42results about How to "Avoid frequent downtime" patented technology

The invention provides a refrigeration method of a low temperature environment air conditioner. When the air conditioner operates to refrigerate, the refrigeration method comprises the following steps of: step 1, reducing the topmost operating frequency of an outer door machine compressor in the air conditioner; step 2, adjusting the operating frequency of the compressor according to the temperature of a coil of an indoor machine evaporator in the air conditioner; and step 3, increasing the rotation speed of an inner fan of an indoor machine, and reducing the rotation speed of an outer door of an outdoor machine. The topmost operating frequency of the compressor is reduced, the compressor is frequently lifted frequency because of high frequency under the low temperature environment to be avoided, the frequency of the compressor is adjusted according to the temperature of the coil, and an evaporator is iced so that the compressor is stopped to be avoided; and the wind speed of the inner fan is increased, the evaporator and indoor heat transfer quantity is improved, the wind speed of the outer fan is reduced, the heat transfer quantity of a condenser is reduced, the air conditioner can normally refrigerate under the low temperature environment to be realized, and the refrigerating effect is optimized.

The invention discloses a control method of an electronic expansion valve, a radiation air conditioner and a storage medium. After a startup instruction is received, operation mode information in thestartup instruction is obtained; when the operation mode is refrigeration or dehumidification, the openness of the electronic expansion valve is set as preset initial openness; finally, after the radiation air conditioner is operated by a first preset time length according to the preset initial openness, a superheat degree of an evaporator is calculated, and the openness of the electronic expansion valve is adjusted according to the superheat degree, so that liquid impact and damage of the compressor caused by halfway evaporation of a refrigerant in the evaporator are prevented, frequent stopof the compressor caused by higher superheat degree of the evaporator is prevented, the control precision of the superheat degree of the radiation air conditioner is improved, and the operation stability and the life of the compressor are guaranteed.

The invention discloses an energy requirement correction method of an air conditioning system. The energy requirement correction method of the air conditioning system comprises the following steps that the operating mode of the air conditioning system, the indoor environment temperature in the current operating mode and the coil pipe temperature of an indoor heat exchanger are acquired; the difference value between the indoor environment temperature and the preset indoor environment temperature is calculated, and the current energy requirement correction value of the air conditioning system is determined according to the temperature interval where the difference value is located; and when the coil pipe temperature of the indoor heat exchanger meets preset conditions, the current energy requirement correction value is adjusted. The invention further discloses the air conditioning system and a computer readable storage medium. According to the air conditioning system, the energy requirement correction method and the computer readable storage medium, in the energy requirement correction process of the air conditioning system, the phenomenon that the air conditioning system is frequently shut down due to the fact that the temperature frequently reaches the preset indoor environment temperature can be avoided, and therefore the comfort feeling of a user is improved.

The invention discloses a safety control method for a TRT (Blast Furnace Top Gas Recovery Turbine Unit) fixed blade servo control system. In the method, when a TRT unit runs normally, blast furnace top pressure is adjusted and controlled by the TRT unit fixed blade servo control system; when the TRT unit fixed blade system fails, an electro-hydraulic servo valve quits the control over a fixed blade executing mechanism; a PLC (Programmable Logic Controller) system of the TRT unit outputs a control signal to a bypass electromagnetic valve; the furnace top pressure is restored to be stable undermain adjustment of a blast furnace pressure reducing valve bank and auxiliary adjustment of the bypass electromagnetic valve; operating personnel check on line and manually repair; and if the system cannot be normally restored in a short time, the TRT unit is emergently stopped. According to the method disclosed by the invention, the fixed blade servo system can be checked without stop, the reason of failure and the finally adopted measure are determined, and unnecessary frequent stop of the TRT unit can be avoided. By applying the method, the safety of the system during emergency failure of the fixed blade servo control system can be greatly enhanced; and according to site validation put into operation, the production safety of blast furnace smelting is greatly guaranteed by the method.

The invention provides an electronic control system for a mining anti-explosion electronic injection diesel locomotive. The electronic control system comprises a diesel locomotive safety protection module, an engine fuel oil injection control module, a power supply control module and a peripheral electrical control module. The power supply control module provides a power supply for the diesel locomotive safety protection module, the engine fuel oil injection control module and the peripheral electrical control module. The engine fuel oil injection control module comprises a diesel engine working condition collecting unit, an actuator and an anti-explosion electric control box. The diesel locomotive safety protection module comprises a safety data collecting unit, a power supply controller, a display unit and a wireless communication unit. An electronic injection diesel engine is used under a mine, the engine can obviously lower emissions and improve operating economical efficiency, and a positive promotion effect on energy conservation, emission reduction and health is achieved. An electronic control unit (ECU) is arranged inside the anti-explosion electric control box. The ECU reasonably controls the oil injection and power output of the engine according to actual working conditions and loads, and thus the economic performance and emission performance are improved.

The invention discloses a wood fiber production method, which comprises: S1, material selection; S2, skin removal; S3, water washing; S4, slicing; S5, pre-cooking; S6, pressurizing cooking; S7, grinding; S8, softening; S9, drying; S10, air selection; S11, nutrient solution spraying; and S12, packaging warehousing. According to the present invention, the wood fiber produced through material selection, skin removal, water washing, slicing, pre-cooking, pressurizing cooking, grinding, softening, drying, air selection, nutrient solution spraying, packaging warehousing and other steps can be well used in spray seeding technologies; the wood fiber produced by the method has good softness; and during the spray seeding, when the wood fiber, the water and the binder are mixed, the wood fiber has good water absorption, such that each wood fiber can absorb a large amount of water so as to achieve good water content.

The invention relates to a high-efficiency control system of a disc water filter and a control method. A water inlet end of the disc filter is connected with a three-way valve; an outlet end of the disc filter is connected with a pneumatic cutoff valve; an electromagnetic valve I and an electromagnetic valve II are arranged on the three-way valve and the pneumatic cutoff valve respectively and connected to a PLC (programmable logic controller); the disc filter and the three-way valve are connected with a forward filtration pipeline and a reverse cleaning pipeline; the PLC circularly controls opening and closing of the electromagnetic valves to further switch opening and closing of the three-way valve and the pneumatic cutoff valve for forward water filtration and reverse disc filter cleaning; the defect of power pipeline blocking caused by dirt in water is overcome; a control mode is simplified; backwash water pressure is increased; the backwash time is adjusted flexibly; a fault rateis decreased; the maintenance time is shortened; a running rate of equipment is increased; and normal production is ensured.

A large-scale mill process control system relates to mining machinery, particularly a large-scale mill process control system that, through discrimination, avoids distorted signals and effectively avoids frequent shutdowns due to false alarms and faults. The large-scale mill process control system of the invention is installed on the mill and is characterized by comprising an internal structure, an external auxiliary unit and a mill monitoring system, wherein the internal structure, the external auxiliary unit and the mill monitoring system are connected by wires. The invention prevents distortion signals from entering the logical interlocking control unit and avoids frequent shutdown of the mill due to false alarms and faults by performing discrimination on all the detection signals of the external sensor, adds predictive control functions of mechanical properties to effectively control the degree of mechanical damage to bearings, bearing bushes, gears, etc., adds an online operationfault handling function, enables the gear oil lubrication, temperature detection and other faults to be handled without stopping the machine, and reduces the frequency of unnecessary shutdown of the mill.

The invention relates to a fresh air ventilator with dust removal and intelligent humidity control functions. The dust containing fresh air enters a fresh air passage from a fresh air inlet, is filtered, humidified or dehumidified by a wet type filter section and is subjected to energy recovering by a cross-flow type fresh exhaust air heat exchanger and indoor exhaust air, and the clean air meeting the humidity requirement is sent into a room by a blower. An automatic rotary high-pressure spray head of the wet type filter section continuously sprays and filters dust in the fresh air. An indoorrelative humidity sensor measures the relative humidity of the indoor air, transmits the data to a control module, and then the heating quantity of a pipeline type electric heater is adjusted and controlled to adjust the water feeding temperature of the wet type filter section to realize the humidification or dehumidification of the fresh air. According to the fresh air ventilator with the dust removal and intelligent humidity control functions, the humidity of the fresh air can be intelligently controlled while the wet type high-efficiency filtering of the fresh air dust is realized, and a filter element is not changed in the whole process during operation.

Disclosed is a drip irrigation tape and process for preparation. The drip irrigation tape comprises the following raw materials: HHMTR144 resin, black masterbatch and polyester of 1.2 -propylene adipate. The process for preparation is that the needed raw materials content is fully commingled in a mixer, and then is transported to the production line of a single screw rod extractor to extrude moulding and obtain the drip irrigation tape. The invention has the advantages that the processing property, the appearance quality and the productive efficiency of the drip irrigation tape are improved, accumulated material phenomenon of die orifice is reduced or is eliminated, the surface pit of the drip irrigation tape is eliminated, the process temperature is decreased, electric power consumption is reduced, thereby energy is saved, through improving the processing property, the one time qualified rate of product and the yield are increased, thereby the manufacturing cost of the drip irrigation tape is low, simultaneously, the decayed hole arisen in the process of production with the drip irrigation tape is reduced, the phenomenon of chronic machine halt in the process of production is avoided, thereby the process of production is easily controlled, using the drip irrigation tape of the invention facilitates crop growth, thereby economic loss is reduced.

The invention discloses a CT collision protection device and a CT collision protection method thereof. The CT collision protection device comprises a collision distance sensor, an infrared induction sensor, a misoperation processing unit and a control feedback unit, wherein the collision distance sensor is vertically arranged on the end face, close to a CT rack housing, of a CT scanning bed body;when it is detected that the CT rack housing enters the safe distance of the CT scanning bed board, warning information is output; the infrared induction sensor is arranged at the upper end of the CTrack housing and outputs warning information after detecting that an examined patient leaves the safe area; the misoperation processing unit is used for outputting a collision signal when one of the CT scanning bed board and the CT rack housing moves; the control feedback unit is connected with a CT motion module; and the collision distance sensor, the infrared induction sensor and the misoperation processing unit are all connected with the control feedback unit, so that the CT motion module is controlled to stop moving when the warning information and the collision signal are received at thesame time, and collision between the CT scanning bed and the CT rack housing is effectively prevented.

The invention relates to an elevator traction mechanism with a safety loop detecting system, and the elevator traction mechanism solves the defects in the prior art. According to the technical scheme,the key point is that the elevator traction mechanism comprises a safety loop, a plurality of switch detecting modules, a safety bus and an upper control system, wherein the safety loop comprises a master switch, a plurality of limiting switches and a safety switch; a power supply is connected to a primary safety contactor coil through the safety loop; each switch detecting module is correspondingly provided with a master switch, a limiting switch or a safety switch, the output end of the switch detecting module is in communication connection to the upper control system through the safety bus, the first detecting end of the switch detecting module is connected to a movable contact of the master switch, a movable contact of the limiting switch or a movable contact of the safety switch, andthe second detecting end of the switch detecting module is connected to a movable contact of the master switch, a movable contact of the limiting switch or a movable contact of the safety switch; thesafety bus is used for connecting all switch detecting modules to the upper control system; and the upper control system receives output signals of all switch detecting modules and a synchronous controller through the safety bus to control operation of an elevator.

The invention discloses a wire drawing machine convenient for material changing, and relates to the technical field of steel wire production device. A winding machine of the wire drawing machine comprises a machine base fixed on the ground, wherein a rotary disc which is rotatably connected to the machine base is arranged on the top of the machine base; winding rollers which are symmetrically arranged are separately arranged at the two sides of the rotary disc; the winding rollers are detachably connected to the rotary disc through movable connecting parts; the rotary disc is rotatably connected with the machine base through a rotary shaft which is perpendicular to the horizontal plane; a rotary mechanism is arranged in the machine base for driving the rotary shaft and the rotary disc to rotate by 180 degrees around the central line of the rotary shaft and the rotary disc; after a wire is wound, a standby winding roller can be rotated to a working position for directly working, and anoperator can dismount and replace the winding roller at the standby position, so that equipment can be guaranteed to be in a working state all the time, and therefore, frequent halt is avoided, time for replacing the winding roller can be greatly shortened, and working efficiency is improved.

The invention discloses chili temperature sterilization equipment for chili sauce processing and an operation method, and particularly relates to the technical field of chili processing.The chili temperature sterilization equipment comprises an equipment rack, a cleaning pool is fixedly arranged at the top of the equipment rack, a lifting support is fixedly arranged in one end of the cleaning pool, and a lifting conveying belt is movably arranged outside the lifting support; a material receiving bin is fixedly arranged outside one end of the cleaning pool, the top end of the lifting support stretches into the material receiving bin, an ultraviolet sterilization lamp tube is fixedly arranged on one side of the top of the material receiving bin, and a pepper processing tank is fixedly arranged at one end of the equipment rack. Pepper is fed into the pepper cleaning pipe, the cleaning roller stirs the pepper to clean the pepper, meanwhile, the aeration head performs aeration treatment, bubbles enter the pepper cleaning pipe to further clean the pepper, the pepper cleaning effect is good, sterilization treatment of the pepper is facilitated, and the pepper treatment quality is improved.

The invention discloses a rotary exhaust valve comprising a valve seat and a valve cover. The valve seat comprises a metal cylinder body and a first cast rubber layer, the side wall of the metal cylinder body is provided with a plurality of perforated holes, the first cast rubber layer wraps the metal cylinder body, the first cast rubber layer comprises in-hole cast rubber, an inner cast rubber layer and an outer cast rubber layer, the perforated holes are filled with the in-hole cast rubber, and the in-hole cast rubber is connected with the inner cast rubber layer and the outer cast rubber layer; and the valve cover includes a cover body and a second cast rubber layer, an annular groove is formed in the position, corresponding to the valve seat, of the cover body, and the second cast rubber layer is located in the annular groove. According to the rotary exhaust valve, the perforated holes are formed in the metal cylinder, as for the first cast rubber layer, the inner casting rubber layer and the outer casting rubber layer are connected through the in-hole cast rubber, the implication performance can be strengthened, and falling is not prone to happening. The second cast rubber layer is located in the annular groove in the cover body, and extrusion deformation or crushing is not prone to happening. The first cast rubber layer and the second cast rubber layer are not prone to being detached or damaged, the rotary exhaust valve is low in failure rate, and the service life is long.

The invention discloses a paper feeding mechanism of a paper feeder and a paper feeding method. The paper feeding mechanism of the paper feeder comprises a paper separating device, a paper conveying device, a paper separating device height adjusting mechanism and a paper stack height real-time detecting and adjusting device, wherein the paper separating device is arranged above a paper feeding table, and the paper conveying device is arranged at a paper conveying station; the paper separating device height adjusting mechanism is arranged on a paper feeding head body and comprises a sliding guide assembly and an h proximity sensor; and the paper stack height real-time detecting and adjusting device is arranged below a paper conveying supporting plate and comprises a detection finger pushing mechanism, a detection finger lifting mechanism and an H proximity sensor. The paper feeding method of the paper feeding mechanism comprises the steps that when the paper is separated and conveyed, through the paper separating device height adjusting mechanism and the paper stack height real-time detecting and adjusting device, paper stacks with bent paper and warped paper can be automatically and reliably separated and stably conveyed, and good adaptability to the paper stacks is achieved; frequent shutdown of equipment is avoided, the working efficiency is improved, and the production cost is reduced; and the equipment is low in operation difficulty and low in labor intensity.

The invention discloses an elevator traction mechanism. The elevator traction mechanism comprises an elevator control system for controlling elevator running, a traction machine, a traction wheel connected with the traction machine, and traction ropes wound around the traction wheel. One ends of the traction ropes are connected with an elevator car, the other ends of the traction ropes are connected with counter weights, the traction wheel is coaxially connected with a worm gear, a worm is engaged with the worm gear, and accordingly a traction wheel locking mechanism is formed. The worm is connected with a protection motor, and the protection motor and the traction machine adopt servo motors. A synchronous controller controls the rotation speed of the traction machine and the protection motor according to the transmission ratio of the worm and the worm gear, and the rotation speed ratio of the worm and the worm gear and the transmission ratio of the worm and the worm gear are kept synchronous. When the load of the protection motor exceeds the maximum set value, the elevator control system cuts off a power source of the protection motor and the traction machine. By means of the elevator traction mechanism, reliable traction wheel braking can be achieved when the elevator system is powered off or breaks down, and safety accidents of elevator car roof rushing or bottom squatting are effectively avoided.

The invention discloses an air conditioner control method of an electric vehicle. An air conditioner of the electric vehicle comprises a controller, an evaporator, a compressor, a condenser, a cold and warm air door actuator, an air blower speed regulation module and an evaporator temperature sensor. The air conditioner control method of the electric vehicle comprises an electric vehicle air conditioner starting method, a compressor rotating speed control method, an anti-shutdown control method, a compressor speed regulation method, an evaporator shutdown protection method and an air volume gear switching quick response method. According to the method, simple control logic is realized, and the using number of sensors is reduced in a hardware aspect. And the energy-saving and environment-friendly effects are achieved through variable rotating speed control of the compressor, and the economic performance of the product is improved.

The invention discloses a traction device provided with safety tongs. The traction device comprises an elevator control system used for controlling an elevator to operate, a tractor, a traction wheelconnected with the tractor, and a traction rope wound around the traction wheel. One end of the traction rope is connected with a car platform sill, and the other end of the traction rope is connectedwith a counter-weight. The traction wheel is in coaxial connection with a worm wheel. A worm is engaged with the worm wheel, and thus a locking mechanism of the traction wheel is formed. The worm isconnected with a protecting motor. Servo motors are adopted as the protecting motor and the tractor. The synchronous controller controls the rotating speed of the tractor and the protecting motor according to the transmission ratio of the worm and the worm wheel, and thus the rotating speed ratio of the worm and the worm wheel keeps synchronous with the transmission ratio of the worm and the wormwheel. When the load of the protecting motor surpasses the maximum set value, the elevator control system cuts off a power source of the protecting motor and the tractor. The car platform sill is provided with the car platform sill safety tongs. According to the traction device, when an elevator system is powered off or breaks down, reliable braking of the traction wheel is achieved, and the safety accidents of up-going and collapsing of the car platform sill are effectively avoided.

The application provides a deviation correction method which is applied to material cutting equipment. The method comprises the steps that an image of a material is acquired; multiple pieces of width data of the material are obtained according to the image; a dispersion degree of the filtered width data is computed; whether the dispersion degree satisfies a preset stability requirement is judged; and a width mean value of the material is obtained when the dispersion degree satisfies the preset stability requirement, and deviation of the material cutting equipment is corrected according to the width mean value. In the method provided by the application, through real-time detection of the width data, deviation of the material cutting equipment is corrected according to the mean value when a judgment result shows that the dispersion degree of the width data satisfies the stability requirement. The method has the beneficial effects that width abnormities can be corrected in time; manual cost is reduced; frequent halt of the equipment caused by deviation correction can be avoided; and through judgment of the stability requirement, the width data with large deviations are removed, and deviation correction effects can be improved, so cutting precision of the material is increased.

The invention discloses a wind power generating set blade damage monitoring system and method. In the present invention, the electric tackle is connected to the main control of the wind turbine, and the electric tackle can be moved together with the yaw of the group according to the yaw signal provided by the main control of the wind turbine. The distance between the laser reflection points of the target blade is obtained by the damage range finder, and the Obtain the slope distribution of the blade along the span direction, and according to the comparative analysis of the distance between the range finder and the laser reflection point of the target blade and the slope distribution of the blade along the span direction, the unit executes power limit (pitch change) or stops to prevent damage to the blade Accidents happened to the unit. This method avoids the cumbersome process of pre-embedding sensors during blade manufacturing, and at the same time reduces the risk of lightning strikes caused by additional sensors on the blades, ensuring the safety of the unit. At the same time, the blade damage monitoring and control method has multiple execution modes, which can not only ensure the safe operation of the unit, but also avoid frequent shutdowns and ensure power generation.

A measuring method used for reciprocating movement includes that a toothed belt is fixed on a machine tool body, the toothed belt is longer than a moving distance of a workbench and is parallel to a moving direction of the workbench, a detecting device comprises an incremental encoder, a synchronous gear and a connector, the synchronous gear and the incremental encoder are connected through the connector, a central shaft of the synchronous gear is fixed on a gear box casing through a bearing seat, an extending arm of the gear box casing is fixed on a reciprocating workbench, the synchronous gear meshes with the toothed belt, flange discs are arranged at two ends of the connector, and a central shaft of a synchronous belt gear is connected with a spindle of the incremental encoder through ashaft coupler in the connector.

The invention provides a finished product solid tray shaping device which comprises a first baffle, a second baffle, a first connecting rod, a second connecting rod and a brush, and the lower end of the first baffle and the lower end of the second baffle are used for being arranged on the two sides of a conveying chain machine correspondingly. The two ends of the first connecting rod are connected with the front portion of the upper end of the first baffle and the front portion of the upper end of the second baffle correspondingly. The second connecting rod is parallel to the first connecting rod, and the two ends of the second connecting rod are connected with the rear portion of the upper end of the first baffle and the rear portion of the upper end of the second baffle respectively. A plurality of horizontally-arranged brushes are evenly distributed on the inner wall of the first baffle from top to bottom, and a plurality of horizontally-arranged brushes are evenly distributed on the inner wall of the second baffle from top to bottom. The upper end of the first baffle, the first connecting rod, the upper end of the second baffle and the second connecting rod jointly form an isosceles trapezoid structure. According to the shaping device, shaping of the finished solid trays can be well achieved, and the stack shape of the finished solid trays is regular.

The invention discloses efficient comprehensive winnowing equipment with an intelligent cleaning function, and relates to the field of garbage treatment. The equipment comprises a first-stage fan assembly, a second-stage fan assembly, a third-stage fan assembly, a bouncing belt section, a winnowing light object discharging belt conveyor, a winnowing bin, a settling chamber and an air return structure with an automatic cleaning function. According to the equipment, three-stage winnowing is carried out on light objects through the first-stage fan assembly, the second-stage fan assembly, the third-stage fan assembly and the third-stage fan assembly, four-stage winnowing is carried out on heavy objects, four-stage winnowing is carried out on the light objects through the bouncing belt section, and then efficient comprehensive winnowing is achieved. The air return structure uses wind power internal circulation for dust raising control, and the environmental protection requirement is met. An air return port filter screen is automatically cleaned through a cleaning device, the labor intensity of workers is reduced, and frequent shutdown is avoided.

The invention discloses a safety control method for a TRT (Blast Furnace Top Gas Recovery Turbine Unit) fixed blade servo control system. In the method, when a TRT unit runs normally, blast furnace top pressure is adjusted and controlled by the TRT unit fixed blade servo control system; when the TRT unit fixed blade system fails, an electro-hydraulic servo valve quits the control over a fixed blade executing mechanism; a PLC (Programmable Logic Controller) system of the TRT unit outputs a control signal to a bypass electromagnetic valve; the furnace top pressure is restored to be stable undermain adjustment of a blast furnace pressure reducing valve bank and auxiliary adjustment of the bypass electromagnetic valve; operating personnel check on line and manually repair; and if the system cannot be normally restored in a short time, the TRT unit is emergently stopped. According to the method disclosed by the invention, the fixed blade servo system can be checked without stop, the reason of failure and the finally adopted measure are determined, and unnecessary frequent stop of the TRT unit can be avoided. By applying the method, the safety of the system during emergency failure of the fixed blade servo control system can be greatly enhanced; and according to site validation put into operation, the production safety of blast furnace smelting is greatly guaranteed by the method.

The invention discloses a chilli temperature sterilization equipment and operation method for chilli sauce processing, specifically relates to the technical field of chilli processing, including an equipment frame, a cleaning pool is fixedly arranged on the top of the equipment frame, and one end of the cleaning pool is fixed internally A lifting bracket is provided, and a lifting conveyor belt is installed on the outside of the lifting bracket. One end of the cleaning tank is fixed with a receiving bin outside. The top of the lifting bracket extends into the inside of the receiving bin, and the top side of the receiving bin is fixed An ultraviolet sterilizing lamp tube is arranged, and a chili processing tank is fixedly arranged at one end of the equipment frame. In the present invention, the peppers are sent into the pepper cleaning pipe, and the cleaning roller stirs the peppers to realize the cleaning of the peppers. At the same time, the aeration head performs aeration treatment, and the air bubbles enter the inside of the pepper cleaning pipe, further cleaning the peppers, and the pepper cleaning effect is improved. Good, and then facilitate the sterilizing treatment of pepper, improve the quality of pepper processing.

The invention provides a deasphalted oil hydrotreatment method. The method is carried out in a hydrotreatment apparatus, the hydrotreatment apparatus comprises a hydrogenation metal removal unit and a hydrotreatment unit which are sequentially connected in series, the hydrogenation metal removal unit comprises a main hydrogenation metal removal reactor and a standby hydrogenation metal removal reactor which are connected in parallel, and the volume of the main hydrogenation metal removal reactor is greater than the volume of the standby hydrogenation metal removal reactor. The method is characterized in that deasphalted oil and hydrogen are introduced to the hydrotreatment apparatus, and contact with a plurality of hydrogenation catalyst beds arranged in the hydrotreatment apparatus; and in the hydrotreatment process, the main hydrogenation metal removal reactor and the standby hydrogenation metal removal reactor are alternately used, and the online time of the main hydrogenation metal removal reactor is greater than the online time of the standby hydrogenation pretreatment reactor. The method enables the space utilization rate of the above reactors in the hydrotreatment apparatus to be substantially improved.

The invention provides an apparatus for keeping non-stop operation of steam turbines in waste heat power plants of an iron and steel plant; the apparatus comprises a data acquisition device, a decision support system, a control system, a cooling and pressure-reducing device, a steam output adjusting valve block, a steam discharge valve / water drain valve, a steam synchronization adjusting valve block, an emergency steam pipeline, emergency steam and data acquisition line, which are connected with each other; a method for keeping non-stop operation of the steam turbines in the waste heat power plants of the iron and steel plant comprises the steps: the power plants are contacted with associated production branch plants by using computer networks; the waste heat power generation is equipped with the cooling and pressure-reducing device and used as the emergency standby steam source of the next level; the data acquisition module acquires data of present values and accident values; according to the overhauling or accident conditions of the production plan, the decision support system controls the steam flowing process of whole heating pipes by an acquisition module and the data of a database itself, so that the stable continuous connection of the steam is achieved and the non-stop of the steam turbines can be guaranteed. According to the apparatus and the method for keeping non-stop operation of the steam turbines in the waste heat power plants of the iron and steel plant, the consumed time of frequent shutdown of the steam turbines is avoided, so that the steam turbines have long service life and are energy-saving and environmental-friendly.

The invention discloses a wood fiber production method, which comprises: S1, material selection; S2, skin removal; S3, water washing; S4, slicing; S5, pre-cooking; S6, pressurizing cooking; S7, grinding; S8, softening; S9, drying; S10, air selection; S11, nutrient solution spraying; and S12, packaging warehousing. According to the present invention, the wood fiber produced through material selection, skin removal, water washing, slicing, pre-cooking, pressurizing cooking, grinding, softening, drying, air selection, nutrient solution spraying, packaging warehousing and other steps can be well used in spray seeding technologies; the wood fiber produced by the method has good softness; and during the spray seeding, when the wood fiber, the water and the binder are mixed, the wood fiber has good water absorption, such that each wood fiber can absorb a large amount of water so as to achieve good water content.