CN100395484C - Ignition smooth combustion apparatus based on local smooth-combustion back-flow region - Google Patents
Ignition smooth combustion apparatus based on local smooth-combustion back-flow region Download PDFInfo
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- CN100395484C CN100395484C CNB2006100873889A CN200610087388A CN100395484C CN 100395484 C CN100395484 C CN 100395484C CN B2006100873889 A CNB2006100873889 A CN B2006100873889A CN 200610087388 A CN200610087388 A CN 200610087388A CN 100395484 C CN100395484 C CN 100395484C
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Abstract
The present invention discloses an ignition stable burning device based on a local stable burning back flow region. An ignition stable burning jet is arranged on a primary wind pulverized coal jet of a burner, the inlet end of the ignition stable burning jet is connected with a heat source medium source through a control pipeline, and the outlet end of the ignition stable burning jet is an outlet of heat source media and is positioned in a stable burning back flow region of the primary wind pulverized coal jet of the burner. Jets of the burner do not need to be replaced, micro oil, micro gas or oil-free ignition stable burning technical improvements can be realized with low technical risks, and the primary wind pulverized coal jet of the burner directly becomes an ignition burner and a main burner. The present invention has the advantages of simple structure, low cost, arbitrary multi-layer arrangement, wide adaptability to coal varieties, long service life and high reliability, greatly decreases running power consumption and running maintenance cost, can also effectively prevent the serious safety accident of boiler extinguishment caused by coal quality fluctuations, is favorable for industrial furnaces and power station pulverized coal fired boilers to achieve fuel saving technical improvement with low cost, low investment and low risks, and realizes the aim of greatly saving fuel.
Description
Technical field
The present invention relates to a kind of station boiler, the industrial furnace equal energy source utilizes in the process, to igniting and the steady combustion spout device that coal dust carries out ignition, especially by the part of smooth-combustion back-flow region, realizes the device of coal dust reliable ignition and steady combustion.
Background technology
At present, the coal burner that is used for industrial furnace, generating plant pulverized coal boiler, usually all use oil gun, by high-temperature flue gas entrainment, wind coal dust be heated to ignition point and light a fire, under the state of a whole wind coal powder ignition, and then in the smooth-combustion back-flow region of a wind coal dust of burner spout, reflux by high-temperature flue gas, heat a near coal dust of wind snout and realize steady combustion, like this, oil consumption is higher when boiler start/ stop or underload;
Perhaps as vaporization small oil gun, gas gun, plasma non-oil ignition surely fire, the steady combustion of high temperature air non-oil ignition etc., catch fire and realize igniting and steady combustion by heating a certain amount of wind coal dust, a classification, so, need to change a wind coal dust of burner spout, owing to involve design, the test in complicated aerodynamic field, temperature field, varying and dynamic change of actual coal ature of coal, the type of furnace, the working of a furnace, occur easily in the application process theoretical with specifically put into practice inconsistently, development and Design difficulty large period is long, investment and technical risk are bigger; No matter be to adopt oil or gas or electricity to heat ignition smooth combustion, required oil consumption or gas consumption or power consumption are still higher;
And plasma non-oil ignition surely fires, the high temperature air non-oil ignition surely fires, because power is big, price is relatively costly, only can arrange use by individual layer, and a wind coal dust of all the other burners spout still need be thrown oily ignition smooth combustion.Or need special process hand-manipulated to realize non-oil ignition, and reliability is difficult to obtain basic assurance, and technical difficulty is bigger.
And, the steady combustion of a wind coal dust of burner spout, depend critically upon coal characteristic, aerodynamic field, space temperature field parameter, lack directly effective control measures, in case operational factor departs from, promptly cause the smooth-combustion back-flow region fire extinguishing and then make whole wind coal dust fire extinguishing, so have to start big oil gun and carry out ignition smooth combustion again, under present fuel oil, the expensive situation of combustion gas, directly influence the economy of industrial furnace, generating plant pulverized coal boiler operation.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, and a kind of device by local smooth-combustion back-flow region, realization burner wind coal dust spout reliable ignition and steady combustion is provided.It has avoided effectively that vaporization small oil gun, gas gun, plasma non-oil ignition surely fire, the steady combustion of high temperature air non-oil ignition etc., replacing, investment and the technical risk that need carry out a wind coal dust of burner spout are bigger, oil consumption or gas consumption or power consumption are still higher, plasma non-oil ignition surely fires, the high temperature air non-oil ignition surely fires, only can arrange use by individual layer, a wind coal dust of all the other burners spout still need be thrown deficiencies such as oily ignition smooth combustion or special manual operations.Simple in structure, the small investment risk is little, coal adaptability is wide, the life-span is long, reliability is high, multilayer is arranged arbitrarily, and has significantly reduced the energy consumption and the operation and maintenance cost of operation.And, prevent that effectively the ature of coal fluctuation from causing the serious accident of boiler extinguishment.Help industrial furnace, generating plant pulverized coal boiler, low-cost, low investment, low-risk are finished the fuel-saving technique transformation, realize fuel-economizing target significantly.
For addressing the above problem, the present invention adopts following technical scheme:
A kind of ignition smooth combustion apparatus of the present invention based on local smooth-combustion back-flow region, comprise ignition smooth combustion spout and a wind coal dust of burner spout, be provided with smooth-combustion back-flow region in a wind coal dust of the burner spout, described ignition smooth combustion spout is installed on a wind coal dust of the burner spout, the entrance point of ignition smooth combustion spout is connected with the thermal source medium source by control piper, the port of export of ignition smooth combustion spout is the outlet of thermal source medium, be positioned at the smooth-combustion back-flow region of a wind coal dust of burner spout, wind coal dust of burner spout behind the installation ignition smooth combustion spout directly becomes start-up burner and main burner.
The perforate axle center of thermal source media outlet of the present invention, with angle＞10 degree in the axle center of a wind coal dust of burner spout, and the dense phase pulverized coal following current near the following current district of the smooth-combustion back-flow region of thermal source medium and a wind coal dust of burner spout is met.
When thermal source medium of the present invention is fuel oil or combustion gas, described ignition smooth combustion spout is made of fuel oil or fuel gas inlet, fuel oil or gas gun and igniter, fuel oil or fuel gas inlet link to each other with fuel oil or fuel gas source by control piper, fuel oil or fuel gas inlet are connected with fuel oil or gas gun and communicate, fuel oil or gas gun in the vertical direction have perforate up or down, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree; Igniter igniter head is positioned near the position of fuel oil or gas gun spout, and during operation, oil combustion gun jet or gas gun puff prot and igniter are positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout.Oil combustion gun or gas gun and igniter can be withdrawed from by telescoping mechanism during stoppage in transit.This ignition smooth combustion spout is flexible decline oil or emblem gas ignition smooth combustion mode.
When the underload that station boiler, industrial furnace starting ignition, peak regulation are put out a fire easily, in case the corresponding flame monitor of installing of a wind coal dust of each burner spout detects the flame deepening, flame intensity dies down or flame intensity is lower than certain numerical value, startup oil gun or gas gun also lighted a fire, the condition of high temperature that can keep smooth-combustion back-flow region realizes the reliable steady combustion of a wind coal dust of this burner spout flame; Effectively avoid the fire extinguishing of a wind coal dust of burner spout, or throw big oil gun and surely fire, effectively prevent because the ature of coal fluctuation causes the serious accident of boiler extinguishment.And the heat radiation of smooth-combustion back-flow region can be too not fast, can take turns intermittently or continuation mode throwing oil or dosing gas.
The present technique mode is as station boiler, industrial furnace ignition smooth combustion apparatus, when station boiler, industrial furnace igniting, after purging through security of operation, each ignition smooth combustion spout starts oil gun or gas gun and igniting, by the direct firing coal-dust of smooth-combustion back-flow region, carry out operating point and fight and realize steady combustion; Station boiler, when industrial furnace rises to certain load, the flame monitor that a wind coal dust of each burner spout is installed detects that corresponding flame is bright, flame intensity is enough strong, during above certain numerical value, this ignition smooth combustion spout, change adjustment running status successively: continuation mode is thrown oil or combustion gas, continuation mode throws oil or combustion gas also reduces throwing oil or gas quantity, intermittent mode is thrown oil or combustion gas, stopped to throw oil or combustion gas in turn; In case each flame monitor detects that corresponding flame deepening, flame intensity die down or flame intensity when being lower than certain numerical value, corresponding ignition smooth combustion spout, then immediately successively change adjust running status: stop to throw oil or combustion gas, in turn intermittent mode throw oil or combustion gas, continuation mode throw oil or combustion gas and strengthen throw oil or gas quantity, continuation mode is thrown oil or combustion gas.When station boiler, industrial furnace rise to the load that is difficult for fire extinguishing, then stop to throw oil or combustion gas.Like this, both guaranteed the safe and reliable of igniting and steady combustion, need not change a wind coal dust of burner spout again by smooth-combustion back-flow region.
Flexible oil or the little gas ignition smooth combustion mode of declining of the present invention, startup oil gun or gas gun also lighted a fire, the high-temperature flue gas of burning, promptly with smooth-combustion back-flow region near the coal dust following current in local following current district meet, continue heating and make its catching fire, and make smooth-combustion back-flow region remain the condition of high temperature, and then add a wind coal dust of the whole spout of thermal ignition rapidly, realize the reliable ignition and the steady combustion of a wind coal dust of this burner spout.
Perhaps when thermal source medium of the present invention is fuel oil or combustion gas, described ignition smooth combustion spout is by fuel oil or fuel gas buring gas approach, air outlet, atomizing element or spout, igniter, precombustion chamber, combustion product gases passage and combustion product gases export mixes, igniter head of igniter is installed in the precombustion chamber, the combustion product gases import of fuel oil or combustion gas is connected with precombustion chamber through atomizing element or spout and communicates, separate by the individual layer shell, become the combustion product gases passage in the pipe, air outlet communicates with precombustion chamber, precombustion chamber, the combustion product gases passage, combustion product gases outlet connection successively communicates, air outlet connects secondary wind or other cooling air, in precombustion chamber and the combustion product gases passage or be provided with insulating outward, the combustion product gases outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, have on the vertical direction upwards, or downwards, or the downward perforate that makes progress arranged simultaneously, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, the combustion product gases import of fuel oil or combustion gas links to each other with the combustion product gases source of fuel oil or combustion gas by control piper.This ignition smooth combustion spout, for pre-burning fixedly decline oil or little gas ignition smooth combustion mode.
Pre-burning of the present invention fixedly decline oil or little gas ignition smooth combustion mode, start the air outlet air-supply, open oil circuit or combustion gas and in precombustion chamber, light a fire, the high-temperature flue gas of burning is promptly sprayed by perforate through the combustion product gases passage, meet with near the coal dust following current in the local following current district smooth-combustion back-flow region, continue heating or further burn and make the coal dust catching fire, and make smooth-combustion back-flow region remain the condition of high temperature, and then add a wind coal dust of the whole spout of thermal ignition rapidly, realize the reliable ignition and the steady combustion of a wind coal dust of this burner spout.
When the underload that station boiler, industrial furnace starting ignition, peak regulation are put out a fire easily, in case the corresponding flame monitor of installing of a wind coal dust of each burner spout detects the flame deepening, flame intensity dies down or flame intensity is lower than certain numerical value, start the air outlet air-supply, open oil circuit or combustion gas and in precombustion chamber, light a fire, the condition of high temperature that can keep smooth-combustion back-flow region realizes the reliable steady combustion of a wind coal dust of this burner spout flame; Effectively avoid the fire extinguishing of a wind coal dust of burner spout, or throw big oil gun and surely fire, effectively prevent because the ature of coal fluctuation causes the serious accident of boiler extinguishment.And the heat radiation of smooth-combustion back-flow region can be too not fast, can take turns intermittently or continuation mode throwing oil or dosing gas.
The present technique mode is as station boiler, industrial furnace ignition smooth combustion apparatus, when station boiler, industrial furnace igniting, after purging through security of operation, each ignition smooth combustion spout starts oil circuit or combustion gas road and igniting in precombustion chamber, by the direct firing coal-dust of smooth-combustion back-flow region, carry out operating point and fight and realize steady combustion; Station boiler, when industrial furnace rises to certain load, the flame monitor that a wind coal dust of each burner spout is installed detects that corresponding flame is bright, flame intensity is enough strong, during above certain numerical value, this ignition smooth combustion spout, change adjustment running status successively: continuation mode is thrown oil or combustion gas, continuation mode throws oil or combustion gas also reduces throwing oil or gas quantity, intermittent mode is thrown oil or combustion gas, stopped to throw oil or combustion gas in turn; In case each flame monitor detects that corresponding flame deepening, flame intensity die down or flame intensity when being lower than certain numerical value, corresponding ignition smooth combustion spout, then immediately successively change adjust running status: stop to throw oil or combustion gas, in turn intermittent mode throw oil or combustion gas, continuation mode throw oil or combustion gas and strengthen throw oil or gas quantity, continuation mode is thrown oil or combustion gas.When station boiler, industrial furnace rise to the load that is difficult for fire extinguishing, then stop to throw oil or combustion gas.Like this, both guaranteed the safe and reliable of igniting and steady combustion, need not change a wind coal dust of burner spout again by smooth-combustion back-flow region.
Again or, when thermal source medium of the present invention is hot oxygen rich gas, described ignition smooth combustion spout, by the oxygen rich air import, the oxygen rich air passage, heating element heater, the oxygen rich air export mixes, separate by single hull, become the oxygen rich air passage, heating element heater is positioned at the oxygen rich air passage of oxygen rich air entrance point, heating element heater is electrically connected with power supply or frequency converter, heating element heater is the ceramic heat rod, or intense radiation heating tube, or high frequency low-temperature plasma heating tube or heating using microwave pipe, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, the oxygen rich air outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, in the vertical direction has upwards, downwards, or the downward perforate that makes progress arranged simultaneously, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, the oxygen rich air import is connected with source of oxygen by control piper.This ignition smooth combustion spout is for the oxygen enrichment non-oil ignition surely fires mode.
Oxygen enrichment non-oil ignition of the present invention surely fires mode, open heating element heater, open the oxygen rich air pipeline, high hot oxygen rich gas promptly with smooth-combustion back-flow region near the coal dust following current in local following current district meet, continue heating and make its catching fire,, and make smooth-combustion back-flow region remain the condition of high temperature because oxygen rich gas concentration height, reaction is fast, ignition temperature is high, and then add a wind coal dust of the whole spout of thermal ignition rapidly, realize the reliable ignition and the steady combustion of a wind coal dust of this burner spout.
When the underload that station boiler, industrial furnace starting ignition, peak regulation are put out a fire easily, in case the corresponding flame monitor of installing of a wind coal dust of each burner spout detects the flame deepening, flame intensity dies down or flame intensity is lower than certain numerical value, open the oxygen rich air pipeline, or open heating element heater, the condition of high temperature that can keep smooth-combustion back-flow region realizes the reliable steady combustion of a wind coal dust of this burner spout flame; Effectively avoid the fire extinguishing of a wind coal dust of burner spout, or throw big oil gun and surely fire, effectively prevent because the ature of coal fluctuation causes the serious accident of boiler extinguishment.And the heat radiation of smooth-combustion back-flow region can be too not fast, can take turns intermittently or continuation mode is thrown oxygen rich air or opened heating element heater.
The present technique mode is as station boiler, industrial furnace ignition smooth combustion apparatus, when station boiler, industrial furnace igniting, after purging through security of operation, each ignition smooth combustion spout or open heating element heater and throw oxygen rich air, by the direct firing coal-dust of smooth-combustion back-flow region, carry out operating point and fight and realize steady combustion; Station boiler, when industrial furnace rises to certain load, it is bright that the flame monitor that a wind coal dust of each burner spout is installed detects corresponding flame, flame intensity is enough strong, when surpassing certain numerical value, this ignition smooth combustion spout, running status is adjusted in change successively: continuation mode is thrown oxygen rich air and is opened heating, continuation mode is thrown oxygen rich air and is opened heating and reduce heating power, continuation mode is thrown oxygen rich air intermittently heating in turn, continuation mode is thrown oxygen rich air and is stopped heating, continuation mode is thrown oxygen rich air and is stopped heating and reduce throwing oxygen enrichment tolerance, intermittent mode throwing oxygen rich air stops heating in turn, stop to throw oxygen rich air and stop heating; In case each flame monitor detects that corresponding flame deepening, flame intensity die down or flame intensity when being lower than certain numerical value, corresponding ignition smooth combustion spout, then immediately successively change adjust running status: stop to throw oxygen rich air stop heating, in turn intermittent mode throw oxygen rich air stop heating, continuation mode throw oxygen rich air stop heating and strengthen throw oxygen enrichment tolerance, continuation mode throw oxygen rich air stop heating, continuation mode throw oxygen rich air in turn intermittently heating, continuation mode throw oxygen rich air and strengthen heating power, continuation mode is thrown oxygen rich air and is opened heating.When station boiler, industrial furnace rise to the load that is difficult for fire extinguishing, then stop to throw oxygen rich air and stop heating.Like this, both guaranteed the safe and reliable of igniting and steady combustion, need not change a wind coal dust of burner spout again by smooth-combustion back-flow region.
Perhaps, when thermal source medium of the present invention is fuel oil or combustion gas and oxygen rich gas, ignition smooth combustion spout of the present invention is by the oxygen rich air import, the oxygen rich air passage, the oxygen rich air outlet, fuel oil or fuel gas inlet, oil gun or gas gun, igniter constitutes, separate by single hull, become the oxygen rich air passage in the pipe, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, fuel oil or fuel gas inlet are connected with oil gun or gas gun and communicate, igniter igniter head is positioned near the position of oil gun or gas gun spout, and between oil gun or gas gun spout and oxygen rich air outlet, the oxygen rich air outlet, oil gun jet or gas gun puff prot during operation, igniter igniter head, be positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, the oxygen rich air outlet, oil gun jet or gas gun puff prot during operation, perforate is up or down arranged on the vertical direction, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, oil gun or gas gun and igniter can be withdrawed from by telescoping mechanism during stoppage in transit, fuel oil or fuel gas inlet link to each other with oil sources or fuel gas source by control piper, the oxygen rich air import is connected with source of oxygen by control piper, this ignition smooth combustion spout, oil or little gas ignition smooth combustion mode decline for oxygen enrichment is flexible.
Flexible oil or the little gas ignition smooth combustion mode of declining of oxygen enrichment of the present invention, open oil gun or gas gun and light a fire, open the oxygen rich air pipeline, high-temperature flue gas, the oxygen rich air of burning can be met with near the coal dust following current in the local following current district smooth-combustion back-flow region, continue heating and make its catching fire, because oxygen rich gas concentration height, reaction is fast, ignition temperature is high, and make smooth-combustion back-flow region remain the condition of high temperature, and then add a wind coal dust of the whole spout of thermal ignition rapidly, realize the reliable ignition and the steady combustion of a wind coal dust of this burner spout.
When the underload that station boiler, industrial furnace starting ignition, peak regulation are put out a fire easily, in case the corresponding flame monitor of installing of a wind coal dust of each burner spout detects the flame deepening, flame intensity dies down or flame intensity is lower than certain numerical value, open the oxygen rich air pipeline, perhaps open oil gun or gas gun and light a fire, the condition of high temperature that can keep smooth-combustion back-flow region realizes the reliable steady combustion of a wind coal dust of this burner spout flame; Effectively avoid the fire extinguishing of a wind coal dust of burner spout, or throw big oil gun and surely fire, effectively prevent because the ature of coal fluctuation causes the serious accident of boiler extinguishment.And the heat radiation of smooth-combustion back-flow region can be too not fast, can take turns intermittently or continuation mode throwing oxygen rich air or throwing oil gun or gas gun.
The present technique mode is as station boiler, industrial furnace ignition smooth combustion apparatus, when station boiler, industrial furnace igniting, after purging through security of operation, each ignition smooth combustion spout is thrown oil or combustion gas and igniting, throw oxygen rich air, by the direct firing coal-dust of smooth-combustion back-flow region, carry out operating point and fight and realize steady combustion; Station boiler, when industrial furnace rises to certain load, it is bright that the flame monitor that a wind coal dust of each burner spout is installed detects corresponding flame, flame intensity is enough strong, when surpassing certain numerical value, this ignition smooth combustion spout, the method for operation is adjusted in change successively: throw oxygen rich air continuously and throw oil or combustion gas continuously, throwing oxygen rich air continuously throws oil or combustion gas continuously and reduces throwing oil or gas quantity, throw oxygen rich air continuously and intermittently throw oil or combustion gas in turn, throw oxygen rich air continuously and stop to throw oil or combustion gas, throwing oxygen rich air continuously stops to throw oil or combustion gas and reduces throwing oxygen enrichment tolerance, intermittently throwing oxygen rich air stops to throw oil or combustion gas in turn, stop oxygen rich air and stop to throw oil or combustion gas; In case each flame monitor detects that corresponding flame deepening, flame intensity die down or flame intensity when being lower than certain numerical value, corresponding ignition smooth combustion spout is looked the flame situation and is changed the adjustment method of operation successively: stops oxygen rich air and stop to throw oil or combustion gas, intermittently throw oxygen rich air in turn and stop to throw oil or combustion gas, throw oxygen rich air continuously and stop to throw oil or combustion gas and strengthen and throw oxygen enrichment tolerance, throw oxygen rich air continuously and stop to throw oil or combustion gas, throw oxygen rich air continuously and intermittently throw oil or combustion gas in turn, throw oxygen rich air continuously and throw oil or combustion gas continuously and strengthen and throw oil or gas quantity.Throw oxygen rich air continuously and throw oil or combustion gas continuously.When station boiler, industrial furnace rise to the load that is difficult for fire extinguishing, then stop to throw oxygen rich air, stop to throw oil or combustion gas.Like this, both guaranteed the safe and reliable of igniting and steady combustion, need not change a wind coal dust of burner spout again by smooth-combustion back-flow region.
Or when thermal source medium of the present invention be fuel oil or combustion gas and oxygen rich gas, described ignition smooth combustion spout, by the oxygen rich air import, the oxygen rich air passage, the oxygen rich air outlet, fuel oil or fuel gas inlet, atomizing element or spout, air inlet, precombustion chamber, igniter, the combustion product gases passage, the combustion product gases export mixes, separate by two-layer housing, in become the combustion product gases passage, become the oxygen rich air passage outward, realize the heat insulation processing of burning flue by the oxygen rich air passage, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, igniter head of igniter is installed in the precombustion chamber, fuel inlet is through the atomizing element, or fuel gas inlet is through the combustion gas spout, be connected with precombustion chamber and communicate, the atomizing element is fuel jet or effervescent atomization element, air outlet and precombustion chamber, the combustion product gases passage, combustion product gases outlet connection successively communicates, air outlet connects secondary wind or other cooling air, in the precombustion chamber or be provided with insulating outward, the oxygen rich air outlet, the combustion product gases outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, in the vertical direction has up or down or has simultaneously the downward perforate that makes progress, and the angle in axle center and a wind coal dust of burner spout axle center is＞10 degree, the oxygen rich air import is connected with source of oxygen by control piper, fuel oil or fuel gas inlet link to each other with oil sources or fuel gas source by control piper, this ignition smooth combustion spout, for oxygen enrichment pre-burning fixedly decline oil or little gas ignition smooth combustion mode.
Oxygen enrichment pre-burning of the present invention fixedly decline oil or little gas ignition smooth combustion mode, start the air outlet air-supply, open oil circuit or combustion gas and in precombustion chamber, light a fire, open the oxygen rich air pipeline, the high-temperature flue gas of burning is promptly sprayed by perforate through the combustion product gases passage, oxygen rich air is promptly sprayed by perforate through the oxygen rich air passage, meet with near the coal dust following current in the local following current district smooth-combustion back-flow region, continue heating, or further burn and make the coal dust catching fire, because oxygen rich gas concentration height, reaction is fast, the ignition temperature height, and make smooth-combustion back-flow region remain the condition of high temperature, and then add a wind coal dust of the whole spout of thermal ignition rapidly, realize the reliable ignition and the steady combustion of a wind coal dust of this burner spout.
When the underload that station boiler, industrial furnace starting ignition, peak regulation are put out a fire easily, in case the corresponding flame monitor of installing of a wind coal dust of each burner spout detects the flame deepening, flame intensity dies down or flame intensity is lower than certain numerical value, open the oxygen rich air pipeline, perhaps open oil gun or gas gun and light a fire, the condition of high temperature that can keep smooth-combustion back-flow region realizes the reliable steady combustion of a wind coal dust of this burner spout flame; Effectively avoid the fire extinguishing of a wind coal dust of burner spout, or throw big oil gun and surely fire, effectively prevent because the ature of coal fluctuation causes the serious accident of boiler extinguishment.And the heat radiation of smooth-combustion back-flow region can be too not fast, can take turns intermittently or continuation mode throwing oxygen rich air or oil gun or gas gun.
The present technique mode is as station boiler, industrial furnace ignition smooth combustion apparatus, when station boiler, industrial furnace igniting, after purging through security of operation, each ignition smooth combustion spout is thrown oil or combustion gas and igniting, throw oxygen rich air, by the direct firing coal-dust of smooth-combustion back-flow region, carry out operating point and fight and realize steady combustion; Station boiler, when industrial furnace rises to certain load, it is bright that the flame monitor that a wind coal dust of each burner spout is installed detects corresponding flame, flame intensity is enough strong, when surpassing certain numerical value, this ignition smooth combustion spout, the method for operation is adjusted in change successively: throw oxygen rich air continuously and throw oil or combustion gas continuously, throwing oxygen rich air continuously throws oil or combustion gas continuously and reduces throwing oil or gas quantity, throw oxygen rich air continuously and intermittently throw oil or combustion gas in turn, throw oxygen rich air continuously and stop to throw oil or combustion gas, throwing oxygen rich air continuously stops to throw oil or combustion gas and reduces throwing oxygen enrichment tolerance, intermittently throwing oxygen rich air stops to throw oil or combustion gas in turn, stop oxygen rich air and stop to throw oil or combustion gas; In case each flame monitor detects corresponding flame deepening, flame intensity dies down, or flame intensity is when being lower than certain numerical value, corresponding ignition smooth combustion spout is looked the flame situation and is changed the adjustment method of operation successively: stops oxygen rich air and stop to throw oil or combustion gas, intermittently throwing oxygen rich air stops to throw oil or combustion gas in turn, throwing oxygen rich air continuously stops to throw oil or combustion gas and strengthens throwing oxygen enrichment tolerance, throw oxygen rich air continuously and stop to throw oil or combustion gas, throw oxygen rich air continuously and intermittently throw oil or combustion gas in turn, throwing oxygen rich air continuously throws oil or combustion gas continuously and strengthens throwing oil or gas quantity, throw oxygen rich air continuously and throw oil or combustion gas continuously.When station boiler, industrial furnace rise to the load that is difficult for fire extinguishing, then stop to throw oxygen rich air and stop to throw oil or combustion gas.Like this, both guaranteed the safe and reliable of igniting and steady combustion, need not change a wind coal dust of burner spout again by smooth-combustion back-flow region.
Coal adaptability of the present invention is wide, energy consumption is low is, with electricity or little oil or little gas mode, dynamically adjust heating power, heating curve, or use oxygen rich gas, make near an amount of coal dust trouble-free burning heat release in the local following current district of a wind coal dust of burner spout smooth-combustion back-flow region, guarantee that smooth-combustion back-flow region remains high hot state, and then realize the reliable ignition of each coal, steady combustion.
Life-span of the present invention is long, reliability is high is, installs no scaling loss and easily worn part, and can install and use cheap standby ignition smooth combustion spout, thereby system can move reliably and with long-term in a wind coal dust of burner spout.
Be the safe operation of assurance device, the reply associated pipe is carried out the safety purging and security procedure stops; In remaining in operation as station boiler, industrial furnace, need there be certain air quantity that the ignition smooth combustion spout is purged cooling, prevents coking and slagging.
The invention has the beneficial effects as follows, an amount of coal dust by near the following current district a wind coal dust of the burner for heating spout smooth-combustion back-flow region makes it high-temp combustion, the power of enough lighting a fire reliably is provided, keep the smooth-combustion back-flow region condition of high temperature, perhaps combustion-supporting with oxygen rich air, realize the reliable ignition and the steady combustion of a wind coal dust of this burner spout flame; But not provide with electrical power or fuel oil or combustion gas mode fully, so energy consumption is lower; Technological transformation need not to change a wind coal dust of burner spout, and technical risk is lower, and a wind coal dust of the burner spout after the technological transformation directly becomes start-up burner and main burner.Spout does not have the burning problems of parts, no costliness and the not good enough large power supply of fault rate, and coal adaptability is wide, and the life-span is long, reliability is high, has significantly reduced the power consumption and the operation and maintenance cost of operation.And, prevent that effectively the ature of coal fluctuation from causing the serious accident of boiler extinguishment.Simple in structure, small investment, but the configuration of a wind coal dust of multilayer burner spout.Under current crude resources situation in short supply, expensive, help station boiler, industrial furnace and change the mode that former coal burner is thrown oil drop fire, steady combustion in a large number, low-cost, low investment, low-risk are finished the fuel-saving technique transformation, realize fuel-economizing target significantly.
Description of drawings
Fig. 1 is the embodiment of the invention 1,2,3 described structural representations.
Fig. 2 is the embodiment of the invention 4,5 described structural representations.
Fig. 3-1,3-2 are the embodiment of the invention 1 described flexible oil or the little gas ignition smooth combustion mode ignition smooth combustion spout structure schematic diagram of declining.
Fig. 4-1,4-2 be the embodiment of the invention 2 described pre-burning fixedly decline oil or little gas ignition smooth combustion mode ignition smooth combustion spout structure schematic diagram.
Fig. 5-1,5-2 are that the embodiment of the invention 3 described oxygen enrichment non-oil ignitions surely fire mode ignition smooth combustion spout structure schematic diagram.
Fig. 6-1,6-2 are flexible oil or the little gas ignition smooth combustion mode ignition smooth combustion spout structure schematic diagrames of declining of the embodiment of the invention 4 described oxygen enrichments.
Fig. 7-1,7-2 be the embodiment of the invention 5 described oxygen enrichment pre-burning fixedly decline oil or little gas ignition smooth combustion mode ignition smooth combustion spout structure schematic diagram.
The specific embodiment
Embodiment 1
A kind of ignition smooth combustion apparatus of the present invention based on local smooth-combustion back-flow region, comprise ignition smooth combustion spout and a wind coal dust of burner spout, be provided with smooth-combustion back-flow region in a wind coal dust of the burner spout, described ignition smooth combustion spout is installed on a wind coal dust of the burner spout.As shown in Figure 1, the entrance point of ignition smooth combustion spout 1 is connected with fuel oil or fuel gas source 3 by control piper 2, the port of export of ignition smooth combustion spout is the outlet of fuel oil or combustion gas, it is positioned at the smooth-combustion back-flow region of a wind coal dust of burner spout, wind coal dust of burner spout behind the installation ignition smooth combustion spout directly becomes start-up burner and main burner.Like this, need not to change a wind coal dust of burner spout, can realize little oil or the technological transformation of little gas ignition smooth combustion in low technical risk ground, make burner nozzle directly become start-up burner and main burner.
The perforate axle center of fuel oil or gas outlet, with angle＞10 degree in the axle center of a wind coal dust of burner spout, and the dense phase pulverized coal following current near the following current district of the smooth-combustion back-flow region of fuel oil or combustion gas and a wind coal dust of burner spout is met.
Shown in Fig. 3-1,3-2, described ignition smooth combustion spout is made of fuel oil or fuel gas inlet 1-1-1, fuel oil or gas gun 1-1-2 and igniter 1-1-3, fuel oil or fuel gas inlet link to each other with fuel oil or fuel gas source by control piper, fuel oil or fuel gas inlet are connected with fuel oil or gas gun and communicate, fuel oil or gas gun in the vertical direction have perforate 1-1-4 up or down, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree; Igniter igniter head 1-1-5 is positioned near the position of fuel oil or gas gun spout, and during operation, oil combustion gun jet or gas gun puff prot and igniter are positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout.Oil combustion gun or gas gun and igniter can be withdrawed from by telescoping mechanism during stoppage in transit.This ignition smooth combustion spout is flexible oil or the little gas ignition smooth combustion mode of declining.
A kind of ignition smooth combustion apparatus of the present invention based on local smooth-combustion back-flow region, comprise ignition smooth combustion spout and a wind coal dust of burner spout, be provided with smooth-combustion back-flow region in a wind coal dust of the burner spout, described ignition smooth combustion spout is installed on a wind coal dust of the burner spout, as shown in Figure 1, the entrance point of ignition smooth combustion spout 1 is connected with fuel oil or fuel gas source 3 by control piper 2, the port of export of ignition smooth combustion spout is the outlet of fuel oil or fuel gas buring flue gas, it is positioned at the smooth-combustion back-flow region of a wind coal dust of burner spout, wind coal dust of burner spout behind the installation ignition smooth combustion spout directly becomes start-up burner and main burner.Like this, need not to change a wind coal dust of burner spout, can realize little oil or the technological transformation of little gas ignition smooth combustion in low technical risk ground, make burner nozzle directly become start-up burner and main burner.
The perforate axle center of the combustion product gases outlet of fuel oil or combustion gas, with angle＞10 degree in the axle center of a wind coal dust of burner spout, and the dense phase pulverized coal following current near the following current district of the smooth-combustion back-flow region of fuel oil or fuel gas buring flue gas and a wind coal dust of burner spout is met.
Shown in Fig. 4-1,4-2, ignition smooth combustion spout of the present invention is made of fuel oil or fuel gas inlet 1-2-1, air outlet 1-2-2, atomizing element or spout 1-2-3, igniter 1-2-4, precombustion chamber 1-2-5, combustion product gases passage 1-2-6 and combustion product gases outlet 1-2-7, and igniter head of igniter is installed in the precombustion chamber.Fuel inlet is through the atomizing element, or fuel gas inlet is through the combustion gas spout, is connected with precombustion chamber to communicate.Separate by the individual layer shell, become the combustion product gases passage in the pipe, air outlet and precombustion chamber, the combustion product gases passage, combustion product gases outlet connection successively communicates, air outlet connects secondary wind or other cooling air, in precombustion chamber and the combustion product gases passage or be provided with insulating 1-2-8 outward, the combustion product gases outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, have on the vertical direction upwards, or downwards, or the perforate 1-2-9 that makes progress downward arranged simultaneously, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, fuel oil or fuel gas inlet link to each other with fuel oil or fuel gas source by control piper.This ignition smooth combustion spout, for pre-burning fixedly decline oil or little gas ignition smooth combustion mode.
A kind of ignition smooth combustion apparatus of the present invention based on local smooth-combustion back-flow region, comprise ignition smooth combustion spout and a wind coal dust of burner spout, be provided with smooth-combustion back-flow region in a wind coal dust of the burner spout, described ignition smooth combustion spout is installed on a wind coal dust of the burner spout, as shown in Figure 1, the entrance point of ignition smooth combustion spout 1 is connected with oxygen enrichment source of the gas 3 by control piper 2, the port of export of ignition smooth combustion spout is the outlet of oxygen rich air, it is positioned at the smooth-combustion back-flow region of a wind coal dust of burner spout, wind coal dust of burner spout behind the installation ignition smooth combustion spout directly becomes start-up burner and main burner.Like this, need not to change a wind coal dust of burner spout, can realize that non-oil ignition surely fires technological transformation in low technical risk ground, make burner nozzle directly become start-up burner and main burner.
The perforate axle center of oxygen rich air outlet, with angle＞10 degree in the axle center of a wind coal dust of burner spout, and the dense phase pulverized coal following current near the following current district of the smooth-combustion back-flow region of oxygen rich air and a wind coal dust of burner spout is met.
As Fig. 5-1, shown in the 5-2, described ignition smooth combustion spout, by oxygen rich air import 1-3-1, oxygen rich air passage 1-3-2, heating element heater 1-3-3, oxygen rich air outlet 1-3-4 constitutes, separate by the individual layer shell, become the oxygen rich air passage in the pipe, heating element heater is positioned at the oxygen rich air passage of oxygen rich air entrance point, heating element heater is electrically connected with power supply or frequency converter, heating element heater is the ceramic heat rod, or intense radiation heating tube, or high frequency low-temperature plasma heating tube or heating using microwave pipe, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, the oxygen rich air outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, in the vertical direction has upwards, downwards, or the perforate 1-3-5 that makes progress downward arranged simultaneously, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, the oxygen rich air import is connected with source of oxygen by control piper.This ignition smooth combustion spout is for the oxygen enrichment non-oil ignition surely fires mode.
A kind of ignition smooth combustion apparatus of the present invention based on local smooth-combustion back-flow region, comprise ignition smooth combustion spout and a wind coal dust of burner spout, be provided with smooth-combustion back-flow region in a wind coal dust of the burner spout, described ignition smooth combustion spout is installed on a wind coal dust of the burner spout, as shown in Figure 2, the entrance point of ignition smooth combustion spout 1 is by control piper 2-1,2-2 and fuel oil or fuel gas source 3-1, source of oxygen 3-2 connects, the port of export of ignition smooth combustion spout is fuel oil or combustion gas, the outlet of oxygen rich air, it is positioned at the smooth-combustion back-flow region of a wind coal dust of burner spout, wind coal dust of burner spout behind the installation ignition smooth combustion spout directly becomes start-up burner and main burner.Like this, need not to change a wind coal dust of burner spout, can realize little oil, the technological transformation of little gas ignition smooth combustion in low technical risk ground, make burner nozzle directly become start-up burner and main burner.
The perforate axle center of fuel oil or gas outlet, with angle＞10 degree in the axle center of a wind coal dust of burner spout, and the dense phase pulverized coal following current near the following current district of the smooth-combustion back-flow region of fuel oil or combustion gas, oxygen rich air and a wind coal dust of burner spout is met.
As Fig. 6-1, shown in the 6-2, ignition smooth combustion spout of the present invention is by oxygen rich air import 1-4-1, oxygen rich air passage 1-4-2, oxygen rich air outlet 1-4-3, fuel oil or fuel gas inlet 1-4-4, oil combustion gun or gas gun 1-4-5, igniter 1-4-6 constitutes, separate by the individual layer shell, become the oxygen rich air passage in the pipe, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, fuel oil or fuel gas inlet are connected with oil gun or gas gun and communicate, igniter igniter head 1-4-7 is positioned near the position of oil gun or gas gun spout, and between oil gun or gas gun spout and oxygen rich air outlet.The oxygen rich air outlet, oil gun jet or gas gun puff prot during operation, igniter igniter head, be positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, the oxygen rich air outlet, oil gun jet or gas gun puff prot during operation, perforate 1-4-8 is up or down arranged on the vertical direction, 1-4-9, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, oil gun or gas gun and igniter can be withdrawed from by telescoping mechanism during stoppage in transit, fuel oil or fuel gas inlet link to each other with oil sources or fuel gas source by control piper, the oxygen rich air import is connected with source of oxygen by control piper, this ignition smooth combustion spout, oil or little gas ignition smooth combustion mode decline for oxygen enrichment is flexible.
Embodiment 5
A kind of ignition smooth combustion apparatus of the present invention based on local smooth-combustion back-flow region, comprise ignition smooth combustion spout and a wind coal dust of burner spout, be provided with smooth-combustion back-flow region in a wind coal dust of the burner spout, described ignition smooth combustion spout is installed on a wind coal dust of the burner spout, as shown in Figure 2, the entrance point of ignition smooth combustion spout 1 is by control piper 2-1,2-2 is connected with source of oxygen 3-2 with fuel oil or fuel gas source 3-1, the port of export of ignition smooth combustion spout is fuel oil or combustion gas, the oxygen rich air outlet, it is positioned at the smooth-combustion back-flow region of a wind coal dust of burner spout, wind coal dust of burner spout behind the installation ignition smooth combustion spout directly becomes start-up burner and main burner.Like this, need not to change a wind coal dust of burner spout, can realize little oil, the technological transformation of little gas ignition smooth combustion in low technical risk ground, make burner nozzle directly become start-up burner and main burner.
The perforate axle center of fuel oil or fuel gas buring exhanst gas outlet, with angle＞10 degree in the axle center of a wind coal dust of burner spout, and the dense phase pulverized coal following current near the following current district of the smooth-combustion back-flow region of fuel oil or combustion gas, oxygen rich air and a wind coal dust of burner spout is met.
As Fig. 7-1, shown in the 7-2, ignition smooth combustion spout of the present invention, by oxygen rich air import 1-5-1, oxygen rich air passage 1-5-2, oxygen rich air outlet 1-5-3, fuel oil or fuel gas inlet 1-5-4, atomizing element or spout 1-5-5, air inlet 1-5-6, precombustion chamber 1-5-7, igniter 1-5-8, combustion product gases passage 1-5-9, combustion product gases outlet 1-5-10 constitutes, separate by two-layer shell, in become the combustion product gases passage, become the oxygen rich air passage outward, realize the heat insulation of burning flue by the oxygen rich air passage, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, igniter head of igniter is installed in the precombustion chamber, fuel inlet is through the atomizing element, or fuel gas inlet is through the combustion gas spout, be connected with precombustion chamber and communicate, the atomizing element is fuel jet or effervescent atomization element, air outlet and precombustion chamber, the combustion product gases passage, combustion product gases outlet connection successively communicates, air outlet connects secondary wind or other cooling air, in the precombustion chamber or be provided with insulating 1-5-11 outward, the oxygen rich air outlet, the combustion product gases outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, in the vertical direction has up or down or has simultaneously the perforate 1-5-12 that makes progress downward, 1-5-13, and the angle in axle center and a wind coal dust of burner spout axle center is＞10 degree, the oxygen rich air import is connected with source of oxygen by control piper, fuel oil or fuel gas inlet link to each other with oil sources or fuel gas source by control piper, this ignition smooth combustion spout, for oxygen enrichment pre-burning fixedly decline oil or little gas ignition smooth combustion mode.
The present invention is not limited to above-mentioned preferred forms, and other any identical with the present invention or akin products that anyone draws under enlightenment of the present invention all drop within protection scope of the present invention.
Claims (6)
1. ignition smooth combustion apparatus based on local smooth-combustion back-flow region, comprise ignition smooth combustion spout and a wind coal dust of burner spout, be provided with smooth-combustion back-flow region in a wind coal dust of the burner spout, the ignition smooth combustion spout is installed on a wind coal dust of the burner spout, the entrance point of ignition smooth combustion spout is connected with the thermal source medium source by control piper, the port of export of ignition smooth combustion spout is the thermal source media outlet, it is characterized in that: described thermal source media outlet is positioned at the smooth-combustion back-flow region of a wind coal dust of burner spout, the perforate axle center of thermal source media outlet, angle＞10 degree with the axle center of a wind coal dust of burner spout, and near the dense phase pulverized coal following current the smooth-combustion back-flow region of thermal source medium and a wind coal dust of burner spout in the following current district is met, wind coal dust of burner spout behind the installation ignition smooth combustion spout directly becomes start-up burner and main burner.
2. the ignition smooth combustion apparatus based on local smooth-combustion back-flow region as claimed in claim 1, it is characterized in that: described thermal source medium is fuel oil or combustion gas, described ignition smooth combustion spout is made of fuel oil or fuel gas inlet, fuel oil or gas gun and igniter, fuel oil or fuel gas inlet link to each other with fuel oil or fuel gas source by control piper, fuel oil or fuel gas inlet are connected with fuel oil or gas gun and communicate, fuel oil or gas gun in the vertical direction have perforate up or down, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree; Igniter igniter head is positioned near the position of fuel oil or gas gun spout; During operation, oil combustion gun jet or gas gun puff prot and igniter are positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout; Oil combustion gun or gas gun and igniter can be withdrawed from by telescoping mechanism during stoppage in transit; This ignition smooth combustion spout is flexible oil or the little gas ignition smooth combustion mode of declining.
3. the ignition smooth combustion apparatus based on local smooth-combustion back-flow region as claimed in claim 1, it is characterized in that: described thermal source medium is fuel oil or combustion gas, described ignition smooth combustion spout is by fuel oil or fuel gas inlet, air outlet, atomizing element or spout, igniter, precombustion chamber, combustion product gases passage and combustion product gases export mixes, igniter head of igniter is installed in the precombustion chamber, fuel inlet is through the atomizing element, or fuel gas inlet is through spout, be connected with precombustion chamber and communicate, separate by the individual layer shell, become the combustion product gases passage in the pipe, air outlet communicates with precombustion chamber, precombustion chamber, the combustion product gases passage, combustion product gases outlet connection successively communicates, air outlet connects secondary wind or other cooling air, in precombustion chamber and the combustion product gases passage or be provided with insulating outward, the combustion product gases outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, have on the vertical direction upwards, or downwards, or the downward perforate that makes progress arranged simultaneously, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, fuel oil or fuel gas inlet link to each other with fuel oil or fuel gas source by control piper; This ignition smooth combustion spout, for pre-burning fixedly decline oil or little gas ignition smooth combustion mode.
4. the ignition smooth combustion apparatus based on local smooth-combustion back-flow region as claimed in claim 1, it is characterized in that: described thermal source medium is an oxygen rich gas, described ignition smooth combustion spout, by the oxygen rich air import, the oxygen rich air passage, heating element heater, the oxygen rich air export mixes, separate by the individual layer shell, become the oxygen rich air passage in the pipe, heating element heater is positioned at the oxygen rich air passage of oxygen rich air entrance point, heating element heater is electrically connected with power supply or frequency converter, heating element heater is the ceramic heat rod, or intense radiation heating tube, or high frequency low-temperature plasma heating tube or heating using microwave pipe, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, the oxygen rich air outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, in the vertical direction has upwards, downwards, or the downward perforate that makes progress arranged simultaneously, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, the oxygen rich air import is connected with source of oxygen by control piper; This ignition smooth combustion spout is that the oxygen enrichment non-oil ignition surely fires mode.
5. the ignition smooth combustion apparatus based on local smooth-combustion back-flow region as claimed in claim 1 is characterized in that: described thermal source medium is fuel oil or combustion gas and oxygen rich gas; Described ignition smooth combustion spout is by the oxygen rich air import, the oxygen rich air passage, the oxygen rich air outlet, fuel oil or fuel gas inlet, oil gun or gas gun, igniter constitutes, separate by the individual layer shell, become the oxygen rich air passage in the pipe, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, fuel oil or fuel gas inlet are connected with oil gun or gas gun and communicate, igniter igniter head is positioned near the position of oil gun or gas gun spout, and between oil gun or gas gun spout and oxygen rich air outlet, the oxygen rich air outlet, oil gun jet or gas gun puff prot during operation, igniter igniter head, be positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, the oxygen rich air outlet, oil gun jet or gas gun puff prot during operation, perforate is up or down arranged on the vertical direction, and the angle in axle center and a wind coal dust of burner spout axle center＞10 degree, oil gun or gas gun and igniter can be withdrawed from by telescoping mechanism during stoppage in transit, fuel oil or fuel gas inlet link to each other with oil sources or fuel gas source by control piper, the oxygen rich air import is connected with source of oxygen by control piper, this ignition smooth combustion spout, oil or little gas ignition smooth combustion mode decline for oxygen enrichment is flexible.
6. the ignition smooth combustion apparatus based on local smooth-combustion back-flow region as claimed in claim 1 is characterized in that: described thermal source medium is fuel oil or combustion gas and oxygen rich gas; Described ignition smooth combustion spout, by the oxygen rich air import, the oxygen rich air passage, the oxygen rich air outlet, fuel oil or fuel gas inlet, air inlet, precombustion chamber, igniter, the combustion product gases passage, the combustion product gases export mixes, separate by two-layer housing, in become the combustion product gases passage, become the oxygen rich air passage outward, realize the heat insulation of burning flue by the oxygen rich air passage, the oxygen rich air import, the oxygen rich air passage, oxygen rich air outlet connection successively communicates, igniter head of igniter is installed in the precombustion chamber, fuel inlet is through the atomizing element, or fuel gas inlet is through the combustion gas spout, be connected with precombustion chamber and communicate, the atomizing element is fuel jet or effervescent atomization element, air outlet and precombustion chamber, the combustion product gases passage, combustion product gases outlet connection successively communicates, air outlet connects secondary wind or other cooling air, in the precombustion chamber or be provided with insulating outward, the oxygen rich air outlet, the combustion product gases outlet is positioned at the smooth-combustion back-flow region root position of a wind coal dust of burner spout, in the vertical direction has up or down or has simultaneously the downward perforate that makes progress, and the angle in axle center and a wind coal dust of burner spout axle center is＞10 degree, the oxygen rich air import is connected with source of oxygen by control piper, fuel oil or fuel gas inlet link to each other with oil sources or fuel gas source by control piper, this ignition smooth combustion spout, for oxygen enrichment pre-burning fixedly decline oil or little gas ignition smooth combustion mode.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509659B (en) * | 2009-03-11 | 2012-09-05 | 深圳东方锅炉控制有限公司 | Pulverized coal burner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113847620A (en) * | 2021-08-19 | 2021-12-28 | 华能洛阳热电有限责任公司 | Combustion stabilizing control method for combustion boiler |
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