CN204830910U - Take sintering and pelletizing waste heat power generation system of after burning - Google Patents
Take sintering and pelletizing waste heat power generation system of after burning Download PDFInfo
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- CN204830910U CN204830910U CN201520479150.5U CN201520479150U CN204830910U CN 204830910 U CN204830910 U CN 204830910U CN 201520479150 U CN201520479150 U CN 201520479150U CN 204830910 U CN204830910 U CN 204830910U
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- pelletizing
- flue
- sintering
- waste heat
- steam
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model discloses a take sintering and pelletizing waste heat power generation system of after burning, it includes sinter cooler (1), after burning device (9), exhaust -heat boiler (14), steam pocket (17), steam turbine (18) and generator (19), sinter cooler (1) upper portion is equipped with low temperature exhaust outlet (3) and medium temperature exhaust outlet (4), and the hot -blast flue of inward -remittance (13) links to each other with low temperature flue (5) and medium temperature flue (6) respectively, after burning device (9) lower part is equipped with combustor (10), and after burning device (9) export links to each other with hot -blast flue (13), and exhaust -heat boiler (14) steam outlet links to each other with steam pocket (17), and steam pocket (17) link to each other with steam turbine (18), and steam turbine (18) link to each other with generator (19). The utility model discloses can realize the surplus pick up the heat of sintering waste heat and pelletizing, can improve flue -gas temperature and steam purity simultaneously, stabilize steam turbine power generation efficiency, the energy saving.
Description
Technical field
The utility model relates to a kind of afterheat generating system, and a kind of metallurgy industry that is used for sinters and pelletizing process afterheat generating system specifically.
Background technology
In the residual heat resources of China's steel industry, in sintering process, available waste heat accounts for that steel plant always consume 12%, wherein sintered discharge gas waste heat accounts for 4%.Cooling machine waste gas sensible heat accounts for 28% of the whole heat expenditure of sintering process, and temperature is at 100-400 DEG C.Due to the restriction of sintering process, the recovery of sintering waste heat has that exhaust temperature fluctuations is large and low temperature part proportion is large, and thermal source continuity is difficult to ensure, has a strong impact on systems generate electricity amount and heat power equipment life-span.In addition, in pelletizing operation, fume afterheat Yin Wendu is low, utilization is difficult and do not cause relevant attention in China.Being in today of energy scarcity, exploitation advanced technology utilizes sintering and pelletizing waste heat to generate electricity effectively can advance iron and steel enterprise's energy efficiency, reduce costs, is that iron and steel produces energy-conservation important channel and development trend.
Utility model content
Utility model object: the purpose of this utility model overcomes the deficiencies in the prior art, a kind of reasonable in design is provided, easy to operate, it is convenient to safeguard, the sintering of the band afterburning that cost is low and pelletizing afterheat generating system, this system can not only realize sintering and recycle with pelletizing waste heat recovery, can also effectively improve flue-gas temperature and steam quality, stablize steam turbine power generation efficiency, economize energy.
Technical scheme: in order to realize above object, the utility model adopts following technical scheme:
Sintering with afterburning and a pelletizing afterheat generating system, it comprises sinter cooler, combustion-compensating device, waste heat boiler, drum, steam turbine and generator;
Described sinter cooler top is provided with low temperature waste gas outlet and middle temperature waste gas outlet, and low temperature waste gas outlet is connected with middle temperature flue with low temperature flue respectively with middle temperature waste gas outlet, and low temperature flue is connected with hot air flue after merging with middle temperature flue;
Described combustion-compensating device bottom is provided with burner, burner is connected with gas inlet, combustion-compensating device upper outlet is connected with hot air flue, the gas approach of waste heat boiler is connected with circulating fan with hot air flue respectively with exhanst gas outlet, the steam (vapor) outlet on waste heat boiler top is connected with drum, drum is connected with steam turbine, and steam turbine is connected with generator.
Preferably, the sintering of above-described band afterburning and pelletizing afterheat generating system, described middle temperature flue is connected with pelletizing exhaust gas inlet.In pelletizing waste gas warp, warm flue mixes with combustion-compensating device hot blast out and is heated.
Preferably, the sintering of above-described band afterburning and pelletizing afterheat generating system, described low temperature flue is drawn an air bypass and is connected with burner, and air bypass is connected with combustion air fan, take low temperature waste gas as combustion air, improve combustion-compensating device efficiency of combustion.
Preferably, the sintering of above-described band afterburning and pelletizing afterheat generating system, be provided with heat storage in described combustion-compensating device burner hearth, and anti-anti-avulsion fire in coal gas fluctuation situation, inboard wall of burner hearth lays heat-insulating material, improves the thermal efficiency.
Preferably, the sintering of above-described band afterburning and pelletizing afterheat generating system, described burner side is provided with gas inlet, plant area's by-product gas (as blast furnace gas, coke-stove gas etc.) is as afterburning fuel, opposite side is connected with combustion air fan import with air bypass, and combustion air fan is supplement ambient air as required.
Preferably, the sintering of above-described band afterburning and pelletizing afterheat generating system, described exhaust-heat boiler flue gas outlet is connected with sinter cooler bottom bellows by circulating fan, bellows are connected with main air blower, material bed flue gas after heat exchange being sent to sinter cooler recycles, simultaneously main air blower supplement ambient air as required.
The sintering of the above-described band afterburning that the utility model provides and pelletizing afterheat generating system, practical operation principle is:
Plant area's by-product gas enters burner by gas inlet, a part for low-temperature sintering waste gas enters in afterburning burner as combustion air through air bypass simultaneously, both produce the higher afterburning flue gas of temperature in combustion-compensating device combustion, pelletizing waste gas and sintered discharge gas mix with afterburning flue gas and enter residual heat boiler for exchanging heat after being heated and produce steam through drum in hot air flue, red switch steam turbine, drive electrical generators generates electricity, and the flue gas after residual heat boiler for exchanging heat draws back sinter cooler again for cooling mineral aggregate by circulating fan.Can not only realize sintering the recycling with pelletizing waste heat, can also effectively improve flue-gas temperature and steam quality, stablize steam turbine power generation efficiency, economize energy.
Beneficial effect: compared to the prior art sintering and the pelletizing afterheat generating system of the band afterburning that the utility model provides exist following advantage:
(1) sintering of band afterburning that provides of the utility model and pelletizing afterheat generating system, reasonable in design, easy to operate, afterburning is carried out by recycling the cooled flue gas of plant area's by-product gas to sintering and pelletizing process, stability and high efficiency generating can be realized, effective reduction iron and steel energy consumption, energy-saving and emission-reduction, can realize comprehensive utilization of resources.
(2) sintering of band afterburning that provides of the utility model and pelletizing afterheat generating system, be provided with heat storage in combustion-compensating device, burner hearth is equipped with heat-insulating material, can form adiabatic furnace, greatly improves the device thermal efficiency.
Accompanying drawing explanation
The sintering of the band afterburning that Fig. 1 provides for the utility model and the structural representation of pelletizing afterheat generating system.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen within the application's claims limited range.
As shown in Figure 1, a kind of sintering with afterburning and pelletizing afterheat generating system, it comprises sinter cooler 1, combustion-compensating device 9, waste heat boiler 14, drum 17, steam turbine 18 and generator 19;
Described sinter cooler 1 top is provided with low temperature waste gas outlet 3 and middle temperature waste gas outlet 4, and low temperature waste gas outlet 3 is connected with middle temperature flue 6 with low temperature flue 5 respectively with middle temperature waste gas outlet 4, and low temperature flue 5 is connected with hot air flue 13 after merging with middle temperature flue 6;
Described combustion-compensating device 9 bottom is provided with burner 10, burner 10 is connected with gas inlet 11, combustion-compensating device 9 upper outlet is connected with hot air flue 13, the gas approach of waste heat boiler 14 is connected with circulating fan 15 with hot air flue 13 respectively with exhanst gas outlet, the steam (vapor) outlet on waste heat boiler 14 top is connected with drum 17, drum 17 is connected with steam turbine 18, and steam turbine 18 is connected with generator 19.
The sintering of above-described band afterburning and pelletizing afterheat generating system, described middle temperature flue 6 is connected with pelletizing exhaust gas inlet 2.
The sintering of above-described band afterburning and pelletizing afterheat generating system, described low temperature flue 5 is drawn an air bypass 7 and is connected with burner 10, and air bypass 7 is connected with combustion air fan 8.
The sintering of above-described band afterburning and pelletizing afterheat generating system, be provided with heat storage 12 in described combustion-compensating device 9 burner hearth, inboard wall of burner hearth is equipped with heat-insulating material.
The sintering of above-described band afterburning and pelletizing afterheat generating system, described waste heat boiler 14 exhanst gas outlet is connected with sinter cooler 1 bottom bellows 20 by circulating fan 15, and bellows 20 are connected with main air blower 16.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a sintering with afterburning and pelletizing afterheat generating system, it is characterized in that, it comprises sinter cooler (1), combustion-compensating device (9), waste heat boiler (14), drum (17), steam turbine (18) and generator (19);
Described sinter cooler (1) top is provided with low temperature waste gas outlet (3) and middle temperature waste gas outlet (4), low temperature waste gas outlet (3) is connected with middle temperature flue (6) with low temperature flue (5) respectively with middle temperature waste gas outlet (4), and low temperature flue (5) is connected with hot air flue (13) after merging with middle temperature flue (6);
Described combustion-compensating device (9) bottom is provided with burner (10), burner (10) is connected with gas inlet (11), combustion-compensating device (9) upper outlet is connected with hot air flue (13), the gas approach of waste heat boiler (14) is connected with circulating fan (15) with hot air flue (13) respectively with exhanst gas outlet, the steam (vapor) outlet on waste heat boiler (14) top is connected with drum (17), drum (17) is connected with steam turbine (18), and steam turbine (18) is connected with generator (19).
2. the sintering of band afterburning according to claim 1 and pelletizing afterheat generating system, it is characterized in that, described middle temperature flue (6) is connected with pelletizing exhaust gas inlet (2).
3. the sintering of band afterburning according to claim 1 and pelletizing afterheat generating system, it is characterized in that, described low temperature flue (5) is drawn an air bypass (7) and is connected with burner (10), and air bypass (7) is connected with combustion air fan (8).
4. the sintering of the band afterburning according to any one of claims 1 to 3 and pelletizing afterheat generating system, is characterized in that, be provided with heat storage (12) in described combustion-compensating device (9) burner hearth, inboard wall of burner hearth is equipped with heat-insulating material.
5. the sintering of band afterburning according to claim 4 and pelletizing afterheat generating system, it is characterized in that, described waste heat boiler (14) exhanst gas outlet is connected with sinter cooler (1) bottom bellows (20) by circulating fan (15), and bellows (20) are connected with main air blower (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479150.5U CN204830910U (en) | 2015-07-06 | 2015-07-06 | Take sintering and pelletizing waste heat power generation system of after burning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479150.5U CN204830910U (en) | 2015-07-06 | 2015-07-06 | Take sintering and pelletizing waste heat power generation system of after burning |
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| CN204830910U true CN204830910U (en) | 2015-12-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910450A (en) * | 2016-06-30 | 2016-08-31 | 中冶华天工程技术有限公司 | Exhaust heat recycling system of sintering circular cooling machine |
| CN105973017A (en) * | 2016-06-30 | 2016-09-28 | 中冶华天工程技术有限公司 | Ring cooling machine exhaust gas waste heat comprehensive utilization system |
| CN106091710A (en) * | 2016-06-30 | 2016-11-09 | 中冶华天工程技术有限公司 | Sintering circular-cooler waste gas residual heat comprehensive reutilization system |
-
2015
- 2015-07-06 CN CN201520479150.5U patent/CN204830910U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910450A (en) * | 2016-06-30 | 2016-08-31 | 中冶华天工程技术有限公司 | Exhaust heat recycling system of sintering circular cooling machine |
| CN105973017A (en) * | 2016-06-30 | 2016-09-28 | 中冶华天工程技术有限公司 | Ring cooling machine exhaust gas waste heat comprehensive utilization system |
| CN106091710A (en) * | 2016-06-30 | 2016-11-09 | 中冶华天工程技术有限公司 | Sintering circular-cooler waste gas residual heat comprehensive reutilization system |
| CN106091710B (en) * | 2016-06-30 | 2018-07-10 | 中冶华天工程技术有限公司 | Sintering circular-cooler waste gas residual heat comprehensive reutilization system |
| CN105973017B (en) * | 2016-06-30 | 2018-07-31 | 中冶华天工程技术有限公司 | Ring cold machine waste gas residual heat utilization system |
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