454results about How to "The method flow is simple" patented technology

This invention discloses a hydrogenation method for producing low-sulfur diesel oil. The method comprises: mixing base oil with hydrogen, introducing into a hydrogenation reactor to orderly contact hydrogenation protecting agent, hydrorefining catalyst I, hydrorefining catalyst II and freely selected hydrorefining catalyst III for reactions, cooling the effluent, and separating to obtain hydrogen-rich gas and liquid product. With the synergism of the catalysts, the whole catalyst activity is improved. By the method, high-sulfur, high-nitrogen and high-metal content diesel oil fraction can be treated under mild conditions, and low-sulfur diesel oil that can meet Europe III standard and Europe IV standard can be obtained. The method has such advantages as simple process, low operation pressure, low apparatus investment and low operation cost.

The invention belongs to the technical field of automobile manufacturing and discloses a device and process for machining a differential housing. The device is composed of a rotary jig, an internally-expanding lathing jig and a spherical surface lathing jig, wherein the rotary jig is arranged on a machining center and comprises an operation part with the two ends arranged on the machining center through rotating assemblies, and the internally-expanding lathing jig and the spherical surface lathing jig are arranged on a common numerically-controlled lathe. Synchronous machining of two parts can be achieved through the high-precision rotary jig when the machining center is used for machining various axial inner holes, and therefore efficiency is higher; a high-precision numerically-controlled indexing table is applied to the jigs, rotating accuracy is as high as 20'' or higher, and precision of the critical size of a product is better guaranteed; the parts can be automatically clamped and dismounted by the jigs through numerical control programs, and therefore labor can be saved.

The invention discloses a hydrogenation and refining method of gasoline with poor quality, comprising the following steps: the base oil of gasoline contacts and reacts with hydrogenation protective agent at low temperature; after reaction effluent is mixed with circulation oil, the mixture sequentially contacts and reacts with hydrogenation desilication solvent and hyrorefining catalyst at high temperature; the reaction product is cooled and separated to obtain hydrogen-rich gas and refined gasoline fraction; and parts of refined gasoline fraction serves as circulation oil to return to the outlet of a first hydrogenation reaction area. The method can handle coker gasoline with high content of sulphur, nitrogen and olefin, and refined gasoline fraction can satisfy charging requirements of reforming pre-hydrogenation devices and steam cracking ethene preparing devices. The method of the invention can effectively slow coking speed of heating furnace tubes, greatly lowers pressure drop generation frequency of a main hydrogenation reactor, improves the operating severity of the main hydrogenation reactor and retards the deactivation speed of catalyst at the bottom of a refined reactor.

The invention provides a purification method of an organic waste gas, in particular to a purification method of organic water gases containing aldehydes, ethylene glycol, PTA dust and so on, polyester waste gas processing method for example. After being discharged from the discharge port, polyester waste gas firstly enters into an adsorption homogenization tank filled with porous solid adsorbent, and then is processed catalytic combustion treatment. In adsorption homogenization tank, the components of ethylene glycol and so on are fully absorbed, and the PTA dust is filtrated, and at the same time the concentrations of components of aldehydes and so on are homogenized under adsorption-desorption effect. The concentration homogenized waste gas enters into catalytic combustion reactor, and is totally oxidized into carbon dioxide and water under the effect of catalyst, and standard-met discharge is achieved. The function of the special typed active carbon used in the invention is not condensation but adsorption, filtering and homogenizing. The invention can prolong the service life of catalytic combustion catalyst, has good purification effect, safe and stable arrangement.

This invention discloses a method for producing low-sulfur low-arene diesel oil. The method comprises: mixing base oil and hydrogen, introducing into a hydrogenation reactor, reacting in the first hydrogenation region by contacting hydrorefining catalyst I, directly introducing the reaction product into the second hydrogenation region without separation, reacting by contacting hydrorefining catalyst II, cooling and separating the reaction product to obtain hydrogen-rich gas and liquid substance, circulating the hydrogen-rich gas for repeated use, introducing the liquid substance into a fractionating system, fractionating to obtain crude gasoline fraction, light diesel oil fraction and heavy diesel oil fraction, introducing part or all of the heavy diesel oil fraction bake to the hydrogenation reactor. By the method, high-sulfur, high-nitrogen and high-metal content diesel oil fraction can be treated under mild conditions, and clean diesel oil (with low sulfur content and low arene content) can be obtained. The method has such advantages as simple process, low operation pressure, low apparatus investment and low operation cost.

The invention relates to a production method for ultra-low sulfur diesel oil; wherein, after mixed with hydrogen, straight-run atmosphere 3rd side cut distillate and (or) diesel oil heavy distillate enter(s) a first hydrogenation reaction zone and reacts under the action of hydro-upgrading catalyst and hydrofining catalyst; after mixed with the reaction effluent of the first hydrogenation reaction zone, straight-run atmosphere 2nd side cut distillate and (or) diesel oil light distillate enter(s) a second hydrogenation reaction zone and reacts under the action of the hydrofining catalyst; the reaction effluent of the second hydrogenation reaction zone is cooled, separated and distilled to obtain naphtha fraction and diesel products. The method provided by the invention can treat the diesel distillate with high sulfur, high nitrogen and high final boiling point, and under mild operating conditions, obtain clear diesel products with low content of sulfur and polycyclic aromatic hydrocarbons as well as high cetane number; meanwhile, the product quality can reach the indexes of the IV European emission standard.

The invention belongs to the technical field of video monitoring and discloses an intelligent red light running identifying system which is characterized by comprising a data collection sub-system, a communication network sub-system and a central management sub-system, wherein the data collection sub-system is used for video stream collection, traffic light state detection, motor vehicle traffic violation behavior detection, traffic violation picture capturing, fill light control, local storage of traffic violation records and network uploading task of related information. The invention also discloses a vehicle behavior detecting and capturing method which is characterized by comprising the following steps: acquiring a camera video sequence; carrying out foreground area detection; carrying out vehicle detection; carrying out vehicle tracking; judging whether the vehicle reaches the trigger line position or not; and if so, sending a trigger signal. In the invention, the intelligence level of electronic traffic management is raised, the efficiency of traffic violation vehicle detecting, identifying and capturing is improved, and intelligent integration of collection, identifying and recording in electronic traffic management can be realized.

The invention provides a green method for recycling lithium in cathode materials, and the method comprises the following steps of 1, using cathode materials containing lithium and mixture of weak base and water as the reaction raw materials, carrying out reaction at the temperature of 5 DEG C-90 DEG C and at the pressure of 0.2 MPa-1.0 MPa, proceeding liquid-solid separation on the materials remaining after the reaction and then obtaining lithium and residue; 2, carrying out postprocessing on the extraction solution of lithium to obtain lithium carbonate. The green method for recycling lithium in cathode materials has simple procedures and green reaction process, during which, the leaching efficiency of lithium is larger than 95 WT%, the purity of lithium carbonate is larger than 98.5 WT%, and the impurity content satisfies national standard GB/T11075 2013.

The present invention relates to preparation process of core-shell material and hollow material, and is especially water phase one-step synthesis process for preparing nanometer crystallized anatase type titania material in core-shell and hollow structure. Water soluble titanium peroxide precursor is treated through a sol-gel process so as to coat a nanometer titania layer onto the surface of polystyrene, and the nanometer titania layer in the shell is crystallized directly at relatively low temperature to form nanometer anatase type titania without needing sintering. Furthermore, the precursor may be controlled properly, so that the polystyrene core serving as the template may be dissolved spontaneously after the shell is formed and crystallized and nanometer hollow titania may be obtained directly in water phase. The present invention is simple, easy to operate, low in cost and suitable for batch production, and may find wide application in different aspects.

The invention discloses a preparation method of low-apparent-density copper tin alloy powder for a micro oil-retaining bearing, and belongs to the technical field of copper tin alloy powder for the micro oil-retaining bearing. The alloy powder comprises the following component phases in percentage by weight: 65-95 percent of Cu and 5-35 percent of Sn. The preparation method comprises the following steps of: after atomized pulverizing of the copper tin alloy, dynamically oxidizing the prepared alloy powder; and then obtaining the alloy powder with proper apparent density by using a high-temperature hydrogen reduction technology. The method has a simple flow, low equipment investment and high technical content; the copper tin alloy powder is not mechanically mixed so as to easily cause the phenomenon of segregation during use and storage; meanwhile, the specific surface area of the powder is increased; and the press sintering performance of the powder is improved. The prepared alloy powder is particularly suitable for producing the micro oil-retaining bearing.

The invention discloses a method for beneficiating high-peat copper sulphide ore and relates to a method for beneficiating nonferrous metals, which specifically relates to a method for beneficiating high-peat copper sulphide ore; regulating agent and composite inhibitor are added before floating ore pulp and after graining raw ore; flotation environment and mineral surface state in ore pulp are improved in the method disclosed by the invention; the inhibition capacity of inhibitor on easily-floated gangue mineral and selective collection of collecting agent on mineral are enhanced; compared with the traditional method for beneficiating pre-deslimed peat, a technical procedure is simplified by the invention; the loss of available mineral caused by pre-deslimed peat is avoided; and the recycle rate of copper is increased by about more than 18%.

The invention discloses a control method for segregation and net carbon of an 86-grade high-strength cord steel wire rod. The control method comprises the following steps of: KR molten iron pre-desulfurization, BOF converter smelting, LF furnace refining, continuous casting CC, casting blank surface treatment, casting blank heating, controlled rolling and controlled cooling procedures which are carried out in sequence. The 86-grade high-strength cord steel wire rod comprises the following components in percentage by weight: 0.85-0.90% of C, 0.15-0.35% of Si, 0.40-0.60% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, less than or equal to 0.010% of Cr, less than or equal to 0.005% of Al and the balance Fe. According to the control method, the segregation and netcarbon of the wire rod are improved by combining continuous casting of small square billets with wire rolling, the period and cost are greatly reduced, the sorbitizing rate of the prepared wire rod is larger than or equal to 90%, the center segregation of the wire rod is slight, no net-shaped cementite exists in the center, and the drawing use requirements of users are met.

The invention provides a dissolving method with Bayer process, relating to a preparation method used in the dissolving process, in which diasporic bauxite is used as a raw material and aluminum oxide is produced with Bayer process. The invention is characterized in that: in the dissolving process, sodium ferrate, lime and the lye is added into bauxite, the amount of sodium ferrate and lime is calculated according to silicon content in bauxite which can be completely changed into molten iron garnet(3CaO.Fe2O3.nSiO2.(6-2n)H2O); the lye concentration NK is 100g/L to 450g/L, aluminium oxide concentration is less than 5g/L, the solid content of the dissolved preparation ore pulp is 50g/L to 300g/L, the temperature is 80 DEG C to 180 DEG C the dissolving time is 0.5 hour to 12 hours., and then the solid and the liquid are separated, the solid is dissolved in the condition of the conventional Bayer process. Through the invention, the existing form of silicate mineral of the dissolved red mud is mainly molten iron garnet instead of the usual sodium-silicon residue. The invention reduces the alumina-silicon ratio A/S and the sodium-silicon ratio N/S of the dissolved red mud. The invention is adapted to process diasporic bauxite source of Chinese high alumina-silicon.

Disclosed is a method for production of ultralow-sulfur diesel oil. Raw oil of diesel oil fraction enters a reactor from the top, make-up hydrogen and circulating hydrogen are mixed and then enter the reactor from the bottom, the raw oil of diesel oil fraction sequentially contacts a hydrofining catalyst I and a hydrofining catalyst II for reaction under the hydrofining reaction conditions, and the reaction products are separated and fractionated to obtain diesel oil product. The hydrofining catalyst I is a loaded hydrofining catalyst using nickel-molybdenum or nickel-molybdenum-tungsten as active metal component, and the hydrofining catalyst II is a bulk hydrofining catalyst. The invention can solve the problems of harsh operating conditions and low space velocity in prior art.

The invention discloses a method for extracting and separating valuable metal from secondary lead smelting slag. The method includes the steps that a certain amount of oxidizing agent is mixed in the secondary lead smelting slag to be treated; after a certain amount of NaOH solution is added, leaching treatment is conducted in a stirring mill; pulp obtained through leaching treatment is subjected to solid-liquid separation, and filter residues rich in lead and antimony and filtrate rich in tin and arsenic are obtained after washing; the obtained filtrate rich in tin and arsenic is subjected to impurity purifying treatment, and a sodium stannate solution is obtained; and the obtained sodium stannate solution is condensed and crystallized to obtain a sodium stannate product. The method is simple in process and easy to adopt, valuable metal such as tin, antimony and arsenic can be directly separated under the alkaline condition, a qualified sodium stannate product is obtained through subsequent purifying and impurity removing, and the recycling rate of the valuable metal is increased.

This invention relates to the casting rare earth magnetism alloy micro-arc oxidation dealing method with high intensity. This invention has follows steps: (1) Preparing electrolyte; (2) preprocessing SJDM-1 high -intensity casting rare earth magnetism alloy; (3) micro-arc oxidation; (4) after-processing SJDM-1 high -intensity casting rare earth magnetism alloy. the ceramic film thickness can get to 10-50um,the erosion resistance is well, if the reaction time prolongs for 30-60 min, then the ceramic film thickness can increase to 150, which improves the ceramic surface rigidity up to 500Hv. This invention has broad application value especially in the filed that needs light and good erosion-bearing material.

The invention provides a flat panel detector and a method for eliminating image persistence of vision of the flat panel detector. The method comprises that 1) the flat panel detector is used for exposure, a frame of original bright-field image and a frame of original dark-field image are collected, and a collection time point t1 of the original bright-field image is recorded; 2) the flat panel detector is used to continue exposure, another frame of original bright-field image and another frame of original dark-field image are collected, and a collection time point t2 of the original bright-field image is recorded; 3) according to a natural attenuation rule of the image persistence of vision as well as a time interval between t1 and t2, a weighting coefficient is obtained; and 4) the weighting coefficient obtained in the step 3) is used to compensate the original dark-field image collected in the step 1), and then implement persistence of vision correction on the original bright-field image collected in the step 2) by difference operation. The method of the invention is simple in process and simplified in algorithms, is highly practically and is high in the system integrated level.

The invention relates to an indoor navigation positioning method, a system, a to-be-positioned device and anchor nodes. The method comprises the following steps: simultaneously sending a radio frequency signal and an ultrasonic signal to the anchor nodes distributed along different directions by the to-be-positioned device, and then calculating distances between the to-be-positioned device and the anchor nodes and generating position information of the to-be-positioned device, according to the time difference of the received radio frequency signal and ultrasonic signal and the ultrasonic transmission rate. Compared with the prior art, the indoor navigation positioning method, the device and the system thereof provided by the invention have the advantages of simple and easy operation, low power consumption, high positioning precision, large navigation area and low cost.

The invention provides a method for extracting lithium from clay containing lithium. The method for extracting the lithium from the clay containing the lithium includes the steps that (1) the clay containing the lithium, calcium carbonate, sodium sulfate, and potassium sulfate are mixed to obtain a paste after adding water; (2) the paste is ground to obtain a ground material; (3) the ground material is made into a plurality of spherical materials; (4) the spherical materials are put into a furnace and roasted to obtain a roasted material; (5) the roasted material is crushed to obtain a crushedmaterial; (6) the crushed material and pure water are mixed and stirred for leaching to obtain a leached solution; (7) the leached solution is filtered to obtain a clay leached solution. The method for extracting the lithium from the clay containing the lithium fires the clay containing the lithium, the calcium carbonate, the sodium sulfate, and the potassium sulfate in a certain proportion, which is simple in technique, low in cost, high in recovery of the lithium, simple in impurity removal and no pollution in later stages.

The invention belongs to the technical field of polymer materials, and discloses ABS (Acrylonitrile-Butadiene-Styrene) resin and a preparation method thereof. The ABS resin comprises the following components in parts by weight: 80-40 parts of ABS resin, 20-60 parts of polymethacrylate, 1-6 parts of compatilizer, 1-5 parts of scratching-resistant agent, 0.1-1 part of main antioxidant, 0.1-1 part of auxiliary antioxidant, and 0.1-1 part of lubricant. The preparation method of the ABS resin comprises the following steps of: firstly adding the ABS resin, polymethacrylate, compatilizer, scratching-resistant agent, main antioxidant, auxiliary antioxidant, and lubricant to a high-speed stirrer for uniformly mixing, after mixing is finished, conveying the materials to a double-screw extruder by a precision metering conveying device, sufficiently fusing the materials under the shearing, milling and conveying of the screws, finally extruding, drawing and cooling to obtain granules. The high-luster scratching-resistant ABS resin not only retains the original excellent performances of the ABS resin, but also has the outstanding advantages of high luster, environmental friendliness, scratching resistance and the like.

The invention provides a method of preparing a vanadium-containing clinker by using TiCl4 refined tailings. The method comprises the steps of carrying out water soaking treatment on the titanium tetrachloride refined tailings, controlling the mass ratio of water and the titanium tetrachloride refined tailings no less than 10:1, and then carrying out solid-liquid separation; uniformly mixing a solid obtained after solid-liquid separation and a sodium-containing additive according to the mass ratio of 100:(17-21), wherein the sodium-containing additive comprises alkali or slat of sodium; and roasting a mixture of the solid and the sodium slat in the air environment at the temperature of 780-900 DEG C, and cooling to obtain the water-soluble vanadium-containing clinker. The method has the advantages that the method and procedure are simpler, subsequent water soaking and vanadium precipitating devices does not need to be established, the investment is little, and the production cost is low; with the adoption of the process, the vanadium yield is high (for example, the vanadium yield can reach above 90 percent), the quality of the prepared vanadium-containing clinker is high, and the application condition is wide; and the titanium tetrachloride refined tailings with the characteristic of high pollution can be effectively utilized.

The invention discloses a copperizing solvent and a preparation method thereof, belonging to the technical field of powder metallurgy. The copperizing solvent comprises the following components in percentage by weight: 0.5-10% of one or a plurality of Fe, Zn, Mn, Sn, P and Cr, and 90-99.5% of Cu The preparation method is as follows: weighting raw materials at ratio, adding ceramic balls or stainless steel balls and diffusion accelerating agent; after mixing, sending powder into a hydrogen reduction furnace for diffusion at the diffusion temperature of 300-1000 DEG C for 0.5-25h; cooling, discharging, breaking, screening and collecting; and adding lubricant for blending. The copperizing solvent prepared with the preparation method has the characteristics of favourable forming property, high infiltration efficiency, no erosion and small residue and obviously improves material density and mechanical property. The method has simple flow, required equipment is easy to operate and the coppering solvent can be produced in batch.

The invention relates to a metal aluminum-silicon phosphate molecular sieve MeAPSO-41; the water-free chemical formula of the molecular sieve is nMe(SixAlyPz)O2, wherein, n is the mole number of the metal corresponding to the (SixAlyPz)O2 per mole, and x, y and z respectively represent the molar fraction of silicon atom, aluminum atom and phosphorous atom, and n is equal to 0.001 to 0.60, x is equal to 0.001 to 0.60, y is equal to0.001 to 0.70, z is equal to 0.001 to 0.70, and x plus y plus z is equal to 1. The MeAPSO-41 molecular sieve has good water heating stability, and can be used as the ion exchanging agent and the absorption agent, and also can be used for catalyzing the transforming reaction of the hydrocarbon. The molecular sieve is synthesized in the method: aluminum source, silicon source, phosphorous source and the template agent are mixed to gel; AFO structural molecular sieve is adopted as the inoculating crystal; the mixture is heated in the water and crystallized more than one hour at the temperature of 110 to 250 DEG C; during the crystallization process, the mixture is added with metal oxide to produce the reaction compound with the mole compositions of aR2:Al2O3:bP2O5:cSiO2:dMeOx:eH2O, wherein, a is equal to 0.05 to 2.5, b is equal to 0.1 to 2.0, c is equal to 0.01 to 1.5, d is equal to 0.01 to 1.0 and e is equal to 5 to 150; after the crystallization is completed, the product is recycled. The method has simple flow procedures, consumes less template and has low cost.