CN203628629U - Coal saving device for coal burning boiler - Google Patents

Coal saving device for coal burning boiler Download PDF

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Publication number
CN203628629U
CN203628629U CN201320493397.3U CN201320493397U CN203628629U CN 203628629 U CN203628629 U CN 203628629U CN 201320493397 U CN201320493397 U CN 201320493397U CN 203628629 U CN203628629 U CN 203628629U
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CN
China
Prior art keywords
coal
saving
cyclone separator
boiler
flue
Prior art date
Application number
CN201320493397.3U
Other languages
Chinese (zh)
Inventor
温继翰
连铁峰
李志祥
秦刚
黄照倩
Original Assignee
温继翰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 温继翰 filed Critical 温继翰
Priority to CN201320493397.3U priority Critical patent/CN203628629U/en
Application granted granted Critical
Publication of CN203628629U publication Critical patent/CN203628629U/en

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Abstract

The utility model relates to the field of boiler systems, and in particular to a coal saving device for a coal burning boiler. The coal saving device comprises a cyclone separator, a pneumatic conveying device, a flue channel and a hearth. The cyclone separator is arranged in the flue channel, the lower portion of the cyclone separator is connected to the pneumatic conveying device, the pneumatic conveying device, is connected to a return feeder through a return pipe, and an inlet of the return feeder is communicated to the furnace. By means of the device, the problems that according to an existing boiler, burning is not sufficient and flue contains a large amount of unburned pulverized coal can be solved. By recovering the unburned pulverized coal, coal usage of the coal burning boiler is reduced, and using rate of coal is increased.

Description

A kind of coal-burning boiler coal-saving device

Technical field

The utility model relates to steam generator system field, relates in particular to a kind of coal-burning boiler coal-saving device.

Background technology

Boiler is a kind of by the burning of fuel, the chemical energy in fuel is converted into the device of heat energy.The fuel using has: coal, heavy oil, liquefied gas etc.Along with deepening continuously of energy-conserving and environment-protective, an enterprise will stand firm in market economy, must make great efforts to reduce costs, and improves the ability of enterprise participation competition.The enterprise of present many application coal-burning boilers, all reaches the object of saving coal by minimizing area of heat-supply service, shortening heating time, and has often ignored the coal waste of boiler in running.

Because coal in China kind mixes, often coal burning caloricity can not match with the coal-fired kind of boiler design, lower than designing requirement, do not reach desirable combustion conditions, therefore the thermal efficiency is on the low side, and the coal-fired fugitive constituent having is higher, catches fire rapidly, when burning, there is longer flame, burn comparatively stable, but coking capacity is strong, easily forms closely knit jelly, in addition, the coal that ash fusion point is low, the ash content after burning is easily formed piece, also can make the ventilation condition of fire grate worsen, impact burning, causes the increase of unburned coal amount in slag.Having comparatively general phenomenon is at present that boiler load factor is on the low side, and furnace load decreases, and burning of coal is incomplete, and boiler slag carbon content raises.

Burning of coal will be experienced the low temperature when lighting to the aflame high temperature chilling process to will after-flame time again, use vapour needs for what meet productive life, must maintain the high temperature in burner hearth, this just need to increase air blast and air inducing amount, improve boiler operatiopn speed, make the coal moment in burner hearth remain on the high-temp combustion stage, cause burning of coal incomplete.Due to the increase of air quantity, the flue-gas temperature being discharged from outside stove raises simultaneously, and cigarette amount increases, and has not only taken away many heats, has also taken away many unburneds pulverized coal particle completely, causes the pulverized coal particle that contains many black in cigarette ash.

Summary of the invention

the technical problem solving

It is insufficient that the utility model mainly solves current boiler combustion, contains the problem of a large amount of unburnt pulverized coal particles in cigarette ash.

technical scheme

For solving the problems of the technologies described above, the concrete solution that the utility model provides is:

A kind of coal-burning boiler coal-saving device, comprises cyclone separator, Pneumatic conveyer, flue, burner hearth, is furnished with cyclone separator in described flue, cyclone separator bottom connects Pneumatic conveyer, and Pneumatic conveyer is connected with material returning device by returning charge pipeline, and burner hearth is led in material returning device import.

Described cyclone separator is arranged in air flue horizontal section and the corner of the ascent stage of tilting.

The dividing plate that described flue is vertically placed at horizontal segment is partitioned into two passages.

The import of described respectively with two cyclone separators of two passages is connected.

Described material returning device is the feed back leg of fluidized-bed combustion boiler.

Described material returning device is the tertiary air nozzle of coal-powder boiler.

By above technical scheme, can recovered flue gas dust in unburnt pulverized coal particle, accomplish the abundant recycling of fuel.

beneficial effect

By the unburnt pulverized coal particle in recovered flue gas, reduce the coal amount of coal-burning boiler, improve coal-fired utilization rate.

Accompanying drawing explanation

Accompanying drawing 1, structure connection diagram of the present utility model;

Accompanying drawing 2, the utility model flue and cyclone separator connection diagram;

Mark in figure: 1, material returning device 2, burner hearth 3, returning charge pipeline 4, Pneumatic conveyer 5, valve 6, cyclone separator 7, dividing plate 8, flue.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is further described

With reference to Fig. 1, a kind of coal-burning boiler coal-saving device, comprises cyclone separator 6, Pneumatic conveyer 4, flue 8, burner hearth 2, is furnished with cyclone separator 6 in flue 8, fly ash granule weight in cigarette ash is large, phosphorus content is high, under the effect of cyclone separator 6, falls in the ash bucket of cyclone separator 6, cyclone separator 6 bottoms connect Pneumatic conveyer 4, and Pneumatic conveyer 4 is connected with material returning device 1 by returning charge pipeline 3.In the time that the ash bucket inner product of cyclone separator 6 expires fly ash granule, open the valve 5 under cyclone separator 6, fly ash granule, under the gases at high pressure effect of Pneumatic conveyer 4, is got back to material returning device 1 by returning charge pipeline 3, then gets back to burner hearth 2 by the import of material returning device 1 and burns away.Cyclone separator 6 is arranged in flue 8 horizontal segments and the corner of the ascent stage of tilting.

With reference to Fig. 2, the dividing plate 7 that flue 8 is vertically placed at horizontal segment is partitioned into two passages.The import of respectively with two cyclone separators 6 of two passages is connected.

It can be the feed back leg of boiler for material returner of fluidized-bed boiler 1.The tertiary air nozzle that is coal-powder boiler for coal-powder boiler material returning device 1.

The utility model can recovered flue gas dust in unburnt fly ash granule, accomplish the abundant recycling of fuel.

Claims (6)

1. a coal-burning boiler coal-saving device, comprise cyclone separator (6), Pneumatic conveyer (4), flue (8), burner hearth (2), is characterized in that: in described flue (8), be furnished with cyclone separator (6), cyclone separator (6) bottom connects Pneumatic conveyer (4), Pneumatic conveyer (4) is connected with material returning device (1) by returning charge pipeline (3), and burner hearth (2) is led in material returning device (1) import.
2. a kind of coal-burning boiler coal-saving device as claimed in claim 1, is characterized in that: described cyclone separator (6) is arranged in flue (8) horizontal segment and the corner of the ascent stage of tilting.
3. a kind of coal-burning boiler coal-saving device as claimed in claim 1, is characterized in that: the dividing plate (7) that described flue (8) is vertically placed at horizontal segment is partitioned into two passages.
4. a kind of coal-burning boiler coal-saving device as claimed in claim 3, is characterized in that: the import of described respectively with two cyclone separators of two passages (6) is connected.
5. a kind of coal-burning boiler coal-saving device as claimed in claim 1, is characterized in that: the feed back leg that described material returning device (1) is fluidized-bed combustion boiler.
6. a kind of coal-burning boiler coal-saving device as claimed in claim 1, is characterized in that: the tertiary air nozzle that described material returning device (1) is coal-powder boiler.
CN201320493397.3U 2013-08-14 2013-08-14 Coal saving device for coal burning boiler CN203628629U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320493397.3U CN203628629U (en) 2013-08-14 2013-08-14 Coal saving device for coal burning boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320493397.3U CN203628629U (en) 2013-08-14 2013-08-14 Coal saving device for coal burning boiler

Publications (1)

Publication Number Publication Date
CN203628629U true CN203628629U (en) 2014-06-04

Family

ID=50815103

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320493397.3U CN203628629U (en) 2013-08-14 2013-08-14 Coal saving device for coal burning boiler

Country Status (1)

Country Link
CN (1) CN203628629U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106594773A (en) * 2016-11-22 2017-04-26 重庆代发铸造有限公司 Recovery type coal-fired boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106594773A (en) * 2016-11-22 2017-04-26 重庆代发铸造有限公司 Recovery type coal-fired boiler

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140604

Termination date: 20160814