1111results about How to "Increase burn rate" patented technology

The invention discloses a method for coating micro/nano-metal powder by chemical vapor deposition, including: decomposing difluorocarbene precursor gas via a cracking pipe to generate difluorocarbene free radicals; contacting the generated difluorocarbene free radicals with micro/nano-metal powder, and due to polymerization between difluorocarbene free radicals, a compact polytetrafluoroethylene coating film is generated on the surface of micro/nano-metal powder. In allusion to disadvantages and defects of the application of micro/nano-metal powder in energy-containing materials, polytetrafluoroethylene is polymerized on the surface of metal powder by chemical vapor deposition in order to coat micro/nano-metal powder. In the invention, the ignition temperature of metal powder is effectively decreased, the ignition delay time is shortened, and the combustion speed of metal powder is improved; the surface of metal powder coated with polytetrafluoroethylene is highly hydrophobic, so that reactive metal powder can be effectively prevented from absorption of moisture and oxidation.

A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot).

The invention relates to an efficient burning furnace with a rotary fluidization grate. The burning furnace with the rotary fluidization grate consists of a feeding system, a burning system and a slagging system; moreover, a waste heat boiler and a flue gas treatment system are connected with the burning furnace to form a complete garbage burning and generating system. The feeding system consists of a feeding hopper, a pre-drying conveying device, an aggregate bin, a chute and a charge distributor. The feeding hopper is a receiving opening for feeding garbage into the burning furnace and is arranged in a garbage storage pit close to one side of the burning furnace. An outlet of the feeding hopper is connected with an inlet of the pre-drying conveying device. A material level switch is arranged in the feeding hopper, and gives an alarm to prompt an operator to feed materials when the material level is lower than a set value so as to ensure that the hopper is not empty. The outlet of the hopper can be selectively provided with a feeding device. The burning furnace has the advantages of high burning speed, high burning efficiency, high slag burning degree, easy control, lower energy consumption, low pollution, low cost and investment conservation, and is applicable to domestic garbage with low thermal value and high moisture; and the garbage does not need to be pretreated.

In a homogeneous charge compression-ignited internal-combustion engine, based on information regarding the operational state of the engine, a combustion mode switching discriminator selects a homogeneous charge compression-ignited combustion mode if engine operating conditions allow homogeneous charge compression-ignited combustion. If not, the combustion mode switching discriminator selects a spark-ignited combustion mode. Immediately after switching from spark-ignited combustion to homogeneous charge compression-ignited combustion, a combustion mode switching corrector outputs switching correction values for operating quantities for homogeneous charge compression-ignited combustion. The correction values are used to adjust the operating quantities for homogeneous charge compression-ignited combustion, and new operating quantities obtained from the adjustments are output as control quantities from a combustion mode selector.

A method and device for controllably combusting combustible material, including a combustion device comprising an elongate combustion tube having an inlet section including an inlet for combustible material, an ignition section, including an igniter displaced along a length of the tube from the inlet section to ignite the combustible material, and at least one energy extraction device operatively coupled to the combustion tube and configured to extract energy from combustion of the combustible mixture.

This invention comprises a new process for developing high regression rate propellants for application to hybrid rockets and solid fuel ramjets. The process involves the use of a criterion to identify propellants which form an unstable liquid layer on the melting surface of the propellant. Entrainment of droplets from the unstable liquid-gas interface can substantially increase propellant mass transfer leading to much higher surface regression rates over those that can be achieved with conventional hybrid propellants. The main reason is that entrainment is not limited by heat transfer to the propellant from the combustion zone. The process has been used to identify a new class of non-cryogenic hybrid fuels whose regression rate characteristics can be tailored for a given mission. The fuel can be used as the basis for a simpler hybrid rocket design with reduced cost, reduced complexity and increased performance.

The present invention is intended to configure a diesel particulate filter to allow the burning rate of particulates to increase even with a small amount of catalytic metal or even without using any catalytic metal. In the diesel particulate filter, walls forming exhaust gas channels in a filter body on which the particulates are trapped are coated with a catalyst layer for promoting the burning of the trapped particulates. The catalyst layer contains a mixed oxide in which Ce, Zr and a rare earth element R other than Ce are contained in a Ce/(Ce+Zr) mole ratio between 10% and 90% both inclusive or between 20% exclusive and 80% inclusive.

The invention discloses a spiral grain type solid-liquid rocket engine. The spiral grain type solid-liquid rocket engine comprises a head cover, a jetting panel, a front combustion chamber, a combustion chamber shell, a grain, a rear combustion chamber, a rear sealing head, a spraying pipe and a spraying pipe pressing plate. A threaded groove is designed in the inner wall of the grain, and therefore the combustion speed of the grain can be effectively increased, and the performance of the solid-liquid rocket engine is improved. For the solid-liquid rocket engine in which the specific value of the length of the grain to the inner diameter of the grain ranges from 5 to 15 and the ratio of the inner diameter of the grain to the outer diameter of the grain ranges from 1/6 to 1/2, the grain is subjected to optimization design. The spiral grain type solid-liquid rocket engine has the beneficial effects that the combustion speed of the solid-liquid rocket engine can be better increased, and the performance of the solid-liquid rocket engine is improved.

A process for combusting fuels, in particular waste, includes reducing the oxygen mass flow of the underfire combustion gas and increasing the oxygen mass flow of the overfire combustion gas in the event of an increase in the reaction rate or combustion intensity.

The invention provides a quantitative determination method for carbon sources in blast furnace gas dust. The quantitative determination method comprises calibration and detection steps, wherein the calibration step comprises the steps: obtaining Raman spectrums of various coke samples with different coke mass ratios and determining a D peak and G peak strength ratio ID/IG according to the Raman spectrums, and a trough lowest point V peak and G peak strength ratio IV/IG between a D peak and a G peak, and taking the D peak and G peak strength ratio ID/IG and the trough lowest point V peak and G peak strength ratio IV/IG as evaluation indexes to establish a mapping relation between the ratio of carbon-containing substances in coal of the sample or a coke sample and the evaluation indexes; the detection step comprises the steps: carrying out a Raman spectrum analysis on the blast furnace gas dust to be detected and determining the ID/IG and the IV/IG; matching on the established mapping relation according to the two strengths; and determining the ratio of the carbon-containing substances of the coal or the coke of the blast furnace gas dust to be detected so as to obtain the carbon sources. According to the quantitative determination method for the carbon sources in the blast furnace gas dust, the ratio of the carbon-containing substances of the coal or the coke can be quantitatively analyzed based on the Raman spectrum analysis; the method is reliable, simple and rapid to operate, strong in applicability and low in cost.

A non-laminated gas producing agent and its production are disclosed. The non-laminated gas producing agent consists of oxygen-enriched carbamidine nitrate 40-60% with granularity 0.5-6mu, basic copper nitrate 10-28% as oxidant with granularity 0.5-6mu, copperon oxide of catalyst with primary oxidant 15-30% with granularity 0.1-6mu, and clay or paraffin wax 0.1-3% as process assistant with granularity 1-20mu. The production is carried out by: breaking the materials, adding into mixer by proportioning, mixing, sieving by screen, adding water 10-30%, agitating, drying, sieving the dried materials by screen with 20-80 mesh to obtain medicine particles, pressing into tablets, and drying the tablets under 100-120deg.C for 1.5-2.5hrs with water content <0.4%. It achieves wide regulating range, high gas output efficiency, and clean gas composition.

The invention discloses a method for reducing solid fuel consumption. The method comprises the following steps: 1) a solid fuel for sintering is screened to three particle grades of 2.0-3.0 mm, 0.5-3.0 mm and less than 0.5-1.0 mm; 2) the solid fuel with the particle grade of less than 0.5-1.0 mm is mixed with such sintered raw materials as iron ore, flux, return mines and other dust; and the above materials are added in a primary mixing machine for mixing; 3) the mixture and the solid fuel with the particle size of 0.5-3.0 mm are conveyed to a secondary mixing machine for mixed pelletization; and 4) the obtained mixture and the solid fuel with the particle size of 2.0-3.0 mm are input to a tertiary mixing machine, and are mixed and conveyed to a sintering machine for distribution, ignition and sintering. The method can improve the combustion speed and efficiency of the solid fuel, improves the pelletization effect of the sintered mixture, improves the material layer permeability in the sintering process, improves the sintered mineral product quality, and reduces the environmental pollution.

The present invention provides a new and improved flame retarded polyolefin composition that displays good retained physical properties upon aging. The composition also exhibits excellent moldability and it may be easily colored. In a preferred embodiment the composition includes a polyolefin, a halogen-containing flame retardant additive, from at least about 1.00% by weight to about 2.5% by weight of a stabilizer package, and from about 0% to about 1.0% by weight of an acid/halogen scavenger. The stabilizer package includes by weight from about 20% to about 80% of a hindered phenolic antioxidant, from about 20% to about 80% of a phosphite containing antioxidant, and from about 0% to about 40% of a thio-ester antioxidant. In addition to displaying excellent color and physical property development and retention characteristics, the composition of the present invention displays an improved UL94 vertical burn rating.

A supplementary slurry fuel atomizer of this invention, when used on a piston internal combustion engine, equipped with a common rail fuel injection system, improves slurry atomization, following injection, by expansion of gases, previously dissolved in the water phase of the slurry. This gas expansion separates the several fuel particles in each slurry droplet formed first during fuel injection. The thusly separated fuel particles subsequently burn more rapidly and completely, due to this fuel particle separation improving air access to the fuel. Apparatus is described for dissolving atomizing gas into the water phase of the slurry, in a contactor chamber at a pressure greater than the pressure prevailing in the engine cylinder volume, at the time of slurry injection.

The invention provides a high-efficiency porous medium burner used in a micro thermo photovoltaic system, relating to the technical field of combined combustion of a two-phrase gas. SiC ceramic spherules with diameter of 0.3mm to 0.35mm are filled in a shell of the burner in the form of oblique parallelepiped and then sintered with the shell to form a porous medium structure with porosity epsilon equal to 26 percent to 27 percent and a tail gas discharging channel is arranged on the external wall of the burner. The shell of the burner is processed first and then a bottom cover (3) of the burner is processed and sintered with the shell, and finally, in the interior of which the screened SiC ceramic spherules with diameter of 0.34mm are filled, after sintering, the porous medium structure is formed and the tail gas discharging channel is arranged in the interior of the shell (2) of the burner. The porous medium burner reduces the heat loss brought by increase of surface to volume ratio due to microscale, greatly improves the temperature distribution on the external wall of the burner, promotes combustion efficiency and combustion stability, lowers gas discharging temperature and heightens the temperature of the external wall, thus greatly advancing the efficiency of the whole micro thermo photovoltaic system.

The invention discloses a waste incineration boiler. The waster incineration boiler mainly comprises a hearth and a combustion chamber, three flues and a tail flue which are connected to the hearth sequentially, wherein the upper part of the hearth is provided with a boiler barrel, and the lower part of the hearth is provided with a grate; and a slag and ash discharging device is arranged on the lower part of the grate. The waste incineration boiler is characterized in that the grate is a reciprocating multi-row grate; an auxiliary burner is arranged on the side wall on the lower part of the hearth; a start-up burner is arranged on the rear wall on the lower part of the hearth; and a high-temperature gas-air preheater and a superheater are respectively arranged in the three flues from bottom to top sequentially. The invention makes household waste with low heating value, high moisture content and high ash content sufficiently combusted and burnt out in the waste incineration boiler. The waste incineration boiler can effectively inhibit generation of harmful gas. Steam generated by the boiler is used for generating electricity and supplying steam. The waste incineration boiler realizes reduction, hazard-freetreatment and recycling of waste treatment furthest.

The invention discloses a combustion treatment method of urban sludge, which is provided for overcoming the disadvantages of the existing incineration treatment of urban sludge, such as low burn-out rate, poor treatment of urban sludge, high energy consumption, and long treatment time. The pump pressurizes the ignition fuel into the furnace and ignites it in an atomized state; stirs and mixes the municipal sludge and finished coal-water slurry in a certain proportion to form a liquid fuel, pressurizes it with a slurry pump and injects it into the furnace through the burner, and sends the compressed air to The nozzle makes the liquid fuel in an atomized suspension state and is ignited by the ignition fuel, and the urban sludge can be disposed of. Using the above-mentioned process to treat municipal sludge does not require dehydration and drying treatment, and does not waste energy; liquid fuel burns fully and quickly in the state of atomization and suspension, with less residue and can be used as building materials, so municipal sludge can be thoroughly processed Clean, recycle the heat, turn waste into treasure, and dispose of the largest amount of urban sludge with the least amount of finished coal-water slurry fuel.

The invention relates to a low-NOx slag tapping double-swirl pulverized coal burner, which is suitable for 2-35 ton steam and hot water boiler and burning devices desired for heat energy for various kinds of industrial productions such as furnace, forging, steel making, road and bridge mixing station, and cold aggregate heating. The low-NOx slag tapping double-swirl pulverized coal burner comprises an adjustable burning device and a cylindrical burning chamber and is characterized in that the housing of the burning chamber is a heat insulating layer; a cooling water channel or a secondary air heat exchange fin is arranged between the housing the burning chamber and a secondary air chamber; a cooling water outlet pipe and a cooling water inlet pipe are respectively arranged on the upper and the lower ends of the cooling water channel; and a primary gas axial flow generator is arranged on the top of the jacket of an adjusting screw. The low-NOx slag tapping double-swirl pulverized coal burner has the advantages of sufficient burning and improved service life.