51results about How to "Uniform activation" patented technology

The invention relates to a method for synthesizing ultrafine calcium carbonate by utilizing carbide slag. The method comprises the following steps of: (1) dissolving carbide slag: uniformly mixing carbide slag with water in a ratio of (1:6)-(1:20) to ensure that the carbide slag is fully dissolved into a turbid liquid, wherein the water content of the carbide slag is 20-45%; (2) carrying out impregnation reaction: adding ammonium chloride into the turbid liquid of the carbide slag for uniformly mixing, wherein the mass ratio of carbide slag to ammonium chloride is (1:0.7)-(1:2.5), after the impregnation reaction is finished, filtering and removing the slag to obtain a clear calcium chloride solution; and (3) carrying out carbonization reaction: adding a crystal form control agent into a calcium chloride solution for fully dissolving, introducing CO2 into the solution to carry out carbonization reaction till the pH (potential of Hydrogen) value of the reaction solution is less than or equal to 7 to obtain ultrafine calcium carbonate slurry, wherein the crystal form control agent is one or more than two mixtures of sulfate, chloride, citrate, sodium dodecyl benzene sulfonate, pyrophosphate, oleic acid, ammonium citrate, N-methyl pyrrolidone and maleic acid.

A gettering unit encompasses a silicon substrate, a thin film heater disposed on the silicon substrate, and a gettering layer disposed selectively on the thin film heater. Here, the thin film heater is made of metallic film such as platinum (Pt) or chromium (Cr) film. The area of the gettering layer is smaller than the area for the thin film heater so as to expose first and second end terminals of the thin film heater. The first and second end terminals of the thin film heater serves as the bonding pads in the assembling process.

Ceramic products possessing antisepsis and water mineralization and activation functions, and its preparation method and uses, wherein the ceramic product is prepared from the following ingredients (by weight ratio): montmorillonite 25-60 parts, diatomite 10-30 parts, aluminum oxide 5-20 parts, silicon oxide 3-15 parts, calcium carbonate 15-45 parts, multifunctional health ceramic material 5-20 parts, adhesive 9-15 parts through proportioning, disintegrating, mixing, blank making and sintering.

A preparation method of a layered porous active carbon electrode material for a supercapacitor relates to the technical field of a supercapacitor electrode material. The layered porous active carbon electrode material for the supercapacitor is obtained by the steps of mixing casing after being carbonized with KOH and deionized water under an ultrasonic condition, performing drying to obtain a mixture, activating the mixture in a nitrogen atmosphere and finally performing grinding. The casing is rich in source, can be reproduced and is environmental-friendly, the active carbon material preparedby a simple processing technology has a layered structure, developed specific area and reasonable aperture distribution and has relatively good capacitance performance in the supercapacitor when usedas the electrode material. The preparation process is simple and easy to operate and has important significance to reduction of the production cost of high-surface active carbon for the supercapacitor.

The invention discloses tobacco matrix activated carbon and a preparation method thereof. The tobacco matrix activated carbon is obtained by mixing anhydrous K2CO3, tobacco waste powder and low-density polyethylene powder and performing high-temperature carbonization in a protective gas environment. The methylene blue adsorption capacity of the activated carbon is as high as 806 mg/g and is far higher than the standard methylene blue adsorption capacity of first-grade products. Low-density polyethylene plastic is added, so activation process is more sufficient, activation effect is uniform, and the prepared activated carbon has a more developed pore structure. Potassium carbonate is used as an activating agent, generated K<+> can break a carbon chain to form a complex salt, and the catalytic process of repeated ring opening, cracking and ring opening enriches the microstructure of the activated carbon. CO2 is also a good physical activating agent, so the pore volume and the pore-forming efficiency of the activated carbon can be increased.

The invention discloses a method for producing desulfurization and denitrification hollow activated carbon. The method comprises the following steps: (1) grinding, namely grinding soft coal, coking coal, coke powder and asphalt in a weight ratio of (30-40):(20-30):(15-25):(10-15) in a grinding machine till 70% of the raw materials with granularity of 325 meshes can pass; (2) mixing, namely mixingthe grinded carbon powder, coal tar and water in a weight ratio of 80:(10-15):(10-15) at 35-50 DEG C; and (3) pelletizing, namely pelletizing the mixed material in a pelletizing machine, wherein the diameter of the pelletized material is 9.0-10.0mm, and the inner diameter of the pelletized material is 2-3mm. The method disclosed by the invention is reasonable in design, and compared with conventional desulfurization and denitrification activated carbon, the desulfurization and denitrification hollow activated carbon produced by using the method has the advantages of being activated both insideand outside, light in piling weight, large in adsorption contact area, and the like, and has very good market application values.

The invention relates to a production process of activated carbon. The production process of activated carbon comprises the following steps: 1, feeding a dried carbonized material to a furnace body through a furnace end feeder of a rotary activating oven, setting the temperature in the furnace body at 800-1000 DEG C, and arranging thermocouple temperature sensing devices and air blowers in front three sections of the furnace body; 2, introducing water steam to the furnace body to be reacted with the carbonized material, controlling the reaction time within 3-10 hours, and recovering tail gases generated by reaction through a tail gas recovery device arranged at the tail of the furnace, and then, mainly introducing the mixed gases in form of CO and H2 to the boiler which generates the water steam for combustion of the boiler; and 3, feeding the activated carbon obtained by reaction from a discharge port at the tail of the furnace to a discharge cooler to be cooled, and smashing, verifying, packaging and putting in storage. According to the production process of activated carbon provided by the invention, the yield is high, the product quality is good, the labor intensity is low, the production efficiency is high, and the process is energy-saving and environmentally-friendly.

When it is determined that control of warm-up of a catalyst is necessary at the time of start of an engine, an ECU starts warm-up control. Initially, the ECU performs first processing for a first set time period. In the first processing, the ECU sets the engine to an idle state and fully opens a waste gate valve. When the first set time period has elapsed since the first processing was started, the ECU performs second processing. In the second processing, the ECU sets the engine to a prescribed rotation speed and fully closes the waste gate valve. When a second set time period has elapsed since the second processing was started, the ECU quits the second processing and quits warm-up control.

The invention discloses a continuous production process for enabling gold metal to be firmly attached to aromatic special fiber filaments, belongs to the technical field of metallization of special fibers, and relates to a method for continuously and uninterruptedly producing gold-plated aromatic special fibers such as aramid fibers, PBO fibers and polyimide fibers for 24 hours. Firstly, the problems that high-strength fiber metallization cannot leave a laboratory, and stable long fibers with consistent parameters cannot be produced, for example, more than thousands of meters of long fibers cannot be produced at a time are solved; and meanwhile, due to the controllability of the production speed and various electroplating parameters, the technical problems that the fibers are the same in length, different in required conductivity and different in plating layer thickness are solved, and different specifications can be customized according to the special requirements of space flight and aviation.

The invention belongs to the technical field of porous carbon materials, and particularly relates to a preparation method of a nitrogen-doped porous carbon material and application of the nitrogen-doped porous carbon material in a supercapacitor. The nitrogen-doped porous carbon material is prepared by taking weathered coal humic acid as a carbon material precursor, urea as a nitrogen source and a potassium metal compound as an active agent through high-temperature reaction, and when the nitrogen-doped porous carbon material is applied to an electrode material of a supercapacitor, the supercapacitor shows excellent electrochemical performance. The initial raw materials are humic acid and urea which widely exist in nature and are low in price and rich in source, and the method only relates to a small number of procedures such as activation and cleaning, so that large-scale industrial production is easy to realize.

The invention relates to de-electronic magnetization combined activation apparatus for brackish water. The apparatus comprises a de-electronic activation device arranged on an insulating plate, the de-electronic activation device is made of a metal material, and the de-electronic activation device is of a tubular shape with two ends open; the apparatus also comprises a tubular magnetization activation device with two ends open, one end of the magnetization activation device is in insulated connection with one end of the de-electronic activation device, the magnetization activation device communicates with the de-electronic activation device, and one end, connected with the magnetization activation device, of the de-electronic activation device is provided with a grounding device; and the inner cavity of the magnetization activation device is provided with a first magnet group, a second magnet group, a third magnet group and a fourth magnet group in the axial direction. The activation apparatus for the brackish water provided by the invention can effectively improve the physicochemical properties of the brackish water.

The invention relates to activated carbon having a hollow form, and a preparation method of activated carbon, belonging to the technical fields of coal chemical industry and environmental protection. The activated carbon having the hollow form mainly solves the problems that the existing columnar activated carbon is more in invalid holes, high in systemic resistance, not uniform in air flow distribution inside a bed layer, and the like. The activated carbon having the hollow form is mainly characterized in that the activated carbon is in a cylindrical regular granule shape provided with axial cylinder-shaped through holes; the activated carbon is prepared from the materials of 55-75% of anthracite, 28-40% of coal tar, 1-5% of a diluent and 1-10% of water; the preparation method of the activated carbon comprises the steps of grinding, preparing tar, preparing coal paste, firstly pressing into the columnar hollow form, then drying, carbonizing, activating, and the like. The activated carbon provided by the invention has the characteristics of being high in micropore structure ratio, low in bed layer resistance and uniform in air flow distribution; the preparation method is mainly used for preparing the columnar activated carbon.

The invention discloses a production process for preparing activated carbon from sludge. The production process comprises the following steps: 1, preparation of raw materials: mixing municipal sludge,a carburant and a surface strength additive, drying and dehydrating the mixed materials, then carrying out granulating, and sending a granulated material into a pyrolysis carbonization device for processing; 2, pyrolysis carbonization: adopting an internally-heating rotary kiln or an internally-heating tunnel kiln type pyrolysis carbonization furnace, and carrying out pyrolysis carbonization at atemperature of 500-700 DEG C for 30-45 min; and 3, activation: adopting a physical activation mode, and carrying out activation at 750-900 DEG C for 2-3 h with carbon dioxide and water vapor as activation media. According to the invention, biological sludge is used as a main raw material to prepare the biological sludge-based activated carbon, so the three purposes of reduction, harmless treatment and recycling of the sludge can be realized; and the biological sludge-based activated carbon can be used as a novel environment-friendly material for environmental protection treatment, so the problem of sludge treatment in China at present is effectively solved.

The invention provides a method for preparing super capacitor active carbon by utilizing acid sludge pitch. The method comprises the following steps that acid sludge pitch is smashed to obtain acid sludge pitch powder; the acid sludge pitch powder is placed in a basic solution to be mixed, the mixture is subjected to dispersion, homogenizing and emulsifying, and emulsion of the acid sludge pitch and the basic solution is obtained; the emulsion is placed into an activating oven to be dried and dehydrated, and then carbonized and activated at the high temperature and under protection of nitrogen; the activated product is washed till to be neutral, and then subjected to vacuum rotation drying, and the super capacitor active carbon is obtained. The acid sludge pitch being taken as the raw material is cheap and easy to get, and can be reused, and thus the pollution of the acid sludge pitch to the environment can be reduced. The acid sludge pitch has the rich acidic functional groups, and has the good polarity, the acid sludge pitch particles can be in contact with the basic solution in the nano size in the homogeneous emulsion, the mass transferring resistance is overcome, and thus theactivation process can be operated evenly.

The invention provides a device and method for controlling the growth state of carbon nano tubes based on decoupling heat treatment and application thereof, and belongs to the technical field of carbon nano tube preparation. By designing a multi-zone rapid thermal CVD reactor, the catalyst formation temperature (T1), the carbon source decomposition temperature (T2) and the carbon nano tube nucleation and growth temperature (T3) are completely decoupled. Based on the decoupling technology, each of the three temperatures (T1, T2 and T3) possibly influencing the growth of a carbon nano tube can be independently researched, so that the decoupling technology has a good practical application value.