35 results about "Carbonization" patented technology

The method for preparing active carbon from bamboo raw material includes the following steps: (1). mao bamboo and waste produced by making bamboo wares are used as raw material, through cutting and screening, and screening bamboo scraps or screening bamboo scraps and making them form; (2). low temp. pyrogenic distillation carbonization of bamboo raw material in carbonization furnace, its pyrogenic distrillation carbonization temp. is 200-600 deg.C; (3). in the presence of micro oxygen placing the carbonized bamboo raw material into activating furnace and making activation by using superheatedsteam at high-temp., activating temp. is 400-850 deg.c; and (4) breaking or water washing activated active carbon, drying, sorting and sieving to obtain the invented product. Before carbonization thebamboo raw material can be soaked in mixed solution formed from zinc chloride and hydrogen peroxide or mixed solution formed from phosphoric acid and hydrogen peroxide. Its product not only possessesthe advantages of all the wooden active carbons, but also its methylthionine chloride decolouring power can be raised by 20%.

An integrated circuit structure includes a semiconductor substrate; a dielectric layer over the semiconductor substrate; a conductive wiring in the dielectric layer; and a metal carbide cap layer over the conductive wiring.

The invention relates to a system for urban sludge flue gas drying middle-temperature pyrolysis carboization. The system comprises a hot air device and a feed storage metering device, a low-temperature flue gas drying device, a bag-type dust remover, a middle-temperature pyrolysis carboization device, a flue gas waste heat recovery device and a tail gas purification and deodorization device which are connected in sequence, and the hot air device supplies hot air to the low-temperature flue gas drying device and the middle-temperature pyrolysis carboization device. According to the system for urban sludge flue gas drying middle-temperature pyrolysis carboization, by means of optimal combination of the system and energy gradient utilization, the energy consumption of the system is reduced, and the thermal efficiency is effectively improved; by means of middle-temperature pyrolysis, the problem that coking and blocking are caused by local overheating of the sludge is solved, and the reliability of the system is improved. The system adopts a low-temperature flue gas drying technology and serves as front section sludge drying core equipment, the atomizing drying efficiency is high, and the time is short; a principle of combining the drying section with a spouted bed and a fluidized bed can effectively control the particle size of dried discharging materials to be 2-4 mm, and the subsequent carbonization efficiency is effectively improved.

The invention discloses a carbonization cleaning process of a carbonizer for producing heavy soda ash, particularly aiming at a carbonization cleaning process of an outside cool tower for producing heavy soda ash, characterized by: using marshalling operation, using one tower for cleaning, using the other three towers for producing soda, and washing the towers with an ammonia mother liquor II by turns; sending the ammonia mother liquor II in a cleaning tower, letting a mixed gas of carbon dioxide and nitrogen in the cleaning tower, dissolving sodium bicarbonate and ammonium bicarbonate and other scabs in the tower with the ammonia mother liquor II, and simultaneously reacting ammonia in the ammonia mother liquor II with carbon dioxide to achieve the purposes of carbon dioxide absorption and then precarbonization. According to the invention, because of no need of letting the hot ammonia mother liquor II be subject to cooling and then enter in the soda production tower, the carbonization conversion degree is effectively raised, and the carbonization cleaning process disclosed herein is beneficial for cleaning the carbonizer.

The invention provides a preparation method of polyacrylonitrile-based hollow carbon fibers. Lignin and polyacrylonitrile are dissolved in a solvent for defoaming at 25-80 DEG C, the obtained spinningsolution is sprayed into coagulation bath through a circular spinneret plate, hot-drawing is performed in pure water, hollow primary fibers are obtained, and the polyacrylonitrile-based hollow carbonfibers are obtained after water washing, drying, pre-oxidation and carbonization. The method has the advantages of having good separation and adsorption effect for medium and large molecules, good solvent resistance and long service life.

The invention relates to a preparation method of rice hull carbon based solid sulfoacid. The preparation method of the rice hull carbon based solid sulfoacid which can be applied to various acid catalyzed reactions. The preparation method of the rice hull carbon based solid sulfoacid includes the following steps: mixing rice hulls with concentrated sulfuric acid, heating and stirring the mixture, conducting partial carbonization, obtaining solid materials, filtering, water washing and alcohol washing, and obtaining the carbon based solid sulfoacid. The sulfoacid preparation method of the rice hull carbon based solid is simple in operation, short in reaction time, high in density of obtained carbon based solid sulfoacid and capable of bring convenience for industrial implementation and the like, and providing a novel method.

The invention provides graphene-based hierarchical pore capacitor carbon and a preparation method thereof. The preparation method comprises the following steps: water-soluble sugar and a graphenes substance are subjected to a hydro-thermal reaction, a cross-linking agent is added during a reaction process, an activator is added after the reaction is complete, and then the materials are subjected to a carbonization reaction to obtain the product. The cross-linking agent is a nitrogenous foaming agent, and the activator is selected from one or more of potassium hydroxide, sodium hydroxide, zinc chloride and phosphoric acid. According to the invention, stacking and agglomeration of the graphene can be inhibited with a larger degree, the specific surface area and amount of porosity are increased, and the specific surface area utilization rate and specific capacitance are increased.

The invention discloses a straw carbonization furnace with high thermal conversion efficiency. The straw carbonization furnace comprises a furnace body, a large furnace door and a small furnace door, wherein the large furnace door and the small furnace door are arranged at one side of the furnace body; the large furnace door is connected with the furnace body through a large furnace door sealing compression bar and a large furnace door hinge; the small furnace door is connected with the large furnace door through a small furnace door sealing compression bar and a small furnace door hinge; the furnace body is internally provided with a combustion chamber; the furnace body surrounding the combustion chamber is provided with a water interlayer; the upper end of the water interlayer is provided with an exhaust port and a water inlet; the upper end of the combustion chamber is provided with a smoke outlet pipe; the lower end of the furnace body is provided with a hot water outlet pipe and a hot water pump which are connected with the water interlayer; the combustion chamber is internally provided with a temperature detecting probe; the furnace body is provided with a control device connected with the temperature detecting probe.

The invention relates to a preparation method of a large-sized and high-heat-conductivity natural graphite radiating film. The preparation method includes the steps: taking natural flake graphite as araw material and preparing highly oxidized graphite extremely easy to clean by an improved oxidized graphite preparation method; dispersing the oxidized graphite in a solvent to prepare slurry; coating a substrate with the slurry; drying an obtained wet film, and demolding and winding the film; performing carbonization or hydroiodic acid reduction treatment; performing graphitization treatment and calendaring to obtain the high-heat-conductivity natural graphite radiating film. By the method, the low-cost natural graphite film which is 3-20 micrometers in thickness, 50-200 millimeters in width and more than 2 meters in length can be prepared quite simply, the in-plane heat conductivity of the prepared graphite film can reach 1460Wm<-1>K<-1>, and the electrical conductivity of the preparedgraphite film can reach 5700Scm<-1>.

The invention relates to pre-oxidation equipment of a PAN (polyacrylonitrile) precursor end. The pre-oxidation equipment comprises a hot air circulating oven and a tow tension frame, wherein the interior of the hot air circulating ovenis divided into a pre-oxidation cavity, an air return cavity and an air inlet cavity; air flow channels which are communicated are formed by the pre-oxidation cavity, the air return cavity and the air inlet cavity, a fan and a heater are arranged in the air inlet cavity, an entrance is arranged on the side surface of the hot air circulatingoven, an air-tight dooris arranged at the entrance, and the tow tension frame extending into the hot air circulating oven from the entrance is located in the pre-oxidation cavity; a tension adjuster for clamping tows is arranged on the tow tension frame, the tows penetrate through the tow tension frame, and free ends of the tows are fixed on the tow tension frame. The invention further relates to an end connection method. High-quality end pre-oxidation can be realized by the pre-oxidation equipment, and a foundation is laid for follow-up high-quality air connection of two tows; with adoption of the end connection method, the tows can smoothly pass pre-oxidation and carbonization processes, and continuous production of large-tow carbon fibers is realized.

The invention relates to the technical field of positioning, and discloses a positioning method and device of a coke furnace locomotive. The method comprises the following steps: calculating the difference between the stroke of the coke furnace locomotive and a fixed coordinate value of a carbonization chamber; judging whether the difference is within the precision threshold range; if not, judging whether the difference is greater than 0; if so, reversing the coke furnace locomotive until the difference is within the precision threshold range; and if not, advancing the coke furnace locomotive until the difference is within the precision threshold range. The difference between the stroke of the coke furnace locomotive and the fixed coordinate value of the carbonization chamber is calculated and utilized to control the coke furnace locomotive so as to finally position the coke furnace locomotive near the central line of the same carbonization chamber, thereby implementing the precise positioning of the coke furnace locomotive and ensuring the safe production of the coke furnace.

The invention provides a method for preparing large-particle baking soda by a secondary carbonization method and the obtained baking soda. The method comprises the following steps of: 1) taking a sodium carbonate solution, and performing purifying; 2) enabling the solution to enter the upper part of a pre-carbonization tower, and carrying out pre-carbonization reaction with carbon dioxide gas; 3)discharging the pre-carbonized solution from the bottom of the pre-carbonization tower, and performing cooling; 4) feeding the solution obtained in step 3) into the middle part and the upper part of the carbonization tower in a multi-strand manner, feeding carbon dioxide into the middle part and the lower part of the carbonization tower in a multi-strand manner, and carrying out carbonization reaction to generate baking soda crystal mush; 5) compressing the carbon dioxide tail gas exhausted from the top of the carbonization tower, and enabling the compressed carbon dioxide tail gas to enter the lower part of the pre-carbonization tower; and 6) discharging the baking soda crystal mush from the bottom of the carbonization tower, and performing separating and drying to obtain baking soda. Large-particle baking soda is obtained through pre-carbonization, cooling and carbonization in the carbonization tower in a multi-strand feeding and multi-strand air inflow mode, and the yield of the baking soda is increased; the pre-carbonization tower absorbs the tail gas of the carbonization tower, so that the utilization rate of carbon dioxide is increased, and the economic benefit is good.

The invention discloses a manufacturing method of a bamboo spring bracket. The manufacturing method of the bamboo spring bracket comprises the following steps of bamboo chip pretreatment, gluing and assembly, molding and demolding. The manufacturing method of the bamboo spring bracket has the advantages that traditional metal and rubber spring materials are replaced, and natural bamboo wood is selected, thereby being capable of improving the environmental protection performance and natural degradability of the product; the bamboo wood is treated by using a high temperature poaching, bleaching,drying and carbonization method to obtain the better water-proof bamboo wood; and a bamboo spring material with better mechanical and elastic properties and shock absorption and noise reduction functions is generated by adopting bamboo chips with different thicknesses and steel tubes with different diameters and using a mode of stacking and gluing of multi-layer bamboo chips. The manufacturing method of the bamboo spring bracket can be applied to automobile cushions or middle plate beds.

The invention discloses an Ni film annealing patterned graphene preparation method based on 3C-SiC/chlorine gas reaction, which mainly solves the problem that the graphene prepared by the prior art can cause damage and result in electron mobility reduction when being used for photoetching technology as a transistor channeling material. The preparation method comprises the following steps: (1) growing a carbonization layer on an Si substrate as a transition layer; (2) growing a 3C-SiC film on the carbonization layer; (3) depositing SiO2 on the surface of the 3C-SiC film, and etching a pattern on the SiO2; (4) reacting the patterned sample wafer with Cl2 to generate a carbon film; (5) removing the SiO2 except the pattern; (6) depositing an Ni film on the carbon film by using an electron beam; and (7) putting the sample wafer with the deposited Ni film in Ar gas, and annealing for 15-30 minutes so that the carbon film reconstitutes the patterned graphene in the pattern position. The invention has the advantages of simple technique and high safety; the graphene can be directly used as a conducting channel without photoetching when making a transistor on the graphene; and the graphene can be used for making graphene transistors with superhigh mobility.

The invention provides a preparation method of zeolite-activated carbon composite adsorbent, comprising the following steps: (1) mixing coal gangue powder, asphalt, and white carbon black, drying, and then, in a tube furnace, under the protection of inert gas, Carbonization, and then carbon dioxide gas is introduced to activate to obtain the activated sample; (2) Add the activated sample to the sodium hydroxide solution, react, stand at room temperature for hydrothermal crystallization, then ultrasonically disperse, filter, and filter the residue Washing and drying to obtain the zeolite-activated carbon composite material; (3) Add the obtained zeolite-activated carbon composite material to the glucose solution, stir, filter, dry the obtained filter residue, and then put it into a tube furnace under the protection of an inert gas , carbonized to obtain the zeolite-activated carbon composite adsorbent. The zeolite-activated carbon composite adsorbent prepared by the invention has large BET specific surface area and micropore specific surface area, and has large adsorption capacity for CH4 and N2.

The invention discloses a method for preparing a micro-mesoporous carbon anode material from an amino acid modified metallic organic framework and application. The method comprises steps of synthesizing the amino acid modified metallic organic framework, pretreating the metallic organic framework material, carrying out a carbonization reaction, and the like, the synthesized metallic organic framework is washed and dried, and high-temperature carbonization treatment is carried out directly, and then a nitrogen doped porous carbon material of a rich micro-mesoporous structure is prepared. Compared with a pure metallic organic framework-based carbon material, the carbon electrode material prepared by using the method has a large specific surface area, a large aperture distribution range and alarge pore volume, and has high activity for electro-catalysis oxygen reduction reactions. Meanwhile, the preparation method is simple and easy to control, gentle in condition, easy in raw material obtaining and good in application prospect.

The invention discloses a porous carbon material prepared by using self-modification of pseudomonas putida and a preparation method and application thereof. Self accumulation PHA of the pseudomonas putida (Pseudomonas putida KT2440, preservation serial number of ATCC No.47054) is regulated and controlled by changing ingredients of a culture medium, and carbonization is carried out by directly adopting thallus collected by centrifugation to prepare the graded porous carbon material without any excitation steps. The germ self-modification derived porous carbon material has a large number of mesopore structures. The porous carbon material is used as an electrode material of a super capacitor, when electric current density is 0.5 A/g, the specific volume of the porous carbon material reaches 298 F/g; and when the electric current density increases by 20 A/g, the specific volume of the porous carbon material maintains by 234 F/g, and good electric capacity and excellent rate performance aredisplayed. The preparation method has the advantages of novelty, simple operation, low manufacturing cost and the like, the prepared material has the characteristics of graded bore diameter, large specific surface area, good electrical conductivity and excellent electrochemical performance, and is an electrode material for the ideal super capacitor or batteries.

The invention relates to a preparation method of medicinal active carbon. The dried bagasse is used as raw materials, and is crushed; then, the materials are added into a potassium carbonate solution to be soaked; the weight ratio of the bagasse to the potassium carbonate solution is 1:(4 to 7); the soaked bagasse is subjected to centrifugation dewatering; then, air isolation is performed for carbonization treatment; carbides are obtained; the carbides are subjected to acid washing by hydrochloric acid, and are then washed by water to a neutral state; finally, drying and sieving are performed. The medicinal active carbon has the advantages that the decoloring speed is high; the adsorption capability is high; the medical property of the medicine per se is not influenced. The bagasse is used as the raw materials; the resource waste and the environment pollution are avoided; the ecological environment protection is facilitated; in addition, the bagasse per se is a safe and nontoxic reproducible substance material; the product added value is high; good social and economic benefits can be generated.

The invention discloses a preparation method of active carbon. The method comprises the following steps: (1), material crushing; (2), material forming; (3), material carbonizing; (4), material cooling; (5), carbon block breaking; (6), carbon block activating; (7), acid pickling; (8), washing; and (9), drying. The method capable of converting roots, stems and leaves of plants into active carbon provides a novel approach for treating agricultural and forest residues through a green and environmentally friendly mode, and active carbon products with economic benefit can be further obtained. The content of fixed active carbon in roots and stems of plants in the prior art is generally low, blocky materials, with the structural strength being even superior to that of timber, are obtained while the material accumulation space is greatly reduced through forming squeezing on roots, stems and leaves of plants, further carbon components in raw materials are kept in a concentrated manner, and the method provides a powerful technical support for improving the carbon acquisition ratio during further carbonization.

The invention discloses a production method of a vanadium-nitrogen alloy, which comprises the following steps of: uniformly stirring and mixing a powdery vanadium-containing compound, a carbon reducing agent, a binder and a fluoride mineralizer; and performing compression moulding to obtain a regular mixture blank, wherein 138-146 parts of vanadium-containing compound, 43-49 parts of carbon reducing agent, 13-20 parts of binder and 1-5 parts of fluoride mineralizer by weight are mixed; putting the obtained mixture blank into a heat-resistant stainless steel container under the protection of nitrogen atmosphere and performing carbonization reaction pretreatment to obtain a pretreated product; putting the pretreated product into a resistance sintering furnace under the protection of argon or nitrogen atmosphere and performing further carbonization reaction treatment to obtain a treated product; putting the treated product into a nitriding furnace in nitrogen atmosphere and performing nitriding reaction treatment; and cooling and discharging to obtain a product of vanadium-nitrogen alloy. The method disclosed by the invention has a simple structure and short reaction time, and realizes high apparent density, stable quality and high nitrogen content of the product.

The invention discloses a novel electrode material of a supercapacitor, wherein the novel electrode material of the supercapacitor is carbon carbide material/graphene oxide/chitosan. Polypyrrole composite is a kind of carbon/graphene oxide/chitosan composite under protective atmosphere. Polypyrrole composites are prepared by sintering and carbonization, and the carbonization temperature is 800 DEGC-900 DEG C. The supercapacitor of the invention comprises a supercapacitor, a connecting ring is slidably connected on the side wall of the supercapacitor, and the connecting ring can directly mountthe supercapacitors connected together on a circuit board for welding, the welding is more convenient, and the connecting ring can rotate. A long chain of that chitosan and the polypyrrole molecule are uniformly disper and loaded on graphene oxide and carbon material to form a three-dimensional open pore structure, which is favorable for the charged particles to diffuse to the electrode interface, has good cycle performance, wide work range, fast charging and the like, and has the advantages of larger specific surface area and more active sites.