CN102748855B - Energy-saving vertical type coal dust hot-blast stove with double combustion nozzles - Google Patents
Energy-saving vertical type coal dust hot-blast stove with double combustion nozzles Download PDFInfo
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- CN102748855B CN102748855B CN201210232647.8A CN201210232647A CN102748855B CN 102748855 B CN102748855 B CN 102748855B CN 201210232647 A CN201210232647 A CN 201210232647A CN 102748855 B CN102748855 B CN 102748855B
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Abstract
The invention discloses an energy-saving vertical type coal dust hot-blast stove with double combustion nozzles, comprising combustion nozzles (1), a stove body (2), a refractory stove lining (3), an ash bucket (4), an ash discharge spiral reamer (5), an oil injection nozzle (6), a burning torch (7), a primary air fan (8), a secondary air fan (9), a coolant injection fan (10), a coal dust blender (11), a thermocouple for temperature detection (12), a pressure transmitter for pressure detection (13), a flame detector for flame intensity detection (14), a fire stopping beam (15) and a ventilation beam (16). The energy-saving vertical type coal dust hot-blast stove with double combustion nozzles has the following operating mode: firstly, diesel oil is injected into the combustion nozzles (1), atomized by the oil injection nozzle (6), ignited by the burning torch (7), and burnt in the stove body (2), and air is distributed for the combustion nozzles (1) through the primary air fan (8) and the secondary air fan (9) for supplying oxygen required by diesel oil burning. The design of the fire stopping beam (15) and the ventilation beam (16) guarantees that the stove volume of the hot-blast stove exceeds 100m<3> and the stove volume of a traditional vertical stove is broken through; the quantity of the combustion nozzles (1) is also increased while the stove volume of the hot-blast stove is increased, and the fixed form of the traditional vertical stove with a single combustion nozzle is changed; and in addition, due to the design of the fire stopping beam (15) and the ventilation beam (16), the internal furnace of the traditional vertical stove is eliminated in the hot-blast stove, so that the structure of the vertical stove is simplified and the weight of the vertical stove equipment is reduced.
Description
Technical field
The present invention relates to the vertical pulverized coal hot air furnace equipment of a kind of energy-conservation pair of burner, belong to the recycling field of solid waste process field, particularly slag and slag.
Background technology
At present, the kind of hot-blast stove is a lot, has gas furnace, fluidized bed furnace and coal-powder boiler etc.Gas furnace common fuel is blast furnace gas, and civil engineering costs and cost of equipment are low, but is subject to the restriction of fuel, must in the nearer scope in distance steel ironworks, use; The fuel of fluidized bed furnace is small-particle coal, and cost of equipment is low, but coal combustion is abundant not, and working environment dust is more; Coal-powder boiler mainly comprises two kinds of horizontal chamber furnace (oven) and shaft (tower) furnaces, fuel is levigate coal dust, sufficient combustion, but horizontal chamber furnace (oven) exists that floor space is large, civil engineering costs is high, the easy shortcoming such as coking in stove, and traditional shaft (tower) furnace exists heat size little, be difficult to meet the shortcoming of large-scale slag vertical-mill heat supply needs.
Summary of the invention
The object of this invention is to provide the vertical pulverized coal hot air furnace equipment of a kind of energy-conservation pair of burner, comprise burner, body of heater, refractory lining, ash bucket, ash discharge screw reamer, atomizer, burning torch, primary air fan, overfire air fan, mix air-cooler, coal, pulverulent fuel mixer, thermocouple for temperature detection, for pressure detecting, pressure transmitter, flame intensity detect with fire and examine device, keep off fiery beam and ventilation beam.Spray into coal dust in stove by burn diesel oil ignited after, in stove, realize smooth combustion and provide flue gas to the external world.This equipment can be used to utilize Vertical Mill, the coal mill in field and dodge the hot wind supplies such as dry machine for slag and Comprehensive Utilization of Steel Slag.
Described burner comprises igniting muzzle, atomizer mouth, observation panel, the combustion-supporting air port of diesel oil, primary air nozzle and overfiren air port.Wherein light a fire muzzle, atomizer mouth, observation panel is arranged in the top of burner, and whether handled easily personnel observe diesel oil with burning torch igniting simultaneously and light; The combustion-supporting air port of diesel oil communicates with atomizer mouth pipeline, and the convenient combustion air from overfire air fan provides oxygen for diesel combustion; Primary air nozzle is the coal dust import of burner simultaneously, facilitates a wind to play coal dust and carries and the combustion-supporting effect of coal dust; Overfiren air port is positioned at below primary air nozzle, and the coal dust that the convenient air being entered by overfiren air port enters with primary air nozzle mixes and forms coal powder cyclone.
Described body of heater comprises that cold wind import, hot-blast outlet, temperature-measuring port, pressure tap, flame detect mouth and ash discharging hole.Wherein respectively there is a cold wind import at furnace roof and furnace bosh place, and the cold blast rate that the import of furnace roof cold wind enters is less, mainly play coal dust combustion-supporting and control the length of flame, and the cold blast rate that the import of furnace bosh cold wind enters is more, mainly plays inner flue gas of the stove and converts wind action; Hot-blast outlet is positioned at ash bucket top, facilitates the lime-ash in flue gas to deposit in ash bucket; Ash discharging hole is positioned at the ash discharge screw reamer outlet of ash bucket below, facilitates ash discharge; Temperature-measuring port, pressure tap and flame detect mouth and are positioned at upper of furnace body near the position of burner, respectively have 1 group near each burner, convenient furnace temperature, furnace pressure and the flame combustion intensity of detecting.
Described gear fire beam and ventilation beam respectively have 2, through refractory lining, weld with body of heater.Keep off fiery beam horizontally disposed, ventilation beam is vertically arranged, covers castable refractory on beam, and ventilation beam is hollow form, can take away the heat transmitting in stove by middle circulation of air, guarantees can not produce distortion near the ventilation beam of flame.The design that keeps off fiery beam and ventilation beam has solved because body of heater is large, and the cold and hot distortion in furnace wall is large, the caducous problem of refractory lining.And broken traditional shaft (tower) furnace and built refractory lining by laying bricks or stones conventional design on stainless steel flue, simplified hot-blast stove structure, reduced the Master Cost of hot-blast furnace equipment, reduced hot-blast furnace equipment weight, saved the civil engineering costs of hot-blast stove factory building.
The energy-conservation pair of vertical pulverized coal hot air furnace equipment of burner using method is: first open primary air fan and overfire air fan to a small amount of air blast in burner; Again diesel oil is sprayed into burner, after atomizer atomization, with burning torch, light; Diesel oil burns in body of heater, and by primary air fan and overfire air fan to burner air distribution, provide diesel combustion required oxygen; When furnace temperature rises to 300 ℃ of left and right, levigate coal dust is sent in coal, pulverulent fuel mixer, and by the air blast of primary air fan, coal dust is sent into burner, in stove, carry out the mixed combustion of kerosene with diesel oil; When furnace temperature further rises to more than 800 ℃, stop spraying diesel oil in stove, make coal dust independent burning; Unlatching is mixed air-cooler and is carried out converting wind in stove, produces the flue gas that meets serviceability temperature and quantity; 2 burners can regulate according to the demand of flue gas, if demand is less, only with 1 cover burner work; If demand is larger, with 2 cover burner work.
In sum, it is little that space is taken up an area in the present invention, pollution-free, and automaticity is high, saving equipment and civil engineering costs, and Combustion Efficiency of Coal Powder is high, can not produce slagging, the oven dry place that to be applicable to take coal dust be fuel.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is the top view in Fig. 1.
Fig. 3 is the left view in Fig. 1.
Fig. 4 is the front view of burner of the present invention.
Fig. 5 is the top view in Fig. 4.
Fig. 6 is the left view in Fig. 4.
Fig. 7 is the right view in Fig. 4.
The main symbol description of accompanying drawing
1 burner
The 1-1 igniting combustion-supporting air port of muzzle 1-2 atomizer mouth 1-3 observation panel 1-4 diesel oil 1-5 primary air nozzle 1-6 overfiren air port
2 bodies of heater
2-1 cold wind import 2-2 hot-blast outlet 2-3 temperature-measuring port 2-4 pressure tap 2-5 flame detects a mouthful 2-6 ash discharging hole
3 refractory linings
4 ash buckets
5 ash discharge screw reamers
6 atomizers
8 primary air fans
9 overfire air fans
10 mix air-cooler
11 coal, pulverulent fuel mixers
12 temperature detection thermocouples
13 pressure detecting pressure transmitters
14 flame intensities detect with fire inspection device
The fiery beam of 15 gear
16 ventilation beams
The specific embodiment
If Fig. 1,2,3 is for a kind of energy-conservation pair of vertical pulverized coal hot air furnace equipment of burner schematic diagram of the present invention, comprises burner 1, body of heater 2, refractory lining 3, ash bucket 4, ash discharge screw reamer 5, atomizer 6, primary air fan 8, overfire air fan 9, mix air-cooler 10, coal, pulverulent fuel mixer 11, thermocouple 12 temperature detection for, pressure detecting for, pressure transmitter 13, flame intensity fieryly for detecting are examined device 14, kept off fiery beam 15 and ventilation beam 16; After first diesel oil being sprayed into burner atomization, light, when furnace temperature rises to uniform temperature, levigate coal dust is sent in stove and carried out the mixed combustion of kerosene with diesel oil, when furnace temperature further rises to uniform temperature, stop diesel oil, make coal dust independent burning, produce flue gas.
Described burner 1 comprises igniting muzzle 1-1, atomizer mouth 1-2, observation panel 1-3, the combustion-supporting air port 1-4 of diesel oil, primary air nozzle 1-5 and overfiren air port 1-6; Igniting muzzle 1-1, atomizer mouth 1-2, observation panel 1-3 are arranged in the top of burner, and whether operating personnel can observe diesel oil with burning torch igniting and light simultaneously; The combustion-supporting air port 1-4 of diesel oil communicates with atomizer mouth pipeline, can be diesel combustion oxygen is provided from the combustion air of overfire air fan; Primary air nozzle 1-5 is the coal dust import of burner simultaneously, and the air blast of primary air fan enters burner by this mouth, plays coal dust and carries and the combustion-supporting effect of coal dust; Overfiren air port 1-6 is positioned at below primary air nozzle, and the air blast of overfire air fan enters burner by this mouth, and the coal dust entering with primary air nozzle mixes and forms coal powder cyclone.
Described body of heater 2 comprises that cold wind import 2-1, hot-blast outlet 2-2, temperature-measuring port 2-3, pressure tap 2-4, flame detect mouthful 2-5 and ash discharging hole 2-6; Respectively there is a cold wind import 2-1 at furnace roof and furnace bosh place, and the cold blast rate that the import of furnace roof cold wind enters is less, mainly play coal dust combustion-supporting and control the length of flame, and the cold blast rate that the import of furnace bosh cold wind enters is more, mainly plays inner flue gas of the stove and converts wind action; Hot-blast outlet 2-2 is positioned at ash bucket top, facilitates the lime-ash in flue gas to deposit in ash bucket; Ash discharging hole 2-6 is positioned at the ash discharge screw reamer outlet of ash bucket below, facilitates ash discharge; Temperature-measuring port 2-3, pressure tap 2-4 and flame detect a mouthful 2-5 and are positioned at upper of furnace body near the position of burner, and each burner is joined 1 group, convenient furnace temperature, furnace pressure and the flame combustion intensity of detecting.The vertical pulverized coal hot air furnace equipment of two burners using method, step is as follows:
1. open primary air fan 8 and overfire air fan 9 and ventilate to burner 1 by primary air nozzle 1-5, overfiren air port 1-6 and the combustion-supporting air port 1-4 of diesel oil, provide and light the required oxygen of diesel oil;
2. by diesel oil station, diesel oil is sprayed into burner 1 by atomizer mouth 1-2, after atomizer 6 atomizations, with burning torch 7, light;
3. by adjusting the rotating speed of frequency conversion fan or the airduct valve opening of constant speed blower fan, adjust the wind supply quantity of primary air fan 8 and overfire air fan 9; 4. when furnace temperature rises to 300 ℃ of left and right, levigate coal dust is sent in coal, pulverulent fuel mixer 11, and increased the air output of primary air fan 8, coal dust is sent into after burner 1, in body of heater 2, carry out the mixed combustion of kerosene with diesel oil;
5. when furnace temperature rises to more than 800 ℃, stop spraying diesel oil in stove, make coal dust independent burning, and open and to mix the cold wind import 2-1 of air-cooler 10 by furnace roof and furnace bosh and carry out converting wind in stove, produce the flue gas that meets serviceability temperature and quantity and sent by hot-blast outlet 2-2;
In said method step 4, more than the preferred calorific value 5500kCal of coal dust, fugitive constituent is not less than 25%, and fineness 80 μ m tail over and are not more than 10%.
Through converting the inner flue gas of the stove of cold wind, the hot-blast outlet 2-2 by body of heater 2 delivers to Vertical Mill/coal and grinds, and temperature is 400-700 ℃.
Claims (11)
1. the energy-conservation pair of vertical pulverized coal hot air furnace of burner, is characterized in that: comprising: burner (1), body of heater (2), refractory lining (3), ash bucket (4), ash discharge screw reamer (5), atomizer (6), burning torch (7), primary air fan (8), overfire air fan (9), mix air-cooler (10), coal, pulverulent fuel mixer (11), thermocouple (12) for temperature detection, for pressure detecting, pressure transmitter (13), flame intensity detect with fire and examine device (14), keep off fiery beam (15) and ventilation beam (16); 1 body of heater (2) is joined 2 burners (1); The air outlet of primary air fan (8), overfire air fan (9) is connected by pipeline with the air inlet of burner (1); Coal, pulverulent fuel mixer (11) is arranged in the connecting pipe of primary air fan (8) and burner (1); The air outlet of mixing air-cooler (10) is connected by pipeline with the air inlet of body of heater (2); Keep off fiery beam (15) horizontally disposed through refractory lining (3), be welded on body of heater (2); Ventilation beam (16) is vertically arranged through refractory lining (3), is welded on body of heater (2).
2. a kind of energy-conservation pair of vertical pulverized coal hot air furnace of burner according to claim 1, is characterized in that: described burner (1) comprises igniting muzzle (1-1), atomizer mouth (1-2), observation panel (1-3), the combustion-supporting air port of diesel oil (1-4), primary air nozzle (1-5) and overfiren air port (1-6).
3. a kind of energy-conservation pair of vertical pulverized coal hot air furnace of burner according to claim 1, is characterized in that: body of heater comprises that cold wind import (2-1), hot-blast outlet (2-2), temperature-measuring port (2-3), pressure tap (2-4), flame detect mouthful (2-5) and an ash discharging hole (2-6).
4. a kind of energy-conservation pair of vertical pulverized coal hot air furnace of burner according to claim 1, it is characterized in that: described gear fire beam (15) and ventilation beam (16) respectively have 2, keep off the upper covering of fiery beam (15) and ventilation beam (16) castable refractory, and ventilation beam (16) is hollow form.
5. the using method of the energy-conservation pair of vertical pulverized coal hot air furnace of burner as described in one of claim 1-4, its step is as follows:
1) open primary air fan (8) and overfire air fan (9) and ventilate to burner (1), provide and light the required oxygen of diesel oil;
2) by diesel oil station, diesel oil is sprayed into burner (1), after atomizer (6) atomization, with burning torch (7), light;
3) by adjusting the rotating speed of frequency conversion fan or the airduct valve opening of constant speed blower fan, adjust the wind supply quantity of primary air fan (8) and overfire air fan (9);
4) when furnace temperature rises to 300 ℃ of left and right, levigate coal dust is sent in coal, pulverulent fuel mixer (11), and increased the air output of primary air fan (8), coal dust is sent into after burner (1), in body of heater (2), carry out the mixed combustion of kerosene with diesel oil;
5) when furnace temperature rises to more than 800 ℃, stop spraying diesel oil in stove, make coal dust independent burning, and open and to mix air-cooler (10) and carry out converting wind in stove, to produce the flue gas that meets serviceability temperature and quantity.
6. using method according to claim 5, it is characterized in that: primary air fan (8) blasts normal temperature air by primary air nozzle (1-5) to burner (1), overfire air fan (9) blasts normal temperature air by overfiren air port (1-6) and the combustion-supporting air port of diesel oil (1-4) to burner (1), realizes the oxygen supply of the interior diesel oil of stove and coal dust firing.
7. using method according to claim 5, it is characterized in that: the diesel oil from diesel oil station enters after atomizer (6) atomization by atomizer mouth (1-2), burning torch (7) is lighted the diesel oil of atomization by igniting muzzle (1-1) sparking, by observation panel (1-3) point of observation condition of a fire condition.
8. using method according to claim 5, it is characterized in that: mix the cold wind import (2-1) of air-cooler (10) by body of heater (2) and blast normal temperature air in stove, mix with the flue gas in stove, to produce the flue gas that meets serviceability temperature and quantity.
9. using method according to claim 5, it is characterized in that: be equipped with that 2 sleeving temperatures detect with thermocouple (12), pressure detecting for, pressure transmitter (13) and flame intensity detect with the fiery device (14) of examining and monitor by temperature-measuring port (2-3), pressure tap (2-4), the flame detection mouth (2-5) of body of heater (2), so that operating personnel adjust the operation of equipment in time according to stove intrinsic parameter.
10. using method according to claim 5, is characterized in that: the slag that coal dust firing produces is collected and discharged out of the furnace by ash discharging hole (2-6) by ash discharge screw reamer (5) in ash bucket (4).
11. usings method according to claim 5, is characterized in that: through converting the inner flue gas of the stove of cold wind, by the hot-blast outlet (2-2) of body of heater (2), deliver to Vertical Mill/coal mill, temperature is 400-700 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210232647.8A CN102748855B (en) | 2012-07-05 | 2012-07-05 | Energy-saving vertical type coal dust hot-blast stove with double combustion nozzles |
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| CN201210232647.8A CN102748855B (en) | 2012-07-05 | 2012-07-05 | Energy-saving vertical type coal dust hot-blast stove with double combustion nozzles |
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| CN102748855B true CN102748855B (en) | 2014-09-10 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567283A (en) * | 2013-10-10 | 2015-04-29 | 宁夏琪凯节能设备有限公司 | Novel energy-saving slag dryer |
| CN110595060A (en) * | 2019-10-10 | 2019-12-20 | 襄阳中和机电技术有限公司 | Pipeline type oil-coal co-combustion system |
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2012
- 2012-07-05 CN CN201210232647.8A patent/CN102748855B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010101599A (en) * | 2008-10-27 | 2010-05-06 | Birumen Kagoshima:Kk | Hybrid hot air device |
| CN201539967U (en) * | 2009-09-30 | 2010-08-04 | 武汉三联节能环保工程有限公司 | Energy-saving circulated air heat-insulating type hot blast stove |
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| CN201764817U (en) * | 2010-09-06 | 2011-03-16 | 鄯善华恒实业有限责任公司 | Fire-barrier beam of industrial tunnel kiln |
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Owner name: ZHONGZHI ENERGY-SAVING ENVIRONMENTAL PROTECTION CO Free format text: FORMER OWNER: MCC ENGINEERING TECHNOLOGY CO., LTD. CHINA JINGYE ENGINEERING CORPORATION LIMITED Effective date: 20140715 |
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Effective date of registration: 20140715 Address after: 100088 Beijing city Haidian District Xitucheng Road No. 33 Applicant after: MCC Central Research Institute of Building and Construction Co., Ltd. Applicant after: Zhong Ye energy-conserving and environment-protective limited liability company Applicant after: China Jingye Engineering Technology Co., Ltd. Address before: 100088 Beijing city Haidian District Xitucheng Road No. 33 Applicant before: MCC Central Research Institute of Building and Construction Co., Ltd. Applicant before: MCC Engineering Technology Co., Ltd. Applicant before: China Jingye Engineering Technology Co., Ltd. |
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