CN203099816U - Two-rotational-flow industrial boiler pulverized coal burner with back-flushing device - Google Patents
Two-rotational-flow industrial boiler pulverized coal burner with back-flushing device Download PDFInfo
- Publication number
- CN203099816U CN203099816U CN201320038741.XU CN201320038741U CN203099816U CN 203099816 U CN203099816 U CN 203099816U CN 201320038741 U CN201320038741 U CN 201320038741U CN 203099816 U CN203099816 U CN 203099816U
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- wind
- burner
- air
- chamber
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 239000003245 coal Substances 0.000 title claims abstract description 17
- 238000011010 flushing procedure Methods 0.000 title abstract 4
- 238000002485 combustion reaction Methods 0.000 claims abstract description 37
- 238000007664 blowing Methods 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 abstract description 3
- 239000010432 diamond Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 14
- 238000010304 firing Methods 0.000 description 11
- 238000007599 discharging Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000003134 recirculating effect Effects 0.000 description 3
- 239000002802 bituminous coal Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
Abstract
The utility model discloses a two-rotational-flow industrial boiler pulverized coal burner with a back-flushing device. The burner is in a cylinder shape, the outer surface of the burner is a shell body, and a coaxial diamond circular tube is fixed in the shell body and divides the shell body into a wind box and a combustion chamber. A secondary air pipe is connected with the wind box, and a secondary wind baffle is arranged in the connection place of the secondary air pipe and the wind box. A wind box baffle is arranged in the middle of the wind box and divides the wind box into a front wind chamber and a back wind chamber, the front wind chamber is communicated with the combustion chamber through a primary rotational flow device, the back wind chamber is communicated with the combustion chamber through a secondary rotational flow device, the primary rotational flow device is connected with a pull rod and can move frontward and backward, and the secondary rotational flow device is fixed on the wind outlet place of the combustion chamber. A back-flushing pipeline is fixed on the back portion of the combustion chamber, and the direction of the back-flushing outlet is opposite to the direction of a primary wind outlet. The burner can improve the burning efficiency of pulverized coal, reduce emission of NOx, and achieve effects of energy consumption and emission reduction.
Description
Technical field
The utility model relates to a kind of burner, relates in particular to a kind of raising efficiency of combustion, reduces NO
xThe Industrial Boiler coal burner of discharging.
Background technology
China accounts for 1/4th of coal in China total amount consumed in the coal consumption with coal-burned industrial boiler at present, and mostly is being long old boiler service life with Industrial Boiler, and efficient is low, pollutes heavy.In the prior art, coal dust efficient burning technology and low NO
xCombustion technology is two kinds of technology of contradiction each other.Reduce NO
xGenerate be to control the temperature in coal dust firing zone with discharging at all can not be too high, but under the low-temperature burning condition, the burn-off rate of coal dust is subjected to very big influence.Therefore, how to coordinate these two technology and make it to reach the integrated application optimum efficiency, can either guarantee the stability of coal powder ignition, lower ignition temperature is arranged again, having guarantee after-flame burning time sufficiently long and at a certain temperature simultaneously, is exactly the key of industrial coal powder boiler burner design.
Summary of the invention
At the problem of above existence, the purpose of this utility model is to provide a kind of bispin stream burner that has the blow-back device, and this burner can improve coal dust firing efficient, reduces NO
xDischarging, reach the effect of energy-saving and emission-reduction.
The technical solution adopted in the utility model is: a kind of bispin stream Industrial Boiler coal burner that has back-blowing device, and this burner is cylindric, and its outer surface is a housing, fixes a coaxial rhombus pipe in the housing, and housing is divided into bellows and combustion chamber; One time airduct communicates with the combustion chamber, and secondary air channel links to each other with bellows, and secondary air channel and bellows connecting place are provided with the secondary windshield plate; In the middle of the bellows, the bellows baffle plate is set, bellows are divided into former and later two air compartments, preceding air compartment communicates with the combustion chamber by the one-level swirl-flow devices, and back air compartment communicates with the combustion chamber by the secondary swirl-flow devices; The one-level swirl-flow devices links to each other with pull bar, can move forward and backward, and the secondary swirl-flow devices then is fixed in the combustor exit place; The reverse-blow pipe road is fixed on the rear portion, combustion chamber, and blowback wind Way out is opposite with a wind Way out.
The beneficial effect that the utlity model has is:
1, the inner diamond shaped in combustion chamber of the present utility model increases disturbance, has improved burning condition, improves efficiency of combustion.
2, burner of the present utility model has removable one-level swirl-flow devices, by mobile one-level swirl-flow devices, can change the ratio of direct current and rotational flow gas, improves gas flow field situation in the combustion chamber, overheavy firing.
3, burner of the present utility model is provided with fixedly swirl-flow devices in the exit, further increases the combustion-gas flow level of disruption, the required oxygen of aftercombustion simultaneously.
4, air compartment before and after burner wind-box of the present utility model is divided into by baffle plate is sent the secondary air separating level into the combustion chamber, and air compartment air quantity size before and after changing by controllable register helps reducing NO
xGeneration and discharging.
5, burner of the present utility model is provided with reverse-blow pipe, utilizes air-flow to form an invisible shield body, changes one time the general mood flow path direction, forms the recirculating zone in the combustion chamber, makes that coal dust is more prone to light.By the burning actual conditions, can adjust gas flow rate in the blow-back airduct, adjust the air-flow size.
6, burner coal adaptability of the present utility model is wide, not only can use high-quality bituminous coal, and can use low-grade coal.
7, the transformation of burner of the present utility model is convenient, and required change is little.
8, burner modulability of the present utility model is better.
Description of drawings
Fig. 1 is a kind of structural representation that has the bispin stream Industrial Boiler coal burner of back-blowing device;
Among the figure: airduct 1, pull bar 2, one-level swirl-flow devices 3, secondary air channel 4, secondary windshield plate 5, bellows 6, housing 7, bellows baffle plate 8, combustion chamber 9, secondary swirl-flow devices 10, reverse-blow pipe road 11.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, the utility model is a kind of bispin stream Industrial Boiler coal burner that has back-blowing device, and this burner is cylindric, and its outer surface is a housing 7, fixes a coaxial rhombus pipe in the housing 7, and housing 1 is divided into bellows 6 and combustion chamber 9; One time airduct 1 communicates with combustion chamber 9, and secondary air channel 4 links to each other with bellows 6, and secondary air channel 4 is provided with secondary windshield plate 4 with the bellows connecting place; In the middle of the bellows 6, bellows baffle plate 8 is set, bellows 6 are divided into former and later two air compartments, preceding air compartment communicates with combustion chamber 9 by one-level swirl-flow devices 3, and back air compartment communicates with combustion chamber 9 by secondary swirl-flow devices 10; One-level swirl-flow devices 3 links to each other with pull bar 2, can move forward and backward, and 10 of secondary swirl-flow devices are fixed in the burner outlet place; Reverse-blow pipe road 11 is fixed on 9 rear portions, combustion chamber, and blowback wind Way out is opposite with a wind Way out.
The course of work of the present utility model is as follows: after opening stove, open blower fan, one time the wind breeze airflow enters combustion chamber 9 through an airduct 1, and the combustion gas of having been burnt is lighted, and burns in combustion chamber 9.Open secondary air channel 4 simultaneously, regulate secondary windshield plate 5 and bellows baffle plate 8, air compartment air quantity size before and after changing.At this moment, secondary air separating does not enter combustion chamber 9 by one-level swirl-flow devices 3, secondary swirl-flow devices 10, realizes the air classification supply.In combustion chamber 9, coal dust firing early stage, 3 of one-level swirl-flow devices provide coal dust firing required part oxygen, make burning be in the relative anoxycausis stage, thereby suppress NO
xGenerate and discharging.At the combustor exit place, secondary wind enters the combustion chamber through secondary swirl-flow devices 10, replenishes the required oxygen of coal dust firing, promotes coal dust firing, improves the coal dust burn-off rate, realizes the effect of energy-saving and emission-reduction.Meanwhile, open reverse-blow pipe 11, the breeze airflow that liquidates forms a certain size gas shield body, in airduct 1 exit, forms the recirculating zone, quickens coal dust firing, simultaneously, replenishes the required oxygen of coal dust firing.By changing air velocity in the reverse-blow pipe 11, can change the size of air-flow shield body, thereby change the recirculating zone size, adjust the coal dust firing high-temperature area.Combustion chamber 9 diamond shaped of described burner can increase flow perturbation, promote burning.In the combustion process, can pass through pull bar 3, regulate the ratio of direct current wind and eddy flow wind, change coal dust firing situation in the combustion chamber.Burner coal adaptability of the present utility model is wide, not only can use high-quality bituminous coal, and can use low-grade coal, and applicability is wide.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320038741.XU CN203099816U (en) | 2013-01-24 | 2013-01-24 | Two-rotational-flow industrial boiler pulverized coal burner with back-flushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320038741.XU CN203099816U (en) | 2013-01-24 | 2013-01-24 | Two-rotational-flow industrial boiler pulverized coal burner with back-flushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203099816U true CN203099816U (en) | 2013-07-31 |
Family
ID=48851214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320038741.XU Expired - Lifetime CN203099816U (en) | 2013-01-24 | 2013-01-24 | Two-rotational-flow industrial boiler pulverized coal burner with back-flushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203099816U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123113A (en) * | 2013-01-24 | 2013-05-29 | 孙公钢 | Double-rotational-flow industrial boiler pulverized coal burner with back-blowing device |
| CN104302976A (en) * | 2013-05-09 | 2015-01-21 | 施政 | System And Method For Small-Scale Combustion Of Pulverized Solid Fuels |
| WO2016179909A1 (en) * | 2015-05-14 | 2016-11-17 | Zheng Shi | Burner design for pulverized coal-fired boilers using minimal ignition fuel |
-
2013
- 2013-01-24 CN CN201320038741.XU patent/CN203099816U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123113A (en) * | 2013-01-24 | 2013-05-29 | 孙公钢 | Double-rotational-flow industrial boiler pulverized coal burner with back-blowing device |
| CN104302976A (en) * | 2013-05-09 | 2015-01-21 | 施政 | System And Method For Small-Scale Combustion Of Pulverized Solid Fuels |
| CN104302976B (en) * | 2013-05-09 | 2017-05-17 | 施政 | System And Method For Small-Scale Combustion Of Pulverized Solid Fuels |
| WO2016179909A1 (en) * | 2015-05-14 | 2016-11-17 | Zheng Shi | Burner design for pulverized coal-fired boilers using minimal ignition fuel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU SEEKING ENVIRONMENTAL PROTECTION TECHONLO Free format text: FORMER OWNER: ZHUO LEI Effective date: 20140212 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310011 HANGZHOU, ZHEJIANG PROVINCE TO: 310012 HANGZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140212 Address after: 310012, room 1506, C, Zijin Plaza, 701 Pier Road, Hangzhou, Zhejiang, Xihu District Patentee after: HANGZHOU SEEKING ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 502, room 2, unit 23, Hebei village, Gongshu District, Hangzhou, Zhejiang 310011, China Patentee before: Sun Gonggang |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
|
| CX01 | Expiry of patent term |