35results about How to "The process device is simple" patented technology

In the device, nanometre carbon tube is used as electrode material. The characteristics are: a couple of combination electrodes composed by nanometre tube which shared collecting electrode is in middle of its core parts of the device, there is a layer of insulate textile film is fixed between said combination electrodes, two weather board with notch are fixed at out side of said combination electrodes separately, sea water to be processed is send into water container through the notch on weather board from bottom water entrance and into upper weather board in way of circuitous liquid flow. There is an isoelectrode on and stick out the electrides, seal water-proof rubber grommers are fid on bottom and top of the water container, central core parts is fixed by steel plate frame arounding it and screwing up bolt and nut.

The invention provides a continuous separation and purification device and method for behenamide. The continuous separation and purification device for behenamide is characterized by comprising a coarse product storage tank, a first-stage falling film evaporation device and a second-stage rotary wiped film short-path distillation device which are sequentially connected, wherein the first-stage falling film evaporation device is used for distilling and separating a light component; and the second-stage rotary wiped film short-path distillation device is used for distilling behenamide and separating behenamide from a heavy component. Through first-stage falling film distillation, low-boiling substances affecting the color and luster, the odor and the melting point of a product are separated by using falling film heating evaporation and short-path distillation; through second-stage rotary wiped film short-path distillation, behenamide is distilled by adopting the rotary wiped film short-path distillation device, and is separated from high-boiling substances which are large in viscosity and high in color and luster, so that continuous and automatic stable production capable of separating and purifying high-melting-point and high-boiling-point substances is achieved. The continuous separation and purification device has the advantages of high pertinence, good separation effect, simple and practical process device, high product yield, stable quality and low processing cost.

The invention relates to an electrochemical preparation method of an LiFeAs superconductor, comprising the following steps of: firstly, preparing the positive pole for structuring a battery, i.e. mixing FeAs powder with acetylene black, a bonder and methyl pyrrolidone according to a proportion in a mortar, and grinding into colloids; spreading the colloid on a clean base plate; preparing a positive pole piece through drying, compacting and drying; then assembling the battery, wherein the battery must be assembled in a glove box filled with protective gases, that moisture of the glove box is ensured to be less than 1 ppm, two poles of the battery must comprise an Li pole and the prepared positive pole and are separated by an electrolyte membrane, and a proper amount of electrolyte is addedto the battery; and finally charging the assembled battery to produce the LiFeAs superconductor on the positive pole. The invention has simpler process device, short preparation period and low production cost and is more suitable for preparing the LiFeAs superconductor in a laboratory.

A method for preparing flaky ibuprofen crystals from an aqueous solution by adding a crystal form control agent, belonging to the new technical field of pharmaceutical preparations, comprising the following steps: first preparing an aqueous solution containing ibuprofen, urea and polyvinyl alcohol, and raising the temperature to 100° C, keep warm for 12 to 24 hours and then cool to room temperature to prepare ibuprofen aqueous solution; then use hydrochloric acid and potassium chloride to prepare a buffered aqueous solution of pH=1 and add polyethylene glycol with a molecular weight of 400 grams per mole and a molecular weight of 1000 Polyethylene glycol in grams per mole, polyethylene glycol with a molecular weight of 2000 grams per mole, polyethylene glycol with a molecular weight of 10000 grams per mole, L-glutamic acid or polyacrylic acid as a crystal form control agent, Subsequently, the ibuprofen aqueous solution was added dropwise to the pH=1 buffer aqueous solution containing the crystal form control agent, stirred and reacted for 4 hours, filtered, washed twice with deionized water, and finally dried at 40°C for 12 hours to prepare the tablet ibuprofen crystals. The flaky ibuprofen crystals prepared by the method are adjustable in size and uniform in size, which is beneficial to the realization of subsequent tableting and wrapping processes, and the specific surface area of ​​the crystals is small, so that the effect of slowly releasing the ibuprofen can be realized.

A thin-film lithium niobate optical waveguide chip polishing device and polishing method proposed by the present invention use a magnetic stirring table to drive a magnetic rotor to rotate in a polishing solution, and then stir the polishing solution to flow into contact with the surface of the chip, and the polishing particles therein are in contact with the dry Semi-contact or sliding contact occurs on the surface of the chip etched by the method, accompanied by a small amount of particle bombardment. At the same time, the alkaline ions in the polishing solvent react chemically with the etched surface. Chemical etching and particle bombardment in the parallel direction of the surface, and then remove the etching products deposited on the dry etching surface and the peaks and protrusions produced by dry etching, so as to achieve the smoothing effect of the etching surface and the side wall of the waveguide. Compared with traditional contact mechanical grinding and polishing and chemical mechanical polishing methods, it has the advantages of simple structure, easy operation, low cost and less surface damage.

The invention belongs to the field of coal chemical wastewater and waste gas treatment, and in particular relates to a pretreatment system and method for high ammonia nitrogen acidic condensate of a conversion unit. The present invention replaces the circulating water heat exchanger of the coal gasification conversion unit with a desalinated water heat exchanger, uses the desalted water as the heat medium to recover heat, reduces the load of the circulating water field, and raises the temperature of the stripping liquid at the entrance of the separation tower to 100°C to 138°C. ℃, the acidic condensate (containing high ammonia nitrogen) sewage waste water is pretreated in the separation tower using a similar steam stripping method, so that the dissolved gases (high ammonia nitrogen substances, etc.) in the liquid phase are vaporized and separated as much as possible. The results show that: the total amount of high-ammonia-nitrogen substances, organic matter and sulfur-containing compounds in the gas phase increases significantly, while the liquid phase finally enters the biochemical unit with a low total amount of less than 50kg / h, which reaches the processing load of the biochemical unit, thus ensuring economical efficiency. Up-to-standard discharge after biochemical treatment.