39results about How to "Fewer filtering steps" patented technology

The invention discloses a method for producing 1,6-dimethyl adipate. The method comprises the following steps of: (1) mixing adipic acid and methanol without adding a catalyst, and performing pre-esterification reaction at the temperature of 80 and 200 DEG C under the gage pressure of between 0.05 and 3 MPa; and (2) conveying materials which are subjected to the pre-esterification reaction to the upper part of a continuous catalytic rectifying tower, and gasifying the dried methanol, conveying to the lower part of the catalytic rectifying tower, allowing the materials which are subjected to the pre-esterification reaction to contact methanol steam in a reverse flow mode in the catalytic rectifying tower and performing esterification reaction further. By the method, the problems of equipment corrosion and pollution which are caused by the utilization of a sulfuric acid catalyst in the conventional process are solved, and the defects of complex processes, large consumption level of the catalyst and the like which are caused by the adoption of two-step or multi-step catalytic esterification are overcome.

The invention provides a synthesis method of betaine and betaine hydrochloride salt, comprising the steps as follows: strong alkali negative ion resin is selected as a carrier and is treated into a hydroxide radical type; elution is carried out by using a chloroactic acid solution; cycle elution is carried out using a trimethylamine solution; scrubbing is carried out by using distilled water, and cleaning solution is combined with cycle eluent, then vacuum distillation is carried out so as to achieve vicidity, and the vacuum distillation is continued until powder or small flake white betaine with water is obtained; the betaine with water is dissolved using absolute ethyl alcohol and is carried out vacuum distillation to obtain betaine anhydrous, with yield of more than 93 percent and purity of more than 98.5 percent; the sticky matter after the vacuum distillation is added with hydrochloric acid and stirred then subjected to the vacuum distillation so as to obtain the powder or small flake white betaine hydrochloride salt, with yield of more than 94 percent and purity of more than 98 percent. The method of the invention has advantages of simple and convenient technique, low production cost, moderate operation condition and environmental-friendliness; the products of the invention are applicable to the application in such fields as feedstuff, food, cosmetics, medicine, biological agent, and chemical industry, etc.

The invention discloses a preparing method of protoplast of edible mushrooms and the protoplast, and relates to the technical field of preparation of engineering cells of filamentous fungi. The preparing method of the protoplast of the edible mushrooms comprises the steps of inoculating edible mushroom strains into a container containing a solid culture medium to be subjected to mycelium culture so that bacterial colonies in which hyphal is grown can be obtained; conducting cell wall enzymolysis on the bacterial colonies to obtain a protoplast coarse solution; filtering, centrifugating and re-suspending the protoplast coarse solution to obtain a protoplast solution. According to the preparing method, a large amount of protoplast can be quickly obtained. Compared with a conventional method, the preparing method of the protoplast of the edible mushrooms is greatly improved in the aspect of speeds, simple in step, and more convenient to operate.

The invention provides an iron-based catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: 1) enabling iron-containing soluble salt solution to be mixed with alkaline aqueous solution and reacting, to obtain a slurry-state head product; 2) in an aerobic atmosphere, enabling the head product to be loaded on a solid carrier in a spraymode, performing crystal phase transition, to obtain a secondary product loaded with FeOOH on the surface of the solid carrier; and 3) in a nitrogen atmosphere, drying the secondary product, to obtain the iron-based catalyst. The provided preparation method for the iron-based catalyst is short in technological process, low in production cost, low in water consumption, and wastewater-free. The catalyst prepared by the preparation method is high in direct coal liquefaction catalytic activity.

The invention provides a method for preparing mono-methyl succinate. The method comprises the following steps: carrying out a mono-esterification reaction on succinic anhydride and methanol in a static mixer, conveying the reaction effluent into a high gravity reactor, and meanwhile filling water vapor into the high gravity reactor; cooling and separating the liquid material after the reaction to obtain mono-methyl succinate. The method for preparing mono-methyl succinate provided by the invention is reasonable in craft process, simple in separation method, high in product purity, good in quality and high in yield.

The invention discloses a process for preparing fructose syrup from rice, and relates to the technical field of biological enzymolysis. The process comprises the following steps: (1) water washing, and soaking; (2) pulp grinding, and pulp adjusting; (3) liquefaction; (4) saccharification; (5) press filtration and slag removal; (6) decolorization and desalination; (7) isomerization; (8) secondary press filtration and slag removal; and (9) secondary decolorization and desalination. Rice is transformed to the fructose syrup through the process steps, and the prepared fructose syrup has good colorvalue and good taste, and improves the economic value of rice; at the same time, the processing steps are simple and feasible to implement, the processing period is short, the process repeatability is good, the controllability is strong, and the quality stability of the prepared fructose syrup is ensured.

The invention relates to a method for synthesizing a persantine intermediate 2,4,6,8-tetrahydroxy pyrimido[5,4-d] pyrimidine, comprising the following steps of: (1) adding nitro orotic acid in an alkali liquid, then hydrogenating with Ni / H2, and filtering to obtain an amino orotic acid solution which is directly used for next reaction without separation; (2) adjusting pH of the amino orotic acid solution with concentrated hydrochloric acid to 3, adding sodium cyanate for temperature control reaction to obtain the urea derivatives of the amino orotic acid; then dropping a 30% sodium hydroxide solution to adjust pH to 13, heating for cyclization, dropping a 50-60% sulfuric acid solution to adjust pH to 3; (3) cooling to room temperature, filtering, washing to neutrality and drying to obtain the product. The intermediate of step (1) is not needed to separate, thereby saving a lot of time and labor, reducing about 50% of total reaction time with mild reaction condition and maximum reaction temperature reduced to 95 DEG C so that the device is less required and more durable.

The invention discloses a graphene silkworm excrement microporous carbon core-shell composite material as well as a preparation and an application thereof. Silkworm excrement and water are mixed and swelled, freeze drying is carried out, and after freeze-drying, the silkworm excrement is prepared into carbonized silkworm excrement with shielding gas; the carbonized silkworm excrement and KOH are mixed, activation and hole enlarging reaction is carried out with shielding gas, an oxidized graphene solution and a silkworm excrement based microporous carbon material are mixed, and centrifugation and drying are carried out in order to obtain an oxidized graphene silkworm excrement microporous carbon core-shell composite material; the material is placed in a plasma reactor, H2 atmosphere is introduced, and the graphene silkworm excrement microporous carbon core-shell composite material is prepared. The material can be applied to the aspect of sustained and controlled release of pesticide. The material has a high specific surface area and a core-shell structure covered by graphene, and has high adsorption capacity and good sustained and controlled release effects for pesticide.

The invention provides a medicated wine which comprises codonopsis pilosula, poria cocos, corn cervi pantotrichum, lucid ganoderma, gastrodia elata, trillium tschnoskii maxim, whorlleaf stonecrop herb, eucommia ulmoides, sealwort, wolfberries, angelica sinensis, radix polygoni multiflori, safflower carthamus, liquorice, rock sugar and a corn wine. The brewing process includes: crushing the raw materials into powder and respectively making into two filter paper bags according to adding percent, wherein the first filter paper bag contains codonopsis pilosula, poria cocos, cornu cervi pantotrichum, lucid ganoderma, eucommia ulmoides, sealwort, wolfberries, angelica sinensis, radix polygoni multiflori and liquorice while the second filter paper bag contains gastrodia elata, trillium tschnoskii maxim, whorlleaf stonecrop herb and safflower carthamus; after irradiation sterilization, immersing the first filter paper bag into the first share of the corn wine for sealing, uncovering after 15 days and adding into the second filter paper bag for sealing, taking out the two filter paper bags after 7 days and adding into the second share of the corn wine for sealing and soaking for 7 days, and finally mixing the two shares of the medicated wine and adding with the rock sugar. The medicated wine is capable of tonifying qi and beautifying skin, promoting blood circulation to remove blood stasis, invigorating the kidney and strengthening Yang and prolonging life, effective composition of medicine is fully extracted, waste is avoided, and production process is simplified.

The invention relates to a kitchen waste water centrifugal separation device, and the device comprises a centrifugal cylinder; an oil outlet and a water outlet are formed in the centrifugal cylinder,an emulsifying cylinder is arranged in the centrifugal cylinder, the emulsifying cylinder is arranged in the center of the centrifugal cylinder, an emulsifying stirring mechanism is arranged in the emulsifying cylinder, a liquid inlet is formed in the upper end of the emulsifying cylinder, and a liquid outlet is formed in the lower end of the emulsifying cylinder; the bottom of the emulsifying cylinder is provided with a discharge port for discharging emulsified liquid into the centrifugal cylinder, and a centrifugal stirring mechanism is arranged in the centrifugal cylinder. Kitchen waste water firstly passes through the emulsifying and stirring mechanism in the emulsifying cylinder, food residues in the waste water are crushed, the food residues, grease and water are fully mixed to formemulsified liquid and turbid liquid, and the mixed liquid enters the centrifugal cylinder to be centrifugally layered through the centrifugal effect. According to the method, the step of filtering food residues is omitted, the treatment efficiency of the kitchen waste water is improved, and the separation effect is good.

The invention discloses a production process of vodka brewed by sweet potatoes. The production process of the vodka includes the steps: screening; cleaning; cutting; drying; grinding; saccharifying; enzymolysis; PH (potential of hydrogen) value and sugar degree adjustment; temperature control fermentation; distillation; filtration; blending; matching and the like. The prepared sweet potato vodka is high in quality and fresh and cool in taste, the production process adapts to fermentation production of mass production lines, stable quality of the vodka is ensured, and economic values of the vodka are greatly improved.

In order to solve the problem that the production cost is increased due to multi-step operation of desulfurization and dust removal in the prior art, the invention provides a dust removal and desulfurization integrated silicon nitride porous ceramic and a preparation method thereof. A desulfurization catalyst is loaded on the surface of porous ceramic in a dipping or spraying mode; the reaction raw materials comprise, by mass, 100 parts of rice husks, 10-20 parts of silicon nitride, 14-20 parts of a sintering aid, 1-10 parts of a pore forming agent and 6-10 parts of low-temperature molten glass powder; wherein the rice husks are soaked in diluted hydrochloric acid with the volume fraction of 8-12% for 20-50 days, and are boiled in diluted hydrochloric acid with the volume fraction of 8-12% for 10-30 minutes, then are cooled to room temperature and boiled again, and the steps are repeated for 3-5 times and finally the rice husks are dried.

The invention provides an impurity removing and purifying method of sintering machine head dust lixivium. The impurity removing and purifying method comprises the following steps of (1) performing water immersion on sintering machine head dust, and then performing solid-liquid separation to obtain the lixivium; (2) adding a heavy metal impurity removing agent to the lixivium obtained in the step (1), performing stirring, then adding a Ca2+ impurity removing agent, performing stirring, then adding a SO<4> 2- impurity removing agnet, and performing stirring; and (3), performing filtering separation. Compared with the prior art, the impurity removing and purifying method disclosed by the invention adopts a chemical impurity removing method to remove impurity ions in the sintering dust lixivium; the addition quantity and the adding order of raw materials are designed, and heavy metal, Ca 2+ and SO4 2- can be removed simultaneously only through one-time filtration, so that a few filtering steps are used, the method is simple and high-efficient, and secondary pollution can also not be generated; besides, in the application, the raw materials can be directly used after being purchased, and the situation of compounding the raw materials into a solution and the like is not needed, so that the impurity removing and purifying method is convenient and quick; and besides, the impurity removing effect is good; the lixivium after impurity removing excludes impurity ions; and after crystaling, the obtained potassium chloride product is high in purity.

The invention relates to the technical field of preparation technology of a Kechuanling oral solution, in particular to a preparation process of a concentrated type Xiao er Kechuanling oral solution with innovative specifications. The preparation process is simple, and a special flocculant is used to precipitate the solution, thereby eliminating a subsequent filtration step, saving production cost, improving the quality of the oral solution, and avoiding great loss of active ingredients.

The invention discloses a cell preparation for removing wrinkles and a preparation method thereof. The specific method comprises the following steps: S1, preparing stem cells; S2, preparing skin fibroblasts; and S3, mixing the stem cells with the skin fibroblasts, and preparing an injection with a phenol-red-free DMEM culture medium for facial wrinkle removal. The stem cell preparation method comprises the following steps: S11, cleaning a placenta obtained during delivery, and shearing decidua basalis part tissues of a maternal-fetal interface; S12, cleanly rinsing the tissue sheared in the step S11 with physiological saline containing antibiotics, then cutting the tissue into pieces, and adding 10mL of D-Hank's liquid with 0.1% of pancreatin concentration for digestion; S13, stopping digestion of the digestion mixed solution in S12; and S14, centrifuging the mixed solution after the digestion is terminated, discarding the supernate, conducting culturing in an incubator, and cryopreserving the cultured stem cells. The stem cells are compatible with skin fibroblasts, can be used for eliminating wrinkles and filling depressions on the epidermis of the human body, and are obvious, natural and lasting in effect and free of serious side effects.

The invention discloses a preparation method of autologous skin fibroblasts. The preparation method comprises the following steps: S1, cutting a piece of human autologous cheek or retroauricular skin tissue, completely soaking the tissue in a tissue treatment solution for 10-20 min in a sterile environment, removing adipose tissue and connective tissue from the soaked tissue, and cutting the residual tissue into pieces in a sterile culture dish; S2, adding the cut tissue into a mixed enzyme digestive juice preheated at 37 DEG C for digestion, and adding a digestion termination juice after digestion is ended to terminate digestion; S3, merging the obtained tissue fluid into a centrifugal tube, centrifuging, removing supernatant, and adding a cell culture fluid into the cell precipitate to obtain P0 fibroblasts; and S4, inoculating the P0-generation cells into a culture bottle, collecting the cells after culture is finished to obtain P1-generation fibroblasts, sampling, and counting the number and motility rate of the cells. The mixed digestive juice of multiple enzymes is adopted, digestion can be directly carried out, the operation process is simple, and consumed time is short.

The invention relates to a method for synthesizing a persantine intermediate 2,4,6,8-tetrahydroxy pyrimido[5,4-d] pyrimidine, comprising the following steps of: (1) adding nitro orotic acid in an alkali liquid, then hydrogenating with Ni / H2, and filtering to obtain an amino orotic acid solution which is directly used for next reaction without separation; (2) adjusting pH of the amino orotic acid solution with concentrated hydrochloric acid to 3, adding sodium cyanate for temperature control reaction to obtain the urea derivatives of the amino orotic acid; then dropping a 30% sodium hydroxide solution to adjust pH to 13, heating for cyclization, dropping a 50-60% sulfuric acid solution to adjust pH to 3; (3) cooling to room temperature, filtering, washing to neutrality and drying to obtainthe product. The intermediate of step (1) is not needed to separate, thereby saving a lot of time and labor, reducing about 50% of total reaction time with mild reaction condition and maximum reaction temperature reduced to 95 DEG C so that the device is less required and more durable.

The invention discloses a kitchen waste decomposition method. The method comprises the following steps of: 1, preparation of a microbial inoculum: selecting a single microbial inoculum or a complex microbial inoculum of aspergillus niger, trichoderma harzianum, saccharomycetes, bacillus subtilis, bacillus licheniformis and nitrifying bacteria with high activity of nitrifying enzyme, protease and cellulase as a fermentation microbial inoculum; 2, microbial inoculum activation: fully mixing flour and water according to a mass ratio of 1: (10-12), heating, gelatinizing, cooling to room temperature, adding the fermentation microbial inoculum accounting for 1%-2% of the mass of the paste, and activating at room temperature for 2-5 hours; 3, fermentation: mixing the kitchen waste with a proper amount of activating microbial inoculum, and then adding the mixture into a fermentation vat for fermentation; 4, collection and utilization of fermentation liquor: using the fermentation liquor as a foliar fertilizer or a water-soluble fertilizer of flowers and plants; and 5, residue treatment and utilization: mixing residues and a proper amount of soil and using the mixture as a flower and plant substrate. According to the method, the kitchen waste generated at home is treated, and the pollution caused by the kitchen waste to the environment can be solved from the source.

The invention discloses an inorganic coating fine production system which comprises a machine shell, the machine shell is fixedly connected with a fixing frame, the fixing frame is fixedly connected with a hydraulic rod, the hydraulic rod is fixedly connected with a smashing box, a rotating cavity is formed in the smashing box, a moving cavity is formed in the smashing box, and a connecting mechanism, a grinding mechanism and a sealing mechanism are arranged in the machine shell. Various raw materials can be ground and mixed again through the grinding mechanism, and the ground coating can be sealed and stored through the sealing mechanism; a connecting mechanism can stir and preliminarily smash raw materials, a grinding rod is arranged, a solution can be ground more finely, the raw materials can be quickly and efficiently ground when the grinding rod is used for grinding, the filtering step after the raw materials are ground is reduced, contact with outside air can be reduced, and environmental pollution and material loss are reduced; the cleaning is convenient.

The invention discloses a device and a method for ion-induced regulation and control of industrial circulating water treatment, and relates to the technical field of water treatment, a dosing system is connected with a medicament distributor at the lower part of an ion-induced regulation and control reactor through a pipeline, and a raw water tank is connected with a water distributor at the lowerpart of the ion-induced regulation and control reactor through a pipeline; a water outlet is formed in the upper part of the ion-induced regulation reactor, an exhaust port is formed in the top of the ion-induced regulation reactor and used for exhausting residual CO2 gas, and a crystallization outlet is formed in the bottom of the ion-induced regulation reactor. The method and device have the beneficial effects that metal ions in water are enriched to the surface of the catalyst through the ion-induced catalyst to generate water-insoluble precipitates which are attached to inner holes and the surface of the catalyst and continuously grow to form spherical particles to be discharged out of a system, so that the metal ions in the water are removed, circulating water is purified, the evaporation rate of the circulating water is improved, and scaling and corrosion damage of harmful ions in the water to a circulating system are reduced.

The invention provides a brexpiprazole hydrochloride crystal form S and a preparation method thereof. The dosage of the mixed solvent of glacial acetic acid and ethanol relative to the brexpiprazole crude product is controlled, and the brexpiprazole crude product can be dissolved at normal temperature, thereby avoiding the potential safety hazard and health risk caused by dropwise adding acetic acid at high temperature. The novel brexpiprazole hydrochloride crystal form S with the particle size obviously larger than that of an existing crystal form is obtained by controlling the crystallization temperature, the filtering time can be shortened by 44%-60%, and the brexpiprazole hydrochloride crystal form S is very beneficial for reducing the time cost and improving the production efficiencyand is suitable for industrial production.

The invention discloses a method for preparing a farmland chemical fertilizer sustained-release agent and a potash fertilizer by using biomass incineration ash, wherein the method comprises the following steps: 1, taking a certain amount of biomass ash, placing on an ash frame, then smoothly putting into a reaction kettle, injecting a nitric acid solution with the mass ratio of 25-40%, closing with a cover of a reaction kettle, and checking sealing; 2, starting up a stirrer of the reaction kettle; heating the reaction kettle; keeping stirring for 10-12 min at the temperature of 180-220 DEG C and the pressure of 1.5-1.6 MPa; 3, opening a discharge valve at the bottom of the reaction kettle, and allowing a high-temperature solution to enter a cooling pond, wherein a cooling liquid is a KNO3 saturated solution at room temperature; and after the cooling liquid is cooled, collecting a precipitated KNO3 coarse crystal salt; 4, removing the ash frame of the reaction kettle, collecting a residual solid ash matter, and adding lime to adjust the pH to 6-8, to obtain the farmland sustained-release agent; and 5, extracting a supernatant of the cooling pond to prepare a nitric acid solution, restarting the step 1, and carrying out circulating production. The method can realize efficient rapid extraction of the potassium element in the biomass ash to prepare the binary compound fertilizer and preparation of the good chemical fertilizer sustained-release agent.

The invention provides a method for preparing mono-methyl succinate. The method comprises the following steps: carrying out a mono-esterification reaction on succinic anhydride and methanol in a static mixer, conveying the reaction effluent into a high gravity reactor, and meanwhile filling water vapor into the high gravity reactor; cooling and separating the liquid material after the reaction to obtain mono-methyl succinate. The method for preparing mono-methyl succinate provided by the invention is reasonable in craft process, simple in separation method, high in product purity, good in quality and high in yield.

The application discloses a kit for detecting immunoglobulin G in urine, which belongs to the technical field of medical in vitro diagnosis. The kit includes reagent R1 and reagent R2; the reagent R1 includes the following components: Tris base, polyethylene glycol, polyvinylpyrrolidone, sodium chloride, surfactant S9, EDTA-Na 2 and sodium benzoate; the reagent R2 includes the following components: tris base, goat anti-human immunoglobulin G polyclonal antibody, animal serum, sodium benzoate, trehalose, EDTA-Na 2 and Twain. The kit of this application has high sensitivity, wide linear range and good repeatability, and can accurately detect low-value samples; at the same time, the kit of this application also has good stability, and the reagents can be stably stored in 14 samples It eliminates the filtration step before the reagent is used, which simplifies the operation steps and improves the accuracy of the test results.

The invention discloses an image processing method and device, and the method comprises the steps: obtaining the first pixel point information of a to-be-matched first target object in a first image,and obtaining the second pixel point information of a to-be-matched second target object in a second image; determining a first characteristic value of the first target object based on the parameter information of two camera devices and the first pixel point information; determining a second characteristic value of the second target object based on the parameter information of the two camera devices and the second pixel point information; and if the first characteristic value is matched with the second characteristic value, determining that the first target object and the second target objectare the same target object. The characteristic value of the target object is determined through the relatively stable pixel point information and the parameter information of the corresponding cameradevices without being affected by external use conditions, and compared with the prior art, the characteristic value is used for matching the target object, so that the matching result is more stable,and the accuracy is higher.