13 results about "Separation method" patented technology

The invention relates to a method to separate temperate coal race component based on the extract and the stripping, which belongs to the separating method of the coal race component. Join the component solvent into the coal sample, agitate it and obtain the extract liquid-solid mixture; Carries on the liquid-solid separation to the extract liquid-solid mixture, obtains the extracted liquid and the gathering excess separately; To gathers the excess water used wash, then the vacuum drying, obtains gathers -odd coal; Joins the stripping medicinal preparation in the extracted liquid, the agitation, obtains the stripping liquid-solid mixture and carries on the liquid-solid separation to it, obtains the solid matter and the wet goods; To solid matter water used wash, dry, obtains the refined coal; The wet goods are two laminations: To a lamination takes off resolve A with the atmospheric pressure distillation, carries on the stripping again to the surplus solution, will produce sticks the thick shape solid, carries on the drying process to it, obtains the caking component; Another lamination is mainly resolved B and the stripping medicinal preparation omnium-gatherum. We bench work skill process is simple, the extract and the stripping process is temperate, the resolved recycle, the reaction process is advantageous for the control, can cause the coal petroleum to separate Cheng Cuiyu the coal, the refined coal, the caking group to classify many kinds of unique race components equally in advance likely.

The invention discloses a method for separating low-carbon olefin gas. The method is used for overcoming the disadvantages in existing low-carbon olefin separation methods that cryogenic separation is complicated in process flow, large in investment and the like. The method comprises the following steps: the low-carbon olefin gas enters a deethanization tower after the low-carbon olefin gas is compressed and dried, a tower bottom material flow of the deethanization tower is conveyed to a depropanization and propylene distillation system so as to separate polymer-grade propylene products, and a tower top material flow of the deethanization tower enters a demethanization tower; and a tower bottom material flow of the demethanization tower is conveyed to an acetylene converter and an ethylene distillation tower, a tower top material flow of the demethanization tower is conveyed to an absorption tower and is in contact with an absorbent, a tower top gaseous-phase material flow of the absorption tower is output or enters a fuel gas system, and a tower bottom material flow of the absorption tower is conveyed to the deethanization tower. The method disclosed by the invention has the advantage that the cryogenic separation is simple in process flow and small in investment and can be used for producing target products, such as polymer-grade ethylene, polymer-grade propylene and the like.

The invention discloses a separation method used for preparing isopropanol via hydrogenation of acetone. According to the separation method, an acetone hydrogenation product is subjected to azeotropic distillation and extractive distillation so as to obtain high-purity isopropanol. The separation method comprises following steps: (1) the acetone hydrogenation product is delivered into a rectifying tower for azeotropic distillation, an azeotrope is collected from the top of the rectifying tower, a heavier component is collected from a tower kettle of the rectifying tower, and an isopropanol product is collected from side lines of a tower body of the rectifying tower; (2) the azeotrope collected from the top of the rectifying tower is delivered into a recovery tower, and is subjected to extractive distillation using an extraction agent, a material flow containing acetone and isopropanol is collected from the top of the recovery tower, and is delivered back to a reactor for recycling, and an aqueous solution rich in the extraction agent is collected from a tower kettle of the recovery tower; and (3) the aqueous solution rich in the extraction agent is delivered into a dehydrating tower, and the extraction is collected from a tower kettle of the dehydrating tower, and is delivered back to the recovery tower. According to the separation method, azeotropic distillation and extractive distillation are adopted, high-purity isopropanol is prepared, raw material consumption is less, extraction agent loss is low, technical processes are simple, and operation is convenient.

The invention relates to a squirrel cage rotor. A squirrel cage rotor centrifugal casting die comprises an upper die, a lower die, a plurality of material returning ejector rods which move downward when the lower die descends, and a material returning ejector rod resetting structure; the upper die is provided with a rotor upper end annular cavity; the material returning ejector rods penetrate through the top wall of the rotor upper end annular cavity and are distributed on the circumferential direction of the rotor upper end annular cavity; and the material retuning ejector rods are parallel to the axis of the upper end annular cavity. The sequence of separating the rotor from the die can be controlled, and small force is applied to the rotor to ensure that the rotor is separated from the die, so that the problems that the automatic production of the rotor is restricted due to the uncontrollable sequence of separating the rotor from the die, and production equipment and the tor are damaged because the rotor falls off in the midway in the material returning process of die centrifugal casting, and the problems of stability of the rotor is reduced during rotation due to deformation of a rotor iron core in the conventional separation method can be solved.

The invention discloses a preparation method of graphene quantum dots. The method comprises the following steps: a. adding pyrene into concentrated nitric acid, carrying out a condensation reflux reaction at 80 DEG C for 24-48 h, adding excess deionized water after the reaction is completed and performing suction filtration by using a filter membrane, performing repeated suction filtration and washing until the pH of a solution is neutral, and then placing the reaction product in a vacuum oven for oven-drying at 65 DEG C-85 DEG C to obtain trinitropyrene; b. weighing trinitropyrene and sodiumsulfite and performing dissolving in ethanol and performing uniform stirring, transferring the solution into a reaction kettle with a polytetrafluoroethylene substrate, and carrying out a reaction ata high temperature of 180 DEG C-210 DEG C for 10 h-12 h; and c. filtering the reaction product through a 0.22 [mu]m filter membrane to remove unreacted particles after the high temperature reaction iscompleted, then performing purification by a column chromatography separation method, and performing drying to obtain a yellow-brown solid powder, namely the graphene quantum dots. The hydrophobic graphene quantum dots prepared by the method can detect water content in organic solvents according to changes of fluorescence, and carry out cell imaging.

The invention discloses a rectangular plate vibration mode calculation method based on the spectrum finite element. The method comprises the following steps that a plate vibration boundary value problem module is obtained on the basis of the energy function variation principle, and free vibration equations of two directions are obtained on the basis of the variable separation method; the boundary conditions of the two directions of the rectangular plate are determined, the vibration frequencies and the vibration modes are calculated by mutual iteration of different directions under the preset modal order, and the calculation is stopped until the error of the vibration frequencies, obtained by calculation, of the two directions is in a certain designated range; the finally obtained vibration modes of the two directions are used for overlaying to obtain the rectangular plate vibration mode. Calculation of the plate vibration modes is performed aiming at various combined boundary conditions, the influences of the rotation corners of any position of the two directions in the plate on the calculation effect of the plate vibration modes is considered, the vibration equation with the amplitude and the two rotation corners taken as the variables is obtained, the calculated result is more accurate, and the calculation method has the advantages that the practicability is wide and the application is convenient.

A method and apparatus is provided for separating two or more annular members such as bead assemblies or bead and apex assemblies. First, a flexible member is inserted into the annulus of the annular members. Next, the flexible member is inflated until the outer surface of the flexible member contacts the inner diameter of the annular member. Then the flexible member is axially expanded until the annular members are separated. Then the flexible member is deflated so that the annular members can be removed.

The invention relates to an extraction and separation method of a trace uranium element in a liquid sample and belongs to the technical field of trace analysis sample pretreatment. The method primarily utilizes a mixture of di-iso-amyl pentylphosphonate and trioctylphosphine oxide as an extraction agent, strictly controls a concentration of a nitric acid leaching solution, allows the uranium element to have a higher distribution coefficient and better adsorptive capacity, and therefore, achieves a better extraction and separation effect; and an ammonium carbonate solution with a specific concentration is used as an eluent to allow the uranium element to have a higher recovery rate. The extraction and separation method can achieve concentration of the trace uranium element in the liquid sample simply, conveniently and rapidly and separation of some interference heavy metal ions at the same time, and improves stability and reliability of a determination result of the trace uranium element in the liquid sample.

The invention discloses a solar photovoltaic refrigeration assisted hydrate method carbon capture system. A solar power generation device is connected with a thermoelectricity refrigeration device and an inverter, and the other end of the inverter is connected with an absorption-type refrigerating machine and various levels of compressors; after exchanging heat with the thermoelectricity refrigeration device and the adsorption-type refrigerating machine, a refrigerating medium exchanges heat with various levels of coolers and various levels of reaction kettles; and mixed gas such as industrial smoke CO2, N2 and the like successively passes through the absorption-type refrigerating machine, a primary hydrate method carbon capture system and a secondary hydrate method carbon capture system. By utilizing the solar photovoltaic refrigeration assisted hydrate method carbon capture system, the gradient utilization of energy is realized, the solar power generation is used for providing power to the thermoelectricity refrigerating device, the absorption-type refrigerating machine and various levels of compressors, so as to provide a low-temperature high-pressure environment for generating a hydrate; and by adopting the hydrate two-level separation method, CO2 is captured, the process flow is simple, raw materials are cheap, and the separation efficiency is improved; and the solar power generation system, the thermoelectricity refrigerating system and the hydrate method CO2 capture system are used for separating the industrial gas, so that the pollution to the environment is small, and the energy utilization efficiency is high.

The invention discloses a slag-iron separation method in an initial stage of reblowing after long-time damping down of a large blast furnace, and belongs to the technical field of molten iron smelting. The method comprises the following steps: (S101) a substrate is provided with an anchorage piece; then, a board refractory is poured; the thickness of the board refractory is larger than the heightof the anchorage piece; and a baffle plate is formed and dried for future use; (S102) a distance small pit is selected to enter the upstream; the baffle plate is aslant inserted in a main ditch; the board refractory faces an iron notch; and a gap between the baffle plate and the side of the main ditch is fully filled and compacted by yellow sand; (S103) the iron notch is opened; and when more slagor weak fluidity of the molten iron is generated during tapping, the baffle plate is not shifted, and slag and iron are discharged into a dry slag pit through a slag groove; and (S104) when the fluidity of the molten iron is normal, the baffle plate is pulled away, and the molten iron passes through a slag remover to enter a tank. The iron slag with weaker fluidity in the initial stage of reblowing after long-time damping down of the large blast furnace can be safely discharged, so that the heat consumption in the furnace is reduced, the recovery progress of the blast furnace is accelerated,the next discharge of the molten iron is fully prepared, and the smooth recovery progress of the blast furnace is guaranteed.

The invention relates to a separation method for high-quality cashew proteins. The separation method comprises the following steps: (1) crushing and sieving cashew kernels, performing microwave treatment, and separating cashew oil by using a hydraulic cold-pressing method; (2) adding cashew meal in pure water, performing refining through a a colloid mill, and performing homogenizing treatment; (3) performing alkaline conditioning and dynamic ultra-high pressure treatment, performing centrifugation, extracting supernatant, regulating the pH to an isoelectric point, performing centrifugation, and washing precipitates with warm water; (4) performing homogenizing and spray-drying on the precipitates to obtain the high-quality cashew proteins. According to the separation method, process links are continuous and compact, the industrial production is easy, and products are high in yield and quality.