44 results about "Crystal deposition" patented technology

The stacked scintillator panel according to the present invention is comprised of stacking a plurality of panels 1, 2, 3, 4, having scintillator 1b, 2b, 3b, and 4b deposited by vapor deposition on substrates 1a, 2a, 3a, and 4a for crystal deposition. Each of the substrates 1a, 2a, 3a, and 4a is a light transmitting substrate that transmits at least a portion of the wavelength range of the light emitted from the corresponding scintillator 1b, 2b, 3b, or 4b upon radiation incidence.

The invention relates to a method to make high purity cerium oxide that includes the following steps: taking ultrasonic leaching and extraction to gain rare earth sulfate enriched liquid; taking solid-liquid separation; taking neutralization deposition, taking solid-liquid separation, taking electrochemistry oxide to gain quadravalence cerous sulfate material liquid, taking ultrasonic fractional extraction, taking electrochemistry reducing to gain trivalence cerous sulfate, taking ultrasonic crystallization deposition to gain cerous sulfate crystal deposition, taking solid-liquid separation, drying and burning to gain the superfine high purity cerium oxide product of content over 99.99%, and the particle diameter is 0.01-10.0um. The advantages of the invention are that it improves leaching and extracting speed, improves yield, and purity, lowers cost and is environment protection.

The invention relates to a method to make europium oxide that includes the following steps: mixing raw material, taking solid-liquid separation to gain enriched liquid containing europium acid rare earth, taking electrochemistry reaction to gain EuCl2 solution, taking ultrasonic to gain refined liquid of EuCl2, taking electrochemistry reaction to gain refined liquid of EuCl3, taking adsorption and trash extraction, taking ultrasonic crystal deposition to gain Eu2(CO3)3 crystal deposit, taking solid-liquid separation, drying and burning to gain the superfine high purity europium oxide product that has content over 99.99%, and the particle diameter is 0.01-10.0um. The advantages of the invention are that it improves leaching and extracting speed, and the particle diameter is small, and particle size distribution equal.

The invention relates to a method to make neodymium oxide that includes the following steps: mixing raw material, taking ultrasonic fractional extraction to gain enriched liquid containing Nd(NO3)3, taking ultrasonic to gain refined liquid of Nd(NO3)3, taking adsorption and trash extraction, taking solid-liquid separation, taking ultrasonic crystal deposition to gain Nd2(CO3)3 crystal deposit, taking solid-liquid separation, drying and burning to gain the superfine high purity neodymium oxide product that has content over 99.99%, and the particle diameter is 0.01-10.0um. The advantages of the invention are that it improves leaching and extracting speed, and the particle diameter is small, and particle size distribution equal.

The invention belongs to the technical field of composite materials, and discloses a papyraceous gradient microfiber composite metal organic framework material as well as a preparation method and application thereof. The method comprises the following steps: (1) preparing a papyraceous sintered fiber carrier; (2) pretreating the papyraceous sintered fiber carrier by adopting aminopropyltriethoxysilane to obtain a pretreated papyraceous sintered fiber carrier; (3) growing and depositing MOFs crystals on the surface of the pretreated papyraceous sintered fiber carrier; and (4) growing an MOFs film on the papyraceous sintered fiber carrier subjected to crystal deposition. According to the preparation method, the MOFs continuously grow on the surface of the papyraceous sintered fiber carrier without defects to form the compact MOFs film, so the cost is low, and the film has a relatively small and adjustable thickness, high adjustable porosity and high mechanical strength; when the film isapplied to a fixed bed, mass transfer and heat transfer can be enhanced, and a bed pressure drop can be decreased; and the papyraceous gradient microfiber composite metal organic framework material has a wider application prospect in the field of catalysis and adsorption.

This invention relates to compositions and a process for stabilizing or improving the solubility of a phenolic resin containing a mixture of linear phenolic resins and calixarenes in a hydrocarbon solvent. This invention also relates to a paraffin-containing fluid composition comprising this stabilized (solubilized) calixarene resin. The invention also relates to methods for dispersing paraffin crystals, inhibiting paraffin crystal deposition, or treating a well or vessel to reduce the deposition of paraffin crystals, with a resin composition containing this stabilized (solubilized) calixarene resin.

The invention discloses a pipe bunch system of a hydrogenation reaction effluence air cooler applied in chlorine raw oil processing, which comprises four channel boxes and six tube grid pipe bundles. The channel boxes comprise outer side pipes and inner side pipes. The outlet of a first channel box is communicated with the inlet of a second channel box by a first tube grid pipe bunch and a second tube grid pipe bunch. The outlet of the second channel box is communicated with the inlet of a third channel box by a third tube grid pipe bunch and a fourth tube grid pipe bundle. The outlet of the third channel box is communicated with the inlet of a fourth channel box by a fifth tube grid pipe bundle and a sixth tube grid pipe bundle. Two rows of pipe bundles in a first tube pass adopt clad pipes, which avoids under-deposit corrosion of NH<4>Cl crystal deposition or local erosion caused by under-deposit corrosion in cooling process. As liquid water quantity is added, a second tube pass and a third tube pass adopt carbon steel pipe bundles, which can reduce the manufacturing cost of the REAC system. The inlet water of the reaction effluence flows into the first channel box horizontally and the outlet water of the reaction effluence flows out of the fourth channel box horizontally, thus avoiding uneven distribution of oil, air and water in the upper row of pipe bundle and the lower row of pipe bundle. The invention can increase safe operation cycle and the economic benefit of the hydrogenation REAC system.

The invention discloses a method for continuous production of ferric chloride. The method is characterized in that a ferric chloride solution is successively subjected to evaporating concentration, modification cooling, cooling crystallization, thickening and continuous separation to obtain a solid ferric chloride hexahydrate product. The method of the invention solves the problems of crystallization deposition at the bottom of a crystallization kettle, high energy consumption and low intermittent production efficiency in the production process of ferric chloride hexahydrate. The method optimizes the crystallization process of ferric chloride, so the crystallization time is shortened, the continuous production of ferric chloride hexahydrate is realized, the crystal deposition at the bottomof the crystallization kettle is avoided, the energy consumption is reduced, the production efficiency is improved, and the obtained ferric chloride product has a high content and a large particle size.

A method of crystallization which comprises feeding to a crystallization vessel either a solution of terephthalic acid or a slurry solution in which part of terephthalic acid has been precipitated, crystallizing the terephthalic acid in the vessel to obtain a slurry comprising crystals and the solvent, and discharging the slurry, wherein the slurry discharged from the crystallization vessel is introduced into a liquid cyclone through a tangential-direction inlet, and the slurry component constituting a descending turning flow and flowing out through the lower outlet of the cyclone is returned to the crystallization vessel, while the slurry component overflowing through the upper outlet of the cyclone is discharged. Thus, crystals having a large particle diameter can be obtained. Furthermore, no crystal deposition or accumulation within the crystallization vessel occurs, and the crystallization operation can be stably conducted for long.

Disclosed is a novel compound useful as a charge transporting agent which has a high carrier mobility and with which a photosensitive layer can be stably formed without causing crystal deposition or pinhole formation during the formation of the photosensitive layer and also an organic photoreceptor for electrophotography having a high sensitivity and a low residual potential can be produced. The compound is represented by general formula (1). In general formula (1), R1 to R7 each represent, for example, an alkyl group, X1 represents, for example, -CH=CH-CH=CH2, X2 represents, for example, -CH=CH2, and k and l each represent an integer of 0 to 4.

The invention relates to a method to make praseodymium oxide that includes the following steps: mixing raw material, taking ultrasonic fractional extraction to gain enriched liquid containing Pr(NO3)3, taking ultrasonic to gain refined liquid of Pr(NO3)3, taking adsorption and trash extraction, taking solid-liquid separation, taking ultrasonic crystal deposition to gain Pr2(CO3)3 crystal deposit, taking solid-liquid separation, drying and burning to gain the superfine high purity praseodymium oxide product that has content over 99.99%, and the particle diameter is 0.01-10.0um. The advantages of the invention are that it improves leaching and extracting speed, and the particle diameter is small, and particle size distribution equal.

The invention discloses an apparatus and a method for continuously separating o-isopropylphenol and p-isopropylphenol. The apparatus comprises: a tower 1 and a tower 2, wherein the tower 1 and the tower 2 are connected in series, rotation scrapers are respectively arranged on tower body axis centers inside the tower 1 and the tower 2, the lower portion inside the tower 1 is provided with a grid, the outer sides of the tower 1 and the tower 2 are provided with constant temperature material inlets, a liquid purification section, a crystal purification section, a melting purification section and a crystal deposition section are sequentially arranged inside the tower 1 from top to bottom, a residue liquid recovery section, a crystal re-purification section and a crystal re-deposition section are sequentially arranged inside the tower 2 from top to bottom, and an outlet on the bottom of the tower 1 is connected with the constant temperature material inlet on the middle part of the tower 2. The method comprises that: a material requiring separation is subjected to continuous re-crystallization in the tower 1 and the tower 2 to separate o-isopropylphenol and p-isopropylphenol. With the apparatus and the method, continuous material feeding and material discharging can be achieved, and high purity o-isopropylphenol and p-isopropylphenol products can be produced.

A polymerizable liquid-crystal compound of formula (I) effective for preventing crystal deposition after coating with polymerizable liquid crystal (II) or a polymerizable liquid crystal similar thereto. P represents a polymerizable functional group; Sp represents a spacer or a single bond; Z1 and Z2 each represent —CO—O—; R0 represents a linear alkyl group having 1-15 carbon atoms; R2, R3 and R4 each independently represent an alkyl group having 1-4 carbon atoms, an alkoxy group having 1-4 carbon atoms, an alkoxycarbonyl group having 2-5 carbon atoms, an acyloxy group having 2-5 carbon atoms, an acyl group having 2-4 carbon atoms, an amide group having 2-5 carbon atoms, a cyano group, an amino group, a hydroxyl group, or a halogen atom; r1, r2 and r3 indicate an integer from 0-4; when r1, r2 and r3 each are 2 or more, then R2, R3 and R4 each may be the same or different; however, when R0 is a methyl group, then r2 is not 1.

The invention discloses a method of forming the metal-insulation-metal capacitance on the base layer including dielectric layer, bronze bottom plate, bronze wire and blocking layer, the metal -insulation-metal capacitance is embedded in the bronze joint. This method includes the following processes: in the dielectric material on the blocking layer forms the through open hole with damascene structure and the placket on the flat plate of the metal-insulation-metal capacitance; deposit a dielectric layer on the relating placket, this dielectric layer is the middle insulation of the metal-insulation-metal capacitance; form a resist layer on the placket of the flat of the metal-insulation-metal capacitance; implement a photo etch procedure to eliminate the dielectric layer to unveil the bronze wiring, and the side wall of the through hole placket still has the dielectric layer to be as the metal block; then carry out the general bronze mutual connection technique (including metal block deposition, bronze crystal deposition, bronze electroplate, and chemical technological rubbing), so as to complete the metal-insulation-metal capacitance.

The invention belongs to the technical field of tertiary oil recovery utilizing microbes and metabolism thereof to improve the crude oil yield, and discloses a strain of exiguobacterium mexicanum 2a, which is preserved in China Center for Type Culture Collection. The preservation number of the strain is CCTCC M2014674. The invention also discloses applications of exiguobacterium mexicanum 2a. The strain can be used to degrade crude oil or solid paraffin and can also be used to prevent crystal deposition of paraffin. The maximal degradation rate of colloids and asphalt in crude oil can reach 72.8% and 57.9% respectively, the viscosity of crude oil can be reduced by 11.1%, the solubility of solid paraffin in n-hexane is prominently improved, the soluble paraffin accounts for 62.0 % of the total weight of paraffin; compared with a control group, the crystallized paraffin is reduced by 64.7%; the wax clearing rate and wax preventing rate reaches 77.1% and 96.9% respectively; the cells of exiguobacterium mexicanum 2a are highly hydrophobic, the cells can tightly adhere on the surface of metals to form a biological membrane, and thus the crystal deposition of wax is prevented.

Oils and fats having a high 2-position palmitic acid content, which are used as a raw material for an oil / fat composition containing an XPX triglyceride having palmitic acid linked to position 2 thereof and X linked to positions 1 and 3 thereof, crystalize at low reaction temperature, likely leading to troubles such as clogging of a reaction vessel (X: an unsaturated fatty acid or a saturated fatty acid having not more than 10 carbon atoms). However, according to the present invention, when such oils and fats are mixed with a particular raw material fatty acid or a lower alcohol ester thereof, the cloud point of the raw material mixture can be set to 39.5° C. or lower, and therefore, crystal deposition does not occur even at a low reaction temperature.

This invention relates to a paraffin-containing fluid composition comprising a phenolic resin containing one or more calixarene compounds (i.e., a calixarene resin). The invention also relates to methods for dispersing paraffin crystals, inhibiting paraffin crystal deposition, or treating a well or vessel to reduce the deposition of paraffin crystals, with a calixarene resin.

The invention discloses an extraction method of a clerodendranthus spicatus total flavone extract. The method comprises the following steps: adding an ethanol aqueous solution with a liquid-material ratio of 5-25 L / Kg and a concentration of 0-95% into a clerodendranthus spicatus powder, performing soaking at room temperature for 1-48h with stirring, performing ultrasonic treatment, filtering the obtained extract liquid, and concentrating filtrate to obtain a paste; and separating the paste with weak-polar macroporous adsorbent resin columns, performing elution with 2-4BV water to remove impurities, performing elution with 2-4BV ethanol with a concentration of 0-95%, collecting ethanol eluent, recovering ethanol under reduced pressure, and performing drying under reduced pressure to obtaintotal flavone extract. The experimental results show that the total flavone extract of the kidney tea can promote serum creatinine and urea nitrogen levels of mice to be obviously reduced, the calciumcontent of kidney tissues to be obviously reduced, and the crystal deposition of calcium oxalate in kidney tissues and the pathological tissue injury of the kidney to be obviously reduced. The clerodendranthus spicatus total flavone extract has effect in preventing or treating urinary calculus, and can be used for preparing medicines, health products or foods for preventing or treating urinary calculus.

The invention is concerned with use of oral inorganic pyrophosphate for preventing and / or reducing tissue calcification, particularly soft tissue calcification, and / or diseases or disorders characterized by low plasma PPi levels, as, e.g., occurs in chronic kidney disease (CKD), end-stage renal disease (ESRD), generalized arterial calcification of infancy (GACI), Pseudoxanthoma elasticum (PXE), Arterial Calcification Due to Deficiency of CD73 (ACDC), Ehlers-Danlos syndrome, arteriosclerosis obliterans, venous calcifications, crystal deposition disorders, calcification resulting from neurological disorders, calcinosis universalis, calcinosis circumscripta, scleroderma, dermatomyositis, systemic lupus erythematosus, hyperparathyroidism, neoplasms, milk-alkali syndrome, hypervitaminosis D, tumoral calcinosis, hypophosphatemic rickets, ossification of the posterior longitudinal ligament of the spine, myocardial ischemia, joint calcification, heterotropic ossification of traumatized muscle, angioid streaks, diabetes mellitus type II, cardiovascular disorder, or atherosclerosis.

The present invention discloses an experimental device and method for detecting the crystallization characteristics of NH4Cl in a U-shaped heat exchange tube bundle. The main material of the heat exchange tube bundle part is organic glass, and the outside is covered with an organic glass sleeve. A deposition probe is inserted into the bend of the main material. The bundle inlet of the heat exchange tube bundle part is connected to the material inlet part, and the bundle outlet of the heat exchange tube bundle part is connected to the material outlet part. The organic glass sleeve is provided with an inlet and an outlet. The inlet and outlet of the organic glass sleeve are connected to the cooling system to form a circulation loop; the heat flux density is calculated by the temperature difference between the inner and outer surfaces of the deposition probe to characterize the crystallization solution of NH4Cl salt, and the crystallization conditions of NH4Cl salt at different places of the bend of the heat exchange tube bundle are obtained. The present invention is simple to operate, and the phenomenon is obvious and visible, and can be used to solve the problem of ammonium salt crystallization deposition corrosion in U-shaped heat exchangers in the current petrochemical industry.

The invention relates to the technical field of molecular biology and biomedicine, and particularly, relates to a method for preparing a Bietti Crystalline Dystrophy (BCD) non-human mammal model and application thereof. The method comprises: knocking out a first exon in an animal CYP4V3 gene knockout transcript by using a Crispr-Cas system. The animal model prepared by the method generates typicalyellow-white crystal depositions at fundi at the age of 7 months, while an existing model can generate typical crystal depositions at least at the age of 12 months; the model is beneficial for developing experiment research as soon as possible in the time dimension; meanwhile, the animal model generates the outer nuclera layer atrophy corresponding to extinguishment of a and b waves in electroretinogram (ERG) at the age of 12 months in the natural course, while the existing model does not generate the outer nuclera layer atrophy in the followed course; and the model simulates decline of a visual function of a BCD patient better, and is more beneficial for exploring the pathological mechanism of BCD.

A flow corrosion-salt deposition device for supercritical water oxidation reaction coupling, including a supercritical water oxidation coupling section, a flow corrosion-salt deposition test section and a connecting pipeline section, the supercritical water oxidation coupling section includes a main pipe section, an organic compound mixture The inside of the main pipe section is a material channel composed of a tapered cavity, a throat cavity and a gradually expanding cavity connected in sequence from front to back. The rear end of the expanding cavity is provided with a thermocouple and a pressure tap. The organic compound mixer and the oxidant mixer are arranged outside the main pipe section; the flow corrosion-salt deposition test section includes a test pipe section, an electric heater is installed in the outer front section of the test pipe section, a cooling water jacket is installed in the outer rear section, and a thermocouple and a pressure tap are installed in the middle; The connecting pipe section includes a connecting pipe, which directly communicates with the rear end of the test pipe section and is provided with a thermocouple and a pressure tapping port. The invention can solve the problems of corrosion and salt deposition in supercritical water oxidation, and explore the microscopic characteristics of material corrosion and the crystallization deposition characteristics of inorganic salts.

The present invention belongs to the technical field of semiconductor equipment, and specifically relates to a silicon carbide crystal deposition device, comprising: a cylinder and a chassis; the chassis and the cylinder are sealed and cooperated to form a deposition space; a cover body with a curved surface structure is arranged in the cylinder, so that the curved surface structure is opposite to the center of a feed nozzle, and plays a role in rapidly diverging and diverting airflow; and the gradually smaller space between the bottom and the side wall of the curved surface structure is conducive to increasing the flow rate and backflow of the gas leaving the nozzle, so as to form an airflow that is rapidly transported downward, and the airflow in the cover body flows rapidly from top to bottom in a single direction, which is conducive to the mass transfer process of the deposited material, thereby improving the compactness of the deposited crystal; the space in the cover body is small, and the material can effectively contact with the surface of the internal electrode assembly, and the material is collected again through the air outlet holes on the cover body and blown to the electrode assembly outside the cover, which can also promote the material to fully and effectively contact with the electrode assembly outside the cover, and the material is subjected to two-stage contact and reaction, and the utilization rate is significantly improved.

The application discloses a marine diesel engine nitrogen oxide emission reduction system control method and particularly relates to the technical field of diesel engine nitrogen oxide emission reduction. By constructing a spray-wall decomposition deficiency coefficient and a local low-temperature region migration description, potential crystal deposition areas can be identified in advance and their space-time drift trends can be predicted, so that the control strategy can be adjusted in a targeted manner to inhibit the formation and accumulation of crystal deposition from the source. Meanwhile, through joint evaluation of a crystal deposition potential accumulation index and back pressure evolution characteristics, short-period crystal deposition influence and long-period degradation trends can be distinguished in closed-loop adjustment, fine compensation of injection offset can be realized, the local low-temperature effect can be corrected in time, and systematic degradation caused by continuous back pressure rise can be avoided.

The invention relates to the field of biological medicines, and discloses application of a mechanism of BMP2 silencing in elimination of renal calcium oxalate calculus injuries, and the mechanism is as follows: CaOx crystal deposition and renal cell injuries are reduced by inhibiting oxidative stress reaction through BMP2 silencing. The invention proves that the BMP2 silencing can alleviate sodium oxalate-induced cell oxidative stress and crystallization, and can inhibit phosphorylation of Smad1 and expression of NOX2 and NOX4, proves that the BMP2 silencing can reduce CaOx crystal deposition and renal cell injuries by inhibiting the oxidative stress reaction, and shows that the BMP2 silencing can eliminate the renal tubular epithelial cell oxidative stress injuries. A new direction is indicated for the pathogenesis research of the calcium oxalate calculus .

The utility model relates to the technical field of heat exchangers, and discloses a heat exchanger for cooling a crystallized material, which comprises a shell, an inlet pipe box, an outlet pipe box and a detachable end cover, one end of the shell is sequentially connected with the inlet tube box and the outlet tube box, and the other end of the shell is connected with the detachable end cover; the shell is respectively connected with the material inlet and the material outlet; the inlet pipe box is connected with a cooling water inlet, and the outlet pipe box is connected with a cooling water outlet; a plurality of winding stair type baffle plate groups and a plurality of longitudinally arranged heat exchange tubes are arranged in the shell; each winding stair type baffle plate group comprises two winding stair type baffle plates which are symmetrically arranged left and right; the winding stair type baffle plates are perpendicular to the longitudinal section of the heat exchange tube, and the radial projection of each winding stair type baffle plate is a semicircle and is matched with the shell. The detachable tube bundle and the optimized shell pass flow are convenient to maintain, and crystal deposition is reduced, so that the service life of equipment is prolonged, and the blockage problem is relieved.

The utility model relates to the technical field of separators, and discloses a separator for diethyl maleate, which comprises a plurality of groups of supports, the tops of the supports are fixedly connected with a base, a mixing tank is arranged above the base and penetrates through the base, a rubbing unit is arranged in an inner cavity of the mixing tank, and the rubbing unit is connected with the base. A striking unit and a turnover unit are arranged at the bottom of the base; the beating unit comprises a first supporting plate fixedly connected with the bottom of the base. According to the separator for diethyl maleate, a first gear is driven to rotate, then a ball is driven to move, the surface of a filtering net bag is beaten, crystals formed after diethyl maleate is cooled are filtered, the crystals attached to the inner wall are deposited at the bottom, the crystals can be conveniently collected into a proper container, resource waste is reduced, and the practicability is high. Meanwhile, accumulation and obstruction of crystals on the filtering net bag are reduced, the filtering and draining efficiency and speed can be improved, and the production efficiency is improved.

The invention relates to an automatic enrichment and cultivation device for high-salt-resistant bacteria, comprising an automatic enrichment and cultivation device body. A cleaning mechanism is arranged inside the automatic enrichment and cultivation device body. Through the arranged cleaning mechanism, when a user cleans a sewage pipe, the user can start a motor, and the output end of the motor drives an extension rod to rotate, the extension rod drives a lead screw to rotate, the lead screw drives a threaded mother seat to move up and down, the threaded mother seat rotates during the movement, thereby causing a scraper to rotate, and during the rotation of the scraper, crystalline deposits can be scraped off, and the scraped crystalline deposits fall into a storage box, and a reset spring pushes a mounting plate toward the inner wall of the sewage pipe to ensure that the scraper is always in close contact with the pipe wall of the sewage pipe to maintain a good cleaning effect. To maintain the cleaning effect, the user can rotate a limiting plate to drive the screw to rotate, and the screw is threadedly connected to the threaded barrel, thereby changing the length of the screw, reducing the pressure of the reset spring, and improving its applicability.

The invention relates to the field of tetrachlorophthalic anhydride crystallization, in particular to a crystallization device for tetrachlorophthalic anhydride production, which comprises a machine body, the top end of the machine body is fixedly connected with a driving motor, the machine body is internally provided with a driving cleaning mechanism, and the driving cleaning mechanism is provided with a relative linkage mechanism. Through mechanical coupling of the unique driving cleaning mechanism and the multifunctional stirring mechanism, under driving of a single driving motor, powerful mixing of materials and continuous cleaning of a device wall are synchronously completed, a first scraper and a second scraper are attached to the inner wall in a self-adaptive mode under the action of centrifugal force, crystal deposition is effectively removed online, and the service life of the device is prolonged. The high-efficiency heat exchange state of a heat transfer surface is maintained, and cooling efficiency attenuation and process fluctuation caused by scaling are avoided, so that the necessary periodic shutdown kettle cleaning link in the traditional process is fundamentally reduced, the annual effective operation time of the device is greatly prolonged, the maintenance cost and the energy consumption are reduced, and stable, continuous and high-efficiency production is realized.