60results about How to "Meet purification requirements" patented technology

The invention discloses a double-layer undercurrent artificial wetland landscape pond and method thereof for recovering and treating urban roof rainwater, relates to a landscape reservoir and a method thereof for recovering and treating urban rainwater, and aims to solve the problem that the rainwater recovery system cannot meet the requirements of continuously purifying and treating rainwater all the year around in northern cold-region cities. The double-layer undercurrent artificial wetland landscape pond consists of a landscape pond, upper layer horizontal undercurrent, a partition plate layer, lower layer horizontal undercurrent, a foundation layer, a water inlet regulating reservoir, a collection tank, a submersible pump, a circulating pipe, a drain pipe, a left water separation valve, a right water separation valve, a left filter wall, a right filter wall and a metal grille. The method specifically comprises the following steps of: 1, collecting rainwater; 2, coagulating and precipitating; 3, filtering; 4, performing ultraviolet sterilization; 5, injecting into the double-layer undercurrent artificial wetland landscape pond to perform deep processing; and 6, making the treated rainwater for later use. The pond and the method are mainly used for rainwater recovery and recycling and urban beautification of the northern cold-region cities.

The invention discloses a method for producing high purity nanometer zinc oxide by using steel plant dust. The method for producing high purity nanometer zinc oxide by using steel plant dust comprises the following steps of: carrying out leaching with an ammonia-ammonium carbonate solution as the leaching agent, adding 0.3-0.5kg of sodium fluosilicate into the leaching agent per cubic meter, sequentially carrying out ammonia pre-steaming and purification and impurity removal, and finally carrying out refining treatment after purification and impurity removal. According to the method, the ammonia process is used for treating steel plant dust, the existing ammonia process is adaptively improved so that zinc in the steel plant dust can be fully recovered, and nanometer zinc oxide with the purity of more than 99.7 percent and the grain diameter of 10-60nm can be obtained by using the method; the method has the advantages of low energy consumption and high efficiency, and thoroughly solves the problem of zinc load of steel plant dust as the leaching agent can be recycled, thereby meeting the requirement of purifying the toxic components including zinc and alkali metals and realizing good production circulation as well as recovering valuable iron and carbon resources of steel plants.

The invention discloses a method for producing high-purity nanometer zinc oxide by using ammonia process decarburization of steel plant dust. The method for producing high-purity nanometer zinc oxide by using ammonia process decarburization of steel plant dust comprises the following steps of: carrying out leaching with an ammonia-ammonium carbonate solution as the leaching agent, adding 0.3-0.5kg of sodium fluosilicate into the leaching agent per cubic meter to obtain a leaching solution, then adding 50-60kg white lime into the leaching solution per cubic meter to carry out heating decarburization, and carrying out purification and impurity removal and then refining treatment. According to the method, the ammonia process is used for treating steel plant dust, and the existing ammonia process is adaptively improved, the leaching speed and the leaching rate of zinc in the dust are improved, and zinc oxide with the purity of more than 99.7 percent can be obtained; the method has the advantages of low energy consumption and high efficiency, and thoroughly solves the problem of zinc load of steel plant dust as the leaching agent can be recycled, thereby meeting the requirement of purifying the toxic components including zinc and alkali metals and realizing good production circulation.

The invention discloses a method for producing high purity nanometer zinc oxide by using ammonia process of steel plant dust. According to the method, white lime of 3-5 percent of the mass of steel plant dust is added for activation before leaching, then leaching is carried out with an ammonia-ammonium carbonate solution as the leaching agent, 0.3-0.5kg of sodium fluosilicate is added into the leaching agent per cubic meter, and purification and impurity removal are carried out and then refining treatment is carried out. According to the method, the ammonia process is used for treating steel plant dust, the existing ammonia process is adaptively improved, and high purity nanometer zinc oxide with larger specific surface area can be obtained; and the method has the advantages of low energy consumption and high efficiency, and thoroughly solves the problem of zinc load of steel plant dust as the leaching agent can be recycled, thereby meeting the requirement of purifying the toxic components including zinc and alkali metals and realizing good production circulation.

The invention discloses a method for producing a high-purity zinc oxide by steel mill smoke dust ash ammonia method decarburization. The method includes that an ammonia-water-ammonium-bicarbonate solution is utilized as a leaching agent for leaching, 0.3-0.5kg of sodium fluosilicate is added into the per cubic meter of the leaching agent, and after the leaching, 50-60kg of slaked limes are added in per cubic meter of a leaching agent liquid to perform warming decarburization. According to the method, the ammonia method is applied to smoke dust ash treatment, prior ammonia methods are subjected to adaptable improvement, the leaching speed and the leaching rate of zinc in the smoke dust ash are improved, zinc oxide with a large specific surface area can be obtained, simultaneously the purity can reach above 99.7%, by means of the method, the energy consumption is low, the efficiency is high, the leaching agent can be recycled, the problem of zinc load in the steel mill blast furnace smoke dust can be thoroughly solved, the purifying requirements for harmful ingredients of zinc and alkali metal in the steel mill can be met, virtuous circle of production is achieved, valuable ferrum and carbon resources in the steel mill can be recycled, the ferrum and carbon are enriched, the energy is saved, and good economic benefits are achieved.

The invention relates to a smoke purifying device, in particular to a compound water mist electric field type purifier capable of generating a water mist electric field. The compound water mist electric field type purifier comprises a purifier shell, a hanging bracket is arranged at the top of the purifier shell, water mist generators and connectors made of insulation materials are arranged below the hanging bracket, a discharge electrode fixing frame is connected to the lower ends of the connectors made of the insulation materials, high-voltage electrostatic power supply leads are connected to the discharge electrode fixing frame, discharge electrodes distributed with needles are connected to the lower portions of the high-voltage electrostatic power supply leads, dust collecting electrodes combined with the discharge electrodes are connected to a dust collecting electrode support arranged on the lower portion of the purifier shell, the dust collecting electrodes and the discharge electrodes are arranged at intervals, and a smoke passage is formed between each of the dust collecting electrode and the adjacent discharge electrode. The compound water mist electric field type purifier has the advantages of simple structure, low production cost, small occupied area, high purification efficiency, capability of removing solid, liquid and gaseous pollutants in smoke, low resistance, low energy consumption, no condensate aggregation, avoidance of cleaning, low maintenance and operation cost, long service life and no fire hazard.

The invention discloses a method for producing high-purity zinc oxide through fume ash in steel works. Ammonia-ammonium bicarbonate liquid is used as leaching solvent to perform leaching; 0.3 to 0.5 kg of sodium fluosilicate is added in each cubic meter of the leaching solvent; before an impurity removal step, leaching liquid subjected to leaching is heated to 95 to 105 DEG C to be subjected to ammonia pre-steaming; and by applying ammonia process to the treatment of the fume ash in the steel works and performing adaptive improvement on the existing ammonia process, zinc in the fume ash in the steel works can be rapidly leached completely as far as possible, the zinc in the fume ash in the steel works can be sufficiently recycled, and the purity of zinc oxide obtained can reach more than 99.7 percent. The method has the advantages that the energy consumption is low; the efficiency is high; the leaching solvent is circularly utilized; the problem of zinc load in the fume ash in the steel works is thoroughly solved; not only the requirement of purification of noxious constituent zinc and alkali metal by the steel works is satisfied, and the virtuous cycle of production is achieved, but also valued iron and coal resources in the steel works are recovered, and iron and coal are enriched; and not only energy is saved, but also good economic benefit is created.

The invention relates to a preparation method of an ultra-high molecular weight polyethylene composite microporous membrane. The preparation method comprises the following steps: (1) carrying out desizing treatment on base cloth which is high-temperature-resistant cloth, then drying, and performing pretreatment with pretreating agents; (2) weighing ultra-high molecular weight polyethylene, diluents and antioxidants in parts by weight, melting and mixing by a double-screw extruder, performing hot-pressing combination on the mixture and the base cloth to obtain a composite jelly membrane by a continuous extrusion process or a gap type mold-pressing process; and (3) removing the diluents in the composite jelly membrane by extraction agents, drying and shaping to obtain the composite microporous membrane. According to the preparation method, the ultra-high molecular weight polyethylene enters the inside of the cloth sufficiently to form a penetrating network, the combined membrane has good penetrating property, high water flux and high mechanical property improved greatly, and the prepared microporous membrane can be used for production of foods, medicines, and ultrapure water, and can meet the requirements of separation, purification, concentration and purification.

The invention discloses a temperature swing adsorption gas purification device, and aims to solve the problems that regeneration gas required by the conventional temperature swing adsorption separation device is needed to be input from outside and high in consumption, and the device is high in operating cost. The device comprises a feed port, at least three adsorbers, coolers, heaters and a discharge port, wherein the feed port, the adsorbers and the discharge port are connected through pipelines; the coolers, the heaters and the adsorbers are connected through pipelines; adsorption towers are connected through pipelines; and valves are arranged on the pipelines. A small amount of regeneration gas is required, energy consumption is low, the device is flexibly operated, energy can be effectively saved, and production cost is reduced.

The invention relates to a gas purification method applied to a coal-based synthetic natural gas device. The coal-based synthetic natural gas device comprises a coal gasifier, a transformation heat recycling device, a purification device and a methanation reactor, wherein the purification device comprises a purification and desulfurization system and a purification and decarbonization system. The gas purification method is characterized by simultaneously desulfurizing transformation gas from an upstream device and decarbonizing crude methane product gas from a downstream methanation reactor, namely desulfurizing the transformation gas obtained by transformation of the transformation heat recycling device via the purification and desulfurization system and subsequently introducing the transformation gas into the methanation reactor to prepare the crude methane product gas, and removing CO2 in the transformation gas via the purification and decarbonization system to obtain the SNG (Synthetic Natural Gas) product. Compared with the prior art, the purification requirements of two raw material gases can be simultaneously met; the purification effect is excellent; meanwhile, the absorbent can be recycled, so that the cost is reduced.

The invention relates to the field of water purification, and discloses a water purification system and water purification equipment. The water purification system comprises a main pipeline, which issequentially connected with a first filtering core and a second filtering core, the first filtering core and the second filtering core are connected in series, the main pipeline is also connected witha switching pipeline, a switching valve is arranged on the switching pipeline, and with the switching pipeline, water in the main pipeline is switched between a first working mode and a second working mode through the opening and the closing of the switching valve, wherein the first working mode is that the water is sequentially filtered by the first filtering core and the second filtering core,and the second working mode is that the water is only filtered by one of the first filtering core and the second filtering core. According to the invention, with the water purification system and thewater purification equipment, the water yield can be maximized on the premise of ensuring of the water quality, and the user requirements can be well met.

The invention provides a solid-liquid separation and vibrating liquid-removing drying integrated device, and the device comprises a liquid phase collection storehouse, a drilling fluid circulating pot, a vibrating screen, a sucking disc, a liquid inlet pipe, a tee joint, a vacuum pump, a control valve, a liquid outlet pipe, a clapboard, a drilling cuttings collection storehouse, a screen cloth anda gate valve. Mechanical vibration and vacuum adsorption principles are used for the device, thus, solid phase moisture content of a solid-liquid mixture returned up from a shaft bottom is reduced after the solid-liquid mixture is subjected to solid-liquid separation and liquid-removing drying by the vibrating screen, thus, the solid-liquid mixture meets rock debris transportation requirements, pollution to environment caused by waste generated in a drilling process is reduced effectively, and the recycled drilling fluid is collected for cycle use in the drilling fluid circulating pot. The device has the advantages of being simple in structure, needing low energy consumption, being convenient to use, being mounted quickly, having high equipment reliability, needing low manufacturing costand occupying small area; moisture content of the treated drilling cuttings is not more than 60%, and the drilling cuttings meet drilling cuttings transportation reequipments; and the device is used for a drilling fluid solid phase control and no-landing integrated treatment system, and simplifies system constitution.

The invention discloses a method for producing feed grade zinc oxide through sodium chloride-ammonia combined leaching. The method comprises the following steps: leaching smoke dust of a steel mill, purification and dust removal, distilling ammonia and depositing zinc and drying and calcining, wherein when the smoke dust of the steel mill is leached, ammonium hydroxide, ammonium bicarbonate and sodium chloride are taken as leaching agents. The method has the advantages a sodium chloride solution is added to leaching liquid, the zinc leaching speed and leaching rate in the smoke dust are improved, the fact that the leaching rate of impurities, such as iron, is extremely low can be further guaranteed, the zinc depositing speed during ammonia seperation is further accelerated, the chemical components and structure of a product are changed, a solution can be completely used for performing circulation ammonia absorption leaching utilization after ammonia separating and zinc depositing, andthe cost is saved; an adopted technology changes the phase components of a product intermediate, low calcination temperature can be adopted, a feed zinc oxide product with the content of high bulk density being capable of reaching greater than 99.0 percent, and the method has excellent economic benefit.

The invention relates to a compound active additive and applications thereof. The compound active additive is a mixture composed of 50 to 75% of quaternary ammonium salt (A), 15 to 30% of imidazole (B), and 10 to 20% of azine (C). The provided compound active additive is used to deeply remove acidic components from acidic natural gas containing carbon dioxide and organic sulfur. The active additive is compounded with an alcohol-amine solvent before using, the addition amount of the additive is 1 to 10% of the solvent weight, the pH of the mixture is 11 to 12 at a temperature of 25 DEG C, and the final kinematic viscosity is 20 to 30 m2/s. The active additive can deeply remove hydrogen sulfide, carbon dioxide, and organic sulfur. The hydrogen sulfide content is less than 3 mg/m3, the carbon dioxide content is less than 50 mg/m3, and the organic sulfur content is less than 50 mg/m3 after application of the active additive. At the same time, the anticorrosive and antifoaming properties of alcohol-amine solvent are improved, and the thermal stability and chemical stability of the alcohol-amine solvent are not affected.

The invention discloses an extensible type protective door. The extensible type protective door comprises the protective door, a door beam, slide rails, a lower rail, a power mechanism and the like and is characterized in that the protective door is provided with two or more door leaves; the slide rails which are arranged on the door beam are corresponding to the door leaves; the number of the slide rails is more than two; the extensible type protective door is also provided with moving devices for the door leaves; a protective cover is arranged on the upper portion of the last door leaf. The extensible type protective door has the advantages of achieving synchronous operation of the three leaves due to the fact that three identical automatic door beams are organically combined together; leaving large room (more than 3500) for a device moving area when the protective door is completely opened due to the fact that the three door leaves are completely superposed; effectively satisfying an operating room requirement for cleansing when the protective door is completely closed due to the fact that reliable leakproofness of the protective door can completely isolate two adjacent space; effectively blocking harmful radiation of an X-ray radiated from a CT (Computed Tomography) to adjacent areas.

The invention discloses a method for removing heavy metal ions in high-salinity water by using hydrogen sulfide. The method comprises reaction equipment and a reaction process. The reaction equipmentcomprises a reaction kettle body, a stirring paddle penetrating through the kettle body is installed in the reaction kettle body, and the stirring paddle is composed of a flat blade paddle and a porous flat blade type turbine paddle. A porous sieve plate is arranged in the reaction kettle to divide the interior of the reaction kettle into a reaction area and a curing area; the reaction kettle bodyis provided with a liquid inlet and an air inlet; the liquid outlet is formed in the reaction kettle body corresponding to the curing area; an exhaust port is formed in the top of the reaction kettlebody. The high-salt solution and the hydrogen sulfide gas are violently stirred by a turbine of a stirring paddle in a bottom reaction area of the reactor, are in close contact with each other and fully react; and after the reaction is finished, the two phases enter the curing area for deep reaction and gas-liquid separation, separated unreacted gas enters a tail gas absorption system through anexhaust port, and liquid overflows out of the kettle through a liquid outlet. Heavy metal ions in the reacted high-salt aqueous solution can be reduced to 0.0005 g/L or below, and the purification requirement of the high-salt aqueous solution is met.

The invention discloses a method for advancedly removing molybdenum from a manganese sulfate solution. The method for advancedly removing the molybdenum from the manganese sulfate solution is carriedout according to the following steps of after a pH value of the manganese sulfate solution is adjusted, adding a molybdenum removal agent into the solution, and conducting stirring and filtering to obtain filter liquor, namely a purified manganese sulfate solution; and therefore, the requirement of purifying the manganese sulfate solution can be met, and in the molybdenum removal process, the solution does not need to be heated. The method for advancedly removing the molybdenum from the manganese sulfate solution has the advantages that the procedures are simple, the cost is low, the efficiency is high, no pollution is generated, the defects of existing methods are overcome, and the requirements of the molybdenum content of manganese sulfate for producing a high-purity manganese-bearing material are met.

The invention discloses an LED lamp for filtering formaldehyde. The LED lamp comprises an apparatus shell, extending leg devices are arranged on the outer side of the bottom of the apparatus shell ina left-right symmetric mode, the apparatus shell is internally provided with an suction chamber, physical filter net rings are slidably connected to the inner wall of the periphery of the suction chamber in a matched mode, a spraying direction switch device extending out of the outer end surface of a machine body is fixedly connected to the top end of the suction chamber, wherein the spraying direction switch device is internally provided with a driven shaft extending into the suction chamber, a pulling blocking device located at the left end of the spraying direction switch device is arrangedon the inner wall of the top end of the suction chamber and controls the driven shaft, when the air outlet direction is needed to be changed, the pulling blocking device is needed to be pulled by a user, and the suction chamber is internally provided with an air suction power box located at the lower end of the spraying direction switch device. The LED lamp for filtering the formaldehyde is simple in structure, convenient to operate, the air outlet direction and height of air after the air is purified according to the requirements, and meanwhile the professional ability of the equipment is improved through the triple filter mode.

The invention discloses an integrated purification method and device for CO and NOx removal of a gas boiler, and belongs to the field of treatment of gaseous pollutants. A return flue of the gas boiler is connected with a gas inlet of a catalytic reaction device through a boiler flue gas outlet, and a gas outlet of the catalytic reaction device is connected with a fan through a waste heat recoverysystem; a urea solution injection device (15) is arranged in the return flue, and the urea solution injection device is connected with a urea storage tank through a metering device and a control device; a guide plate, a CO oxidant layer and a denitration catalyst layer which are all vertical to a shaft are arranged in the catalytic reaction device sequentially to form a multi-stage reactor. The injection point of a denitration reductant is located in the return flue of the gas boiler within 300-500 DEG C, urea decomposition is facilitated, and decomposition product NH3 is uniformly mixed in arear flue section, CO and NOx are simultaneously removed by a CO oxidant and a denitration catalyst, denitration efficiency of the catalyst is improved, service life of the catalyst is prolonged, andclean and energy-saving emission is finally realized.