7074results about How to "Improve combustion efficiency" patented technology

The invention relates to multi-column sectional drive combined type domestic incinerator. It is set three fire-grates that drying section, burning section, and firing section. The middle fire grate is connected between them. There is altitude fall between them that the drying section is the highest point; the firing one is the lowest point. The primary air chamber is respectively set under them. The incinerator fire grate system of the invention has independent drive mechanism, air supply system, and air chamber for each section which is convenient for controlling technical parameter that traveling speed, air quantity, air temperature, air pressure etc to realize full drying and burning for whole garbage layer.

A main swirler of a triple annular configuration that is partitioned by a pre-filmer and a separator is installed in an inlet port of a main air flow channel. The vicinity of the inner wall of the main air flow channel provided with a main fuel injection port is bulged radially outward from the innermost surface (innermost surface of a small swirler) of a main swirler. Further, a distance from the main fuel injection port and the pre-filmer is set such that an effective opening area between the pre-filmer and “the inner wall of the main air flow channel provided with the main fuel injection port” is equal to an effective opening area of the small swirler. The swirling directions of the swirlers of the main swirler are “clockwise”-“counter-clockwise”-“clockwise” respectively along the radial outward direction when the swirling direction of the innermost swirler is taken as “clockwise”.

A catalytic combustion improver of coal for increasing combustion efficiency and decreasing the exhaust of SO2, CO and NOx is composed of the primary raw materials chosen from 17 salts of organic acid, including acetate, oxalate, succinate, etc, the organic compound prepared by reaction between 17 organic acids and ore, metal, metallic oxide, or compound, chloride, etc, and the secondary raw materials chosen from high-caloricity agent, surface coating agent, solvent, assistant, emulsifying disperser, sulfur fixating agent and filler.

The invention discloses an optimum dual-inlet and dual-outlet steel ball coal grinding machine direct-blow type powder-preparation control method. The method obtains the material position of the coal grinding machine after carrying out soft-measurement processing by collecting the noise material position of the coal grinding machine, the material position of pressure difference, the current of the coal grinding machine, one-time air quantity, one-time opening of the hot wind door and the cold wind door of an inlet, inlet temperature and outlet temperature; the control comprises material position control, air quantity capacity control, bypass air quantity control and the temperature control of the inlet and the outlet; the material position is optimized and the best material position of the coal grinding machine is searched online so as to ensure the combustion safety of the boiler and coal powder supply quantity when the load of the boiler is adjusted. The boiler combustion is optimized: according to the boiler technology, the load and the running working conditions, the powder supply quantity and the ventilation quantity of each coal grinding machine are optimized and the combustion efficiency of the boiler is improved. Malfunction diagnosis, running evaluation and analysis are carried out to the system and reasonable suggestions are provided so as to ensure the system to run continuously, stably, safely and economically; the optimum dual-inlet and dual-outlet steel ball coal grinding machine direct-blow type powder-preparation control method is widely applied to the dual-inlet and dual-outlet steel ball coal grinding machine direct-blow type powder-preparation system or industrial similar systems in other industries.

A gas turbine fuel injection system of the lean direct injector type designed to reduce nitrous oxide (NOx) emissions is provided. The configuration includes a pilot fuel injector for injecting a pilot fuel stream, and a pilot swirler for providing a swirling pilot air stream to atomize and entrain the pilot fuel stream. A main airblast fuel injector is located concentrically about the pilot fuel injector, for injecting a main fuel stream concentrically about the pilot fuel stream. Inner and outer main swirlers provide a swirling main air stream to atomize and entrain the main fuel stream. An air splitter is located between the pilot swirler and the main swirler. The air splitter is so arranged and constructed as to divide the pilot air stream exiting the pilot swirler and the air splitter, from the main air stream exiting the inner main swirler, whereby a bifurcated recirculation zone is created.

A fuel additive for middle distillate fuels is a mixture of at least one methyl, ethyl, propyl or butyl ester of a vegetable oil or a C₁₆-C₁₈ fatty acid, at least one alkyl ether of propylene glycol, a surfactant, and an antioxidant. A fuel additive for gasoline is a mixture of ligroin or toluene/xylene, at least one alkyl ether of propylene glycol, a surfactant, and tertiary amyl methyl ether.

A fuel system is provided for generating hydrogen and oxygen for use in an internal combustion engine to improve combustion efficiency, horsepower, and torque and to decrease emissions. The fuel system has at least one electrolysis cell for generating hydrogen and oxygen by electrolysis of an aqueous solution, a power source for providing electrical power to the electrolysis cell, and a heating and cooling system for maintaining the temperature of the electrolysis cell in a desired range to obtain the desired quantities of hydrogen and oxygen for operation of the internal combustion engine. The invention also includes an electrode array of a plurality of spaced apart electrodes for use in this fuel system and a nonconductive support connected to each of the electrodes to hold the electrodes in place, while leaving adequate room around the electrodes to allow free flow of the aqueous solution between the electrodes. High purity electrolyte and substantially non-reactive electrodes result in improved electrolysis.

An apparatus including a reciprocating internal combustion engine and a thermochemical recuperator in which a fuel is reformed. The thermochemical recuperator is heated by exhaust gases from the reciprocating internal combustion engine and steam for the reforming process is produced by passing feed water through an engine lubricating oil heat exchanger, an engine cooling system heat recovery system and an exhaust gas heat recovery system arranged in series.

The present disclosure provides an integrated power generating system and method that combines combustion power generation with solar heating. Specifically, a closed cycle combustion system utilizing a carbon dioxide working fluid can be increased in efficiency by passing at least a portion of a carbon dioxide working fluid through a solar heater prior to passage through a combustor.

An engine system and a method of controlling a combustion process in an internal combustion engine are disclosed. The combustion process is based on compression ignition of a stratified air-fuel mixture using a high octane fuel such as gasoline. Multiple fuel injections may be used in a given combustion cycle. Fuel injection timing, EGR, exhaust rebreathing, late intake valve closing, and intake boost are controlled to enable autoignition over essentially the entire speed and load operating range of the engine, while providing reduced emissions, low noise, and low fuel consumption.

A method is provided for converting organic material from domestic refuse into fuel for use in a pulverized coal power plant, comprising of mixing the organic material with at least one flammable material while adding binder, and pressing the mixture to form hard, relatively brittle agglomerates. Further provided is an installation for converting organic material from domestic refuse into fuel, comprising a device for mixing the organic material with at least one flammable material while adding binder, and device for pressing the mixture to form hard, relatively brittle agglomerates.

A combustor includes outer and inner liners joined together by a dome to define a combustion chamber. A row of air swirlers is mounted in the dome and includes corresponding main fuel injectors for producing corresponding fuel and air mixtures. Pilot fuel injectors fewer in number than the main injectors are mounted in the dome between corresponding ones of the swirlers. Staged fuel injection from the pilot and main injectors is used for starting the combustor during operation.

A thermal type fluid flow sensor includes an air flow detecting portion and a temperature detecting portion formed above the same substrate, capable of correcting a humidity, and having a high measuring accuracy at a low cost, and a heat generating resistor, a temperature measuring resistor for the heat detecting resistor, a temperature measuring resistor for detecting an air flow, and a heat generating resistor for detecting a humidity are arranged in a diaphragm formed above a semiconductor substrate, an air cavity layer, and a protecting film above the air cavity layer are formed above the heat generating resistor for detecting the humidity, and the protecting film is provided with plural holes reaching the air cavity layer.

A fuel injector system that reduces and/or eliminates combustion instability. The fuel injector system includes a pilot fuel injector, a pilot swirler that swirls air past the pilot fuel injector, a main airblast fuel injector having an aft end, inner and outer main swirlers that swirl air past the main airblast fuel injector, and an air splitter located between the pilot swirler and the inner main swirler. The air splitter includes at least one aft end cone angled radially outboard and axially positioned downstream of the main airblast fuel injector aft end. The air splitter divides a pilot air stream exiting the pilot swirler from an inner main air stream exiting the inner main swirler to create a bifurcated recirculation zone.

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.

The present invention relates to environmental protection engineering technology, and is especially sludge drying and incinerating treatment process. The present invention has effective utilization of heat energy, no exhaust of harmful gas and bad smell, no exhaust of dangerous clinker, simple structure and high burning efficiency of the sludge incinerating system, no need of auxiliary fuel and other advantages.

The tangential standing vortex burning chamber in annular flame tube structure consists of inner and outer boxes and inner and outer flame tubes separately inside the inner and the outer boxes. The outer flame tube has one circumferential head including oil nozzle and flame stabilizing tube, and one main burning hole in the downstream of the head, and the central line of the head and the main burning hole is in some angle to the circumference tangent. The inner and outer flame tubes have inner and outer mixing holes separately in front of their combustors to ensure the excellent outlet temperature distribution, and inclined cooling holes in the walls and inclined to the main burning holes. The present invention has raised liquid atomizing combustion efficiency, reduced combustor outlet temperature distribution coefficient and expanded stable operation range of combustor.

The invention discloses turbine-based combined cycle engine super-combustion chamber. Key parts of the super-combustion chamber comprise a shunt ring, a rear area-variable deflation valve, a flow guide tongue piece, a square lobe mixer, a first area fuel ejector, a center cone, a second area fuel injection ring, an evaporation tube flame stabilizer, a heat-isolating screen, a super-combustion chamber cylinder, an outer extending groove-width-variable radial flame stabilizer and an inner extending radial flame stabilizer. An internal flow field of the super-combustion chamber is reasonably distributed, the phenomenon of backflow from a punching duct to a turbofan duct can not occur, flow separation can not occur in the square lobe mixer, and the evaporation tube flame stabilizer can achieve soft ignition of the super-combustion chamber. The whole super-combustion chamber is high in mixing efficiency, little in cold flow resistance, high in combustion efficiency, reasonable in temperature distribution, and capable of meeting use requirements in a whole flight envelope of the super-combustion chamber in each work state and the requirement for boost of an turbofan ramjet.

The invention is directed to a variable compression ratio internal combustion engine in which the compression ratio of the engine can be varied and multiple types of fuels having different combustion velocities are used. The invention provides a technology for achieving excellent engine performance for respective types of fuels. In the variable compression ratio internal combustion engine in which the compression ratio can be varied and multiple types of fuels having different combustion velocities are injected through multiple fuel injection valves, maps from which a target compression ratio of the internal combustion engine is read out are switched in accordance with the fuel used, thereby suppressing knocking or other disadvantages.

The invention discloses a combustion feedforward and feedback composite optimization controlling method for a pulverized coal fired boiler. The method is used for realizing dynamic accurate proportioning of wind and coal under a full working condition and in the full combustion process. According to the technical scheme, the method comprises the following steps of: determining feedforward signals according to combustion adjusting experiment data or operation personnel experience, determining feedback signals according to the thermodynamic properties and laws of the boiler, and automatically and accurately adjusting the coal quantity proportion of each burner, the primary air quantity proportion of each coal mill, the outlet temperature of each coal mill and the secondary air quantity and burning-out air quantity proportion of each burner under different working conditions to keep the burning efficiency and the NOX discharge of the boiler in an optimal state. By the method, the advantage of coexistence of a plurality of independent adjusting means of the large pulverized coal fired boiler and the advantages of high dynamic response speed of feedforward control and high static precision of feedback correction control are fully exerted, the pulverized coal fired boiler is close to the optimal state under various working conditions, the burning efficiency of the boiler is improved, and the discharge of NOX is reduced.

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.

The invention discloses a nozzle of a combustion chamber of a miniature gas turbine, relates to the gas turbine technology, and in particular to a small size fluid fuel nozzle used in a combustion chamber of a 100 kW level miniature gas turbine. The nozzle consists of three parts which are a fuel oil passage, a fuel air passage and an air channel at the root of a burner, comprehensively utilizes the advantages of pneumatic nebulization and pressure atomization, and is a combined type high performance pneumatic atomizing nozzle. The nozzle of the invention has the characteristics that: the nozzle adopts a conventional processing method to realize excellent atomization of the fuel in small scale space, so as to meet the requirement for the quality of fuel atomization under a quite wide burden of the combustion chamber of the miniature gas turbine; the nozzle can avoid burnout and overcomes the defect of nozzle blockage caused by high temperature coking of the fuel; meanwhile, the nozzle can make the fuel in the combustion chamber to be combusted more fully and reduce discharge of pollutants such as smoke black and so on.