72results about How to "Shorten carbonization time" patented technology

The invention discloses a method for preparing a carbide film by carbonizing graphene reinforced polyimide resin, and relates to a method for preparing a carbide film. The method solves the technical problems of high carbonizing temperature, high energy consumption, long carbonizing period and low carbonizing rate and low strength of the carbide film in the conventional method for preparing the carbide film. The method comprises the following steps of: 1, adding 4,4'-diamino diphenyl ether (ODA) and 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) into N,N-dimethyl acetamide (DMAC), and performing mechanical stirring to obtain a polyamide acid (PAA) solution; 2, adding graphene into the PAA solution, and performing in-situ polymerization reaction to obtain a solution A; 3, spreading the solution A on a clean glass plate, heating to the temperature of 60 DEG C and preserving the heat for 2 hours, heating to the temperature of 100 DEG C and preserving the heat for 1 hour, heating to the temperature of 200 DEG C and preserving the heat for 1 hour, heating to the temperature of 300 DEG C and preserving the heat for 1 hour, and thus obtaining a composite film; and 4, carbonizing, naturally cooling to room temperature, and thus obtaining the carbide film. The carbide film has excellent mechanical properties; and because the adding proportion of the graphene is increased, the mechanical properties of the carbide film are improved, the specific capacitance of the graphene is also improved, and the carbide film is suitable to be used as an electrode material.

The invention discloses a method for continuously preparing vanadium-nitrogen alloy. The method includes the first step of preparation, the second step of blending and blank manufacturing, the third step of adding, the fourth step of preheating and prereduction, the fifth step of carbonization and nitridation sintering, and the sixth step of discharging. A device for preparing vanadium-nitrogen alloy according to the method comprises a vertical boiler, a top feeding bin (1) and a continuous automatic discharging device (2), wherein the vertical boiler is composed of a preheating section (4), a calcination section (4) and a cooling section (5); the lower end of the vertical boiler is connected with the continuous automatic discharging device (2) through a pipeline; the tail end of the continuous automatic discharging device is connected with a finished product trolley (20) through a discharge pipe (18); the bottom of the vertical boiler is provided with a nitrogen inlet (21). The method has the advantages that the process and the device are compact, the production process is short, electric energy is saved, little investment is required, yield is high, continuous production is really achieved, and the industrialized and scale production requirement is met.

The invention discloses a modified bio-carbon preparation method thereof. The preparation method takes bagasse as a raw material, bagasse is subjected to resource utilization, the bagasse is used forpreparing the modified bio-carbon with characteristics of small particle size, large specific surface area, and prominent micropore structure, more nutrition ions such as iron, nitrogen, phosphor, potassium and silicon are absorbed in micropore, the nutrition ions in the micropore can be displaced to cadmium and arsenic ions, and the cadmium and arsenic content in soil can be reduced. The modifiedbio-carbon has the advantages of simple component and low cost, contains nutrient elements required by plant, contains components for solidifying cadmium and arsenic, can reduces absorption of cadmium and arsenic by the plant, and increases the plant output.

This invention relates to the heater and electrode structure of diamond film growth device. This invention mainly includes a fixing electrode, a mobile electrode and corresponding heater, the character as follows: the fixing electrode is arranged with a group of electrode poles in equal space; and the mobile electrode is also arranged with a group of electrode poles, and the space is equal to the electrode pole space of the fixing electrode, the electrode pole is half space away from the electrode pole on the fixing electrode; the heater is a flat-shape heater, which is wrapped around the electrode pole of the fixing electrode and mobile electrode to form heater array. Comparing to the circular silk, the flat-shape structure increases the contact area and time of the reaction gas and heater, and improves the reaction gas decomposing rate, and save electric energy to decrease the growth cost of the diamond film.

The invention discloses a method for improving durability of a concrete product by using a carbonized coating, which comprises the following steps: uniformly mixing 80-100 parts of a carbonized active cementing material, 0-20 parts of an auxiliary calcium source, 0.1-2.0 parts of a carbonized layer reinforcing agent, 1-6 parts of a water reducing agent and 25-45 parts of water to obtain a carbonized coating; and coating the carbonized coating on the surface of a product matrix, and standing and carbonizing to obtain the concrete product coated with the carbonized coating. By introducing the auxiliary calcium source, the carbonization time can be shortened, the utilization rate and the production efficiency of the carbonization device can be improved, and the requirements of a product production process are met; and by applying the carbonized coating prepared from the carbonized active cementing material such as the steel slag to the surface of the concrete product, the purpose of economically, conveniently and effectively improving the durability of the concrete product through the calcium carbonate coating is achieved, meanwhile, the application range of the carbonized active cementing material is widened, a large amount of carbon dioxide can be immobilized, and the method has obvious environmental benefits.

The present invention relates to an indirect-heating-type carbonization treatment system for waste, which disposes of organic industrial, livestock, and medical wastes generated by the industrial, livestock farming, and medical fields by collecting and effectively carbonizing the wastes, and to a carbonization treatment vehicle using same. According to the present invention, the waste generated by the industrial, livestock farming, and medical fields is carbonized at a location close to the location at which the waste is generated or is continuously disposed of while the vehicle is moving, in order to enable the complete carbonization of the waste and the effective protection of the surrounding environment.

The invention provides a method for open type carbonization strengthening of waste concrete recycled aggregate, which comprises the following steps: crushing waste concrete to obtain granular recycledaggregate, soaking the granular recycled aggregate in water, continuously introducing industrial waste gas containing carbon dioxide, in the soaking process, performing a carbonization reaction on carbon dioxide contained in the industrial waste gas and mortar attached to the surface of the granular recycled aggregate. A carbon dioxide sealing carbonization device is not needed, continuous production is easy, and carbon dioxide industrial waste gas with different concentrations can be utilized.

The invention discloses a high-temperature hearth carbonizing furnace which comprises a furnace body casing. A carbonizing chamber is arranged in a hearth, a feeding device is further connected to the furnace body casing, the feeding device is connected with a carbonizing pipe through a feeding pipe, a combusting pipe is annularly arranged on the outer side of the carbonizing pipe, a cavity between the combusting pipe and the carbonizing pipe is divided into a combusting pipe and a pyrolysis gas distributing chamber, pyrolysis gas inlets are formed in a pyrolysis gas distributing plate, a pyrolysis gas access pipe access to the pyrolysis gas distributing chamber is arranged on the carbonizing pipe, an air pipe is annularly arranged on the outer side of the combusting chamber, and air inlets for combustion air to enter the combusting pipe are formed in the combusting pipe. The high-temperature hearth carbonizing furnace uses pyrolysis gas generated in a carbonizing process to continuously heat the carbonizing pipe, so that byproducts generated in the carbonizing process are fully utilized, waste of energy gas generated in the carbonizing process is avoided, carbonizing innocent treatment on sludge is further achieved, pollution of the sludge to the environment is avoided, energy consumption of the carbonizing furnace is reduced, and energy is saved.

A carbon fiber bundle forming method, wherein the at least one carbon fiber bundle can be evenly heated since it is heated with microwave in the first and second microwave steps. Besides, the at least one carbon fiber bundle is treated in the laser step, laser can reach into the interior of the at least one carbon fiber bundle to enable the carbonization and graphitization to take place more evenly, then the carbon fiber bundle is treated in the subsequent roughening treatment step, the resin forming step and the semi-cure forming step, so that the interior of the at least one carbon fiber bundle can be heated evenly, which allows the at least one carbon fiber bundle to be carbonized evenly.

A method for preparing hydrocarbon-rich bio-oil and biochar through microwave-assisted double bed co-catalytic rapid pyrolysis of soybean soap stock comprises the following steps: 1, uniformly mixinga bentonite catalyst with the soybean soap stock according to a mass ratio of 1:1 to 1:5; 2, taking an HZSM-5 molecular sieve catalyst according to a mass ratio of the HZSM-5 molecular sieve to the soybean soap stock of 1:2 to 1:5, adding the HZSM-5 molecular sieve into a U-shaped quartz tube connected with the pyrolysis steam outlet of a double-mouth quartz bottle, and adding a microwave absorbent into a quartz cup; and 3, embedding the double-mouth quartz bottle and the U-shaped quartz tube in the quartz cup filled with the microwave absorbent, placing the obtained quartz cup in a microwavepyrolysis instrument, heating the instrument to 450-650 DEG C, rapidly adding the above obtained bentonite catalyst and soybean soap stock mixture, and allowing pyrolysis steam to go through a suctionpump and go through the U-shaped quartz tube for catalytic reforming by the catalyst, condensing the obtained steam by a condenser tube to obtain hydrocarbon-rich bio-oil and a solid which is biochar. The method greatly shortens the carbonization time, improves the yield and the quality of the bio-oil, and significantly improves the content of alkanes and aromatic hydrocarbons in the hydrocarbon-rich bio-oil and the heavy metal adsorption performance of the biochar.

The invention relates to the technical field of production of calcium carbonate and in particular discloses a method and a device for producing the calcium carbonate through a dynamical carbonation method. The method comprises the following steps: suspending and limiting a dynamic reactor provided with a reaction cavity and a downward opening in a reaction tank; adding prepared Ca(OH)2 slurry intothe reaction tank and immersing the opening of the dynamic reactor; pumping the Ca(OH)2 slurry in the reaction tank through a reflowing pump and spraying and reflowing in a reaction cavity of the dynamic reactor; meanwhile, introducing CO2-containing mixed gas into the reaction cavity; monitoring the pH (Potential of Hydrogen) value of reaction slurry in the reaction tank; when the pH value is 7to 8, stopping the reflowing of the slurry to prepare a calcium carbonate crude product. According to the method and the device for producing the calcium carbonate through the dynamical carbonation method, provided by the invention, the carbonation speed is improved by 60 percent and the carbonation time is shortened by 37.5 percent; the grain diameter of the generated calcium carbonate is 2 to 4microns and the utilization rate of the carbon dioxide is improved to 69 percent from original 50 percent.

The invention relates to a device and method for strengthening recycled aggregate by means of CO2. The device comprises a reaction kettle with a kettle cover, a plurality of layers of stacked material frames are arranged in the reaction kettle, a gas inlet connected with a carbon dioxide steel cylinder is formed in the side of the reaction kettle, a pressurizing opening is formed in the kettle cover and connected with the carbon dioxide steel cylinder through a booster pump, and the kettle cover is further provided with an exhaust port and a vacuum opening connected with a vacuum pump. The device is simple in structure, convenient to install and maintain, convenient to clean and high in universality. By means of reaction of CO2 and recycled aggregate, the recycled aggregate is strengthened, basic properties of the recycled aggregate are improved, the water absorption rate and porosity of the recycled aggregate are reduced, the aperture is reduced, carbonization time is shortened, carbonization depth is increased, the treatment effect is improved, the yield is increased, and the equipment utilization rate is increased.

The invention provides plate-shaped tungsten carbide-cobalt alloy and a preparation method thereof. The method comprises the following steps: enabling a raw material mixture to be subjected to sintering treatment so as to obtain the plate-shaped tungsten carbide-cobalt alloy, wherein the raw material mixture contains superfine WC-Co powder, and in the raw material mixture, the grain sizes of at least 90% or more of the superfine WC-Co powder are not greater than 800 nm. The method is simple and convenient to operate, easy to realize, relatively low in cost and easy to industrialize, and the prepared plate-shaped tungsten carbide-cobalt alloy has relatively uniform particle sizes and excellent mechanical properties.

The invention discloses a technology method for co-producing nano calcium carbonate from melamine tail gas. The technology method for co-producing the nano calcium carbonate from the melamine tail gascontains the following steps: (1) introducing melamine tail gas into an inorganic acid for neutralization after the melamine tail gas is subjected to filtering and washing, and compressing collectedgas to obtain carbon dioxide; (2) adding a crystal form control agent into calcium hydroxide suspension liquid, and then introducing the carbon dioxide for a carbonation reaction to generate nano calcium carbonate slurry; (3) at 60-90 DEG C, adding modifying liquid into the nano calcium carbonate slurry in the step (2), and conducting stirring and mixing to obtain modified nano calcium carbonate slurry, wherein the adding amount of a dry basis of the modifying liquid is 2-10% of the mass of the nano calcium carbonate; and (4) conducting filtering, drying and crushing on the modified nano calcium carbonate slurry to obtain the nano calcium carbonate. According to the technology method for co-producing the nano calcium carbonate from the melamine tail gas, the generated nano calcium carbonate is in a shape of a chain, the average primary particle diameter is 40-80 nm, the nano calcium carbonate shows hydrophobicity, an activation grade reaches 99% or above, and the dispersion performancewhen the generated nano calcium carbonate is compatible with a polymer organic matrix is good, so that the application performance of the mechanical performance, the optical performance, the thixotropic performance and the like are significantly improved.

The invention relates to an extraction solution for preparing active light calcium carbonate, application and a preparation method of the active light calcium carbonate. The extraction solution is selected from any one of a first extraction solution and a second extraction solution; the first extraction solution comprises an organic extraction solvent, organic amine and carboxylic acid, the organic extraction solvent is difficult to dissolve in water and can dissolve the organic amine, the organic amine is difficult to dissolve in water and easy to dissolve in the organic extraction solvent, and organic amine carboxylate formed by organic amine and carboxylic acid is easy to dissolve in the organic extraction solvent, calcium carboxylate obtained by reacting carboxylic acid with calcium hydroxide is easy to dissolve in water and difficult to dissolve in the organic extraction solvent; the second extraction solution comprises an organic extraction solvent, organic amine and carboxylic acid, the organic amine is difficult to dissolve in water and easy to dissolve in the organic extraction solvent, and calcium carboxylate obtained by reacting carboxylic acid with calcium hydroxide iseasy to dissolve in the organic extraction solvent and difficult to dissolve in water. According to the extraction solution disclosed by the invention, CaCO3 synthesis and surface treatment are combined into one, so that superfine CaCO3, particularly nano CaCO3, can be easily obtained.

The invention relates to suaeda glauca ultrafine powder briquetting active carbon and a preparation method thereof. According to the method, suaeda glauca ultrafine powder is firstly crushed into drypowder; then, ZnCl2 and FeCl3 composite activation solution is used for activation; next, heating carbonization is performed; after the carbonization, acidification washing, drying and ultrafine crushing are performed to obtain the suaeda glauca ultrafine powder active carbon; shaping agents, auxiliary materials and additives are added into the suaeda glauca ultrafine powder active carbon; mixingand water adding pasting are performed; briquetting and shaping are performed to obtain the suaeda glauca ultrafine powder briquetting active carbon. The suaeda glauca ultrafine powder briquetting active carbon and the preparation method thereof have the advantages that the cost is low; the preparation efficiency is high; the product adsorption performance is good.