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83results about How to "Can be large or small" patented technology

Process, system and device for waste biomass multi-production processing

The invention relates to a process, a system and a device for waste biomass multi-production processing, in particular to a waste biomass gasification and liquefaction treatment system. The gasification treatment is performed to the waste biomass, the gas is used for producing clean energy and chemical raw materials, the furnace slag is used for producing building materials or fertilizer and the waste heat is used for electric power generation and heat supply so as to realize the environmental-friendly municipal solid waste treatment and the ecological environment protection. The system mainlycomprises a gas-phase circulation gasification furnace, a flue gas circulation air tube, a flue gas circulation fan, a dust-removal/purifying tower and a synthesis reactor and is characterized in that the gas-phase circular reaction is performed to the flue gas in the gasification furnace, the water vapor and the gaseous matter generated during the pyrolysis to obtain hydrogen-rich synthetic gas,and meanwhile, the dioxin (violent in toxicity) is broken up; and the post treatment is performed to the hydrogen-rich synthetic gas to generate city gas, methanol, dimethyl ether or hydrogen. The system has the advantages of full gasification of the solid raw material, no pollutant discharge, extremely low exhaust emission and easy purifying treatment, and the device is flexible in size and is feasible for popularization.
Owner:上海格灵迈环境科技有限公司

Technology for treating high-arsenic copper material

The invention discloses a technology for treating a high-arsenic copper material. The technology comprises the steps that the high-arsenic copper material is subjected to crushing, grinding, sodium hydroxide mixing and oxidizing leaching, copper in the high-arsenic copper material is oxidized and left in residues in a residual mode along with lead and noble metal of gold, silver and platinum, arsenic enters a solution in a sodium arsenate mode, leachate is subjected to concentration and crystallization, a sodium arsenate product is obtained, and a concentrated solution returns to be subject to oxygen-pressure alkali leaching; leached residues are subjected to sulfuric-acid atmospheric pressure leaching, copper enters the solution in a copper sulfate mode, acid adjustment is conducted, and vortex electrolysis is directly conducted for extracting copper; electrodeposited waste liquid is recycled; and lead and the noble metal enter lead and silver residues, and valuable elements of Pb, Ag and Au are comprehensively recycled. The technology belongs to a clean metallurgy process, is low in equipment corrosion-resistant requirement, free of pollution to environment, easy to operate and high in comprehensive recycling degree of metal and has the advantages of being higher in practicability and adaptability to raw materials and the like.
Owner:CHENZHOU CITY JINGUI SILVER IND CO LTD

Preparation method of concentrated culture solution of nitzschia closterium minutissima allen et nelson and plastic barrel cultural method

The invention discloses a preparation method of a concentrated culture solution of nitzschia closterium minutissima allen et nelson and a plastic barrel cultural mode. The conventional preparation method of the culture solution is immediate preparation; the culture solution is prepared once for use at one time according to the use level, so that the conventional method is time-, work- and labor-consuming, troublesome to weigh and great in error. According to the invention, the concentrated liquor is adopted by the inventor for use for many times, so that the culture solution is simple to operate, convenient to store and convey, suitable for scaled, industrialized, commercialized and professional production, and very convenient. The inventor optimizes the conventional formula and supplements NaHCO3, 920 plant growth stimulin, human urine, sea mud extracting liquor, cow dung and sheep manure lixivia and the like, so that the culture solution is more complete, balanced and abundant in nutrition. As for the cultural mode, the inventor adopts a household mineral water barrel cultural mode to replace conventional open cement pit culture, so that the cultural method is easy to operate, difficult to be polluted, easy to master, agile and diverse, difficult to scratch, safe and reliable, good in transmission of light, low in cost and fast in growth, and the output is improved by 150%.
Owner:山东中科绿碳科技有限公司

Blue crab battery rearing and fattening method

The invention provides a cage rearing and fattening method of a blue crab, relating to an aquiculture method, providing a cage rearing and fattening method of the blue crab without land occupancy, with non-deteriorating culture substrate, various scale, convenient operation and harvesting ways, high survival ratio and rate of live weight growth and improvement of culture quality and goods grade. A rope is taken as a large rope for the structure of cage rearing, floaters are arranged every 3 to 5m, and both ends of the large rope are fixed down the bottom of a sea, with a line spacing between 4 to 6m; the crab cage is cylinder-shaped, with a height of 80 to 120cm and a diameter of 30 to 40cm, and separated into 4 to 6 layers; a small door is arranged for every layer to cast bait, and the crab cage is fixed on the large rope by a thin rope with a diameter ranging from 0.6 to 1cm. The fattening measures are that: fattening objects are female or male crabs with complete appendages and insufficient fatness or those mated female crabs with immature ovary, and a single cage is used for cage rearing for every crab and sunk to the seawater; the daily feeding quantity of low value shellfishes is controlled between 20 to 30 percent of the total weight of the blue crab, and that of small fishes and shrimps is controlled between 5 to 12 percent of the total weight of the blue crab.
Owner:XIAMEN UNIV

Hazard-free treatment system and method for electronic waste

The invention discloses a hazard-free treatment system and method for electronic waste. The system comprises a material preparation system, a pyrolysis system, a casting machine, an oxygen supply system and a flue gas purification system. The material preparation system comprises a disassembling device, a waste storage bank, a weighing device, a conveying device and a physical crusher, wherein waste printed circuit boards and waste liquid crystal display screens are stored in the waste storage bank. The pyrolysis system comprises an oxygen obliquely-blowing revolving furnace and a feeder. Thetreatment method comprises the steps of 1, collecting and storing the waste printed circuit boards, the waste liquid crystal display screens, scrap copper and scrap iron; 2, conducting material preparation, weighing, material compounding, mixing and crushing, and delivering the materials into the feeder; 3, conducting feeding; 4, conducting reductive smelting; 5, conducting slag dumping; 6, conducting blowing; 7, conducting drossing and ingot casting; and 8, discharging a product out of the furnace, and casting an alloy plate. The hazard-free treatment system and method have the beneficial effects that smelting, reduction and refining can be completed in the same furnace, an additional smelting furnace does not need to be added, and inertia slag capable of being piled up is generated; andthe hazard-free treatment system can be completely closed, and the environmental requirement is met.
Owner:甘肃华壹环保技术服务有限公司

Process for preparing biomass fuel by using rural town domestic waste and agricultural and forestry waste

The invention discloses a process for preparing biomass fuel by using rural town domestic waste and agricultural and forestry waste. The process comprises the steps of step one, waste leachate treatment and foul smell deodorization; step two, waste screening, sorting and coarse crushing; step three, non-organic matter magnetic separation, winnowing and fine crushing; step four, agricultural and forestry waste crushing and screening; step five, stirring of waste combustible materials, agricultural and forestry waste, sludge and water, compression molding, airing and biomass fuel obtaining; andstep six, waste organic matter adding of livestock and poultry manure, and organic fertilizer obtaining. According to the process, the biomass fuel can be directly used in a boiler, and the problem that the livestock and poultry manure pollutes the environment in a livestock farm is solved through the organic fertilizer; for the construction of waste treatment plants, the investment is small, thecost is low, and implementation is easy; the agricultural and forestry waste is collected with paying performed, so that the income of farmers is increased, and the pollution is reduced; the profit rate is high, and operating can last without government subsidy; the waste gas, the waste liquid and the waste residue are subjected to the environmental protection treatment so that new pollution can be avoided.
Owner:于继林

Photosynthetic bacteria fermentation technology under natural ecological condition

The invention relates to a photosynthetic bacteria fermentation technology under the natural ecological condition, which comprises the following steps of: preparing a disinfectant from high test hypochlorite, aluminum potassium sulfate and sodium carbonate in a weight ratio of 2:5:0.5; making a weight ratio of components of a photosynthetic bacteria culture medium, namely sodium acetate to sodiumthiosulfate to sodium bicarbonate to monopotassium phosphate, calcium chloride and magnesium sulfate 7:3:1.3:0.1:(0.04-0.05):(0.01-0.02); adding water for culture into a transparent container, adding0.1 weight percent of disinfectant, stirring, standing and filtering to obtain sterilizing clear liquid; adding the photosynthetic bacteria culture medium in an amount which is 1 weight percent basedon the water for culture into the sterilizing clear liquid to prepare culture solution, adding photosynthetic bacteria strain liquid into the culture solution, ensuring a weight ratio of the culture solution to the photosynthetic bacteria strain liquid 3:(0.9-1.1), and uniformly stirring; and filling in a fermentation container, reserving a gas chamber, arranging in a light place outdoors, and culturing at the temperature of between 15 and 40 DEG C for 2 to 5 days until the color is deep red. The method is low in cost, easy to operate, adjustable in scale, and high in success rate, does not require a fixed production field, and is particularly suitable for agriculture and independent culture of cultivators.
Owner:QINGDAO ZHONGREN PHARMA

Method for recycling tungsten carbide and metallic cobalt through waste tungsten-cobalt cemented carbide

ActiveCN106145114AWide applicabilitySolve the long process processProcess efficiency improvementCemented carbideCobalt
The invention relates to the technical field of recycling of waste tungsten alloy, and provides a method for recycling tungsten carbide and metallic cobalt through waste tungsten-cobalt cemented carbide. The technological process comprises the steps that waste tungsten-cobalt cemented carbide is cleaned and dried, vacuum cobalt extraction is conducted in a graphite crucible, tungsten carbide with a loose and porous structure is obtained in the crucible, loose and porous tungsten carbide is subjected to crushing and grinding to obtain tungsten carbide power, cooling crystallization is conducted in a cobalt crystallizer, and metallic cobalt powder is obtained. According to the method for recycling tungsten carbide and metallic cobalt through waste tungsten-cobalt cemented carbide, the cobalt extraction process is conducted in a high vacuum closed environment, smudging does not exist, impurities are removed through volatilization, a product is subjected to purification, and high-quality tungsten carbide can be obtained; the purity of cobalt powder extracted through a vacuum method is high, the condition of extracting cobalt is adjusted, and the cobalt powder with different particle sizes can be obtained. The method for recycling tungsten carbide and metallic cobalt through waste tungsten-cobalt cemented carbide is wide in applicability, simple in equipment, low in energy consumption, not prone to smudge, free of pollution, high in recovery rate, low in cost and flexible in scale, and a new way for recycling waste tungsten-cobalt cemented carbide in an efficient and green mode is opened up.
Owner:GANZHOU HUAXIN METAL MATERIAL CO LTD

Method and equipment for fluidized bed gasification and melting treatment of solid waste and hazardous waste

The invention discloses a method and equipment for fluidized bed gasification and melting treatment of solid waste and hazardous waste. The equipment comprises a shredder, wherein a discharge port ofthe shredder is connected to a conveyor, a discharge port of the conveyor is communicated with a feed port of a stokehole stock bin, and the stokehole stock bin is connected to a fluidized bed gasification furnace through a sealed feeder; an exhaust port of the fluidized bed gasification furnace is connected to a separator and a melting furnace, and an ash discharge port of the separator is communicated with a return feeder; an ash discharge port of the return feeder is connected to the fluidized bed gasification furnace; and a slag hole of a melting fire grate is connected to a water quenching slag box. According to the method, the solid waste and the hazardous waste are subjected to gasification reaction firstly, organic matter and carbon in the solid waste and the hazardous waste are changed into combustible gas, and ash fusion is achieved through the characteristics that gas-gas reaction is violent and high temperature is likely to be generated. Only furnace slag and vitreous bodies which are burnt at high temperature are generated in the whole process, so that harmless treatment of the solid waste and the hazardous waste is realized.
Owner:深圳市泽源环境科技有限公司

Closed circulation active carbon adsorption system

The present invention discloses a closed circulation active carbon adsorption system, wherein a closed active carbon adsorption column is adopted as a basic adsorption unit, and a plurality of the basic adsorption units are connected in series to form a closed circulation, which is provided for recovery of gold from a gold-containing solution. According to the system, the system can not be affected by landform and is especially suitable for a flatland layout, and no adsorption cascade table is required to be specially arranged, such that the cascade preparation manner of the traditional adsorption column is completely changed; the counter current carbon series connection manner is changed, and change of inlet and outlet manners of the extracted gold pregnant solution can be achieved only by adopting adjustment of control of valve opening and valve closing in a system pipeline. With application of the system of the present invention, quality and adsorption rate of gold loaded carbon in gold production can be completely improved, the cascade counter current carbon series connection manner in production can be changed, the adsorption operation manner without carbon series connection can be achieved, the labor intensity of workers can be effectively reduced, the process can be simplified, the gold recovery rate can be improved, the whole economic benefits of the mine can be improved, and the production cost can be reduced. In addition, the system has characteristics of safety, reliability, easy preparation, flexible operation and variable scale.
Owner:广西地博矿业集团股份有限公司

Desulfurization method for acid leaching process of manganese-rich slag

The invention relates to a desulfurization method for an acid leaching process of manganese-rich slag. In the desulfurization method, a sulfuric acid solution is used as a leaching agent and the mass percentage of sulfur in the manganese-rich slag is 0.55-2.0%. In the steps of the desulfurization method provided by the invention, three measures that pyrolusite is added and used as an oxidant, electrocatalytic oxidation is carried out by virtue of electrifying and the manganese-rich slag is added gradually in a small amount are utilized. By utilizing the three measures, the oxidation on negative divalent sulfur in the manganese-rich slag is enhanced and the oxidation reaction rate of the negative divalent sulfur is greatly increased, thus effectively inhibiting the hydrogen sulfide generation during the acid leaching process of the manganese-rich slag and reducing the environmental pollution. Meanwhile, in the desulfurization method provided by the invention, used pyrolusite powder is natural pyrolusite without any treatment, the raw materials have wide sources and low cost, the whole process is simple and convenient to operate, the reaction conditions are easy to control, the scale can be large or small and the desulfurization method has better economic and environmental benefits.
Owner:CHONGQING UNIV

Composite catalyst bed layer based efficient catalytic sodium hypochlorite reclaimed water treatment system and process thereof

The invention discloses a composite catalyst bed layer based efficient catalytic sodium hypochlorite reclaimed water treatment system. The system comprises an oxidation tower internally provided withan activated carbon catalyst bed layer and a molecular sieve catalyst bed layer. The invention further discloses a composite catalyst bed layer based efficient catalytic sodium hypochlorite reclaimedwater treatment process. A sodium hypochlorite activating effect of a catalyst bed layer is realized, the content of refractory organics in reclaimed water is effectively decreased, and deep treatmentof reclaimed water is realized. Catalyst utilization efficiency is greatly improved, sodium hypochlorite oxidation effects are remarkably improved, mechanical strength and surface antifouling performance are both improved effectively, catalyst loss in a utilization process is avoided, and stability of the process is effectively improved. By adoption of the process, catalyst utilization efficiencyis completely guaranteed, the catalyst bed layer can be used for treatment of various types of urban reclaimed water, a catalyst utilization period is prolonged, and applicability of the process is greatly improved.
Owner:HUANENG JIAXIANG POWER GENERATION CO LTD

Method for removing low-concentration ammonia nitrogen in water body through biological adsorption

The invention particularly relates to a method for removing low-concentration ammonia nitrogen in a water body through biological adsorption. The method comprises: preparing a biomass adsorbent material; loading metal ions on the biomass adsorbent material; and pouring the adsorbent material in wastewater or water body containing ammonia nitrogen components to immobilize the ammonia molecules in the aqueous medium onto the metal ion-loaded biomass adsorbent particle material so as to achieve the adsorption removal purification of the ammonia nitrogen components in the water body, wherein the adsorbed ammonia nitrogen molecules can be subjected to dilute acid desorption, concentration and recovery, and the adsorbent material can be repeatedly used multiple times. According to the present invention, the method has characteristics of simple operation, easy performing and no secondary pollution, the used raw and auxiliary materials are inexpensive and easy to obtain, the scale can be largeor small, the adsorbent material can be used in large-watershed water bodies, and can further be used in specially-designed reactors, and the method is the advanced technology used for treating low-concentration ammonia nitrogen water medium and having the application prospects due to the characteristics of high efficiency, economy, strong adaptability and the like.
Owner:南京博络金环保科技有限公司
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