CN103575096A - Pulverized coal pellet spraying and burning system - Google Patents
Pulverized coal pellet spraying and burning system Download PDFInfo
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- CN103575096A CN103575096A CN201310601179.1A CN201310601179A CN103575096A CN 103575096 A CN103575096 A CN 103575096A CN 201310601179 A CN201310601179 A CN 201310601179A CN 103575096 A CN103575096 A CN 103575096A
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Abstract
The invention belongs to the technical field of pellet roasting, and in particular relates to a pulverized coal pellet spraying and burning system. The system comprises a pulverized coal storing device, a pulverized coal spraying device and a pulverized coal burning device, wherein the pulverized coal storing device has a pulverized coal ore bin; the pulverized coal spraying device comprises a pulverized coal conveying fan, a pulverized coal fan conveying pipe, a combustion fan and a combustion fan conveying pipe; the pulverized coal burning device comprises a pulverized coal burner and a revolving kiln. The pulverized coal pellet spraying and burning system is characterized in that a combustible gas detector is arranged in the dead angle area of the pulverized coal ore bin; a discharging port of the pulverized coal ore bin is provided with a fluidizing device; a gas inlet pipe of the fluidizing device is provided with an electromagnetic valve; an explosion relieving and preventing valve is arranged on the pulverized coal ore bin; an infrared high-temperature imaging instrument is arranged on the revolving kiln close to the pulverized coal burner. The pulverized coal pellet spraying and burning system has the advantages of simple structure, reasonable design, safe operation, low investment, low repairing rate, low production cost and high economic benefit.
Description
Technical field
The invention belongs to pellet roasting technical field, especially relate to a kind of pelletizing breeze blowing and combustion system.
Background technology
At present, grate-kiln pelletizing method of roasting is burning gases fuel and combusting coal fines.The coal dust of burning is pulverized bituminous coal, and because pulverized bituminous coal is inflammable and explosive, pulverized coal preparation storage process must the strict concentration of controlling the fuel gas in coal dust atmosphere.At present, common way is: only control the naked light that stores combusting coal fines workshop, prevent coal dust firing blast.This coal dust stores with combustion method and has following problem: 1) can not fundamentally solve coal dust firing hidden peril of explosion; 2), because coal dust storage area does not carry out Real-Time Monitoring to combustable gas concentration, can not take effective protection measure to prevent that combustable gas concentration from exceeding standard; 3) coal dust storage facilities lacks explosion venting device, once fuel gas exceeds standard to blast, damages coal dust storage facilities; 4) often there is putty phenomenon in coal dust storage facilities; 5) coal dust conveying fan and the combustion fan of winding-up only arrange diffusion valve on wind pipeline, by open and close diffusion valve, control blower fan wind supply quantity, waste mass energy; 6) rotary kiln combustion system is passed through thermocouple control combustion state, thermocouple reactive combustion state labile, and easily there is coal dust firing not exclusively or burning problem in actual production process.
Summary of the invention
The object of this invention is to provide a kind of safe and reliable, maintenance rate is low, power consumption is low, Combustion Efficiency of Coal Powder is high, production run is stable pelletizing breeze blowing and combustion system.
The object of the invention is to realize by following technical proposals:
Pelletizing breeze blowing of the present invention and combustion system, comprise coal dust storage device, coal powder blowing device and coal powder burner, described coal dust storage device comprises coal dust ore storage bin, be located at the Pneumatic conveying pipeline at this coal dust ore storage bin top, unloading valve, sack cleaner and exhaust emission pipe, be located at coal powder metering device and the pulverized coal conveying device of described coal dust ore storage bin bottom, described coal powder blowing device comprises coal dust conveying fan, the coal powder fan conveyance conduit that coal dust conveying fan is connected therewith, combustion fan, the combustion fan conveyance conduit that combustion fan is connected therewith, described coal powder burner comprises coal burner, the rotary kiln that coal burner is connected therewith, described coal burner is connected with described combustion fan conveyance conduit with described coal powder fan conveyance conduit respectively, it is characterized in that being provided with combustible gas detector at the dead angle area of described coal dust ore storage bin, at described coal dust ore storage bin discharge gate, be provided with fluidizer, in the air inlet pipe of this fluidizer, be provided with electromagnetic valve, on described coal dust ore storage bin, be provided with venting of dust explosion explosion-proof valve, on described rotary kiln, and be provided with infrared high temperature imager near described coal burner position.
The motor of described coal dust conveying fan and described combustion fan is frequency control motor.
Advantage of the present invention:
(1) the present invention is simple in structure, reasonable in design, security of operation, small investment, and maintenance rate is low, and production cost is low, and economic benefit is high;
(2) pelletizing breeze blowing of the present invention and combustion system have been set up combustible gas detector in coal dust ore storage bin, and the combustable gas concentration in can Real-Time Monitoring coal dust storage area, prevents that combustable gas concentration from exceeding standard, and has increased security and the stability of system;
(3) pelletizing breeze blowing of the present invention and combustion system are provided with explosion-proof decompression device on coal dust ore storage bin, when coal dust ore storage bin is blasted, can let out in time except pressure, and prevent exploding is to damage of facilities;
(4) pelletizing breeze blowing of the present invention and combustion system are provided with the electromagnetic valve of dredging stifled fluidizer and control nitrogen air inflow for nitrogen in coal dust ore storage bin bottom, with the combustible gas detector chain control that cooperatively interacts, can guarantee system combustable gas concentration, prevent that Pulverized Coal Bin putty accident from occurring;
(5) the coal dust conveying fan of pelletizing breeze blowing of the present invention and combustion system and combustion fan all adopt variable-frequency motor, effectively reduce fan operation expense;
(6) pelletizing breeze blowing of the present invention and combustion system arrange infrared high temperature imager near coal burner, can effectively observe coal dust firing state, control the winding-up amount of coal dust and the air quantity of phase Blowing stopper and supply with.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, further illustrate the specific embodiment of the present invention.
As shown in Figure 1, pelletizing breeze blowing of the present invention and combustion system, comprise coal dust storage device, coal powder blowing device and coal powder burner, described coal dust storage device comprises coal dust ore storage bin 11, be located at the Pneumatic conveying pipeline 5 at these coal dust ore storage bin 11 tops, unloading valve 6, sack cleaner 7 and exhaust emission pipe 8, be located at coal powder metering device 14 and the pulverized coal conveying device 15 of described coal dust ore storage bin 11 bottoms, described coal powder blowing device comprises coal dust conveying fan 2, the coal powder fan conveyance conduit 1 that coal dust conveying fan 2 is connected therewith, combustion fan 3, the combustion fan conveyance conduit 4 that combustion fan 3 is connected therewith, described coal powder burner comprises coal burner 16, the rotary kiln 18 that coal burner 16 is connected therewith, described coal burner 16 is connected with described combustion fan conveyance conduit 4 with described coal powder fan conveyance conduit 1 respectively, it is characterized in that being provided with combustible gas detector 10 at the dead angle area of described coal dust ore storage bin 11, at described coal dust ore storage bin 11 discharge gates, be provided with fluidizer 13, in the air inlet pipe of this fluidizer 13, be provided with electromagnetic valve 12, on described coal dust ore storage bin 11, be provided with venting of dust explosion explosion-proof valve 9, on described rotary kiln 18, and be provided with infrared high temperature imager 17 near described coal burner 16 positions.
The motor of described coal dust conveying fan 2 and described combustion fan 3 is frequency control motor.
Pelletizing breeze blowing of the present invention and combustion system have been set up combustible gas detector 10 in coal dust ore storage bin 11, and the combustable gas concentration in can Real-Time Monitoring coal dust storage area, prevents that combustable gas concentration from exceeding standard, and has increased security and the stability of system.On coal dust ore storage bin 11, be provided with venting of dust explosion explosion-proof valve 9, when coal dust ore storage bin is blasted, can let out in time except pressure, prevent exploding is to damage of facilities.At coal dust ore storage bin 11 discharge gates, be provided with fluidizer 13, in the air inlet pipe of this fluidizer 13, be also provided with electromagnetic valve 12, fluidizer 13 uses nitrogen not only can play fluidization but also can prevent that the inner combustable gas concentration of coal dust ore storage bin 11 from exceeding standard as source of the gas, electromagnetic valve 12 and the chain control of combustible gas detector 10, when coal dust ore storage bin 11 combustable gas concentrations surpass prescribed limit, electromagnetic valve 12 is opened and be filled with nitrogen in coal dust ore storage bin 11.Coal dust conveying fan 2 and combustion fan 3 adopt the roots blower of high pressure can be provided, and adopt frequency control motor, effectively reduce fan operation expense.On rotary kiln 18, and be provided with infrared high temperature imager 17 near coal burner 16 positions, can effectively observe coal dust firing state, control the winding-up amount of coal dust and the air quantity of phase Blowing stopper and supply with.The present invention is simple in structure, reasonable in design, security of operation, small investment, and maintenance rate is low, and production cost is low, and economic benefit is high.
Claims (2)
1. a pelletizing breeze blowing and combustion system, comprise coal dust storage device, coal powder blowing device and coal powder burner, described coal dust storage device comprises coal dust ore storage bin, be located at the Pneumatic conveying pipeline at this coal dust ore storage bin top, unloading valve, sack cleaner and exhaust emission pipe, be located at coal powder metering device and the pulverized coal conveying device of described coal dust ore storage bin bottom, described coal powder blowing device comprises coal dust conveying fan, the coal powder fan conveyance conduit that coal dust conveying fan is connected therewith, combustion fan, the combustion fan conveyance conduit that combustion fan is connected therewith, described coal powder burner comprises coal burner, the rotary kiln that coal burner is connected therewith, described coal burner is connected with described combustion fan conveyance conduit with described coal powder fan conveyance conduit respectively, it is characterized in that being provided with combustible gas detector at the dead angle area of described coal dust ore storage bin, at described coal dust ore storage bin discharge gate, be provided with fluidizer, in the air inlet pipe of this fluidizer, be provided with electromagnetic valve, on described coal dust ore storage bin, be provided with venting of dust explosion explosion-proof valve, on described rotary kiln, and be provided with infrared high temperature imager near described coal burner position.
2. pelletizing breeze blowing according to claim 1 and combustion system, is characterized in that the motor of described coal dust conveying fan and described combustion fan is frequency control motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310601179.1A CN103575096A (en) | 2013-11-25 | 2013-11-25 | Pulverized coal pellet spraying and burning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310601179.1A CN103575096A (en) | 2013-11-25 | 2013-11-25 | Pulverized coal pellet spraying and burning system |
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| CN103575096A true CN103575096A (en) | 2014-02-12 |
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| CN201310601179.1A Pending CN103575096A (en) | 2013-11-25 | 2013-11-25 | Pulverized coal pellet spraying and burning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081455A (en) * | 2019-05-15 | 2019-08-02 | 金方圆安全技术研究院（苏州）有限公司 | A kind of quick-fried integrated protection system of pulverized coal preparation control |
| CN111362002A (en) * | 2020-03-25 | 2020-07-03 | 济南黄台煤气炉有限公司 | Pneumatic conveying system for high-temperature air of pulverized coal |
| CN112050468A (en) * | 2020-07-24 | 2020-12-08 | 四川老李科技有限公司 | Spiral plate type internal combustion high-efficiency hot blast stove |
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| CN1667316A (en) * | 2005-02-03 | 2005-09-14 | 新兴铸管股份有限公司 | Blast furnace coal injection process under sharp working condition |
| US7271201B1 (en) * | 2006-08-07 | 2007-09-18 | Syntroleum Corporation | Use of waste heat from Fischer-Tropsch synthesis to form dry pulverized fuel feedstock |
| JP2013002724A (en) * | 2011-06-16 | 2013-01-07 | Jp Steel Plantech Co | Waste heat recovery equipment, waste heat recovery method, and sintering machine system |
| CN202869227U (en) * | 2012-09-26 | 2013-04-10 | 江苏中圣园科技股份有限公司 | Pulverized coal combustion system applied to externally-arranged combustion chamber of sleeve kiln |
| CN103234350A (en) * | 2013-05-23 | 2013-08-07 | 中冶北方（大连）工程技术有限公司 | Hot air supply system for belt type roasting machine |
| CN203550532U (en) * | 2013-11-25 | 2014-04-16 | 中冶北方（大连）工程技术有限公司 | Palletizing coal dust blowing and burning system |
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2013
- 2013-11-25 CN CN201310601179.1A patent/CN103575096A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667316A (en) * | 2005-02-03 | 2005-09-14 | 新兴铸管股份有限公司 | Blast furnace coal injection process under sharp working condition |
| US7271201B1 (en) * | 2006-08-07 | 2007-09-18 | Syntroleum Corporation | Use of waste heat from Fischer-Tropsch synthesis to form dry pulverized fuel feedstock |
| JP2013002724A (en) * | 2011-06-16 | 2013-01-07 | Jp Steel Plantech Co | Waste heat recovery equipment, waste heat recovery method, and sintering machine system |
| CN202869227U (en) * | 2012-09-26 | 2013-04-10 | 江苏中圣园科技股份有限公司 | Pulverized coal combustion system applied to externally-arranged combustion chamber of sleeve kiln |
| CN103234350A (en) * | 2013-05-23 | 2013-08-07 | 中冶北方（大连）工程技术有限公司 | Hot air supply system for belt type roasting machine |
| CN203550532U (en) * | 2013-11-25 | 2014-04-16 | 中冶北方（大连）工程技术有限公司 | Palletizing coal dust blowing and burning system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081455A (en) * | 2019-05-15 | 2019-08-02 | 金方圆安全技术研究院（苏州）有限公司 | A kind of quick-fried integrated protection system of pulverized coal preparation control |
| CN111362002A (en) * | 2020-03-25 | 2020-07-03 | 济南黄台煤气炉有限公司 | Pneumatic conveying system for high-temperature air of pulverized coal |
| CN112050468A (en) * | 2020-07-24 | 2020-12-08 | 四川老李科技有限公司 | Spiral plate type internal combustion high-efficiency hot blast stove |
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Application publication date: 20140212 |