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43results about How to "Prevent re-aggregation" patented technology

Continuous segmented cracking equipment and technology used for waste and old tyres and capable of preventing generation of dioxin

The invention provides a continuous segmented cracking equipment and a technology used for waste and old tyres and capable of preventing generation of dioxin. The equipment comprises a raw material bin, a mixing feeding screw conveyor, a preheating furnace, a continuous thermal cracking device and an oil gas recovery device; the raw material bin is successively connected with the mixing feeding screw conveyor, the preheating furnace and the continuous cracking device; the preheating furnace successively comprises a heating segment, a sealing segment, a forward pushing segment and a discharging segment along the flowing direction of a raw material, the heating segment and the forward pushing segment are both provided with a screw pusher, and the screwing direction of the screw pushers in the heating segment and in the forward pushing segment are same, and the sealing segment is not provided with a screw pusher; and the continuous cracking device successively comprises a first cracking unit with the heating temperature of 340-360 DEG C, a second cracking unit with the heating temperature of 440-460 DEG C and a third cracking unit with the heating temperature of 540-560 DEG C. The equipment and the technology are capable of effectively preventing generation of dioxin in the process of processing waste and old tyres, improving the activity and the quality of carbon black, and realizing continuous cracking production of waste and old tyres.
Owner:中机国宏高分子技术研究(北京)中心

Soft-pellet creep feed and preparation method thereof

The invention discloses a soft-pellet creep feed and a preparation method thereof, and belongs to the field of feed formulation design and feed processing techniques. The preparation method comprises the following steps: mixing and bacillus subtilis and pickled vegetables fermentation liquor, performing fermentation in sequence to form fermented soybean meal and rice which are taken as main raw materials; adding steam fish meal, blood plasma powder, soybean meal and the like in a matched manner; utilizing a soft pelletizer to prepare pellet materials through ultramicro smashing; utilizing a syrup spray device to uniformly spray syrup on the surfaces of the pellet materials. The creep feed provided by the invention is full and balanced in nutrition, is easy to digest and intake, has stable quality, and is subjected to multiple fermentation. Moreover, feed inducing performance, soft protection performance and nutrition full value performance are improved, as a process of combining a soft manufacturing system and the syrup spray system is adopted; the incidence of hardening of medium-sized pellet feed during the preservation process is reduced; compared with a dry pellet feed, the loss of nutritional ingredient during the granulating heating and drying process is avoided, and the palatability of soft pellet feed is kept well.
Owner:LIAONING WELLHOPE AGRI TECH

Porous medium two-phase flow shell-and-tube heat exchanger and stabilization device thereof

The invention provides a two-phase flow shell-and-tube heat exchanger which comprises a shell. Sealing heads are arranged at the two ends of the shell, at least one sealing head is provided with a two-phase flow fluid inlet pipe, and a porous medium two-phase flow stabilization device is arranged in the fluid inlet pipe; the two-phase flow stabilization device comprises a porous medium core which is formed by connecting a plurality of stick-like objects; and the stick-like objects are crossed and welded in the X,Y and Z three-dimensional direction to form a porous medium structure with through holes. The passive two-phase flow stabilization device with the vibration attenuation and noise reduction function can separate two-phase flow into a liquid phase and a gas phase under the condition of being independent of external power or power sources, the liquid phase is divided into small liquid groups, the gas phase is divided into small bubbles, backflow of the liquid phase is restrained, smooth flowing of the gas phase is promoted, the effect of stabilizing flow is achieved, and the effects of vibration attenuation and noise reduction are achieved.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Continuous thermal-cracking method and apparatus for waste and old tires

The invention provides a continuous thermal-cracking method and an apparatus for waste and old tires. The method comprises the following steps: (1) preheating waste and old tire at 230-250 DEG C for 15-25 min, and under a vacuum condition, extracting and removing a gas generated in the preheating process; (2) heating the material obtained in the step (1) to 340-360 DEG C, and performing cracking at 340-360 DEG C for 8-12 min to enable natural rubber to be cracked, and under a vacuum condition, extracting and removing a gas generated in the cracking process; (3) heating the material obtained in the step (2) to 440-460 DEG C, and performing cracking at 440-460 DEG C for 8-12 min to enable cis-1,4-polybutadiene rubber and styrene-butadiene rubber to be cracked, and under a vacuum condition, extracting and removing a gas generated in the cracking process; and (4) heating the material obtained in the step (3) to 540-560 DEG C, and performing cracking at 540-560 DEG C for 8-12 min to enable carbonaceous sediment on the surface of carbon black to be cracked, and under a vacuum condition, extracting and removing a gas generated in the cracking process. The method and the apparatus are capable of effectively removing sediment on the surface of carbon black, improving the activity and the quality of carbon black, and realizing cracking continuous production of waste and old tires in a low energy consumption way.
Owner:中机国宏高分子技术研究(北京)中心

Soft particle milk replacer containing high fructose corn syrup and preparation thereof

The invention discloses a soft particle milk replacer containing a high fructose corn syrup, belonging to the technical field of a feed formula design and feed processing. The soft particle milk replacer is prepared by the following steps of: taking a compound fermented soybean meal which is prepared by sequentially mixing bacillus subtilis and a pickle fermentation solution to ferment, and rice as main materials; adding steam fish meal, flour, a peeled soybean meal and the like for match; carrying out ultrafine crushing on the materials and preparing particle materials by using a soft granulator; uniformly spraying a composite syrup prepared from dissolvable components including emulsified fat powder, whey powder, milk powder, white granulated sugar, mycose, soyabean lecithin powder, calcium formate and the like to the surface of the particle materials by using a syrup spraying and dripping device. The nutrition of a product is fully balanced and the nutrition is complete; the soft particle milk replacer is easy to digest and absorb after multiple times of fermentation; the quality is stable; a process of combining a soft granulation system with a syrup spraying and dripping system is adopted so that the occurrence that particles become hard in a storage process of the particle feed is reduced; compared with a dry particle feed, the soft particle milk replacer has the advantages that the loss of the nutrition in a granulation heating and drying process is avoided, and the good palatability of the soft particle feed can also be kept.
Owner:LIAONING WELLHOPE AGRI TECH

Two-phase flow shell and tube heat exchanger and stabilizing device thereof

The invention provides a two-phase flow shell and tube heat exchanger and a stabilizing device thereof. The two-phase flow shell and tube heat exchanger comprises the sleeve type two-phase flow stabilizing device arranged on a fluid inlet pipe and / or a fluid outlet pipe of the heat exchanger. The two-phase flow stabilizing device comprises a core body, the core body comprises a plurality of concentric pipes and a plurality of fins, and the fins are connected with the adjacent concentric pipes. According to the two-phase flow shell and tube heat exchanger and the stabilizing device thereof, the passive two-phase flow stabilizing device with vibration and noise reduction functions can divide two-phase fluid into a liquid phase and a gas phase under the condition of not relying on external power or power sources, the liquid phase is divided into small liquid balls, the gas phase is divided into small bubbles, liquid phase back flowing is prohibited, smooth flowing of the gas phase is facilitated, the function of stabilizing the flow rate is achieved, and the vibration and noise reduction effects are achieved.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Waste tire continuous cracking equipment and technology for preventing generation of dioxin and catching carbon black

The invention relates to a waste tire continuous cracking equipment and technology for preventing generation of dioxin and catching carbon black. The equipment comprises a stock bin, a mixed-feeding spiral conveyor, a preheating furnace, a continuous cracking device, a vacuumizing device, an oil-gas treatment device and a carbon black catching device, wherein the stock bin is connected with the mixed-feeding spiral conveyor, the preheating furnace and the continuous cracking device sequentially; the preheating furnace sequentially comprises a heating section, a sealing section, a forward thrust section and a discharging section from the flowing direction of a raw material, a spiral pusher is respectively arranged in the heating section and the forward thrust section, and a spiral pusher is not arranged in the sealing section; the continuous cracking device comprises a first cracking unit at the heating temperature of 340-360DEG C, a second cracking unit at the heating temperature of 440-460DEG C, and a third cracking unit at the heating temperature of 540-560DEG C, which are connected in sequence. According to the equipment and technology, the generation of dioxin in the treatment process of waste tires can be effectively prevented, the carbon black in a waste gas collection tube can be caught, the activity and quality of carbon black can be improved, and the continuous cracking production of waste tires can be realized.
Owner:中机国宏高分子技术研究(北京)中心

Single-layer graphene macromolecular composite epoxy resin adhesive and preparation method thereof

The invention discloses a single-layer graphene macromolecular composite epoxy resin adhesive and a preparation method thereof. The method comprises the following steps: (1) preparing a solvated graphene film; (2) mixing the solvated graphene film with an epoxy resin solution, and then removing the solvent from the mixed solution to obtain the single-layer graphene macromolecular composite epoxy resin adhesive; wherein the graphene film is obtained by suction filtration of a single-layer graphene dispersion, and the single-layer graphene dispersion is obtained by direct thermal reduction or chemical reduction of single-layer graphene oxide. The solvent for the solvation is an organic solvent capable of simultaneously dispersing graphene and epoxy resin, such as dimethyl sulfoxide. The solvation completely avoids re-aggregation of the single-layer graphene, and ensures a single-layer structure. The single-layer graphene molecular composite epoxy resin adhesive can be obtained without using complicated technology. The graphene exists in a single layer rather than agglomerate in the adhesive, so a very small amount (0.01 wt%) of graphene can significantly improve the performance of the epoxy resin adhesive, such as adhesive property.
Owner:TSINGHUA UNIV

Heat supply system pipeline scale removing agent and preparation method thereof

The present invention discloses a heat supply system pipeline scale removing agent, which comprises the following raw materials by weight: 3-7 parts of manganese sulfate, 4-8 parts of an acrylic acid copolymer, 0.5-1.5 parts of sodium stearate, 3-7 parts of a bactericide, 7-9 parts of a rust removing agent, 5-9 parts of a penetrating agent, 5-8 parts of a protein decomposing agent, and 3-6 parts of a scale inhibitor. According to the present invention, the heat supply system pipeline scale removing agent can effectively remove water scale existing in the pipeline for a long time, has advantages of strong scale removing and no secondary damage on the pipeline, can make the pipeline form the scale inhibition function, can delay the secondary formation of scale, can increase the service life of the pipeline, can ensure the smoothness of the pipeline, can effectively remove a variety of bacteria produced during the use process of the heat supply pipeline, and further has excellent comprehensive performance; the preparation method has characteristics of low material cost, easily available raw materials, and simple process; and the obtained product as the heat supply system pipeline scale removing agent has high practical value and good application prospects.
Owner:HEBEI JIASHICHENG ENERGY TECH CO LTD

Preparation process of an aluminum-based graphene composite wear-resistant self-lubricating material

The invention discloses a preparation process of an aluminum-based graphene composite wear-resistant self-lubricating material. The preparation process steps are: S1: using a chemical expansion method to prepare flake graphite into a graphene oxide suspension; S2: adding the graphene oxide suspension to a suspension containing Soluble salt of copper to form a layered composite structure of graphene oxide and Cu2+, adding a strong reducing agent to the aqueous solution to reduce the middle functional groups and Cu2+ of graphene oxide into a mixture of graphene and simple copper; S3: the mixture of step S2 The mixture is static and filtered; dried in a vacuum heating furnace drying chamber, weighed and sealed for packaging; S4: after the aluminum alloy is melted, the composite of graphene and metal copper is forced to be placed in the aluminum alloy melt to heat up to a temperature higher than Melting point 120-150°C, keep warm for 20-50 minutes; S5: Cast the uniformly mixed aluminum and graphene liquid melt into various parts; copper plating on the surface of graphene not only prevents the aggregation of graphene layered structure, but also increases the concentration of graphene and graphene Wettability of aluminum alloys. Copper and aluminum alloys can be melted in any proportion.
Owner:深圳市中科创想科技有限责任公司 +1

Method for preparing lightweight energy-saving building wall material from high-content steel slag

InactiveCN112919877AEliminate negative effectsImprove mechanical excitation effectSolid waste managementCeramicwareFiberSlag
The invention discloses a method for preparing a lightweight energy-saving building wall material by using high-content steel slag, and solves the problems of low utilization rate, low additional value and low consumption of the existing steel slag. The preparation method comprises the following steps: mixing 40-50 parts of steel slag, 10-20 parts of clinker, 0-20 parts of blast furnace slag, 40-50 parts of fly ash and 5 parts of desulfurized gypsum powder; performing mixing, adding 0.02-0.05% of a grinding-aid early strength agent, and performing fine grinding; adding 0-2% of reinforcing fibers into the mixture after fine grinding; mixing with foaming slurry, and adding a water reducing agent; after uniform stirring, pouring the mixture into a mold; curing the test piece for 1 day under the condition of constant humidity of 30 DEG C, performing demolding, performing curing for 3-6 days under the condition of constant humidity of 35-65 DEG C, and performing natural curing for 28 days to prepare the qualified light energy-saving wall material. The solid waste utilization rate can reach 90%, and the steel slag utilization rate can reach 42.5% or above.
Owner:安徽马钢嘉华新型建材有限公司 +1

Preparation method of viscous oil hydrothermal cracking catalysis viscosity reducer having double structures of hydrogen supply and metal catalysis center

The present invention discloses a preparation method of a viscous oil hydrothermal cracking catalysis viscosity reducer having double structures of hydrogen supply and metal catalysis center. The preparation method comprises: heating tetrahydronaphthalene to a temperature of 145-155 DEG C, adding concentrated sulfuric acid in a dropwise manner within 1 h, carrying out sulfonation, heating to a temperature of 155-165 DEG C, reacting for 2-3 h to obtain a tetrahydronaphthalene sulfonation product, adding water to the obtained tetrahydronaphthalene sulfonation product, adding a metal oxide, reacting for 1-1.5 h at a temperature of 105-115 DEG C, filtering, and evaporating to obtain the viscous oil hydrothermal cracking catalysis viscosity reducer having the double structures of hydrogen supply and metal catalysis center, wherein the metal oxide is any one selected from chromium oxide, ferric oxide, and nickel oxide. According to the present invention, the catalysis viscosity reducer has the hydrogen supply function, such that the hydrogen protons can be provided while the catalytic viscosity reducer catalyzes the cracking of the viscous oil macromolecule; and the chromium, iron or nickel metal center provides the catalytic cracking effect so as to effectively reduce the viscosity of the viscous oil and improve the quality of the viscous oil.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

A kind of soft particle creeper containing fructose syrup and its preparation

The invention discloses a soft particle milk replacer containing a high fructose corn syrup, belonging to the technical field of a feed formula design and feed processing. The soft particle milk replacer is prepared by the following steps of: taking a compound fermented soybean meal which is prepared by sequentially mixing bacillus subtilis and a pickle fermentation solution to ferment, and rice as main materials; adding steam fish meal, flour, a peeled soybean meal and the like for match; carrying out ultrafine crushing on the materials and preparing particle materials by using a soft granulator; uniformly spraying a composite syrup prepared from dissolvable components including emulsified fat powder, whey powder, milk powder, white granulated sugar, mycose, soyabean lecithin powder, calcium formate and the like to the surface of the particle materials by using a syrup spraying and dripping device. The nutrition of a product is fully balanced and the nutrition is complete; the soft particle milk replacer is easy to digest and absorb after multiple times of fermentation; the quality is stable; a process of combining a soft granulation system with a syrup spraying and dripping system is adopted so that the occurrence that particles become hard in a storage process of the particle feed is reduced; compared with a dry particle feed, the soft particle milk replacer has the advantages that the loss of the nutrition in a granulation heating and drying process is avoided, and the good palatability of the soft particle feed can also be kept.
Owner:LIAONING WELLHOPE AGRI TECH

Modified grinding-aiding early strength agent for steel slag as well as preparation method and application method of modified grinding-aiding early strength agent

ActiveCN112919832AIncrease profitGood early strength grinding aidAlcoholSlag
The invention discloses a modified grinding-aiding early strength agent for steel slag as well as a preparation method and an application method of the modified grinding-aiding early strength agent, and relates to the field of steel slag grinding aiding. The modified grinding-aid early strength agent comprises (a) 60%-75% of ester compounds based on the total weight of the modified grinding-aid early strength agent; (b) 5%-15% of polyacrylic acid based on the total weight of the modified grinding-aid early strength agent; (c) 10%-35% of alcohol amine and acrylic acid monomers based on the total weight of the modified grinding-aid early strength agent, the preparation method comprises the following steps: adding water into alcohol amine and acrylic acid, uniformly mixing, heating while stirring, reacting at 60-80 DEG C for 3-4 hours, and cooling the solution to room temperature to obtain the modified grinding-aiding early strength agent which is applied to grinding of a gel material with high doping amount of steel slag, so the problems of low grinding efficiency of an existing grinding aid, low activity of the steel slag in the early stage, complex synthesis process, high cost and the like are solved. The preparation process is simple, the raw material cost is low, the finished product quality and performance are stable, the use effect is good, and the 7d strength increase is greater than or equal to 30%.
Owner:安徽马钢嘉华新型建材有限公司 +1

Long-acting boiler scale remover and preparation method for same

The invention discloses a long-acting boiler scale remover and a preparation method for same. The scale remover is composed of, by weight, 15-18 parts of lauryl sodium sulfate, 5-10 parts of sulfamic acid, 6-12 parts of dodecenyl succinic acid, 6-9 parts of lignin, 8-10 parts of sodium gluconate, 4-9 parts of vinyl bis-stearamide, 3-6 parts of aniline, 5-8 parts of polyacrylamide, 10-20 parts of ethylene glycol, 8-12 parts of sodium carbonate, and 200-300 parts of water. The boiler scale remover has the following advantages: 1) the scale remover is green, environment-friendly and pollution free and has no damages on environment and human body during production and usage; 2) the scale remover has excellent scale removal performance, can quickly remove the water scale in the interior of the boiler, and can form a protective layer on an inner wall of the boiler after use, so that accumulation rate of the water scale is reduced and maintenance cost is effectively reduced; and 3) the scale remover has low cost and simple components, is simplified and reasonable in selection on raw materials, has simple and convenient production process, and is suitable for large-scale application.
Owner:牛誉博

Heat exchanger system provided with multiple two-phase flow stabilizing devices and pipeline of heat exchanger system

The invention provides a heat exchanger system provided with a plurality of two-phase flow stabilizing devices and a pipeline of the heat exchanger system. The two-phase flow stabilizing devices are arranged in the pipeline; each of the two-phase flow stabilizing devices comprises a core body; the core body can divide two phase flow runners in the pipeline into a plurality of small runners; and the two-phase flow stabilizing devices are continuously arranged or arranged at intervals. According to the invention, the two-phase flow stabilizing devices are continuously arranged or arranged at intervals, so that the liquid phase and the gaseous phase can be separated through a plurality of stages and steps, heat transfer can be further enhanced, and the effects of vibration and noise reduction are realized.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

A kind of device and method for preparing graphene powder

ActiveCN112607731BImprove responseFully strong current pulse discharge responseGrapheneActivated carbonGraphite
A device for preparing graphene powder, the reaction chamber is connected to the atmosphere generating component; the high-energy discharge component includes a graphene synthesis tube, a first electrode and a second electrode installed at both ends of the graphene synthesis tube, a main controller, an adjustable output power supply and Feed assembly; the graphene synthesis tube, the first electrode and the second electrode are all arranged in a sealed dish, and the first electrode and the second electrode form a ventilation structure with the graphene synthesis tube; the graphene synthesis tube is provided with a carbon source chamber and In the graphene powder chamber, the carbon source chamber is provided with a carbon source addition port; the feeding component is connected to the first control conductive copper column and the second control conductive copper column, and the feeding component is also connected to the adjustable output power supply and the second electrode; the first The electrodes are electrically connected to the main controller, and the main controller is connected to the adjustable output power supply; the second electrode is electrically connected to the adjustable output power supply. The present invention uses lignin as a carbon source, adds a carbon source additive and mixes an activated carbon source, and generates graphene powder under the action of a strong current pulse discharge.
Owner:GUANGDONG UNIV OF TECH

A kind of single-layer graphene macromolecule composite epoxy resin adhesive and preparation method thereof

The invention discloses a single-layer graphene macromolecular composite epoxy resin adhesive and a preparation method thereof. The method comprises the following steps: (1) preparing a solvated graphene film; (2) mixing the solvated graphene film with an epoxy resin solution, and then removing the solvent from the mixed solution to obtain the single-layer graphene macromolecular composite epoxy resin adhesive; wherein the graphene film is obtained by suction filtration of a single-layer graphene dispersion, and the single-layer graphene dispersion is obtained by direct thermal reduction or chemical reduction of single-layer graphene oxide. The solvent for the solvation is an organic solvent capable of simultaneously dispersing graphene and epoxy resin, such as dimethyl sulfoxide. The solvation completely avoids re-aggregation of the single-layer graphene, and ensures a single-layer structure. The single-layer graphene molecular composite epoxy resin adhesive can be obtained without using complicated technology. The graphene exists in a single layer rather than agglomerate in the adhesive, so a very small amount (0.01 wt%) of graphene can significantly improve the performance of the epoxy resin adhesive, such as adhesive property.
Owner:TSINGHUA UNIV
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