364results about How to "Improve combustion efficiency" patented technology

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 gas burner capable of adjusting gas to be self-recycling. The gas burner capable of adjusting the gas to be self-recycling comprises a center fuel pipe, a primary rotational-flow air duct, a secondary direct-flow air duct and an ejector, wherein the center fuel pipe, the primary rotational-flow air duct, the secondary direct-flow air duct and the ejector are coaxial from inside to outside and sequentially embedded in a sleeved mode. A fuel nozzle is formed in the outlet segment of the center fuel pipe, an air cyclone and a pre-mixing chamber are arranged inside the primary rotational-flow air duct, the primary rotational-flow air duct and the pre-mixing chamber are communicated with the fuel nozzle, both an outlet of the pre-mixing chamber and the outlet end of the secondary direct flow air duct are arranged at the throat position of the ejector, a main flame burning area is formed at the throat position of the ejector, an electronic igniter is further arranged inside the primary rotational-flow air duct, one end of the electronic igniter penetrates through the air cyclone, the ignition electrode of the electronic igniter is arranged inside the pre-mixing chamber, the end surfaces, being connected with the head of the burner, of the ejector are of a sawtooth disk structure and meshed with each other, and linkage mechanisms are arranged at the positions of the sawtooth disk structures and fixed on the outer pipe wall of the secondary direct-flow air duct. The gas burner capable of adjusting the gas to be self-recycling has the advantages of being easy to manufacture, and capable of achieving the objective that the adapting range of fuel is wide, burning efficiency is high, burning is stable, and pollution is low.

The invention discloses a biomass solid formed fuel anti-slagging additive and a preparation method thereof, which belongs to the technical field of renewable energy sources and is used for solving the problems that straw biomass solid formed fuel has high alkali metal content, is slagged in the combustion process and the like. The anti-slagging additive mainly comprises 15% to 25% of magnesium carbonate, 20% to 30% of alumina and 45% to 65% of the calcium carbonate, different formula ratio is made according to different biomass raw materials; and the anti-slagging additive is added into different biomass raw materials according to the proportion of 1% to 5%. The preparation method comprises the following steps: the calcium carbonate is firstly put into a special container, the container keeps dry, then alumina is added, finally the magnesium carbonate is added, the mixture is ground and evenly mixed for 10 to 15 minutes with the grinding particle size less than 1 mm, and then a finished product is obtained. The additive can solve the problem of slagging in the combustion process of the formed fuel and increases the combustion efficiency of the formed fuel.

The invention relates to biomass fuel oil. The biomass fuel oil comprises the following components in percentage by weight: 10 to 15 percent of vegetable oil, 10 to 40 percent of bio-alcohol, 5 to 15 percent of bio-diesel, 0 to 5 percent of fatty acid, 5 to 15 percent of mutual solvent, 0 to 10 percent of combustion accelerant, 0.1 to 1 percent of solid base catalyst, 0.1 to 1 percent of combustion improver, 0.1 to 0.5 percent of oxygenate and 0.1 to 0.5 percent of detergent. A preparation method of the biomass fuel oil comprises the following steps of: a, adding and uniformly stirring the vegetable oil, the bio-alcohol and the mutual solvent in a reaction kettle, adding the solid base catalyst into the mixture and stirring the mixture to form suspension; and b, heating the suspension to 50 to 70 DEG C, making the suspension flow back through a condenser, stirring the obtained product for 10 to 90 minutes, cooling the product to the room temperature, filtering off the solid base catalyst, then sequentially adding the bio-diesel, the fatty acid, the combustion accelerant, the combustion improver, the oxygenate and the detergent and stirring and reacting the mixture for 20 to 30 minutes to obtain the biomass fuel oil. The biomass fuel oil provided by the invention has the advantages of high combustion value, high lubricating property and high flash point.

The invention provides a premixing pre-vaporization combustion chamber for a main combustible stage of a discrete pipe. The combustion chamber is in a single annulus structure, and consists of a combustion chamber outer case, a combustion chamber inner case, a flame tube outer wall, a flame tube inner wall and a combustion chamber head, wherein combusting air completely enters a flame tube from the combustion chamber head, a staged combustion scheme, namely a pre-combustible stage and the main combustible stage, is adopted; a swirl cup is adopted in the pre-combustible stage which is of a diffusion combustion organization mode; a premixing pre-vaporization device is adopted in the main combustible stage, a main combustible stage nozzle supplies fuel axially, the fuel is vaporized in the premixing pre-vaporization device and blended with air, the uniformly mixed combustible gas enters the combustion chamber to participate in combustion, namely a premixing combustion organization mode. The pre-combustible stage controls the range of stable work of the combustion chamber, and provides a stable ignition source for the main combustible stage; and the main combustible stage controls main pollution emission of the combustion chamber, and lower pollution emission of the combustion chamber is realized by controlling the equivalence ratio of premixed gas of the main combustible stage. The premixing pre-vaporization device has a simple structure, and can realize that the pollution emission of an aircraft engine combustion chamber can be reduced on the basis of not influencing the combustion stability.

The invention relates to a two-oil-way three-air-way multi-rotational-flow air atomizing nozzle structure. The air atomizing nozzle structure is used for reducing the atomizing diameter of liquid fuel and improving the burning efficiency of a burning chamber; axial rotational flow blades are arranged on a first-stage air way, a second-stage air way and a third-stage air way; a main oil way of a fuel oil pipe is communicated with a main oil way of a nozzle through a plurality of sector fuel runners, and an auxiliary oil way of the fuel oil pipe is communicated with an auxiliary oil way of the nozzle; the auxiliary oil way of the nozzle is located between the first-stage air way and the second-stage air way, and the main oil way of the nozzle is located between the second-stage air way and the third-stage air way; the inner wall faces of the tail ends of the main oil way and the auxiliary oil way of the nozzle are provided with a plurality of rows of fuel jetting holes, and the fuel jetting holes are arranged in sequence or in an intersected manner; the rotation directions of the first-stage rotational flow blade and the third-stage rotational flow blade are the same and are opposite to the rotation direction of the second-stage rotational flow blade; and air flow in the first-stage air way and the third-stage air way directly enters the first-stage air way and the third-stage air way of the nozzle in the axial direction, and air flow in the second-stage air way enters the second-stage air way through radial rectangle air inlet holes evenly distributed on the outer wall face of the air atomizing nozzle by a certain angle in the circumferential direction.

The invention discloses a biomass distributed combined cooling heating and power energy system, and belongs to the technical field of renewable energy. According to the technical scheme, the system comprises a biomass burner (1), a Stirling engine (5), a heat exchanger (10), a generator (14) and an absorption refrigerator (24), wherein flue gas generated by the biomass burner (1) is purified and then enters the Stirling engine (5); generated power is provided for the generator (14) through an output shaft (13) to generate electric energy; generated hot waste gas enters the absorption refrigerator (24) through a hot waste gas pipe (15) for refrigeration and heating; and cooling water passes through the heat exchanger (10), so that air is preheated, and hot water is provided; and therefore, combined cooling heating and power is realized. A biomass fuel is taken as a raw material, the flue gas generated by burning passes through the Stirling engine to generate the power for direct power generation, the hot waste gas passes through the absorption refrigerator for refrigeration and heating, and the air is preheated and the hot water is provided by a heat exchange device, so that cascade energy utilization is realized.

The invention discloses a combustion zone pore step type porous medium burner, and relates to the field of burners. The burner comprises a burner outer shell, and a protection zone, a preheating zone and a combustion zone are sequentially arranged in the burner outer shell in the air current flow direction; the preheating zone and the combustion zone are filled with porous media; a plurality of porous medium layers of different pore density are formed in the combustion zone in the radial direction; and pore density of the porous media of the porous medium layers in the combustion layer is smaller than pore density of the porous media of the preheating zone. According to the combustion zone pore step type porous medium burner, sharp temperature gradient, nonuniform temperature distribution and local high temperature zones near a flame surface can be effectively avoided, the phenomena of nonuniform flame distribution and unstable flame are successfully avoided, combustion is more sufficient, NOx and CO emission is greatly reduced, solid temperature of the wall surface can be regulated, heat loss of the wall surface is reduced, combustion efficiency of the burner is improved, temperature change of solids is smooth, thermal stress is low, and service life of the burner is prolonged.

The invention discloses an energy concentrating assembly of a gas stove. The energy concentrating assembly comprises an annular first energy concentrating cover. The inner side edge of the first energy concentrating cover is lower than the outer side edge of the first energy concentrating cover. The energy concentrating assembly is characterized by further comprising a second energy concentrating cover arranged on the outer side of the first energy concentrating cover; the second energy concentrating cover is in an annulus shape, and the inner side edge of the second energy concentrating cover is lower than the outer side edge of the second energy concentrating cover; a gap is reserved between the first energy concentrating cover and the second energy concentrating cover to form a gas mixing passage; a smoke inlet of the gas mixing passage is formed between the outer side edge of the first energy concentrating cover and the corresponding position of the peripheral wall of the second energy concentrating cover; an outlet of the gas mixing passage is formed between the inner side edge of the first energy concentrating cover and the corresponding position of the peripheral wall of the second energy concentrating cover; and a plurality of through holes are formed in the peripheral wall of the second energy concentrating cover to form air inlets of the gas mixing passage. Through the arrangement, smoke generated from combustion and secondary air are mixed for secondary combustion; and the combustion efficiency can be improved, combusting is sufficient, and nitric oxides are effectively decreased.

A wood burning hydronic heater comprises a primary firebox into which the wood is loaded and wherein initial combustion occurs. The heater also includes a secondary combustion chamber below the primary firebox into which the combustible gases from the primary firebox are forced and into which a fresh air stream is passed to burn the gases. A primary heat exchanger downstream of the secondary combustion chamber is adapted to reduce the temperature of the exhaust exiting from the secondary combustion chamber. A catalytic combustor, located in a chamber downstream of the secondary combustion chamber and primary heat exchanger, completes combustion and reduces emissions.

The invention provides an intelligent control system of an automatic optimizing combustion of a hot-blast stove, comprising a mixed gas flow regulator (FIC-101), a vault temperature regulator (TIC-101), a combustion-supporting air flow regulator (FIC-102), a heating load regulator (QX-102), a waste gas temperature regulator (TIC-102) and an air-fuel ratio fuzzy controller. The invention can improve the combustion control level of the hot-blast stove, has high combustion efficiency, fully utilizes energy and has strong energy storage capability.

The invention discloses a hydrocarbon fuel reforming combustion method for a micro combustor, which comprises the following steps: firstly, introducing gaseous hydrocarbon fuel and wet air into a reforming area filled with a gamma-Al2O3 catalyst to produce coupling self-heating reforming reaction so as to generate partial hydrogen; and then introducing the gas after the reaction into a combustion cavity for combusting, wherein the volume ratio of the gaseous hydrocarbon fuel to the wet air is 1: 1.2-1: 1.6. Meanwhile, the invention also discloses a device for implementing the method. The front end of the combustion cavity is provided with the reforming area, the gaseous hydrocarbon fuel and the wet air are introduced into the reforming area, and the gaseous hydrocarbon fuel and the wet air undergo the coupling self-heating reforming reaction (comprising the oxidation reaction of the hydrocarbon fuel and the oxygen and the reforming reaction of the hydrocarbon fuel and the water vapor) under the action of the gamma-Al2O3 catalyst to generate partial hydrogen so as to aid the efficient and stable combustion of the gaseous hydrocarbon fuel and the air in a combustion area.

The invention discloses a sludge drying and burning device with a low NOx discharge and a drying and burning method. A rotary drying furnace has a telescopic structure, a material chamber is orderly connected to a hopper, a piston feeder, and a first inlet of the rotary drying furnace through a pipeline; a first outlet arranged in the bottom of the inner cylinder of the rotary drying furnace is connected to a spiral feeder; a second outlet arranged in the inner cylinder of the rotary drying furnace is orderly connected to a chiller, a wind turbine, and a sludge drying and pyrolysis gas jet of a sludge burning device through a sludge drying and pyrolysis gas pipeline; the first inlet of the rotary drying furnace is connected to a first flue gas circulation pipe, the first outlet of the rotary drying furnace is connected to a second flue gas circulation pipe, the other end of the first flue gas circulation pipe is connected to a tail flue of the sludge burning device, and the other end of the second flue gas circulation pipe is connected to a circulation wind turbine and the feedback valve of the sludge burning device. A fuel staged combustion technology and a high temperature flue gas sludge drying technology are organically integrated so as to reduce the NOx discharge during the sludge drying and burning process.

The invention relates to the technical field of vanadium-titanium magnetite smelting, and provides a blast furnace vanadium-titanium magnetite smelting method by utilizing ultra-high oxygen enrichingair blasting. The content of oxygen in hot air of a blast furnace is increased to 26-41% level, the corresponding air blasting oxygen enrichment rate is 5-20%, and the combustion rate of coal powder at the front end of a tuyere is increased; the coal gas reducing potential is increased; the reducing, soft melting, dripping and slag forming process of the vanadium-titanium magnetite in the blast furnace is optimized, breathability of the blast furnace is improved, and it is guaranteed that production of the blast furnace is stably and smoothly performed; and the problems that in the process ofsmelting the vanadium-titanium magnetite through the blast furnace process, the coal ratio is low, the energy consumption is high, furnace slag is viscous and thick, breathability is poor and intensified smelting is difficult are solved. According to the method, it is adopted that high-concentration oxygen is extra added in the hot air of the blast furnace, the oxygen content in the hot air is increased, the coal spraying ratio can be increased, the coke ratio is reduced, the iron making energy consumption of the blast furnace is reduced, the smelting strength is improved, production of the blast furnace is stabilized, and the blast furnace smelting cost of the vanadium-titanium magnetite is reduced.

The invention relates to a local oxygen-enriched combustion transformation system for a conventional circulating fluidized bed boiler with an external bed. In the transformed system, secondary air is subjected to local oxygen-enriched combustion, while primary air, fluidizing air of a return feeder and fluidizing air of the external bed is still subjected to conventional air combustion. With the adoption of the transformation system, the combustion efficiency of the boiler can be improved, the heat loss of smoke vent is reduced, and the discharge amount of smoke pollutants, flow of air and smoke, output forces of a secondary air fan and an induced fan, and electrical load of a plant are reduced. The CO2 concentration in the flue gas is increased, the recovery cost of CO2 in industrial practices is lowered, and a solid foundation is laid for the whole oxygen-enriched combustion of the circulating fluidized bed boiler.

The present invention relates to a pulverized coal fired boiler with wall-attachment secondary air and grid overfire air. Primary burners including primary air spouts, secondary air spouts and close coupled overfire air spouts arranged at intervals along the height direction of a hearth are arranged on four corners of the hearth. Two-way wall-attachment secondary air spouts and one-way wall-attachment secondary air spouts are arranged from bottom to top in a primary combustion zone where the primary burners are located. One-way wall-attachment secondary air spouts are arranged in a reduction zone between the primary burners and the top overfire air spouts, and grid overfire air spouts are arranged in a burnout zone where the overfire air is supplied. By adopting the pulverized coal fired boiler with wall-attachment secondary air and grid overfire air according to the present invention, the NO amount generated in the hearth is reduced, the NO reduction rate along a flame is improved, the coke burnout rate is improved, less coke which is not burnt out enters into the burnout zone, slagging on the water-cooled wall is reduced, and ultralow emission of NOx may be realized on the premise that the combustion efficiency is not reduced, slag is not agglomerated in the hearth and the flue gas temperature deviation is small.

The invention discloses a gas water heater and a control method and system thereof. The control system of the gas water heater comprises a gas source proportional valve arranged on a gas source supply pipeline, and a controller controlling the opening degree of the gas source proportional valve, wherein the controller is electrically connected with the gas source proportional valve; the controller comprises a PWM (pulse width modulation) signal generating circuit for generating the control signals of the gas source proportional valve, and a current regulating network circuit which is composed of at least two selectively-switching current regulating branch circuits; the common input end of the at least two selectively-switching current regulating branch circuits is electrically connected with the output end of the PWM signal generating circuit, and the common output end of the at least two selectively-switching current regulating branch circuits is electrically connected with the control signal input end of the gas source proportional valve. By means of the current regulating network circuit, the gas water heater can automatically adapt to gas sources of different heat values to achieve optimization of burning performance.

The invention relates to a fuel or gas molten salt furnace which comprises five parts i.e. a smelt tank, a circulating pump, a heat carrier heating furnace, an electric control system and a transportation pipeline. The fuel or gas molten salt furnace is a direct current type heating furnace which takes fuel or gas as fuels, takes molten salts as a heat carrier, forces liquid phase to circulate by utilizing power generated by the circulating pump to transport heat energy to heat consuming equipment, and then returns he heat energy to the smelt tank to carry out circulation heating.

The invention discloses an energy-saving gas stove, which comprises a gas stove body, a combustor, a gas guide pipe and a gas mixing chamber, wherein the gas guide pipe is communicated with the gas mixing chamber and the combustor is communicated with the upper part of the gas mixing chamber. The gas stove additionally comprises an isolation hood, a waste gas exhaust pipe, an air guide pipe and a heat exchange device, wherein the isolation hood isolates combustion hot gas from the outside and the heat exchange device is used for heat exchange between incoming cold air and exhausted hot waste gas. The invention has the advantages that not only the gas is combusted more fully but also the thermal efficiency is effectively improved because heat contained in the waste gas produced during combustion is used for preheating the cold air participating in combustion, and the impact on body health caused by the waste gas is effectively avoided because the waste gas is fully exhausted. Moreover, since the heat generated by the gas in the closed gas combustion chamber is not rapidly dissipated around, the thermal efficiency of the gas stove is promoted.

The invention discloses a multifunctional biomass hot water boiler. The multifunctional biomass hot water boiler comprises a boiler body. A support is arranged at the bottom end of the boiler body. A boiler ash chamber is arranged at the upper end of the support. A combustion chamber is arranged on the left side of the top end of the boiler ash chamber. A hot water chamber is arranged in the middle of the top end of the combustion chamber. The upper end of the left side of the combustion chamber is connected with a purification chamber through a smoke exhaust pipe. An air inlet chamber is arranged on the right side of the top end of the boiler ash chamber. A crushing chamber is arranged at the top end of the air inlet chamber. According to the multifunctional biomass hot water boiler, a crushing wheel is arranged in the crushing chamber and can completely crush fuel, and the combustion efficiency and the combustion sufficiency are improved; boiler ash can be filtered, the full utilization rate of boiler slag is increased, and the boiler slag which is not combusted fully is prevented from being wasted; waste gas generated by combustion can be effectively purified, and the situation that the waste gas is exhausted directly and consequently pollutes the environment is avoided; and the multifunctional biomass hot water boiler has the advantages of being efficient, capable of saving energy and environmentally friendly, biomass fuel is adopted for combustion, the using cost is low, and the practicability is high.

The invention relates to a novel engine fuel additive, which belongs to the technical field of fuel additives. The fuel additive disclosed by the invention comprises the components of polyisobutylene amine and imine, polyisobutylene diamide and the imine, an antioxidative stabilizer, a surfactant, a medium-carbon alcohol, a combustion-supporting accelerating agent, an antiseptic agent, a basic solvent and the like. The fuel additive can be applied to a gasoline engine, a diesel oil engine and the like to improve the combustion efficiency of an engine fuel so as to improve the power performance of an engine, clean pollutants generated by combustion and wash deposits of an oil way and a combustion chamber, thereby realizing functions of oil saving, environmental protection and automobile maintenance.

The invention relates to a coal-gas combined efficient low-emission grate firing combustion apparatus and a technology. Pulverized coal and sulphur-fixing agent are fully mixed and conveyed into a combustion chamber, hot pulverized coal is added, and simultaneously, recycle smoke is introduced to the bottom, the pulverized coal is quickly pyrolyzed and generates reducing gas, and the reducing gas is sprayed at two sides of a reburning region, thus, local reducing atmosphere is formed, the aim of strengthening NOx reducing is realized, the unburnt particles are burnt sequentially in the burning region of the combustion chamber, the end gas generated after combustion participates in the smoke recycle after being led out and treated by dust extraction, and the smoke enters in the combustion chamber for being used in the above pyrolyzation and combustion. With the apparatus and the technology provided by the invention, the conversion of fuel nitrogen to NOx is reduced, and the combustion efficiency of a grate furnace can also be improved.

An inshot burner is provided including a burner body and a nozzle assembly provided in an outlet opening of the burner body. The nozzle assembly includes a disc-like member having a central hole therein and a plurality of radially spaced holes spaced around a perimeter of the central hole. A tube member is disposed in the central hole of the disc-like member.

The invention relates to a microparticle swarm fuel micro-combustion system based on digital holographic optical tweezers. The system comprises a first laser driver, a first laser, a first spectroscope, a second laser, an attenuation slice, a second reflection lens, a collimating lens group, a first reflection lens, a spatial light modulator, a beam-expanding lens group, a second spectroscope, an objective lens, a microparticle swarm fuel, a micro-combustion chip, a third spectroscope, a third reflection lens, a CCD (Charge Coupled Device) camera, an infrared camera, a first image acquisition card, a second image acquisition card, a data acquisition card, a computer, a nitrogen storage bottle, an oxygen storage bottle, a first flowmeter, a second flowmeter, a buffering tank, a first valve, a second valve and a gas chromatograph-mass spectrometer. The distribution pattern of the fuel can be effectively controlled through a digital holographic technology and the spatial light modulator, so that the combustion of the microparticle swarm fuel can be performed in the micro-combustion chip; the composition mode of the micro-combustion can be effectively improved; the combustion efficiency of the micro-combustion is improved.

The invention relates to an opening side skirt plate type on-duty flame stabilizer. According to the stabilizer, a row of bleed air holes are formed in two side skirt plates of the stabilizer, an airflow is introduced for supplementing and blending air in a central area after ignition of the flame stabilizer, so that the core temperature of the airflow is reduced, the temperatures of two sides are increased, and the purpose of improving the uniformity of temperature field is achieved finally; and meanwhile, the introduced airflow can be blended with unburned fuels for combustion, thus the purpose of improving the combustion efficiency of the stabilizer is achieved. According to the stabilizer, the uniformity of the temperature field behind the flame stabilizer and the combustion efficiency can be effectively improved, while the traditional bluff-body flame stabilizer is small in flame width and poor in temperature uniformity.

The invention discloses an industrial waste gas purifying device and an operation method. The industrial waste gas purifying device comprises a catalytic combustor, a spraying dust removal box, a dustremoval filtration box and an acid-base neutralization box, wherein an air inlet is formed in the bottom of the left side of the catalytic combustor; a combustor is fixedly arranged at the bottom ofthe catalytic combustor; the top of the right side of the catalytic combustor is movably connected to a waste heat exchanger by a pipeline; the bottom of the waste heat exchanger is movably connectedto an electrostatic generator by a pipeline; and the right side of the electrostatic generator is communicated with the lower end of the left side of the spraying dust removal box by a pipeline. The industrial waste gas purifying device has the beneficial effects that the industrial waste gas purifying device can meet the high efficiency purifying requirements on industrial waste gas through the catalytic combustor, the combustor, the waste heat exchanger, the electrostatic generator, a HEPA (High Efficiency Particulate Air) filter screen, a glass fiber coalescing filter element, a KDF filtering layer, a plasma generator, an ultraviolet lamp, a baffle plate, through holes, peat and pine bark and conforms to the benefit of industries and the state.

The invention discloses an intelligent pulse combustion system. The intelligent pulse combustion system comprises a gas pipeline, a combustion assisting air pipeline, a combustor and a control system; the gas pipeline introduces gas into the combustor; the combustion assisting air pipeline introduces air into the combustor; nd the control system controls coordinated work of the gas pipeline, the combustion assisting air pipeline and the combustor to realize intelligent pulse combustion control. The intelligent pulse combustion system realizes intelligent pulse combustion control through controlling the combustion state switching and the combustion lasting time of the combustor by the control system according to a deviated value between a detected industrial furnace actual temperature and a preset temperature. The intelligent pulse combustion system can realize precise control of a combustion atmosphere, improves the heat transfer efficiency, largely reduces the energy consumption, needs no online adjustment, can increase the burner load adjusting ratio, is simple and reliable, is low in manufacturing cost, and can reduce generation of NOx.

The invention discloses a stable and effective biomass pellet fuel combustion device and method. The stable and effective biomass pellet fuel combustion device comprises a combustion furnace shell, a primary air device, a secondary air device, an ignition device, a feed device, a burner, a heat exchange device, a stirring device and an ash tray. The stable and effective biomass pellet fuel combustion device and method are capable of guaranteeing the stable and effective combustion of the fuel and preventing slagging and caking in combustion so as to realize continuous stable combustion. The volatile component and fixed carbon in the biomass are burnt in two stages, the air quality is controlled, and the pollutant emission is lowered in combustion. The ignition device achieves low ignition energy consumption and low ignition pollutant emission; the combustion is safely isolated from stored materials; the stable and effective biomass pellet fuel combustion device and method have high energy conservation and emission reduction benefit and application value.

The invention belongs to the technical field of sintering equipment, and relates to a gas roller way kiln. The gas roller way kiln is characterized in that first-sixth units of a kiln body are preheating sections; smoke discharging branch pipes are arranged on the top surfaces and side surfaces of the first unit, the third unit and fifth unit of the kiln body; the smoke discharging branch pipes gather at a smoke discharging main pipe; seventh-twelfth units are sintering sections; a group of burners is arranged at the lower part of the roller way inside the seventh unit and eighth unit; eight groups of burners are arranged the ninth-twelfth units; thirteenth-twenty-first units are cooling sections; the thirteenth unit is a transition unit; the fourteenth unit is a quenching unit; the fifteenth-twentieth units are temperature dropping units; natural ventilation pipes are interlacedly arranged on the left and right side walls of the fifteenth-seventieth units; hot air extraction branch pipes are arranged at the tops of the eighteenth-twentieth units; an axial flow fan is arranged on each of the two sides of the twenty-first unit; the burners are reasonably arranged and are controlled by a PLC. According to the gas roller way kiln, accuracy of temperature adjustment and control is high; natural gas is used as the fuel; the partial temperature difference inside the kiln is small; the sintering curve of a product is stable.

The invention relates to the technical field of power equipment, in particular to a spray nozzle and a gas turbine with the same. The spray nozzle comprises a central body, an annular wall and a cyclone device. Premixed fuel channels and a diffused fuel channel which are independent from one another are respectively arranged on the central body; fuel can be respectively sprayed to a central body mixing channel and a peripheral mixing channel by the premixed fuel channels, so that fuel and air mixtures can be formed; fuel can be directly sprayed into the fuel and air mixtures at positions, which are close to the end walls of the central body, by the diffused fuel channel, the fuel and air mixtures are sprayed out of the central body mixing channel, partial premixed combustion flame can be ultimately formed in the center of an outlet of the spray nozzle, the fuel and air mixtures which are sprayed out of the peripheral mixing channel can be ignited, and peripheral premixed combustion flame can be formed. The spray nozzle and the gas turbine have the advantages that the flame stability and the combustion efficiency of the spray nozzle under low-load conditions can be greatly improved under the effect of the partial premixed combustion flame in the center of the outlet of the spray nozzle, and effects of facilitating structure machining and maintaining can be realized.