31results about How to "Can be recycled" patented technology

The invention provides a compound method for restoring soil polluted by heavy metal. The compound method comprises the following steps that bracketplant is planted in the soil polluted by the heavy metal, and the bracketplant is overall removed after 85-95 days; a mixture of biological carbon base fertilizer and heavy metal activated bacterium liquid is applied into the soil; sugarcane is planted in the soil polluted by the heavy metal, the bracketplant is continuously planted next spring, the bracketplant is overall removed after 85-95 days and the sugarcane is overall removed in August or September; a mixture of the biological carbon base fertilizer and the heavy metal activated bacterium liquid is applied into the soil and mixed evenly, and seasoning is conducted for 75-80 days; and the steps from the first step to the fifth step are executed circularly and repeatedly until the content of the heavy metal in the soil is up to the safety standard. According to the compound method, the heavy metal absorption efficiency of plants is improved and the soil remediation effect is good; in addition, the compound method has the characteristics of being friendly to the environment, free of secondary pollution, high in practicability and the like.

The invention relates to an oil sludge carbon supported metal catalyst, and a preparation method and application thereof. The catalyst is prepared by taking oil sludge carbon as a carrier and CoFe2O4as an active component, wherein the supporting mass of the active component CoFe2O4 is 5-20%, and the specific surface area of the carrier is 100-120 m<2> / g. An oil sludge carbon based supported metalcatalyst CoFe2O4@OS is prepared by taking oil sludge carbon as a carrier and Co(NO3)2.6H2O and Fe(NO3)3.9H2O as precursors through an impregnation method, and the CoFe2O4@OS can be used as a heterogeneous catalyst to efficiently activate peroxymonosulfate (PMS) to generate free radicals to degrade pollutants in water. The carbon component in the catalyst is used as a carrier of metal oxides, so that catalytic sites are uniformly distributed, and catalytic activity and degradation efficiency of the system are improved. The oil sludge carbon based supported metal catalyst has the advantages ofhigh efficiency, convenience, wide pH application range, high stability, low catalyst preparation cost and the like, and has great potential in the aspect of pesticide wastewater treatment.

The invention relates to a furyl diacid monomer, soluble aromatic polyamide, repeatedly processable crosslinked polyamide as well as a preparation method and application thereof. The structural formula of the monomer is as shown in the specification. The diacid monomer disclosed by the invention is simple in preparation method, and the raw materials are rich in source and low in price; the involved furyl polyamide product is excellent in performance and excellent in solubility; according to the involved reversible covalent cross-linking, the cross-linked polyamide has excellent solubility in the processing link, and serves as a product to achieve enhanced performances (such as mechanical property, solvent resistance and the like). More importantly, the reversible cross-linking material canachieve the effects of repeatedly processing and utilizing high-performance polyamide materials and reducing the environmental influence and waste of resources and has significances for recycling thehigh-performance polyamide materials and the like.

The invention discloses a method for carbonylation synthesis of diaryl ketones through iron catalysis and belongs to the technical field of catalytic synthesis. According to the method, in a solvent alcohol or alcohol aqueous solution, and in the action of alkali, acid and iodide, an iron catalyst is added for catalyzing a direct cross-coupling reaction of an aryl halogenated compound, an aryl boron compound and a carbonyl source including haloform or carbon tetrahalide to prepare a diaryl ketone compound. The method for preparing a diaryl ketone compound through a coupling reaction is safe in carbonyl source and easy to treat and is cheap; the catalyst is available in sources and low in toxicity and is cheap; the reaction is free of ligand and good in activity; the reaction condition is mild and the selectivity is high; the substrates are available in sources and are stable; the functional groups of the substrates are good in compatibility and the substrates are wide in application range; and the reaction medium is green and can be reused. In an optimized reaction condition, the separation yield of a target product can reach 94%.

The invention relates to rare earth-containing foundry molding sand, which is prepared from the following raw materials by weight: 15-20 parts of coal gangue, 3-4 parts of vitrified micro-bead, 2-2.5 parts of calcium stearate, 220-240 parts of clay, 2-3 parts of calcium ricinate, 4-6 parts of dioctyl sebacate, 6-9 parts of diopside, 6-9 parts of limestone, 3-4 parts of rare earth, a proper amount of water, and 20-30 parts of an auxiliary agent. According to the rare earth-containing foundry molding sand of the present invention, the rare earth is used, such that the surface abrasion resistance of the cast can be increased; the molding sand has characteristics of particle shape, good gas permeability, good fluidity, good dispersion and recycling; the auxiliary agent of the present invention adopts alumina and other high temperature resistance materials, such that the auxiliary agent can not melt during casting, the adhesion of the clay particles can be prevented, and the recycling is easily performed; the clay is wrapped on the surface, and the binding force with the clay particles is strong, such that the molding sand plasticity is increased; the fluidity of the auxiliary agent is good; and the molding sand has characteristics of high strength, good cast surface quality and high production efficiency.

The invention relates to a preparation method of a catalyst for ultraviolet catalytic wet-type oxidation. The catalyst is a LaCoO3 perovskite catalyst formed by adopting La(NO3)3 and Co(NO3)2 as precursors and adopting citric acid as a complexing agent in a high-temperature calcining way by virtue of a sol-gel method. The catalyst can be sufficiently synergistic with the ultraviolet, under an acidic condition, the hydrogen peroxide is used as an oxidant to efficiently catalyze the oxidation of coal chemical waste water membrane concentrated solution at relatively low temperature and pressure,and the catalyst is controllable in structure, good in heat stability, recyclable, and high in environmental and economical benefits.

The invention discloses a process for purifying Cu<2+> impurity in zinc electrolytic solution with SO2 in flue gas and simultaneously producing cuprous oxide as a byproduct. The invention is characterized in that the process comprises adding zinc oxide into zinc leaching solution containing Cu<2+> to adjust the pH to 5-6; allowing flue gas containing SO2 and the zinc leaching solution containing Cu<2+> to react in a desulphurizing tower to get precipitants including SO4<2-> and Cu2O; stopping the reaction when the pH of the mixed reaction solution is assayed to be 2.5-3.5; after heating and heat preserving, filtering the mixed solution after reaction to obtain cupric-removed purified liquid and cuprous oxide filter cakes. The invention overcomes the shortcoming of low cost of the prior method for processing Cu<2+> contained in the zinc electrolytic solution and provides a new process which treats the waste with another waste, and can save energy and simultaneously produce cuprous oxide.

The invention discloses a full polyurethane type all-weather running track, which relates to the technology field of all-weather running track. The full polyurethane type all-weather running track comprises a base layer and a surface layer, wherein the surface layer is sprayed on the surface of the base layer. The proportioning of materials for laying the base layer of one square meter running track comprises 0.2 kg of base coatings, 2.5 kg of environment-friendly glues and 12.5 kg of EPDM particles. The base layer is 10 mm thick by the use of mechanical spreading. The proportioning of materials for laying the surface layer of one square meter running track comprises 0.5 kg of polyurethane pigment paste, 1.5 kg of EPDM particles and 1.5 kg of environment-friendly glues. The polyurethane pigment paste, the EPDM particles and the environment-friendly glues are mixed uniformly in proportion to be sprayed on the surface layer by the use of mechanical spraying and to be sprayed for three times in a forward direction, a reverse direction and a forward direction; each time the surface layer is sprayed with thickness being 1.0 mm, and the thickness of the surface layer is 3 mm. The full polyurethane type all-weather running track has the advantages of ultraviolet resistance, strong light exposure resistance, color fastness, excellent performance of nail resistance, wear resistance, compression resistance and durability, longer service life, short construction period and less manpower.

The invention discloses a dust remover for processing sandstone aggregate. The dust remover comprises a purification water tank and is characterized in that a dust suction pipeline is installed on theleft side of the purification water tank, a dust suction opening is formed in the top of the dust suction pipeline, a dust suction fan is installed in the middle of the dust suction pipeline, an airoutlet is formed in the right side of the purification water tank, the height of the air outlet is higher than that of the dust suction opening, a water tank dust removal device is installed in the purification water tank, dust collection electrodes are evenly installed at the bottom of the water tank dust removal device, each dust collection electrode comprises a dust collection electrode bar, dust collection electrode plates are evenly installed on the surface of each dust collection electrode bar, a rotary dust collection plate is installed at the bottom of the purification water tank, rotary dust collection electrodes are evenly installed in the middle of the rotary dust collection plate, a dust collection box is installed below a switch valve, and a dust collection electrode is installed at the bottom of the dust collection box. The dust remover has the characteristics of being high in practicability and capable of recycling dust.

The invention aims to provide a preparation and usage method of a fatty alcohol ethoxylation reaction catalyst. The catalyst is a highly-acid mesoporous molecular sieve MSU-S, and the silica-alumina ratio of the catalyst is in a range of 22:1-66:1; the dosage of the catalyst is 1%-20% of the mass of fatty alcohol, the operating temperature is in a range of 120-220 DEG C, and the operating pressure is in a range of 0.05-10MPa. The catalyst is high in activity, recyclable, environment-friendly, high in fatty alcohol conversion ratio and narrower in product molecular weight distribution, and a reaction process can be finished in any one of existing ethoxylation devices.

The invention aims to provide a preparation and usage method of a fatty alcohol ethoxylation reaction catalyst. The catalyst is a highly-acid mesoporous molecular sieve MSU-S, and the silica-alumina ratio of the catalyst is in a range of 22:1-66:1; the dosage of the catalyst is 1%-20% of the mass of fatty alcohol, the operating temperature is in a range of 120-220 DEG C, and the operating pressure is in a range of 0.05-10MPa. The catalyst is high in activity, recyclable, environment-friendly, high in fatty alcohol conversion ratio and narrower in product molecular weight distribution, and a reaction process can be finished in any one of existing ethoxylation devices.

The invention relates to a high temperature resistant molding sand, which is prepared from the following raw materials by weight part: 10-20 of loess, 20-30 of steel slag, 3-4 of beta-semi-hydrated gypsum, 5-6 of methyl sodium silicate, 1-2 of tea saponin, 4-7 of CaO, 5-8 of MnO, 5-8 of furnace black, 5-8 of titanium dioxide, 3-5 of polyethylene oxide, 200-220 of clay, a proper amount water, and 20-30 of an assistant. By using clay, the molding sand provided by the invention has appropriate particle size, good air permeability, good fluidity and good dispersion, also the casting surface is smooth, and the molding sand can be recycled. By using steel slag, the high temperature resistance of clay particles is increased, the molding sand is difficult to cake, and resources are saved. By using methyl sodium silicate, furnace black and polyethylene oxide, the molding sand not only has good caking property, but also has good fluidity and good high temperature collapsibility.

The invention relates to the technical field of metal processing, and discloses a metal laser cutting device capable of removing smoke and collecting powder. The device comprises a workbench, the inner side of the workbench is in threaded connection with a clamping block, and the inner side of a first rail is in sliding connection with a driving block; the lower side of the driving block is fixedly connected with a laser cutter assembly, a first rotating ring is rotationally connected to the outer side of the laser cutter assembly, and a clamping block is clamped to the outer side of the first rotating ring; a fixing ring is arranged at the outer side of the clamping block, and a smoke absorber is fixedly connected to the lower side of the first rotating ring. According to the metal laser cutting device capable of removing smoke and collecting powder, the first rotating ring is driven to rotate by 180 degrees to be clamped with the clamping block again through the stored force generated between the first rotating ring and the push rod through the spring assembly, so that the smoke absorber is driven to rotate by 180 degrees, then the laser cutter assembly moves leftwards, and the smoke absorber absorbs the generated smoke, and accordingly the effects of eliminating smoke and preventing the health of people from being damaged are achieved.

A container used in daily life, comprising a container body (1), a pressure channel composed of a pressure transmission channel (4), a material extraction channel (5), and an outflow channel (6) connected in series, the pressure channel being attached to the On the main wall of the container, one end is connected to the extraction channel, and the other end can be connected to the peripheral pressure component; the pressure transmission channel transmits the pressure exerted by the peripheral pressure component in the pressure transmission channel through the pressure transmission medium inside the channel, There is a one-way valve (11) on the wall of the extraction channel that allows the contents (2) in the container body to flow into the pressure channel, and the one-way valve is opened at the bottom of the container body: the outflow channel is for the content A channel that flows out of the container and prevents backflow of the contents. The container has a simple structure, can be produced on a large scale, has no excessively precise requirements for product structure, can reduce production costs, and has no excessively protruding parts, which is convenient for packaging and long-distance transportation, and reduces environmental pollution.

The invention discloses a transition metal modified montmorillonite phosphorus removing adsorbent prepared based on a cross precipitation method. The transition metal modified montmorillonite phosphorus removing adsorbent prepared based on the cross precipitation method is prepared by the following steps of cleaning montmorillonite with acetone, ethanol, tap water and deionized water to obtain a substance A, and modifying the substance A with a mixed liquid prepared from ammonium paratungstate, lanthanum nitrate, lithium niobate, cerous nitrate, sodium aluminate, aluminum nitrate, ammonium molybdate and ferric nitrate to prepare a substance J; and modifying the substance J with a mixed liquid prepared from aluminum nitrate, ferric nitrate, lanthanum nitrate and cerous nitrate to obtain a substance, i.e. the transition metal modified montmorillonite phosphorus removing adsorbent prepared based on the cross precipitation method. The transition metal modified montmorillonite phosphorus removing adsorbent prepared based on the cross precipitation method has the beneficial benefits that the transition metal modified montmorillonite phosphorus removing adsorbent prepared based on the cross precipitation method has the characteristics of high adsorption efficiency to phosphorus, rapidness in speed, large adsorption capacity, capability of regeneration and reuse and the like.

The invention discloses a process for purifying Cu<2+> impurity in zinc electrolytic solution with SO2 in flue gas and simultaneously producing cuprous oxide as a byproduct. The invention is characterized in that the process comprises adding zinc oxide into zinc leaching solution containing Cu<2+> to adjust the pH to 5-6; allowing flue gas containing SO2 and the zinc leaching solution containing Cu<2+> to react in a desulphurizing tower to get precipitants including SO4<2-> and Cu2O; stopping the reaction when the pH of the mixed reaction solution is assayed to be 2.5-3.5; after heating and heat preserving, filtering the mixed solution after reaction to obtain cupric-removed purified liquid and cuprous oxide filter cakes. The invention overcomes the shortcoming of low cost of the prior method for processing Cu<2+> contained in the zinc electrolytic solution and provides a new process which treats the waste with another waste, and can save energy and simultaneously produce cuprous oxide.

The invention provides a desulfurization desiccant and a preparation method thereof. The main point of the technical scheme is to use the molded 4A molecular sieve to simultaneously complete the metal component modification during the calcium exchange process. The preparation method of the invention is simple and easy, the raw materials are easy to obtain, no additional modification process steps are needed in the production process, the production is efficient and the product quality requirements are guaranteed at the same time. The compressive strength of the desulfurization desiccant produced by this process is nearly 30% higher than that of the raw material. 2 The adsorption capacity of S can be as high as 52mg / g, and the static water absorption can reach 23wt%. 2 S can be recycled and reused.

The invention discloses a cutting device for photoelectric optical fiber composite cable production. The cutting device comprises a cutting box; a feeding disc is installed at the front end of the cutting box; two sets of first motors are installed on one side of the cutting box; a conveying ring is installed on the inner side of the cutting box; a cutting assembly and a separating assembly are installed on the inner side of the cutting box; the cutting assembly is located on one side of the separating assembly; a collecting box is installed at the bottom end of the inner side of the cutting box; the cutting assembly comprises a damping stabilizing disc; a fixed ring and a movable ring are installed in the middle of the damping stabilizing disc; the movable ring is located on the inner side of the fixed ring; multiple sets of clamping arms are installed between the movable ring and the fixed ring; and two groups of friction rotating wheels are installed on the outer side of the movablering. The cutting effect can be improved in cooperation with high-speed rotation, a cut object can be evenly stressed, the cutting quality is guaranteed, and the reusability of various materials in the optical fiber composite cable is guaranteed.

The invention discloses a novel method for directly synthesizing asymmetric disubstituted urea compounds. The method comprises the step of adding a palladium catalyst into a solvent polyethylene glycol or a polyethylene glycol water solution under the action of alkali, an iodine compound and an oxidant so as to catalyze direct cross coupling reaction of primary amine and carbon monoxide, so as to prepare the asymmetric disubstituted urea compounds. The method for preparing the asymmetric disubstituted urea compounds through the coupling reaction has the advantages that the catalyst is wide in source and environment-friendly; a substrate is wide in source, cheap and easy to process; a carbonyl is stable in source and cheap and does not generate waste; a ligand is not required in the reaction, and the reaction activity is good; reaction conditions are mild, and the reaction selectivity is high; the substrate has good functional group consistency and is wide in application range; and a reaction medium is environment-friendly and can be circularly recycled. The separation yield of a target product can reach up to about 97% under optimized reaction conditions.

The invention relates to high gas-permeability mold core molding sand, which is prepared from the following raw materials by weight: 5-8 parts of silicon carbide fibers, 8-10 parts of potassium feldspar, 2-3 parts of carboxymethyl cellulose, 1-2 parts of polyethylene ethyl acetate, 3-4 parts of manganese oxide, 4-5 parts of a polyamide-imide resin, 200-220 parts of clay, 2-3 parts of sodium fluorosilicate, 1-2 parts of sodium disilicate, 10-15 parts of phosphorite powder, a proper amount of water, and 20-30 parts of an auxiliary agent. According to the high gas-permeability mold core molding sand of the present invention, the molding sand is granular and has characteristics of excellent gas permeability, excellent fluidity, excellent dispersion, low moisture absorption, good collapsibility, easy removing, and recycling; the auxiliary agent of the present invention adopts alumina and other high temperature resistance materials, such that the auxiliary agent can not melt during casting, the adhesion of the clay particles can be prevented, and the recycling is easily performed; the clay is wrapped on the surface, and the binding force with the clay particles is strong, such that the molding sand plasticity is increased; the fluidity of the auxiliary agent is good; the carbon fibers are adopted so as to increase the strength and the heat resistance of the molding sand; and the high gas-permeability mold core molding sand of the present invention is suitable for mold core production.

The invention relates to a furyl diacid monomer, soluble aromatic polyamide, repeatedly processable crosslinked polyamide as well as a preparation method and application thereof. The structural formula of the monomer is as shown in the specification. The diacid monomer disclosed by the invention is simple in preparation method, and the raw materials are rich in source and low in price; the involved furyl polyamide product is excellent in performance and excellent in solubility; according to the involved reversible covalent cross-linking, the cross-linked polyamide has excellent solubility in the processing link, and serves as a product to achieve enhanced performances (such as mechanical property, solvent resistance and the like). More importantly, the reversible cross-linking material canachieve the effects of repeatedly processing and utilizing high-performance polyamide materials and reducing the environmental influence and waste of resources and has significances for recycling thehigh-performance polyamide materials and the like.

The invention discloses a gas-liquid distribution system for absorbing flue gas based on a cavitation machine coupling aid. The gas-liquid distribution system comprises a multi-pollutant flue gas source, an absorption tower, a gas-liquid distributor, a U-shaped drying pipe, a flue gas analyzer, a particle collector, a cavitation machine and an absorption liquid collector; the lower part of the absorption tower is connected with the multi-pollutant flue gas source through a rotor flow meter, and the upper part of the absorption tower is provided with the gas-liquid distributor; the multi-pollutant flue gas source is also connected with the flue gas analyzer and the particle collector in sequence; the upper end of the absorption tower is sequentially connected with the U-shaped drying pipe,the flue gas analyzer and the particle collector; the gas-liquid distributor is connected with the lower part of the absorption tower through a water pump; the gas-liquid distributor is also connectedwith a cavitation machine; the cavitation machine is positioned on one side of the absorption tower; the absorption liquid collector is connected with the bottom of the lower end of the absorption tower. The invention also provides an absorption process of the system. The aid is high in utilization rate; various pollutants are removed, the pollutant removal rate is high, and the treated gas amount is large; the energy consumption is relatively low; the method is simple in process, simple in device and easy to operate.

The invention discloses a cutting device for the production of photoelectric optical fiber composite cable, which comprises a cutting box, a feeding tray is installed on the front end of the cutting box, two sets of motors are installed on one side of the cutting box, and two sets of motors are installed on the inside of the cutting box. A transport ring is installed, and a cutting assembly and a separation assembly are installed on the inside of the cutting box. The cutting assembly is located on one side of the separation assembly. disk, the middle part of the shock-absorbing and stable disk is equipped with a fixed ring and a movable ring, the movable ring is located inside the fixed ring, and several groups of clamping arms are installed between the movable ring and the fixed ring, and the outer side of the movable ring Two sets of friction runners are installed. The invention cooperates with the high-speed rotation to improve the cutting effect, and can make the cutting object bear uniform force, ensure the cutting quality, and ensure the reusability of various materials in the optical fiber composite cable.

The invention relates to an asphalt paver, in particular to an asphalt paver with a heat energy recovery function. The invention provides the asphalt paver with the heat energy recovery function, which can recover and utilize heat energy. An asphalt paver with a heat energy recovery function comprises an asphalt paver body, and windows are symmetrically arranged on the upper right side of the asphalt paver body front and back; the right wall of the lower part in the asphalt paver body is connected with the double-shaft motor; the right lower side of the asphalt paver body is connected with the first rotating shafts in a front-back symmetry manner; and the flat belt is wound between the outer sides of the two first rotating shafts and the asphalt paver body through belt wheels. According to the asphalt paver, hot air is driven to be close to the heat conduction plate through the asphalt paver body, so that the hot air flows upwards through the heat conduction holes in the heat conduction plate to be in contact with the water tank, and then the hot air heats water through the water tank, so that heat energy can be recycled.

The invention provides a method for restoring heavy metal contaminated soil through combination of biological activated carbon and plants. The method includes the steps that cotton is planted in the heavy metal contaminated soil and after the cotton is picked, the cotton is completely removed; biological activated carbon base fertilizer is applied to the heavy metal contaminated soil where the cotton is planted and the base fertilizer is evenly mixed with the soil and aged; willows are planted after cotton biological activated carbon aging is finished, the willows are completely removed after 10 months to 12 months; the biological activated carbon base fertilizer is applied in the heavy metal contaminated soil where the willows are planted again, and the base fertilizer is evenly mixed with the soil and aged; after willow biological activated carbon aging is finished, cotton is continuously planted, and cotton plants are completely removed after the cotton is picked; the steps mentioned above are cyclically repeated till the content of heavy metal in the soil reaches the safety standard. By the adoption of the method, the soil treatment effect is good, the environment can be beautified when the heavy metal contaminated soil is treated, and practicality is high.

The invention discloses a dust collector for sand and gravel aggregate processing, which includes a purified water tank, and is characterized in that: a dust suction pipe is installed on the left side of the purified water tank, and a dust suction port is installed on the top of the dust suction pipe , a dust suction fan is installed in the middle of the dust suction pipe, an air exhaust port is provided on the right side of the purified water tank, the height of the air exhaust port is higher than the dust suction port, and a water tank dust removal device is installed inside the purified water tank, The bottom of the dust removal device of the water tank is evenly equipped with dust collection electrodes, the dust suction electrodes include dust collection electrode rods, the surface of the dust collection electrode rods is uniformly equipped with dust suction electrode sheets, and the bottom of the purified water tank is equipped with a rotary dust collection device. The middle of the rotating dust collecting plate is evenly equipped with a rotating dust collecting electrode, a dust collection box is installed under the switch valve, and a dust collecting electrode is installed at the bottom of the dust collecting box. The present invention has strong practicability and can The feature of recycling dust for reuse.

The invention relates to a method for preparing large-grain smooth epsilon-HNIW crystals by a different-concentration process, belonging to the field of energetic materials. The method comprises the following steps: adding low-concentration HNIW into a counter solvent, and continuously stirring to precipitate crystals; adding high-concentration HNIW, stirring uniformly, and adding a large amount of counter solvent to precipitate the crystals from the solution; and filtering, washing and drying to obtain the large-grain smooth epsilon-HNIW crystals. The different-concentration process is utilized to prepare the large-grain smooth epsilon-HNIW crystals. The technique is simple to operate, has the advantages of low counter solvent consumption, recoverable counter solvent, mild reaction conditions, high safety and reliability, environment protection, high efficiency and the like, and can easily implement industrialization.

The invention relates to a movable wheeled pallet turnover box. The box is provided with a tray, and the bottom of the tray is provided with a plurality of piers; a telescopic steel member is connected with the outer sides of the piers of one end of the tray, and the telescopic steel member is connected with a mobile damping wheel; the outer sides of the piers at the other end of the tray are connected with the mobile damping wheel or connected with the mobile damping wheel through the telescopic steel member. The box solves the problems of high difficulty, high risk, high cost, low efficiency, easy damage and the like of front end logistics machinery handling and tail end logistics manual handling and the problem that the secondary packaging in the traditional logistics process cannot berecycled.