48results about How to "Avoid separation difficulties" patented technology

The invention provides a concrete releasing agent for an aluminum alloy template of a building. The releasing agent comprises the following components in parts by weight: 8-15 parts of grease, 1-3 parts of fatty acid monoglyceride or fatty acid diglyceride, 2-5 parts of fatty acid, 1-3 parts of resin, 0.05-0.5 parts of basic metal compound, 3-5 parts of inorganic filler and 1-5 parts of solvent. The releasing agent coats the aluminum alloy template of the building and is used in the concrete pouring technology, the concrete releasing quality is good without obvious blister, and the releasing agent residue surface matter is easily removed and the releasing agent is suitable for use for single or multiple times, and the service life of the template is prolonged.

This invention discloses a method for producing fatty acid methyl ester from high-acid-value grease by parallel methyl esterification. The method solves the problems of large raw material loss, low reaction efficiency, low apparatus utility and large wastewater discharge faced by present methods. The method comprises: (1) extracting high-acid-value grease with methanol; (2) performing parallel methyl esterification and interesterification reactions to obtain crude fatty acid methyl ester; (3) refining crude fatty acid methyl ester. A mixture of fatty acid methyl ester, fatty acid monoglyceride, and fatty acid diglyceride can be added during the interesterification reaction to prevent mass transfer hindrance. The method has such advantages as low raw material loss, high reaction efficiency, and high apparatus utility, and can be used to produce fatty acid methyl ester from restaurant waste oil, food processing waste oil and acidified oil from refinery plants.

The invention discloses an acid-alkali combination method for extraction of aluminum, potassium and gallium from alunite concentrate. The method comprises the following steps: uniformly mixing the alunite concentrate with a proper amount of concentrated sulfuric acid, curing, carrying out fast high-temperature reduction roasting to realize desulfuration; performing acid-making on sulfur-containing smoke to realize regeneration cycle utilization of sulfuric acid; carrying out water leaching on reduced calcine to extract potassium, carrying out alkaline leaching to produce aluminium oxide, and enriching and recycling gallium. According to the method, the advantages in a traditional alkaline method for extraction of aluminium oxide from alunite, and a concentrated sulfuric acid high-temperature reaction is effectively utilized to strengthen decomposition of alunite mineral, so that the recycling rate of aluminium oxide is improved, meanwhile the problem that acid produced in the alkaline method cannot be utilized is solved, and recycling of sulfuric acid is realized. The produced aluminium oxide product is good in quality, high in recycling rate, low in energy consumption, low in equipment corrosion, and easy in implementation of large-scale industrialization.

The invention relates to the field of intelligent visual recognition, in particular to an image change area detection threshold setting method and system and an electronic device thereof. The method comprises the steps of obtaining a first image before and after scene change and a second image corresponding to the first image, and performing fuzzification processing on the first image and the second image to obtain a processed first blurred image and a processed second blurred image; Calculating a difference value between corresponding pixel points of the first blurred image and the second blurred image to obtain a first difference image; And further optimizing the first difference image to obtain a second difference image, and processing the second difference image by using an Otsu algorithm to obtain a threshold value detected based on a change area between the first image and the second image. According to the method, the image change area can be accurately and efficiently detectedby obtaining the threshold value, environmental interference is prevented from influencing the image change detection precision, and the use requirements of the field of contemporary intelligent containers are met. The image change area detection threshold setting system and the electronic device thereof have the same beneficial effects as the method.

This invention has disclosed a kind of catalyzed synthesis method for acetyl tri-n-butyl citrate; its step is as follows: -Join tri-n-butyl citrate and acetic anhydride, catalyst in three-necked flask, which is in water bath, mix and react, gain acetyl tri-n-butyl citrate; -Recover catalyst from above-mentioned coarse product, distill acetic anhydride and acetic by pressure reduction, wash by deionized water and alkaline solution, then bath to water-phase to neutrality, distill water off by pressure reduction. This method is simple and the catalyst used is choiceness recyclable, and easy to gain. In agreeable condition, this method can make tri-n-butyl citrate complete liquefaction basically, have prevented tributyl citrate and acetyl tri-n-butyl citrate from separating problem, the purity of acetyl tri-n-butyl citrate is above 99% analysed by gas chromatography.

The invention provides a multi-stage reactive distillation synthesis technique and device of PODEn (polyoxymethylene dimethyl ethers). According to the technique, industrial methanol and a formaldehyde solution are taken as raw materials, a methylal reactive distillation column and a PODEn reactive distillation column are combined in one set of equipment, two reaction processes are combined by sufficient use of advantages of the reactive distillation columns and equipment coupling advantages, the reaction conversion rate and the target product yield are effectively increased, the circular stream flow is reduced, and the equipment efficiency is improved. According to the technique, the cost of used raw materials is low, the reaction process is controllable, the investment and the cost are low, no other substances are introduced, the process is environmentally friendly, and the technique has good application prospects.

The present invention relates to an organic electroluminescence material and its electroluminescence device. This invention adopts the introduction of group into 5-position of quinoline ring of aluminium 8-hydroxyquinolinate to design and synthesize the aluminium 8-hydroxyquinoliate derivative bioluminescence material which not only possesses good luminescence property and electronic transmissioncapacity, but also can be uniformly dissolved in organic polymer. According to luminescent colour it can be compounded and made into new luminescence material capable of giving various colour lights,including white light. This invented device is a single-layer compound functional film luminescent device.

The invention relates to the field of biomass pretreatment and provides a method for improving the enzymatic hydrolysis efficiency by adopting a hydrothermal-microwave approach combined with an ionicliquid for two-step pretreatment of a lignocellulose raw material. The method can effectively improve the enzymatic hydrolysis efficiency of the lignocellulose raw material. The pretreatment method aims to achieve the effects that the method is environmentally friendly, the material is recyclable and the energy consumption and the cost are low, and the use rate of the ionic liquid is increased. Byadopting the hydrothermal-microwave approach combined with the ionic liquid tetrabutylammonium hydroxide [TBA][OH] for carrying out pretreatment sequentially on the lignocellulose raw material, the lignocellulose raw material is effectively destructed, the wetting effect of tetrabutylammonium hydroxide [TBA][OH] on lignocellulose is enhanced, more tetrabutylammonium hydroxide [TBA][OH] enters thelignocellulose through destroyed gaps in the surface of the lignocellulose, structures of hemicellulose and lignin are broken, depolymerization among the hemicellulose, the lignin and cellulose occurs, and correspondingly the solubility degree of tetrabutylammonium hydroxide [TBA][OH] on the cellulose is increased.

The invention relates to an iron symbiotic non-ferrous metal copper-lead-zinc comprehensive recovery process. The process comprises the following steps of carrying out medium-weak activation and weak collection on copper-lead-zinc mixed flotation, strongly removing chemicals, separating low-concentration copper from lead and zinc, and separating lead and zinc minerals by using a small-stroke large-stroke-frequency micro-fine mud shaking table. By means of hydrophobicity of copper-lead-zinc minerals after iron separation, copper-lead-zinc weak activation and weak collection complete mixed separation is achieved, the agent cost is saved, and the problems that due to strong activation and strong collection of a traditional process, the technical index of copper and lead-zinc separation is poor, and concentrates are high in mutual content are solved; copper is separated from lead and zinc by adopting low-concentration strong reagent removal, and copper and lead and zinc minerals are separated by utilizing the natural floatability of copper minerals on the basis of cleaning and activation of dilute sulfuric acid and pyrosulphurous acid; and lead-zinc concentrate adopts the micro-fine mud shaking table, the separation process of micro-particle lead-zinc minerals is strengthened by small stroke, large stroke-frequency and no flushing water, single lead concentrate and zinc concentrate are obtained, and the problems that the single lead concentrate and zinc concentrate cannot be obtained through iron-symbiotic copper-lead-zinc separation, the separation efficiency is low, the concentrate mutual content is high, and the concentrate value is low are solved.

The invention discloses a glass feeding device capable of achieving automatic discharging. The glass feeding device comprises a turnover shaft. A set of turnover arms are evenly and fixedly connectedto the upper side of the turnover shaft. A square pipe is arranged on the upper side of each turnover arm. A set of first straight circular grooves are evenly arranged on the upper side of each squarepipe at intervals. An auxiliary suction cup is mounted on each fixed plate. Each glass suction cup is connected with a vacuum pump through an air pipe, a solenoid valve is mounted on each air pipe, and the solenoid valves are evenly fixed to the lower side of the turnover shaft. Mounting grooves are arranged on the upper sides of sliding shafts, a travel switch is arranged in each mounting groove, a first pressing plate is further arranged in each mounting groove, each first pressing plate is located above the corresponding travel switch, and a second spring is arranged between each first pressing plate and the corresponding travel switch. The glass feeding device has the advantages that whether discharging of the suction cups succeeds or not can be detected through the travel switches, safety accidents caused by suction cup discharging failures are effectively avoided, and the problem that suction cups and glass plates are hard to separate due to water spots is avoided.

The invention discloses a printing machine with a discharging and static electricity removing device. The printing machine comprises a printer; a discharging device is fixedly installed on one side ofthe printer, the top of the discharging device is fixedly connected with the bottom of a supporting column, the top of the supporting column is fixedly connected with the bottom of a static electricity removing device; the static electricity removing device comprises a box body, a containing cavity is formed in the box body, and a conductive plate is placed at the bottom of the inner wall of thecontaining cavity. According to the invention, a power supply device, an electrode plate and a needle-shaped electrode are matched; the power supply device provides power, therefore, current is generated on a motor plate; therefore, the needle-shaped electrode generates corona to generate electric ions, the electric ions can neutralize charges on the surface of a printing paper, so the static electricity on the surface of the paper is eliminated, and the effects that the static electricity on the surface of the paper is eliminated are realized, the problem that the paper is difficult to separate due to electrostatic bonding is solved, and the printing work is more convenient and faster.

The invention relates to a method for preparing pyrrolidone and derivatives thereof by a continuous tubular reactor. According to the method, a vertical winding tubular reactor is adopted, gamma-butyrolactone, ethanol amine and other organic amines are taken as raw materials, water is taken as a solvent, no catalyst participates, and the defects of complex technological process, low equipment utilization rate and difficulty in improving the production efficiency in an intermittent kettle reaction process are overcome. According to the method, automation and continuity of the production process can be achieved, meanwhile, the product selectivity is greatly improved, the technological operation is simple, and the process is convenient to regulate and control.

The invention belongs to the technical field of energy conservation and environmental protection of the coking industry, and specifically discloses a method for purifying and recycling coaling smoke dust of a coke oven. According to the method, the coaling smoke dust generated during coaling of the coke oven is sucked by a coke-side heat-resisting blower, cooled by a water-sealed valve and then allowed to enter a coaling dust combustion chamber to have mixed oxygen burned out, then a coaling dust collecting head tube is introduced into a combustion chamber of the coke oven to supply supplementary fuel for coke oven heating, and accordingly coaling dust is recycled, dust capacity of a crude gas system of the coke oven is decreased, and quality of tar is improved. Additionally, the method for purifying and recycling the coaling smoke dust of the coke oven has the advantages that crude gas diffusion under emergency conditions is eliminated substantially, quality of crude gas under diffusing conditions is improved, and atmosphere quality around the coke oven is improved.

The invention provides a waste wool processing and recycling device for garment production, and relates to the technical field of garment production. The problems that in the waste wool processing and recycling process, waste wool and high-quality wool cannot be distinguished and the recycling success ratio is low due to the fact that the waste wool and the high-quality wool are liable to be wound together in the cleaning process in the recycling process, and in addition, impurities contained in the waste wool are carried together due to mechanical stirring inclination can be solved. The waste wool processing and recycling device comprises a wool inlet box, the wool inlet box is of a T-shaped structure, and the rear end of the wool inlet box is transversely in butt joint with a flow dividing box. A retaining wall is fixedly mounted at the rear end of the flow dividing box in a transverse, vertical and upward manner; and the left end and the right end of the flow dividing box are fixedly connected with cleaning boxes in a butt joint mode. A wool inlet tongue plate is rotationally mounted at the position, corresponding to the wool inlet box, of the edge of the front end of the flow dividing box. A bent spring is arranged on a guide inner rod in a sleeving mode, the poking action is generated through the guide inner rod and the bent spring, the poking bionic action can be formed, and wool clustering and separation difficulty caused by wool clustering are avoided.

The invention discloses a method for detecting gas forming microorganisms contaminated in milk. The method comprises the following steps: (1) inoculating various gas forming microorganisms into suitable media for cultivating, and recording various gas forming conditions of the gas forming microorganisms at different times; (2) separately adding milk samples to be tested into test tubes containingvarious culture medium, the culture medium are culture medium before the inoculation in the step (1), and observing the gas forming conditions in the test tubes containing the various media, wherein according to the gas forming conditions of the various gas forming microorganisms recorded in the step (1) at different times, the types of the gas forming microorganisms in the milk samples to be tested can be determined. The method has the advantages that the types of gas forming microorganisms in milk samples to be tested can be judged within 48 hours and counted, so as to quickly check the sources and the causes of pollution, determine microorganisms causing swelling, and take effective measures in time to control and reduce loss.