CN101598335A - Controllable air film bilateral strong preheat pulverized coal combustion device - Google Patents
Controllable air film bilateral strong preheat pulverized coal combustion device Download PDFInfo
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- CN101598335A CN101598335A CNA2009100254613A CN200910025461A CN101598335A CN 101598335 A CN101598335 A CN 101598335A CN A2009100254613 A CNA2009100254613 A CN A2009100254613A CN 200910025461 A CN200910025461 A CN 200910025461A CN 101598335 A CN101598335 A CN 101598335A
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- air
- pulverized coal
- expansion chamber
- sudden expansion
- fire
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The present invention relates to a kind of controllable air film bilateral strong preheat pulverized coal combustion puts, this device has the pulverized coal channel of a tubulose to communicate with burner hearth, at the place, burner nozzle chamber that pulverized coal channel and burner hearth join, back of the body fire one side at burner hearth, be provided with the sudden expansion chamber that enlarges to a side, on the sidewall in sudden expansion chamber, having can be by the air film air regulator mouth of air film wind, periphery in the sudden expansion chamber, be wrapped in by shell and be formed with air compartment, the porch of air compartment is provided with air quantity actuator and volume adjusting apparatus, and it can regulate the ventilation in sudden expansion chamber.This device can make the side coal dust that warms oneself in front of a fire catch fire in advance, and preheating back-fire side breeze airflow, but the burning of efficient hardening coal dust improves efficiency of combustion; Can extensively strengthen the applicability of boiler coal, be extensive use of different coals.
Description
Technical field
The present invention relates to a kind of wide in range suitable coal powder burner, a kind of controllable air film bilateral strong preheat pulverized coal combustion device.
Background technology
Present many power plant are because reality uses coal to change greatly, ature of coal is relatively poor, volatile content is low, content of ashes is big, what have differs greatly with design coal, in power plant's normal course of operation, cause catch fire postponement, burn deterioration easily, even cause contingencies such as " fire extinguishing are blown out ", influence safe operation of power plant.The ature of coal difference can cause also that efficiency of combustion is low, unburned carbon in flue dust or big slag phosphorus content is too high, pollutant emission exceeds standard, and also needs fuel oil combustion-supporting sometimes, influence the economy that power plant moves.
Summary of the invention
In order to address the above problem, the present invention provides a kind of wide in range suitable coal powder burner, controllable air film bilateral strong preheat pulverized coal combustion device; This device is primarily aimed at the problems referred to above to be increased the coal dust scope of application, strengthening fire burns, improves efficiency of combustion, improves the low-load combustion-stabilizing performance, reduces pollutant emission, reduces contingency etc.; This device adopts bilateral strengthening preheating mode in addition, is specially adapted to the unburnable coal of many ashes, low-volatile.Use this burner and can bring suitable economic and social benefit for power plant.
The technical solution adopted for the present invention to solve the technical problems is: this device is by pulverized coal channel, chamber, burner nozzle chamber, and the sudden expansion chamber, air compartment, actuator and volume adjusting apparatus are formed; It is characterized in that: this device has the pulverized coal channel of a tubulose to communicate with burner hearth, at the place, burner nozzle chamber that pulverized coal channel and burner hearth join, back of the body fire one side at burner hearth is provided with the sudden expansion chamber that enlarges to a side, on the sidewall in sudden expansion chamber, having can be by the air film air regulator mouth of air film wind, periphery in the sudden expansion chamber is wrapped in by shell and is formed with air compartment, the porch of air compartment, be provided with air quantity actuator and volume adjusting apparatus, it can regulate the ventilation in sudden expansion chamber.
Its theory of combustion is: one time the wind breeze airflow enters the burner nozzle chamber and sprays into the burner hearth burning along pipeline, wind pulverized coal channel of its inlet side of waring oneself in front of a fire, pulverized coal borne air flow is along waring oneself in front of a fire the parallel burner hearth that sprays into of side, and the side flame preheating of being warmd oneself in front of a fire at the spout place makes it conflagration; And air film sudden expansion chamber is set at back-fire side, the furnace high-temperature flue gas is entrainmented with pressure in this sudden expansion chamber, this high-temperature flue gas enters inside, burner nozzle chamber by the outside to be mixed with the back-fire side pulverized coal borne air flow, so that a wind breeze airflow at this place is carried out peheat force and overheavy firing.The back of the body of burner, the both sides that the warm oneself in front of a fire preheating that all strengthened like this, thus burner is caught fire in advance and flameholding.Because this sudden expansion chamber arranged outside air film air regulator mouth, force to entrainment enter this sudden expansion chamber the furnace high-temperature flue gas not only arranged, also have the cold wind in the outside, burner nozzle chamber, this cold wind flows along wall and forms air film wind.Therefore what of exhaust gas volumn are size that can be by regulating air film wind air quantity entrainment with control, make it to adapt to the variation of coal; This air film wind also can cool off to prevent that spout is by scaling loss the spout wall simultaneously.
Its beneficial effect is: this device can make the side coal dust that warms oneself in front of a fire catch fire in advance, and preheating back-fire side breeze airflow, but the burning of efficient hardening coal dust improves efficiency of combustion; Can extensively strengthen the applicability of boiler coal, be extensive use of different coals.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing;
Accompanying drawing is a structural representation of the present invention;
1. pulverized coal channels among the figure, 2. burner nozzle chamber, 3. sudden expansion chamber, 4. air film air regulator mouth, 5. air compartment, 6. actuator, 7. volume adjusting apparatus.
The specific embodiment
This installs by pulverized coal channel 1, chamber, burner nozzle chamber 2, and sudden expansion chamber 3, air compartment 5, actuator 6 and volume adjusting apparatus 7 are formed; It is characterized in that: this device has the pulverized coal channel 1 of a tubulose to be connected with burner hearth, at 2 places, burner nozzle chamber that pulverized coal channel 1 and burner hearth join, back of the body fire one side at burner hearth is provided with the sudden expansion chamber 3 that enlarges to a side, on the sidewall in sudden expansion chamber 3, having can be by the air film air regulator mouth 4 of air film wind, periphery in sudden expansion chamber 3 is wrapped in by shell and forms air compartment 5, the porch of air compartment 5, be provided with air quantity actuator 6 and volume adjusting apparatus 7, it can regulate the ventilation in sudden expansion chamber.
Its theory of combustion is: one time the wind breeze airflow enters burner nozzle chamber 2 and sprays into the burner hearth burning along pulverized coal channel, its wind pulverized coal channel 1 side of waring oneself in front of a fire, pulverized coal borne air flow is along waring oneself in front of a fire the parallel burner hearth that sprays into of side, and the side flame preheating of being warmd oneself in front of a fire at the spout place makes it conflagration; And air film sudden expansion chamber 3 is set at back-fire side, and will force to entrainment the furnace high-temperature flue gas, this high-temperature flue gas is entered by the outside and mixes with the back-fire side pulverized coal borne air flow in the burner nozzle chamber 2, and the wind breeze airflow at this place is carried out peheat force and overheavy firing.The back of the body of burner, the both sides that the warm oneself in front of a fire preheating that all strengthened like this, thus burner is caught fire in advance and flameholding.Because these sudden expansion chamber 3 arranged outside air film air regulator mouths, force to entrainment enter this sudden expansion chamber the furnace high-temperature flue gas not only arranged, also have the cold wind in 2 outsides, burner nozzle chamber, this cold wind flows along wall and forms air film wind.Therefore what of exhaust gas volumn are size that can be by regulating air film wind air quantity entrainment with control, make it to adapt to the variation of coal; This air film wind also can cool off to prevent that spout is by scaling loss the spout wall simultaneously.
Claims (1)
1. controllable air film bilateral strong preheat pulverized coal combustion device, this installs by pulverized coal channel (1), chamber, burner nozzle chamber (2), sudden expansion chamber (3), and air compartment (5), actuator (6) and volume adjusting apparatus (7) are formed; It is characterized in that: this device has the pulverized coal channel (1) of a tubulose to be connected with burner hearth, locate in the burner nozzle chamber (2) that pulverized coal channel (1) and burner hearth join, back of the body fire one side at burner hearth, be provided with the sudden expansion chamber (3) that enlarges to a side, on the sidewall in sudden expansion chamber (3), having can be by the air film air regulator mouth (4) of air film wind, periphery in sudden expansion chamber (3), be wrapped in by shell and form air compartment (5), the porch of air compartment (5), be provided with air quantity actuator (6) and volume adjusting apparatus (7), it can regulate the ventilation of sudden expansion chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100254613A CN101598335A (en) | 2009-03-08 | 2009-03-08 | Controllable air film bilateral strong preheat pulverized coal combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100254613A CN101598335A (en) | 2009-03-08 | 2009-03-08 | Controllable air film bilateral strong preheat pulverized coal combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101598335A true CN101598335A (en) | 2009-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2009100254613A Pending CN101598335A (en) | 2009-03-08 | 2009-03-08 | Controllable air film bilateral strong preheat pulverized coal combustion device |
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| CN (1) | CN101598335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563635A (en) * | 2012-01-10 | 2012-07-11 | 西安交通大学 | Pulverized coal flame preheating combustion device |
-
2009
- 2009-03-08 CN CNA2009100254613A patent/CN101598335A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563635A (en) * | 2012-01-10 | 2012-07-11 | 西安交通大学 | Pulverized coal flame preheating combustion device |
| CN102563635B (en) * | 2012-01-10 | 2013-12-11 | 西安交通大学 | Pulverized coal flame preheating combustion device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091209 |