1660results about How to "Guarantee normal production" patented technology

The invention relates to iron coke for a blast furnace and a preparing method thereof. The iron coke comprises 5wt%-20wt% of iron ore powder and 80wt%-95wt% of mixed coal; the mixed coal is formed by mixing 25wt%-29wt% of one third of coking coal, 40wt%-44wt% of coking coal, 7wt%-11wt% of lean coal, 6wt%-10wt% of gas-fat coal and 12wt%-16wt% of fat coal; the iron ore powder and the mixed coal are mixed uniformly with water and tamped before entering the blast furnace, and are placed into the blast furnace when the temperature is 800 DEG C, the temperature is increased at the speed of 2 DEG C per minute to 3 DEG C per minute, the iron ore powder and the mixed coal are discharged from the blast furnace when the temperature is 950-1050 DEG C, and the iron coke is obtained by adopting a wet way of quenching the coke. According to the iron coke and the preparing method, the performance, the ratio, the particle size and the composition and the like of the iron ore powder and the mixed coal are optimized, and the strength and the reactivity of the iron coke can meet the requirement of the blast furnace process under the circumstance of not adding binding agents.

The invention discloses an electronic cigarette atomizer which is characterized by including a cigarette holder with a smoking hole and an atomizer body detachably connected with the cigarette holder, wherein the cigarette holder includes a cigarette holder body and a sealing part; the cigarette holder body is in threaded connection with the sealing part; the atomizer body includes an atomizing bin and a fixing base; the atomizing bin is in threaded connection with the fixing base. According to the electronic cigarette atomizer provided by the invention, air inlets are formed in the top of the electronic cigarette atomizer, which utilizes the theory that air inflows through the top of the atomizer to form air recirculation, and inner pipes inside the atomizer are connected with an atomizing core at the bottom of the atomizer in a sealing manner, so that liquid leakage of an electronic cigarette is avoided; a liquid guide structure is adopted for sucking nicotine liquid automatically from a liquid storage chamber, so that a large amount of external air enters an atomizing chamber, sufficient air is provided for the atomization of nicotine liquid, the nicotine liquid can be fully atomized to ensure that a large amount of smoke is generated, the dry burning problem caused by insufficient supply of nicotine liquid is avoided, and the service life of the atomizer is prolonged.

The invention relates to a mechanical recovery horizontal well preset produced fluid profile testing method and a special wellhead testing device thereof, mainly aiming at solving the problem of the downhole testing of a mechanical recovery horizontal well. The invention is characterized in that: the special wellhead testing device comprises an eccentric type tubing hanger body connected with a tubing string, wherein, the side wall of the tubing hanger body is divided into a body and splits which are completely matched with each other, and the splits are fixed on a locking arm which is fixed on the body though bolts; and a corresponding matched cable penetrating a channel is arranged at the splitting seam of the body and the splits, the channel is internally provided with a cable gasket, a spacer and a pressing cap. By being matched with a special wellhead support, under the condition that a testing cable and a tester are pre-arranged in the horizontal well to test a target layer, an oil pipe does not touch the cable during the up and down process of the oil pipe. The method and the special wellhead testing device can realize the produced fluid profile testing of the mechanical recovery horizontal well, and ensure the accuracy of normal testing and data of the mechanical recovery horizontal well with simple and reliable operation method.

The invention discloses a core SNP sites combination maizeSNP384 for building of a maize DNA fingerprint database and molecular identification of varieties, and an application of the core SNP sites combination. The invention provides applications of 384 SNP sites in any one of the following conditions: (1) building of the maize DNA fingerprint database; (2) detecting of the authenticity of maize varieties; (3) genetic analysis of corn germplasm resources; and (4) molecular breeding of maize, wherein the physical positions of the 384 SNP sites are determined by comparison on the basis of a whole genome sequence of the maize variety B73; the version number of the whole genome sequence of the maize variety B73 is B73 RefGen V1; and the 384 SNP sites are MG001-MG384. An experiment proves that the 384 SNP sites can be applied to building of the maize variety DNA fingerprint database, identification of the variety authenticity, dividing of germplasm resource groups, and other related researches.

The invention discloses a functional PVC (polyvinyl chloride) paste. The functional PVC paste comprises the following components: PVC paste resin, PVC doped resin, a plasticizing agent, a filling agent, a heat stabilizer, a light stabilizer, an antioxidant, a mildew-proof antibacterial agent, a gas-phase silicon dioxide and the like. A preparation method of the functional PVC paste comprises the following steps of: (1) stirring: firstly mixing and stirring a part of the plasticizing agent and a liquid component uniformly, then adding a solid component, stirring uniformly, finally adding coloring stock and the remaining plasticizing agent, and stirring uniformly, so as to obtain plasticized paste; (2) grinding: grinding the plasticized paste on a three-roll grinding machine; and (3) defoaming and ageing. The paste has the advantages that the viscosity stability is good; and the paste can remain low viscosity under the action of the shearing force of a scraper in the process of producing PVC coated fabric, so that the normal production of the PVC coated fabric is guaranteed, and the surface of the prepared PVC coated fabric is smooth without the phenomena of pin holes and the like.

The invention discloses a roadside packing gob-side entry retaining top-cutting explosion pressure relief method which comprises the following four steps: I, confirming a top-cutting method, the drilling construction time and a drilling construction site; II, confirming top-cutting pressure relief explosion drilling parameters; III, drilling deep-hole explosion holes and explosive filling and sealing holes; IV, performing explosion top-cutting pressure relief. The roadside packing gob-side entry retaining top-cutting explosion pressure relief method is applied to roadside packing gob-side entry retaining top-cutting explosion pressure relief.

A high-temp high-pressure artificial sand-controlling well wash for the oil well to recover thick oil by injecting steam is formed through pressure cracking of underground target stratus, high-pressure injecting of working liquid to form cracked seams in the stratum, carrying the quartz sand and refractory sand-controlling material into the seams by carrying liquid, closing the well and hydrating reacting to form a whole stratum.

The invention relates to a one-piece forming die with multiple functions, in particular to one-piece forming cup die for use in fields of blanking, stretching, raising, lettering, flanging and the like. In the technical scheme, the one-piece forming die with multiple functions comprises an upper die plate and a lower die plate, wherein a guide sleeve is fixed to the edge part of the upper die plate; a stretching male die is fixedly arranged on the middle part of the lower surface of the upper die plate; a punching block is arranged inside the bottom end part of the stretching male die; a flanging female die insert is sleeved outside the stretching male die; a blanking flanging female and male die is sleeved outside the flanging female die insert; an upper fixed plate is sleeved outside the blanking flanging female and male die; a punching rod is arranged in the stretching male die and the upper die plate in a sliding mode; and the bottom end part of the punching rod is connected with the punching block. By the one-piece forming die, products can be formed in one piece, so that the yield and quality of the products can be improved.

The invention relates to a large-range goaf group filling method and belongs to the technical field of mining engineering. According to the technical scheme, the method includes: dividing filling units, selecting filling material, and laying out filling pipes; calculating to determine the thickness of a filling retaining wall, performing site construction, reserving drain holes and filter holes in the filling retaining wall, and stacking a hillock inverted filter layer behind the filling retaining wall; laying filter pipes, allowing the filter pipes to extend out from the drain holes of the filling retaining wall; constructing a filling borehole, 133mm-150mm in diameter, at a highest point, applying the filling borehole as an overhead discharge point, ensuring roof contact, constructing the corresponding number of filling boreholes according to practical situation, and performing alternating filling. The large-range goaf group filling method has the advantages that filling process is simplified, filling efficiency is increased, plugging amount is decreased, filling amount is decreased, filling period is shortened, filling cost is lowered, and normal mine production is guaranteed.

The invention discloses a wax oil hydrogenated treatment and catalytic cracking combined method, which comprises the following steps of: performing hydrogenated reaction on hydrogenated treatment raw materials in the presence of hydrogen and hydrogenated treatment catalyst, performing gas-liquid separation on the hydrogenated reaction effluent, circulating the gas phase for the hydrogenated reaction, directly feeding the liquid phase into a catalytic cracking device without fractionation, and mixing dry gas and liquefied gas separated from the catalytic cracking reaction effluent, catalytic cracking heavy fraction formed by catalytically cracking gasoline and the hydrogenated treatment raw materials to perform hydrogenated reaction. Compared with the prior art, the method can produce maximum gasoline, meanwhile saves equipment investment, makes full use of reaction heat energy and reduces the production energy consumption.

A method for making multilaser radar be operated coordinately includes enabling each radar to finalize object blocking scan and dynamic weighted treatment of scanning data independently under coordination control of master controlling and processing module (MCPM), carrying out effectiveness verification on data collected by each radar in real time and stopping linear grogram of the radar as well as shielding its function if certain radar is fault, feeding radar state back to system sate display module, carrying out dynamic data treatment of error compensation and coordinate matching adaptively and finalizing scan and identification task of object multiple surfaces by MCPM according to system topological structure.

The invention relates to a roof contacting process in a goaf filling treating procedure and belongs to the technical field of mining engineering. The technical scheme of the roof contacting process in the goaf filling treating procedure includes: detecting a goaf to obtain the coordinate of the top point position of a top plate; drilling a filling drill hole at the top point position of the top plate, and performing cementing filling; installing a three-way plug valve on a filling pipe of the filling drill hole, and guiding a washing pipeline out on the filling pipe through the three-way plug valve; when the position with 1m away from the top point of the top plate is filled, extending the filling pipe to the position farthest from the filling drill hole, and simultaneously, arranging a 1-1.5m temporary retaining wall on the filling drill hole portion; when cement body is full, continuing to fill; and finally opening the three-way plug valve, guiding water away through the washing pipeline and finishing the filling roof contacting work. The roof contacting process is particularly suitable for filling the goaf generated during the filling exploitation process afterwards, is good in filling roof contacting effect and low in working intensity, saves filling roof contacting cost, achieves the roof contacting maximumly, is high in roof contacting efficiency, and ensures normal production of mines.

The invention discloses a pumping unit indicator diagram identification method based on an ART2. By collecting load and suspension center displacement signals of a pumping unit, a closed curve formed along with time changes in a pumping period is drawn with polished rod displacement signals serving as an x-coordinate and loading signals serving as a y-coordinate, and a pumping unit indicator diagram sample is obtained. If the category of the pumping unit indicator diagram sample is known, the pumping unit indicator diagram sample is identified through a mode with a supervision module. If the sample category of the pumping unit indicator diagram sample is unknown in advance, the pumping unit indicator diagram sample is identified through a mode without the supervision module. The pumping unit indicator diagram sample is identified through an ART2 neural network, according to an identification result, fault diagnosis and underground work condition judgment are performed on the pumping unit, and a judgment result is displayed. The pumping unit indicator diagram identification method based on the ART2 has the advantages of performing fault diagnosis and underground work condition judgment on the pumping unit, identifying the indicator diagram stably, efficiently and accurately, and the like.

The invention discloses a re-sintering meltdown quartz brick and the manufacturing method thereof, and solves the problem that the fire resisting material of the prior microlite glass melt kiln flame space position deforms and cracks due to the expansion and the shrinking under the temperature changing condition so as to damage the glass melt kiln. The re-sintering meltdown quartz brick of the invention comprises the components according to the following weight parts: meltdown quartz of 50 to 60 parts with granularity of 3 to 1 mm, meltdown quartz of 10 to 20 parts with granularity of 1 to 0 mm, mineralized powder of 1 to 2 parts and caking agent of 4 to 7 parts. The invention is suitable for the fire resisting material of the microlite glass melt kiln flame space position.

The present invention discloses a hydrogenation treatment catalyst and its preparation method. It is applicable to hydrogenation treatment of heavy oil, specially hydrogenation treatment of heavy fraction. Said catalyst is prepared by loading molybdenum, nickel and phosphorus on silicon-contained aluminium oxide carrier prepared by adopting a special method, and said silicon-contained aluminium oxide carrier is prepared by adding nano silicon-containing compound, for example nano silicon dioxide. As compared with existent catalyst it has higher activity for hydrodesulfurization and hydro-denitrification.

The invention discloses a low-carbon ultra-low sulfur steel smelting method. The method comprises the following technological processes: pouring molten iron into a tank, pretreatment of molten iron, oxygen remaining operation of a converter, RH furnace vacuum decarburization, alloying and vacuum degassing in an RH furnace, deoxidization of aluminium yarn/aluminium wire in an LF refining furnace, slagging by using lime and CCM. Through combination of molten iron desulphurization and drossing, optimization of a converter steel tapping and oxygen remaining system and a slagging system, the vacuum decarburization, alloying and degassing control in the RH furnace, and the aluminium wire diffusing deoxidation slagging and aluminium wire sediment deoxidation in the LF furnace, deep decarburization and desulphurization are carried out. With an emphasis on combination of convertor steel tapping and oxygen remaining operations, RH deep decarburization and LF furnace deep desulphurization, technical optimization is carried out; due to reasonable ladle argon bottom blowing control in the smelting process, carbon content control and metallurgical thermodynamics and dynamics conditions of desulphurization are given a full play; the RH furnace decarburization is stable; LF furnace slagging and desulphurization and recarburization control effects are obvious; and low-carbon ultra-low sulfur steel smelting is achieved.

The invention provides an ABS powder drying method, comprising a step of powder drying and a step of powder recovery. In the step of powder drying the technology of utilization of waste heat of condensed water comprises conveying the steam condensed water in a nitrogen heater to a buffer hot water tank as heating medium hot water in a heater. A slurry recovery tank is connected to a bottom portion of a washing tower. The upper portion diameter of the washing tower is slightly bigger than the bottom portion diameter. No filling material and no tray floor are arranged inside the washing tower. The washing tower is provided with a demister, and second spray water in the upper portion of the washing tower. A split-range controller is arranged on the top portion of the washing tower. A first fire extinguishing device is installed in a fluidized bed dryer. A second fire extinguishing device is installed at the exit port of a cyclone separator. An oxygen detector is installed at a nitrogen inlet side of the nitrogen heater. The method of the invention has the advantages of full utilization of the waste heat, energy saving and consumption reduction, heat utilization efficiency improvement, short process flow, reduction of powder loss, reduction of equipment investment, high operation flexibility and stability in the whole technology process, a good ABS separating effect, and good safety performance.

The invention discloses a method for simultaneously preparing pure hydrogen and pure carbon monoxide by gasification without desorbed gas circulation. The crude synthetic gas prepared by the gasification unit is divided into two parts, one part is used for preparing pure carbon monoxide, and the other part is preparing pure hydrogen. The process of preparing pure carbon monoxide is divided into two parts: one part is used for preparing pure carbon monoxide with the crude synthetic gas prepared by gasification by a heat recovery unit, a low temperature methanol washing I unit, and a cryogenic separation unit; and the other part is used for preparing pure carbon monoxide by the hydrogen rich gas from the outlet of the cold box of the cryogenic separation unit sending into a PSA-CO unit. The feedstock of preparing hydrogen is divided into two parts: one part is the converted gas which is purified by a conversion unit and a low temperature methanol washing II unit with the crude synthetic gas prepared by gasification and contains carbon monoxide -1% (mol), and the other part is the hydrogen rich gas from a resurgent TSA device of the cryogenic separation unit, and the two parts of the gas are mixed and sent into the PSA-H2 unit to prepare pure hydrogen. The method has high recovery rates of carbon monoxide and hydrogen, has no desorbed gas circulation and no resurgent gas introduced by environment, has small investment and low energy consumption, and can adjust product gas scale of hydrogen and carbon monoxide flexibly.

The invention discloses new correcting method and device of a metal conveyor belt, belonging to the correction field of mechanical devices. In the invention, by adopting a correction mode of a permanent magnet or an electromagnet, the conveyor belt is limited in deviation by magnetic force or the deviated conveyor belt is pulled back to a normal track, i.e. grooves or convex edges are arranged at two ends of a driving roller of the metal conveyor belt, magnetic correcting devices with magnetism opposite to or same as that of the corresponding sides of the metal conveyor belt are arranged on two inner sides of the grooves or the convex edges, two sides of the metal conveyor belt are folded into folded edges with the depth corresponding to the depths of the grooves or the convex edges or small magnets are arranged at intervals on two sides of the metal conveyor belt so as to increase the magnetic action and strengthen the magnetic action effect. The invention is simple and feasible, effectively overcomes the defects of side deformation and cracking of the metal conveyor belt caused by the deviation in the background art and ensures normal production.

The invention provides a process for producing liquefied natural gas, which comprises the following steps of: introducing purified feed gas into a first heat exchanger for precooling; introducing the precooled feed gas into a heavy hydrocarbon separator for gas-liquid separation; introducing the separated gaseous fluid into a second heat exchanger, and liquefying to obtain liquid-state fluid; and depressurizing and throttling to obtain the liquefied natural gas, wherein a refrigeration cycle consists of two independent mixed working medium refrigeration cycles in a high temperature area and a low temperature area; the feed gas can pass through a reversing heat exchanger to enter the first heat exchanger; and the separated heavy hydrocarbons and BOG return to the heat exchanger for reheating. In the process, the energy consumption is low; each mixed working medium refrigeration cycle is controlled by only one throttle valve in a cold box, and the operation is simpler; due to the reversing heat exchanger, the production process is more stable and safe; and the cold quantity of the separated heavy hydrocarbons and BOG is fully recycled and discharged out of the cold box, and the energy consumption is reduced.

The invention provides a hot-dipped Al-Zn no-Co passivation steel plate, which is characterized in that the steel plate is provided with a film which uses fluoro acid salt and oxygen chlordimeform-hydrochloride of third and fourth subgroup elements as a main film forming agent and combines with the passivation disposal of compounds containing phosphorus. The invention also provides a passivation process used for the hot-dipped Al-Zn no-Co passivation steel plate, comprising a roll plating and solidifying process or a spraying, dry extruding and solidifying process.