CN205208551U - A boiler structure for burning remove dust in middle of gangue - Google Patents
A boiler structure for burning remove dust in middle of gangue Download PDFInfo
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- CN205208551U CN205208551U CN201521068303.3U CN201521068303U CN205208551U CN 205208551 U CN205208551 U CN 205208551U CN 201521068303 U CN201521068303 U CN 201521068303U CN 205208551 U CN205208551 U CN 205208551U
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- boiler
- gangue
- end ductwork
- low temperature
- afterbody
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Abstract
The utility model provides a boiler structure for burning remove dust in middle of gangue, it relates to boiler technical field. For solving the problem that polishing machine big of current pulverized coal boiler multifuel combustion gangue to afterbody flue and other pipelines, the utility model discloses a boiler structure for burning remove dust in middle of gangue, the afterbody flue is connected by the hot side with afterbody flue low temperature, and afterbody flue low temperature is connected by hot side and air heater, and the furnace of boiler is provided with two afterbody flues and fed through by the hot side with afterbody flue low temperature, connects a multicell dust collector on the every afterbody flue respectively, and multicell dust collector is connected with the afterbody flue through intake pipe and blast pipe respectively. The utility model discloses a structure can reduce substantially the wearing and tearing that the afterbody received hot side and flue to reach and to realize adopting pulverized coal boiler to use the purpose of gangue, improve the economic nature of unit.
Description
Technical field
The utility model relates to a kind of boiler structure, is specifically related to a kind of boiler structure for dedusting in the middle of burning gangue, belongs to boiler manfacturing technical field.
Background technology
China accumulates gangue and reaches more than 1,000,000,000 tons, also will discharge gangue 100,000,000 tons every year.In order to pollution abatement, from the sixties, a lot of country starts the disposal and utilization paying attention to gangue, and in current domestic power plant, the boiler of multifuel combustion gangue is CFBB substantially.CFBB is without pulverized coal preparation system, unit economy is capable on the low side for pulverized-coal fired boiler, and burner hearth sulfidation easily causes the thinning rear booster of water screen system, unit availability is on the low side relative to pulverized-coal fired boiler, but traditional pulverized-coal fired boiler is when multifuel combustion coal gangue fuel, because gangue calorific value is low, ash quantity is large, when mixing cash rate and being too high, ash quantity increases obviously, boiler combustion can be brought, heat transfer, fuel crushing, the series of problems of the aspects such as deslagging and the interior wearing and tearing of stove, the dust arrester of traditional pulverized-coal fired boiler is arranged between air preheater and smoke discharging pipe, in order to reduce the contaminant capacity of fume emission, and the gangue ature of coal particle used is thicker, the high-temperature flue gas that after burning, ash quantity is larger increases rapidly at back-end ductwork flow velocity, add that boiler reversal chamber temperature reduces the abrasiveness enhancing of rear soot particle, the abrasiveness of high-temperature flue gas to pipelines that is heated such as back-end ductwork and back-end ductwork low temperature heating surfaces is very big, therefore just in air preheater front end should carry out dedusting to flue gas soot particle and reduce velocity of flue gas, reduce the measures such as back-end surfaces to reach the effect reduced wear, therefore, urgently design a kind of structure reducing the wearing and tearing of boiler tail pipeline, pulverized-coal fired boiler is applied to reach the object of multifuel combustion gangue with this.
Utility model content
The utility model is problem large to the abrasiveness of back-end ductwork and other pipelines when solving existing powder coal boiler mixed burning gangue, and then provides a kind of boiler structure for dedusting in the middle of burning gangue.
The utility model for solving the problems of the technologies described above taked technical scheme is:
A kind of boiler structure for dedusting in the middle of burning gangue of the present utility model, comprise back-end ductwork, back-end ductwork low temperature heating surface and air preheater, described back-end ductwork is connected with back-end ductwork low temperature heating surface, back-end ductwork low temperature heating surface is connected with air preheater, the burner hearth of boiler is provided with two back-end ductworks and is communicated with back-end ductwork low temperature heating surface, every bar back-end ductwork connects respectively a multi-pipe dust removing device, described multi-pipe dust removing device is connected with back-end ductwork with blast pipe respectively by air inlet pipe.
A kind of boiler structure for dedusting in the middle of burning gangue of such scheme, break traditions the installation site of boiler dust remover, in the centre position of boiler, namely the back-end ductwork between burner hearth and back-end ductwork low temperature heating surface increases multi-pipe dust removing device, flue gas is extracted from boiler back end ductwork, send back to again in stove after multitube separator dedusting, reduce the wearing and tearing of back-end surfaces and flue.
Design further scheme: in order to play the effect of air preheater further, air preheater is rotary regenerative air preheater.
The beneficial effects of the utility model: the object using the pulverized-coal fired boiler of gangue based on exploitation, the abrasiveness reducing rear soot particle due to boiler reversal chamber temperature strengthens, a kind of boiler structure for the middle dedusting of burning gangue of the present utility model have employed by extracting flue gas from boiler back end ductwork, send back to again in stove after multitube separator dedusting, reduce the wearing and tearing of back-end surfaces and flue, ensure the safety and economic operation of unit, the pulverized-coal fired boiler technology of gangue is used by exploitation, coal can be effectively utilized and grind the generating of stone resource, reduce cost of electricity-generating, be conducive to economize energy and environmental protection, there is good social benefit and considerable economic benefit.Optimize pulverized-coal fired boiler runs ature of coal adaptability to scene simultaneously, the operational factor and unit operation reliability ensureing boiler is played an important role.
Accompanying drawing explanation
Fig. 1 is sectional side elevation of the present utility model;
Fig. 2 is top view of the present utility model;
In figure: 1-back-end ductwork, 2-multi-pipe dust removing device, 4-back-end ductwork low temperature heating surface, 5-air preheater, 6-air inlet pipe, 7-blast pipe.
Detailed description of the invention
The detailed description of the invention that the utility model provides is as follows:
Detailed description of the invention: as depicted in figs. 1 and 2, a kind of boiler structure for dedusting in the middle of burning gangue of the present utility model, comprise back-end ductwork 1, back-end ductwork low temperature heating surface 4 and air preheater 5, described back-end ductwork 1 is connected with back-end ductwork low temperature heating surface 4, back-end ductwork low temperature heating surface 4 is connected with air preheater 5, described air preheater 5 is rotary regenerative air preheater, the burner hearth of boiler is provided with two back-end ductworks 1 and is communicated with back-end ductwork low temperature heating surface 4, every bar back-end ductwork 1 connects respectively a multi-pipe dust removing device 2, described multi-pipe dust removing device 2 is connected with back-end ductwork 1 with blast pipe 7 respectively by air inlet pipe 6.
Multi-pipe dust removing device 2 extracts flue gas by air inlet pipe 6 from boiler back end ductwork 1; back-end ductwork is discharged to by blast pipe 7 again after bulky grain dust removes by multi-pipe dust removing device 2; send back in stove by smoke circulating system, reduce the wearing and tearing of back-end surfaces and flue.Appropriate design boiler furnace, burner structure etc., comprise intensification back-end ductwork simultaneously, reduces cigarette speed, reduce wear; Increase back-end ductwork low temperature heating surface pitch; Increase low temperature heating surface abrasion-proof cover plate.Reach the object that can realize adopting Π type Fired Pulverized Coal Boilers for Burning gangue, improve unit economy.
The exemplary illustration of present embodiment just to this patent, does not limit its protection domain, and those skilled in the art can also change, as long as no the Spirit Essence exceeding this patent, in the protection domain of this patent its local.
Claims (2)
1. the boiler structure for dedusting in the middle of burning gangue, comprise back-end ductwork (1), back-end ductwork low temperature heating surface (4) and air preheater (5), described back-end ductwork (1) is connected with back-end ductwork low temperature heating surface (4), back-end ductwork low temperature heating surface (4) is connected with air preheater (5), it is characterized in that: the burner hearth of boiler is provided with two back-end ductworks (1) and is communicated with back-end ductwork low temperature heating surface (4), every bar back-end ductwork (1) connects respectively a multi-pipe dust removing device (2), described multi-pipe dust removing device (2) is connected with back-end ductwork (1) with blast pipe (7) respectively by air inlet pipe (6).
2. a kind of boiler structure for dedusting in the middle of burning gangue according to claim 1, is characterized in that: described air preheater (5) is rotary regenerative air preheater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521068303.3U CN205208551U (en) | 2015-12-18 | 2015-12-18 | A boiler structure for burning remove dust in middle of gangue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521068303.3U CN205208551U (en) | 2015-12-18 | 2015-12-18 | A boiler structure for burning remove dust in middle of gangue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205208551U true CN205208551U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521068303.3U Active CN205208551U (en) | 2015-12-18 | 2015-12-18 | A boiler structure for burning remove dust in middle of gangue |
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| CN (1) | CN205208551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514640A (en) * | 2017-09-25 | 2017-12-26 | 浙江伟明环保股份有限公司 | The built-in garbage burning boiler of gas cleaning |
-
2015
- 2015-12-18 CN CN201521068303.3U patent/CN205208551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514640A (en) * | 2017-09-25 | 2017-12-26 | 浙江伟明环保股份有限公司 | The built-in garbage burning boiler of gas cleaning |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |