30results about How to "To achieve the purpose of circular economy" patented technology

The invention provides a steel cylinder filling device and method for high-purity arsine. The steel cylinder filling device for the high-purity arsine is characterized by comprising a first pipeline, one end of the first pipeline is used for being connected with a source gas steel cylinder, the other end of the first pipeline is connected with the upper end of a cooling coil, the cooling coil is placed in a cooling tank, the lower end of the cooling coil is connected with one end of a second pipeline, the other end of the second pipeline is used for being connected with a to-be-filled steel cylinder, a main pipeline is formed by the first pipeline, the cooling coil and the second pipeline, the second pipeline is connected with a branch pipeline, the branch pipeline is connected with a cold trap collecting steel cylinder and a vacuum pump, and the branch pipeline is further connected with a high-purity helium source and an exhaust gas discharging outlet. The arsine is filled in a liquid state, a filling system is needed to be maintained cleaning in the filling process, and the quality of the arsine cannot be influenced by the pipelines and the steel cylinders.

The invention discloses a preparing method of non-twist textiles or hollow textiles or highly-branched textiles and methods for recycling solute of alkali solutions. The preparing method of the non-twist textiles or the hollow textiles or the highly-branched textiles includes the following steps of a, preparing alkaline degradation sections; b, preparing blended spinning melt; c, carrying out spinning to prepare alkali-easily-dissolved degradation fibers, wherein the alkali-easily-dissolved degradation fibers include filaments, short fibers and fiber strips; d, preparing the non-twist textiles or the hollow textiles or the yarn-highly-branched textiles or embroider products. The soft and light textiles can be effectively prepared with the preparing method of the non-twist textiles or the hollow textiles or the highly-branched textiles. The methods for recycling the solute of the alkali solutions include the steps that the alkali solutions are obtained after the alkali-easily-dissolved degradation fibers are degraded, terephthalic acid is obtained after acid separation, and filtered wastewater meets a draining standard and is led into a factory biochemical treatment system. By means of the methods for recycling the solute of the alkali solutions, the alkali solutions obtained after the alkali-easily-dissolved degradation fibers are dissolved can be recycled, the environment-friendly effect is good, and the aim of circular economy can be achieved.

The invention relates to a method for manufacturing alkaline magnesium-rich pellet ore. The method comprises the steps of I pretreatment of recycled waste magnesia-calcium bricks, wherein a, primary breaking is carried out, and the waste magnesia-calcium bricks are broken into magnesia-calcium brick blocks; b, fine grinding is carried out, and the magnesia-calcium brick blocks are ground into magnesia-calcium brick powder; II batching, wherein iron concentrate powder and the magnesia-calcium brick powder are batched into batch mixtures, and 5.5-6.6 parts of the magnesia-calcium brick powder, 100 parts of the iron concentrate powder, 0.5-1 part of pulverized coal and 1.7 parts of bentonite are adopted according to the ratio; III pretreatment of the batch mixtures, wherein roll grinding is carried out on the batch mixtures; IV mixing, wherein the batch mixtures obtained through roll grinding are mixed; V pelletizing and screening, wherein mixed materials are pelletized and screened into qualified green pellets; VI drying, preheating and calcination, wherein the qualified green pellets are calcinated into pellet ore; VIII cooling, wherein the pellet ore is cooled to obtain the alkaline magnesium-rich pellet ore. The alkaline magnesium-rich pellet ore is produced through the waste magnesia-calcium bricks, the quaternary alkalinity of the pellet ore can be above 1.15%, and MgO is larger than or equal to 3.8%.

The invention discloses a prevention device and a prevention method used for blasting air shock waves in a drilling and blasting tunnel. The device comprises a plurality of baffle units arranged on the side wall of the tunnel; the baffle units are arranged on the side wall of the tunnel in a bilateral symmetry manner; each baffle unit comprises a shock-resistant and high temperature-resistant baffle; each baffle is fixedly arranged on the side wall of the tunnel through a switch hinge; each baffle can rotate around the revolution axis of the corresponding switch hinge; each revolution axis is provided with a damper for providing damping for the rotation of the corresponding baffle; each baffle unit can be opened or closed under the action of the corresponding switch hinge, i.e. when blasting is performed on a tunnel face, each baffle unit is in a closed state so as to stop the shock waves; after blasting on the tunnel face is ended, each baffle unit is in an opened state, traffic in the tunnel and other construction cannot be influenced.

A process for preparing the masonry cement from the cinder of life garbage includes such steps as proportionally mixing said cinder with silicate clinker, slag and gypsum, and grinding.

The invention discloses a production method for producing 15Cr color alloy steel plate with calcium-free chromium slag. The production method for 15Cr color alloy steel plate comprises the following steps: A. Utilizing solid waste produced by a chemical chromium salt production line, and using carbon as a reducing agent in an electric furnace Smelting to obtain chromium-containing cast iron; B. Refining with dephosphorized molten steel to reduce carbon and retain chromium in a converter, and pour into billets; C. Produce 15Cr alloy steel plates through hot rolling and cold rolling processes; D. The surface of the 15Cr alloy steel plate is ground, polished and textured; E. Color elements and active elements are added to the hot-dip 15Cr solution; F. The steel plate is placed in the solution for hot dipping. The invention uses the calcium-free chrome slag produced on the calcium-free roasting production line as the main raw material to produce the 15Cr color alloy steel plate. On the one hand, the secondary utilization of scarce resources is realized; economic purpose.

The invention provides a method for recycling iron-containing and zinc-containing solid waste, and relates to the field of metal solid waste treatment and resource utilization. The method for recycling the iron-containing and zinc-containing solid waste comprises the following steps that the iron-containing and zinc-containing solid waste is firstly smelted, and zinc oxide flue gas and kiln slag are obtained; the kiln slag is crushed, then first-stage ball milling and first-stage magnetic separation are carried out, and tailings 1 and first-stage concentrate are obtained; the first-stage concentrate is subjected to concentration magnetic separation, second-stage ball milling and second-stage magnetic separation, and tailings 2 and second-stage concentrate are obtained; the second-stage concentrate is subjected to gravity separation, and gravity separation tailings and gravity separation concentrate are separated out; the gravity separation tailings are subjected to third-stage magnetic separation, tailings 3 and third-stage concentrate are obtained, and the third-stage concentrate is filtered to obtain iron fine powder; and the gravity concentrate is filtered, dried and graded, and low-grade reduced iron powder and high-grade reduced iron powder are obtained. According to the method, the extraction rate of a zinc element and an iron element is increased, and maximization of economic benefits is achieved.

The invention provides a method for efficiently enriching rare precious metals from complex low-grade heat filter residues. The method comprises the following steps: performing first-stage normal-pressure preliminary leaching and second-stage normal-pressure desulfurization leaching on the heat filter residues; performing evaporation, concentration and crystallization on a first-stage desulfurization liquid to obtain a sodium thiosulfate product; performing pressurization oxidation leaching on second-stage desulfurization residues; and removing silicon, iron, barium, calcium magnesium, aluminum, complex silicates and the like from glass residues prepared from pressurized residues, thereby obtaining a high-grade product rich in precious metals. The method is simple in process, environmentally-friendly, free of generation of toxic waste gases, gas residues and like as well as free of usage of toxic reagents, thereby being favorable for environmental protection. The method is easy to operate, low in working intensity, high in efficiency and easy in production process control and capable of easily realizing the process automation. According to the method, a high-grade and good-quality precious metal concentrate in which the content of gold, silver and platinum group metals can be 9% to 15% is obtained; and the recovery rate of the precious metals can be more than 99%. Thus, the method provided by the invention can be easily matched with an extraction separation refining process of the gold and platinum group metals.

The invention discloses a method for preparing p-aminophenylacetonitrile by reducing p-nitrobenzeneacetonitrile by utilizing ammonium thiosulfate. The method comprises the following steps: putting p-nitrobenzeneacetonitrile into a mixed solution of an organic solvent and water and stirring p-nitrobenzeneacetonitrile until p-nitrobenzeneacetonitrile is totally dissolved; adding ammonium thiosulfate and carrying out reflux reaction after heating and stirring; naturally cooling the reactant to the room temperature after reaction is stopped, precipitating a solid and leaching and drying the precipitated solid, thus obtaining the final product, namely p-aminophenylacetonitrile. The method is lower in production cost, is convenient and safe to operate, is environment-friendly, is simple in equipment and is suitable for continuous production.

The invention relates to a preparation method for sesame-flavor white spirit, which comprises the following steps: (1) taking 15-60 parts of distilled yellow wine lees, adding 5-15 parts of rice and 20-50 parts of white spirit lees, after evenly mixing the raw materials, putting obtained mixture in a retort and steaming and stewing for 30-50 minutes under 0.05-0.2MPa, cooling the steamed mixture to room temperature, 2-5 parts of malt, adding 2-10 parts of yeast for making hard liquor and 0.1-0.5 part of solid yeast, evenly agitating, fermenting the obtained mixture for 24-72h at 28 DEG C-32 DEG C in a stacking way, putting the fermented mixture in a cellar and fermenting for 28-32 days, opening the cellar and adding 3-7 parts of rice chaff, putting the obtained mixture is in the retort and distilling, adding 2-5 parts of arrack spirit in spent wash, and turning on steam and slowly distilling to 60%v / v to obtain semi-finished product; and (2) putting the semi-finished product into a warehouse and storing in an earthen jar for more than two years, and adding softened water to blend into spirit with preset alcohol content to obtain the sesame-flavor white spirit. The invention has the advantages that the high-quality sesame-flavor white spirit with both flavor and taste can be obtained, the product added value is greatly improved and the economic benefit can be doubled.

The invention relates to an LDPE (low density polyethylene) grafting maleic anhydride waste water resourcelization recycling method which comprises the following steps: step 1, adopting LDPE grafting maleic anhydride waste water, adding solvent dimethyl benzene and LDPE powder in the waste water, and under the condition of backflow condensation, heating and stirring uniformly to obtain premixed liquid; step 2, adding MAH, surface-active agent and dispersing agent in the premixed liquid, heating and stirring uniformly to obtain reaction liquid; transfering the reaction liquid to a reaction vessel; step 3, heating and stirring the reaction liquid, then adding dimethyl benzene solution containing BPO in the reaction liquid, and heating continuously and stirring for reaction; step 4, stopping heating, stirring the reaction liquid, cooling and performing suction filtration to the reaction liquid to obtain solid, and washing and drying the solid to obtain powder; and step 5, adding acetone extractant into the powder, performing extraction in a soxhlet extractor, drying to constant weight, and then obtaining recycling reaction products. The method has the advantage that unreacted effective components in waste water can be fully utilized, so that the utilization ratio of raw materials and water resource can be improved.

The invention relates to a biologically active vegetative blanket without soil, comprising a feed-providing layer, upper layer rotundifolia net connected with the upper side of feed-providing layer, and lower layer rotundifolia net connected with the lower side, the three of which are fixed through sewing. The lower layer rotundifolia net is adhered with lining paper, feed-providing layer is filled with grass seed, and it is comprised with disintegrated straw, corn shell, coir silk and flax silk. The straw is rich in organic matter, nitrogen, phosphorus and potassium which provide nutrient for grass seed. The said blanket can be transported to construction site by way of winding drum. The invention overcomes problem existed in traditional replanting with soil and can protect the limited land resource in China.

The invention relates to a comprehensive biogas utilization system. The system includes a combustion gas generator set, a coal burning boiler, a biogas fermentation tank, a solar water heater, a water tank and a mixing pool. A gas inlet in the combustion gas generator set is connected with a water-gas separating tank, and the water-gas separating tank is connected with the gas outlet tube of the biogas fermentation tank; the water-gas separating tank is provided with a water conveying pipe, and the water conveying pipe is connected with the coal burning boiler; the combustion gas generator set is connected with national electrical network sequentially through a grid cabinet and a booster station; the gas discharge pipe in the combustion gas generator set traverses through the water tank and is connected with atmosphere; the water outlet pipe of the water tank is connected with the biogas fermentation tank; the coal burning boiler is provided with a hot water outlet pipe, and the hot water outlet pipe is connected with the biogas fermentation tank; the water outlet pipe II of the solar water heater is connected with the mixing pool, and the mixing pool is connected with a filter pool; the filter pool is connected with the biogas fermentation tank; and the biogas fermentation tank is connected with a biogas slurry pool. The system can realize the integration of culturing, biogas, biogas fertilizer and power generation in order to achieve the purpose of circular economy.

The invention relates to the technical field of waste gas treatment, in particular to a self-cleaning electrostatic degreasing device and a high-temperature oily waste gas treatment system and method. The self-cleaning electrostatic degreasing device includes a housing, at least two sets of electrostatic degreasing modules, and a cleaning device. The electrostatic degreasing modules are arranged in the housing separately from each other, and each group of electrostatic degreasing modules is equipped with a set of cleaning devices. The cleaning device includes an ultrasonic vibrator and a spring seat. The ultrasonic vibrator is set in the housing, and the electrostatic oil fume removal module is set on the spring seat. Deep cleaning is carried out to ensure its efficient and stable operation. The high-temperature oily waste gas treatment system has undergone multi-stage pre-treatment, which reduces the workload of the electrostatic oil fume removal device and recycles a variety of energy sources. The energy utilization rate is high, reaching purpose of the circular economy.

The invention discloses a processing method for aquatic byproducts, comprising the following steps: (1), taking byproducts, such as snails, mussels and clams; directly crushing the snails, mussels and clams to 20-1000 meshes so as to being prepared to raw materials; (2), adding 3-10 parts by weight of bran and 2-10 parts by weight of bean pulp in 80-95 parts by weight of the raw materials or onlyadding 5-20 parts of by weight of sugar in 80-95 parts by weight of the raw materials; uniformly mixing for standby; (3), adding bacillus liquid according to 5-20% of the materials; fermenting for 24-96 hours at 20 degrees centigrade; warming to 65-85 degrees centigrade for 2 hours; standby; (4), adding lactobacillus liquid according to 5-15% of the materials; fermenting for 24-108 hours at 50 degrees centigrade in a sealing manner; standby; and (5), drying the mixture at 60 degrees centigrade; and smashing the mixture. The products prepared in the invention contain major elements, trace elements and nutrient elements, so that the rate of absorption and utilization is effectively improved; the around ecological environment is protected; and the purpose of recycling economy is achieved.

The invention discloses a breeding method of benthic animals, which comprises the following steps: 1) building a pond; 2) making a culture medium; 3) inoculating; 4) managing the pond and water body. The culture base material used in the cultivation method of the present invention is derived from waste materials in agricultural production, has a wide range of sources, low breeding cost, and is environmentally friendly, and provides a new solution for waste materials in agricultural production. For the purpose of circular economy, the yield and quality of benthic animals cultured by this method are high.

The invention discloses a method for processing steel bottles of high-purity arsine. The method includes the steps that valve outlets in the tops of the multiple to-be-processed steel bottles are connected to a main pipeline through steel bottle connectors; a valve outlet of a source gas steel bottle containing arsine and a valve outlet of a cold trap collection steel bottle are connected to the main pipeline through steel bottle connectors; replacement is conducted on the main pipeline through high-purity helium, it is ensured that the pipeline is not contaminated, and then the main pipeline is vacuumized through a vacuum pump; under the condition that the vacuum pump keeps running, vacuum baking is conducted on the to-be-processed steel bottles, helium is then injected into the to-be-processed steel bottles, and then the helium is pumped out through the vacuum pump; a steel bottle valve of the source gas steel bottle is opened, and arsine gas is injected into the to-be-processed steel bottles; helium is injected into the to-be-processed steel bottles, and then the helium is pumped out through the vacuum pump; and steel bottle valves of the to-be-processed steel bottles are closed, and the to-be-processed steel bottles are completely processed at the moment. According to the method, the arsine gas used for passivation is recycled, emission of the arsine-containing gas is well reduced, and the aim of cyclic economy is achieved.

The invention relates to a preparation method of active carbon or an active carbon fiber and a preparation method of a purification medium. A nano zinc dioxide photocatalyst grows on the active carbon or the active carbon fiber, then the active carbon or the active carbon fiber is processed into an active carbon air purification filter screen or an active carbon fiber air purification filter screen, and the recycling of the active carbon or the active carbon fiber is realized by the catalytic action of an ultraviolet light source. The photocatalytic regeneration of the active carbon or the active carbon fiber can greatly reduce energy consumption of the traditional heat regeneration technology, reduces air pollution and energy waste, and facilitates energy conservation and emission reduction. Further, a photocatalytic technology is combined with an active carbon or an active carbon fiber absorption technology, a high-concentration reaction location is provided for photocatalysis in the air purification by using an absorption action of the active carbon or the active carbon fiber, and the photocatalytic efficiency is improved.