CN100422637C - High-temperature air lighting system under bed for fluidized bed and circulating fluidized bed boiler - Google Patents
High-temperature air lighting system under bed for fluidized bed and circulating fluidized bed boiler Download PDFInfo
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- CN100422637C CN100422637C CNB2006101316488A CN200610131648A CN100422637C CN 100422637 C CN100422637 C CN 100422637C CN B2006101316488 A CNB2006101316488 A CN B2006101316488A CN 200610131648 A CN200610131648 A CN 200610131648A CN 100422637 C CN100422637 C CN 100422637C
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Abstract
The invention relates to an igniting system for flowing bed and circulating fluid bed boiler in the high temperature air, comprising furnace body, air distribution plate, wind room and wind channel for a first wind, characterized in that electromagnetic induction heater is connected with the wind channel for a first wind in parallel. The first wind is heated by electromagnetic induction heater and is formed high temperature igniting air with more than 900DEG C. Then it enters into furnace to fluidize the igniting material on the air distribution plate and ignite is gradually. The invention is provided with simple technology and structure, no assistant fuel such as oil and gas, low igniting cost, good economic benefit; conveniently adjusting, simple operation, safety and stability, high successful ratio during igniting process; little maintenance in daily and no circumstance pollution so on. It has an influence of energy-saving, oil-saving and circumstance protection and so on. It can be widely applied in the igniting of flowing bed and circulating fluid bed boiler in electrical factory or heat supply system and have huge application value. After it brings into effect social, environmental and economical benefits can be produced notably.
Description
Technical field
The present invention relates to the improvement of fluid bed and CFBB ignition under bed technology, is a kind of fluid bed and CFBB high temperature air ignition under bed system specifically.
Background technology
In the primary energy of China, coal accounts for 71%, and oil and natural gas accounts for 25%.The annual production of oil is about 1.7 hundred million tons, and Imported oil was 1.2 hundred million tons in 2004, accounted for about 7% of world oil volume of trade.China also will increase year by year to the degree of dependence of petroleum import in following 20 years, and this will jeopardize the energy security of country.
Fluid bed and Combustion technology of circulating fluidized have that fuel tolerance is wide, efficiency of combustion is high, desulfurized effect is good, NO
XDischarge the big and lime-ash of low, load regulation range and help advantages such as comprehensive utilization, recent two decades is developed rapidly.
China is that the CFBB owning amount is maximum, also is country with fastest developing speed.So far, more than 2000 of the CFBB of the different evaporation capacity of existing 35-480t/h puts into operation, and total installation of generating capacity reaches 25000MW.And also have high pressure and the super-pressure resuperheat CFBB of more than 100 evaporation capacity more than 410t/h to build.
The CFBB igniting is boiler startup most critical, the relative stage of difficulty.Three developing stage such as a last SSI Solid State Ignition, the igniting of fluidisation attitude and ignition under bed have been experienced in the igniting of CFBB both at home and abroad.CFBB ignition under bed technology, because of its sparking mode is stable, the starting time is short, the ignition success rate advantages of higher is promoted rapidly, and be applied to very soon on the big capacity CFBB, above fluid bed and the CFBB of 75t/h all adopts the ignition under bed mode both at home and abroad.
At present, fluid bed and CFBB ignition under bed mainly adopt a following grease gun igniting.Along with unit capacity to large scale development, starting ignition also increases with oil mass thereupon, thereby has improved cost of electricity-generating.An ignition oil 20t calculates with a 240t CFBB, just needs more than 80,000 yuan (RMB, as follows).Annual average igniting 20 times, 1 year igniting expense of a boiler just will reach more than 1,600,000 yuan.
Therefore, this bed is big, the igniting poor stability of the fuel consumption brought of grease gun igniting mode, the regular maintenance amount is big and fuel oil produces environment problems such as pollution down, all become the principal element of grease gun igniting under the restriction CFBB bed, have a strong impact on and save implementing of petroleum resources and the fundamental state policy of setting up economizing type country.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide a kind of normal temperature air to be heated to high temperature air more than 900 ℃ with about 20 ℃, incendiary source as fluid bed and CFBB, thereby realize that the igniting cost is low, good in economic efficiency, regulate and control convenient, simple to operate, the regular maintenance amount is little, pollution-free, reliability and safe fluid bed and CFBB high temperature air ignition under bed system.
Realize that the fluid bed of the object of the invention and the technical scheme of CFBB high temperature air ignition under bed system are:
This fluid bed and CFBB high temperature air ignition under bed system, constitute by boiler body, air distribution plate, air compartment, a wind air channel, be characterized on a wind air channel, being communicated with a windburn air channel, point windburn air channel is communicated with the electromagnetic induction heater air inlet through the igniting air valve, the electromagnetic induction heater air outlet is communicated with high temperature dot windburn air channel, and high temperature dot windburn air channel is communicated with wind air channel or air compartment; Be connected with air valve one time in the wind air channel between the junction of the junction in wind air channel and some windburn air channel and wind air channel and high temperature dot windburn air channel or air compartment.
Described electromagnetic induction heater is by the permeability magnetic material calandria, form at the inductance coil of heat-insulation layer periphery in non-magnet_conductible material heat-insulation layer, the winding of calandria periphery, and inductance coil is electrically connected with power circuit.
In order to improve the thermal conversion efficiency of electromagnetic induction heater, calandria should adopt, and material high temperature resistant, anti-oxidant, that magnetic conductivity is good is made, and its cross section can be shelf-shaped, circular hole honeycombed, star, radiation or radiation with difformities such as fin shapes.Specification requirement during according to use, calandria can be selected different materials such as Cr28Ni20MoW heat resisting steel, 3YC52 or Ni-Fe-Cr-Al based high-temperature alloy for use.Heat-insulation layer can adopt higher high temperature resistant furnace lining of not magnetic conduction of intensity or different materials such as magnetic conduction ceramic not.Power circuit can adopt different circuit such as thyristor supply or IGBT power supply.
The alternating current that power circuit provides produces alternating magnetic field and makes the calandria heating in inductance coil, make the wind of normal temperature about 20 ℃ that flow through from calandria, is heated rapidly to temperature up to the high temperature air more than 900 ℃.Can pass to cooling water in the equipment such as inductance coil, power circuit, be operated in the normal temperature range to guarantee equipment such as inductance coil, power circuit.
Also can be connected with the automatic temperature monitoring closed control circuit on electromagnetic induction heater, monitor the temperature of calandria itself and calandria outlet air automatically, when temperature was higher than design temperature, automatic powered-down circuit also started holding circuit.
According to the requirement of boiler to the igniting high temperature air, electromagnetic induction heater can adopt one group of operation, also can adopt at least one sets in parallel operation.
Of the present invention simple in structure, this professional those of ordinary skill adopts common process equipment and universal circuit all can implement according to technical solution of the present invention and existing boiler and electromagnetic induction heating technology.
Beneficial effect of the present invention is:
1, high temperature air ignition under bed system fully need not oil, auxiliary fuel such as gas, can realize that the cold and hot state of fluid bed or CFBB starts and steady combustion, the igniting cost is low, good in economic efficiency;
2, high temperature air ignition under bed overall process adopts electromagnetic induction heating technology, and regulation and control are convenient, and are simple to operate;
3, high temperature air ignition under bed system has saved complex device and blasting protection facilitieses such as the necessary oil tank of grease gun igniting, pipeline road, light a fire easy, success rate is high, safe;
4, high temperature air ignition under bed system regular maintenance amount is little, the reliability height;
5, non-pollutant discharge in high temperature air ignition under bed and the steady combustion process, clean environment.
Triple roles such as that high temperature air ignition under bed of the present invention system has concurrently is energy-conservation, fuel-economizing, environmental protection, can be widely used in fluid bed or CFBB igniting in power plant and the heating system, have great promotional value, will produce remarkable social benefit, environmental benefit and economic benefit after the enforcement.
Description of drawings
Fig. 1 is the structural representation of high temperature air ignition under bed a kind of embodiment of system of the present invention.
Fig. 2 is the structural representation of electromagnetic induction heater part among Fig. 1.
Fig. 3 be among Fig. 2 A-A to cross-sectional view.
Fig. 4,5,6, the 7th, the cross-sectional view of calandria in the electromagnetic induction heater.
Among the figure: 1 boiler body, 2 air distribution plates, 3 air compartments, 4 wind air channels, 5 windburn air channels, 6 igniting air valves, 7 electromagnetic induction heaters, 8 air inlets, 9 air outlets, 10 high temperature dot windburn air channels, 11 air valves, 12 calandrias, 13 heat-insulation layers, 14 inductance coils, 15 power circuits, 16 water-cooling systems, 17 automatic temperature monitoring closed control circuits, 18 Sealing jaws.
The specific embodiment
The present invention is further described with the embodiment that provides below in conjunction with accompanying drawing.The invention is not restricted to embodiment, the equivalence change of being done with technical solution of the present invention all belongs in protection scope of the present invention.
Embodiment 1:
With reference to accompanying drawing 1,2,3, this fluid bed and CFBB high temperature air ignition under bed system, constitute by boiler body 1, air distribution plate 2, air compartment 3, a wind air channel 4, on a wind air channel, be communicated with a windburn air channel 5, point windburn air channel is communicated with the air inlet 8 of electromagnetic induction heater 7 through igniting air valve 6, the air outlet 9 of electromagnetic induction heater is communicated with high temperature dot windburn air channel 10, and high temperature dot windburn air channel is communicated with a wind air channel; Be connected with air valve 11 one time in the wind air channel between the junction in the junction in wind air channel and some windburn air channel and wind air channel and high temperature dot windburn air channel.
Electromagnetic induction heater is by permeability magnetic material calandria 12, form at the inductance coil 14 of heat-insulation layer periphery in non-magnet_conductible material heat-insulation layer 13, the winding of calandria periphery, and inductance coil is electrically connected with general silicon controlled power supply circuit 15.Calandria adopts the Cr28Ni20MoW heat-resisting steel material casting high temperature resistant, anti-oxidant, that magnetic conductivity is good to make, and its cross sectional shape is a shelf-shaped shown in Figure 3.Heat-insulation layer adopts the higher high temperature resistant furnace lining of not magnetic conduction of intensity.The alternating current that power circuit provides produces alternating magnetic field in inductance coil, alternating magnetic field produces inductive loop in calandria, make the calandria heating that heats up rapidly, heating is by the wind of normal temperature in the calandria, and formation temperature is up to the high-temperature ignition air more than 900 ℃.Inductance coil and power circuit are operated in the normal temperature range with assurance with water-cooling system 16 coolings.On calandria, be connected with general automatic temperature monitoring closed control circuit 17, with the temperature of automatic monitoring calandria itself and calandria outlet air, automatic powered-down circuit and start holding circuit when temperature is higher than design temperature.
The cross sectional shape of calandria also can select for use circular hole honeycombed shown in Figure 4, star shown in Figure 5, radiation shown in Figure 6 or radiation shown in Figure 7 with fin shape.The two ends of electromagnetic induction heater are provided with Sealing jaw 18, and clamping plate connect air inlet, the air outlet that heat resisting pipe is made outward.
During igniting, air valve air valve of closing, light a fire is opened, wind at first enters the air inlet that is communicated with the electromagnetic induction heater on wind air channel in parallel, high temperature air after the electromagnetic induction heater heating is discharged by air outlet, enter wind air channel, air compartment through high temperature dot windburn air channel, in air distribution plate enters boiler body, the igniting bed material fluidisation on the air distribution plate and being heated to is gradually lighted, finish ignition under bed.After the igniting, air valve air valve of opening, light a fire is closed, and one time wind directly enters in the boiler body through wind air channel, air compartment, an air distribution plate, keeps boiler and normally moves.
Embodiment 2:75t/h CFBB high temperature air ignition under bed system
The general structure of 75t/h CFBB high temperature air ignition under bed system is identical with embodiment 1, the calandria of electromagnetic induction heater adopts the 3YC52 material casting high temperature resistant, anti-oxidant, that magnetic conductivity is good to make in the present embodiment, and its cross sectional shape is a shelf-shaped shown in Figure 3; The long 1.8m of calandria, diameter 0.5m, built-in 13 dividing plates; Heat-insulation layer adopts the higher not magnetic conduction ceramic pipe of intensity; Power circuit is selected the intermediate frequency controllable silicon regulated power supply of 250kw/1000HZ for use.Be arranged in parallel 2 electromagnetic induction heaters in the system.
Embodiment 3:220t/h CFBB high temperature air ignition under bed system
The general structure of 220t/h CFBB high temperature air ignition under bed system is identical with embodiment 1, the calandria of electromagnetic induction heater adopts the Ni-Fe-Cr-Al based high-temperature alloy material casting high temperature resistant, anti-oxidant, that magnetic conductivity is good to make in the present embodiment, and its cross sectional shape is a circular hole honeycombed shown in Figure 4; The long 1.8m of calandria, diameter 0.5m has the hole of 56 diameter 20mm altogether, has the semicircle orifice of 24 diameter 20mm at the calandria edge; Heat-insulation layer adopts the higher high temperature resistant furnace lining of not magnetic conduction of intensity; Power circuit is selected the IGBT intermediate frequency adjustable power power supply of 600kw/1000HZ for use.Be arranged in parallel 4 electromagnetic induction heaters in the system.
For verifying beneficial effect of the present invention, the CFBB that the present inventor chooses same capability is done the performance comparison test of different sparking mode.
Test routine 1:75t/h CFBB ignition performance contrast test
(1) certain 75t/h of factory CFBB high temperature air ignition under bed test
This test example adopts the CFBB high temperature air ignition under bed system of embodiment 2.
A, the test of the high temperature air ignition under bed when boiler oil is brown coal:
Ignition condition:
20 ℃ of bed material initial temperatures, 25 ℃ of igniting air initial temperatures, boiler oil brown coal (dry ash free basis V
r=62%), 2 of electromagnetic induction heaters, every air mass flow 20000m
3/ h.
Ignition process and test result:
During igniting, 2 electromagnetic induction heater total powers drop into, every power 250kw/1000HZ, in the time of 30 minutes with the high temperature air of initial 25 ℃ igniting air heat to 900 ℃; In the time of 60 minutes, the bed material can be heated to 350 ℃, mixes a small amount of introduction coal this moment in stove, and control drops into introduction coal amount, makes bed temperature slowly be increased to 450 ℃, and fixed carbon takes fire in the bed material, and this process needs 20 fens clock times; Finish warm-up phase in the time of 80 minutes, regulate electromagnetic induction heater power, keep 900 ℃ of high temperature airs to 150kw, increasing drops into introduction coal amount to the bed material, after bed temperature is elevated to more than 650 ℃, strengthen introduction coal amount gradually, the rate of climb of control bed temperature is up to continuous throwing coal; When bed temperature was elevated to 850 ℃, igniting was finished, and closed electromagnetic induction heater, dropped into one time wind, entered normal operating phase, whole ignition process 2 hours.
The igniting cost:
Warm-up phase: 80 minutes, power consumption 250 * 2 * 4/3=667KWH; Preheating finishes to normal operating phase: 40 minutes, and power consumption 150 * 2 * 2/3=200KWH.Calculate igniting power consumption totle drilling cost by 0.3 yuan of factory's electricity price/degree: (667+200) * 0.3=260 unit.
B, the test of the high temperature air ignition under bed when boiler oil is bituminous coal:
Ignition condition:
20 ℃ of bed material initial temperatures, 25 ℃ of igniting air initial temperatures, boiler oil bituminous coal (dry ash free basis V
r=36.5%), 2 of electromagnetic induction heaters, every air mass flow 20000m
3/ h.
Ignition process and test result:
During igniting, 2 electromagnetic induction heater total powers drop into, every power 250kw/1000HZ, in the time of 30 minutes with the high temperature air of initial 25 ℃ igniting air heat to 900 ℃; In the time of 85 minutes, the bed material can be heated to 500 ℃, mixes a small amount of introduction coal this moment in stove, and control drops into introduction coal amount, makes bed temperature slowly be increased to 630 ℃, and fixed carbon takes fire in the bed material, and this process needs 25 fens clock times; Finish warm-up phase in the time of 110 minutes, regulate electromagnetic induction heater power, keep 900 ℃ of high temperature airs to 150kw, increasing drops into introduction coal amount to the bed material, after bed temperature is elevated to more than 670 ℃, strengthen introduction coal amount gradually, the rate of climb of control bed temperature is up to continuous throwing coal; When bed temperature was elevated to 850 ℃, igniting was finished, and closed electromagnetic induction heater, dropped into one time wind, entered normal operating phase, whole ignition process 2 hours 30 minutes.
The igniting cost:
Warm-up phase: 110 minutes, power consumption 250 * 2 * 11/6=917KWH; Preheating finishes to normal operating phase: 40 minutes, and power consumption 150 * 2 * 2/3=200KWH.Calculate igniting power consumption totle drilling cost by 0.3 yuan of factory's electricity price/degree: (917+200) * 0.3=335 unit.
(2) grease gun igniting test under the 75t/h CFBB bed:
Grease gun igniting under the 75t/h recirculating fluidized bed bed, igniter is made up of oil gun, high-energy igniter, cyclone, flame holder, combustion chamber etc.
The grease gun igniting test down of A, the bed when boiler oil is brown coal:
Ignition condition:
20 ℃ of bed material initial temperatures, 25 ℃ of igniting air initial temperatures, boiler oil brown coal (dry ash free basis V
r=62%), torch oil gun nominal operation input pressure 2.0-2.5MPa, every specified fuel consumption 600kg/h of oil gun uses diesel oil No. 0, disposes 2 oil guns.
Ignition process and test result:
During the igniting beginning, 2 oil guns all drop into, in ignition air duct, burn after the fuel-oil atmozation, produce about 1500 ℃ high-temperature flue gas, high-temperature flue gas mixes with a wind again, forms in the air compartment that enters behind about 900 ℃ cigarette wind mixture under the boiler grid plate, enters the fluidisation bed of material by air distribution plate, the bed of material is heated, and this section period was controlled at 30 minutes; In the time of 60 minutes, the bed material is heated to 350 ℃, mixes a small amount of introduction coal this moment in stove, and control drops into introduction coal amount, makes bed temperature slowly be increased to 450 ℃, and fixed carbon takes fire in the bed material, and this stage needs 20 fens clock times; In the time of 80 minutes, Oil Gun can be reduced to 300kg/h, keeps 900 ℃ of high temperature airs, increasing drops into introduction coal amount to the bed material, after bed temperature is elevated to more than 650 ℃, strengthen introduction coal amount gradually, the rate of climb of control bed temperature is up to continuous throwing coal, when bed temperature is elevated to 850 ℃, igniting is finished, and closes oil gun, drops into one time wind, enter normal operating phase, whole ignition process 2 hours.
The igniting cost:
2 tons of oil masses are once used in igniting.By oily 4000 yuan of calculating per ton, 8000 yuan of the costs of once lighting a fire.
The grease gun igniting test down of B, the bed when boiler oil is bituminous coal:
Ignition condition:
20 ℃ of bed material initial temperatures, 25 ℃ of igniting air initial temperatures, boiler oil bituminous coal (dry ash free basis V
r=36.5%), torch oil gun nominal operation input pressure 2.0-2.5MPa, every specified fuel consumption 600kg/h of oil gun uses diesel oil No. 0, disposes 2 oil guns.
Ignition process and test result:
During the igniting beginning, 2 oil guns all drop into, in ignition air duct, burn after the fuel-oil atmozation, produce about 1500 ℃ high-temperature flue gas, high-temperature flue gas mixes with a wind again, forms in the air compartment that enters behind about 900 ℃ cigarette wind mixture under the boiler grid plate, enters the fluidisation bed of material by air distribution plate, the bed of material is heated, and this section period was controlled at 45 minutes; In the time of 85 minutes, the bed material is heated to 500 ℃, mixes a small amount of introduction coal this moment in stove, and control drops into introduction coal amount, makes bed temperature slowly be increased to 630 ℃, and fixed carbon takes fire in the bed material.This time needs 35 minutes; In the time of 120 minutes, Oil Gun can be reduced to 300kg/h, keeps 900 ℃ of high temperature airs, increasing drops into introduction coal amount to the bed material, after bed temperature is elevated to more than 670 ℃, strengthen introduction coal amount gradually, the rate of climb of control bed temperature is up to continuous throwing coal, when bed temperature is elevated to 850 ℃, igniting is finished, and closes oil gun, drops into one time wind, enter normal operating phase, whole ignition process 2 hours 30 minutes.
The igniting cost:
3 tons of oil masses are once used in igniting.By oily 4000 yuan of calculating per ton, 1.2 ten thousand yuan of the costs of once lighting a fire.
Test routine 2:220t/h CFBB ignition performance contrast test
(1) certain 220t/h of factory CFBB high temperature air ignition under bed:
This test example adopts the CFBB high temperature air ignition under bed system of embodiment 3.
A, the test of the high temperature air ignition under bed when boiler oil is brown coal:
Ignition condition:
22 ℃ of bed material initial temperatures, 25 ℃ of igniting air initial temperatures, boiler oil brown coal (dry ash free basis V
r=62%), 4 of electromagnetic induction heaters, every air mass flow 20000m
3/ h.
Ignition process is basic identical with test example 1, and through fire trial test, igniting once needs 6 hours, within the electromagnetic induction heater of 4 600KW, warm-up phase 3 hours, and the total power input, power consumption is: 3 * 600 * 4=7200KWH; Arrive normal operating phase 3 hours after the preheating, power is reduced to 300KW, and power consumption is: 3 * 300 * 4=3600KWH.
The igniting cost:
The cost of once lighting a fire is: (7200+3600) * and 0.3=3240 unit.
B, the test of the high temperature air ignition under bed when boiler oil is bituminous coal:
Ignition condition:
22 ℃ of bed material initial temperatures, 25 ℃ of igniting air initial temperatures, boiler oil bituminous coal (dry ash free basis V
r=36.5%), 4 of electromagnetic induction heaters, every air mass flow 20000m
3/ h.
Ignition process is basic identical with test example 1, and through fire trial test, igniting once needs 8 hours, within the electromagnetic induction heater of 4 600KW, warm-up phase 4 hours, and the total power input, power consumption is: 4 * 600 * 4=9600KWH; Arrive normal operating phase 4 hours after the preheating, power is reduced to 300KW, and power consumption is: 4 * 300 * 4=4800KWH.
The igniting cost:
The cost of once lighting a fire is: (9600+4800) * and 0.3=4320 unit.
(2) grease gun igniting under the 220t/h CFBB bed:
The grease gun igniting test down of A, the bed when boiler oil is brown coal:
Ignition condition:
22 ℃ of bed material initial temperatures, 25 ℃ of igniting air initial temperatures, boiler oil brown coal (dry ash free basis V
r=62%), torch oil gun nominal operation input pressure 2.0-2.5MPa, every specified fuel consumption 600kg/h of oil gun uses diesel oil No. 0, disposes 4 oil guns.
Ignition process is basic identical with test example 1, and the igniting overall process needs 6 hours.
The igniting cost:
About 8 tons of oil consumption of ignition, the igniting cost is 3.2 ten thousand yuan.
The grease gun igniting test down of B, the bed when boiler oil is bituminous coal:
Ignition condition:
22 ℃ of bed material initial temperatures, 25 ℃ of igniting air initial temperatures, boiler oil bituminous coal (dry ash free basis V
r=36.5%), torch oil gun nominal operation input pressure 2.0-2.5MPa, every specified fuel consumption 600kg/h of oil gun uses diesel oil No. 0, disposes 4 oil guns.
Ignition process is basic identical with test example 1, and the igniting overall process needs 8 hours.
The igniting cost:
About 20 tons of oil consumption of ignition, the igniting cost is 80,000 yuan.
Result of the test vide infra " test example 1, the 2 CFBB ignition performance comparative test result tables of comparisons ".
Conclusion: show through test example 1,2 CFBB ignition performance contrast tests, the high temperature air igniting has fairly obvious superiority than oil drop fire under the CFBB bed of same capability, especially once the cost high temperature air of lighting a fire igniting at most only is about 10% of oil drop fire, remarkable in economical benefits.Compare with the oil drop fire, the high temperature air igniting does not have equipment such as complicated oil tank, pipeline road, and security performance improves greatly.Because need not oil, both saved a large amount of oily resources, also overcome the pollution that oil firing brought and because of when igniting the kerosene multifuel combustion can not drop into the environmental issue that electric cleaner causes.High temperature air igniting simultaneously do not exist oil atomization, oil gun burn out with burner in problem such as localized hyperthermia, therefore, have characteristics such as ignition success rate height, regulation and control be convenient, simple to operate.Will produce remarkable social benefit, environmental benefit and economic benefit after the enforcement.
Claims (8)
1. fluid bed and CFBB high temperature air ignition under bed system, comprise boiler body, air distribution plate, air compartment, a wind air channel, it is characterized in that on a wind air channel, being communicated with a windburn air channel, point windburn air channel is communicated with the electromagnetic induction heater air inlet through the igniting air valve, the electromagnetic induction heater air outlet is communicated with high temperature dot windburn air channel, and high temperature dot windburn air channel is communicated with wind air channel or air compartment; Be connected with air valve one time in the wind air channel between the junction of the junction in wind air channel and some windburn air channel and wind air channel and high temperature dot windburn air channel or air compartment.
2. fluid bed according to claim 1 and CFBB high temperature air ignition under bed system, it is characterized in that electromagnetic induction heater by the permeability magnetic material calandria, form at the inductance coil of heat-insulation layer periphery in non-magnet_conductible material heat-insulation layer, the winding of calandria periphery, inductance coil is electrically connected with power circuit.
3. fluid bed according to claim 1 and 2 and CFBB high temperature air ignition under bed system, it is characterized in that calandria adopts the material casting high temperature resistant, anti-oxidant, that magnetic conductivity is good to make, its cross sectional shape is that shelf-shaped, circular hole honeycombed, star, radiation or radiation are with fin shape.
4. fluid bed according to claim 3 and CFBB high temperature air ignition under bed system is characterized in that heater material selects Cr28Ni20MoW heat resisting steel, 3YC52 or Ni-Fe-Cr-Al based high-temperature alloy for use.
5. fluid bed according to claim 2 and CFBB high temperature air ignition under bed system is characterized in that heat-insulation layer material selection not high temperature resistant furnace lining of magnetic conduction or magnetic conduction ceramic not.
6. fluid bed according to claim 2 and CFBB high temperature air ignition under bed system is characterized in that power circuit adopts thyristor supply or IGBT power supply.
7. fluid bed according to claim 1 and CFBB high temperature air ignition under bed system is characterized in that being electrically connected with the automatic temperature monitoring closed control circuit on electromagnetic induction heater.
8. fluid bed according to claim 1 and CFBB high temperature air ignition under bed system is characterized in that electromagnetic induction heater adopts 1 group of operation, perhaps adopts 2 groups or 4 sets in parallel operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101316488A CN100422637C (en) | 2006-11-12 | 2006-11-12 | High-temperature air lighting system under bed for fluidized bed and circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101316488A CN100422637C (en) | 2006-11-12 | 2006-11-12 | High-temperature air lighting system under bed for fluidized bed and circulating fluidized bed boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1952478A CN1952478A (en) | 2007-04-25 |
| CN100422637C true CN100422637C (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101316488A Expired - Fee Related CN100422637C (en) | 2006-11-12 | 2006-11-12 | High-temperature air lighting system under bed for fluidized bed and circulating fluidized bed boiler |
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| Country | Link |
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| CN (1) | CN100422637C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009092236A1 (en) * | 2008-01-16 | 2009-07-30 | Jianfeng Han | An igniting and stable combusting device and its usage method of pulverized coal boiler |
| CN101476720B (en) * | 2008-11-11 | 2010-12-15 | 烟台双强燃烧控制工程有限公司 | Ignition device under circulating sulfuration bed of boiler |
| CN102095196B (en) * | 2011-03-08 | 2012-07-04 | 张全胜 | Oilless ignition method of fluidized bed boiler |
| CN104791779A (en) * | 2015-04-16 | 2015-07-22 | 无锡锡能锅炉有限公司 | Ignition-under-bed combustion device with air cooling structure for circulating fluidized bed boiler |
| CN105299633A (en) * | 2015-11-14 | 2016-02-03 | 国网山西省电力公司电力科学研究院 | Bed material heating system for circulating fluidized bed boiler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183805A (en) * | 1984-10-01 | 1986-04-28 | Mitsubishi Heavy Ind Ltd | Method of burning pulverized solid fuel and the like |
| CN2163303Y (en) * | 1992-09-24 | 1994-04-27 | 煤炭科学研究总院 | Bottom igniting device of fluidized-bed boiler |
| JP2004317087A (en) * | 2003-04-18 | 2004-11-11 | Nippon Kankyo Keikaku Kk | Decomposition method for wastes containing aromatic compound |
| CN1805628A (en) * | 2005-12-18 | 2006-07-19 | 王鹏 | Electromagnetic induction heating apparatus |
| CN200972111Y (en) * | 2006-11-12 | 2007-11-07 | 东北电力大学 | Fluid-bed and high temp air ignition system for circulation fluid-bed boiler |
-
2006
- 2006-11-12 CN CNB2006101316488A patent/CN100422637C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183805A (en) * | 1984-10-01 | 1986-04-28 | Mitsubishi Heavy Ind Ltd | Method of burning pulverized solid fuel and the like |
| CN2163303Y (en) * | 1992-09-24 | 1994-04-27 | 煤炭科学研究总院 | Bottom igniting device of fluidized-bed boiler |
| JP2004317087A (en) * | 2003-04-18 | 2004-11-11 | Nippon Kankyo Keikaku Kk | Decomposition method for wastes containing aromatic compound |
| CN1805628A (en) * | 2005-12-18 | 2006-07-19 | 王鹏 | Electromagnetic induction heating apparatus |
| CN200972111Y (en) * | 2006-11-12 | 2007-11-07 | 东北电力大学 | Fluid-bed and high temp air ignition system for circulation fluid-bed boiler |
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| CN1952478A (en) | 2007-04-25 |
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