CN102967047A - Coal dust hot-blast furnace - Google Patents

Coal dust hot-blast furnace Download PDF

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Publication number
CN102967047A
CN102967047A CN2012105543217A CN201210554321A CN102967047A CN 102967047 A CN102967047 A CN 102967047A CN 2012105543217 A CN2012105543217 A CN 2012105543217A CN 201210554321 A CN201210554321 A CN 201210554321A CN 102967047 A CN102967047 A CN 102967047A
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CN
China
Prior art keywords
pulverized coal
combustion chamber
burner
hot air
heater
Prior art date
Application number
CN2012105543217A
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Chinese (zh)
Inventor
姜贵利
张复利
Original Assignee
青岛海众环保锅炉股份有限公司
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Publication date
Application filed by 青岛海众环保锅炉股份有限公司 filed Critical 青岛海众环保锅炉股份有限公司
Priority to CN2012105543217A priority Critical patent/CN102967047A/en
Publication of CN102967047A publication Critical patent/CN102967047A/en

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Abstract

The invention provides a coal dust hot-blast furnace. The coal dust hot-blast furnace comprises a furnace body, an air blower, a dust-making burning system and an igniting system, wherein a lower combustion chamber, an upper combustion chamber, an air distributor, a mixed burn-out chamber and an external connection pipeline are arranged on the furnace body from bottom to top; the air blower is communicated with the furnace body; the dust-making burning system comprises coal dust preparing equipment, a coal dust conveying pipeline and a burner; the burner is arranged on the lower combustion chamber; the dust outlet of the coal dust preparing equipment is connected with the burner through the coal dust conveying pipeline; the igniting system comprises an oil pump and an igniting control box; the oil outlet of the oil pump is connected with the burner; and an igniter of the igniting control box is arranged in the burner. Coal dust can burn fully, so that the phenomena of coal leakage, emission of black smoke and the like are avoided, the burning efficiency is increased effectively, and the environmental pollution is lowered.

Description

Pulverized coal hot air furnace

Technical field

The present invention relates to hot-blast furnace equipment, relate in particular to a kind of pulverized coal hot air furnace.

Background technology

At present, the thermal source that uses in industries such as a large amount of chemical industry of China, potteries is coal-fired hot-blast stove or fuel-firing gas-firing hot-blast stove.China is big coal country, and coal-fired hot-blast stove is widely used, and it is combustion apparatus that coal-fired hot-blast stove adopts traveling-grate stoker commonly used in the boiler, coal leakage quantity is large, easy over-emitting black exhaust, and auxiliary device is many, floor space is large, causes the efficiency of combustion of coal-fired hot-blast stove lower, and environmental pollution is comparatively serious.

Summary of the invention

The invention provides a kind of pulverized coal hot air furnace, lower in order to solve in the prior art efficiency of combustion of coal-fired hot-blast stove, the defective that environmental pollution is comparatively serious realizes improving the efficiency of combustion of pulverized coal hot air furnace, alleviates the pulverized coal hot air furnace pollution on the environment.

The invention provides a kind of pulverized coal hot air furnace, comprise body of heater, air blast, powder process combustion system and ignition system; Described body of heater is provided with lower combustion chamber, combustion chamber, top, air register, mixing burning chamber and external pipe from the bottom to top; Described air blast is communicated with described body of heater; Described powder process combustion system comprises pulverized coal preparation equipment, coal dust feed-line and burner, and described burner is arranged on the described lower combustion chamber, and the meal outlet of described pulverized coal preparation equipment is connected with described burner by described coal dust feed-line; Described ignition system comprises oil pump and IGNITION CONTROL case, and the oil-out of described oil pump is connected with described burner, and the igniter of described IGNITION CONTROL case is arranged in the described burner.

Aforesaid pulverized coal hot air furnace, the bottom of described lower combustion chamber are funnel structure, and the lower end of described funnel structure is provided with except cinder notch, and the described cinder notch that removes is connected with slag remover.

Aforesaid pulverized coal hot air furnace, described body of heater also is enclosed with chuck outward, be connected with many jet pipes on the described body of heater, the import of described jet pipe is arranged in the cavity of described chuck and body of heater formation, described air blast is communicated with described cavity, and the outlet of many described jet pipes is communicated with described lower combustion chamber and combustion chamber, described top respectively.

Aforesaid pulverized coal hot air furnace, described jet pipe tilt and arrange down.

Aforesaid pulverized coal hot air furnace, the inwall of described body of heater is provided with LIFT, and described jet pipe is inserted in the described LIFT.

Aforesaid pulverized coal hot air furnace, described burner is connected with overfire air fan.

Aforesaid pulverized coal hot air furnace, described powder process combustion system also comprises coal bunker, described coal bunker is by conveyer and described pulverized coal preparation equipment connection.

Aforesaid pulverized coal hot air furnace also is provided with on the described air register be used to the YE of regulating described gas-distributing fan air inlet aperture.

Aforesaid pulverized coal hot air furnace is provided with flame detector, infrared radiation thermometer, fire box temperature thermocouple and combustion chamber draft table on the described lower combustion chamber.

Aforesaid pulverized coal hot air furnace is connected with the outlet temperature thermocouple on the described external pipe.

Pulverized coal hot air furnace provided by the invention is prepared into coal dust by pulverized coal preparation equipment with coal cinder, and delivers to burner by a wind that produces in the pulverized coal preparation equipment, cooperates with the Secondary Air of burner to be ejected in the lower combustion chamber; After lighting by ignition system, will smooth combustion in body of heater at coal dust; Lower combustion chamber, combustion chamber, top are by two sections eddy flow wind of air blast configuration, and eddy flow wind enters in the body of heater through the jet pipe that is in tilted layout, and forms the eddy flow tertiary air; Top is provided with air register above the combustion chamber, regulates the air inlet aperture by YE and allocates cold air into, regulates hot blast temperature; Last mixed hot blast heats through entering in other equipment by external pipe after mixing burning chamber and fully burning, can realize abundant burning owing to adopt coal dust, avoid occurring leaking the phenomenons such as coal and over-emitting black exhaust, effectively raise efficiency of combustion, alleviated pollution on the environment.Wherein, be provided with slag remover below the lower combustion chamber, can realize continuous slagging-off; In addition, this hot-blast stove disposes perfect ignition system and monitoring system, and monitoring system is carried out flame monitoring, thermometric, pressure measurement etc. in combustion process, can realize on-line monitoring, regulate air quantity and temperature, and automaticity is high, and labour intensity is low.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the structural representation of pulverized coal hot air furnace embodiment of the present invention;

Fig. 2 is the local enlarged diagram of a-quadrant among Fig. 1.

The specific embodiment

For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

Such as Fig. 1-shown in Figure 2, the present embodiment pulverized coal hot air furnace comprises body of heater 1, air blast 2, powder process combustion system 3 and ignition system 4; Body of heater 1 is provided with from the bottom to top lower combustion chamber 11, combustion chamber, top 12, air register 13, mixes burning chamber 14 and external pipe 15; Air blast 2 is communicated with body of heater 1; Powder process combustion system 3 comprises pulverized coal preparation equipment 31, coal dust feed-line 32 and burner 33, and burner 33 is arranged on the lower combustion chamber 11, and the meal outlet of pulverized coal preparation equipment 31 is connected with burner 33 by coal dust feed-line 32; Ignition system 4 comprises oil pump 41 and IGNITION CONTROL case 42, and the oil-out of oil pump 41 is connected with burner 33, and the igniter 421 of IGNITION CONTROL case 42 is arranged in the burner 33.

Particularly, pulverized coal preparation equipment 31 can adopt Coal-disintegrating machine or boiler coal-ash preparation system, and pulverized coal preparation equipment 31 generates coal dust with colliery processing, and a wind in the pulverized coal preparation equipment 31 is sent to coal dust in the burner 33 by coal dust feed-line 32.Oil pump 41 in the ignition system 4 injects fuel oil in burner 33, and by 421 igniting of IGNITION CONTROL case 42 control point firearms, realization is lighted coal dust and burnt in lower combustion chamber 11.Air blast 2 injects air in body of heater 1, coal dust is fully burnt in lower combustion chamber 11 and combustion chamber, top 12, the flue gas of the burning of 12 outputs fully passes through external pipe 15 with hot blast after the burning with the cold air that air register 13 is allocated into during mixing burning chamber 14 from the combustion chamber, top, and air register 13 is allocated the temperature that cold air can be regulated the hot blast of control output into.Wherein, the bottom of lower combustion chamber 11 is funnel structure 111, and the lower end of funnel structure 111 is provided with except cinder notch (not shown), except cinder notch is connected with slag remover 112.In order to control the intake of air register 13, also be provided with on the air register 13 for the YE 131 of regulating gas-distributing fan 13 air inlet apertures.Running status for convenient monitoring present embodiment pulverized coal hot air furnace is provided with flame detector 51, infrared radiation thermometer 52, fire box temperature thermocouple 54 and combustion chamber draft table 53 on the lower combustion chamber 11.In addition, be connected with outlet temperature thermocouple 55 on the external pipe 15.

Further, in order in lower combustion chamber 11 and combustion chamber, top 12, to form eddy flow wind so that coal dust fully burns, the body of heater 1 outer chuck 16 that also is enclosed with, be connected with many jet pipes 17 on the body of heater 1, the import of jet pipe 17 is arranged in the cavity of chuck 16 and body of heater 1 formation, air blast 2 is communicated with cavity, and the outlet of many jet pipes 17 is communicated with lower combustion chamber 11 and combustion chamber, top 12 respectively.Preferably, jet pipe 17 inclinations arrange down.Can obtain the stronger eddy flow wind of swirl strength by the jet pipe 17 that is obliquely installed, thereby guarantee that coal dust can burn more fully.Wherein, the inwall of body of heater 1 is provided with LIFT 18, and jet pipe 17 is inserted in the LIFT 18.That LIFT 18 has is high temperature resistant, the characteristic of high strength and high abrasion, the service life of improving the present embodiment pulverized coal hot air furnace.

Further, burner 33 is connected with overfire air fan 36.Concrete, overfire air fan 36 can make coal dust form being injected in the body of heater 1 of eddy flow, and coal dust can fully be burnt in body of heater 1.In addition, powder process combustion system 3 also comprises coal bunker 34, and coal bunker 34 is connected with pulverized coal preparation equipment 31 by conveyer 35.

Pulverized coal hot air furnace provided by the invention is prepared into coal dust by pulverized coal preparation equipment with coal cinder, and delivers to burner by a wind that produces in the pulverized coal preparation equipment, cooperates with the Secondary Air of burner to be ejected in the lower combustion chamber; After lighting by ignition system, will smooth combustion in body of heater at coal dust; Lower combustion chamber, combustion chamber, top are by two sections eddy flow wind of air blast configuration, and eddy flow wind enters in the body of heater through the jet pipe that is in tilted layout, and forms the eddy flow tertiary air; Top is provided with air register above the combustion chamber, regulates the air inlet aperture by YE and allocates cold air into, regulates hot blast temperature; Last mixed hot blast heats through entering in other equipment by external pipe after mixing burning chamber and fully burning, can realize abundant burning owing to adopt coal dust, avoid occurring leaking the phenomenons such as coal and over-emitting black exhaust, effectively raise efficiency of combustion, alleviated pollution on the environment.Wherein, be provided with slag remover below the lower combustion chamber, can realize continuous slagging-off; In addition, this hot-blast stove disposes perfect ignition system and monitoring system, and monitoring system is carried out flame monitoring, thermometric, pressure measurement etc. in combustion process, can realize on-line monitoring, regulate air quantity and temperature, and automaticity is high, and labour intensity is low.

It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (10)

1. a pulverized coal hot air furnace is characterized in that, body of heater, air blast, powder process combustion system and ignition system; Described body of heater is provided with lower combustion chamber, combustion chamber, top, air register, mixing burning chamber and external pipe from the bottom to top; Described air blast is communicated with described body of heater; Described powder process combustion system comprises pulverized coal preparation equipment, coal dust feed-line and burner, and described burner is arranged on the described lower combustion chamber, and the meal outlet of described pulverized coal preparation equipment is connected with described burner by described coal dust feed-line; Described ignition system comprises oil pump and IGNITION CONTROL case, and the oil-out of described oil pump is connected with described burner, and the igniter of described IGNITION CONTROL case is arranged in the described burner.
2. pulverized coal hot air furnace according to claim 1 is characterized in that, the bottom of described lower combustion chamber is funnel structure, and the lower end of described funnel structure is provided with except cinder notch, and the described cinder notch that removes is connected with slag remover.
3. pulverized coal hot air furnace according to claim 1, it is characterized in that, described body of heater also is enclosed with chuck outward, be connected with many jet pipes on the described body of heater, the import of described jet pipe is arranged in the cavity of described chuck and body of heater formation, described air blast is communicated with described cavity, and the outlet of many described jet pipes is communicated with described lower combustion chamber and combustion chamber, described top respectively.
4. pulverized coal hot air furnace according to claim 3 is characterized in that, described jet pipe tilts and arranges down.
5. pulverized coal hot air furnace according to claim 3 is characterized in that, the inwall of described body of heater is provided with LIFT, and described jet pipe is inserted in the described LIFT.
6. pulverized coal hot air furnace according to claim 1 is characterized in that, described burner is connected with overfire air fan.
7. pulverized coal hot air furnace according to claim 1 is characterized in that, described powder process combustion system also comprises coal bunker, and described coal bunker is by conveyer and described pulverized coal preparation equipment connection.
8. pulverized coal hot air furnace according to claim 1 is characterized in that, also is provided with on the described air register be used to the YE of regulating described gas-distributing fan air inlet aperture.
9. pulverized coal hot air furnace according to claim 1 is characterized in that, is provided with flame detector, infrared radiation thermometer, fire box temperature thermocouple and combustion chamber draft table on the described lower combustion chamber.
10. pulverized coal hot air furnace according to claim 1 is characterized in that, is connected with the outlet temperature thermocouple on the described external pipe.
CN2012105543217A 2012-12-19 2012-12-19 Coal dust hot-blast furnace CN102967047A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135671A (en) * 2015-09-10 2015-12-09 河南陆德筑机股份有限公司 Multistage air distribution pulverized coal combustion hot blast stove

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103477A (en) * 1993-11-27 1995-06-07 四川省威远县天府陶瓷建筑材料实业公司 Hot-air furnace for drying tower and burning technique thereof
CN2802284Y (en) * 2005-06-09 2006-08-02 贾林喜 Compound pulverized-fuel furnace
CN201032342Y (en) * 2007-04-24 2008-03-05 黄拥军 Raw material drying combination type dusting furnace
CN202057036U (en) * 2011-01-28 2011-11-30 泰安立人选煤工程有限公司 Coal powder air heating furnace
CN202229172U (en) * 2011-07-27 2012-05-23 辽宁合百意生物质技术开发有限公司 Automatic biomass fuel feed combustion furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103477A (en) * 1993-11-27 1995-06-07 四川省威远县天府陶瓷建筑材料实业公司 Hot-air furnace for drying tower and burning technique thereof
CN2802284Y (en) * 2005-06-09 2006-08-02 贾林喜 Compound pulverized-fuel furnace
CN201032342Y (en) * 2007-04-24 2008-03-05 黄拥军 Raw material drying combination type dusting furnace
CN202057036U (en) * 2011-01-28 2011-11-30 泰安立人选煤工程有限公司 Coal powder air heating furnace
CN202229172U (en) * 2011-07-27 2012-05-23 辽宁合百意生物质技术开发有限公司 Automatic biomass fuel feed combustion furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135671A (en) * 2015-09-10 2015-12-09 河南陆德筑机股份有限公司 Multistage air distribution pulverized coal combustion hot blast stove
CN105135671B (en) * 2015-09-10 2017-10-13 河南陆德筑机股份有限公司 A kind of many level air-distribution coal dust firing hot-blast stoves

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