CN201697109U - Compound combustion device for boiler - Google Patents
Compound combustion device for boiler Download PDFInfo
- Publication number
- CN201697109U CN201697109U CN2010202255835U CN201020225583U CN201697109U CN 201697109 U CN201697109 U CN 201697109U CN 2010202255835 U CN2010202255835 U CN 2010202255835U CN 201020225583 U CN201020225583 U CN 201020225583U CN 201697109 U CN201697109 U CN 201697109U
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- coal
- boiler
- grate
- fan
- flame
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Abstract
The utility model discloses a compound combustion device for a boiler, which comprises a spiral coal feeder driven by a chain, a multistage fan-type coal mill, a blower, a combustor located in the boiler, as well as a pipeline. The device adopts the technical scheme that coal is pulverized through the fan-type coal mill; the pulverized coal and secondary air are sent by the blower to the pulverized coal delivery pipeline, enter the corundum ceramic combustor through the pulverized coal delivery pipeline, and are then fed into a boiler furnace from the corundum ceramic combustor through corundum ceramic combustor distribution holes; and the pulverized coal is ignited in the flame of the fire bed of the grate boiler, and burned in a suspended manner in the center of the flame inside the grate boiler furnace to form high-temperature flame. The utility model can improve the burn-off rate of bunker coal, so as to save the coal to the largest extent.
Description
Technical field
The utility model relates to a kind of burner of boiler, relates in particular to a kind of compound combustion device of boiler.
Background technology
Chain-grate boiler is a kind of type of furnace commonly used in the heating industry, is extensive use of in the heating industry of China, at present most this kind combustion systems that adopt of the following coal-fired hot-water boiler of following steam boiler of 75t/h and 58MW.Though chain-grate boiler is a kind of equipment preferably, but in use there is certain shortcoming, mainly be changeable when coal, when ature of coal is bad, cause undercapacity, the thermal efficiency is on the low side, move that actual exerting oneself is generally about 60% of nominal output when better, the minority operation bad only about 50%, BTHE is low.
During chain-grate boiler is transformed, most to transform " pot ", and it is less to the transformation of stove, though increased some layering coal supply apparatus in these several years, the grate of chain-grate boiler so burnt into gone that some improve, but once the combustion system of combustion did not obtain the change of essence, particularly when coal seam thickness greatly the time, anoxic in the insufficient and flame of fire burns, oxidation of coal is can not continue to be oxidized to CO behind the CO
2, boiler combustion can not get the essence transformation.Therefore, traditional combustion system is very limited to the raising of boiler combustion efficiency.
The utility model content
The purpose of this utility model provides a kind of compound combustion device that can strengthen the stove combustion process, improve the boiler of boiler combustion efficiency and coal adaptability.
Above-mentioned purpose of the present utility model is to realize like this, a kind of compound combustion device of boiler, comprise spiral coal feeder, multistage fan formula coal pulverizer, fan, the conveyance conduit that drives by chain and be positioned at the burner of stove, wherein said fan is installed within the described multistage fan formula coal pulverizer, and described conveyance conduit is connected between described burner and the described multistage fan formula coal pulverizer.
From Theory of Boiler Combustion as can be known, keeping the sufficiently high temperature of burner hearth is the most important condition that guarantees the boiler good combustion, and furnace temperature height then coal is smooth in stove inner drying, destructive distillation, and the time that reaches ignition temperature is short, catches fire easily.Furnace temperature is high more, and is favourable more to catching fire of coal, and coal adaptability is also just good more.In the combustion system of existing coal-burning boiler, the furnace temperature of coal-powder boiler is the highest, and coal adaptability is best, and burning is more complete, thermal efficiency height.The mechanism that chain-grate boiler adds coal dust suspension compound combustion mode is that these two kinds different combustion systems of traveling-grate stoker and coal dust are organically combined, and is shared on a stove, assists each other, utilizes each other, maximizes favourable factors and minimizes unfavourable ones.In combustion process, coal dust is lighted by the fire grate grate, the thermal-flame that coal dust firing forms has improved fire box temperature, for catching fire, the coal seam on the traveling-grate stoker provides abundant thermal source, change the situation that the past chain furnace relies on the chimney arch heat radiation to ignite merely, improved the ignition condition of new coal on the traveling-grate stoker greatly; Simultaneously, the grate of smooth combustion is again the reliable thermal source that breeze airflow catches fire, and can guarantee that coal dust in time stably catches fire.On the other hand, compound combustion equipment to the air-supply of burner hearth central combustion zone, has improved burner hearth center oxygen content simultaneously when coal supply in burner hearth, makes the CO in the boiler central combustion zone continue to combine with oxygen, is oxidized to CO
2, continue to emit heat.
Therefore, the utlity model has following advantage:
Can improve the burning of coal rate, coal is saved on maximizing ground; Can improve the chain-grate boiler fire box temperature, promote that grate catches fire and burns; Can provide sufficient oxygen part to central combustion zone in the burner hearth by the secondary air distribution, make the CO of burner hearth central combustion zone continue to be oxidized to CO
2, both reduced CO content in smoke, improved efficiency of combustion again, further save coal.
Description of drawings
Fig. 1 is the structural representation that shows the compound combustion device of a kind of boiler of the utility model;
Fig. 2 is the A of Fig. 1---the A profile;
Fig. 3 is the B of Fig. 1---the B profile.
Description of reference numerals: 1-motor; The 2-belt; 3-chain-grate boiler suspension firing equipment coal bunker; The 4-gearbox; The 5-belt; The multistage fan formula of 6-coal pulverizer main shaft; The 7-chain; 8-spiral coal feeder; Three grades of multistage fans of 9-formula tup; The 10-fan; The 11-conveyance conduit; The 12-burner; The 13-rear arch; The 14-face arch; The 15-coal bunker; The 20-fire grate.
The specific embodiment
Referring to Fig. 1, the compound combustion device of a kind of boiler of the utility model comprises spiral coal feeder 8, multistage fan formula coal pulverizer, fan 10, conveyance conduit 11 that is driven by chain 7 and the burner 12 that is positioned at stove, wherein said fan 10 is installed within the described multistage coal pulverizer, and described conveyance conduit 11 is connected between described burner 12 and the described multistage fan formula coal pulverizer.
Referring to Fig. 1 left side, above-mentioned multistage fan formula coal pulverizer comprises: by the coal pulverizer main shaft 6 of motor 1 driving; And three grades of multistages that are installed on the coal pulverizer main shaft 6 are fanned formula tups 9.
In addition, burner 3 of the present utility model is the corundum ceramic burner.
Be elaborated below in conjunction with Fig. 1 to 3 pair of principle of the present utility model and operation.
After the chain-grate boiler operation, coal bunker 15 is to traveling-grate stoker 20 coal supplies, and coal grate firing on fire grate 20 forms grate.After grate opens fire, start the utility model device, motor 1 drives multistage fan formula coal pulverizer main shaft 6 by belt 2 and rotates, and main shaft 6 drives gearbox 4 by belt 5.Gearbox 4 drives spiral coal feeder 8 by chain 7 and rotates, and the coal in the utility model device coal bunker 3 is delivered in the multistage fan formula coal pulverizer.In multistage fan formula coal pulverizer, the running under main shaft 6 drives of three grades of multistage fan formula tups 9, after coal being made the coal dust of granularity 80～120, by fan 10 coal dust and secondary wind are delivered to corundum ceramic burner 12 in the stove by conveyance conduit 11 with coal dust and secondary wind, coal dust and secondary wind by corundum ceramic burner 12 in the boiler flame center with coal dust and secondary wind directly sprays or churning (directly spray or churning are determined according to concrete boiler capacity and chamber structure), fine coal is lighted by grate flame, suspension burning in center forms and sprays thermal-flame in stove, with the coal dust after-flame.The hyperthermia radiation that thermal-flame forms catches fire and the pyrolysis temperature condition for the grate firing on the fire grate 20 provides by boiler face arch 14, rear arch 13, improves grate firing efficient.
Claims (2)
1. the compound combustion device of a boiler, the burner that it is characterized in that comprising spiral coal feeder, multistage fan formula coal pulverizer, fan, the conveyance conduit that drives by chain and be positioned at stove, wherein said fan is installed within the described multistage fan formula coal pulverizer, and described conveyance conduit is connected between described burner and the described multistage fan formula coal pulverizer.
2. the compound combustion device of a kind of boiler according to claim 1 is characterized in that described multistage fan formula coal pulverizer comprises: by electric motor driven coal pulverizer main shaft; And three grades of multistages that are installed on the described coal pulverizer main shaft are fanned the formula tups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202255835U CN201697109U (en) | 2010-06-07 | 2010-06-07 | Compound combustion device for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202255835U CN201697109U (en) | 2010-06-07 | 2010-06-07 | Compound combustion device for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697109U true CN201697109U (en) | 2011-01-05 |
Family
ID=43398355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202255835U Expired - Fee Related CN201697109U (en) | 2010-06-07 | 2010-06-07 | Compound combustion device for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697109U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425786A (en) * | 2011-11-24 | 2012-04-25 | 舒瑞 | Combustion method and device for pulverized coal fired boiler |
| CN102901089A (en) * | 2012-09-20 | 2013-01-30 | 上海工业锅炉研究所 | Pulverized coal co-combustion system of industrial boiler |
| CN105180154A (en) * | 2015-09-28 | 2015-12-23 | 浙江德清艾卡蒙特涂装设备有限公司 | Biomass energy transformation device for coal fired boiler |
| CN107726300A (en) * | 2017-10-27 | 2018-02-23 | 宁波市江北区伊人宝贸易有限公司 | A kind of energy-saving combustion boiler |
-
2010
- 2010-06-07 CN CN2010202255835U patent/CN201697109U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425786A (en) * | 2011-11-24 | 2012-04-25 | 舒瑞 | Combustion method and device for pulverized coal fired boiler |
| CN102901089A (en) * | 2012-09-20 | 2013-01-30 | 上海工业锅炉研究所 | Pulverized coal co-combustion system of industrial boiler |
| CN105180154A (en) * | 2015-09-28 | 2015-12-23 | 浙江德清艾卡蒙特涂装设备有限公司 | Biomass energy transformation device for coal fired boiler |
| CN107726300A (en) * | 2017-10-27 | 2018-02-23 | 宁波市江北区伊人宝贸易有限公司 | A kind of energy-saving combustion boiler |
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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: ANHUI SCITRIUMPHY RENEWABLE UTILIZATION CO., LTD. Free format text: FORMER OWNER: ANHUI ZHONGQI ENERGY MANAGEMENT CO., LTD. Effective date: 20120530 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120530 Address after: Sunshore information industry base in Hefei city of Anhui province high tech Zone 230088 No. 1 building 506, room 523 Patentee after: Anhui Kejie Renewable Energy Co., Ltd. Address before: 230088, Hefei high tech Zone Innovation Avenue 425, the province's scientific and technological achievements demonstration base A, room 306 Patentee before: Anhui Zhongqi Energy Management Co., Ltd. |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Zhongjie Energy-Saving Environmental Protection Science & Technology Co., Ltd. Assignor: Anhui Kejie Renewable Energy Co., Ltd. Contract record no.: 2013340000078 Denomination of utility model: Compound combustion device for boiler Granted publication date: 20110105 License type: Exclusive License Record date: 20130530 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Anhui Zhongjie Energy-Saving Environmental Protection Science & Technology Co., Ltd. Assignor: Anhui Kejie Renewable Energy Co., Ltd. Contract record no.: 2013340000078 Date of cancellation: 20130627 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20150607 |
|
| EXPY | Termination of patent right or utility model |