15results about How to "Prevent crusting" patented technology

The invention relates to the technical field of cement production, and provides a cement production line recycling system which comprises a circulation gas conveying pipeline, a combustion conveying pipeline, an oxygen conveying pipeline and a methanol mixing pipeline which are connected through pipelines, and the combustion conveying pipeline and the methanol mixing pipeline both communicate with the circulation gas conveying pipeline; the circulating gas conveying pipeline is sequentially connected with a clinker sintering system, a first heat exchanger, a first SCR (Selective Catalytic Reduction) device, a booster fan, a dust collector, a circulating fan and a water removal device; the clinker sintering system is provided with a feeding end, a combustion end and an exhaust end, and carbon dioxide generated by sintering cement clinker is mixed into circulating gas; the circulating gas is conveyed to the water removal device from the exhaust end in sequence, and meanwhile, after the water removal device removes water from the circulating gas, the circulating gas is conveyed back to the clinker sintering system to form cyclic utilization of the circulating gas. The method has the effect of recycling resources. In addition, the invention further provides a cement production line recycling method.

The utility model relates to the technical field of rotary kilns, and discloses kiln tail anti-blocking equipment which comprises a feeding port, an upper mounting block is fixedly mounted on the outer surface of the upper end of the feeding port, a waste liquid pipe is movably connected to the upper portion of the feeding port, and a lower mounting block is fixedly mounted on the outer surface of the lower end of the waste liquid pipe. The lower mounting block is movably connected to the upper portion of the upper mounting block, a mounting sleeve is movably mounted on the outer surface of the waste liquid pipe, an electric telescopic rod is fixedly mounted on one side of the mounting sleeve, a connecting sleeve is fixedly mounted on the outer surface of the upper end of the electric telescopic rod, and a base is fixedly mounted on one side of the connecting sleeve. A camera is fixedly installed above the base and movably connected to the upper portion of the waste liquid pipe. The rotary kiln tail structure effectively avoids material accumulation and blockage of the kiln tail, facilitates improvement of the use function of the kiln tail structure, facilitates normal work of the rotary kiln tail, and is simple in structure and convenient to operate due to the fact that the feeding port and the waste liquid pipe are movably installed.

The invention relates to the technical field of fireproof coatings, in particular to an environment-friendly PVC fireproof heat-insulation bottom coating for an automobile and a preparation method of the environment-friendly PVC fireproof heat-insulation bottom coating. The environment-friendly PVC fireproof heat-insulation bottom coating for the automobile is prepared from the following components in percentage by mass: 10 to 16 percent of diisononyl phthalate, 8 to 15 percent of phosphate, 2.5 to 6 percent of solvent, 1 to 3 percent of polyamide, 0.5 to 2 percent of zinc oxide stabilizer, 3 to 7 percent of calcium oxide, 0.1 to 1 percent of gas silicon, 0.1 to 0.5 percent of additive, 20 to 30 percent of PVC resin, 7 to 15 percent of inorganic silicate and the balance of filler, the sum of the mass percentages of all the components is 100%. The fireproof and flame-retardant performance of the environment-friendly PVC fireproof and heat-insulating bottom coating for the automobile can reach the V0 level, meanwhile, the environment-friendly PVC fireproof and heat-insulating bottom coating for the automobile has good heat-insulating performance and storage stability, and the problems that an existing PVC fireproof and heat-insulating bottom coating for the automobile is poor in fireproof and flame-retardant performance when the content of a flame retardant is insufficient; and if a large amount of flame retardant is added, the storage stability becomes poor.

The present invention relates to an environmentally friendly anti-skinning auxiliary agent and a preparation method thereof, and belongs to the technical field of water-based inks. The formula comprises modified chitosan oligosaccharides, polyether-modified polysiloxanes, polyvinyl alcohol, water-soluble malonate carbon quantum dots and deionized water as ingredients. Chitosan oligosaccharides have good water solubility due to their small relative molecular mass, and are easy to form a soft and uniform film layer, which effectively prevents ink from skinning and maintains wetness; by introducing chlorogenic acid, the antioxidant efficiency of chitosan oligosaccharides is significantly improved, while retaining its film-forming and moisturizing advantages. Polyether-modified polysiloxanes and polyvinyl alcohol jointly promote the rapid onset of ingredients, enhance stability and durability. The introduction of water-soluble malonate carbon quantum dots improves photostability and reduces photooxidation reactions. The auxiliary agent of the present invention has excellent anti-skinning efficiency, strong antioxidant properties and environmental protection, and most of the raw materials are derived from nature. No harmful solvents or catalysts are required in the preparation process, which conforms to the concept of green chemistry and is harmless to the environment and human health.

The utility model relates to the field of flue gas sampling and filtering, in particular to an automatic anti-blocking and anti-skinning multi-stage filtering high-temperature flue gas sampling device which comprises a scraper cylinder and a rotation driving mechanism used for driving the scraper cylinder to rotate, at least one scraper is arranged on the inner edge of the scraper cylinder, the inner edge of the scraper is attached to the outer edge of a secondary filter, and the outer edge of the secondary filter is attached to the scraper cylinder. According to the automatic anti-blocking and anti-skinning multi-stage filtering high-temperature flue gas sampling device, the surface of a secondary filtering device is prevented from being blocked and skinned by utilizing the continuous rotation of a scraper sleeve, and high-pressure and high-speed blowback gas is matched for blowing, so that automatic cleaning is realized, and the service life of a filter is prolonged; and multi-stage filtration is adopted, a matched analysis instrument is protected, and the service life is prolonged.

This utility model discloses a pure water tank for industrial sulfuric acid production and processing, including a pure water tank, multiple dilution tanks, and multiple pipelines. Each pure water tank is individually connected to each dilution tank via a pipeline. Each pipeline is equipped with a flow meter and a first switching valve. An inlet is located at the top of the pure water tank. Sulfuric acid concentration meters are installed on the dilution tanks. This utility model relates to the technical field of pure water tank equipment. This pure water tank for industrial sulfuric acid production and processing, by installing backwashing mechanisms on each water supply pipeline, can periodically flush the water supply pipelines (including the pure water tank), thereby flushing away trace amounts of acidic vapor that have invaded the inner wall of the pipeline, preventing corrosion of the pipeline inner wall and avoiding the problem of scaling. Furthermore, the wastewater after flushing is safely treated before being discharged, without polluting the environment.

The utility model discloses a roller press steady flow bin structure which comprises a bin body, a feeding pipe is installed on the top of the bin body, a supporting frame is installed on the upper portion of an inner cavity of the bin body, and one end of the supporting frame penetrates out of the bin body and extends out of the bin body. A set of rotatable gears are installed in the supporting frame, a conveying belt is connected between the gears in a transmission mode, a motor is installed on the portion, located outside the bin body, of the supporting frame, and the output end of the motor is coaxially fixed to one gear. According to the flow stabilizing bin structure of the roller press, the motor is externally arranged, and related driving parts are arranged in the supporting frame in a hidden mode, so that normal operation of the pressure reducing cone is guaranteed, meanwhile, the motor is liberated from the interior of the bin body, and the operation environment of the motor is greatly improved; and secondly, the anti-splashing cover structure is arranged at the top of the pressure reducing cone, the materials directly fall into the anti-splashing cover from the feeding pipe, the anti-splashing cover can prevent the materials from being thrown out, and therefore it is guaranteed that the materials flow out through the discharging channel.

The invention relates to the technical field of castable preparation, in particular to a preparation method of a novel anti-skinning high-temperature-resistant castable, which comprises the following steps: S1, taking 50-60 parts by weight of mullite, 20-25 parts by weight of corundum micro powder, 3-8 parts by weight of calcium aluminate cement, 1-3 parts by weight of water reducing agent, 2-5 parts by weight of silica powder and 8-10 parts by weight of modified carbon fiber as raw materials; s2, pretreating the corundum micro powder; s3, loading the modified carbon fiber to the surface of the pretreated corundum micro powder; s4, mullite, a water reducing agent, silica powder, calcium aluminate water and corundum micro powder loaded with modified carbon fibers are added into a stirrer, water is added, and the castable is obtained after stirring. The corundum micro powder is pretreated, so that the modified carbon fibers are orderly loaded on the corundum micro powder, the corundum micro powder and mullite are well combined, the toughness and the thermal stability of the castable are improved, and the phenomena of crust, falling and the like in the use process of the castable are prevented.

The utility model relates to the technical field of decomposing furnaces, and discloses a decomposing furnace structure with a plurality of air pipes. The decomposing furnace structure with the multiple air pipes comprises a decomposing furnace part assembly, a material pipe is installed at the upper end of the decomposing furnace part assembly, a pouring opening is formed in the upper end of the material pipe, an air cannon is installed on the right side of the material pipe, and a dredging checking assembly is installed at the upper end of the decomposing furnace part assembly. A connecting pipe is mounted at the upper end of the dredging and checking assembly, a spray gun is mounted at the upper end of the connecting pipe, an air pipe body is mounted at the lower end of the connecting pipe, a high-temperature industrial television is mounted in the air pipe body, and the mixing and conveying assembly is mounted on the left side of the dredging and checking assembly in a connected mode. The solid pump cannot be continuously started for disposal, and the machine-hour yield is low, so that subsequent materials cannot uniformly and stably enter the kiln, and the fluctuation of nitric oxide cannot be controlled, and the technical problems are solved.

The gluing device comprises a main box body and a glue spraying mechanism, the glue spraying mechanism comprises a main motor, a main shaft, a corrugated coupler, an outer shaft sleeve, a connector, a cylindrical valve body, a valve element rotor, a valve seat, a rotating motor, a protective sleeve and a gear sleeve, one end of the corrugated coupler is connected with an output shaft of the main motor, and the other end of the corrugated coupler is connected with one end of the main shaft; the outer shaft sleeve is movably sleeved outside the protecting sleeve and the main shaft, one end of the protecting sleeve is provided with a gear sleeve, the other end of the main shaft is connected with the valve core rotor through a connector, the cylindrical valve body is sleeved outside the valve core rotor, and a glue spraying cavity is formed between the cylindrical valve body and the valve core rotor; the valve seat is connected to the cylindrical valve body and is provided with a main glue spraying hole and a main water spraying hole; a first glue spraying hole is formed in the bottom of the glue spraying base, a second glue spraying hole is formed in the side edge of the glue spraying base, a high-pressure water spraying hole is formed in the bottom of the water spraying base, and the gear sleeve is in transmission connection with an output shaft of the rotating motor. The structure realizes uniform glue discharge.

The invention discloses a high-concentration waste gas incineration device, which relates to the field of combustion equipment and solves the problem of pretreatment before garbage incineration. The high-concentration waste gas incineration device comprises an incinerator shell, and the high-concentration waste gas incineration device also comprises: an automatic incineration mechanism, an incineration waste purification component and a garbage pretreatment component; the automatic incineration mechanism incinerates the garbage, and the automatic incineration mechanism is arranged at the top of the incinerator shell, the garbage pretreatment component is arranged at the middle position of the top of the automatic incineration mechanism, and the unsorted garbage is pushed to the bottom of the garbage pretreatment component to compress the garbage, and the incineration waste purification component is arranged on one side inside the incinerator shell, and the waste generated by the incineration of the garbage is purified; in the present invention, the garbage pretreatment component and the automatic feeding component cooperate to facilitate the pretreatment of the unsorted garbage, compress the space occupied by the garbage, and improve the incineration efficiency.

The invention relates to an environment-friendly anti-skinning auxiliary agent and a preparation method thereof, and belongs to the technical field of water-based ink. The formula comprises the following components: modified chitosan oligosaccharide, polyether modified polysiloxane, polyvinyl alcohol, water-soluble malonic acid carbon quantum dots and deionized water. The chitosan oligosaccharide has relatively good water solubility due to small relative molecular mass, so that a soft and uniform film layer is easily formed, the ink is effectively prevented from skinning, and the wettability is kept; by introducing chlorogenic acid, the anti-oxidation efficiency of chitosan oligosaccharide is remarkably improved, and meanwhile, the film-forming and moisturizing advantages of chitosan oligosaccharide are reserved. The polyether modified polysiloxane and the polyvinyl alcohol jointly promote the components to take effect quickly, and the stability and the durability are enhanced. Due to the introduction of the water-soluble malonic acid carbon quantum dots, the light stability is improved, and the photooxidation reaction is reduced. The additive has excellent anti-skinning efficiency, strong oxidation resistance, environmental friendliness and harmlessness, most of the raw materials are natural, no harmful solvent or catalyst is needed in the preparation process, and the additive conforms to the green chemistry concept and is harmless to the environment and human health.

The invention relates to the technical field of probiotic embedding production equipment, and discloses embedding type probiotic production equipment which comprises a tank body, a feeding pipe, a servo motor and a mixing unit. According to the embedded probiotic production equipment, a large-area and low-linear-speed stirring mode which is attached to the tank wall is adopted, materials are driven to perform gentle macroscopic circulation, meanwhile, an arc-shaped belt on the embedded probiotic production equipment generates mild radial guiding force to push the materials to the center, and the longitudinal mixing assembly utilizes forward and reverse spiral belts in opposite directions to mix the materials with the materials. Complex up-and-down convection with extremely low shearing force is manufactured in the central area of the tank body, a mixing dead zone is efficiently eliminated, global three-dimensional uniform mixing under low rotating speed and low energy input is realized, full dispersion and contact of probiotics and wall materials are ensured, the activity of thalli and a preliminarily formed emulsification structure are protected to the greatest extent, and the production efficiency is improved. The embedding efficiency and the product stability are improved.

The present application relates to the technical field of castable preparation, and particularly relates to a preparation method of anti-skinning high-temperature-resistant castable, which comprises the following steps: S1, taking 50-60 parts of mullite, 20-25 parts of corundum micropowder, 3-8 parts of calcium aluminate cement, 1-3 parts of water reducing agent, 2-5 parts of silicon micropowder and 8-10 parts of modified carbon fiber as raw materials according to weight fraction; S2, pretreating the corundum micropowder; S3, loading the modified carbon fiber onto the surface of the pretreated corundum micropowder; S4, adding the mullite, water reducing agent, silicon micropowder, calcium aluminate water and corundum micropowder loaded with modified carbon fiber into a stirrer, and adding water, and obtaining the castable after stirring. The present application makes the modified carbon fiber orderly loaded on the corundum micropowder by pretreating the corundum micropowder, ensures the good combination of the corundum micropowder and the mullite, improves the toughness and thermal stability of the castable, and prevents the phenomena of skinning and falling off during the use of the castable.

The present invention relates to a straw fermentation device for reducing the crusting rate, comprising a cylinder body and a cover body with an open top, a rectangular fermentation tank is arranged inside the cylinder body, the outer wall of the fermentation tank and the inner wall of the cylinder body are divided into a sediment area and a liquid collection area by a guide slope, and a liquid collection port is arranged at the lower end of the guide slope, and a filter is arranged at the liquid collection port; a pair of scrapers are connected to the bottom of the cover body, and the two ends of the scraper in the length direction are respectively abutted against the two opposite side walls of the fermentation tank, and the bottom of the scraper is lower than the liquid level of the fermentation tank, and a driving mechanism is arranged on the cover body, and the two scrapers can be synchronously moved away from or approached to each other under the action of the driving mechanism; a water pump is also arranged in the liquid collection area, and a return port connected to the water pump is arranged on the side of the fermentation tank. The present invention adopts a scraper to scrape off the scum, which can effectively prevent the scum from floating up and crusting again. In addition, an air guide pipe is arranged in the fermentation tank, which is conducive to the smooth discharge of biogas and improves the gas production rate.