CN206291225U - Fire coal boiler fume secondary recovery control oxygen flame retardant systems - Google Patents
Fire coal boiler fume secondary recovery control oxygen flame retardant systems Download PDFInfo
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- CN206291225U CN206291225U CN201621334101.3U CN201621334101U CN206291225U CN 206291225 U CN206291225 U CN 206291225U CN 201621334101 U CN201621334101 U CN 201621334101U CN 206291225 U CN206291225 U CN 206291225U
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Abstract
The utility model belongs to discharged from coal-fired boiler technical field, specifically a kind of fire coal boiler fume secondary recovery control oxygen flame retardant systems.Including coal-burning boiler, hot air duct, coal briquette dryer, discharge duct, waste gas discharge chimney and exhaust gas recovery conduit, wherein the waste discharge gas port of coal-burning boiler is connected by hot air duct with the air inlet of coal briquette dryer, the exhaust outlet of coal briquette dryer is connected by discharge duct with the bottom inlet of waste gas discharge chimney, waste gas discharge chimney is provided with electric butterfly valve b, the side wall of waste gas discharge chimney is provided with the waste gas recovery mouthful below electric butterfly valve b, and waste gas recovery mouthful is connected by exhaust gas recovery conduit with the burner hearth of coal-burning boiler.The utility model is by the CO in the flue gas for reclaiming discharged from coal-fired boiler2Send back in coal-burning boiler, realize control oxygen pattern, the burning degree of coal is reduced to prevent oxygen into the method in stove, i.e., need not subtract coal, slag need not be added again, reduce live load, saved cost of labor.
Description
Technical field
The utility model belongs to discharged from coal-fired boiler technical field, specifically a kind of fire coal boiler fume secondary recovery
Control oxygen flame retardant systems.
Background technology
The flue gas produced after common coal-fired boiler combustion is directly discharged to air, the no dust catcher device of major part, to ring
Bring new pollution sources and discharge capacity in border.Common coal-burning boiler in the control of ignition temperature, typically using following measures：(1)
Coal-supplying amount is reduced, reduces the wind supply quantity of blower fan to realize reducing ignition temperature；(2) a certain proportion of waste slag is added to reduce combustion
The ratio of coal, realizes that banking is acted on, and in turn results in temperature reduction.No matter any cool-down method, it is good the purpose is to destroy
Fired state, makes coal to continue fully burning, the combustion efficiency of coal is actually reduced, while forming black smoke
Coal is not exclusively grilled thoroughly, cause certain waste.Common coal-burning boiler is when ignition temperature is recovered, it usually needs when more long
Between heat up, then carry out the operating method of " the big coal of strong wind ", bring having a strong impact on for big rise and big fall to system temperature.
Utility model content
Regarding to the issue above, the purpose of this utility model is that a kind of fire coal boiler fume secondary recovery control oxygen of offer is fire-retardant
System.To solve prior art the waste that causes and to system temperature big rise and big fall are brought when the burning degree of coal is reduced
The problem having a strong impact on.
To achieve these goals, the utility model uses following technical scheme：
A kind of fire coal boiler fume secondary recovery control oxygen flame retardant systems, including the drying of coal-burning boiler, hot air duct, coal briquette
The waste discharge gas port of machine, discharge duct, waste gas discharge chimney and exhaust gas recovery conduit, wherein coal-burning boiler passes through hot air duct and coal
The air inlet connection of ball dryer, the exhaust outlet of the coal briquette dryer is entered by discharge duct with the bottom of waste gas discharge chimney
Mouth connection, the waste gas discharge chimney is provided with electric butterfly valve b, and the side wall of the waste gas discharge chimney is provided with positioned at electronic butterfly
Waste gas recovery mouthful below valve b, the waste gas recovery mouthful is connected by exhaust gas recovery conduit with the burner hearth of the coal-burning boiler.
Hand-operated butterfly valve and centrifugal blower a are provided with the air inlet of the coal briquette dryer.
Heat-insulation layer is provided with the outside of the hot air duct.
The air inlet of the coal briquette dryer is arranged at its bottom, and the exhaust outlet of the coal briquette dryer is arranged at its top
Portion.
The discharge duct is provided with deduster, be provided with the bottom inlet of the waste gas discharge chimney electric butterfly valve a and
Centrifugal blower b.
The exhaust gas recovery conduit has downward extension portion.
The upper end of the downward extension portion of the exhaust gas recovery conduit connects with the waste gas recovery mouthful of the waste gas discharge chimney
Logical, bottom is provided with row's condensate water device.
The electric butterfly valve b is arranged at the position away from top discharge mouthfuls four meters of the waste gas discharge chimney.
Distance of the waste gas recovery mouthful of the waste gas discharge chimney away from top discharge mouthful is five meters.
A diameter of 1200mm of the exhaust gas recovery conduit.
Advantage of the present utility model and beneficial effect are：
1. the utility model is by the CO in the flue gas for reclaiming discharged from coal-fired boiler2Send back in coal-burning boiler, realize control oxygen
Pattern, the burning degree of coal is reduced to prevent oxygen into the method in stove, i.e., need not subtract coal, and stove need not be added again
Slag, reduces live load, has saved cost of labor.
2. the utility model is recovering furnace temperature due to not carrying out the operations such as banking, mixed slag, when recovering normal combustion, shortens
60 minutes, improve the comprehensive utilization performance of boiler.
3. the utility model dries coal briquette product using the preheating of the flue gas of discharged from coal-fired boiler, so as to reach waste gas profit
With the purpose of, heat recovery.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is that the inside hot blast of coal briquette dryer in the utility model flows to schematic diagram.
In figure：1 is coal-burning boiler, and 2 is hot air duct, and 3 is Hand-operated butterfly valve, and 4 is centrifugal blower a, and 5 is coal briquette dryer,
51 is main air intake passage, and 52 is branch air channel, and 53 is hot blast discharge pipe, and 54 is dryer exhaust outlet, and 55 is main air exhaust passage, 56
It is dryer air inlet, 6 is discharge duct, and 7 is deduster, and 8 is electric butterfly valve a, and 9 is centrifugal blower b, and 10 is waste gas discharge cigarette
Chimney, 11 is electric butterfly valve b, and 12 is row's condensate water device, and 13 is exhaust gas recovery conduit, and 14 is downward extension portion.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings and specific implementation
Example is described in detail to the utility model.
As shown in figure 1, a kind of fire coal boiler fume secondary recovery control oxygen flame retardant systems that the utility model is provided, including combustion
Coal burning boiler 1, hot air duct 2, coal briquette dryer 5, discharge duct 6, waste gas discharge chimney 10 and exhaust gas recovery conduit 13, wherein firing
The waste discharge gas port of coal burning boiler 1 is connected by hot air duct 2 with the air inlet of coal briquette dryer 5, the exhaust of the coal briquette dryer 5
Mouth is connected by discharge duct 6 with the bottom inlet of waste gas discharge chimney 10, and the waste gas discharge chimney 10 is provided with electronic butterfly
Valve b11, the side wall of the waste gas discharge chimney 10 is provided with the waste gas recovery mouthful below electric butterfly valve b11, the waste gas
Recovery port is connected by exhaust gas recovery conduit 13 with the burner hearth of the coal-burning boiler 1.
The hot air duct 2 is provided with and is provided with Hand-operated butterfly valve 3 and centrifugal blower at the air inlet of coal briquette dryer 5
A4, the outside of the hot air duct 2 is provided with heat-insulation layer, in case the loss of heat.
As shown in Fig. 2 the bottom of the coal briquette dryer 5 is provided with multiple dryer air inlets 56, the coal briquette dryer 5
Top be provided with multiple dryer exhaust outlets 54.
Further, the bottom of the coal briquette dryer 5 is provided with the main air intake connected with multiple dryer air inlets 56 and leads to
Road 51, top is provided with the main air exhaust passage 55 connected with multiple dryer exhaust outlets 54, the main air intake passage 51 and warm-air pipe
Road 2 is connected, and the main air exhaust passage 55 is connected with discharge duct 6.
The multiple branch air channels 52 for being connected with multiple dryer air inlets 56 respectively are provided with the coal briquette dryer 5, respectively
Multiple hot blast discharge pipes 53 are connected with branch air channel 52 along its length, multiple air-out are distributed with each hot blast discharge pipe 53
Hole.
The coal briquette product in coal briquette dryer 5 is dried using the preheating of the flue gas of the discharge of coal-burning boiler 1, it is useless so as to reach
The first time utilization of gas and the purpose of heat recovery.
The discharge duct 6 is provided with deduster 7, and electric butterfly valve is provided with the bottom inlet of the waste gas discharge chimney 10
A8 and centrifugal blower b9.
The exhaust gas recovery conduit 13 has downward extension portion 14, and the upper end of the downward extension portion 14 is useless with described
The waste gas recovery mouthful connection of gas blowdown stack 10, bottom is provided with row's condensate water device 12.The effect of the downward extension portion 14
It is to carry out blowdown, row's condensed water by arranging condensate water device 12 in the bottom of pipeline.
Shown electric butterfly valve b11 is the valve for possessing remote auto control regulation, by opening and closing electric butterfly valve
B11 changes into the exhaust gas flow in exhaust gas recovery conduit 13.When electric butterfly valve b11 is closed, more flue gases are entered into
In exhaust gas recovery conduit 13, rich in CO2Flue gas, be sent in the burner hearth of coal-burning boiler 1, due to no O2Supplement, burn journey
Degree has and declines to a great extent, and is now " control oxygen pattern ".So as to reach second utilization and the purpose of heat recovery of waste gas.
In an embodiment of the present utility model, the electric butterfly valve b11 be arranged at the waste gas discharge chimney 10 away from top
The position that four meters of portion's floss hole, distance of the waste gas recovery of the waste gas discharge chimney 10 mouthful away from top discharge mouthful is five meters, institute
State a diameter of 1200mm of exhaust gas recovery conduit 13.
In the front end of flue gas exhaust blower (centrifugal blower b9), one filter area of design and installation is 500 squares of cloth bag
Deduster, it is therefore an objective to reduce the dust emissions amount of chimney, flue gas when making to enter into blower fan is ensured of that purification is later, meet ring
Protect discharge index.
In sum, the utility model reduces fume emission, indirectly reduces CO2Total emission volumn, " control oxygen pattern "
After unlatching, smoke discharge amount reduction by 50% is that area surroundings protection is made that certain contribution.The utility model does not have banking mistake
Journey and the state of " strong wind big fire ", improve the burning degree of burning of the coal in stove, reduce the consumption of coal.Extensive
During multiple boiler temperature, terminate " control oxygen pattern ", only the electric butterfly valve b11 on waste gas discharge chimney 10 need to be opened 50%, it is combustion-supporting
Air blower improves 5Hz, and the coal in boiler can reach fully burning in five minutes, recovers the state before " control oxygen pattern ",
Boiler intergrated efficiency is set to improve more than 10%.
Implementation method of the present utility model is the foregoing is only, protection domain of the present utility model is not intended to limit.It is all
Any modification, equivalent substitution and improvements, extension made within spirit of the present utility model and principle etc., is all contained in this reality
With in new protection domain.
Claims (10)
1. a kind of fire coal boiler fume secondary recovery control oxygen flame retardant systems, it is characterised in that including coal-burning boiler (1), warm-air pipe
Road (2), coal briquette dryer (5), discharge duct (6), waste gas discharge chimney (10) and exhaust gas recovery conduit (13), wherein coal-fired pot
The waste discharge gas port of stove (1) is connected by hot air duct (2) with the air inlet of coal briquette dryer (5), the coal briquette dryer (5)
Exhaust outlet is connected by discharge duct (6) with the bottom inlet of waste gas discharge chimney (10), on the waste gas discharge chimney (10)
Electric butterfly valve b (11) is provided with, the side wall of the waste gas discharge chimney (10) is provided with the waste gas below electric butterfly valve b (11)
Recovery port, the waste gas recovery mouthful is connected by exhaust gas recovery conduit (13) with the burner hearth of the coal-burning boiler (1).
2. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 1, it is characterised in that the hot blast
Heat-insulation layer is provided with the outside of pipeline (2), the discharge duct (6) is provided with deduster (7), the waste gas discharge chimney (10)
Electric butterfly valve a (8) and centrifugal blower b (9) is provided with bottom inlet.
3. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 1, it is characterised in that the waste gas
Recovery channel (13) is with downward extension portion (14).
4. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 3, it is characterised in that the waste gas
The upper end of the downward extension portion (14) of recovery channel (13) connects with the waste gas recovery mouthful of the waste gas discharge chimney (10), to
The bottom of lower extension point (14) is provided with row's condensate water device (12).
5. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 1, it is characterised in that described electronic
Butterfly valve b (11) is arranged at the position away from top discharge mouthfuls four meters of the waste gas discharge chimney (10).
6. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 5, it is characterised in that the waste gas
Distance of the waste gas recovery of blowdown stack (10) mouthful away from top discharge mouthful is five meters, the exhaust gas recovery conduit (13) it is a diameter of
1200mm。
7. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 1, it is characterised in that the hot blast
On pipeline (2) Hand-operated butterfly valve (3) and centrifugal blower a (4) are provided with coal briquette dryer (5) air inlet.
8. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 1, it is characterised in that the coal briquette
The bottom of dryer (5) is provided with multiple dryer air inlets (56), and multiple dryers are provided with the top of the coal briquette dryer (5)
Exhaust outlet (54).
9. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 8, it is characterised in that the coal briquette
The bottom of dryer (5) is provided with the main air intake passage (51) connected with multiple dryer air inlets (56), and top is provided with and multiple
The main air exhaust passage (55) of dryer exhaust outlet (54) connection, the main air intake passage (51) connects with hot air duct (2), described
Main air exhaust passage (55) connects with discharge duct (6).
10. fire coal boiler fume secondary recovery control oxygen flame retardant systems according to claim 9, it is characterised in that the coal
The multiple branch air channels (52) for being connected with multiple dryer air inlets (56) respectively, each branch air channel are provided with ball dryer (5)
(52) multiple hot blast discharge pipes (53) are connected with along its length, multiple air-out is distributed with each hot blast discharge pipe (53)
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334101.3U CN206291225U (en) | 2016-12-06 | 2016-12-06 | Fire coal boiler fume secondary recovery control oxygen flame retardant systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334101.3U CN206291225U (en) | 2016-12-06 | 2016-12-06 | Fire coal boiler fume secondary recovery control oxygen flame retardant systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206291225U true CN206291225U (en) | 2017-06-30 |
Family
ID=59096337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621334101.3U Active CN206291225U (en) | 2016-12-06 | 2016-12-06 | Fire coal boiler fume secondary recovery control oxygen flame retardant systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206291225U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642180A (en) * | 2016-12-06 | 2017-05-10 | 丹东同合高新科技有限公司 | Oxygen control and flame retardant system for secondary recycling coal boiler flue gas |
| CN107246619A (en) * | 2017-07-18 | 2017-10-13 | 广西科穗环境科技有限公司 | The dust pelletizing system of biomass boiler |
-
2016
- 2016-12-06 CN CN201621334101.3U patent/CN206291225U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642180A (en) * | 2016-12-06 | 2017-05-10 | 丹东同合高新科技有限公司 | Oxygen control and flame retardant system for secondary recycling coal boiler flue gas |
| CN106642180B (en) * | 2016-12-06 | 2019-01-04 | 丹东同合高新科技有限公司 | A kind of fire coal boiler fume secondary recovery control oxygen flame retardant systems |
| CN107246619A (en) * | 2017-07-18 | 2017-10-13 | 广西科穗环境科技有限公司 | The dust pelletizing system of biomass boiler |
| CN107246619B (en) * | 2017-07-18 | 2019-07-09 | 广西科穗环境科技有限公司 | The dust pelletizing system of biomass boiler |
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