40results about How to "Guarantee long-term stable operation" patented technology

The invention relates to the field of technologies for treating environmental engineering wastewater, in particular to a method and a system for treating desulfurization wastewater in a zero-discharge manner on the basis of electrodialysis. The method and the system have the advantages that electrodialysis concentrated water is regulated and distributed into a bipolar membrane electrodialyzer and a flue evaporating apparatus in membrane treatment phases, acid and alkali can be manufactured by the bipolar membrane electrodialyzer and flow back for pretreatment and membrane treatment, and accordingly the wastewater can be reduced and recycled; electrodialysis fresh water flows back for membrane treatment, accordingly, the reuse rate of the fresh water can be increased, the pretreatment chemical feeding cost and chemical preparation workload can be reduced, and desalting load and tail-end evaporation crystallization load on the system can be integrally relieved; tail-end treatment of the system is effectively regulated, accordingly, the method and the system can cope with different types of variation of water quality and water volumes of power plants, and the integral system can assuredly stably run; zero-discharge effects are realized by the system for treating the desulfurization wastewater, environment-friendly design requirements on treating waste by the aid of waste can be met, and the method and the system have broad application prospects.

The invention discloses a wind-proofing sand-blocking device for preventing sand from affecting or damaging railways and other facilities. The wind-proofing sand-blocking device comprises a vertical column buried on the ground and a wind-blocking ball provided with through holes, wherein an anti-corrosion steel wire mesh is fixed on the vertical column, and the wind-blocking wall is fixed on the iron wire mesh. The wind-blocking wall comprises a plurality of wind-blocking monomers which are combined together; each wind-blocking monomer is a rectangular double-sided sandwich structure consisting of a windward side and leeward side, wherein the thickness of a hollow sandwich layer is 5 to 15cm; the windward side and leeward side of the wind-blocking monomer are respectively and symmetrically provided with at least one through hole; and holes on the windward side of the monomer and holes on the leeward side thereof are not on the same axis, the ration of the diameter of the holes of the windward side to that of the holes of the leeward side is 8:1 to 1:1, and the windward side and the leeward side are separated by a strut.

The invention is a semiconductor double-end-pumped Nd:YVO4 high-power single-mode solid laser, comprising two laser diodes, 45 deg mirror, two optical fibers, two optical coupling systems, Nd:yvo4 crystal, Q-switch, mirror, output mirror and cooler, and theoretically making detailed synthetic optimization design for cavity structure, thermal lens focal length, and doping concentration, damage threshold and length of Nd:YVO4 crystal. And the experiment shows that the experimental results accord with the theoretical design, perfectly.

The present invention relates to the technical field of environmental protection and sewage treatment and especially relates to an integrated sewage treatment system and a method for the hydrolytic-aerobic granular sludge, which comprises a first water inlet unit, a second water inlet unit, a water drainage unit, a sludge discharge unit, a control unit, a hydrolytic acidification area, an adjustment area and an aerobic granular sludge area. The first water inlet unit is in communication with the hydrolytic acidification area. The upper part of the hydrolytic acidification area is in communication with the adjustment area. The adjustment area and the aerobic granular sludge area are in communication with each other through the second water inlet unit. The water drainage unit is in communication with the aerobic granular sludge area. An aeration unit is in communication with the aerobic granular sludge area. The aeration unit and the water drainage unit are connected with the control unit. The entire system is reasonable and effective in structure, and simple to operate. The hydrolytic acidification technique and the aerobic granular sludge technique are organically combined, so that the sewage biodegradability is improved. The continuous feeding and intermittent reaction is realized. The difficult problems that the aerobic granular sludge is difficult to culture, hard to run stably for a long time, complicated in process and poor in quality of effluent water can be solved.

The invention relates to an optimum method for co-producing melamine and urea, the melamine production technology is characterized by comprising a gas phase quenching or solid phase quenching low pressure circulation method which takes urea as a raw material, an European science and technology high pressure method or a DSM low pressure method, and an urea device is a CO2 air stripping urea device. The optimum method has the following technical effects that the urea device enables matched reformation according to maximal coproduction melamine capability, and the productivity is increased by near 25% after merging with melamine tail gas, the capacity expansion reformation on synthesis ammonia is not required, because that a medium pressure decomposition system and an urea pre-concentration device are added, the vapor of urea per ton and unit consumption of electricity are not increased.

The invention discloses a space truss support device in a large-scale tower, the large-scale tower is provided with a foundation beam therein, pillars are distributed on the surface of the foundation beam at intervals, both layering and horizontal support of X-direction cross beams and Y-direction cross beams are realized between the pillars and between the pillars on the periphery and a tower body, and the X-direction cross beams and the Y-direction cross beams of all layers horizontally support functional members inside the tower respectively. The device consisting of the foundation beam, the pillars, the X-direction cross beams and the Y-direction cross beams has the characteristics of large intensity, good rigidness and small flexibility, in particular, the multi-pillar structure of the device achieves the division of the existing large-span long cross beam into small-span short cross beams, thus high levelness of tower tray can be guaranteed. With strong resistance to the impact of high-speed variable gas load, the device can effectively avoid the vibration accident caused by the impact, and in particular, a baffle in the structure is a segmental short baffle so as to avoid resonant vibration owing to the impact and guarantee long-term stable operation of the tower. The invention has the prominent advantages of reducing the manufacturing and installation difficulty as well as the investment of tower support device.

The invention discloses a hydrogenation method of coker gasoline. By combination of advantages of a fluidized bed and a stationary bed, dienes and other unsaturated hydrocarbons in raw materials are diluted and heat of reactions is took away by adoption of circulating oil, thus avoiding coking of a catalyst bed layer and reducing the pressure drop of a reactor. Without large changes on devices at present, the method can achieve long-term operation of the devices and increase economic benefit with small investment.

The invention relates to an alumina flow control apparatus, especially to an alumina flow control apparatus applied in an electrolytic flue gas purifying system or a hyper-dense phase conveying system in the industry of electrolytic aluminum. The alumina flow control apparatus comprises a blanking tube; the discharge end of the blanking tube is connected with the charging end of a rotary feeding device, the discharge end of the rotary feeding device is connected with one end of a flowmeter, the other end of the flowmeter is connected with the charging end of a vibrating screen, and the discharge end of the vibrating screen is connected with a conveying device. The advantages and effects of the invention are as follows: control of flow precision in the conveying process of alumina is improved; effective adjusting of alumina flow is realized; operational stability of a system is enhanced; long-term and stable operation of an electrolytic aluminum production system and an electrolytic purification system is guaranteed; the apparatus has critical economic and social values.

The invention provides an electrodialysis device. According to the electrodialysis device, by respectively arranging an anode protection chamber and a cathode protection chamber at ends of a membrane stack, respectively close to an anode chamber and a cathode chamber, and by operating a protective solution with an independent circulatory system, an electrode solution of the electrodialysis device is protected. The anode protection chamber and the anode chamber are isolated through an anode membrane, and the cathode protection chamber and the cathode chamber are isolated through another piece of anode membrane. The anode protection chamber and the cathode protection chamber are both isolated from a desalination chamber and a concentration chamber between the anode protection chamber and the cathode protection chamber through cathode membranes. Thus, high valence cation is controlled in transferring to the cathode chamber and the anode chamber through the membranes, and high valence cation in desalination liquor and concentrated liquor are effectively isolated. Content of high valence metal ions in the electrode solution is remarkably reduced, generation of precipitates in the cathode chamber or deposition on a negative plate due to a reduction reaction is avoided, cycle period of the electrode solution is greatly prolonged, and operating cost of the electrode solution is remarkably lowered.

The invention discloses solar panel supporting equipment capable of improving the photoelectric conversion efficiency of a photovoltaic panel. The solar panel supporting equipment comprises a rack anda snow removing device arranged on the rack. The snow removing device comprises a snow shoveling mechanism, a snow pushing mechanism and a resetting mechanism; the snow shoveling mechanism comprisestwo spiral plates which are symmetrical about the center of the rack, a center column which is arranged in the two spiral plates in a penetrating mode, and two gears which are arranged at the two endsof the center column respectively. The two spiral plates are connected with each other and are arranged in the rear upper part of the rack; and each gear is provided with a plurality of triangular teeth, and the triangular teeth are distributed at equal intervals in the circumferential direction of the gear. By arranging the snow removing device, accumulated snow on the solar panel is removed, sothat the photoelectric conversion efficiency of the photovoltaic panel in snowy weather is improved.

The invention discloses a corrosion inhibitor for a closed soft water circulating cooling water system and an application. Anti-corrosion protection is carried out on thermal equipment, so that the service life of system equipment in a closed soft water circulating cooling water environment is effectively prolonged. The corrosion inhibitor has the characteristics of being efficient, phosphorus-free and environment-friendly. The corrosion inhibitor is characterized by comprising a steel corrosion inhibitor and a copper corrosion inhibitor, wherein the steel corrosion inhibitor comprises triethanolamine borate, ascorbic acid and urotropine; and the copper corrosion inhibitor comprises benzotriazole.

The invention discloses a condenser steam jet vacuum system which comprises a condenser pipeline connected with a condenser, a steam ejector set formed by at least a steam ejector I and a steam ejector II, and a condenser set formed by at least a condenser I and a condenser II. Power steam inlets of the steam ejector I and the steam ejector II are connected into power steam. Steam is used as media of the steam ejector I, and supersonic jet is produced through a power nozzle, so a head cavity is vaccumized to extract steam-gas mixtures in the condensers, the steam-gas mixtures exported from the condensers are mixed with the power steam and then are ejected into the condenser I through the steam ejector I to be processed in a condensed mode and finally are sucked in by the steam ejector II to be reprocessed. The condenser steam jet vacuum system is simple in structure and low in transformation cost, and can thoroughly solve the problem of unit efficiency reduction brought by vacuum pump cavitation.

The invention discloses an automatic variant reversing mechanism, and belongs to the technical field of oil cylinder automatic control devices. A hydraulic automatic control device which is stable in work, small in pulse and good in reliability is provided. According to the technical scheme for solving the technical problem, the automatic variant reversing mechanism comprises a first power system, a first manual reversing valve, a second manual reversing valve and a second power system, the first power system and the second power system both provide hydraulic power for work components, the first power system controls the switching direction of the first manual reversing valve, the first manual reversing valve controls the oil input and output directions of the second power system, the second power system controls the switching direction of the second manual reversing valve, and the second manual reversing valve controls the oil input and output directions of the first power system. The two power systems of the automatic variant reversing mechanism can carry out alternate reversing with a fixed work period, continuous pressure output is guaranteed, the reversing pulse of a single power system is reduced, and reliability is greatly improved.

The invention discloses an automatic reversing mechanism, and belongs to the technical field of oil cylinder control devices. The automatic reversing mechanism solves the technical problem and achieves automatic reversing through the motion of piston rods of oil cylinders. According to the technical scheme for solving the technical problem, the automatic reversing mechanism comprises the first oil cylinder, the second oil cylinder, the third oil cylinder, the first piston rod, the second piston rod, the third piston rod and a manual reversing valve, a cylinder body of the first oil cylinder, a cylinder body of the second oil cylinder and a cylinder body of the third oil cylinder are all fixedly arranged, the second oil cylinder is arranged between the first oil cylinder and the third oil cylinder, the bottom end of the manual reversing valve is fixed, the manual reversing valve is a two-position four-way valve, and the manual reversing valve controls the motion direction of a second piston. The automatic control over the automatic reversing mechanism is achieved through the motion of the piston rods of the oil cylinders, and the explosion-proof security of equipment used under a mine is increased.

The invention provides a weighing-type transformer oil conservator, which is technically characterized in that four supports are arranged between a transformer oil conservator and a transformer oil tank, four four-bar hinge mechanisms are arranged at the middle parts of the supports, and four weighing sensors in two groups or two weighing sensors in a group are respectively connected into the four four-bar hinge mechanisms; and digital oil level gages for displaying oil weight are installed at the two ends of the transformer oil conservator. The weighing-type transformer oil conservator has the advantages that since four pressure sensors in two groups are arranged in hinges to weigh the oil conservator at the upper part of the sensors and the quantity of oil in the oil conservator, the accurate quantity of the oil in the oil conservator is determined, the digital display of the quantity of the oil in the oil conservator is realized and the long-term stable operation of a transformer and the oil conservator is ensured; and since a solar panel and a battery power supply are installed on the transformer oil conservator, the weighing-type transformer oil conservator is especially suitable for oil-cooled large-size and medium-size transformers.

The invention discloses an up-flow hydrogenation reactor and application thereof. The reactor comprises a reactor shell, and a floating hydrogen supply dust filtering layer and a catalyst bed layer are arranged in the reactor shell in the material flowing direction; a liquid-phase material inlet is formed in the bottom of the reactor shell, a reaction material outlet is formed in the top of the reactor shell, and a hydrogen inlet is formed in the side wall of the reactor shell. The floating hydrogen supply dust filtering layer is arranged in the reactor; hydrogen supply between catalyst bed layers and dust filtration are ingeniously combined, so the hydrogenation reaction degree can be effectively controlled, the reaction efficiency and the reaction uniformity are improved, meanwhile, abrasion among catalyst particles in the reaction process is greatly inhibited, catalyst dust is removed in situ, the service life of a catalyst is prolonged, rising of pressure drop of a catalyst bed layer is greatly slowed down, and long-period stable operation of a liquid-phase reactor is maintained.

The invention discloses a zero-emission treatment method and system for the landfill leachate. The advantages of anaerobism, TUF softening, DTNF, deamination membranes, AOP/BAC and DTRO processes areefficiently connected in series, targeted staged treatment is achieved according to the characteristic that the landfill leachate is high in concentration and difficult to treat, and the final effluent treated by the process is good in quality and meets the water supplementing standard of an open type circulating cooling water system: The reuse of urban recycling water-Water quality standard for industrial uses (GB/T 19923-2005).

The invention discloses a unit, and a method and device for controlling the unit to operate stably. The unit comprises a main controller and a proportional valve, wherein the main controller is used for sending an adjusting instruction to the proportional valve when the water temperature of a water inlet pipeline of a condenser is lower than the preset water temperature; and the proportional valveis located at a water inlet of the water inlet pipeline of the condenser, connected with the main controller and used for adjusting the proportion correspondingly after receiving the adjusting instrument so as to reduce the water inlet flow of the water inlet pipeline of the condenser. Through the unit and the method and device for controlling the unit to operate stably, the proportional valve can be utilized to reduce the water inlet flow of the water inlet pipeline of the condenser, so that the water temperature is increased, namely the condensation temperature is increased, it is ensured that the condensation pressure is within the suitable range, and thus long-term stable operation of the unit can be guaranteed.

The invention discloses a solar photovoltaic panel self-cleaning device and method for taking water from the air. The air temperature is reduced through semiconductor refrigeration, part of water vapor in the air is condensed on the refrigeration end face of a semiconductor to form water drops, and the water drops are collected in a water storage tank to serve as a photovoltaic panel self-cleaning water source. In order to maintain air flow, an air exhaust channel is installed on the top of the photovoltaic panel, and the outer surface of the air exhaust channel is coated with a black heat absorption coating. Under heating of the solar energy, the air exhaust channel is heated and forms a temperature difference with the air in an inlet channel, a chimney effect is formed, and the air is driven to be automatically exhausted from the top end of the exhaust channel. A wiping mode is adopted for self-cleaning, a rubber cleaning brush is driven by a motor, an electric valve is introduced to control the water outlet time of the water storage tank, the surface of the photovoltaic panel is deeply cleaned in cooperation with the cleaning brush, the water taking problem of self-cleaning of the photovoltaic panel is solved, and the device has the advantages of being wide in application range, capable of saving energy, high in automation degree and the like.

The invention relates to the technical field of wet nonferrous metallurgy extraction, and discloses a nickel-cobalt separation method of a nickel chloride solution. The method comprises the following steps: uniformly mixing 20% of N235, 14% of isooctanol and 66% of sulfonated kerosene to obtain an extracted organic phase; acidizing the extracted organic phase by using 5mol/L hydrochloric acid to obtain an acidized organic phase; and adding the acidified organic phase into a nickel chloride solution, carrying out nickel-cobalt separation through multi-stage counter-current extraction, and acquiring raffinate and a loaded organic phase, wherein the raffinate is the pure nickel chloride solution. The method solves the problems that when an existing solvent extraction method takes N235 as an extraction agent for nickel-cobalt separation and recovery, a large amount of nickel chloride crystals are generated in an extraction section, two-phase separation is difficult, fluidity is poor, and the N235 nickel-cobalt separation effect and continuous and stable operation of a production line are affected.

The invention discloses a sulfur recovery combustion furnace, and belongs to the technical field of chemical equipment. The sulfur recovery combustion furnace comprises a combustion furnace body, a gas burner, an acid air gun, an ignition gun, swirl vanes, a mixing chamber and a combustion chamber, wherein the gas burner penetrates through the middle of the acid gas gun and is coaxially arranged with the acid gas gun; an outlet of the gas burner and an outlet of the acid gas gun are both located in the mixing chamber, and the mixing chamber communicates with the combustion chamber; a fixed bracket is arranged between the outlet end of the gas burner and the outlet end of the acid gas gun, and two ends of the fixed bracket are fixed on the gas burner and the acid gas gun respectively; the swirl vanes are arranged inside the acid gas gun and sleeves the gas burner, and are fixed on the fixed bracket, and the ignition end of the ignition gun is arranged in the combustion chamber. The sulfur recovery combustion furnace can keep running for a long period of time without reduced sulfur recovery efficiency.

The invention relates to a tandem or parallel untreated sewage fiber and hair filter and belongs to the field of sewage waste heat use. According to the device, untreated sewage enters a filter chamber through a water inlet, in order to ensure the filter filtration amount, the untreated sewage is filtered through a tapered steel filter brush, which has a large water filter area and can contact with upward flowing sewage and scrape a large amount of fiber-type filamentous dirt having large buoyancy in a first filtering process, the filtered sewage is fed into a second filter chamber through a connection port, and the sewage is filtered through a cylindrical steel filter brush, which can contact with downward flowing sewage and scrape a small amount of sheet-type dirt having small buoyancy in a second filtering process, wherein in order to improve filtering effects, the filters can be connected in series through a connection port and the sewage can be repeatedly filtered. The filter filtering effects are improved along with increasing of filter use time. Along with continuous filter filtration, a filtering gap is reduced so that a part of dirt having sizes of less than or equal to 3mm can be intercepted. In order to ensure flow and prolong maintenance time, one or more filters can be connected in parallel to improve a filtering flow.