23results about How to "Improve operating rate" patented technology

The invention discloses a tundish cover castable, and relates to the technical field of tundish refractory materials. The tundish cover castable is prepared from the following raw material components in percentage by mass: 7.8 to 9.6 percent of alumina of 8 to 5mm, 2.6 to 4.3 percent of alumina of 5 to 3mm, 2.6 to 4.3 percent of alumina of 1 to 0mm, 17.4 to 20.8 percent of alumina of 200 meshes, 9.6 to 13 percent of mullite of 5 to 3mm, 22.6 to 26 percent of mullite of 3 to 1mm, 9.6 to 13 percent of mullite of 1 to 0mm, 7 to 8.7 percent of mullite of 200 meshes, 2.6 to 3.5 percent of composite binding agent, 0.8 to 1.7 percent of aluminum silicate, 0.05 to 0.07 percent of SiC nanowire, 0.2 to 0.3 percent of aluminum titanate and the balance of water. The invention discloses a tundish cover castable which comprises the following components in percentage by weight: 0.4-0.7% of alumina micro powder, 0.08-0.11% of sodium tripolyphosphate, 2.6-3.5% of silica fume, 0.87% of steel fiber and 1.3-1.7% of high-alumina cement. Compared with a traditional process, the tundish cover castable has the advantages that the overall performance of the tundish cover castable is remarkably improved, the breaking strength and compression strength of the castable are effectively enhanced, the service life is remarkably prolonged, and the production cost is reduced. And the production cost is greatly saved, and the economical efficiency and the operation rate of continuous casting operation are improved.

The present invention provides a management device, a management method, and a mobile body capable of improving the operational efficiency of a mobile body. The management device (10) includes a control unit (12) for managing a mobile body (60) configured to accommodate a mobile body (40). The mobile body (40) includes a first mobile body accommodated within the mobile body (60) and a second mobile body not accommodated within the mobile body (60). The control unit (12) instructs the mobile body (60) to simultaneously maintain and transport the first mobile body.

Raw ore is extruded and crushed through a high-pressure double-roller machine and sieved through a linear sieve, then the raw ore is fed into a coarse grain magnetic separator for ore dressing and tailing discarding, and obtained rough concentrate is subjected to ore dressing and tailing discarding through a two-stage ore grinding-magnetic separation-rotational flow classification circulation process. And the obtained second-section overflow product is subjected to dewatering screen and concentration magnetic separation to obtain concentrated iron ore concentrate pulp, the concentrated iron ore concentrate pulp is subjected to ore grinding through a moxa sand mill and then elutriation, high-grade total iron ore concentrate is obtained, elutriation overflow water returns to a linear screen to be reused, and tailings in the technological process are subjected to rotational flow classification, dewatering or concentration and filter pressing to form different tailings products. By adjusting the sequence of magnetic separation and rotational flow classification and adding the moxa sand milling procedure and the tailing treatment procedure, the method has the characteristics of simple process flow, large treatment capacity, segmented tailing discarding, low production cost, high grade of total iron ore concentrate, high comprehensive utilization rate of tailings, environmental friendliness and the like, and the utilization value of ultra-lean, fine and miscellaneous magnetite is greatly improved.

The utility model relates to an automatic lubricating device for reducing the failure rate of a plate-and-frame filter press, which belongs to the technical field of water treatment and comprises an oil storage device, an oil guide pipe, an oil quantity regulating valve, an oil filling pipe, a sealing cover and an oil tank. The top of the oil storage device is provided with an oil filling pipe, the bottom of the oil storage device is provided with an oil guide pipe, the oil guide pipe is provided with an oil quantity adjusting valve, and the oil guide pipe is connected with a sealing cover matched with the hole diameter in size. The right side of the sealing cover is provided with a hole for a chain to penetrate, and the bottom of the sealing cover is provided with an oil pipe connected with an oil tank for storing redundant lubricating oil. According to the utility model, the gear and the chain are automatically lubricated during the operation of the plate-and-frame filter press, the problems of high failure rate of the plate-and-frame filter press and oil shortage of the plate-and-frame chain are solved, the stuck failure rate of the gear and the chain of the plate-and-frame filter press is effectively reduced, the equipment operation rate of the whole sewage treatment system is improved, and the service life of the whole sewage treatment system is prolonged. A guarantee is provided for keeping the water balance state of the wastewater.

The invention discloses an aluminum oxide evaporation multi-stage flash tank control method based on model control, and the control method is used for stably and accurately controlling the temperature difference, liquid level and pressure parameters of each stage of flash tank in an evaporation process. The MPC model predictive control system intelligently analyzes the change of multi-parameter data to realize the output of control data, and module combination application can be carried out on different evaporation technological processes through a universal evaporation multistage flash tank MPC control module. Through a universal evaporation multistage flash tank MPC control module, a control method that a flash tank only controls a single parameter liquid level in a traditional method is changed into liquid level, temperature and pressure multi-parameter cooperative control. According to the method, the influence of multiple parameters on the flash evaporation intensity is considered, the problems that the aluminum oxide evaporation multi-stage flash evaporation tank is large in control fluctuation and prone to scabbing are solved, the control precision can be improved, the recovery amount of secondary steam is more stable, local concentrated scaling is avoided, and the equipment operation rate is increased.

Provided is an evaluation device 100 that evaluates performance of a predetermined object to be evaluated (W) by varying a temperature condition. The evaluation device 100 comprises a heating furnace 1 having a furnace inner space 1s that houses the object to be evaluated (W), a temperature adjusting mechanism (C) that adjusts a temperature of the object to be evaluated (W) or its surroundings by heating or cooling, a temperature acquisition unit 34 that acquires the temperatures of a plurality of locations of the object to be evaluated (W) or its surroundings, and a temperature adjusting mechanism control unit 35 that controls the temperature adjusting mechanism (C) to keep an absolute value of a temperature difference between the temperatures of a plurality of the locations acquired by the temperature acquisition unit 34 lower than or equal to a predetermined value.

This utility model discloses a high-efficiency ore crushing and desliming system, including a raw ore stockpile, a heavy plate feeder, a jaw crusher, a four-layer linear vibrating screen, a first cone crusher, a single-layer vibrating screen, a second cone crusher, a second slurry tank, a second slurry pump, an intermediate stockpile, a ball mill, a first slurry tank, a first slurry pump, a first hydrocyclone, a third slurry tank, a third slurry pump, a second hydrocyclone, a thickener, and a fourth slurry pump. This utility model is designed for the development of high-mud ore in tropical rainforest regions. It can significantly improve the efficiency of ore crushing and conveying, enhance equipment uptime, and ultimately achieve the separate production of ore slime, which can be independently fed into a carbon leaching system. This improves the beneficiation indicators of high-mud gold ore and is of great significance for the efficient development of difficult-to-process high-mud ore in tropical rainforest regions. It also provides important reference for the crushing and development of similar ores.

This disclosure relates to the field of winding machine drum replacement fixture technology. One embodiment of this disclosure provides a winding machine drum replacement fixture, which includes a fixed base, multiple fixing screws on both sides of the fixed base, a V-shaped bracket, a clamping frame, a clamping plate, a clamping mechanism, a connecting frame, and a buffer-type pressing assembly. The V-shaped bracket is installed on the upper side of the fixed base and is used to support the drum. Multiple clamping frames are installed on the inner side of the V-shaped bracket, and the multiple clamping frames are symmetrically arranged. The clamping plate is inserted into the inside of the clamping frame and can move vertically inside the clamping frame. The clamping plate is used to limit the movement of the drum. The clamping mechanism is installed on the outer side of the clamping frame and is used to clamp the clamping plate. The connecting frame is installed on the upper side of the clamping plate and moves synchronously with the clamping plate. The above technical solution is used to solve the technical problem of excessively long maintenance and repair time in the winding area of ​​the prior art.

The utility model discloses an automatic cleaning system for mechanical vacuum pumps in the field of polyester staple fiber spinning, which comprises a reaction kettle and a plurality of mechanical vacuum pumps sequentially connected end to end, and an air inlet at the end of an air inlet pipe of the mechanical vacuum pump at the head end is connected with the inside of the reaction kettle. An exhaust port of each mechanical vacuum pump located at the front end is connected with an air inlet in the end of an air inlet pipe of the mechanical vacuum pump located at the rear end through a connecting pipe, the side face of the air inlet pipe of each mechanical vacuum pump located in front of the mechanical vacuum pump located at the tail end is provided with an air inlet branch pipe, and each air inlet branch pipe is connected with the interior of the cleaning cylinder through a cleaning pipe. A cleaning agent is contained in the cleaning cylinder, and an electromagnetic valve is arranged on the cleaning pipe. According to the mechanical vacuum pump, the pump body can be regularly and conditionally cleaned irregularly through the cleaning system, pump blades are kept clean, the service life of the mechanical vacuum pump is prolonged, the operation rate of equipment is improved, and therefore the production cost is reduced.

The invention discloses a power station whole plant AVC and unit PID logic optimization method and system under a weak power grid, and the method comprises the steps: optimizing whole plant AVC control parameters to deal with system oscillation, reactive power, voltage jump and other external conditions under the weak power grid, and effectively reducing the whole plant AVC abnormal exit frequency caused by the power grid. The whole-plant AVC operation rate and reliability are improved, and the human intervention frequency of a whole-plant AVC control mode is reduced so as to improve the operation on-duty efficiency; the reactive PID control parameters of the unit are optimized to limit the outlet voltage of the unit, so that the purpose of limiting the voltage of a high-voltage bus within an overvoltage tripping constant value range is achieved; by adding a reactive power sudden change over-fast backward reactive PID function of a unit, unit reactive PID error adjustment and whole plant voltage error adjustment under extreme working conditions of large sudden change or oscillation of a power grid and abnormal backward of whole plant AVC are prevented.

The utility model discloses a kind of friction polygranulator grinding head positioning control mechanisms in the field of spandex staple waste silk processing, including shell, adjusting pivot is provided in shell, the end of adjusting pivot extends shell, the part of adjusting pivot extension shell is equipped with transmission wheel one, the top of shell is provided with rotary drive mechanism, the output of rotary drive mechanism is equipped with transmission wheel two, transmission wheel two is transmission connection with transmission wheel one by transmission part, mounting bracket is connected on the shell, encoder is installed on adjusting pivot corresponding mounting bracket, the extension end of adjusting pivot is transmission connection with encoder. The utility model uses the mode of encoder digital positioning to determine grinding head position, avoid the damage of equipment caused by too small grinding head gap, to reach the purpose of stable production.

The invention discloses a cement vertical mill parameter adjustment system and method based on PLC control, belonging to the technical field of cement vertical mills, comprising: a DCS unit, the DCS unit comprising a first adjustment button; a PLC control unit, the PLC control unit is communicatively connected with the DCS unit, and the PLC control unit further comprises: a first parameter adjustment module, the first parameter adjustment module is used to adjust the air intake volume of the cement vertical mill equipment; a second parameter adjustment module, the second parameter adjustment module is used to adjust the rotation speed of the cement vertical mill equipment; a third parameter adjustment module, the third parameter adjustment module is used to adjust the forward pressure of the cement vertical mill equipment; and a fourth parameter adjustment module, the fourth parameter adjustment module is used to adjust the reverse pressure of the cement vertical mill equipment, thereby achieving the technical effect that the system can instantly and automatically adjust various relevant parameters of the mill, realize the stabilization of the mill, avoid the situation of lifting the roller or even tripping and stopping the main motor of the mill, and improve the equipment operation rate.

The invention relates to a desulfurization wastewater waste heat evaporation treatment system and method.The desulfurization wastewater waste heat evaporation treatment system comprises a wastewater tank, the wastewater tank is connected with one end of a desulfurization wastewater inlet pipeline, one end of an evaporation device water return pipeline and one end of a desulfurization wastewater outlet pipeline, an electric valve is arranged on the desulfurization wastewater inlet pipeline, and a slurry pump is arranged on the desulfurization wastewater outlet pipeline; a liquid level instrument is arranged in the waste water tank, the control system is in interlocking control with the electric valve, the slurry pump and the liquid level instrument, and the other end of the evaporation device water return pipeline is connected with the waste heat evaporation device. The method is simple in process, convenient to operate, low in investment and operation cost and extremely low in failure rate, and can reduce the flue gas temperature in the flue, reduce the working condition flue gas amount and reduce the energy consumption of a desulfurization system while realizing complete evaporation of the desulfurization wastewater.

The utility model relates to a rotary kiln transfer chute lining which comprises anchoring nails, a pouring layer, refractory bricks and brick supporting steel plates, the brick supporting steel plates are fixed on the periphery of the bottom edge of a shell of a transfer chute, the bottom ends of the anchoring nails are welded on the shell of the transfer chute, and the pouring layer is arranged in the shell of the transfer chute. The thickness of the pouring layer arranged near the upper edge, in the middle section and at the bottom of the shell of the transfer chute is greater than the thickness of the pouring layer arranged at other parts of the shell of the transfer chute; the refractory bricks are built on the thin pouring layer, and the surface of the transfer chute lining is flat. The utility model has the advantage of being suitable for the transfer chute position of the metallurgical lime rotary kiln. Through the combination of the pouring layer and the refractory bricks, the wear-resisting and scouring-resisting performance of the working face is improved by building the refractory bricks, and the service life of the rotary kiln transfer chute can be prolonged.

The application discloses a self-aligning sliding bearing with replaceable wearing parts and an online replacement method, relates to the field of sliding bearings, and provides the self-aligning sliding bearing with replaceable wearing parts and the online replacement method, which can replace the wearing parts without disassembling a rack, a feeding device, a roller cover, a shaft coupling, a speed reducer, a locking disc and a torsion disc, greatly reduces the bearing replacement time, and improves the operation rate. The wearing condition of the bearing can be known on line to realize automatic monitoring and alarm, in addition, the self-aligning sliding bearing with replaceable wearing parts has the advantages of lower processing cost, shortened maintenance time, reduced maintenance cost, improved equipment operation rate and good economic value.

The invention provides a device and a method for efficiently treating organic solid waste to prepare hydrogen-rich fuel gas through integration of catalytic fluidization, gasification and reforming, the device comprises a gasification reaction chamber, a multi-stage high-temperature ventilation dust remover and a reforming reaction chamber which are connected in sequence, and a top outlet of the gasification reaction chamber is connected with a top inlet of the reforming reaction chamber through a connecting pipeline; and the multi-stage high-temperature ventilation dust remover is arranged on the connecting pipeline. The pretreated organic solid waste is subjected to a catalytic gasification reaction in the gasification reaction chamber, a reaction pyrolysis product enters the reforming reaction chamber to be subjected to an in-situ catalytic reforming reaction after being subjected to dust removal and filtration, hydrogen-rich fuel gas is obtained, and a part of hydrogen-rich fuel gas is sent back to the gasification reaction chamber. The whole device is integrally installed, the sealing performance is good, the space size is small, the process is safe and reliable, meanwhile, in the treatment method, the organic solid waste fully reacts under the catalytic action in the gasification reaction chamber and the reforming reaction chamber, hydrogen-rich fuel gas with the higher additional value can be obtained, and economic benefits and environmental benefits are both achieved.

[Object] To improve the performance of a filter for a vent hole, which penetrates a pellicle frame, in response to a reduction in the maximum allowable size of foreign matter, which is required especially in EUV exposure, and to a severe change in atmospheric pressure to which a pellicle film is to be exposed. [Solution] A pellicle according to the present invention includes: a pellicle frame 3; a pellicle film 1 provided on an upper end surface of the pellicle frame; a vent hole 6 provided in the pellicle frame; and a filter 7 that closes the vent hole. The filter includes a non-woven fabric composed partly or entirely of at least one of nanofibers and carbon nanotubes.

This invention relates to a device and method for the self-coupling utilization of high-temperature wastewater and hot water from alcoholysis waste liquid. The device includes: a methanol purification tower, a catalytic decomposition tower, a flash tank, a first reboiler, a methyl acetate purification tower, a cooler, and a centrifugal pump. The bottom of the methanol purification tower is connected sequentially to the flash tank, the first reboiler, and the catalytic decomposition tower via pipelines. The catalytic decomposition tower is connected to the methanol purification tower via the methyl acetate purification tower. The flash tank is connected sequentially to the centrifugal pump, the cooler, and the methyl acetate purification tower via pipelines. The high-temperature wastewater from the bottom of the methanol purification tower enters the flash tank, forming flash vapor and flash tank drainage. The flash vapor exchanges heat with the material in the catalytic decomposition tower in the first reboiler, cooling it to form hot water. The hot water and flash tank drainage are combined, cooled by the cooler to obtain cooling water, which then enters the methyl acetate purification tower. This self-coupling achieves the upgrading of high-temperature wastewater, waste heat recovery, wastewater reuse, and energy saving.

The invention relates to the field of liquid foliar fertilizer preparation. The invention relates to a preparation method of a special efficient iron-supplementing stress-resistant liquid foliar fertilizer for flowers, which comprises the following steps of: preparing ferrous carbonate by double decomposition reaction: adding ferrous sulfate and ammonium bicarbonate into deionized water at 20-28 DEG C, and reacting under a stirring condition to obtain a ferrous carbonate turbid liquid with the pH value of 6.2-6.8; adjusting the pH value of the ferrous carbonate turbid liquid to 4-6 by using an acetic acid or sodium acetate buffer solution, then adding disodium ethylene diamine tetraacetate into the ferrous carbonate turbid liquid, heating to 40-45 DEG C, and forming an EDTA-Fe < 2 + > chelating solution under a stirring condition; cooling the EDTA-Fe < 2 + > chelating liquid to room temperature, sequentially adding polyglutamic acid, sodium lignin sulfonate and boric acid, and uniformly stirring to obtain the efficient iron-supplementing stress-resistant liquid foliar fertilizer special for flowers. According to the invention, the contradiction that the traditional fertilizer can not promote the flower when supplementing iron and can not resist stress when promoting the flower is solved.

The utility model belongs to the field of electric demisters, particularly relates to an electric demisting treatment device, and aims to solve the problems that the existing electric demisting discharge cannot realize online monitoring and dynamic management, and only can stop for treatment during electric demisting discharge; due to severe working conditions, the parking processing time is long; in order to solve the problems that in the prior art, the treatment effect cannot be judged in time, according to the scheme, the device comprises a device body, an air outlet pipe is integrally formed at the top of the device body, an air inlet pipe is integrally formed at the bottom of the device body, an air outlet is formed in the air outlet pipe, and an air inlet is formed in the air inlet pipe. System parking is not needed in the whole operation process, and personnel do not need to enter equipment for operation; the safety risk and the operation cost are reduced; faults can be judged and handled in time, the operating rate of equipment is improved, the effects of online monitoring and dynamic management can be achieved, the workload of workers is greatly reduced, and the working efficiency is improved.

The utility model discloses a vertical double incinerator of dangerous waste which can be switched to each other belongs to dangerous waste incineration equipment field, including two combustion chamber flue, its left and right ends are connected A, B incinerator, and the opening and closing mechanism is arranged between the furnace and the flue, realizes switching, and the double furnace can be used independently, when the failure, the other furnace is put into quickly through the oven heating, avoids two combustion chamber cooling, and the advantage lies in avoiding single furnace failure whole line shutdown, improves system operation rate, reduces the repair cost and the refractory material loss, is applicable to dangerous waste incineration treatment, has good application prospect.

This utility model discloses a yarn twist uniformity adjustment device, belonging to the field of textile technology. The device includes a mounting plate with multiple support rods fixedly connected to its lower end. A fixing block is fixedly connected to the center of the top of the mounting plate, and a guide groove is formed on the upper end of the fixing block. A connecting plate is fixedly connected to the top of the fixing block. An adapter component is installed on one side of the mounting plate, and an adjustment guide component is installed on the fixing block. A fixing plate is fixedly connected to the other side of the top of the mounting plate. A second motor is installed on one side of the fixing plate, and a rotating rod is fixedly connected to the output end of the second motor. A take-up roller is installed on the outer surface of the rotating rod. This utility model, by setting an adapter component, eliminates the need for frequent machine shutdowns for debugging or replacement of equipment parts due to changes in material cylinder size, reducing downtime and allowing for rapid entry into production, thus improving overall production efficiency.

[Object] To improve the performance of a filter for a vent hole, which penetrates a pellicle frame, in response to the severe conditions of use required especially in EUV exposure. [Solution] A pellicle according to the present invention includes: a pellicle frame; an ultra-thin pellicle film provided on an upper end surface of the pellicle frame; a vent hole provided in the pellicle frame; and a filter that closes the vent hole. The filter includes a sheet composed partly or entirely of at least one of nanofibers and carbon nanotubes, and a support having openings and supporting the sheet.