is fixedly connected into the sliding groove and made of permanent magnet materials, a movable groove is formed in the lower end of the window body, a base capable of moving left and right is arranged in the movable groove, the lower end of the base is provided with a sliding groove matched with the sliding rail, a cavity is formed in the base,a magnet strip capable of moving up and down is arranged in the cavity, the lower end of the magnet strip and the upper end of the sliding rail are in homopolar repulsion, the inner top of the cavityis fixedly connected with a plurality of cylinders, piston blocks are slidably and hermetically connected into the cylinders, the lower ends of the piston blocks are fixedly connected with connectingrods, the lower ends of the connecting rods are fixedly connected with the upper ends of the magnet strips, an adjusting mechanism for adjusting the piston blocks is arranged on the window body, and the side wall of the window is fixedly connected with a handle. By the aid of repulsive force between the magnet strip and the magnetic sliding rail, the window is lifted upwards in the moving process,and the opening and closing difficulty of the window is reduced.

The invention discloses an organic compound containing dimethylanthracene and application thereof in an organic light-emitting device (OLED). A structure general formula of the organic compound is represented as the formula (I). The compound has high glass transition temperature and molecular thermostability, appropriate HOMO and LUMO energy level and high Eg. Through structural optimization of the device, photoelectric performance and service life of the OLED can be effectively improved.

The present invention discloses a new method for separating lactone type lovastatin from fermentum rubrum. According to the method, commercially available functional fermentum rubrum powder is adopted as a raw material, ethanol extraction and vacuum suction filtration are performed, silica gel column chromatography one-step separation is performed, and purity analysis and structure identification are performed respectively through a chromatography method and a spectroscopy method after concentration crystallization so as to obtain the lovastatin crystal having the purity of more than or equal to 98% and having the lactone type structure, wherein the extraction rate is more than or equal to 85%. According to the present invention, the method has characteristics of simple production equipment, simple and feasible process, simple operation, short time consuming, high bulk drug utilization rate and low production cost, and is the energy-saving and environmental protection method.

The invention belongs to the technical field of chemicals and discloses a method for preparing a cyclopentane refrigerant. Efficient separation of cyclopentane from 2,2-dimethyl butane is achieved byusing an extraction distillation technique with acetonitrile as an extraction agent. The method for preparing the cyclopentane refrigerant comprises the following steps: by taking a C5 mixture as a raw material, carrying out light component desorption, heavy component desorption, extraction distillation and desorption; by taking acetonitrile as an extraction agent, feeding a material from the topof a heavy component desorption tower into the middle part of an extraction distillation tower; feeding the extraction agent into the upper part of the extraction distillation tower, collecting 2,2-dimethyl butane from the top of the tower, and desorbing an enriched solvent at the bottom of the tower in a desorption tower, thereby obtaining the cyclopentane refrigerant. By adopting the method forpreparing the cyclopentane refrigerant, the obtained cyclopentane has purity not less than 99%, and is low in water content. The extraction agent is good in stability, high in selectivity, low in solvent ratio, low in boiling point, simple in process procedure, high in operation controllability, low in energy consumption, high in product purity, possible in extraction agent circulation, small in pollution and applicable to industrial production. The method is applicable to preparation of high-quality cyclopentane, and is particularly applicable to preparation of cyclopentane refrigerants of environmental-friendly refrigerators.

Provided are the use of poly(N-isopropylacrylamide-co-butyl methacrylate) in preparing an embolism material for blood vessels, an embolism material for blood vessels and the use thereof in preparation of drugs. The embolism material for blood vessels comprises poly(N-isopropylacrylamide-co-butyl methacrylate) and a dispersion medium consisting of an electrolyte, a contrast agent, a pH regulator and water. The concentrations of the polymer, electrolyte and contrast agent are respectively 5-30 mg/ml, 0.1-30 mg/ml and 100-350 mg/ml based on iodine. The embolism material for blood vessels is suitable for embolization therapy of tumors in hypervascular and parenchymal visceral organs.

The invention discloses a method for improving the clostridium butyricum growth efficiency, and belongs to the field of food fermentation. The invention provides the method for improving the clostridium butyricum growth efficiency by reducing generation of acidic products in the fermentation process and promoting ethanol synthesis, and the method particularly comprises the step that phenylalanine solution feeding is conducted in a sterile and anaerobic mode at constant speed when three stage fermentation of clostridium butyricum is conducted for 0.8 h till 4 h to 6 h before fermentation is completed, wherein the total concentration of acetaldehyde ranges from 1.5 mmol/L to 5.0 mmol/L. According to the method for improving the clostridium butyricum growth efficiency, acetaldehyde molecules serve as metabolic regulation molecules for use; by means of addition of the acetaldehyde molecules, the oxidation efficiency of NADH is promoted, the synthesis efficiency of ethanol is significantly enhanced, the generation efficiency of acetic acid and butyric acid is significantly reduced, the growth efficiency of the clostridium butyricum is further improved, and an excellent technical effect is produced. The method for improving the clostridium butyricum growth efficiency has the advantages that the materials are easy to purchase, the operation controllability is high, and the method is suitable for clostridium butyricum fermentation production.

The invention discloses a preparation method of a WC-Co hard alloy with an average grain size larger than 15 microns, and belongs to the field of block material preparation. The preparation method comprises the steps of taking coarse-particle WC powder as raw material, sieving and grading, stirring and mixing the sieved and graded raw material with a mixed solution formed by PEG and diffusion oilin a certain proportion, and drying and pressing to prepare a WC cold-pressed green body; directly coating the cold-pressed green body with Co powder in different masses, compacting, sintering and cooling in a low-pressure sintering furnace to obtain a WC-Co hard alloy material with WC grain size larger than 15 microns; or sintering the cold-pressed green body to prepare porous carbide; and then coating the porous carbide with the Co powder in different masses and compacting, and sintering at low pressure to prepare the hard alloy material with WC grain size larger than 15 microns and different Co content.