CN205155926U - Novel coal fired boiler residual heat from flue gas system - Google Patents
Novel coal fired boiler residual heat from flue gas system Download PDFInfo
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- CN205155926U CN205155926U CN201520918379.4U CN201520918379U CN205155926U CN 205155926 U CN205155926 U CN 205155926U CN 201520918379 U CN201520918379 U CN 201520918379U CN 205155926 U CN205155926 U CN 205155926U
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Abstract
The utility model provides a novel coal fired boiler residual heat from flue gas system comprises the condensate water part of mutual intercommunication and flue gas heating fan heater part, condensate water part is by low pressure feed water heater group and constitute rather than the cold ware of one -level cigarette of input and output intercommunication respectively, flue gas heating fan heater part comprises the cold ware of air heater, dust remover, draught fan, one -level cigarette, the cold ware of second grade cigarette and the fan heater that communicates in proper order. The utility model discloses both can heat cold wind, again can heat -setting water, through the usable flue gas waste heat of retrieving of the cold ware of one -level cigarette with heat -setting water, through the usable flue gas waste heat heating cold wind of retrieving of the cold ware of second grade cigarette.
Description
Technical field
The utility model relates to a kind of recovery system, especially a kind of Novel coal-fired boiler flue gas waste heat recovery system.
Background technology
At present, domestic coal-burning power plant Mist heat recovering mostly is direct heat-setting water, is returned to water system by the condensate water heated.This Technical Economy is poor, and coal consumption reduces about 1-1.5g/kw.h, limited to the coal conservation contribution of power plant.
Summary of the invention
For the weak point existed in the problems referred to above, the utility model provides one both can heat cold wind, again can the Novel coal-fired boiler flue gas waste heat recovery system of heat-setting water.
For achieving the above object, the utility model provides a kind of Novel coal-fired boiler flue gas waste heat recovery system, be made up of the condensate water part be interconnected and flue gas steam air heater part, described condensate water part is made up of low-pressure heater group and the one-level cigarette cooler (2) that is communicated with output with its input respectively;
Described flue gas steam air heater part is made up of the air preheater be communicated with successively (9), deduster (4), air-introduced machine (3), one-level cigarette cooler (2), secondary cigarette cooler (1) and steam air heater.
Above-mentioned Novel coal-fired boiler flue gas waste heat recovery system, wherein, described low-pressure heater group is made up of the low-pressure heater a (8) be communicated with successively, low-pressure heater group b (7) and low-pressure heater group c (6), input and the output of described low-pressure heater group b (7) of described low-pressure heater a (8) are all be connected with the input of described one-level cigarette cooler (2), and the output of described one-level cigarette cooler (2) is connected with the output of described low-pressure heater group c (6).
Above-mentioned Novel coal-fired boiler flue gas waste heat recovery system, wherein, described steam air heater is divided into steam air heater a (10) and steam air heater b (5), and described steam air heater a (10) is connected with described secondary cigarette cooler (1) with cold air duct respectively by hot air duct with described steam air heater b (5).
Compared with prior art, the utility model has the following advantages:
1, the utility model both can heat cold wind, again can heat-setting water, the fume afterheat be recovered to can be utilized with heat-setting water by one-level cigarette cooler, can be utilized the fume afterheat heating cold wind be recovered to by secondary cigarette cooler;
2, in the flue gas after dedusting, solid particle is few, reduces the erosive wear of flue gas bleeder heater, can service life of extension device;
3, flue gas is generally about about 5 DEG C by air-introduced machine temperature rise, if after flue gas low-temperature economizer is arranged in air-introduced machine, before desulfurizer, can make full use of air-introduced machine temperature rise, and largeizationr improves fume afterheat profit;
4, arrange because it exports immediately desulfurizing tower entrance, and desulfurizing tower is inner and gateway flue all takes anti-corrosion measure, like this, fume afterheat utilizes heat exchanger outlet temperature can be reduced to the inlet temperature of desulfurizing tower permission, utilizes waste heat to increase, not only reclaims the successful of heat, decrease desulfurizing tower smoke evaporative water consumption, desulfurizing tower inlet temperature is low, and water consumption is few, protects again the corrosion-proof lining of tower;
5, make deduster, air-introduced machine and relevant flue higher than flue gas dew point temperature, be not corroded;
6, utilize the heat heating absorbed to improve the air wind-warm syndrome of air preheater import, systematic comparison is flexible.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Main Reference Numerals is described as follows:
1-secondary cigarette cooler; 2-one-level cigarette cooler; 3-air-introduced machine; 4-deduster; 5-steam air heater a; 6-low-pressure heater c; 7-low-pressure heater b; 8-low-pressure heater a; 9-air preheater; 10-steam air heater a
Detailed description of the invention
As shown in Figure 1, the utility model is made up of the condensate water part be interconnected and flue gas steam air heater part, and condensate water part is made up of low-pressure heater group and the one-level cigarette cooler 2 that is communicated with output with its input respectively.
In the present embodiment, low-pressure heater group is made up of the low-pressure heater a8 be communicated with successively by condensate line, low-pressure heater group b7 and low-pressure heater group c6, the input of low-pressure heater a8 and the output of low-pressure heater group b7 are all be connected by the input of condensate line with one-level cigarette cooler 2, the output of one-level cigarette cooler 2 is connected by the output of condensate line with low-pressure heater group c6, therefore, condensate circuit is formed.
Flue gas steam air heater part is made up of the air preheater 9 be communicated with successively, deduster 4, air-introduced machine 3, one-level cigarette cooler 2, secondary cigarette cooler 1 and steam air heater.
Wherein, air preheater 9 is connected with deduster 4, air-introduced machine 3, one-level cigarette cooler 2, secondary cigarette cooler 1 successively by exhaust gases passes.
In the present embodiment, steam air heater is divided into steam air heater a10 and steam air heater b5, and steam air heater a10 is connected with secondary cigarette cooler 1 with cold air duct respectively by hot air duct with steam air heater b5.
Before the input of low-pressure heater a with after the output of low-pressure heater b, condensate water is mixed to input one-level cigarette cooler by flue gas, turned back to the output of low-pressure heater c by the condensate water after heating.After one-level cigarette cooler Mist heat recovering, then through secondary cigarette cooler by further recovery waste heat, the waste heat of recovery is used for heating steam air heater cold wind.By two-stage waste heat recovery heat-setting water and cold wind, the economy of system can be provided, reduce coal consumption also more obvious.
The utility model combines low-temperature heater and steam air heater, and system is when operating mode is run in the winter time, and the flue gas that coal-burning boiler produces, after air preheater, cleaner, then enters low-temperature heater.Flue-gas temperature drops to about 90 DEG C, and the waste heat of flue gas is all used for heating cold wind; System is when summer condition, and the waste heat of flue gas is all used for heat-setting water, is returned to water system by the condensate water heated; When non-above-mentioned operating mode, fume afterheat heats cold wind and condensate water simultaneously.
The foregoing is only preferred embodiment of the present utility model, is only illustrative for invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes in the spirit and scope that invention claim limits to it, amendment, even equivalence, but all will fall in protection domain of the present utility model.
Claims (3)
1. a Novel coal-fired boiler flue gas waste heat recovery system, it is characterized in that, be made up of the condensate water part be interconnected and flue gas steam air heater part, described condensate water part is made up of low-pressure heater group and the one-level cigarette cooler (2) that is communicated with output with its input respectively;
Described flue gas steam air heater part is made up of the air preheater be communicated with successively (9), deduster (4), air-introduced machine (3), one-level cigarette cooler (2), secondary cigarette cooler (1) and steam air heater.
2. Novel coal-fired boiler flue gas waste heat recovery system according to claim 1, it is characterized in that, described low-pressure heater group is made up of the low-pressure heater a (8) be communicated with successively, low-pressure heater group b (7) and low-pressure heater group c (6), input and the output of described low-pressure heater group b (7) of described low-pressure heater a (8) are all be connected with the input of described one-level cigarette cooler (2), and the output of described one-level cigarette cooler (2) is connected with the output of described low-pressure heater group c (6).
3. Novel coal-fired boiler flue gas waste heat recovery system according to claim 1, it is characterized in that, described steam air heater is divided into steam air heater a (10) and steam air heater b (5), and described steam air heater a (10) is connected with described secondary cigarette cooler (1) with cold air duct respectively by hot air duct with described steam air heater b (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918379.4U CN205155926U (en) | 2015-11-17 | 2015-11-17 | Novel coal fired boiler residual heat from flue gas system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918379.4U CN205155926U (en) | 2015-11-17 | 2015-11-17 | Novel coal fired boiler residual heat from flue gas system |
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| CN205155926U true CN205155926U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520918379.4U Active CN205155926U (en) | 2015-11-17 | 2015-11-17 | Novel coal fired boiler residual heat from flue gas system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131997A (en) * | 2019-06-13 | 2019-08-16 | 山东博特瑞节能环保科技有限公司 | Coal slime dries the exhaust heat stepped recycling system of lack of gas |
-
2015
- 2015-11-17 CN CN201520918379.4U patent/CN205155926U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131997A (en) * | 2019-06-13 | 2019-08-16 | 山东博特瑞节能环保科技有限公司 | Coal slime dries the exhaust heat stepped recycling system of lack of gas |
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| GR01 | Patent grant |