291results about How to "No protection" patented technology

The invention discloses a water-containing sludge treatment method which comprises the following steps of: conveying sludge into a sludge drying machine, heating and drying; conveying semi-dry sludge into a sludge incinerator; introducing air into the sludge incinerator after passing through an ignition device; enabling high-temperature smoke generated by incinerating sludge to pass through a waste heat recycling device, and then discharging the high-temperature smoke to the air through a smoke purifying and dust-removing system; and conveying residues generated by incinerating the sludge to an ash storage bunker. The semi-dry incineration of the sludge adopts the mode that the sludge directly passes through the sludge drying machine to reach a low-dryness and semi-dry degree and then enters the incinerator for being incinerated; and in the drying process, no full-dry sludge is generated, and the back-mixing operation is not needed. The water-containing sludge treatment method has the advantages that developed and reliable sludge drying and incineration devices are adopted, thus a system has high operation reliability; the dry sludge back-mixing operation is not needed for a semi-drying system, thus the dust quantity is low and the oxygen content and temperature are low during operation, the system is high in safety, and inert gas protection is not needed; and the whole system does not generate dust and odor during operation, and is environmental-friendly.

The invention relates to an energy-saving high-temperature counter radiation resistant inorganic coating for coating the liner of a kiln and a preparation method thereof. The coating mainly comprises oxides, such as cobalt oxide, zirconium oxide powder, aluminum oxide and chromic oxide, and silicon powder, silicon carbide, sodium silicate, aluminium dihydrogen phosphate, silica flour, graphite powder, boron oxide and other components and is prepared by grinding, soaking, heating reaction, stirring and mixing. The coating has high thermal shock resistance, high radiation utilization rate, high corrosion resistance, high cracking resistance, high oxidization resistance and high thermal stability. The inorganic coating of the invention has the advantages of allowing for normal construction without making special modification of the basal body of the kiln, along with small investment, quick response, no toxicity, no corrosion and desirable social and economic benefits.

The invention discloses an escalator safety system which comprises a monitoring relay, a processing module, a laser emitter and a laser receiver. The output end of the monitoring relay is connected into an escalator operation loop. The processing module controls the monitoring relay to be closed and opened. The laser emitter is provided with a laser emitting opening and arranged at the high end of an escalator and the emitting opening faces the low end of the escalator or the laser emitter is arranged at the low end of the escalator and the emitting opening faces the high end of the escalator. The laser receiver receives laser from the laser emitter and is in signal connection with the processing module. The laser receiver and the laser emitter which are matched are arranged at the high end and the low end of the escalator respectively. The laser emitter and the laser receiver are arranged in a well of the escalator. According to the escalator safety system, the problem that power is consumed due to the fact that infrared detectors are arranged densely or response is not in time due to the fact that infrared detectors are arranged sparsely is solved, one induction line can monitor multiple stairs at the same time, the detectors can achieve feedback immediately once the stairs fall down, the number of required detectors is small, and power consumption is low.

The invention relates to a method of preparing polyhydric alcohol by using crops straws, comprising the steps: counting by mass portion, 100 portions of organic solvent and 1 to 6 portions of catalyst are evenly mixed, then 15 to 40 portions of crops straws are added under 80 to 210 DEG C, and the polyhydric alcohol can be obtained by reacting for 60 to 240min. The method fully utilizes rich and reproducible agricultural residue; the hydroxyl value of the obtained polyhydric alcohol is 180 to 850mg KOH/g; crops straw catabolites of different contents and polyhydric alcohol of different hydroxyl values can be obtained by adjusting the production process and the portions according to requirements. The production process of the invention is simple and the invention can be directly used for synthesizing polyurethane foam plastics without the need of post-processing procedures of vacuum dehydration, product separation, etc.

The invention relates to a high-voltage distribution box based on a vehicle-mounted CAN bus network. The high-voltage distribution box comprises a high-voltage distribution box body, a high-voltage power supply part and a low-voltage control part, wherein the high-voltage distribution box body comprises a high-voltage distribution box housing and an insulating terminal; the high-voltage power supply part comprises a high-voltage connector socket, a copper bar, contactors, a pre-charge resistor, fuses, a maintenance switch and a high-voltage interface; the low-voltage control part comprises a low-voltage wire harness, a high-voltage distribution box control panel and a low-voltage interface. The high-voltage distribution box has the following superior effects: communication with a vehicle control unit is realized by a CAN bus, so that opening/closing of the contactors can be directly controlled; the CAN bus is excellent in anti-interference performance and stability and high in transmission rate; the high-voltage distribution box has the functions of low-voltage protection, overcurrent protection, starting current limitation, insulating detection, switch maintenance, fault code diagnosis, CAN communication and the like, effectively guarantees the vehicle and personal security and ensures normal running of the vehicles.

The invention provides total-biology-base benzoxazine resin and a preparation method thereof. A monomer of the resin is prepared by reacting dehydroabietylamine as a rosin derivative, biological phenol and paraformaldehyde at the temperature of 85 DEG C with a solution method for 20 hours. The preparation method comprises the following steps: cooling reactants to room temperature, washing with a sodium bicarbonate solution, washing with deionized water, and crystallizing with ethanol to obtain a purified monomer; performing ring-opening crosslinking on the monomer in a heating state or in thepresence of an added catalyst to generate the total-biology-base benzoxazine resin. The total-biology-base benzoxazine resin has the advantages of reasonable synthesis process, no need of inertial gasprotection, high product purity and environmental friendliness; compared with other biology-base benzoxazine and a part of petroleum-base benzoxazine, the obtained novel total-biology-base benzoxazine resin has great competitiveness on the aspects of ring-opening temperature and thermal stability, and shows high corrosion resistance.

The invention discloses a preparation method for a novel lithium vanadium phosphate/bamboo charcoal composite cathode material. The preparation method comprises the following steps of: uniformly mixing vanadium pentoxide, lithium hydroxide or lithium fluoride or lithium carbonate or lithium acetate, ammonium dihydrogen phosphate or phosphoric acid, salicylic acid or citric acid or ascorbic acid or tartaric acid or sucrose, and bamboo charcoal in proportion; evaporating water in a 50-80 DEG C water bath to form a sol; drying the sol in a vacuum drying oven for 8 hours at 120 DEG C to obtain a lithium vanadium phosphate precursor; cooling the lithium vanadium phosphate precursor to room temperature, grinding the precursor and putting the ground precursor into a die to prepare a cake under a certain pressure; putting the cake into a porcelain boat, and covering conductive carbon black (SP) powder on the cake; heating the cake in a microwave oven for a certain period of time; cooling the cake to room temperature; and taking the cake out, and grinding the cake to obtain a bamboo charcoal coated lithium vanadium phosphate/bamboo charcoal composite material sample, thus forming a bamboo charcoal connected conductive network. When used as a cathode material of a lithium ion power battery, the novel lithium vanadium phosphate/bamboo charcoal composite cathode material has the advantages of high capacity and magnification, long service life, low price and environmental friendliness.

The invention provides CuInS2 quantum dots, CuInS2/ZnS quantum dots and their preparation and application. A preparation method of the CuInS2 quantum dots is characterized by comprising the steps of 1, adding a copper-source compound, an indium-source compound and glutathione into water, adjusting pH to 7-10 to obtain mixed liquid A, and adding an aqueous solution containing a sulfur-source compound to obtain mixture B; 2, heating the mixture B to 70-100 DEG C, stirring at this temperature for 2-4 h, cooling, adding ethanol, centrifugally separating, and purifying to obtain the CuInS2 quantum dots. A quantum dot photocatalyst obtained herein has low toxicity, is able to produce hydrogen by water photocatalysis under zero co-catalysts, has good visible light absorption, and reaches about 10% of quantum efficiency in hydrogen production by photocatalysis at visible light band.

The invention discloses a double-system heat pump defrosting method and a double-system heat pump defrosting device. Two sets of defrosting mechanisms are arranged, when the temperature of evaporator fins is continuously lower than 0 DEG C and the ambient temperature is higher than 5 DEG C and lower than 10 DEG C, a fin evaporator 9a or 9b stops working in a heating loop and enters into a natural defrosting mode; when the temperature of the evaporator fins is continuously lower than 0 DEG C and the ambient temperature is lower than 5 DEG C, the fin evaporator 9a or 9b enters into a hot air defrosting mode, defrosting heat is provided for the defrosted fin evaporator (9a/9b) from high-temperature air discharged from a compressor (1b/1a) in another loop, and the defrosted fin evaporator (9a/9b) stops working in the heating loop. The phenomena of pause protection and liquid compression caused when an evaporator is defrosted are avoided, and the purposes that the energy is saved, the consumption is reduced, the cost is reduced, the defrosting time is shortened, and the operation is safe, stable and reliable when the ambient environment is lower than 0 DEG C are achieved. The defrosting time is only 1/4 of that of a conventional defrosting mode.

The invention relates to Cd-MOF based on 4,4'-dicarboxydiphenyl ether, wherein MOF is a cadmium metallic coordination polymer of which a repeating unit is [Cd2(oba)2(dmbpy)(H2O)].2(EtOH).4(H2O); oba in the chemical formula [Cd2(oba)2(dmbpy)(H2O)].2(EtOH).4(H2O) is 4,4'-dicarboxydiphenyl ether ligand; dmbpy is 3,3'-dimehtyl-4,4'-bipyridine; EtOH is an ethanol molecule. The Cd-MOF provided by the invention can be used as a drug carrier for effectively loading 5-fluorouracil, and can be also used as a gas adsorbing material for selectively adsorbing the molecule of a CO2 gas.

The invention belongs to the technical field of waste battery treatment, and particularly discloses a waste lithium ion battery recovery method. A to-be-recovered raw material containing a waste positive electrode active material and an auxiliary agent are roasted at 500-800 DEG C, and then water extraction treatment is performed; and the auxiliary agent is at least one of NaHSO4, KHSO4, CoSO4, NiSO4, MnSO4, NH4HSO4 and (NH4)2SO4. The method overcomes the disadvantages of a traditional recovery method, is simple, practical and economically feasible, realizes comprehensive utilization of wastelithium ion batteries, and is suitable for industrial production.

The invention relates to a Cd MOF (metal-organic framework) material capable of selectively adsorbing carbon dioxide gas and stable in water resistance. A chemical formula of the material is as follows: [Cd2(oba)2(dmbpy)(H2O)].2(EtOH).4(H2O), wherein oba represents 4,4'-oxy-biphenyldicarboxy, dmbpy represents 3,3'-dimethyl-4,4'-dipyridyl, and EtOH represents ethyl alcohol. 4,4'-oxy-biphenyldicarboxy and 3,3'-dimethyl-4,4'-dipyridyl are selected to synthesize a 3D MOF material with one-dimensional pores together with Cd under the hydrothermal condition. The Cd MOF material is stable in structure, and has strong water resistance, broad application prospect in the field of adsorptive separation of chemistry and chemical industry as well as the characteristics of being high in selectivity, high in adsorption capacity and resistant to water.

The invention relates to a Cd (II) metallic organic complex based on 2,5-furan dicarboxylic acid. The metallic organic complex is a cadmium metallic organic complex with a repetitive unit such as [(Me2NH2)2Cd2(FDC)3(H2O)2.(H20)4], wherein the FDC in the chemical formula [(Me2NH2)2Cd2(FDC)3(H2O)2.(H20)4] is a 2,5-furan dicarboxylic acid ligand with two H being deleted. The Cd (II) metallic organic complex provided by the invention is capable of emitting blue fluorescence; the fluorescent lifetime is 138.1ns; the Cd (II) metallic organic complex can be used for preparing a fluorescent material.

An LED blackboard is used for lighting a blackboard or a wall body and comprises an LED light source panel provided with an LED light source and a light shielding cover. The light shielding cover is of a shell structure, and the height of the light shielding cover is higher than that of the blackboard or the wall body to be lighted; one end of the light shielding cover is arranged at the periphery of the LED light source panel, a light outlet is formed in the other end of the light shielding cover, and the light outlet faces the blackboard or the wall body; the light shielding cover comprises an internal lateral plate close to one side of the blackboard or the wall body and an external lateral plate far from one side of the blackboard or the wall body; and the inner wall of the external lateral plate is used for reflecting light which emitted by the LED light source and under the blackboard or the wall body to the blackboard or the wall body. The LED blackboard lamp is high in light utilizing rate and can effectively avoid glare.

The invention discloses a method for preparing an onium salt compound: taking iodine simple substance, metal iodide, alcohol and a nitrogen-containing compound, mixing them in acetonitrile, and reacting for several hours under solvothermal conditions to generate a single crystal of the onium salt compound in situ. The method has strong applicability, wide source of raw materials, cheap and easy to obtain, high product purity and yield, simple reaction device, simple method, and no inert gas protection is needed in the reaction process.