CN202453343U - Boiler furnace combustion optimization device - Google Patents
Boiler furnace combustion optimization device Download PDFInfo
- Publication number
- CN202453343U CN202453343U CN2012200290072U CN201220029007U CN202453343U CN 202453343 U CN202453343 U CN 202453343U CN 2012200290072 U CN2012200290072 U CN 2012200290072U CN 201220029007 U CN201220029007 U CN 201220029007U CN 202453343 U CN202453343 U CN 202453343U
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- China
- Prior art keywords
- boiler
- optimization device
- carbon dioxide
- boiler furnace
- flue
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- Expired - Lifetime
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Abstract
The utility model provides a boiler furnace combustion optimization device which comprises an oxygen content monitoring probe arranged in a flue at an outlet of a boiler economizer, and is characterized in that at least one carbon dioxide monitoring transmitter is arranged in the flue at the outlet of the boiler economizer. The boiler furnace combustion optimization device has the advantages that combustion conditions during combustion processes and in control furnaces can be monitored accurately, the device is simple, and the cost is low.
Description
Technical field
The utility model relates to a kind of boiler furnace burning optimization device.
Background technology
At present large-sized station boiler all is provided with a plurality of oxygen amount monitoring probes that are arranged on the economizer downstream direction in its flue gas flow, and the data of its continuous coverage are used for the burning control in the boiler central station of floating dock, and crosses in the oxygen amount and to report to the police when low.These oxygen amount probes are represented the oxygen amount concentration value of burner hearth different parts, and can increase and decrease the adjusting excess air in view of the above, yet, all answers that the oxygen concentration in the flue gas that probe monitors can not solve the firing space behavior optimization problem.For example, the oxygen concentration that monitors of popping one's head in possibly cause owing to boiler seal air tight or the viewport place bleeds, and this part air does not belong to the required air of burning and combustion process has nothing to do, but can cause that the burning adjusting is unbalance; On the other hand, with the burner hearth regional area, one time the wind pulverized coal channel supplies the difference of powder inequality and pulverized coal particle degree or when oxygen is not enough, can cause rough burning and uncompleted burned carbon to increase in burner.
In order to monitor combustion process and control stove internal combustion operating mode accurately; Usually adopt carbonmonoxide detector, because in combustion of fossil fuel, produce carbon monoxide and explain that then combustion air is not enough; Carbon monoxide also can occur in the flue gas under some peculiar situation; Bad like the fuel-air mixing, the coal grain is thick excessively, firing delay and the still imperfect combustion and hurried cooling of coal grain or the like.Moreover, along flue gas flow the way that a plurality of carbon monoxide detector arrays are controlled burning being set, operation and the cost of safeguarding are too big again.
Summary of the invention
The purpose of the utility model provides a kind of boiler furnace burning optimization device, optimizes stove internal combustion situation through the way of gas concentration lwevel in the monitoring flue gas.
In order to achieve the above object; The utility model provides a kind of boiler furnace burning optimization device; Comprise the oxygen amount monitoring probe that is arranged in the flue of boiler economizer exit, it is characterized in that, also be provided with at least one carbon dioxide monitoring transmitter in the flue of described boiler economizer exit.
Preferably, described oxygen amount monitoring probe is connected computing machine with the carbon dioxide monitoring transmitter.
The utility model has the advantages that: can monitor combustion process and control stove internal combustion operating mode accurately, equipment is simple, cost is low.
Description of drawings
Fig. 1 is the coal-fired power station boiler structural representation.
Embodiment
Specify the utility model below in conjunction with embodiment.
Embodiment
As shown in Figure 1, be the coal-fired power station boiler structural representation, described coal-fired power station boiler is by burner hearth 1, burner 2; Economizer 3, air preheater 4, primary air fan 5, coal pulverizer outlet divider 6; Coal pulverizer 7, induced draft fan 8, electrostatic precipitator 9; Chimney 10, carbon dioxide transmitter 11, pressure fan 12 is formed with oxygen amount monitoring probe 13.The oxygen amount monitoring probe 13 that is arranged in the boiler economizer 3 exit flues constitutes boiler furnace burning optimization device with carbon dioxide monitoring transmitter 11, and described oxygen amount monitoring probe 13 is connected computing machine with carbon dioxide monitoring transmitter 11.
It is coal-fired after coal pulverizer 7 pulverizes; Be sent to the burner 2 that is provided with on each burner hearth 1 through primary air fan 5 through coal pulverizer 7 outlet dividers; The flue gas that the stove internal combustion produces through the heating surfaces at different levels of burner hearth 1 top and back-end ductwork and economizer 3 back in air preheater 4 and the air of entering burner hearth 1 carry out heat exchange; Hot-air is sent into the burner 2 secondary air pipelines of burner hearth 1 by pressure fan 12; Constitute combustion air with wind, and flue gas is purified through fly-ash separators 9 by induced draft fan 8 suctions and removes flue dust and enter atmosphere by chimney again.Because coal pulverizer outlet divider is inhomogeneous to the powder feeding of each burner, and the coal powder size that coal pulverizer is milled is also variant in each burner, the imbalance that makes the development of boiler stove internal combustion operating mode.(figure is last only to show one on economizer 3 exhaust pass, to add the carbon dioxide transmitter; Also should there be one on the opposite side flue); Can monitor out the concentration of carbon dioxide in the flue gas, and be transformed into electric signal, send into the computer program of burning control: (1) is the carbon dioxide values of both sides flue relatively; The burning that the burner hearth both sides then are described if any deviation is uneven, can utilize such as the means of finely tuning secondary air in the hope of balance; (2), calculate maximum amount of carbon dioxide according to following formula:
In the formula, CO
2MAXBe the amount of carbon dioxide of maximum, CO
2Be the amount of carbon dioxide that carbon dioxide monitoring transmitter 11 records, CO is the amount of the carbon monoxide that records, because the large-sized boiler CO content is very little, in the calculating
Can ignore O
2The oxygen amount that records for oxygen amount monitoring probe 13.Do comparison with measured value, if the CO that aforementioned calculation obtains
2MAXThan measured value little 6% or more than, explain that the oxygen content measurement value is bigger than normal, might be that for example air-heater leakage causes, can further check to reduce Luo Feng loss, improve the unit efficiency.
Also can utilize this system to have the function of measuring carbon dioxide in the flue gas for the boiler unit that online flue gas analysis system (CEMS) is housed; And measured value can be adorned and is changed to electric signal output; Just need not increase the carbon dioxide transmitter; Also can realize the purpose of the utility model, realize boiler combustion optimization.
Claims (2)
1. boiler furnace burning optimization device; Comprise the oxygen amount monitoring probe (13) that is arranged in the flue of boiler economizer (3) exit; It is characterized in that, also be provided with at least one carbon dioxide monitoring transmitter (11) in the flue of described boiler economizer (3) exit.
2. boiler furnace burning optimization device as claimed in claim 1 is characterized in that, described oxygen amount monitoring probe (13) is connected computing machine with carbon dioxide monitoring transmitter (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200290072U CN202453343U (en) | 2012-01-29 | 2012-01-29 | Boiler furnace combustion optimization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200290072U CN202453343U (en) | 2012-01-29 | 2012-01-29 | Boiler furnace combustion optimization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453343U true CN202453343U (en) | 2012-09-26 |
Family
ID=46869198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200290072U Expired - Lifetime CN202453343U (en) | 2012-01-29 | 2012-01-29 | Boiler furnace combustion optimization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453343U (en) |
-
2012
- 2012-01-29 CN CN2012200290072U patent/CN202453343U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |