CN202915327U - Mixing co-firing furnace capable of combusting superfine pulverized coal - Google Patents
Mixing co-firing furnace capable of combusting superfine pulverized coal Download PDFInfo
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- CN202915327U CN202915327U CN 201220645065 CN201220645065U CN202915327U CN 202915327 U CN202915327 U CN 202915327U CN 201220645065 CN201220645065 CN 201220645065 CN 201220645065 U CN201220645065 U CN 201220645065U CN 202915327 U CN202915327 U CN 202915327U
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- firing furnace
- pulverized coal
- combustion furnace
- boiler
- mixed combustion
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Abstract
A mixing co-firing furnace capable of combusting superfine pulverized coal is composed of a wind chamber, a co-firing furnace, a boiler, a co-firing furnace flue outlet, a cyclone dust collector, a steam superheater, an economizer and a return feeder and is characterized in that the lower portion of the co-firing furnace is provided with the wind chamber which is capable of combusting waste residues and a combustion device which is composed of a wind-distribution plate and a wind cap, the middle lower portion of the co-firing furnace is a pulverized coal combustion area, pulverized coal is delivered to the pulverized coal combustion area which is kept to be in a high-temperature combustion state through a fine pulverized coal inlet in a pneumatic transmission mode, the boiler is arranged above the co-firing furnace, the boiler is composed of a boiler barrel, the steam superheater, the economizer and an air pre-heater, the co-firing furnace is connected with the cyclone dust collector through the co-firing furnace flue outlet, the return feeder is arranged under the cyclone dust collector, and the return feeder is connected with a slag combustion area through pipelines. The co-firing furnace capable of combusting superfine pulverized coal guarantees that slag, pulverized coal and combustive waste gas can be fully combusted in the whole co-firing furnace.
Description
Technical field:
The utility model belongs to combination burner, in particular mixed combustion offgases, waste residue, burning microfine coal (granularity≤30um) the mixing mixed combustion furnace.
Background technology:
Existing combination burner is two kinds in original fluidized-bed combustion boiler and three wastes stove, they can only burn the larger coal of granularity, and can't burn for the fine breeze of granularity less than 30um, a large amount of fine breezes that a lot of Coal Chemical Industry manufacturing enterprise is got rid of can't be processed, the significant wastage and the coal dust pollution on the environment that cause the energy, existing three wastes furnace interior refractory material is many, refractory material in use easily occurs come off or damage phenomenon, causes frequent shutdown maintenance.
Summary of the invention:
The problem that exists in order to overcome prior art, the utility model provides a kind of microfine coal that can burn, and (combination burner of granularity≤30um), present technique adopts the method completing combustion granularity of large burner hearth stratified combustion less than fine breeze, waste gas and the low-calorie slag of 30um.Present technique adopts the combustion chamber of boiler Mohs wall construction, has not only cancelled the utilization of a large amount of refractory materials, has reduced cost of investment, and has stopped the generation that original three wastes stove combustion liner damages phenomenon.
The utility model is achieved through the following technical solutions its goal of the invention.
The combination burner of microfine coal can burn, by air compartment, mixed combustion furnace, boiler, the mixed combustion furnace flue outlet, cyclone dust collectors, steam superheater, economizer, material returning device consists of, it is characterized in that: the bottom of mixed combustion furnace is the air compartment of incendivity waste residue and the burner of air distribution plate and blast cap formation, the middle and lower part of mixed combustion furnace is the coal dust firing district, the mode that coal dust is carried with strength by the fine breeze import is transported in the coal dust firing district that keeps the high-temp combustion state, the mixed combustion furnace top is provided with boiler, boiler is by drum, steam superheater, economizer and air preheater consist of, mixed combustion furnace is connected with cyclone dust collectors by the mixed combustion furnace flue outlet, the cyclone dust collectors below is provided with material returning device, material returning device is connected with the cinder burning district by pipeline, the Secondary Air that comes with the Secondary Air pipeline mixes, wherein fine breeze import and secondary air inlet are according to entering with the horizontal cyclone direction in the burner hearth, fully mix with flue gas that the burning slag produces and jointly produce eddy flow, the high-temperature flue gas that makes coal dust and burnt, auxiliary air carries out sufficient mixing and burning, and has increased burning time; The waste gas that contains certain combustible component such as a small amount of carbon monoxide, hydrogen, methane enters the fuel gas buring district from the mixed burner of combustion gas, the mixed burner of combustion gas enters on the contrary according to lower floor's coal dust rotation direction that direction enters to combustion gas, fully mixes with the high-temp combustion flue gas of lower floor and burns.
The utility model is in order to guarantee slag, coal dust, combustible waste gas after-flame cmpletely in whole mixed combustion furnace, the lateral dimension of mixed combustion furnace and vertical dimension all are large-sized combustion furnace burner hearth, in order to can keep above three kinds of fuel that arranged enough burning times, make burning reach complete, thorough.
Description of drawings
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 is that the A-A of accompanying drawing 1 is to structural representation.
In the accompanying drawings, the 1st, air compartment, the 2nd, air distribution plate and blast cap, the 3rd, cinder burning district, the 4th, Secondary Air lower inlet, the 5th, slag import, the 6th, fine breeze import, the 7th, the Secondary Air upper inlet, the 8th, the coal dust firing district, the 9th, combustion gas mixes burner, the 10th, fuel gas buring district, the 11st, mixed combustion furnace, the 12nd, mixed combustion furnace flue outlet, the 13rd, drum, the 14th, cyclone dust collectors, the 15th, steam superheater, the 16th, economizer, the 17th, material returning device, the 18th, air preheater.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in the figure, the combination burner of microfine coal can burn, by air compartment 1, mixed combustion furnace 11, boiler, mixed combustion furnace flue outlet 12, cyclone dust collectors 14, steam superheater 15, economizer 16 and material returning device 17 consist of, it is characterized in that: the bottom of mixed combustion furnace is the air compartment 1 of incendivity waste residue and the burner of air distribution plate and blast cap 2 formations, the middle and lower part of mixed combustion furnace is coal dust firing district 8, the mode that coal dust is carried by fine breeze import 6 usefulness strengths is transported in the coal dust firing district 8 that keeps the high-temp combustion state, the mixed combustion furnace top is provided with boiler, boiler is by drum 13, steam superheater 15, economizer 16 and air preheater 18 consist of, mixed combustion furnace is connected with cyclone dust collectors 14 by mixed combustion furnace flue outlet 12, cyclone dust collectors 14 belows are provided with material returning device 17, material returning device 17 is connected with cinder burning district 3 by pipeline, the Secondary Air that comes with the Secondary Air pipeline mixes, wherein fine breeze import 6 and secondary air inlet are according to entering with the horizontal cyclone direction in the burner hearth, fully mix with flue gas that the burning slag produces and jointly produce eddy flow, the high-temperature flue gas that makes coal dust and burnt, auxiliary air carries out sufficient mixing and burning, and has increased burning time.
Slag, coal dust, incendivity waste gas through from bottom to top regional internal combustion of combustion furnace, mix, rise to burning-out zone and further realize again burning, make the high-temperature flue gas that reaches complete after-flame enter cyclone dust collectors from mixed combustion furnace flue outlet 12, thin grey dust in the middle of the high-temperature flue gas is separated, thin grey dust is fallen 17 material returning devices, thin grey dust is transported to send again carries out secondary cycle burning in the stove, solve the problem that thin ash amount is large, combustible content is high that conventional flow fluidized bed boiler and three wastes fire grate go out, really realized the purpose of energy-saving and emission-reduction; Carry out exchange heat through the high-temperature flue gas after the dedusting by 15 steam superheaters, 16 economizers, 18 air preheaters that the top of 14 cyclone dust collectors enters the boiler part, the steam that boiler produces is used for industrial production or cogeneration, and the low-temperature flue gas that is absorbed heat requires to enter atmosphere into chimney through reaching environment protection emission behind the desulfurization and dedusting.The phosphorus content of the slag that desulfurizing dust-collector is got rid of behind combination burner and the stove and thin ash≤2% can be used for producing the primary raw material of cement.
Claims (1)
1. the combination burner of microfine coal can burn, by air compartment, mixed combustion furnace, boiler, the mixed combustion furnace flue outlet, cyclone dust collectors, steam superheater, economizer, material returning device consists of, it is characterized in that: the bottom of mixed combustion furnace is the air compartment of incendivity waste residue and the burner of air distribution plate and blast cap formation, the middle and lower part of mixed combustion furnace is the coal dust firing district, the mode that coal dust is carried with strength by the fine breeze import is transported in the coal dust firing district that keeps the high-temp combustion state, the mixed combustion furnace top is provided with boiler, boiler is by drum, steam superheater, economizer and air preheater consist of, mixed combustion furnace is connected with cyclone dust collectors by the mixed combustion furnace flue outlet, the cyclone dust collectors below is provided with material returning device, and material returning device is connected with the cinder burning district by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645065 CN202915327U (en) | 2012-11-23 | 2012-11-23 | Mixing co-firing furnace capable of combusting superfine pulverized coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645065 CN202915327U (en) | 2012-11-23 | 2012-11-23 | Mixing co-firing furnace capable of combusting superfine pulverized coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202915327U true CN202915327U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220645065 Expired - Fee Related CN202915327U (en) | 2012-11-23 | 2012-11-23 | Mixing co-firing furnace capable of combusting superfine pulverized coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202915327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044633A (en) * | 2017-06-07 | 2017-08-15 | 中国科学院工程热物理研究所 | Vertical pulverized-coal fired boiler |
-
2012
- 2012-11-23 CN CN 201220645065 patent/CN202915327U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044633A (en) * | 2017-06-07 | 2017-08-15 | 中国科学院工程热物理研究所 | Vertical pulverized-coal fired boiler |
| CN107044633B (en) * | 2017-06-07 | 2023-09-29 | 中国科学院工程热物理研究所 | Vertical pulverized coal boiler |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20191123 |