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

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 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 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 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 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 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 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 discloses a subnano wire adhesive, a preparation method and application thereof. The sub-nanometer wire adhesive can be used in a low-temperature environment or a water-containing environment, and includes: 0.8-1.2nm inorganic sub-nano wires and organic solvents, and does not contain other adhesive additives. The adhesive is non-toxic and non-corrosive, with high bonding strength and stable performance. It can be applied to various substrates and has a wide temperature range. It can not only show long-term stable bonding effect at low temperature and underwater environment, It can also be recycled, and the bonding performance will not be reduced or lost due to aging, and at the same time, it will not cause damage to the bonding surface of the substrate. It can be widely used in real life, especially for cold chain transportation and seawater operations. and other fields.

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.