CN203203006U - Upright pulverized coal corner tube type boiler - Google Patents
Upright pulverized coal corner tube type boiler Download PDFInfo
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- CN203203006U CN203203006U CN 201220724248 CN201220724248U CN203203006U CN 203203006 U CN203203006 U CN 203203006U CN 201220724248 CN201220724248 CN 201220724248 CN 201220724248 U CN201220724248 U CN 201220724248U CN 203203006 U CN203203006 U CN 203203006U
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- boiler
- corner tube
- boiler body
- collection tank
- temperature air
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Abstract
The utility model discloses an upright pulverized coal corner tube type boiler. The upright pulverized coal corner tube type boiler comprises combustors, a boiler combustion chamber, a high temperature air preheater, a coal economizer, a low temperature air preheater, a convection bank, an upper collection tank, a top collection tank, a boiler barrel and a lower collection tank; the lower collection tank is arranged at the bottom of a boiler body; and the upper collection tank and the top collection tank which are arranged at the top of the boiler body are communicated with each other through steam communicating pipes. The upright pulverized coal corner tube type boiler is characterized in that the combustors are arranged on the front portion of the boiler body; the boiler body is in an upright corner membrane wall type structure; four down pipes are arranged at four corners of the boiler body; two ends of the four down pipes and an membrane wall are respectively communicated with the upper collection tank and the lower collection tank; the convection bank is arranged on the external side of the membrane wall; the top of the convection bank is communicated with a smoke outlet of the combustion chamber; and the bottom of the convection bank is communicated with the high temperature air preheater. The upright pulverized coal corner tube type boiler has the advantages of being compact in whole structure, simple in shape arrangement, small in occupying area, low in steel consumption, large in water circulation pressure difference and safe and reliable in water circulation and the like.
Description
Technical field
The utility model belongs to the coal-burned industrial boiler field, and being specifically related to a kind of is fuel with coal dust or municipal sludge, living beings, for generation of the vertical coal dust corner tube boiler of steam.
Background technology
The energy resource structure of China is based on coal, and in the following long duration, coal-burned industrial boiler will be the leading products of Industrial Boiler.
Traditional industry coal-boiler is based on grate firing boiler, and shortcoming is that efficiency of combustion is low, and is seriously polluted, is difficult to satisfy energy-saving and emission-reduction and pollutant emission requirement.
Coal dust firing is one of high performance clean burning mode of coal, and its efficiency of combustion can reach more than 96%, is the combustion technology of a maturation, is widely used at large-sized station boiler.In recent years, coal dust firing also is applied on Industrial Boiler, all adopts horizontal internal combustion pan shell type structure, the two drum water pipe structures of D type or bottom to arrange the vertical coal-powder boiler of burner.But there is certain deficiency:
1) burning is even inadequately, and the front and back temperature difference is bigger, is unfavorable for reducing NO
XContent.
2) load regulation range is little, can only use single-fuel-coal dust.
3) Boiler Ash, slag cleaning inconvenience.
4) the boiler room floor space is big.
5) the easy coking of burner hearth bottom.
6) burner maintenance difficulty.
Summary of the invention
The utility model provides a kind of novel vertical coal dust corner tube boiler at the deficiency of existing horizontal pulverized-coal fired boiler.
The utility model is achieved through the following technical solutions: a kind of vertical coal dust corner tube boiler, comprise burner, boiler body, high-temperature air preheater, economizer, low-temperature air preheater, convection bank, upper collecting chamber, top collection case, drum and next part case, described next part case is arranged on the bottom of boiler body, described upper collecting chamber and top collection case are arranged on the top of boiler body, and by vapour communicating pipe UNICOM; It is characterized in that described burner is arranged on the front portion of boiler body; Described boiler body adopts vertical film water cold wall structure, arranges 4 down-comers for four jiaos, in the two ends of described down-comer and fin panel casing respectively with described upper collecting chamber and next part case UNICOM; Described convection bank is arranged on the outside of fin panel casing, its top and burner hearth outlet flue UNICOM, bottom and described high-temperature air preheater UNICOM; The air space UNICOM of described top collection case and described drum, the hydrospace UNICOM of described upper collecting chamber and described drum.
Vertical coal dust corner tube boiler of the present utility model, coal dust or municipal sludge borrow a wind to spray into vertical furnace chamber by anterior burner, simultaneously, the high temperature air after the heating of low-temperature air preheater and high-temperature air preheater also enters burner and powder fuel mix and enters burner hearth and carry out fierce suspension combustion; And in burner hearth, arranged the two-stage tertiary air, guaranteed that burner hearth has sufficient oxygen and fuel reaction burning.High-temperature flue gas turnover behind the burner hearth combustion heat-exchange enters convection bank downwards for 180 ° and carries out heat convection, and flue gas enters flue gas purification system after entering high-temperature air preheater, economizer and empty low wet preheater more successively.
The utlity model has following advantage:
1) boiler body adopts vertical corner tube type structural configuration, arranges 4 heavy caliber down-comers for four jiaos, and this down-comer is water circulation pipe, also support simultaneously whole boiler, therefore do not need to establish in addition supporting steel frame, compact overall structure, profile are arranged simply, floor space is little, and the steel consumption is low.
2) burner hearth adopts membrane wall structure, and furnace wall only needs insulation material, integral sealing, good heat insulating, and it is few to leak out.
3) boiler water cycle pressure reduction is big, and safe water circulation is reliable.
4) upper collecting chamber is connected with vapour communicating pipe with top collection case and inserts drum simultaneously, and steam water interface enters upper collecting chamber from heating surface, and in upper collecting chamber the carbonated drink pre-separation takes place, and steam collects the air space that case enters drum top through vapour communicating pipe to pushing up.Because upper collecting chamber all inserts at the high water level place of drum, then steam does not directly insert drum by the hydrospace, thereby has avoided the generation of foam, adds the steam that enters drum and has carried out pre-separation, therefore, has improved the quality of steam greatly.
5) one of the utility model particularly important characteristic be that burner arrangement is in the front portion of boiler body.This improvement makes the utility model also have the following advantages:
5.1) can reduce the boiler body total height, shorten first and second airduct and oil (gas) duct length; Reduce the boiler cost.
5.2) Pulverized Coal Bin or coal pulverizer can be arranged in the stokehold, the pulverized coal channel that leads to burner is shorter, and resistance is less, can reduce the pulverizer air acc power, save electricity; And coal dust and air capacity to each burner are more even.
5.3) size of section of burner hearth determines to compare freedom, be convenient to match with convection pass size and drum length.
5.4) be convenient to install, clear up and the maintenance burner.
5.5) burner hearth bottom is convenient to lime-ash and arranges automatic mucking machine, the labor personnel's of reduction department labour intensity, the raising efficient of slagging tap.
As further improvement of the utility model, described burner is two, and described two burners all are arranged on the front portion of boiler body.The benefit that double burner is arranged is that each burner can control separately, improves the stability of burning and the adjusting function of load greatly, can use two or more fuel simultaneously.
Further improve as of the present utility model, the flag facial canal is adopted in described convection bank again.Convection heating surface adopts the flag facial canal, and the flag facial canal press that certain angle is vertical to be arranged along row, the heating surface abundance, circulation reliably, sweep of gases is smooth and easy, is difficult for dust stratification, prolonged boiler service life.
Further improve as of the present utility model, adopt grading combustion technology, send into the two-stage tertiary air in the burner hearth successively, whole temperature field is even, can effectively stop the generation of burner hearth coking and reduction nitrogen oxide.
Description of drawings
Fig. 1 is the structure chart of the vertical coal dust corner tube boiler of the utility model.
Fig. 2 is that the A-A of Fig. 1 is to cutaway view.
Among the figure, 1-low-temperature air preheater, 2-economizer, 3-convection bank, the 4-high-temperature air preheater, 5-upper collecting chamber, 6-vapour communicating pipe, 7-top collection case, 8-drum, 9-explosion proof door, 10-one-level tertiary air, 11-secondary tertiary air, 12-down-comer, the 13-burner hearth, 14-next part case, 15-cleaning door, the 16-inspection door, 17-burner, 18-burner hearth outlet flue.
The specific embodiment
With reference to Fig. 1, a kind of vertical coal dust corner tube boiler, comprise two burners 17, boiler furnace 13, high-temperature air preheater 4, economizer 2, low-temperature air preheater 1, convection bank 3, upper collecting chamber 5, top collection case 7, drum 8 and next part case 14, described next part case 14 is arranged on the bottom of boiler body, described upper collecting chamber 5 and top collection case 7 are arranged on the top of boiler body, and by vapour communicating pipes 6 UNICOM; Described burner 17 is arranged on the front portion of boiler body; Described boiler body adopts vertical film water cold wall structure, arranges 4 down-comers 12 for four jiaos, in the two ends of described down-comer 12 and fin panel casing respectively with described upper collecting chamber 5 and next part case 14 UNICOMs; The flag facial canal is adopted in described convection bank 3, and the vertical outside that is arranged in fin panel casing along row, the top of convection bank 3 and burner hearth outlet flue 18 UNICOMs, bottom and described high-temperature air preheater 4 UNICOMs, the gas approach end of economizer 2 and high-temperature air preheater 4 other end UNICOMs, the port of export is connected to low-temperature air preheater 1; The air space UNICOM of described top collection case 7 and described drum 8, the hydrospace UNICOM of described upper collecting chamber 5 and described drum 8.
Two burner 17 burnings can independently be controlled, and burner hearth 13 bottoms are provided with explosion proof door 9 and cleaning door 15, and medium position is furnished with the two-stage tertiary air.
Operation principle of the present utility model is as follows:
Coal dust or municipal sludge borrow a wind to spray into vertical furnace chamber 13 by anterior two burners 17, simultaneously, the high temperature air after 4 heating of low-temperature air preheater 1 and high-temperature air preheater also enters burner 17 and enters burner hearth 13 with the powder fuel mix and carry out fierce suspension combustion; And in burner hearth, arranged the two-stage tertiary air, guaranteed that burner hearth has sufficient oxygen and fuel reaction burning.Enter flag facial canal 3 downwards at the high-temperature flue gas behind the burner hearth combustion heat-exchange for 180 ° from burner hearth outlet flue 18 turnovers above the burner hearth 13 and carry out heat convection, flue gas enters flue gas purification system after entering high-temperature air preheater 4, economizer 2 and low-temperature air preheater 1 more successively.In flue gas purification system, the solid particle in the flue gas is eliminated, and clean preheated air sprays into vertical furnace chamber 13 again from two burners 17.High-temperature air preheater 4 and low-temperature air preheater 1 can utilize the waste heat of flue gas that air is carried out preheating, thereby reach recycling and purpose of energy saving.
Fin panel casing and 4 down-comers 12 of upper collecting chamber 5, top collection case 7, vapour communicating pipe 6, next part case 14, burner hearth constitute the water circulation system of sealing.Upper collecting chamber 5 is connected with top collection and inserts drum 8 simultaneously 7 usefulness vapour communicating pipes 6 of case, steam water interface enters upper collecting chamber 5 from the heating surface rising of fin panel casing, and in the pre-separation of 5 li generations of upper collecting chamber carbonated drink, steam enters the air space on drum 8 tops to top collection case 7 through vapour communicating pipe 6.Because upper collecting chamber 5 all inserts at the high water level place of drum 8, then steam does not directly insert drum by the hydrospace, thereby has avoided the generation of foam, adds the steam that enters drum 8 and has carried out pre-separation, therefore, has improved the quality of steam greatly.Water after 5 li carbonated drink pre-separations of upper collecting chamber flows into next part case 14 from 4 down-comers 12, enters in the fin panel casing again, forms the water circulation.
What should be understood that is: above-described embodiment is just to explanation of the present utility model, rather than to restriction of the present utility model, any utility model that does not exceed in the utility model connotation scope is created, and all falls within the protection domain of the present utility model.
Claims (4)
1. a vertical coal dust corner tube boiler comprises burner (17), boiler furnace (13), high-temperature air preheater (4), economizer (2), low-temperature air preheater (1), convection bank (3), upper collecting chamber (5), top collection case (7), drum (8) and next part case (14); Described next part case (14) is arranged on the bottom of boiler body; Described upper collecting chamber (5) and top collection case (7) are arranged on the top of boiler body, and by vapour communicating pipe (6) UNICOM; It is characterized in that described burner (17) is arranged on the front portion of boiler body; Described boiler body adopts vertical film water cold wall structure, arranges 4 down-comers (12) for four jiaos, the two ends of described down-comer (12) and fin panel casing respectively with described upper collecting chamber (5) and next part case (14) UNICOM; Described convection bank (3) is arranged on the outside of fin panel casing, its top and burner hearth outlet flue (18) UNICOM, bottom and described high-temperature air preheater (4) UNICOM; The air space UNICOM of described top collection case (7) and described drum (8), the hydrospace UNICOM of described upper collecting chamber (5) and described drum (8).
2. a kind of vertical coal dust corner tube boiler as claimed in claim 1 is characterized in that described burner (17) is two.
3. a kind of vertical coal dust corner tube boiler as claimed in claim 2 is characterized in that described two burners (17) all are arranged on the boiler body front portion.
4. as any one described a kind of vertical coal dust corner tube boiler of claim 1-3, it is characterized in that described convection bank (3) employing flag facial canal, and it is vertical along the row layout to press certain angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220724248 CN203203006U (en) | 2012-12-24 | 2012-12-24 | Upright pulverized coal corner tube type boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220724248 CN203203006U (en) | 2012-12-24 | 2012-12-24 | Upright pulverized coal corner tube type boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203203006U true CN203203006U (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220724248 Expired - Lifetime CN203203006U (en) | 2012-12-24 | 2012-12-24 | Upright pulverized coal corner tube type boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN203203006U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062747A (en) * | 2012-12-24 | 2013-04-24 | 杭州燃油锅炉有限公司 | Vertical type coal dust corner tube boiler |
| CN107830509A (en) * | 2017-11-28 | 2018-03-23 | 亿利洁能科技有限公司 | A kind of coal powder cleaning combusting boiler of dilatation design |
| CN109140412A (en) * | 2018-09-27 | 2019-01-04 | 哈尔滨四方锅炉有限公司 | A kind of lower air inlet gas fuel corner tube boiler of list drum inclined type injection |
-
2012
- 2012-12-24 CN CN 201220724248 patent/CN203203006U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062747A (en) * | 2012-12-24 | 2013-04-24 | 杭州燃油锅炉有限公司 | Vertical type coal dust corner tube boiler |
| CN107830509A (en) * | 2017-11-28 | 2018-03-23 | 亿利洁能科技有限公司 | A kind of coal powder cleaning combusting boiler of dilatation design |
| CN109140412A (en) * | 2018-09-27 | 2019-01-04 | 哈尔滨四方锅炉有限公司 | A kind of lower air inlet gas fuel corner tube boiler of list drum inclined type injection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province 311115 Fengdu Pingyao Town, Yuhang District Industrial Zone Road, Yangcheng Road No. 1-9 Patentee after: HANGZHOU JUNENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: Hangzhou City, Zhejiang province 311115 Fengdu Pingyao Town, Yuhang District Industrial Zone Road, Yangcheng Road No. 1-9 Patentee before: HANGZHOU JUNENG BOILER Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |