1953 results about "Charring" patented technology

Systems and methods for controlling the power supplied to an electrosurgical probe. The systems and methods may be used to monitor electrode-tissue contact, adjust power in response to a loss of contact, and apply power in such a manner that charring, coagulum formation and tissue popping are less likely to occur.

The invention discloses aqueous fire-proof corrosion-proof paint for a steel structure and a preparation method thereof, and belongs to the technical field of paint. The aqueous fire-proof corrosion-proof paint comprises, by mass, 20-45% of a composite emulsion, 12-25% of a charring catalyst, 6-12% of a foaming agent, 8-17% of a charring agent, 5-10% of a fire retardant, 1-5% of layered double hydroxide, 8-18% of an corrosion-proof filling material, 4-12% of a strengthening filling material, 1-5% of modified nano-powder, 0.5-6% of an assistant and 10-30% of water. Through use of the composite modified emulsion as a base material, coating flame resistance, corrosion resistance and decorativeness are obtained and coating defects caused by a single emulsion as a base material are overcome. Through use of a small amount of the nano-powder, the coating is compact because of filling effects of the nano-powder, the coating corrosion caused by O2, H2O and Cl <-> is avoided, good fire-proof and corrosion-proof effects are obtained under the condition of a small addition amount and a cost is reduced. The aqueous fire-proof corrosion-proof paint has the characteristics of green environmental protection and simple preparation processes.

The invention discloses a method for preparing magnetic biological carbon adsorbing material and the usage thereof. The method comprises the steps: 1) drying and crushing waste biomass, and sieving by20-100 meshes; 2) putting the sieved biomass into 0.1-0.5mol/L of iron salt solution with the weight percent of the biomass being 1-10% of the total quantity; under stirring, dripping 3-6mol/L of NaOH solution until the pH value of the solution is 9-10; 3) filtering, drying and compacting the solid precipitate, and then limiting oxygen carbonizing for 1-5h at the temperature of 100-700 DEG C, thus obtaining the magnetic biological carbon adsorbing material; 4) putting the magnetic biological carbon adsorbing material into waste water, and simultaneously removing organic pollutant and phosphate radical in the waste water. The method realizes synchronization of preparation of the adsorbing material and the process of magnetization, and is simple in preparation process, rich in the source ofthe biomass material and low in cost; furthermore, the prepared magnetic adsorbent is covered by biological carbon or embedded with magnetic nano Fe3O4 granules, has special structure and stable existence, can effectively remove the organic pollutant and phosphate in the waste water, and is easy for magnetic separation.

The invention discloses a continuous biomass low-temperature pyrolytic charring method and a charring furnace thereof, belonging to the fields of biomass charring and biomass energy source utilization. The furnace body of the charring furnace adopts a screw propelling feed mode, and the power is derived from the drive of a motor; an external heating cylinder is sheathed outside an internal heating cylinder of the furnace body, the internal cylinder and the external cylinder are spaced, and the internal flue inside the sleeve has a labyrinth path to ensure heat supply from hot flue gas to pyrolytic reaction to uniformly heat a biomass raw material; and during charring, the generated flue gas supplies heat to a reaction cylinder after combustion in a combustion chamber, and the hot flue gas enters a heat exchanger device to dry the raw material after flowing through the sleeve. Through screw propelling, the method disclosed by the invention realizes continuous low-temperature pyrolytic charring reaction, and realizes accuracy control of the retention time of the biomass inside the charring furnace; and the furnace body adopts a sleeve structure, which fully utilizes the afterheat of the charring flue gas, and the reaction cylinder adopts interior heating and outer wall heating together, which enhances the uniformity characteristic of the temperature inside the reaction cylinder and prolongs the service life of an auger shaft.

An electrosurgical generator may reduce unintended tissue damage by improving regulation of output power. The electrosurgical generator may control the power during a cycle, and react to a change in power if arcing occurs. Voltage sources, especially, demonstrate the tendency to have large, uncontrolled power excursions during normal electrosurgical use. The magnitude of the power excursions may be dependent on various factors. An exemplary electrosurgical generator control scheme reduces or minimizes the thermal spread by accurately supplying the specified power within a few cycles. Additionally, fast and accurate regulation provided by the constant voltage mode reduces or minimizes unintentional tissue charring. Thus, reduced thermal spread and charring should result in better surgical outcomes by reducing scarring and decreasing healing times. An electrosurgical generator controller may be configured to control both a DC-DC buck converter and a DC-AC boost inverter based in part on electrical parameters of the electrosurgical generator.

The compositely circulating high temperature gasifying process for making synthetic gas with biomass includes the steps of low temperature charring, powdering, high temperature gasifying, separating carbon containing clinker, purifying synthetic gas, and circulating utilization of synthetic gas. Biomass material is first pyrolyzed into pyrolyzed gas and charcoal and the pyrolyzed gas is burnt incompletely in the high temperature gasifying furnace to produce gasifying agent and heat; the charcoal is powdered and fed to the reducing area in the high temperature gasifying furnace to produce reduction reaction with the gasifying agent; and the fly ash and residual carbon produced in the purification are returned to the burning area in the high temperature gasifying furnace. The present invention can produce synthetic gas with CO and H2 content up to 72 %, and has gasifying efficiency of 80-84 % and carbon converting rate over 99 %.

The invention discloses a composite fire-proof material with high refractoriness under load for coke ovens. The preparation method of the material comprises the following steps of: evenly mixing and crushing 40%-60% of Al2O3, 15%-30% of SiC micro powder, less than 2% of Fe2O3, 5%-10% of Si micro powder and 1%-3% of cement as an additive; adding 3%-5% of Al(H2PO4)3 as an adhesive and stirring and mixing evenly; and pouring the mixture to a working region in 20-30 minutes. The furnace-building process comprises the following steps of: cleaning a kiln, measuring, molding, positioning and supporting a mould, adding materials, pouring and correcting, cleaning, starting for warming up and testing. The coke ovens newly built by pouring is characterized in that the top of the chamber of the furnace is fan-shaped, the chamber of the furnace is built by on-site seamless overall vibration pouring according to the process above with the furnace-building materials above, afterheat of the furnace can be recycled for power generation and no chemical residues exist. The furnace is short in charring time and higher in coke recovery and can be started and used at any time between the normal temperature and 1550 DEG C.

The invention relates to a preparation method and use of a carbon molecular sieve. The preparation method comprises the following steps: preparing a conventional carbon molecular sieve; and expanding the pores in the conventional carbon molecular sieve by using a secondary activation technique and modifying the conventional carbon molecular sieve by adjusting the pores. The new carbon molecular sieve is prepared by using coal, coconut shell or phenolic resin, and the like as raw materials, by the conventional production steps of crushing, forming, carbonizing, steam activating, hydrocarbon settling and shrinking and the like and by secondary activation with KOH or CO2 as an activator. The activation temperature is between 550 and 850 DEG C; and the ignition loss rate of the product is kept be between 0.1 and 30 percent. In aspect of use, the carbon molecular sieve can be used for absorbing nitrogen molecules and can also be used for absorbing and separating methane and nitrogen in seam gas under a variable pressure while achieving an adsorption dynamic separation effect and allowing high-concentration methane gas to be collected at the exit of an adsorption tower directly; and thus, the methane in the seam gas can be used efficiently.

A fire retardant thermoplastic polyester comprising a phosphorus containing additive and a high charring polymer containing benzene rings in its main polymer backbone and that has a softening point of no less than about 120° C. exhibits improved fire resistance and no plate out of fire retardant additive during aging.

The invention discloses a sludge biological carbonizing technology based on hydrothermal reaction. The sludge biological carbonizing technology comprises the steps as follows: 1) dewatering the sludge, and transferring the sludge into a sludge pre-storage bin to be stored; 2) preheating the dewatered sludge; 3) transferring the preheated dewatered sludge into a hydrothermal reactor, thus obtaining hydrothermal lysis solution; 4) returning the hydrothermal lysis solution into a preheating system to preheat the dewatered sludge, and cooling the hydrothermal lysis solution so as to obtain a gaseous product; 5) transferring the cooled hydrothermal lysis solution into a filter press for filter pressing, thus obtaining a reacting filtrate and a solid product; 6) drying the solid product produced in previous step, and then transferring the solid product into a dry type carbonizing furnace to be carbonized, so as to obtain the solid biological carbon and other products, and transferring the other products into a gas-liquid separating device to be separated so as to obtain combustible gas and tar; and 7) transferring the gaseous product obtained in step 4) and the combustible gas and tar obtained in step 6) into a firebox to be burnt so as to generate heat; and supplying the generated heat to a hydrothermal reactor and the dry type carbonizing furnace. With the adoption of the sludge biological carbonizing technology disclosed by the invention, the product with high additional value can be obtained; and meanwhile, the energy can be saved.

The invention relates to saline-alkali soil paddy rice special-purpose carbon-based organic fertilizer. The saline-alkali soil paddy rice special-purpose carbon-based organic fertilizer has a low cost and high fertilizer efficiency, is economic and environmentally friendly, improves a soil water binding capacity and permeability, and has functions of keeping fertility, slowly releasing fertilizer and reducing paddy rice salinization. The saline-alkali soil paddy rice special-purpose carbon-based organic fertilizer comprises biomass charcoal, chicken manure, pyroligneous liquor, fermented soybean meal and potassium humate. The biomass charcoal is prepared by thermal cracking charring of biomass raw materials under anoxic conditions. The saline-alkali soil paddy rice special-purpose carbon-based organic fertilizer can be used for paddy rice plantation, can improve a saline-alkali soil environment and can improve an organic paddy rice yield.

The invention discloses a method for preparation of biochar from banana peel. The method comprises the steps of: (1) crushing banana peel, then mixing the crushed banana peel with an aqueous solution of an activator, and performing standing; then carrying out washing and drying to obtain a biochar precursor, wherein the activator is at least one of alkali metal hydroxide, lewis acid and peroxide; (2) mixing the biochar precursor with an acid solution, then carrying out hydrothermal charring reaction at 180DEG C-260DEG C, and at the end of the hydrothermal charring reaction, carrying out washing and drying to obtain the biochar. In addition, the invention also comprises the biochar prepared by the method and application of the biochar to adsorption of heavy metals. The method provided by the invention utilizes agricultural production waste to prepare a biochar adsorbent by simple and rapid hydrothermal charring method, turns waste into treasure, makes full use of resources, reduces environmental pollution, has good economic benefits, develops new technology, and is beneficial to industrial production.

A simple charring furnace for corn cob particles and its charring process are disclosed. Said charring process features that the corn cob particles are dry-distilled and decomposed at 260-450 deg.C in anoxic condition and the quantity of supplied O2 is controlled by the thickness of raw material. The charred particles can be used as the matrix of slow-release compound fertilizer.

The invention relates to a triazine series oligomer and the compound method. The method has the following steps: adding solvent into cyanuric chloride, dropping alkylol amine and acid roping agent to gain substitute of cyanuric chloride; heating, dropping diamidogen and acid roping agent to gain the substitute of cyanuric chloride; adding diamidogen and acid roping agent into reaction solution, heating, pumping, washing, and drying to gain triazine series oligomer. The invention has strong charring and expanding ability, and good thermal stability. It has advantages of continuously reaction process, short reaction time, simple compounding technology, little organic solvent, and easy to recycle organic solvent.

The invention relates technology of surface treatment of wooden wares, comprising the following steps: drying the wood and blanking according to the requirement, processing and charring; brushing or spraying the archaized color priming paint which is compounded by diluent and mixture of yellow paint, red paint, black paint, and white paint in proper proportion, after drying, repairing the surface of the wood, then spraying the priming paint repeatedly twice or thrice, making it dry naturally; sanding the said wooden wares by fineness abrasive cloth, taking out the paint around 20%; spraying the press polish archaized paint to the surface of the wooden wares. The invention processes simple technology, good effect of imitation antique, convenience production, economy and utility.

Methods are provided for treating prostate glands or other targeted soft tissue using a solid-state laser. The laser can be operated to generate a pulsed output beam having pulse durations of between 0.1 and 500 milliseconds. The output beam is delivered to the targeted tissue through an optical fiber, preferably terminating in a side-firing probe or diffusing tip. By operating the laser in a long-duration pulse mode, charring of the targeted tissue is initiated quickly, thereby increasing ablation rates and reducing overall procedure time.

The invention relates to a wood microwave vacuum drying and charring device and a drying and charring method thereof. The device comprises one charring tank (box) with a tank door (3), a tank door opener (2) and a charring chamber (1), a vacuum system, and one or more microwave sources (6) generating the microwave, a heat-conducting oil furnace system and a material preparation and feed system. The drying and charring method comprises the following steps: A. rising the temperature inside the tank to 30-50 DEG C, and then to 80-130 DEG C at the rate of 2-8 DEG C/h; B. preserving the temperature for 2-100 hours; C. vacuumizing the tank for 4-100 hours; D. starting a hot recycle pump to control the oil furnace temperature, the oil flow rate and the pressure inside the tank for 4-100 hours: E. turning off the microwave source and a heat source, opening an intake and exhaust valve (39) to discharge the pressure inside the tank to 0 and lower the temperature to 70-130 DEG C, and then closing the intake and exhaust valve (39); and F. starting a vacuum pump (22) to lower the temperature inside of the tank by air circulation and removing the wood from the tank when the temperature decreases to 30-70 DEG C. The device and the method help char the wood evenly, shorten the production cycle by 60% compared with the conventional method, and lower the energy consumption by 70%, thus greatly reducing the production cost.

The invention discloses a biological black carbon treating agent for absorbing and curing cadmium and lead in a water body polluted by heavy metals and a preparation method thereof. The preparation method comprises the following steps of: (1) collecting, namely collecting agricultural organic wastes; (2) air-drying, namely air-drying the agricultural organic wastes; (3) carbonizing, namely carbonizing the agricultural organic wastes at the temperature of 300-500 DEG C to obtain biological black carbon; (4) smashing, namely grinding and screening the biological black carbon; (5) modifying, namely adding the screened biological black carbon into a 12wt% sodium alginate solution and uniformly stirring; (6) granulating, namely dropping the biological black carbon-sodium alginate solution obtained in the step (5) into a 2wt% CaCl2 solution, curing and cleaning the mixture by using deionized water, thus obtaining biological black carbon granules; and (7) putting the biological black carbon granules obtained in the step (6) into a drying oven to dry the biological black carbon granules at the temperature of 40-60 DEG C until the biological black carbon granules are constant in weight. The biological black carbon treating agent can effectively absorb and remove the heavy metals, namely cadmium and lead, from the polluted water body, and simultaneously can fully use the agricultural organic waste resources.

An efficient hyperbranched polyphosphazene flame retardant charring agent is prepared by reacting hexachlorocyclotriphosphazene with a binary compound containing two active groups. The charring agent has characteristics of good foaming charring performance, excellent flame retardant effects and good processing performance, and can be widely used in plastics, rubber, coating, adhesives, and other polymer materials. A preparing method adopts a one-pot method, and has characteristics of continuous reaction process, short reaction time and high production efficiency. By controlling the mole ratio of the hexachlorocyclotriphosphazene to the binary compound, no end-capping agent is added in the reaction process. When compared with the addition of end-capping agents in synthesis processes in triazine type charring agent patents, the synthetic process of the charring agent is simplified.

The invention discloses a making method of wastewater active charcoal through waste tyre in the processing method technical domain of environmental protective solid waste, which is characterized by the following: transmitting entire or broken waste tyre into pyrogenic stove; transmitting carbon waste in the charring activating furnace; sending non-condensed gas into combusting furnace; inducing high-hot CO2 and H2O flow into charring activating furnace to heat charring activating furnace; adopting incomplete combusting carbon black as new additional raw material; insulating the charring activating furnace from air; reducing to below 100 deg.c to obtain the product; alternating two stoves.

The invention discloses continuous rotary biomass pyrolytic charring and boiler heat supply integrated equipment. The equipment comprises raw material conveying equipment, a rotary drying furnace and a rotary charring furnace, and is characterized in that: the raw material conveying equipment is connected with the rotary drying furnace and connected with the rotary charring furnace through a star-like feeder; a material which is pyrolytically charred by the rotary charring furnace is discharged through a charred material outlet; the rotary charring furnace comprises a hearth and a rotary furnace; one path of high-temperature hot gas produced by combustion of an oxygen-containing combustion chamber is conveyed into the hearth of the rotary charring furnace through a flue to enter a charring section; the rotary furnace comprises a barrel, an inner heating tube and a baffle ring; one end head of the inner heating tube is fixed on the barrel wall on one side and passes through the baffle ring to be fixed on the barrel wall on the other side of the baffle ring; after the high-temperature hot gas passes through the hearth through the flue, certain high-temperature hot gas enters one end head of the inner heating tube, is discharged out of the other end head of the inner heating tube, enters a waste heat conveying pipe and is conveyed into the rotary drying furnace through an induced draught fan; and the high-temperature hot gas is conveyed into a biomass boiler through another flue. The equipment can improve the working efficiency of the rotary charring furnace.

A char making apparatus comprises a longitudinal pyrolyzer furnace housing wherein coal-bearing material may be heated to a temperature to fluidize volatile materials therein and plasticize coal in the coal-bearing material. At least two rotatable drive screws are laterally positioned and interleaved within the longitudinal furnace housing and capable of conveying coal-bearing materials through the pyrolyzer furnace housing, each drive screw having a hollow drive shaft and a diverter positioned within the drive shaft to provide heating to the coal-bearing material. A heating jacket about the longitudinal furnace housing provides additional heating to the coal-bearing material. Multiple combustion chambers adjacent the heating jacket and hollow drive shaft burn fluidized volatile materials and exhaust combustion fluids through the jacket and shaft.

A thermodecomposing-charring method for treating city garbage includes such steps as thermodecomposing while charring, removing acidic gas from the thermodecomposed gas, burning the gas, and transferring the heat from the high-temp gas generated by burning to the garbage in the thermodecomposing furnace. Its apparatus is also disclosed.