CN207169949U - One kind utilizes heat primary air waste heat control coal pulverizer import temperature system of blast - Google Patents
One kind utilizes heat primary air waste heat control coal pulverizer import temperature system of blast Download PDFInfo
- Publication number
- CN207169949U CN207169949U CN201720728288.3U CN201720728288U CN207169949U CN 207169949 U CN207169949 U CN 207169949U CN 201720728288 U CN201720728288 U CN 201720728288U CN 207169949 U CN207169949 U CN 207169949U
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- China
- Prior art keywords
- heat
- coal pulverizer
- branch pipe
- hot blast
- primary air
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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
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Abstract
The utility model discloses one kind using heat primary air waste heat control coal pulverizer import temperature system of blast, including air preheater, main pipe road, tail flue gas flue, heat-exchanger rig, it is some enter coal pulverizer hot blast manifold, exchange heat branch pipe；The heat exchange branch pipe is connected on hot blast main pipe road, and the heat-exchanger rig is arranged on heat exchange branch pipe, and in tail flue gas flue, it is described enter coal pulverizer hot blast manifold be arranged on hot blast main pipe road, moved towards according to heat primary air, enter coal pulverizer hot blast manifold rear, heat exchange branch pipe is preceding.The beneficial effects of the utility model：It can largely reduce cold primary air flow, strengthen air preheater exchange capability of heat, reduce exhaust gas temperature, improve stove effect, reduce coal consumption, energy-saving effect is obvious, safety and environmental protection and does not influence stable operation of unit.
Description
Technical field
A kind of system for adjusting wind-warm syndrome is the utility model is related to, more particularly to one kind is controlled using heat primary air waste heat
Coal pulverizer import temperature system of blast.
Background technology
Coal pulverizer is by coal crusher and wears into the machinery of coal dust, and it is the important auxiliary equipment of coal-powder boiler.
Coal pulverizer in operation, to ensure ventilation and drying capacity, it is necessary to which pulverizer outlet temperature is maintained into permission
In the range of, outlet wind-warm syndrome need to be strictly controlled, therefore the heat primary air for being sent into coal pulverizer needs to add cold First air hybrid cooling.Add
The cold primary air flow entered is more, and the heat exchange amount of air preheater reduces, and exhaust gas temperature rise, boiler thermal output reduces.
Chimney white cigarette is eliminated by installing MGGH additional at present, but installing MGGH additional needs bigger investment for trnasforming urban land, furthermore
There is patent to carry out cooling heat transferring to heat primary air using condensate, reduce heat primary air temperature.But carried on the back for current coal mixing combustion
Under scape, the upper coal situation of point mill is universal, it is necessary to individually control each coal pulverizer import wind-warm syndrome.Therefore by controlling heat primary air
Branch pipe flow is come on the basis of adjusting heat primary air temperature, increase individually adjusts the air quantity regulation dress of every coal pulverizer import wind-warm syndrome
Put, while it is that can reach the effect for eliminating chimney white cigarette that can not have to install MGGH additional.
Utility model content
Technical problem to be solved in the utility model is the provision of a kind of reduction air preheater heat exchange amount, improves boiler hot
Efficiency utilizes heat primary air waste heat control coal pulverizer import temperature system of blast.
The utility model is that solve above-mentioned technical problem by the following technical programs：The utility model includes air preheater,
Main pipe road, heat-exchanger rig, tail flue gas flue, it is some enter coal pulverizer hot blast manifold, heat exchange branch pipe；The heat exchange branch pipe is connected to
On hot blast main pipe road, the heat-exchanger rig is arranged on heat exchange branch pipe, and in tail flue gas flue, it is described enter coal pulverizer hot blast
Branch pipe is arranged on hot blast main pipe road, is moved towards according to heat primary air, enters coal pulverizer hot blast manifold rear, and heat exchange branch pipe is preceding.
Preferably, in addition to branch pipe booster fan, the branch pipe booster fan is arranged on heat exchange branch pipe, and into tail
Before portion's flue gases duct.
Preferably, in addition to first flow regulating valve, the first flow regulating valve is arranged on heat exchange branch pipe, and is being entered
After entering tail flue gas flue.
Preferably, in addition to some second flow regulating valves, each second flow regulating valve are arranged on one and enter mill
On coal machine hot blast manifold, and before coal pulverizer is entered.
Preferably, the second flow regulating valve quantity is equal to the quantity into coal pulverizer hot blast manifold.
The utility model has advantages below compared with prior art：The system can largely reduce cold primary air flow, and enhancing is empty
Air preheater exchange capability of heat, exhaust gas temperature is reduced, improve stove effect, reduce coal consumption, energy-saving effect is obvious, safety and environmental protection and does not influence
Stable operation of unit；Furthermore chimney entrance flue gas temperature is heated using heat primary air, eliminates chimney white cigarette.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model heat primary air UTILIZATION OF VESIDUAL HEAT IN control coal pulverizer import temperature system of blast.
The tail flue gas cigarette of the main pipe road 2 of air preheater 1 31 first flow regulating valve of heat exchange 3 branch pipe booster fan of branch pipe 32
The heat-exchanger rig 6 of 4 chimney of road 5 enters the second flow regulating valve 71 of coal pulverizer hot blast manifold 7
Embodiment
Embodiment of the present utility model is elaborated below, the present embodiment using technical solutions of the utility model before
Put and implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited
In following embodiments.
As shown in figure 1, the present embodiment includes air preheater 1, main pipe road 2, exchange heat branch pipe 3, tail flue gas flue 4, heat exchange dress
Put 6, it is some enter coal pulverizer hot blast manifold 7；The heat exchange branch pipe 3 is connected on hot blast main pipe road 2, and the heat-exchanger rig 6 is set
On heat exchange branch pipe 3, and in tail flue gas flue 4, it is described enter coal pulverizer hot blast manifold 7 be arranged on hot blast main pipe road 2, press
Moved towards according to hot blast, enter coal pulverizer hot blast manifold 7 rear, heat exchange branch pipe 3 is preceding.
Also including branch pipe booster fan 31, the branch pipe booster fan 31 is arranged on heat exchange branch pipe 3, and into afterbody
Before flue gases duct 4.Also including first flow regulating valve 32, the first flow regulating valve 32 is arranged on heat exchange branch pipe 3, and
Into after tail flue gas flue 4.Also include some second flow regulating valves 71, each second flow regulating valve 71 is arranged on
One is entered on coal pulverizer hot blast manifold 7, and before coal pulverizer is entered.The quantity of second flow regulating valve 71 is equal into coal pulverizer
The quantity of hot blast manifold 7.
The course of work that this practicality is realized:
As shown in figure 1, the direction of arrow is heat primary air trend, air preheater outlet heat primary air main pipe road 2, now heat is once
Air temperature is higher, draws and exchanges heat branch pipe 3 all the way and carry first flow regulating valve 32, available for adjusting air quantity；By afterbody cigarette
Heat primary air of the gas flue 4 after the heat exchange cooling of heat-exchanger rig 6 enters coal pulverizer import after being mixed by branch pipe booster fan 31
Main pipe road 2, mixed with the heat primary air not cooled and flow to each coal pulverizer inlet, set on main pipe road 2 it is some enter mill
Coal machine hot blast manifold 7, second flow regulating valve 71 are the flow control valves of coal pulverizer inlet branch pipe, can be with every mill of accurate adjustment
Coal machine inlet temperature.
Air preheater exports heat primary air temperature t0 and is reduced to t1 behind the porch of chimney 5 and flue gas heat exchange, is adjusted by first flow
Valve control air quantity is saved, heats flue gas at chimney 5, can be by adjusting first flow governor valve control temperature t1；Draw temperature simultaneously
For t0 hot blast, the First air to have cooled after heat exchange returns mixing regulation one in hot blast main pipe by booster fan 31
Secondary air temperature t2, t0 and t2 hot blast enters every coal pulverizer after mixing, the EAT for accurately controlling each coal pulverizer to need
T1A, t1B, t1C etc..
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. one kind utilizes heat primary air waste heat control coal pulverizer import temperature system of blast, it is characterised in that including air preheater, main pipe
Road, heat-exchanger rig, tail flue gas flue, it is some enter coal pulverizer hot blast manifold, heat exchange branch pipe；The heat exchange branch pipe is connected to hot blast
On main pipe road, the heat-exchanger rig is arranged on heat exchange branch pipe, and in tail flue gas flue, it is described enter coal pulverizer hot blast manifold
It is arranged on hot blast main pipe road, is moved towards according to heat primary air, enter coal pulverizer hot blast manifold rear, heat exchange branch pipe is preceding.
2. one kind according to claim 1 is existed using heat primary air waste heat control coal pulverizer import temperature system of blast, its feature
In, in addition to branch pipe booster fan, the branch pipe booster fan, which is arranged on, to exchange heat on branch pipe, and is entering tail flue gas flue
Before.
3. one kind according to claim 1 is existed using heat primary air waste heat control coal pulverizer import temperature system of blast, its feature
In, in addition to first flow regulating valve, the first flow regulating valve, which is arranged on, to exchange heat on branch pipe, and is entering tail flue gas cigarette
Behind road.
4. one kind according to claim 1 is existed using heat primary air waste heat control coal pulverizer import temperature system of blast, its feature
In in addition to some second flow regulating valves, each second flow regulating valve is arranged on one and enters coal pulverizer hot blast manifold
On, and before coal pulverizer is entered.
5. one kind according to claim 4 is existed using heat primary air waste heat control coal pulverizer import temperature system of blast, its feature
In the second flow regulating valve quantity is equal to the quantity into coal pulverizer hot blast manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720728288.3U CN207169949U (en) | 2017-06-21 | 2017-06-21 | One kind utilizes heat primary air waste heat control coal pulverizer import temperature system of blast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720728288.3U CN207169949U (en) | 2017-06-21 | 2017-06-21 | One kind utilizes heat primary air waste heat control coal pulverizer import temperature system of blast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207169949U true CN207169949U (en) | 2018-04-03 |
Family
ID=61734153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720728288.3U Expired - Fee Related CN207169949U (en) | 2017-06-21 | 2017-06-21 | One kind utilizes heat primary air waste heat control coal pulverizer import temperature system of blast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207169949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844794A (en) * | 2020-12-02 | 2021-05-28 | 华电电力科学研究院有限公司 | Cold and hot primary air forced mixing system at inlet of double-inlet and double-outlet coal mill and method thereof |
-
2017
- 2017-06-21 CN CN201720728288.3U patent/CN207169949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844794A (en) * | 2020-12-02 | 2021-05-28 | 华电电力科学研究院有限公司 | Cold and hot primary air forced mixing system at inlet of double-inlet and double-outlet coal mill and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20190621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |