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

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.

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.

The invention relates to the technical field of food processing methods, in particular to an anti-hardening white square rice cake and a production method for the anti-hardening white square rice cake. The anti-hardening white square rice cake is produced by taking glutinous rice flour, anti-hardening syrup, lard oil, modified maize starch and black sesame and the like as raw materials, and according to a certain formula, performing the following steps of: (1) checking materials; (2) making the glutinous rice flour; (3) frying the black sesame; (4) mixing; (5) beating; (6) stewing; (7) re-steaming; (8) cooling, re-moisturizing and slicing; and (9) packaging and the like. The anti-hardening white square rice cake not only keeps the characteristics that the conventional white square rice cake is moist, soft, frozen grease-like, sweet and delicious and the like; and compared with the conventional white square rice cake, the a quality problem of short-term hardening is avoided and a softness guarantee period is prolonged by 40-45 days.

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.

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.

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.

The invention relates to the field of processing technologies of edible syrups, and particularly relates to an edible anti-hardening syrup and a preparation method thereof, wherein the edible anti-hardening syrup is formed from the following raw materials in parts by weight: 80-120 parts of white granulated sugar, 30-50 parts of trehalose, 40-60 parts of malt syrup and 0.10-0.40 part of sucrose fatty acid ester. The preparation method comprises the steps of: (1) examining raw materials; (2) screening; (3) weighing; (4) boiling; and (5) packing to the obtain the finished product. Compared with the prior art, the edible anti-hardening syrup has the advantages that through reasonably collocating the materials with better water holding capacity, softness holding property and emulsification property, the prepared edible anti-hardening syrup is capable of replacing the components such as water, sucrose and the like in the traditional processing; and by using the edible anti-hardening syrup, the quality problem of short-time hardening of the prepared dry rice cake type foods can be solved.

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.

The invention provides a preparation method of monodispersed nano-calcium carbonate with low surface energy and relates to the technical fields of preparation and processing of nano-calcium carbonatepowder. The preparation method comprises the following steps: S1, preparing boiled nano-calcium carbonate pulp; S2, adding an aging agent into the boiled nano-calcium carbonate pulp prepared in S1, and carrying out aging treatment to obtain a nano-calcium carbonate aging suspension; and S3, adding a surface treating agent into the nano-calcium carbonate aging suspension prepared in S2 to carry outsurface treatment, and then, carrying out filtration pressing dehydrating, drying and smashing to obtain the monodispersed nano-calcium carbonate with low surface energy. According to the preparationmethod, due to the addition of the aging agent, secondary aggregate depolymerization is realized, meanwhile, the specific surface energy of a powder is greatly reduced, and a monodispersed nano-calcium carbonate product is achieved.

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.

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.

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%.

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.

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.

The invention provides a preparation method of an attapulgite/C2N one-dimensional/two-dimensional composite. A two-dimensional C2N thin layer is supported on the surface of one-dimensional attapulgitethrough an in-situ chemical reaction, secondary aggregation of the C2N thin layer is effectively inhibited, the specific surface area of the thin layer is increased while active sites are effectivelyexposed, and the novel attapulgite/C2N one-dimensional/two-dimensional composite with excellent optical and electrical performance is obtained.