CN201621675U - Horizontal type pulverized coal boiler with bend type aftercombustion chamber - Google Patents
Horizontal type pulverized coal boiler with bend type aftercombustion chamber Download PDFInfo
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- CN201621675U CN201621675U CN2010201526083U CN201020152608U CN201621675U CN 201621675 U CN201621675 U CN 201621675U CN 2010201526083 U CN2010201526083 U CN 2010201526083U CN 201020152608 U CN201020152608 U CN 201020152608U CN 201621675 U CN201621675 U CN 201621675U
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- partition wall
- burner hearth
- secondary furnace
- hearth
- boiler
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Abstract
The utility model discloses a horizontal type pulverized coal boiler with a bent type aftercombustion chamber, which comprises a hearth, the aftercombustion chamber, a convection pass and a pulverized coal burner. The hearth, the aftercombustion chamber and the convection pass are separated from each other by partition walls, the pulverized coal burner is installed on the front wall of the hearth, the hearth and the aftercombustion chamber are separated from each other through a first partition wall, the convection pass and the aftercombustion chamber are separated from each other through a second partition wall, a smoke passage port communicated with the hearth and the aftercombustion chamber is formed at one end of the first partition wall positioned on the rear side of the hearth, and a smoke passage port communicated with the convection pass and the aftercombustion chamber is formed at one end of the second partition wall positioned on the front side of the hearth. The utility model has the benefit that smoke passes the hearth depth extension provided by the arrangement of the aftercombustion chamber, the first partition wall, the second partition wall and the smoke passage ports in the boiler before entering the bend type aftercombustion chamber, thereby providing enough space and time for pulverized coal burnout in the boiler, and achieving higher combustion efficiency.
Description
Technical field
The utility model relates to the coal-burned industrial boiler field, be specifically a kind of be fuel with the coal dust, be used to supply the horizontal pulverized-coal fired boiler of the band turning type secondary furnace of steam or hot water.
Background technology
Coal dust firing is one of high performance clean burning mode of the coal of generally acknowledging, and its efficiency of combustion can reach more than 95% usually, is that other combustion system institute is unapproachable.Pulverized coal combustion also is the combustion technology of a maturation, on large-sized station boiler, use quite general, and long-term history arranged, just because the limitation of economic development and science and technology, be subjected to cost height, uncontrollable atmosphere pollution initial ejection concentration and pollute the restriction of aspects such as the thing discharging is serious, make this clean burning technology on small-sized industrial boiler, not obtain good application for a long time.In order on miniature boiler, to use pulverized coal combustion, realize low energy consumption, low emission, researched and developed horizontal pulverized-coal fired boiler in recent years.This boiler is fuel with the coal dust, with burner with high efficiency, the high-efficiency cloth bag deduster is supporting, realize efficient, low temperature, clean burning, in stove, suppress oxysulfide, nitrogen oxide forms, reduce black smoke and produce, and handle by flue gas, the discharging of control boiler pollutant finally makes the coal-burning boiler thermal efficiency, and pollutant emission reaches the level of oil-burning gas-fired boiler.Simultaneously owing to adopt horizontal burner hearth, for the vertical furnace chamber of the employing of generating plant pulverized coal boiler, the manufacturing cost of boiler body and the investment that the boiler room is built have been reduced significantly, thereby the cost that makes small-sized industrial coal powder boiler is reduced to user's acceptable level, for applying of small-sized efficient pulverized-coal fired boiler created advantage.
Present known coal-burned industrial boiler mainly comprises grate firing boiler and fluidized-bed combustion boiler, and the small-sized pulverized-coal fired boiler (capacity that refers generally to below 35t/h be the Industrial Boiler of fuel with the coal dust) that coal dust firing is applied to the Industrial Boiler field is arranged in recent years.
Wherein, grate firing boiler is meant that fuel (raw coal) at the boiler that grate (fire grate) upward burns, is also referred to as the grate stove.Fluidized-bed combustion boiler is to utilize air to carry out fluidisation after the raw coal fragmentation is become a certain size particle, makes coal produce motion of class pseudo boiling shape and burning in burner hearth, and fluidized-bed combustion boiler is also referred to as fluidized bed furnace.Grate firing boiler technology maturation, shortcoming are that efficiency of combustion is low, and be seriously polluted; The fluidized-bed combustion boiler efficiency of combustion is higher, but at present technology is ripe not enough, and is especially not too successful on the small-sized Industrial Boiler of application study, and flue gas after-treatment system complexity, and cost is higher.The pollutant emission of these two big class boilers all is difficult to satisfy big and medium-sized cities (one, two class areas) governance for reaching standard requirement under present condition.Therefore, the inaccurate coal-burning boiler that uses in urban district is all stipulated in domestic many big and medium-sized cities, only accurately uses fuel oil, gas fired-boiler, and fuel oil, gas fired-boiler be because fuel cost is several times as much as fire coal, and limited to by fuel source, is difficult to large tracts of land and promotes the use of.
Summary of the invention
At the deficiencies in the prior art, the utility model for remedying the limited deficiency of horizontal burner hearth length dimension, provides a kind of horizontal pulverized-coal fired boiler with the turning type secondary furnace on the basis of horizontal pulverized-coal fired boiler.
A kind of horizontal pulverized-coal fired boiler with the turning type burner hearth is characterized in that: comprise burner hearth, secondary furnace, convection pass, coal burner.
Separate with partition wall between described burner hearth, secondary furnace and the convection pass, coal burner is installed on the burner hearth front wall, separates by first partition wall between burner hearth and the secondary furnace, separates by second partition wall between convection pass and the secondary furnace; An end that is positioned at the burner hearth rear side at described first partition wall is provided with the exhaust gases passes mouth that burner hearth is communicated with secondary furnace; An end that is positioned at the burner hearth front side at described second partition wall is provided with the exhaust gases passes mouth that convection pass is communicated with secondary furnace.Be provided with convection bank in the convection pass.Flue gas equals to make furnace depth to continue to prolong by the process that burner hearth enters into the turning type secondary furnace, enough room and times is provided for coal dust after-flame in stove, obtains higher efficiency of combustion.
Advantage of the present utility model is:
1, the utility model is provided with the turning type secondary furnace behind the furnace outlet of horizontal pulverized-coal fired boiler, can furnace depth satisfy that the control of furnace heating surface and exit gas temperature requires after, make the degree of depth of burner hearth continue to prolong by the turning type secondary furnace, enough room and times are provided for coal dust after-flame in stove, can obtain higher efficiency of combustion.
2, the cross section of turning type secondary furnace flexible arrangement on demand, rather than simple burner hearth uiform section prolongs, and has better economic.
Description of drawings
Fig. 1 overlooks sectional structure chart for the utility model;
Fig. 2 is the utility model front view.
Among the figure:
| 1-burner hearth 6-second partition wall | 2-secondary furnace 7-convection bank | 3-convection pass 8-exhaust gases passes mouth | The 4-coal burner | 5-first partition wall |
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
A kind of horizontal pulverized-coal fired boiler with the turning type burner hearth of the utility model as shown in Figure 1 and Figure 2, comprises burner hearth 1, secondary furnace 2, convection pass 3, coal burner 4.In order to guarantee coal dust fully burning in the hot environment in burner hearth 1 space, then needing provides an enough big space and wall for the burning of coal dust, therefore be provided with secondary furnace 2 in horizontal burner hearth 1 left side or right side, the left side of burner hearth 1 is provided with secondary furnace 2 in the present embodiment.The cross section of set secondary furnace 2 can be less than or equal to the cross section of burner hearth 1.Consider flue gas flow rate, the time of staying and the factors such as flue-gas temperature that enter convection bank, the cross section of secondary furnace 2 can flexible arrangement, has better economic thus.By first partition wall 5 burner hearth 1 and secondary furnace 2 are separated, first partition wall 5 and burner hearth 1 parallel sidewalls, the end that first partition wall 5 is positioned at burner hearth 1 rear side is provided with the exhaust gases passes mouth 8 that burner hearth 1 is communicated with secondary furnace 2.Be provided with convection pass 3 in secondary furnace 2 left sides or right side, the left side of choosing secondary furnace 2 in the present embodiment is provided with convection pass 3.Be provided with convection bank 7 in the convection pass 3, by second partition wall 6 convection pass 3 and secondary furnace 2 separated, second partition wall 6 is parallel with first partition wall 5, and second partition wall 6 is positioned at the exhaust gases passes mouth 8 of the end setting of burner hearth 1 front side; Just enter in combustion chamber 2, the convection pass 3 by exhaust gases passes mouth 8 if the 8 mistake conferences of exhaust gases passes mouth cause coal dust can not burn fully in burner hearth 1 and secondary furnace 2; If exhaust gases passes mouth 8 is too small, coal dust resistance by exhaust gases passes mouth 8 places the time is strengthened, cause circulation to have some setbacks, make dust stratification in burner hearth 1 and the combustion chamber 2.Be connected with coal burner 4 at burner hearth 1 front end, be used for making coal dust firing.
When operation is used, coal dust is after burner hearth 1 internal combustion, flue gas in the burner hearth 1 is transferred 180 ° by exhaust gases passes mouth 8 places that first partition wall 5 is positioned at burner hearth 1 rear portion, enter secondary furnace 2, flue gas burns away in secondary furnace 2, and carry out the radiation heat release, and be arranged in 180 ° of convection banks 7 that enter convection pass 3 of exhaust gases passes mouth 8 places turnover of secondary furnace 2 front ends subsequently at second partition wall 6, carry out discharging the external world behind the heat convection through convection bank 7.
The utility model is provided with turning type secondary furnace 2 in burner hearth 1 side of horizontal pulverized-coal fired boiler, can burner hearth 1 degree of depth satisfy that the control of burner hearth 1 heating surface and exit gas temperature requires after, make the degree of depth of burner hearth 1 continue to prolong by turning type secondary furnace 2, enough room and times are provided for coal dust after-flame in boiler, can obtain higher efficiency of combustion.Simultaneously, because the cross section of turning type secondary furnace 2 flexible arrangement on demand, rather than simple burner hearth 1 uiform section prolongs, and also has better economic.
Claims (5)
1. the horizontal pulverized-coal fired boiler with the turning type secondary furnace is characterized in that: comprise burner hearth, secondary furnace, convection pass, coal burner;
Separated by partition wall between described burner hearth, secondary furnace and the convection pass, coal burner is installed on the burner hearth front wall, separates by first partition wall between burner hearth and the secondary furnace, separates by second partition wall between convection pass and the secondary furnace; An end that is positioned at the burner hearth rear side at described first partition wall is provided with the exhaust gases passes mouth that burner hearth is communicated with secondary furnace; An end that is positioned at the burner hearth front side at described second partition wall is provided with the exhaust gases passes mouth that convection pass is communicated with secondary furnace; Be provided with convection bank in the convection pass.
2. a kind of according to claim 1 horizontal pulverized-coal fired boiler with the turning type secondary furnace is characterized in that: described secondary furnace is arranged on burner hearth left side or right side.
3. a kind of according to claim 1 horizontal pulverized-coal fired boiler with the turning type secondary furnace is characterized in that: described convection pass is arranged on secondary furnace left side or right side.
4. a kind of according to claim 1 horizontal pulverized-coal fired boiler with the turning type secondary furnace is characterized in that: the cross section of set secondary furnace less than or the cross section of burner hearth.
5. a kind of according to claim 1 horizontal pulverized-coal fired boiler with the turning type burner hearth, it is characterized in that: first partition wall is parallel with burner hearth sidewall, and second partition wall is parallel with a partition wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201526083U CN201621675U (en) | 2010-04-06 | 2010-04-06 | Horizontal type pulverized coal boiler with bend type aftercombustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201526083U CN201621675U (en) | 2010-04-06 | 2010-04-06 | Horizontal type pulverized coal boiler with bend type aftercombustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621675U true CN201621675U (en) | 2010-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201526083U Expired - Fee Related CN201621675U (en) | 2010-04-06 | 2010-04-06 | Horizontal type pulverized coal boiler with bend type aftercombustion chamber |
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| CN (1) | CN201621675U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047638A (en) * | 2012-12-12 | 2013-04-17 | 杭州燃油锅炉有限公司 | Horizontal type two-channel pulverized coal fired boiler |
| CN103335302A (en) * | 2013-06-25 | 2013-10-02 | 山西蓝天环保设备有限公司 | Auxiliary reburning technology capable of improving burn-off rate of pulverized coal |
| CN110160039A (en) * | 2018-02-14 | 2019-08-23 | 兖矿中科清洁能源科技有限公司 | Overhead burner pulverized-coal fired boiler and its control method |
| CN111121006A (en) * | 2018-11-01 | 2020-05-08 | 中国科学院工程热物理研究所 | Horizontal pulverized coal boiler and control method thereof |
-
2010
- 2010-04-06 CN CN2010201526083U patent/CN201621675U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047638A (en) * | 2012-12-12 | 2013-04-17 | 杭州燃油锅炉有限公司 | Horizontal type two-channel pulverized coal fired boiler |
| CN103335302A (en) * | 2013-06-25 | 2013-10-02 | 山西蓝天环保设备有限公司 | Auxiliary reburning technology capable of improving burn-off rate of pulverized coal |
| CN110160039A (en) * | 2018-02-14 | 2019-08-23 | 兖矿中科清洁能源科技有限公司 | Overhead burner pulverized-coal fired boiler and its control method |
| CN111121006A (en) * | 2018-11-01 | 2020-05-08 | 中国科学院工程热物理研究所 | Horizontal pulverized coal boiler and control method thereof |
| CN111121006B (en) * | 2018-11-01 | 2021-03-26 | 中国科学院工程热物理研究所 | Horizontal pulverized coal boiler and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20150406 |
|
| EXPY | Termination of patent right or utility model |