104results about How to "Uniform extraction" patented technology

The invention discloses a method for extracting gas from high gas low permeability coal seam by punching, slotting, pressure releasing and permeability increasing, comprising the following steps: whena drill is drilled into a predetermined position of the coal seam, coal bodies at both sides of a drill hole are cut in the drill hole by high pressure water jet with a certain pressure and flow; a flat slot is formed at both sides of the drill hole; the cut coal bodies is led out the hole by the high pressure water jet. The exposed area of the coal body at the slotted part in the drill hole aregreatly increased, namely that an extremely thin protective layer is exploited with local scope of the flat slot, which enlarges effective influential range of pressure releasing, permeability increasing and gas discharging of the coal bodies in the drill hole, thus the air permeability of the coal bodies is increased about 200-300 times, the average amount of single-hole gas extraction reaches 0.3m<3>/min, the concentration of the gas extraction is 30-60%, gas drainage rate of working face of coal extraction is more than 50%, the number of drill holes for gas drainage is reduced by 10-20% after slotting, pressure releasing and permeability increasing. The method realizes the safety, high efficiency and uniform extraction of the gas from the high gas low permeability outburst coal seam, and changes high gas coal seam with outburst danger into low gas coal seam without outburst danger.

A method for increasing the permeability of an inert gas and extracting gas under the coupling action between temperature and pressure, belongs to a method for extracting the gas. A permeability increasing hole is formed in the middle of a workface coal bed; gas extraction holes are formed on vertexes of an equilateral triangle with the permeability increasing hole as a center; after the gas extraction holes are sealed, the gas is extracted; the inert gas under the coupling action between temperature and pressure is injected into the permeability increasing hole one by one; under the coupling action of temperature and pressure of the nitrogen, a small-size clearance of a coal body is pressed by the inert gas to be opened, so that an original crack in the coal body is stretched, the stretched crack further extends and no protrusion by induction occurs; 90 percent of adsorption gas in the coal body absorbs energy and the separating speed of the gas from the coal body is increased, so that gas which is difficult to desorb in the coal body is converted into free gas which is convenient to quickly extract in a large flow; and a permeability increasing medium is gas, and the gas subjected to permeability increase can be exhausted from a crack channel without blocking the gas flowing channel, so that the conditions for the extraction of the gas is provided. The method has the advantages of simplicity in operation, favorable effect, high extraction efficiency of the gas and applicability.

The invention relates to a grid type across-seam drilling hole multi-hole anti reflection gas extraction method. Grid type across-seam drilling hole positions are set in the coal seal area where the gas extraction is performed; the grid type across-seam drilling hole positions set are drilled with holes one by one, forming a hole group; when the hole drilling construction enters the coal seam, hole punching is performed by using high pressure water with 5 to10MPa water pressure and 10 m³/h flow quantity to cause the drilling hole to spray holes, to form a crack between the coal seam hole and the hole, and to increase the coal seam permeability; after the drilling hole is penetrated through the coal seam of 0.5 m, the drilling hole is escaped from a drilling rod, and is inserted into a sealing tube for hole sealing. The drilling hole is connected with an extraction tube mesh through a sealing tube, a collecting tube, a gas collection tank and a branch tube, to perform gas extraction for the coal seam. The method leads the coal seam pre-drainage efficiency to be improved to over 40 percent from the original 20 percent, realizes safe, efficient and even extraction for the sole low permeability outburst coal seam, a high gas outburst dangerous coal seam is changed to be a low gas non-outburst dangerous coal seam, and the invention has a wide practicability.

The invention discloses an extraction method for a natural pigment. The extraction method for a natural pigment comprises the following steps of: (1) washing, drying and crushing raw materials, then passing through a 100-mesh sieve, performing homogeneous extraction in the mixed solution of ethanol aqueous solution in the percentage of 60-95% by volume and hydrochloric acid aqueous solution in the concentration of 0.1 mole per litre, and filtering after the extraction, so as to obtain a filtrate, wherein the pH value of the obtained mixed solution is 2.0-5.0; and the homogeneous extraction comprises a high-speed pre-treatment phase and a homogeneous extraction phase; (2) neutralizing, centrifuging and deslagging the filtrate obtained in the step (1), so as to obtain a supernatant; and (3) concentrating and drying the supernatant obtained in the step (2), so as to obtain the natural pigment, wherein the raw materials are chestnut shells, black soya bean skins, dragon fruit peels, lychee exocarps, grape seeds, hickory exocarps, acorn shells, orange peels, hazelnut shells, nectarine peels and purple sweet potato or purple-black broomcorn shells. The extraction method disclosed by the invention is simple in process, low in requirements on production equipment, not easy to break pigment substances, and high in extraction rate.

The electrode package for a secondary battery with an electrode assembly including a positive electrode, a negative electrode, and a separator interposed between those two electrodes, each of the positive and negative electrodes having an uncoated region along the edge thereof, a positive collector plate covering the front end of the uncoated region of the positive electrode to be electrically connected to the uncoated region of the positive electrode, the positive collector plate having a portion disposed outside the electrode assembly, and a negative collector plate covering the front end of the uncoated region of the negative electrode to be electrically connected to the uncoated region of the negative electrode, the negative collector plate having a portion disposed outside the electrode assembly.

The present invention discloses a process for extracting ginkgo biloba flavone, ginkgo biloba lactone and ginkgo biloba phenolic acid from ginkgo biloba leaves. The process comprises the following steps: (1) carrying out a pretreatment on ginkgo biloba leaves; (2) carrying out extraction by an ultrasonic device; (3) carrying out reduced pressure concentration; (4) loading the resulting solution on a macroporous resin to carry out a treatment; (5) collecting the resulting eluate; (6) carrying out reduced pressure concentration; (7) detecting the resulting extract; and (8) carrying out drying and storing on the extract. With the process of the present invention, the ginkgo biloba flavone content and the ginkgo biloba lactone content in the extract prepared by the process of the present invention are high, the loss of active ingredients are avoided, the production process is simplified, the production cycle is shortened, and the ginkgo biloba phenolic acid content after treatment is substantially reduced.

The invention relates to a second-order mass spectrometric detection method for bisphenol substances in a water environment, and belongs to the field of bisphenol substance detection. The problems that an existing analysis method for bisphenol pollutants is low in accuracy and precision due to interference of a natural water body matrix are solved. According to the second-order mass spectrometric detection method for the bisphenol substances in the water environment, an HLB column is adopted for solid-phase extraction, an amino column is purified, a full scanning mode is selected and used for qualitative and quantitative detection, all target objects used in a sample can be detected out at the same time by means of the mode, the mode is used for analyzing trace substances in a complex matrix, and for each substance, only one or two specific pairs of parent ions and daughter ions are selected to be detected. Matrix interference can be effectively removed, and sensitivity of detection and accuracy of qualitation and quantitation are improved.

The invention relates to a method for preparing cooked pepper resin. Pepper is cooked and crushed to corresponding particle size; the pepper resin is prepared by supercritical extraction; the extracted pepper resin is pollution-free, has strong cooked pepper aroma and effectively improves the raw smell characteristic of the pepper resin.

The invention discloses a process method for microwave assistant supercritical extraction of active ingredients of curcuma. In the method, the active ingredients, namely curcumin and fat soluble curcuma oil, of curcuma are extracted by the synergistic action of the microwave technology and the supercritical technology. The process method mainly comprises the following steps of: performing microwave intermittent sudden heating and then carbon dioxide (CO2) supercritical extraction; separating CO2 and curcuma oil in an analyzing kettle; and adding water or ethanol into curcuma residue in a solid-to-liquid weight ratio of 1:7-14, and performing microwave action, twice soaking, filtration, condensation and spray drying to obtain the curcumin. The process method solves the problem that in the prior art, only single active ingredient can be extracted or the compositions of the extract are not balanced, and realizes the extraction of two main active ingredients, namely curcuma oil and curcumin, of the curcuma at the same time, and the yield is over 8 percent and 13 percent respectively. The process method is the physical method and has the advantages of no product pollution, high purity, low cost, simple process and easy mass production.

A lighting device includes a transparent optical cavity having an exit surface including a specularly reflective material arranged to reflect light into the cavity, the exit surface having a plurality of apertures formed therein, a base surface including a specularly reflective material arranged to reflect light into the cavity, and at least one light receiving surface arranged relative to the base surface and configured to receive light from a light source. The plurality of apertures are arranged to maximize at least one of uniformity, angular distribution, efficiency or luminous intensity of light exiting the exit surface, and a distribution of light received at the light receiving surface is altered by at least one of a combination of the exit surface and the base surface, or the light receiving surface.

Efficient and reproducible production of a copolymer for lithography, which has stable quality, with little lot-to-lot variations, and is suited for film-forming and coating compositions. Radical polymerization of a monomer, which contains at least one ethylenic double bond, with an initiator, in a solvent, and purification of the reaction mixture by precipitation and filtration, in a hermetically-closable single vessel divided by a filter medium, into a first section provided with fluid feeding means and agitating means, and a second section with fluid drawing means. Feeding the reaction mixture from the fluid feeding means into the first section of the vessel, containing a poor solvent, and contacting the reaction mixture with the poor solvent to precipitate a solid; and filtering the resulting fluid, containing the precipitated solid, through the filter medium, drawing the resultant filtrate through the fluid drawing means, and then separating the precipitated solid.

Helper resonators useful for the reliable, controlled startup of an associated high power multidisk unstable imaging thin disk laser (TDL) main resonator each includes one of the thin disk gain elements (TDGEs) of the associated main resonator and a pair of helper reflectors disposed on opposite sides thereof. The helper resonators act to prevent the buildup of undesirable amplified spontaneous emission (ASE) during startup of the main resonator, pre-condition the TDGEs so as to enable efficient power transfer from the helper resonators to the main resonator when the main resonator reaches a selected feedback ratio (FBR) and provide a rapidly acting shunt for disk power in the event of a cessation of lasing of the main resonator.

The invention discloses a single chip microcomputer intelligent control microwave pyrolysis microalgae directional oil-making device. The device comprises a motor, a speed reducer, an air pump, microwave sources, a bracket, filter screens, a condenser pipe, an ox horn pipe, a liquid collection bottle, a microwave burst, temperature inductors, a seal structure, a thermal insulation layer, waveguide pipes, residue outlets, a connecting sleeve, a stirring shaft, an electrical bin, a single chip microcomputer control system, stirring fins, an N2 bottle, and a pressure sensor array. The device also comprises a tank body. The single chip microcomputer intelligent control microwave pyrolysis microalgae directional oil-making device provided by the invention adopts a metal tank, has high strength, can bear a lot of reaction materials, the microwave sources irradiate microwave evenly into the metal tank through the four uniformly disposed waveguide pipes to heat the reaction materials. The single chip microcomputer controls the reaction through the temperature in the tank and the weight change of the reaction materials, can well improve the material conversion rate, and saves energy.

The invention provides PC prefabricated component forming equipment. The PC prefabricated component forming equipment comprises two parts of a mold table and a vibration platform, and is characterized in that the mold table is a fixed platform; a guide rail is arranged on the fixed platform; the vibration platform is a mobile vibration platform; a vibration mechanism and a walk driving mechanism are arranged on the mobile vibration platform; the walk driving mechanism is positioned on the guide rail, so that the mobile vibration platform is movably arranged on the fixed platform along the guide rail corresponding to the fixed platform. The PC prefabricated component forming equipment adopts a working mode of fixed mold table and automatic moving vibration platform, improves the working efficiency, reduces the cost, improves the prefabricated component production quality, and reduces the working intensity of operators.

The invention discloses a preparation method of a mulberry red pigment. The preparation method comprises the following steps: (1) mixing dried mulberry powder with ethanol (95 wt%), adjusting the pH value of the solution to 2-4 by a critic acid water solution, carrying out high speed pretreatment at a room temperature, homogenizing, extracting, and filtering; (2) after filtering, mixing the dregs with ethanol (95 wt%), adjusting the pH value to 2-4 by a critic acid water solution, homogenizing, extracting, and filtering; (3) subjecting the filtrate to centrifugation, collecting the supernate, and freeze-drying the supernate to obtain powder, namely the mulberry red pigment. The preparation method is simple, the requirements on equipment are low, the extraction efficiency is high, the extraction time is largely shortened, and the provided method is obviously better than the conventional solvent extraction method. Moreover, the obtained mulberry red pigment has the advantages of high water solubility, beautiful appearance and luster, and stable property, and can be used as food additive and raw material of healthcare product.