CN202927882U - Cold state ignition device for low-emission boiler - Google Patents
Cold state ignition device for low-emission boiler Download PDFInfo
- Publication number
- CN202927882U CN202927882U CN 201220637015 CN201220637015U CN202927882U CN 202927882 U CN202927882 U CN 202927882U CN 201220637015 CN201220637015 CN 201220637015 CN 201220637015 U CN201220637015 U CN 201220637015U CN 202927882 U CN202927882 U CN 202927882U
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- boiler
- ignition
- zone
- low
- reburning
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Abstract
The utility model relates to a cold state ignition device for a low-emission boiler, comprising an active coke preparation furnace, wherein an ignition gas delivery pipe and a reburning gas delivery pipe are arranged at the upper end of the active coke preparation furnace, an outlet of the ignition gas delivery pipe is arranged at the position of an igniting gun, the igniting gun is arranged at the position, close to an entrance of a boiler main combustion zone, of a primary air coal dust mixture pipeline, the boiler comprises the boiler main combustion zone, a boiler reburning zone and a boiler burn-out zone, and the reburning gas delivery pipe is communicated with the boiler reburning zone. The igniting gun ignites combustible gas generated by the active coke preparation furnace, the ignition temperature of the gas fuel is low, the required ignition heat is low, quick fire catching is realized, coal dust gas flow can be rapidly ignited, meanwhile the cold state ignition device can realize the purpose of low emission of nitric oxide, and the denitration efficiency can reach 45 percent-65 percent.
Description
Technical field
The utility model relates to a kind of device that utilizes byproduct in activated coke preparation to carry out ignition of the boiler and denitration by refueling.
Background technology
Along with the development of Chinese national economy, the demand of the energy is increased day by day, and petroleum resources have been verified limited amount in China.At present, China all will spend a large amount of foreign exchange Imported oils every year.Power industry is the rich and influential family of fuel consume, according to electric power statistics in recent years: the Coal-fired group accounts for 74.8% of total installation of generating capacity, with approximately 2,330,000 tons of oil masses, account for 31.9% of total use oil mass, combustion-supporting, stable combustion oil when being mainly ignition of the boiler use oil and underrun.In order to reduce the consumption of petroleum resources, greatly develop thermal power plant's fuel-economizing new technology extremely urgent.
Though at present popular plasma ignition device be non-oil ignition, but complex structure, cost are higher, and easily wearing and tearing, slagging scorification in combustion barrel of coal dust, make the increase of breeze airflow flow resistance, are unfavorable for safe operation.Because of the plasma generator Power Limitation, when burning meager coal and anthracite, be difficult for igniting, combustion instability.
Simultaneously, can produce a large amount of oxides of nitrogen gas in thermal power plant's combustion process.Oxides of nitrogen gas not only stimulates people's respiratory system, and the infringement animals and plants damage the ozone layer, and are to cause one of greenhouse effects, acid rain and photochemically reactive main matter.Controlling the oxides of nitrogen gas Production and emission is significant.
In addition, can produce a large amount of fuel gas in the activated coke preparation process, be mainly the mist of carbon monoxide, hydrogen and methane, calorific value is higher.This part fuel gas is realized recycling, can obtain larger economic benefit.
Therefore, need a kind of new equipment in order to the grease gun igniting that replaces existing consumption great amount of fuel oil and cost is higher, baroque plasma ignition device, and can realize the nitrogen oxide low emission, and take full advantage of the byproduct that produces in the activated coke preparation process, realize recycling.
Summary of the invention
The purpose of this utility model is to provide a kind of device of low emission boiler cold-state igniting, can not only realize the device of non-oil ignition, in order to the grease gun igniting that replaces existing consumption great amount of fuel oil and cost is higher, baroque plasma ignition device, and can realize the nitrogen oxide low emission, and take full advantage of the byproduct that produces in the activated coke preparation process.
The technical scheme that the utility model is taked is:
A kind of device of low emission boiler cold-state igniting, comprise that activated coke prepares stove, activated coke prepares furnace upper end and is provided with ignition gas carrier pipe and combustion gas body carrier pipe again, ignition gas carrier pipe outlet is located at the burning torch place, burning torch be located at a wind coal dust intermixture pipeline near entering place, boiler primary zone, boiler divides boiler primary zone, boiler reburning zone, boiler combustion exhausted district, then combustion gas body carrier pipe communicates with the boiler reburning zone.
A described wind coal dust intermixture pipeline overcoat has the Secondary Air pipeline.
What the utility model burning torch was lighted is that activated coke prepares the fuel gas that stove produces, the ignition temperature of gaseous fuel is low, required ignition heat is little, can quick ignition, breeze airflow ignites rapidly, make the timely stable ignition of breeze airflow, during especially for burning meager coal, anthracite, can realize that rapid-ignition starts.And the utility model is compared with grease gun igniting and plasma ignition device, and burning torch is common electricity sparking, and simple in structure, security is good.
The utility model can be realized suppressing in the stove combustion process and the nitrogen oxides reduction discharging.On the one hand, do not affect catch fire and the prerequisite of coal dust drying under, because the ignition heat of gaseous fuel is less, can suitably reduce the wind wind-warm syndrome one time, can obviously reduce the discharge capacity of thermal NO.On the other hand, then the combustion gas body passes into burner hearth reburning zone II by combustion gas body pipeline again, forms reducing atmosphere at excess air coefficient under less than 1 condition, makes reduction of nitrogen oxide, realizes denitration by refueling.And, for subduing of nitrogen oxide, the gaseous fuel that hydrogen atoms is many is better than solid fuel, the fuel that the fuel ratio volatile matter that volatile matter is high is low is good, in fuel gas, the hydrogen atoms amount is many, and the nitrogen-atoms amount is few, therefore, the utility model can be realized the purpose of nitrogen oxide low emission, and denitration efficiency can reach 45% ~ 65%.
Description of drawings
Fig. 1 is the structural representation of the device of the utility model low emission boiler cold-state igniting.
Wherein: 1, activated coke prepares stove, and 2, combustion gas body carrier pipe again, 3, the ignition gas carrier pipe, 4, wind coal dust intermixture pipelines, 5, the Secondary Air pipeline, 6, burning torch, I, boiler combustion exhausted district, II, boiler reburning zone, III, boiler primary zone.
The specific embodiment
Further illustrate below in conjunction with accompanying drawing.
A kind of device of low emission boiler cold-state igniting, comprise that activated coke prepares stove 1, activated coke prepares stove 1 upper end and is provided with ignition gas carrier pipe 3 and combustion gas body carrier pipe 2 again, ignition gas carrier pipe 3 outlet is located at burning torch 6 places, burning torch 6 be located at a wind coal dust intermixture pipeline 4 near entering place, boiler primary zone, boiler divides boiler primary zone III, boiler reburning zone II, boiler combustion exhausted district I, then combustion gas body carrier pipe 2 communicates with boiler reburning zone II.One time wind coal dust intermixture pipeline 4 overcoats have Secondary Air pipeline 5.
Prepare stove 1 gas out from activated coke and be divided into two parts, a part is ignition gas, account for 75% ~ 85% of total gas, enter burner by ignition gas carrier pipe 3, ignition gas carrier pipe 3 is arranged in wind pulverized coal channel 4, the ignition gas of ejection is lighted by burning torch 6, and the breeze airflow that ignites rapidly after gas ignition is realized starting fast.Secondary Air mixes with the air-flow that catches fire in boiler primary zone III by Secondary Air pipeline 5, guarantees that coal dust fully burns.Another part is combustion gas body again, accounts for 15% ~ 25% of total gas, enters boiler reburning zone II by combustion gas body carrier pipe 2 again, forms reducing atmosphere at excess air coefficient under less than 1 condition, makes reduction of nitrogen oxide, realizes denitration by refueling.
Utilize activated coke to prepare that byproduct is lighted a fire and denitration by refueling method and device carry out the boiler cold-state ignition trigger, not only can start rapidly, simple in structure, security is good, the more important thing is and to save a large amount of fuel oils, reduce the consumption of petroleum resources, can also control the discharging of nitrogen oxide and realize recycling simultaneously, significant.
Claims (2)
1. the device of low emission boiler cold-state igniting, it is characterized in that, comprise that activated coke prepares stove, activated coke prepares furnace upper end and is provided with ignition gas carrier pipe and combustion gas body carrier pipe again, ignition gas carrier pipe outlet is located at the burning torch place, burning torch be located at a wind coal dust intermixture pipeline near entering place, boiler primary zone, boiler divides boiler primary zone, boiler reburning zone, boiler combustion exhausted district, then combustion gas body carrier pipe communicates with the boiler reburning zone.
2. the device of a kind of low emission boiler cold-state igniting according to claim 1, is characterized in that, a described wind coal dust intermixture pipeline overcoat has the Secondary Air pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220637015 CN202927882U (en) | 2012-11-28 | 2012-11-28 | Cold state ignition device for low-emission boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220637015 CN202927882U (en) | 2012-11-28 | 2012-11-28 | Cold state ignition device for low-emission boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927882U true CN202927882U (en) | 2013-05-08 |
Family
ID=48217841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220637015 Withdrawn - After Issue CN202927882U (en) | 2012-11-28 | 2012-11-28 | Cold state ignition device for low-emission boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202927882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980205A (en) * | 2012-11-28 | 2013-03-20 | 山东大学 | Technology and device for cold-state ignition of low-emission boiler |
| CN105333421A (en) * | 2015-11-26 | 2016-02-17 | 王立臣 | Non-air-conveying powdered fuel oxygen-rich combustion device and method |
-
2012
- 2012-11-28 CN CN 201220637015 patent/CN202927882U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980205A (en) * | 2012-11-28 | 2013-03-20 | 山东大学 | Technology and device for cold-state ignition of low-emission boiler |
| CN105333421A (en) * | 2015-11-26 | 2016-02-17 | 王立臣 | Non-air-conveying powdered fuel oxygen-rich combustion device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130508 Effective date of abandoning: 20141008 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130508 Effective date of abandoning: 20141008 |
|
| RGAV | Abandon patent right to avoid regrant |