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311results about How to "Shorten activation time" patented technology

Carbonization and activation integrated activated carbon production method and equipment

ActiveCN102050445AIncreased activation rateSimple structureCarbon compoundsActivated carbonFlue gas
The invention relates to a carbonization and activation integrated activated carbon production method and carbonization and activation integrated activated carbon production equipment. The production method comprises the following steps of: preparing a raw material, namely dissociating a coal material at a high speed, pre-oxidizing in an oxygen-rich environment to ensure that the coal material has primary adsorption property, adding solid coal pitch in the coal mixing process, pressing a dissociated and pre-oxidized semi-finished product for forming, and crushing and granulating to form a carbonization and activation raw material; performing carbonization and activation integrated production, namely feeding the raw material into a carbonization and activation integrated furnace, preheating the raw material by using high-temperature flue gas returned to a furnace body, transferring the preheated raw material to a furnace tail from a furnace head with the rotation of the furnace body, and activating the raw material by using mixed gas sprayed from throat tubes of the furnace head and the furnace tail; and cooling the activated raw material by using a cooling system and discharging out of the furnace body. The activation rate is high, yield is high, cost is low, and autothermal equilibrium and product upgrading are realized; meanwhile, environmental pollution is reduced.
Owner:CHNA ENERGY INVESTMENT CORP LTD +2

Method for preparing paste soldering flux

The invention provides a method for preparing a paste soldering flux. The soldering flux comprises the following raw materials: resin, a solvent, an amine activating agent, a thixotropic agent, an organic acid activating agent and a corrosion inhibitor. The preparation method comprises the following steps of: a) stirring the resin and the solvent, heating until the resin is dissolved completely, cooling, adding the amine activating agent, and stirring until the amine activating agent is dissolved completely; b) adding the thixotropic agent, and emulsifying and dispersing by using emulsification equipment at constant temperature, so that the thixotropic agent forms a thixotropic gel network structure; c) adding the organic acid activating agent, reacting with the amine activating agent to form a salt compound, and adding the corrosion inhibitor and stirring to dissolve the salt compound; and d) stirring and cooling slowly to room temperature to obtain the paste soldering flux. The prepared paste soldering flux is mainly applied to soldering paste formed by stirring and mixing the paste soldering flux and superfine solder powder under vacuum, and has high heat collapse resistance, and high viscosity stability in the processes of storage and printing to avoid the 'post-thickening' phenomenon.
Owner:厦门市及时雨焊料有限公司

Method for preparing porous carbon material by using magnesium oxide template in cooperation with activation of potassium hydroxide

The invention discloses a method for preparing a porous carbon material by using a magnesium oxide template in cooperation with the activation of potassium hydroxide, and belongs to the technical field of carbon materials and microwave chemistry. The method comprises the following steps of: grinding coal tar pitch serving as a carbon source, nano magnesium oxide serving as a template and the potassium hydroxide serving as an activating agent; transferring the mixture to a corundum crucible; and putting into a microwave reactor, performing one-step microwave heating activation, and thus obtaining the porous carbon material for an electrochemical capacitor, wherein the specific surface area of the obtained porous carbon material is between 439 and 1,394m<2> / g, the total pore volume is between 0.23 and 0.94cm<3>, the average pore size is between 1.95 and 3.36mm, the ratio of the volume of a non-micro pore to the total pore volume is between 26.1 and 86.2 percent, and the porous carbon yield is between 37.8 and 84.9 percent. The invention has the advantages that: the method is quick and energy-saving; and the prepared porous carbon is used as an electrode material of the electrochemical capacitor and has extremely high stability and high comprehensive performance.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Device and method for preparing activated carbon material for electrochemical capacitor

InactiveCN102205962AFacilitate the activation of pore formationAvoid temperature gradientsElectrolytic capacitorsPotassium hydroxideBiological activation
The invention provides a device and method for preparing an activated carbon material for an electrochemical capacitor, belonging to the technical fields of coal chemical industry and microwave chemistry. The method comprises the following preparation processes of: deashing coal particles serving as raw materials by using hydrochloric acid and hydrofluoric acid, modifying the deashed coal by using nitric acid in an auxiliary way, mixing the modified coal serving as a carbon source with potassium hydroxide and deionized water, stirring to obtain a mixture, stirring and evaporating the mixture to obtain a solid mixture, and then performing microwave-assisted activating, washing, drying and grinding on the solid mixture to obtain the activated carbon. The invention has the advantages that the activation time is only 20-30 minutes, the mass ratio of potassium hydroxide to coal is (0.5-3):1, the preparation process is simple, the microwave-assisted heating is uniform, efficient and energy-saving, the consumption of the potassium hydroxide is reduced, and the activation process has the advantages of uniformity and high efficiency. The prepared activated carbon is used as an electrode material of the electrochemical capacitor and has better stability and excellent comprehensive property.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Carbon preparation material based on coke modification and sulphur-applying activated char, and production process thereof

InactiveCN101428795AHigh activation reactivityReduced corrosion resistance requirementsSulfurRoom temperature
The invention relates to carbon preparation material and sulfuric active carbon based on the modification of coke and a preparation method thereof. The invention adopts the scheme that the preparation method comprises the following steps: dipping the coke in KOG solution for 1 to 24 hours at the temperature of 20 to 100 DEG C, wherein the mass ratio of KOH and the coke is 0.05 to 0.5:1; carrying out heat treatment to the coke after being dipped for 1 to 5 hours under the condition of inert atmosphere and 300 to 700 DEG C; then cooling the coke to the room temperature; and finally preparing the carbon preparation material after the coke is washed and dried. The carbon preparation material prepared can react for 1 to 5 hours under the conditions that the mass ratio of active gas flow rate and the carbon preparation material is 5 to 30:1 L/min/kg and the temperature is 350 to 850 DEG C, so as to prepare the sulfuric active carbon. The invention has the advantages of saved alkali consumption and energy consumption, shortened activating treatment time, high yield, and reduced corrosion resistant requirements of the material; the prepared carbon preparation material has high reaction activation; and the sulfuric active carbon prepared by the carbon preparation material has larger specific surface area and high sulphur content, and exits in a straight chain sulfuric shape as the subject of S2 and S6.
Owner:WUHAN UNIV OF SCI & TECH

Activation method of proton exchange membrane fuel cell

The invention provides an activation method of a proton exchange membrane fuel cell. The activation method of the proton exchange membrane fuel cell comprises the following steps: alternately applyingback pressure to the anode side and the cathode side of the proton exchange membrane fuel cell to form a pressure difference between the anode side and the cathode side so as to complete the activation process of the proton exchange membrane fuel cell. The activation method has high activation efficiency, less hydrogen consumption and high safety and can be used in proton exchange membrane fuel cells with different power levels. The pressure difference is formed on the two sides of the membrane electrode by repeatedly and alternately applying a suitable back pressure on the anode side and thecathode side of the proton exchange membrane fuel cell to improve the wetting of the membrane electrode, and the water generated by the reaction is utilized to quickly open up the water and gas transmission channel of the catalytic layer under the action of the pressure difference to remove impurities in the flow field and promote the formation of a gas, liquid and solid three-phase reaction interface so as to efficiently and stably improve the performance of the fuel cell and achieve the purpose of activating the cell.
Owner:FAW JIEFANG AUTOMOTIVE CO

Wireless network access method and device

The invention relates to a wireless network access method which comprises the following steps of: detecting whether a wireless network can be communicated or not; selecting a wireless network access mode according to a detection result; and establishing a connection according to the selected wireless network access mode. The invention also relates to a wireless network access device which comprises a detection module, a selection module and a connection establishing module, wherein the detection module is used for detecting whether the network is communicated or not; the selection module is used for automatically selecting the wireless access mode according to the detection result of the detection module; and the connection establishing module is used for establishing the connection according to the network access mode selected by the selection module. In the invention, the network is only activated as occasion requires, therefore, the network activation duration is greatly shortened; the waiting time of a user is shortened, and the network abnormity can be fed back in time; a usable access mode can be automatically detected and selected so that the self-adaption to various network abnormity switching situations is achieved, the access point concept is weakened, and the interference to the user can be reduced; and the velocity measurement on the network can be realized, and the user can select the optimal access mode under the help of the invention.
Owner:TENCENT TECH (BEIJING) CO LTD

Preparation method of wide-temperature range rare earth-based composite oxide denitration catalyst

The invention discloses a preparation method of a wide-temperature range rare earth-based composite oxide denitration catalyst. The preparation method comprises that titanium dioxide and montmorillonite as carriers, ammonium metatungstate, ammonium metavanadate, cerium nitrate and manganese oxide as active components and accessory materials are subjected to blending, ageing decaying, kneading, molding, drying and roasting to form the wide-temperature range rare earth-based composite oxide denitration catalyst, wherein the accessory materials comprise monoethanolamine, citric acid, ammonia water, lactic acid, stearic acid, glass fibers, wood pulp, hydroxypropyl methyl cellulose, polyoxyethylene, citric acid and water. The preparation method utilizes the rare earth-based composite oxide as an active ingredient, shortens catalyst activation time, effectively controls a SO2/SO3 conversion rate, improves a catalyst temperature adaptation capability, widens a catalyst use temperature range from 320-400 DEG C to 150-420 DEG C, has denitration efficiency more than 90%, and can carry out ammonia spraying denitration operation at a denitration area temperature of 150 DEG C when a boiler is started.
Owner:山东信义汽车配件制造有限公司
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