237results about How to "Not easy to condense" patented technology

The invention discloses a method for manufacturing ultrafine powder from polytetrafluoroethylene through irradiation cracking. The method is characterized in that polytetrafluoroethylene raw materials are dried; the dried polytetrafluoroethylene raw materials are subjected to low-temperature cold treatment by liquid nitrogen; the polytetrafluoroethylene raw materials subjected to the low-temperature treatment are crushed into powder materials with the particle diameter being 100-1000mum by a crushing machine; the powder materials are subjected to sealed package under the gas protection effect; the packed powder materials are placed into an electronic accelerator irradiation system for irradiation cracking; and the irradiated powder materials pass through an air flow crushing machine to be subjected to air flow crushing and grading, and the ultrafine polytetrafluoroethylene powder with the particle diameter reaching 0.2-3mum is obtained. The method has the characteristics that the preparation process is simple, the control is easy, the energy consumption is low, the process continuous degree is high, the product performance is stable, the prepared ultrafine polytetrafluoroethylene powder has the characteristics that the dispersibility is good, and the agglomeration cannot easily occur. The prepared ultrafine polytetrafluoroethylene powder can be widely applied to the fields of paint, ink, dray powder lubricating agents and space flight and aviation appliances, and the material performance is obviously improved.

The invention discloses an experimental facility and an experimental method for the fire suppression effectiveness evaluation of additive-containing water mists. The experimental facility comprises an oxidizing agent flow quantitative supplying and conveying system, a combustible gas quantitative supplying and conveying system, a representation system, and a data acquisition and remote control system, wherein the oxidizing agent flow quantitative supplying and conveying system is composed of a frequency conversion vortex fan, a vortex shedding flowmeter, a small wind tunnel, an atomization device and a sprayer support; the combustible gas quantitative supplying and conveying system is composed of a columnar porous burner and an automatic gas distributing system; the representation system is composed of a water mist and flame action observation device, a flame temperature measurement device and a condensed phase grain size and speed measurement device. The experimental facility can realize quantitative supplying of air and combustible gas, the adjustability of the particle size distribution and the release amount of the liquid phase fire extinguishing agent and the adjustability of the concentration of additive, and the representation of the temperature of a position nearby a stagnation point, the particle diameter and the speed. The experimental facility can be used for screening high-efficiency water mist additives, quantitatively evaluating the fire suppression effectiveness for specific flames in the aspects of the variety and the concentration of the additive, and researching the physical and chemical mechanism of the action of the condensed phase fire extinguishing agent and the flame.

The invention discloses an integral process for washing and filtering terephthalic acid and water recovery, comprising the steps of: pumping a PTA suspension from a PTA slurry tank by a pressure filter to a filter unit chamber with a surface filtrate tube of a rotary drum connected with a control joint; after filtering, collecting the mother liquid in a mother liquid collecting tank; then overflowing in high position to a mother liquid flash drum in which 0.008-0.020MPa (A) vacuum is generated; generating clean steam at 5-60 DEG C by flashing the mother liquid, and at the same time generating 0.008-0.20MPa (A) vacuum in an air cooler so that the clean steam at 5-60 DEG C is condensed to clean water in the air cooler. The recycled clean water can be used as primary and secondary washing water of the pressure filter so as to save water and reduce consumption.

The invention discloses a fixed type flying ash sampling device of a coal-fired boiler. The fixed type flying ash sampling device comprises a sampling device, a cyclone separation and storage device, a fume flow measuring system and a heating device. The invention also provides a fixed type flying ash sampling method of the coal-fired boiler. The method comprises steps of: preheating and sampling a return gas pipeline and blowing sampling system pipelines. By utilizing the device and the system, the operation is simplified, and at the same time the characteristic that the flying ash sampling is good in representativeness is maintained, and sampling at a constant speed under different boiler loads is realized; and furthermore, the possibility that the flying ash is accumulated in the sampling pipeline is greatly reduced, the sampling system is large in fume pressure difference, and meanwhile the sampling pipeline is small in resistance, and thus the sampling system is good in adjustment performance.

The invention discloses a novel drying oven. The novel drying oven comprises an oven shell, an air exhaustion hole, an air inlet, a flat plate and a support used for placing the flat plate, wherein a tray used for placing dried materials is arranged on the flat plate; the flat plate is an air-permeable type flat plate; and an air inlet tube is arranged on a drying box for inlet nitrogen or carbon dioxide or inert gases. In the novel drying oven, steam evaporated from wet materials to be dried can be quickly exhausted through an air-permeable structure due to the adoption of the air-permeable type flat plate, and the mass transfer is rapid, so steam pressure of the evaporated steam is lowered, the steam is not easily detained and condensed, and the drying speed is greatly improved; and under the condition of introducing a proper gas such as nitrogen into the air inlet tube, permeable holes can obviously improve the flowing and distribution of the nitrogen in the drying oven, so the steam at all parts of the drying oven can be quickly taken away along with the nitrogen, and the drying speed is further quickened.

The invention relates to a nozzle device for building 3D printing and a control method. The device comprises a square port module and a steering module; and the steering module comprises a motor fixedframe, a steering motor, a coupling, a transmission shaft, a driving gear and a driven gear. The steering motor, the coupling, the transmission shaft and the driving gear are connected in sequence; the steering motor is mounted on the motor fixed frame; the driving gear is engaged with the driven gear; the square port module comprises a square nozzle, an inner ring, an outer ring and a sleeve; the square nozzle is mounted at the lower end of the inner ring; the outer ring is embedded at the upper end of the inner ring, and is connected with the sleeve; the motor fixed frame is fixed on the sleeve; and the driven gear is engaged in the inner ring. Compared with the prior art, the device precisely controls free steering of the square port module, can always maintain a tangential state between the angle of the square nozzle and a printing path, preferably solves the arc layering problem on the outer surface of a wall caused by printing through a circular port nozzle, and improves the overall surface quality of the wall.

The invention discloses a preparative gas-phase chromatograph device for separating and purifying a high-boiling-point volatile monomer component, comprising a column temperature tank, a shunting three-way valve, a sample collection device, a post-column heating device, a sample inlet, a vaporizing chamber, a separation system and a detection device, wherein the sample inlet, the vaporizing chamber, the separation system and the detection device are sequentially communicated, the shunting three-way valve, the vaporizing chamber and the separation system are arranged in the column temperature tank, the sample collection device and the post-column heating device are arranged outsides the column temperature tank, the inlet of the shunting three-way valve is communicated with the outlet of the separation system, one outlet of the shunting three-way valve is communicated with the sample collection device through a pipeline, and the post-column heating device comprises an insulation sleeve sleeved on a pipeline and a temperature control device used for detecting and regulating the temperature in the insulation sleeve. The temperature of the pipeline controlled by the post-column heating device is higher than that in the column temperature tank, thereby the high-boiling-point volatile monomer component is difficult to condense when transported to the sample collection device in the pipeline, mixing of components which sequentially flow out is efficiently avoided, and the purity of a preparative target object is enhanced.

The invention provides long-acting electret PP non-woven fabric. The long-acting electret PP non-woven fabric is mainly prepared from the following components in parts by weight: 30 to 35 parts of electret master batch, 36 to 44 parts of melt-blown polypropylene, 8 to 17 parts of surface-treated silicon dioxide, 3 to 5 parts of polyvinylidene fluoride, 5 to 7 parts of polytetrafluoroethylene and 3to 5 parts of PFA. According to the long-acting electret PP non-woven fabric and the preparation method thereof provided by the invention, after the non-woven fabric is treated by an electret process, the filtering performance and charge storage performance of fibers are greatly improved, the high temperature resistance and high humidity resistance of the non-woven fabric are effectively improved, meanwhile, the hydrophobic and oleophobic properties of the fibers are also improved, and the service life is prolonged. In addition, the long-acting electret non-woven fabric also has the functionsof antibiosis, disinfection, deodorization and the like.

The invention relates to an aluminum scrap recycling device which comprises a duplex packing auger, a crusher, a dehydrator, a magnetic separator, a dryer and a melting tank, wherein a first spreading plate lifter is arranged between the duplex packing auger and the crusher; a second spreading plate lifter is arranged between the crusher and the dehydrator; a third spreading plate lifter is arranged between the dehydrator and the magnetic separator; and a fourth spreading plate lifter is arranged between the magnetic separator and the dryer. The aluminum scrap recycling device is used for recycling aluminum scraps, is low in energy consumption, is high in production efficiency, is safe and reliable, and saves cost.

The invention discloses a high-efficiency diamond polishing agent which is prepared from the following raw materials in percentage by weight: 5-20 percent of ultra-precision diamond micro powder, 10-20 percent of ethyl orthosilicate, 20-30 percent of solvent, 0.2-0.8 percent of strong acid, 10-30 percent of surface active agent, 10-25 percent of wetting agent, 5-15 percent of dispersing agent and 0.1-5 percent of PH conditioning agent. According to the high-efficiency diamond polishing agent, the diamond micro powder is subjected to surface modification by using ethyl orthosilicate, so that a silicon dioxide coating layer is formed on the surface of the diamond micro powder, and during polishing, the coating layer plays a role in buffering the diamond micro powder on the inner layer; through performing multiple times of crushing and shaping on the diamond micro powder and improving surface modification process, the morphology of the diamond micro powder is closer to an octahedron; the prepared polishing agent has a better polishing effect to high-hardness metal materials such as high-carbon steel, also has a better polishing effect to crisp and hard materials such as Cr2O3, ceramics, jade and quartz, and is capable of completely preventing the damage on the surface of a material to be polished, and free from generating scratches, black points, and particle surface residues during polishing.

The invention discloses an ice storage method and device comprising an atmospheric tower and utilizing the cold energy of LNG. In the gasification process of LNG, a liquid nozzle is utilized to spray water onto a first heat exchange coil, water and LNG exchange heat directly, the LNG temperature rises to be close to the lowest work temperature of a refrigerant, then LNG exchanges heat with the refrigerant through a heat exchanger to be gasified, the cooled refrigerant transmits cold energy to water through a second heat exchange coil, and ice storage is performed in water of the atmospheric tower; at the same time, water which is not condensed in the atmospheric tower is mixed with an external supplement water source through a circulating pump, and then the mixture enters the liquid nozzle and returns to the bottom of the tower after passing through the first heat exchange coil. On one hand, the direct heat exchange between water and LNG can be carried out, on the other hand, a refrigerant delivery pipe is free of condensation blockage caused by a condition that the LNG temperature is far lower than the lowest work temperature of the refrigerant.

The invention provides environment-friendly interior cleaning fluid and a preparation method and using method thereof. The environment-friendly interior cleaning fluid is prepared from the componentsin parts by weight: 8-12 parts of an anionic surfactant, 4-8 parts of a nonionic surfactant, 1-3 parts of a cationic surfactant, 2-5 parts of an oxidization bactericide, 0.1-1 part of a silicone emulsion, 0.1-1 part of an active enzyme, and 70-85 parts of deionized water. The environment-friendly interior cleaning fluid is mild and does not hurt hands, further has strong bactericidal and bacteriostatic functions besides the ability to quickly remove dirt of vehicle interiors, 99% of escherichia coli, staphylococcus aureus and the like can be completely killed, mouldproof and mothproof effectsare achieved, the effects of sterilization and bacteriostasis on bacterium breeding are achieved, the foreign flavor in a vehicle can be eliminated, protective films are formed on the surfaces of theinteriors after cleaning, regenerated dirt is not prone to being coagulated, the interiors are clean as new, and meanwhile the protection effect on interior plastic parts and genuine leather is achieved; and all the adopted materials are environmentally friendly and degradable, the requirement of environmental protection is achieved, and after cleaning, a vehicle owner can drive in a clean and sterile environment with safety.

The invention belongs to the technical field of water heating devices, in particular to a drinking water heat exchange device and a drinking fountain which is provided with the heat exchange device. The drinking water heat exchange device and the drinking fountain are designed against the problem of waste of heat energy during the process from boiling drinking water to cooling the drinking water by people for drinking in the previous years. The drinking water heat exchange device of the invention allows water which is boiled by a heating component and supplementary cold water to be divided by the pipe wall of an inner pipe in an outer pipe and to carry out reverse flow by the arrangement of the inner pipe and the outer pipe, the heat exchange is carried by a dividing wall, the pre-heating of the cold water is carried out at the same time of reducing the temperature of the boiled water, thereby allowing the temperature to be gradually improved for easily boiling, the recovered heat energy is recycled in the continuous heating, thereby reducing the requirements on the power of the heating component; compared with the prior art, the drinking water heat exchange device has obvious energy-saving potential; the boiled water which is cooled after the temperature decrease can be directly drunk.

The invention discloses a full-sea-depth unmanned submersible. The full-sea-depth unmanned submersible is characterized in that low-cost easily-available lightweight common materials resistant to seawater corrosion and collision and having a certain structural strength are used for making a dimensional shell of the submersible; the interior of the submersible and all interior gaps of all equipment, facilities and components carried by the submersible are filled with liquid, so that a closed space type pressure resisting mode that an exterior hard pressure-resistant dimensional shell of a previous submersible bears all pressure is converted into a material-type pressure resisting mode that materials for manufacturing the dimensional shell of the submersible as well as the equipment, the facilities and the components carried inside the submersible bear pressure jointly. The full-sea-depth unmanned submersible has the advantages that the characteristics that liquid is incompressible, liquid with a roughly consistent density bears no larger pressure and the pressure is conductible are used, so that manufacturing cost of the submersible is reduced significantly, and the submersible is not restricted by a submerged depth.

The invention provides aluminum-coated graphite composite powder, an aluminum-graphite composite comprising the composite powder and a preparation method thereof. The aluminum-coated graphite composite powder comprises nanoscale aluminum powder or aluminum alloy powder, graphite and an adhesive, wherein the particle size of the nanoscale aluminum powder or aluminum alloy powder is 50-100nm; the particle size of the graphite is 20-70 microns; the graphite is a coated core; the adhesive is composed of epoxy resin and/or phenolic resin, diluted epoxy liquid, ethylenediamine and/or an NL curing agent; the nanoscale aluminum powder or aluminum alloy powder is coated on the surface of the graphite via the adhesive. Through the aluminum-coated graphite composite powder, the problems of the segregation of the graphite in the preparation process of the aluminum-graphite composite and the limitation of a process of chemically plating copper/nickel on the surface of the graphite can be solved.

The invention discloses a preparation method of modified precipitating method white carbon black, and relates to the technical field of rubber strengthening agents. The preparation method comprises the following steps: (1) adding liquid sodium silicate into a reaction kettle, and adding nano-silicon dioxide with the mass of 0.15 to 0.18 percent of that of the liquid sodium silicate into the liquidsodium silicate; (2) adding a sulphuric acid aqueous solution into the reaction kettle, and adding bentonite of which the surface is subjected to isocyanate esterification; (3) regulating the pH value by adopting ammonium hydroxide, adding a settling agent, and continuously stirring; (4) after the reaction is ended, performing water washing and suction filtering on a reactant, and drying to obtain the modified precipitating method white carbon black. Compared with the conventional precipitating method white carbon black, the physical and chemical indicators (the BET specific surface area, theoil absorption value, the particle size and the like) of the modified white carbon black prepared by the preparation method are all improved by over 10 percent, and the yield is 95 percent.

The invention discloses a gas-phase fluid bed polymerizing method combining condensation and cooling and the equipment. Inside or outside the reactor, adopt the combination of the cooling and condensing-state evaporation to remove reaction heat, the heat percentage of condensation/cooling is 65-75%. The temperature range of cooling medium is 0-50 deg.C. It improves the ability of the reactor to remove heat.

The invention provides emulsified asphalt, a preparation method of the emulsified asphalt, a brushing type rubber asphalt waterproof coating and a preparation method of the brushing type rubber asphalt waterproof coating. The emulsified asphalt comprises the following components by the mass percentage: 60%-63% of petroleum asphalt, 0.3%-2% of a fatty alcohol-polyoxyethylene ether sulfate emulsifier, 0.1%-0.5% of a pH value regulator, 0.1%-0.5% of a stabilizing agent, and deionized water. According to the technical scheme of the invention, the emulsified asphalt with good stability is prepared;the emulsifier contains an ethoxy group and a sulfonic group, and the anion and non-ion characteristics are realized at the same time; when meeting cations such as calcium ions and the like, the emulsified asphalt is not easy to condense, rubber latex with good stability is compounded by the emulsified asphalt, lumps are not easy to form during brushing, the waterproof construction quality is improved, the attractiveness is improved, and a brushing tool can be directly cleaned by clean water after being used up; the emulsified asphalt can be repeatedly used, resources are saved, and waste isreduced.

The invention discloses a sludge dewatering device which comprises a conveying mechanism, wherein the conveying mechanism comprises an auger; the diameter of the end part of the auger gradually shrinks to form an extraction part; a sludge nozzle is arranged at the end part of theextraction part; the conveying mechanism is connected with a sludge ball rolling mechanism; the sludge ball rolling mechanism comprises a cylindrical shell; theextraction part stretches into the shell; the projection of an axis of the sludge nozzle is located on an eccentric chord of the projection of the shell; a hot air nozzle is arranged on the side wall of the shell; an outlet of the hot air nozzle is located below the sludge nozzle; a heating cavity connected with the shell is encircled at the outer part of the auger; an air blower 1 is arranged at the top end of the shell and is connected with an air guide pipe; the air guide pipe 14 is communicated with the heating cavity. The scheme has the beneficial effects that according to the description of the scheme, the structure is simple; the design is reasonable; sludge is dried, smoke of thermal energy equipment for drying the sludge is purified, and germs in the sludge are eliminated.

The invention discloses an air conditioner having a breezeless function and a control method thereof and relates to the technical field of air conditioners. The air conditioner is invented for solving the problem that an air guiding plate of an air conditioner in the prior art easily produces condensation in a breezeless mode. The air conditioner having the breezeless function comprises a shell, wherein the shell is provided with an air outlet, an air outlet net assembly is arranged at the air outlet and comprises a flexible air outlet net and a driving device, and the driving device can drive the flexible air outlet net to spread or be put away. When the flexible air outlet net spreads, the flexible air outlet net blocks the air outlet, outlet air of the air conditioner is blown out of net holes of the flexible air outlet net. A humidity sensor is used for detecting the humidity of indoor air, and a control unit is connected with the humidity sensor and the driving device. The air conditioner can be used for indoor air regulation.

An Al-Ca-Mn-Ti-Fe alloy for deoxidizing and alloying in smelting steel is provided. The chemical components (in % by weight) are as follows: Al20-70, Ca2-30, Mn2-30, Ti0.5-5, Fe and impurity.

The invention belongs to the technical field of wastewater treatment and provides a high-protein wastewater treatment process. The high-protein wastewater treatment process adopts a mechanical grid, a regulating pond, a reaction pond, a flocculation settling pond, a hydrolysis acidification pond, a mixing pond, an EGSB reactor, an air-floated machine, a contact oxidation pond, a first settling pond, an active silt pond and a second settling pond. By means of the technical solution, the problems of poor high-protein wastewater treatment effect and high operation cost of a wastewater treatment process in the prior art are solved.

The invention discloses a double-layer anti-bacterial freshness protection package and a processing method thereof. The double-layer anti-bacterial freshness protection package comprises an outer layer and an inner layer. The outer layer is made of a paper material containing enteromorpha fibers. The mass ratio of the enteromorpha fibers and pulp in the paper material is 1:20. The inner layer is made of a plastic film. The plastic film is connected with the paper material through excessive plasticizing. The thickness of the paper material is 0.9-1.2 mm. The thickness of the plastic film is 0.3-0.6 mm. According to the double-layer anti-bacterial freshness protection package and the processing method thereof, the paper material and the plastic film are combined, so that the double-layer anti-bacterial freshness protection package both has the advantages of the paper material and has the advantages of the plastic film, the loss of moisture of fruits and vegetables can be prevented, the freshness protection package is breathable, and condensation of water drops is unlikely to occur; in addition, the double-layer anti-bacterial freshness protection package is not pervious to light and can be used outdoors; the enteromorpha fibers in the paper material and nano-silver materials in the plastic film both has the anti-bacterial function, so that food is prevented from being infected by microorganisms, and health and sanitation are guaranteed.