60results about How to "Small amplification effect" patented technology

An alpha type cyclone separator which belongs to the isolation technique comprises a straight bowl body, a conical bowl body, an ash exhausting pipe, a coping, a liquid inlet, and a liquid outlet. The utility model is of small conical angle and long conical body structure, and the angle between the axes of the liquid inlet and the horizontal direction is of alpha. The coping is a spiral lamina with an obliquity of alpha, and an air inlet and the straight bowl boy, as well as the coping are tangent according to the obliquity alpha of the coping. The alpha is from 5 DEG C to 25 DEG C, and a second class or a second and third circumfluent cyclone separator also can be connected in series. The separating efficiency of the alpha type cyclone separator is obviously superior to a traditional hydrocyclones, and the alpha type cyclone separator is of low pressure drop, small amplification effect, high separation definition, and obvious energy saving effect. The pressure drop is about 70 percent that of traditional hydrocyclones, therefore, the utility model can satisfy the separating demand of high concentration, widely distributed granularity of solid particles, highly required technical process, and great difficulty for classification. The cyclone separator can be widely popularized and applied in chemical engineering, petroleum, metallurgy, medicine, and environmental protection field.

The invention discloses a monolithic catalyst for synthesizing dimethyl carbonate. The catalyst is composed of active components Cu and Ni nanoparticles, a carrier that is a triphenylphosphine porouspolymer and a honeycomb ceramic matrix. The Cu and Ni nanoparticles are loaded on the triphenylphosphine porous polymer POP-PPh3, and the honeycomb ceramic matrix is coated with the triphenylphosphineporous polymer POP-PPh3 loaded with the CuNi nanoparticles to form the CuNi/POP-PPh3 monolithic catalyst. The application method comprises the following steps: putting the CuNi/POP-PPh3 monolithic catalyst into a steel pipe of a fixed bed reactor, and introducing CO2 for 5 minutes to remove other gases in a reaction system; heating to 120-180 DEG C, transporting the liquid methanol to a preheaterthrough a high-pressure constant-flow pump for gasification treatment, and reacting the mixture for 2-6 hours with the molar ratio of CH3OH to CO2 in the reaction gas being 1-3 to obtain the dimethylcarbonate. The monolithic catalyst provided by the invention is used for one-step synthesis of DMC from CO2 and methanol, and the yield of DMC exceeds 8%.

The invention provides a production system for continuously producing 107 glue with double screws. A dehydration kettle, a preheater, an on-line mixer, a polymerization cylinder, a degradation device, a low molecule remover and a twin-screw extruder are sequentially connected, wherein the low molecule remover is further connected with a steam-water separator; the steam-water separator is in valve pipeline connection with the dehydration kettle; and the dehydration kettle, the on-line mixer and the degradation device are provided with feed ports. The invention further provides a production method for continuously producing the 107 glue with the double screws. According to the method and the system, technological equipment is simple, the investment, the power consumption and the production cost are low, the production capacity and the product quality are high, the 107 glue can be continuously produced by the double screws via improvement, relatively thorough automation is realized, the operation is simple, and the production is stable.

The invention discloses a fractional order auto-disturbance motion control method based on an adjustable-order filter. The method comprises steps that according to the Newton's law of motion, a nonlinear dynamic model of a motion control system is established; measurement noise is filtered through utilizing the adjustable-order filter; the order of the filter is adjusted to achieve the better filtering result; an extended state observer is utilized to improve the disturbance suppression effect of the system; a motion controller is designed through utilizing the fractional proportional differential algorithm, and the tracking reference input is made to output. The method is advantaged in that parameter adjustment is flexible, engineering realization is easy, and the suppressing ability of the motion control system for measurement noise and interference is effectively improved.

The invention provides a continuous light chemical reaction apparatus, a system and a continuous preparation method of a propellane carbonylation reaction. The continuous light chemical reaction apparatus comprises a continuous reactor, an irradiation light source used for providing illumination to a continuous reactor for performing the continuous light chemical reaction, and a temperature control apparatus, the continuous reactor of the temperature control apparatus and the irradiation light source are positioned in the temperature control apparatus, by arranging the continuous reactor, the light chemical reaction can be continuously generated, the reaction raw materials are continuously introduced into the reactor, the reaction products are continuously discharged from the reactor, the continuous reaction can effectively improve the transmission efficiency of optical radiation in a reaction mixture, so that the reaction time is shortened, the reaction efficiency is increased, and side reaction is reduced. The batch reaction is stable, the temperature control operation is convenient, the continuous light chemical reaction apparatus is benefit for amplification of the light chemical reactions from a laboratory scale to a factory grade, and the amplification effect is smaller.

A circumfluent cyclone multi-grade classification device and a classification method and use of powder particles are provided. The device includes a particle classifier and a cyclone dust remover, which respectively comprises a direct cylinder, an inner part, a gas import, a cone, two ball valves, an ash storehouse, a nitrogen import, etc. the inner lateral of the inner part of the classifier and the inner lateral of the cone are respectively equipped with two to four flat slab-shaped or arc slab-shaped guide slide ways. The method includes that air containing dusts is extracted and is introduced into the particle classifier. The particles lager than 15-20 Mu m are separated and are returned. The extracted air is introduced into the cyclone dust remover. The dust remover is used to remove the fine particles smaller than 15 Mu m. And the air of which the fine particles are returned to a reactor. The catalyst particles which are larger than 20 Mu m are recovered through the classification of the catalyst particles which can be used in an acrylonitrile fluidized bed reactor. Fine catalyst powders can be ensured to be not carried out by airflow, classified and discharged. The equipment can be prevented from being blocked. The efficiency is improved and the cost is lowered. The device can be widely applied to the multi-grade classifications of various powder particles.

The invention discloses a stable overhanging type double-layer space intelligent cantilever structure system, comprising lattice columns, space cantilever structures, a ring beam and a roof. The lattice columns are lattice columns with rhombic sections, the upper end of each lattice column of the bionic double-layer space cantilever structure imitating dragonfly wings. A movable, limiting and locking balance block is arranged at the end of a main vein of an upper layer space structure in each double-layer space cantilever structure. The ring beam comprises a cantilever upper ring beam, a cantilever lower ring beam and a roof ring beam which respectively serve as a double-layer space cantilever structure upper inner edge, a double-layer space cantilever structure lower inner edge and a roofouter edge, the double-layer space cantilever structures and the lattice columns are annularly distributed, the roof is arranged on the inner sides of the double-layer space cantilever structures, and the lattice columns provide support for the double-layer space cantilever structures and the roof through the ring beam. The cantilever structure is large in span, high in structural safety and stability, low in material consumption and light in dead weight, and breaks through the shape of the cantilever structure.

The invention discloses a method for synthesizing propylene by using methanol, for solving the problems that in the existing technique for preparing propylene by using methanol, the selectivity of propylene is low and cannot meet the requirement of industrial application and subsequent separation is very difficult. The method disclosed by the invention comprises the following steps of: preparing an intermediate mixture; synthesizing propylene; and separating propylene. According to the method for synthesizing propylene by using methanol, the raw material is a methanol aqueous solution. By the method disclosed by the invention, the problem that in the existing technique for preparing propylene by using methanol, the selectivity of propylene is low can be solved effectively, and therefore, the subsequent separation difficulty is reduced, the production cost is lowered and the economic efficiency of enterprises is improved.

The invention discloses a desulfurizing tower for gas desulfuration by liquid phase catalytic oxidation. The lower part of the washing segment of a desulfurizing tower is provided with an inlet for gas to be desulfurized, and the upper part of the washing segment of the desulfurizing tower is provided with a doctor solution spraying part. The desulfurizing tower is characterized in that a descending pipeline causing desulfurized gas to pass is arranged along the axis of the washing segment of the desulfurizing tower, and the top of the washing segment of the desulfurizing tower is provided with an entrainment capturing device and is communicated with a horizontal pipeline which can lead the desulfurized gas out of the lower part of the washing segment of the desulfurizing tower. The desulfurizing tower of the invention has simple structure and good stability and is easy to manufacture and install. The structure that sulfurous gas enters or leaves the desulfurizing tower is more reasonable, which is favourable for the even distribution of desulfurized gas which enters or leaves the desulfurizing tower; the entrainment capturing device arranged on the top reduces entrainment, is favourable for lowering tower height and is favourable for reducing the equivalent diameter of the washing segment of the desulfurizing tower so as to bring convenience for reducing amplification effect and improve desulfurizing efficiency; a vertical heavy-calibre gas pipeline which is connected out of the upper part of the washing section is cancelled, namely eccentric load, wind load and the like which are unfavorable for the desulfurizing tower are cancelled.

The invention provides a narrow trench manufacturing method. The method includes the steps that (1) a silicon nitride layer and a hard mask are arranged on a semiconductor substrate in sequence; (2) photoresist is arranged on the hard mask; (3) the photoresist is exposed and developed to form a phototresist pattern with a first size; (4) after the phototresist pattern is formed, ion injection is conducted on a wafer so as to conduct non-crystallizing processing on the exposed area of the phototresist pattern; (5) after ion injection is conducted, dry etching processing is conducted by using the phototresist with the phototresist pattern so as to form a trench with a second size in the substrate.

A cyclone separator for crude gas dust removal in crushed coal pressurized gasification comprises a cyclone dust collector (1) and a dust tank (13). The cyclone dust collector (1) comprises an outer cylinder (11) and an inner cylinder (5). The upper portion of the outer cylinder (11) is vertical, the lower portion of the outer cylinder (11) is conical, and the outer cylinder (11) is composed of an outer cylinder outer wall (8) and an outer cylinder inner wall (9). The inner cylinder (5) is fixed to the outer cylinder inner wall (9) through a stretching part (10). A gas inlet (2) is connected with the lower portion of the inner cylinder (5) through the outer cylinder (11), and a gas outlet (3) is located in the top end of the outer cylinder (11). A cyclone dust collector hot water outlet (7) is formed in the upper portion of the outer cylinder outer wall (8), and a cyclone dust collector hot water inlet (6) is formed in the lower portion of the outer cylinder outer wall (8). A bottom end outlet of the outer cylinder (11) is connected with the top end of the dust tank (13) through an oily dust discharge valve (4). The cyclone separator for crude gas dust removal in crushed coal pressurized gasification has the advantages of being high in oily dust removal efficiency, free of wastewater generation, high in treatment capacity and high in operation flexibility.

The invention belongs to the technical field of polyolefin, and particularly relates to a method for preparing polyolefin through coordination polymerization in a micro-reactor. The method includes: letting an olefin monomer fluid, a main catalyst fluid and a cocatalyst fluid respectively enter the micro-reactor through shunting runners; arranging a micro-reaction runner of the micro-reactor in aconstant-temperature box and carrying out polymerization reaction; and collecting the polymerization liquid to obtain the polymer. According to the preparation method, the monomer and the catalyst canbe quickly mixed, the uniformity of a local reaction environment is controlled, and the problem of polymerization reaction retention time in the prior art is solved; the prepared polymerization product realizes excellent polymer performance and realizes high flux of polymerization. The olefin monomer concentration of the main reaction runner can be timely and effectively regulated, and the molecular structure and molecular weight of the polymerization product can be controlled. The micro-reactor polymerization technology provided by the invention is low in equipment investment, small in device size and safer and more flexible to operate; and the method is suitable for continuous production, small in amplification effect and suitable for industrial production.

The invention relates to the technical field of catalysts, and provides an organic contaminated soil thermal desorption waste gas catalytic oxidation purification catalyst and a preparation method and application thereof. The catalyst provided by the invention comprises a matrix, a carrier and active components, the matrix is honeycomb cordierite, the carrier is a CeO2-ZrO2 compound or a CeO2-ZrO2-R compound (R is one or more of La2O3, Co3O4, Y2O3 and SiO2), the active components are MnO2 and RuO2, and an auxiliary agent WO3-TiO2 is further loaded on the matrix. The catalyst provided by the invention has high catalytic efficiency in a temperature range of 450-650 DEG C, can completely convert organic contaminated soil thermal desorption waste gas, has good high-temperature stability, strong sintering resistance and carbon deposition resistance, and also has good alkali, alkaline earth and heavy metal resistance, chlorine resistance and sulfur poisoning resistance.