112results about How to "Reduce the chance of spawning" patented technology

The present invention provides a catalyst containing a Y-type molecular sieve. The catalyst comprises a small grain Y-type molecular sieve, aluminium oxide, oxide silicon and clay. The catalyst is characterized in that silicon is rich on the surface of the small grain Y-type molecular sieve, the molar ratio of a molecular sieve body phase skeleton SIO2 / AI2O3 is 5.0-6.0, the molar ratio of surface SiO2 / AI2O3 is 8.0-13.0, a unit cell parameter is 2.460-2.468 nm, the content of sodium oxide is less than or equal to 0.1% by weight, and the average diameter of a grain is 50-800 nm. The catalyst provided by the present invention shows better selectivity of trimethyl pentane in an alkylation reaction of isobutane / butene.

The invention relates to a washing power-assisting device, and belongs to the technical field of washing. The washing power-assisting device comprises an electrolysis power supply and a water quality adjustment unit arranged on the outside of a washing device, wherein the water quality adjustment unit comprises at least a cathode electrode and an anode electrode in pairs, the electrolysis power supply is used for supplying power to the cathode electrode and the anode electrode, a water-pervious diaphragm is arranged between the cathode electrode and the anode electrode which are in pair, the water-pervious hole diameter of the water-pervious diaphragm is smaller than or equal to 2 millimeters and larger than or equal to 1 nanometer, and the distance between the cathode electrode and the anode electrode is larger than or equal to the thickness of the water-pervious diaphragm and smaller than or equal to 20 millimeters. The washing power-assisting device can generate a large number of ultramicro bubbles whose content is mainly hydrogen and super-oxidized factors and has good reducing washing water; a water in-out port of the water quality adjustment unit and the external washing device form a sealed water supply and discharge channel, circulating water flow is maintained in the washing process, water quality is adjusted continuously, and the effects of using washing agents as few as possible or even being free of using the washing agents, saving water and reducing emission are achieved.

The invention relates to an organic electroluminescent part comprising an anode, a cathode and an organic functional layer arranged between the two electrodes; at least one of a hole infusion layer and a hole transmission layer contains matrix and mixed material; the mixed material is inorganic insulation material and chosen from the metal halide, metal oxide or metal carbonate. The invention overcomes the defect that the present OLED part is not very stable and the service life is short; with the structure of mixing insulation material in the part, the luminescent rate of part is effectively promoted and at the same time, the structure is beneficial to relieving the aging of working parts; the thermal stability of the part is properly increased and the service life of the part is greatly prolonged.

The invention discloses a purifying agent for air purifiers and a method for preparing the purifying agent, and relates to the technical field of purifying agents. The purifying agent comprises, by weight, 55-65 parts of modified bamboo pulp fibers, 40-42 parts of nanometer bacterium removing agents, 35-40 parts of sustained-release particles, 30-35 parts of expanded vermiculite, 15-25 parts of modified attapulgite, 10-15 parts of mildew-proof and insect-proof agents and 5-7 parts of stabilizers. The purifying agent and the method have the advantages that raw materials for the purifying agent are safe and environmentally friendly, excellent effects of adsorbing toxic gas such as formaldehyde, toluene and dimethylbenzene in the air can be realized, effects of killing germs can be realized, and accordingly indoor environments can be effectively improved.

The invention relates to a method for changing a conical degree at the moment of obstructing a process of on-line width reduction of a continuous casting crystallizer. The method comprises the following steps: taking solidifying contraction of a blank shell as a starting point, and then introducing a process obstructing condition in the process of reducing the width of the continuous casting crystallizer into the process of on-line width reduction at real time, so as to confirm a control parameter which contains an accelerated speed and a resetting time for adjusting a conical degree in the conical degree changing process of a casting machine, thereby reliably ensuring the safety continuous production of the casting machine. The method provided by the invention has significance on lowering the production cost, promoting the production quality, promoting the metal yield and promoting the market competitiveness of products.

The invention belongs to the technical field of high polymer materials, and particularly relates to a preparation method of double-terminated polysulfone, thepreparation method comprises the following steps: taking bisphenol A and 4, 4 '-dichlorodiphenyl sulfone as reaction monomers, adding an end-capping reagent A with activity lower than that of the bisphenol A, a salt-forming agent and a solvent for reaction until the molecular weight reaches the target molecular weight, adding an end-capping reagent B with activity higher than that of the bisphenol A for continuous reaction, and after the reaction is finished, carrying out post-treatment to obtain the double-terminated polysulfone. The end-capping reagent A with activity lower than that of bisphenol A is added in the early stage of the reaction to reduce the low molecular weight polymer part in the final product so that the mechanical property, heat resistance, thermal stability and other properties of the product are improved. When the reaction is about to be finished, the end-capping reagent B with higher activity than bisphenol A is added so that the molecular weight is controlled through rapid end capping, the performance of products in different batches can be more stable, and the method is more suitable for the field of preparation of hollow fiber membranes.

The invention relates to a bidirectional shaped charge blasting charging structure with a slotted sleeve, and belongs to the technical field of explosive blasting. The bidirectional shaped charge blasting charging structure comprises a sleeve, a shaped charge liner and explosive, wherein the sleeve is arranged in a blast hole in an inserted mode, the shaped charge liner is coaxially arranged in the sleeve and is filled with the explosive; through kerfs are formed in the two sides of the sleeve in the axial direction; the center lines of the two kerfs are coplanar with the axis of the sleeve; the two sides, close to the kerfs, of the shaped charge liner are sunken inwards in a V shape to form a wedge-shaped shaped charge groove; and the outer side edge of the shaped charge liner is fixedlyconnected to the inner wall of the sleeve through an axial supporting partition plate. According to the bidirectional shaped charge blasting charging structure, detonation energy can be concentrated in the specific direction, the utilization rate of the explosion energy is increased, damage to rock mass in other directions is reduced, and a smooth wall surface is conveniently formed.

The invention relates to a method for preparing monodisperse large-particle-diameter silica sol through organic-inorganic complex catalysis. The method includes the following steps that 1, silica powder is added into an inorganic alkali solution, the mass ratio of the silica powder to water is controlled to be 1:8-15, and a reaction is conducted to obtain a silica sol mother solution with the pH of 9.5-10.5; 2, an organic alkali solution is added into the silica sol mother solution, a reaction is conducted at 70-90 DEG C to increase the particle diameter, and the system pH value in the reaction process is controlled to be 9.5-10.5; 3, after the reaction is finished, unreacted solid impurities in reaction liquid are removed, the product is concentrated to needed concentration, and then the monodisperse large-particle-diameter silica sol is obtained. According to the difference of the relative use quantities and proportions of two kinds of catalysts added in two steps and the difference of the particle diameters, activities and use quantities of the selected silica powder, the monodisperse large-particle-diameter silica sol with the mean particle diameter ranging from 20 nm to 100 nm or so is prepared.

The invention provides a preparation method of an MWW structure molecular sieve. The method comprises the following steps: 1, mixing a silicon source, an aluminum source, an alkali agent, a template and water, crystallizing the obtained glue solution, and cooling the crystallized glue solution to obtain a layered system with the upper layer being an organic phase and the lower layer being a molecular sieve slurry, wherein the template contains hexamethyleneimine and aniline; 2, separating the layered system to obtain the organic phase and the molecular sieve slurry; and 3, filtering the molecular sieve slurry, sequentially washing, drying and roasting the obtained filter cake, and distilling or rectifying the obtained filtrate to recover a hexamethyleneimine and water azeotrope and an aniline and water azeotrope. The method allows the superfluous template obtained after crystallization to be fully removed and recovered, and the generation probability of mixed crystals can be reduced when the template is reused; and the method can avoid environment pollution induced by hexamethyleneimine in discharged wastes.

The invention provides a wet flue gas source heat pump system capable of controlling input flue gas pressure. The system comprises a flue gas inlet, a heat exchanger, a flue gas pressure adjusting device, a pressure control valve, a controller, a turbine, a circulating water tank and a user side heat output device. A temperature and / or pressure sensor is mounted on a flue gas outlet at the upper portion of the heat exchanger and used for detecting the temperature and / or pressure of discharged flue gas. The flue gas pressure adjusting device and the temperature and / or pressure sensor are in data connection with the controller, the controller automatically adjusts the power of the flue gas pressure adjusting device according to the detected temperature and / or pressure, and the pressure adjusting valve and the temperature and / or pressure sensor are in data connection with the controller. The controller automatically adjusts the control threshold value of the pressure adjusting valve according to the detected temperature and / or pressure. The power of the flue gas pressure adjusting device and the threshold value of the pressure adjusting valve can be controlled according to the flue gas temperature and pressure of the outlet of the heat exchanger, it can be guaranteed that the temperature and flow of a hot water outlet of the heat exchanger meet the heat supply requirement, then parameters of flue gas entering the turbine are changed, and meanwhile use of electric energy of equipment in the system is met.

The invention relates to a preparation technology of lauromacrogol. The preparation technology takes lauryl alcohol, potassium hydroxide, oxirane, absolute ethyl alcohol and activated carbon as raw materials. The preparation technology is simple; no special equipment is required; a solvent can be recycled, so that the industrial production cost is lowered; potassium hydroxide serves as a catalyst, so that operation is simplified; the content of heavy metal is controlled easily according to a medicinal quality standard requirement; lauromacrogol is high in yield.

The invention relates to the technical field of Brassica rapa powder preparation, and specifically relates to a preparation method of Brassica rapa powder. The method comprises the following steps: S1, cutting fresh Brassica rapa into pieces, making the solid-liquid ratio of Brassica rapa pieces to water be 1:1 to 1:5, putting the mixture of Brassica rapa pieces and water in a tissue stamp mill for pulping to get Brassica rapa pulp; S2, pouring the Brassica rapa pulp into a colloid mill for colloid milling to get colloid-milled Brassica rapa pulp; and S3, adding anti-caking agent to the colloid-milled Brassica rapa pulp to get anti-caking Brassica rapa pulp. The invention discloses a preparation method of Brassica rapa powder. The Brassica rapa powder prepared by the method is yellow, has uniform particles, is non-caking and fragrant, and tastes of Brassica rapa. The Brassica rapa powder is easy to eat, and can be eaten directly after being mixed with water. Moreover, the Brassica rapa powder can be preserved at room temperature for a long time, so that the supply period of the product is prolonged, and the production and sale peaks can be balanced.

The invention relates to a smoke classifying and inner circulating type low-NOx and high-calorific-value fuel gas combustion device. The device is characterized in that a device body comprises a combustor throat port, a central barrel, a flame stabilizer or a cyclone, a combustion supporting air channel which consists of a direct-flow air channel and a spiral-flow air channel, and a plurality of inner fuel gas guns and outer fuel gas guns, wherein gun heads of the plurality of inner fuel gas guns and the outer fuel gas guns are arranged at the outer side of the combustor throat port in an extending manner; a plurality of front fuel gas injecting holes, side injecting holes and inclined injecting holes are formed in the plurality of inner fuel gas guns and the outer fuel gas guns. When in work, fuel gas is injected out in different directions by class through the front fuel gas injecting holes, the side injecting holes and the inclined injecting holes and is fully uniformly mixed with combustion supporting air to realize combustion, and thus the distribution uniformity and the fullness of flame can be improved; relatively-high-pressure high-temperature smoke produced by combusting close to the gun heads can flow back to a combustion supporting air area under the sucking effect of low-air-pressure combustion supporting air at the upstream and is mixed to obtain low-oxygen-contentcombustion supporting air, and the combustion supporting air is used in following uniformly-distributed flame combustion, and thus the inner smoke circulation with the same effect as an outer smoke circulating technology can be achieved on the premise that any smoke circulating facilities are not increased. The device is simple and reasonable in structure, is low in cost, and is innovation in thefield of low-NOx combustion devices.

The invention provides a sodium bicarbonate injection. The injection consists of sodium bicarbonate, a pH value regulating agent and injection water, wherein the pH value regulating agent comprises a sodium hydroxide solution and carbon dioxide gas. The preparation method comprises the following steps: injecting the injection water into a preparation tank, controlling the water temperature to be 20-35 DEG C, introducing CO2 gas until the solution is saturated; putting sodium bicarbonate, stirring to sufficiently dissolve the put sodium bicarbonate; regulating the pH value to be 7.40-8.5; keeping on injecting the injection water to the preparation tank to a standard proportion; stirring the liquid medicine for 10 minutes to enable the content of the liquid medicine to be uniform; sterilizing and filtering; filling. The sodium bicarbonate injection does not contain edetate disodium and sodium calcium edentate, so that blood calcium or bone calcium caused by addition of edetate disodium can be prevented; the pH value of the liquid medicine is controlled to be 7.4-8.50, so that the stability of the pH value of the liquid medicine in the sterilizing and storing processes can be guaranteed.