64results about How to "Stable continuous operation" patented technology

A paper shredder enables to control power consumption and achieve energy saving by realizing a torque characteristic of low torque at high speed or high torque at low speed keeping an output of a motor within a steady level. This circuit adopts a paper shredder structured with a driving motor for a rotary cutter having an inverted linear flow characteristic between rotation speed and torque and a control circuit composed of a detecting block for said rotation speed of said motor, a voltage control block for restricting a voltage output of said motor within a certain range in accordance with said rotation speed, and a current and voltage detecting block for monitoring a current flow of said motor. While a voltage is decreased on account of motor rotation speed which correlates negatively with a torque increase of said motor in shredding papers, when a voltage is restricted to a minimum by said voltage control block, an operation of said motor is to be suspended or reversed in the case that a current detected by said current and voltage detecting block exceeds a certain level. If a motor current detected by said current and voltage detecting block exceeds a certain level, a motor operation is to be suspended or reversed by a delaying circuit.

The invention discloses a protective atmosphere electro-slag continuous casting furnace, which belongs to metal electro-slag re-melting equipment. The furnace comprises an alternating current power supply, electrode lifting mechanisms, a consumable electrode, a conductive crystallizer, a supporting mechanism, a molten steel liquid level detection device, an argon protective cover, a vibration mechanism, a throwing mechanism, a cutting device and a control system. The electrode lifting mechanisms are fixed on two sides of the conductive crystallizer; one end of the consumable electrode is fixed on a cross arm of the electrode lifting mechanism and is connected with the alternating current power supply, while the other end passes through the argon protective cover and is placed inside the conductive crystallizer; the conductive crystallizer is a jacket type water-cooled crystallizer with combined upper and lower parts, a conductive ring is embedded at the upper wall, and the conductive ring is connected with the alternating current power supply through a cable so that a loop is formed from the alternating current power supply, the consumable electrode, furnace slag, the conductive ring to the alternating current power supply; the vibration mechanism is fixed on the supporting mechanism, and a cam of the vibration mechanism is tightly contacted with a shell of the conductive crystallizer; the joint of upper and lower cavities of the conductive crystallizer is provided with the molten steel liquid level detection device; the throwing mechanism and the cutting device are fixed under an ejection port of the conductive crystallizer in turn; and the control system is electrically connected with the cross arm of the electrode lifting mechanism, the molten steel liquid level detection device, the drawing mechanism and the cutting device respectively. The protective atmosphere electro-slag continuous casting furnace can realize electro-slag continuous casting.

The invention discloses a method for producing a urea-based compound fertilizer by high tower granulation. The method comprises the following steps of: (1) adding a fluxing agent and urea into a melting tank, melting the urea at low temperature, and adding into a mixing reaction tank on the top of a tower; (2) adding other raw materials into the melted urea solution in the mixing reaction tank on the top of the tower, and mixing and stirring to obtain mixed and melted slurry; and (3) spraying the mixed and melted slurry by using a granulation nozzle in the high tower, and granulating in the tower. The method has the advantages that operating temperature and energy consumption are low, the liquidity of the slurry is high, a few bubbles exist in the mixed slurry, a small amount of biuret is generated, the operating environment is good, and the like; and high tower granulation production can be stably, normally and continuously performed.

An axial and radial cross flow moving bed adsorption reactor and an activated coke flue gas desulfurization and denitration technology thereof are used for realizing the purposes that SO2, NOx, mercury, dioxin and other pollutants in flue gas are unitedly removed and integrally purified in an adsorption reactor, and belong to the technical field of comprehensive waste flue gas treatment. The adsorption reactor is a combined type double-section double-inverse U-type axial and radial cross flow moving bed, awherein desulfurization area is arranged at a lower section of the axial and radial cross flow moving bed, an annular internal activated coke particle layer and an annular external activated coke particle layer are arranged, and the desulfurization area is divided into a coarse desulfurization area and a fine desulfurization area; a denitration area is arranged at an upper section of the axial and radial cross flow moving bed, and an activated coke particle layer is arranged; an ammonia spray pipe is arranged between the upper section and the lower section; and flue gas is filled along a double-port counter annular gas flow channel structure, the flue gas of the lower section centripetally flows to be desulfurized, and the flue gas of the upper section centrifugally flows to be denitrated. According to the reactor and the technology, desulfurization and denitration are realized in one adsorption reactor, so the adsorption reactor has the advantages of efficient utilization of activated coke, uniform flue gas mixing, sufficient gas-solid contact, stability and reliability in operation, operation cost saving and the like.

The invention discloses a device for producing coarse titanium tetrachloride by low-temperature fluidizing chlorination. The device comprises a furnace top, a furnace body and a furnace bottom, wherein the furnace bottom is provided with a gas distributor which is communicated with a gas inlet pipe and comprises a chassis and a plurality of gas nozzles uniformly distributed on the chassis; a gas outlet of each gas nozzle is upward; the furnace body is in a straight cylinder shape; the side wall of the furnace body is provided with a charging opening and a slag discharging opening; the charging opening is positioned at the bottom of the furnace body and is arranged opposite to the slag discharging opening; the arrangement position of the slag discharging opening is higher than that of the charging opening; and the vertical distance of the slag discharging opening to the charging opening is 1.2-2.2m. With the adoption of the device, production large scale is easily realized, static pressure and diffusion resistance in the furnace are reduced, the vibration strength of the furnace body is reduced; reverse backmixing of the gas is inhibited, the mass transfer and heat transfer rate are improved, the contact time and contact surface of carbide slag and chlorine are ensured, the transformation rate of TiC is improved; and the device is beneficial to continuous operation of a chlorination furnace and is convenient in manufacturing, transformation and maintenance compared with the traditional chlorination furnace.

A paper shredder enables to control power consumption and achieve energy saving by realizing a torque characteristic of low torque at high speed or high torque at low speed keeping an output of a motor within a steady level. This circuit adopts a paper shredder structured with a driving motor for a rotary cutter having an inverted linear flow characteristic between rotation speed and torque and a control circuit composed of a detecting block for said rotation speed of said motor, a voltage control block for restricting a voltage output of said motor within a certain range in accordance with said rotation speed, and a current and voltage detecting block for monitoring a current flow of said motor. While a voltage is decreased on account of motor rotation speed which correlates negatively with a torque increase of said motor in shredding papers, when a voltage is restricted to a minimum by said voltage control block, an operation of said motor is to be suspended or reversed in the case that a current detected by said current and voltage detecting block exceeds a certain level. If a motor current detected by said current and voltage detecting block exceeds a certain level, a motor operation is to be suspended or reversed by a delaying circuit.

The invention discloses a method and equipment for treating ammonia-nitrogen wastewater. The method for treating the wastewater comprises the following steps of a pH regulating stage, an air stripping reaction stage, a struvite settling reaction stage, a deep treatment stage and a sludge discharging stage in sequence. The equipment mainly comprises a regulating tank, an air stripping tower, a struvite settling reactor, a zeolite filter and a water producing tank which are sequentially connected in series. The method and equipment for treating the ammonia-nitrogen wastewater have the advantages that through pH value regulation, ammonia and nitrogen in the wastewater are converted into a free state and then are stripped through air introduced into the wastewater, and ammonia and nitrogen remaining in the wastewater are removed and recycled through a struvite settling reaction method; finally, a zeolite adsorption tower is used for adsorption, ammonia and nitrogen in the wastewater are deeply removed, and it is ensured that produced water is discharged up to the standard; the method and equipment for treating the ammonia-nitrogen wastewater are stable in treatment effect, simple in technological process, high in ammonia-nitrogen removing rate, short in reaction time, small in occupied area and the like.

The invention relates to an energy recycling control method for a PTA device. The energy recycling control method is characterized by comprising the following steps that the inlet temperature and the outlet temperature of a compressor, the inlet pressure, the outlet pressure and the outlet flow are measured; the pore plate differential pressure is converted into the square of the inlet flow qr<2> to serve as the transverse coordinate of an anti-surge curve; the outlet pressure and the inlet pressure of the compressor are converted into the pressure ratio Rc to serve as the longitudinal coordinate of the anti-surge curve; a dynamic anti-surge control curve is obtained according to the square of the inlet flow qr<2> and the pressure ratio Rc; the distance d between a working point and a surge point is obtained according to the dynamic anti-surge control curve; the DEV value, namely DEV=d-2b, is obtained according o the set safety margin b; and an energy recycling valve is controlled according to the DEV value. The energy recycling valve is controlled through an anti-surge control method, the requirement for reliable operation of the compressor is met, and the extremely-high stability performance is achieved. The working point of the compressor is near the anti-surge curve in a following manner, the unit efficiency is achieved to the maximum degree, the valve is usually in a completely-closed state, and it is ensured that the energy is not lost during use.

The invention provides a medicine integrating tea weighing with film inner bag making and loading, which comprises a casing, a reel device fixed on the casing and used for installing a film reel for making an inner bag, and a precise automatic tea weighing device and a film inner bag making and loading device which are arranged on the casing from top to bottom. Through reasonably integrating the tea weighing, the film inner bag making and the tea bagging together, the machine is more convenient and practical for use, improves the production efficiency and is more beneficial to massive production.

The invention discloses novel compound solar sludge drying equipment which belongs to the technical field of deep dehydration of sludge. In comparison with present sludge dehydration equipment, the equipment provided by the invention has the following advantages: a solar heat collector and a solar power system are additionally added; a crawler belt and a heating pipe are used to dry sludge; the structure is simple; and efficiency is high. According to the invention, a renewable clean energy, solar energy, is used as the main energy, thus saving a lot of energy. The solar heat collector has a simple structure and is convenient to install. The equipment is simple to operate. Water content of dried sludge is about 20-30%. The dried sludge can be used as a raw material of a novel energy to be recycled.

In the system there is a geothermal facility (1) including an outer circuit of heat-carrying water or fluid which exchanges heat energy with a terrain (3) to be applied in at least one dwelling unit (2) by means of its connection to a heat pump (5) which in turn connects to an inner distribution equipment or circuit (6). The referred outer circuit is placed buried in a renewable geothermal zone (4) of the terrain (3) and is made up of a closed/semiclosed circuit which connects to the heat pump (5) via a pulse pipe (7) and a return pipe (11); being arranged in that outer circuit a special channel (8) wherein the energy exchange is performed, so that the heat-carrying water or fluid is thermally regenerated as it passes through this channel (8) to be used again in the system.

It is an object of the present invention to provide an improved process whereby the yield structure of the components can be varied by a simple method, and the products can be produced stably and efficiently in a process for producing propylene and aromatic hydrocarbons from a hydrocarbon feedstock containing C_4-12 olefins using a medium pore diameter zeolite-containing catalyst. A process for producing is disclosed which comprises a propylene production step wherein a specific zeolite catalyst is used to remove a C₄₊ hydrocarbon component from a reaction mixture, and part of the hydrocarbon component is recycled as necessary without modification, and an aromatic hydrocarbon production step wherein all or a part of the C₄₊ hydrocarbon component is used as the raw material.

A gas-liquid-solid three-phase slurry bed industrial reactor capable of achieving continuous operation comprises an inlet gas distribution component composed of a false bottom and inlet gas distribution tubes, one or more layers of heat exchange tube components used for heating/cooling the bed, one or more layers of liquid-solid separator components capable of being cleaned automatically, an outlet gas-liquid-solid entrainment separation component located in the upper portion of the interior of the reactor and used for removing liquid foam and solid entrainments, a plurality of layers of solid concentration uniform distribution devices used for reducing the catalyst concentration gradient and the inlet-outlet temperature difference of the reactor, a flow guiding device located on a component support beam and used for preventing catalyst accumulation, and auxiliary systems including a filter-backflush system and a washing system. Compared with the prior art, the reactor is low in energy consumption and solves the problems of blockage, backflow and dead zones, the temperature and liquid level are well controlled, catalysts can be easily added and discharged online, and stable and continuous operation of the reactor is achieved. The reactor is suitable for being applied to the Fischer-Tropsch synthesis process on an industrial scale.

The invention provides an image synchronous following acquisition device of an ampoule bottle light inspection device adopting a backlight. The device is characterized by comprising a spindle, wherein the spindle is rotatably arranged in the central hole of a hollow direct-drive servo motor; the spindle is concentric with the hollow direct-drive servo motor; one end of the spindle is connected with a reducer; the reducer is connected with a main motor; the other end of the spindle is arranged in the center of a light inspection plate and fixedly connected with the light inspection plate; clamping jaws are arranged at the periphery of the light inspection plate; a to-be-inspected ampoule bottle is fixed on the clamping jaws; a hollow direct-drive servo motor output flange is fixed on the hollow direct-drive servo motor; the hollow direct-drive servo motor output flange is connected with a rocker arm; the rocker arm is fixedly connected with a backlight mounting plate and an industrial camera mounting plate; the backlight is arranged on the backlight mounting plate; an industrial camera is arranged on the industrial camera mounting plate; the to-be-inspected ampoule bottle is arranged between the backlight and the industrial camera. The device can complete image acquisition without halting, so that the inspection efficiency of the device is greatly improved.

The invention provides a dynamic redundancy backup method and system suitable for a train control system platform, and the method comprises the steps: executing a power-on synchronization management flow under the condition that a power-on initialization detection result is qualified, so as to determine main control equipment and a standby host of the train control system platform; on the basis ofthe system configuration information and the configuration information of each board card, respectively determining a mainboard corresponding to the main control equipment and a standby board corresponding to the standby host; loading a host application related to the main control equipment to the mainboard, and loading a standby application related to the host application to the standby board; and controlling the host application and the standby application to operate to enable the train control system platform to enter a dual-computer hot standby operation mode. The invention provides a setof redundant backup processing logic, and the spare board card is dynamically utilized to deploy the backup application, so that the stable and continuous operation of the host and the spare machinecan be ensured, hardware resources are integrated and utilized to the greatest extent, the design requirements on main and spare redundancy are met, and higher safety and reliability are achieved.

The invention provides an integrated treatment system for recycling strong brine in coking wastewater and a process thereof. The integrated treatment system comprises an efficient sedimentation tank system, an advanced oxidation system, a multi-medium filtration system, an ultrafiltration system, a resin softening system, a primary reverse osmosis system, a nanofiltration system, a concentrated water reverse osmosis system, a high-pressure reverse osmosis system, an industrial salt evaporative crystallization system and a mother liquor drying system which are connected in sequence; the nanofiltration system is also connected with a nitrate evaporative crystallization system, and the nitrate evaporative crystallization system is also connected with the mother liquor drying system; the primary reverse osmosis system, the concentrated water reverse osmosis system and the high-pressure reverse osmosis system are respectively connected with a secondary reverse osmosis system; by adopting the scheme, the problems that COD/silicon dioxide is high in content and difficult to remove, the quality of crystal salt is low, the amount of impurity salt is large and the like can be effectively solved, water for a coking production process, a sodium chloride product and a sodium sulfate product are finally formed, and the purposes of zero emission and recycling after coking wastewater treatment are effectively achieved.

The present invention provides a method for suppressing an undesirable polymerization reaction of (meth)acrylic acid in a purification step for producing (meth)acrylic acid and for avoiding troubles due to clogging of devices or the like, to thereby attain a stable continuous operation. The present invention provides a method for producing (meth)acrylic acid comprising: distilling a water-containing liquid of (meth)acrylic acid containing (meth)acrylic acid and water by using a distillation column in the presence of an azeotropic solvent boiling together with at least water to remove water from the water-containing liquid of (meth)acrylic acid through azeotropy with the azeotropic solvent, in which the water-containing liquid of (meth)acrylic acid is distilled in the presence of the azeotropic solvent after distillation by the azeotropic solvent is carried out in the distillation column.

The invention discloses a device for removing NOx by hyper-gravity with high efficiency. The device comprises a hyper-gravity gas conditioner, a nitric acid circulating tank, a hyper-gravity lye absorber, a demister and a lye tank, wherein the nitric acid circulating tank is connected to a first circulating pump through a first pipe, and the first circulating pump is connected and communicated with the hyper-gravity gas conditioner through a second pipe; the hyper-gravity gas conditioner is connected to the nitric acid circulating tank through a third pipe; the hyper-gravity gas conditioner is externally connected with an pipe for conveying industrial exhaust which contains nitric acid gas or NOx; the hyper-gravity gas conditioner is connected to the hyper-gravity lye absorber through a fourth pipe; the hyper-gravity lye absorber is connected to the demister through a fifth pipe; the demister is connected to the lye tank through a sixth pipe; the lye tank is connected to a second circulating pump through a seventh pipe; a liquid outlet pipe is arranged on an eighth pipe. The device for removing NOx by hyper-gravity with high efficiency has the beneficial effects that the process flow is simple, the NOx removing efficiency can reach over 93%, continuous operation is stable, and the cost is low.

The invention relates to a turning plate material tray for material transfer. The turning plate material tray includes turning plates distributed radially with a rotating shaft as a center, each turning plate is in a fan shape, the turning plates turn over around supporting rods so as to ensure that wet materials evenly fall into a lower layer material tray from an upper layer material tray, and aguide rail is provided with a gap with a cross section at one end and a curved surface at one end. When a low-temperature material dryer is started, the material trays of each layer are driven to rotate synchronously through the rotating shaft; the turning plates of the upper layer material tray turn downwards by taking the supporting rods as shafts under the action of gravity when rotate throughthe gap of the guide rail, and the actions of overturning, climbing and climbing horizontally are completed in turn. The wet materials on the turning plates further fall onto the lower layer materialtray, so that the transfer of the wet materials on the turning plates from the upper layer material tray to the lower layer material tray is realized.

The invention discloses an efficient bio-degradation filter reactor and a method for treating black odorous water bodies through the efficient bio-degradation filter reactor, and belongs to the technical field of sewage treatment. The efficient bio-degradation filter reactor comprises a reactor column, wherein a bioreaction zone and a deep filtration zone are arranged inside the reactor column from top to bottom, an isolation layer composed of a flaky material is arranged at a boundary between the bioreaction zone and the deep filtration zone, and light suspension filler with a particle size of 2-4 mm is arranged in the bioreaction zone; and large-specific-gravity filler with a particle size of 1.0-2.0 mm is arranged in the deep filtration zone, and the specific gravity of the filler in the deep filtration zone is 2.5-3 times that of the filler in the bioreaction zone. Biodegradation of organic matter, denitrification, phosphorus removal and removal of fine suspended solids are integrated into one by the reactor, and the reactor is applied to treatment of black odorous water bodies, so that the surface water bodies of a V class and an inferior V class are gradually improved into water bodies of a IV class or above, and the problem of pollution of the black odorous water bodies is solved fundamentally.