1132results about How to "Uniform concentration" patented technology

A process for preparing low-carbon olefin from methanol or dimethyl ether includes loading its raw material and silicon aluminium phosphate (SAPO34) molecular sieve as catalyst into gas-solid parallel down-flowing fluidized bed reactor, super-short contact, reaction, fast gas-solid separation to separating resultant from catalyst to prevent secondary reaction, and regerating catalyst for cyclic use. Its advantages include high output rate (93%), high conversion rate of raw material, and less by-product.

The present invention relates to a method and an apparatus by which powder is evenly dispersed and is coated on a substrate uniformly and continuously so that a uniform layer may be formed. More specifically the present invention provides a method and an apparatus for forming a coating layer that powder is coated on an entire surface of a substrate uniformly and continuously, regardless of the material or the size of the substrate, as a uniform amount of powder entrained on the carrier air which is generated by carrier air and powder transported to a carrier pipe at a certain rate is consistently fed in to a nozzle, regardless of the size, morphology, and specific weight of the powder particles.

A fuel nozzle 110 having a plurality of swirl vane 130 on an outer peripheral surface thereof is installed within a burner tube 120, with a clearance 121 being provided. Each swirl vane 130 progressively curves from an upstream side toward a downstream side (inclines along a circumferential direction) in order to swirl compressed air A flowing through an air passage 111 to form a swirl air flow a. Here, curvature of each swirl vane 130 is greater on its outer peripheral side than on its inner peripheral side. By suppressing occurrence of an air streamline heading from the inner peripheral side toward the outer peripheral side, therefore, flow velocity on the inner peripheral side and flow velocity on the outer peripheral side become equal, thus preventing flashback on the inner peripheral side. Moreover, a swirl imparting force in the circumferential direction per unit length on the inner peripheral side and that on the outer peripheral side become equal, equalizing the fuel concentration on the inner peripheral side and the fuel concentration on the outer peripheral side. Furthermore, a leakage flow, which passes from the vane dorsal surface side through the clearance 121 and leaks to the vane ventral surface side, generates a vortex air flow, promoting mixing of fuel and air.

The invention discloses a triaxial test apparatus of soil under water-soil chemical action and a method thereof, and relates to a testing technique of soil under a special environment. The device comprises a device frame (10), a triaxial pressure chamber (20), a confining pressure exerting and deformation test device (30), a solution cyclic displacement device (40), a stress/strain control loading device (50), a displacement sensor (60) and a data collecting and processing device (70). The uniformity of ingredients and concentration of internal pore water solution of a specimen is ensured by solution circulation; the change rules of soil deformation and strength caused by chemical solution transfusion under constant stress can be simulated and researched; the confining pressure exerting principle is improved; accurate measurement of body deformation is achieved; and the conversion of strain control and stress control can be achieved.

The invention discloses a two-dimensional transition metal disulfides (TMDs) monocrystalline, and a preparation method and applications thereof. According to the preparation method, in an inert atmosphere, assist control of the concentration of S or Se in a system is realized with common metal which is capable of reacting with sulfur family elementary substance (S, Se) and hydrogen so as to control sulfuration degree or selenylation degree of a transition metal layer, and controllable growth of TMDs monocrystalline is realized via chemical vapor deposition; deposition temperature is controlled to be 750 to 850 DEG C, and deposition time is controlled to be 5 to 15min so as to complete TMDs monocrystalline preparation; wherein, strict control on high-quality two-dimensional transition metal disulfides monocrystalline is realized via optimization of preparation parameters such as substrate sputtering treatment method, sulfur family elementary substance powder using amount, absorbed S/Se metal area and kinds, hydrogen concentration, growth temperature, and growth time.

Substrates that exhibit antimicrobial and/or antifungal characteristics that persist through the useful life of the substrate, and more particularly textile substrates infused with or covalently bound to well-dispersed antimicrobial nanoparticles, such as silver and/or copper nanoparticles, which exhibit persistent and demonstrable bacteriocidal, bacteriostatic, fungicidal, fungistatic behavior through numerous wash cycles. Methods of manufacturing such substrates are also provided.

A trench Schottky barrier rectifier includes an cathode electrode at a face of a semiconductor substrate and an multiple epitaxial structure in drift region which in combination provide high blocking voltage capability with low reverse-biased leakage current and low forward voltage. The multiple structure of the drift region contains a concentration of first conductivity dopants therein which comprises two or three different uniform value from a Schottky rectifying junction formed between the anode electrode and the drift region. The thickness of the insulating region (e.g., SiO2) in the MOS-filled trenches is greater than 1000 Å to simultaneously inhibit field crowing and increase the breakdown voltage of the device. The multiple epi structure is preferably formed by epitaxial growth from the cathode region and doped in-situ.

The invention relates to a circulating fluid bed boiler furnace with water-cooled posts, which is characterized in that: the water-cooled posts arranged in the boiler furnace are able to provide enough heating area; meanwhile, enough space is left between posts for mixing materials at lower section of the boiler furnace, so as to ensure the concentration, temperature and the evenness of heat transfer; the heating status of the heat face of the water-cooled posts and the wall around the boiler furnace are similar, which is particularly beneficial for enhancing the hydrodynamic force safety of supercritical circulating fluidized bed boiler furnace. The water-cooled posts are able to be internally provided with dusts being able to through with secondary winds at the central area of the boiler furnace. The invention arranges the vertical water-cooled posts encircled by film walls between boiler furnace grid plate and a ceiling and working substance are provided from up to down in the film wall pipe; the external side of the water-cooled post faces to the burning space of the boiler furnace.

An ink tank includes a tank case and a stirrer. The proximal end of the stirrer is supported by the inner surface of the tank case in a pivotal manner. When the stirrer moves close to the inner surface of the ink tank, the stirrer is substantially parallel to the inner surface. The stirrer includes a through-hole in the vicinity of the proximal end thereof.

The invention discloses a multi-field coupling efficient automatic salting device of preserved eggs and salted eggs, comprising a tank body and a tank cover, wherein the tank body is a horizontal box body, the top of the tank body is provided with a safe overflow vent, and the bottom is connected with a self-circulation solenoid valve via a pipeline; each valve is connected with a singlechip controller; the top of the tank body is connected with a pressurized solenoid valve and a pressure-relief solenoid valve by an air tube; the pressurized solenoid valve is connected with an air compressor by the air tube; a heating pipe, a temperature sensor, an ultrasonic vibrator and a solution concentration sensor are arranged in an interlayer between the bottom of the tank body and a clapboard; the top of the tank body is provided with liquid level sensors, and each sensor is connected with the singlechip controller; and the on/off switches of the heating pipe and the ultrasonic vibrator are controlled by the singlechip controller. The invention also discloses a control method of a salting device, comprising five steps: starting the device; setting control parameters; controlling operation; and finishing control. The invention simultaneously utilizes four physical measures to improve salting efficiency.

The invention relates to a whitewashing machine for landscaping, in particular to a trunk whitewashing machine for landscaping. The invention aims to provide a trunk whitewashing machine for landscaping, which reduces the labor intensity of workers, increases the coating speed, and is convenient to use and simple in operation. In order to solve the above technical problem, the trunk whitewashing machine for landscaping includes a trolley and the like. The left side of the top of the trolley is vertically connected with a supporting plate, and the supporting plate is provided with a vertical moving device. The vertical moving device is connected with a transverse plate, and a whitewashing device is arranged on the left side of the transverse plate. The trunk whitewashing machine for landscaping can spray the whitening agent on the trunk through a liquid spraying device, and can evenly coat the whitening agent by moving the whitewashing device up and down by the vertical moving device soas to reduce the labor intensity of the workers, increase the coating speed, and achieve easy use and simple operation effects.

The invention relates to a low-temperature plasma waste gas purifying method. Waste gas enters a box body via an air inlet; the waste gas entering the box body is firstly required to be subjected to pretreatment of a high-temperature gas-liquid filtering net; the waste gas subjected to pretreatment enters a processing chamber; molecules in the waste gas can be decomposed in extremely short time due to low-temperature plasma in the processing chamber; the waste gas passing through the processing chamber enters a gas remixing chamber; concentration of the waste gas is uniform due to the gas remixing chamber so as to prepare for the entering of the waste gas in a second processing chamber; the waste gas passing through the gas remixing chamber enters the second processing chamber to be further decomposed. Compared with the prior art, the method has the advantages that under the acceleration effect of an electric field to the processing chambers, high-energy electrons are generated in stainless steel tubes, when the average energy of the electrons exceeds the molecule chemical bond energy of a target management object, the molecule bond cracks so as to achieve the aim of eliminating gaseous pollutants; by multi-stage processing, pollutant molecules can be easily decomposed efficiently; the processing energy consumption is low; the secondary pollution is prevented.

A semiconductor device includes a semiconductor substrate, source and drain regions formed on the semiconductor substrate, a recess channel that is formed on the inner surface of a recess region, which is formed on the semiconductor substrate between the source and drain regions, and in an epitaxial semiconductor film in which dopants are doped. The semiconductor device further includes a gate insulating film formed on the recess channel, and a gate electrode that fills the recess region and is formed on the gate insulating film.

The invention relates to a preparing method of an R-Fe-B sintered magnet. The preparing method of the R-Fe-B sintered magnet comprises, firstly utilizing a conventional method to prepare the R-Fe-B sintered magnet, and cleaning the sintered magnet through the steps such as oil removing, acid-washing and water deionization; secondly, bespreading metal Dy (dysprosium) at the bottom of a material box in any shape, and then filling the inside of the material box with zirconia, silicon dioxide or aluminium oxide powder; thirdly, inserting the sintered magnet into the powder in a direction perpendicular to a magnetizing direction, or placing the metal Dy plate, high-melting-point powder particles, the sintered magnet and high-melting-point powder particles sequentially inside the material box in a layered mode, wherein the bottom end of the magnet is not in contact with the Dy particles at the bottom of the material box, and adjacent magnets are not in contact with each other; finally, putting the material box inside the sintering furnace, and performing heat treatment in vacuum or Ar (argon) protective atmosphere at the temperature of 750-1000 DEG C and enabling the Dy to enter the inside of the sintered magnet along a grain boundary through diffusion. By means of the preparing method of the R-Fe-B sintered magnet, the processing cost of the Dy is greatly reduced, the process is simplified, and the coercivity of the magnet after heat treatment is greatly improved.

The invention discloses a method for preparing a graphene-metallic oxide nano-particle three-dimensional porous composite material. The method comprises the steps of (1) dissolving raw materials, namely graphene oxide and metal salt, into water, and mixing uniformly; (2) carrying out freeze drying treatment on a product; (3) carrying out heat treatment on the product obtained in the step (2) in a certain atmosphere or vacuum, thereby obtaining the graphene-metallic oxide nano-particle three-dimensional porous composite material, wherein the temperature of the heat treatment is 200-1,100 DEG C, and the time for the heat treatment is 10 seconds to 10 hours.

An image forming apparatus includes a latent image carrier, a latent image forming unit, a developing unit, a toner supplier, a toner concentration detector, a prediction calculator, and a toner supply controller. The toner supplier includes a single driving source and supplies toner to a two-component developer at a predetermined supply position by driving a toner supply member with the driving source. The toner concentration detector detects a toner concentration in the developer at a predetermined detection position located upstream of the supply position. The prediction calculator predicts changes in the toner concentration in the developer over time at a prediction position located at the supply position or downstream of the supply position and upstream of a developer feed position to the developer carrier when toner is not supplied, based on a result of the toner concentration detection. The toner supply controller adjusts an amount of the toner supplied based on the prediction.

The invention relates to a high-plasticity aluminum alloy for a heat exchange fin plate, which comprises the following elements: 0.05-0.10wt% of silicon, 0.55-0.60wt% of ferrum, 0.08-0.15wt% of cuprum, less than or equal to 0.01wt% of manganese, less than or equal to 0.01wt% of zinc, less than or equal to 0.01wt% of magnesium, less than or equal to 0.03wt% of titanium and unavoidable impurities, and the balance of aluminum, wherein the Fe content is above 6 times of the Si content. The high-plasticity aluminum alloy for the heat exchange fin plate, prepared by a continuous cast rolling and cold rolling production technology, as well as a middle high temperature homogenization annealing technique is good in ductility.