CN101482374A - Power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler - Google Patents
Power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler Download PDFInfo
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- CN101482374A CN101482374A CNA200910024419XA CN200910024419A CN101482374A CN 101482374 A CN101482374 A CN 101482374A CN A200910024419X A CNA200910024419X A CN A200910024419XA CN 200910024419 A CN200910024419 A CN 200910024419A CN 101482374 A CN101482374 A CN 101482374A
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Abstract
The invention discloses a sinter cooling machine low-temperature tail gas waste heat power generating smoke device, comprises a sinter cooling machine, a power generation exhaust-heat boiler, a boiler draft fan, a re-circulating blower and a chimney; the sinter cooling machine comprises at least one high temperature smoke outlet and at least one low temperature smoke outlet; the power generation exhaust-heat boiler comprises a high temperature smoke inlet, a low temperature smoke inlet, a waste heat recovery device and a waste gas outlet; the high temperature smoke outlet of the sinter cooling machine is connected with the high temperature smoke inlet of the power generation exhaust-heat boiler; the low temperature smoke outlet of the sinter cooling machine is connected with the low temperature smoke inlet of the power generation exhaust-heat boiler; the waste gas outlet of the power generation exhaust-heat boiler is connected with the air inlet of the boiler draft fan; the first air outlet of the boiler draft fan is connected with the air inlet of the re-circulating blower; the air outlet of the re-circulating blower is connected with the air inlet of the sinter cooling machine; and the second air outlet of the boiler draft fan is connected with the chimney. The device can achieves a more uniform and more stable mine temperature and a better mineral aggregate quality, and can ensure the continuous safe operation of the waste heat power generation.
Description
One, technical field
The invention belongs to steel industry sintering waste heat generating technical field, particularly a kind of sinter cooler low temperature exhaust waste heat generation device.
Two, background technology
" state key industry clearer production technology guiding catalogue " state's economy and trade resource [2000] No. 137 (first) and State Economic and Trade Commission unite bulletin [2003] No. 21 (second batches) with State Environmental Protection Administration and have issued 28 clearer production technologies directly related with steel industry.From coking, ironmaking, steel-making, steel rolling production technology, choose and best embody integrated iron and steel works' cleaner production achievement, reflect that steel industry is energy-conservation, subtract dirt, the most representative index, sintering waste heat reclaims and just is decided to be wherein one; " the state key power-saving technology is promoted catalogue " (first) Sub_clause 11 " steel industry sintering waste heat generating technology " that in May, 2008, the National Development and Reform Commission announced is promoted the sintering waste heat generating technology.Sintering circuit is that iron and steel enterprise produces the power consumption major part in the circulation, its energy consumption is only second to the ironmaking operation, account for 10% of steel industry total energy consumption, and nearly 50% energy consumption is arranged in the sintering circuit total energy consumption all is that sensible heat form with sintering device flue gas and cooling machine waste gas enters atmosphere, has not only wasted heat energy but also contaminated environment.Because the sintered discharge gas temperature is not high, iron and steel enterprise paid attention to inadequately the recycling of this part heat energy in the past, but in fact because the amount of sintered discharge gas is very big, thereby can be also considerable for the heat that reclaims.
The sintering waste heat generating device ubiquity device for generating power by waste heat fluctuation of service of present domestic design, low when high during generated energy, the shutdown that unit did not stop when situation was bad has influenced the safe operation of TRT; Or electricity generation system can more normally move but the quality of sintering deposit is a greater impact as sintering deposit temperature drift 1,, and conveyer belt often burns band, causes disastershutdown; 2, sintering deposit returning charge increase causes sintering machine output to descend.The heat-obtaining mode of tracing it to its cause with its cooler has great relation.
Three, summary of the invention
Technical problem:
Technical problem to be solved by this invention is the defective at prior art, and provides a kind of sinter cooler ore deposit temperature even, the device for generating power by waste heat security of operation, steadily, a kind of power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler efficiently.
Technical scheme:
Technical solution of the present invention is: a kind of power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler, comprise sinter cooler, generating waste heat boiler, blower fan and chimney, described sinter cooler comprises at least one high-temperature flue gas outlet and the outlet of at least one low-temperature flue gas, described generating waste heat boiler comprises the high-temperature flue gas import, the low-temperature flue gas import, waste-heat recovery device and waste gas outlet, described blower fan comprises boiler induced-draft fan and circulating fan, the high-temperature flue gas outlet of described sinter cooler is connected with the high-temperature flue gas import of generating waste heat boiler, the low-temperature flue gas outlet of described sinter cooler is connected with the low-temperature flue gas outlet of generating waste heat boiler, the waste gas outlet of described generating waste heat boiler is connected with the air intake vent of described boiler induced-draft fan, first air outlet of described boiler induced-draft fan is connected with the air inlet of circulating fan, the air outlet of circulating fan is connected to the air inlet of described sinter cooler, and second air outlet of described boiler induced-draft fan is connected with chimney.
The exhaust gas volumn of first air outlet of described boiler induced-draft fan accounts for 60～70% of whole air-introduced machine exhaust gas volumn.
Be provided with at least one dividing plate in the wind storehouse of described sinter cooler, described wind storehouse is divided at least two zones by described at least one dividing plate, is provided with air inlet in described each zone.
Beneficial effect:
Sinter cooler of the present invention is provided with at least one high-temperature flue gas outlet and the outlet of at least one low-temperature flue gas, takes the multiple spot heat-obtaining; The wind storehouse of cooler is divided into a plurality of zones by dividing plate, and ventilates respectively, simultaneously the useless flue gas part air quantity of generating waste heat boiler is passed into a plurality of zones in cooler wind storehouse by circulating fan.Compared with prior art, produced following beneficial effect:
1, adopt part steam generator system smoke discharging to stablize cooler high temperature section exhaust gas temperature as the cooling air of cooler; The circulating fan of boiler replaces the blower fan of cooler, and for guaranteeing sinter quality, penetration speed is in effective range in sintering deposit to guarantee cooling medium, and internal circulating load should be controlled at about 60～70% of whole exhaust gas volumn.
2, change the position of existing airtight section chimney of sinter cooler, implement the multiple spot heat-obtaining, make between high low-temperature flue gas and do not mix.
3, adopt after the multiple spot heat-obtaining, the flue gas that temperature is close mixes, and the flue gas that forms two bursts of different temperatures enters waste-heat recovery device simultaneously, and waste-heat recovery device is provided with different heating devices according to the difference of flue-gas temperature, energy obtains cascade utilization, improves the heat energy utilization rate.
4, adopt after the above measure, the quality of whole sintering deposit is guaranteed, final mineral aggregate temperature does not raise 5 ℃ than carrying out before the waste heat recovery, simultaneously, the subregion ventilates, ore deposit temperature in the zone is more uniform and stable, and the mineral aggregate quality gets a promotion, and can guarantee the continuous safe operation of device for generating power by waste heat.
Four, description of drawings
Fig. 1 is a sinter cooler low temperature exhaust waste heat generation flue gas structure chart of the present invention.
Among the figure: the 1-sinter cooler; The 2-generating waste heat boiler; The 3-boiler induced-draft fan; The 4-circulating fan; The 5-chimney
Fig. 2 is sinter cooler multiple spot heat-obtaining and separate ventilation structure chart.
Among the figure: 11-opens wide canopy; 12-cools off chassis; The 13-magazine; 14-first dividing plate; The 15-ventilation duct; The 16-second partition; The airtight canopy of 17-; The 18-blowdown stack; 19-heat-obtaining mouth; The 10-ore bucket that falls; The 171-first area; The 172-second area; 111-the 3rd zone
Fig. 3 is that Fig. 2 hides bucket air inlet structure figure.
Fig. 4 is a twin flue waste-heat recovery device structure chart
Among the figure: the import of 21-high-temperature flue gas; The import of 22-low-temperature flue gas; The 23-waste-heat recovery device; The 24-exhanst gas outlet
Five, the specific embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated:
Power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler of the present invention, comprise sinter cooler 1, generating waste heat boiler 2, boiler induced-draft fan 3, circulating fan 4 and chimney 5, in Fig. 1: increase the air blast that circulating fan 4 replaces original first area 171, air circulation is generally whole exhaust gas volumn 60%～70%, and preferably 65%, the pressure head of circulating fan 4 is the resistance that the pressure head of original air blast adds existing circulation airduct.
Be provided with heat-obtaining mouth 19 in the airtight canopy of the 17-of sinter cooler 1 upper end, this heat-obtaining mouth comprises at least one high-temperature flue gas outlet and the outlet of at least one low-temperature flue gas, generating waste heat boiler 2 comprises high-temperature flue gas import 21, low-temperature flue gas import 22, waste-heat recovery device 23 and useless exhanst gas outlet 24, the high-temperature flue gas outlet of sinter cooler 1 is connected with the high-temperature flue gas import 21 of generating waste heat boiler 2, the low-temperature flue gas outlet of sinter cooler 1 is connected with the low-temperature flue gas outlet 22 of generating waste heat boiler 2, the useless exhanst gas outlet 24 of generating waste heat boiler 2 is connected with the air intake vent of boiler induced-draft fan 3, first air outlet of boiler induced-draft fan 3 is connected with the air inlet of circulating fan 4, the air outlet of circulating fan 4 is connected to the blast pipe 15 of the air inlet of described sinter cooler 1, and second air outlet of boiler induced-draft fan 3 is connected with chimney 5.
In Fig. 2,3: open a plurality of heat-obtaining mouths 19 on the top of sinter cooler 1 airtight canopy 17, implement the multiple spot heat-obtaining.On sinter cooler 1 airtight canopy 17 and ventilation duct 15, increase by first dividing plate 14 and second partition 16 respectively, airtight canopy 17 overlay areas are divided into two first areas 171 and second area 172, the zone of opening wide canopy 11 coverings is the 3rd zone 111, implements separate ventilation; It is fixed that the height of first dividing plate 14 will come according to thickness of feed layer, and the size of second partition 16 is fixed according to the size of ventilation duct 15.
In Fig. 4: the flue gas that becomes two bursts of different amount different temperatures by the flue gas of waste-heat recovery device 23 by optimum organization, high-temperature flue gas advances high temperature section gas approach 21, low-temperature flue gas advances 22, two strands of flue gases of low-temperature zone gas approach and mixes the back by exhanst gas outlet 24 discharges in waste-heat recovery device 23; According to the difference of flue-gas temperature, when two strands of flue gases pass through waste-heat recovery device 23, respectively by different heating surfaces.
Claims (3)
1, a kind of power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler, comprise sinter cooler, generating waste heat boiler, blower fan and chimney, it is characterized in that: described sinter cooler comprises at least one high-temperature flue gas outlet and the outlet of at least one low-temperature flue gas, described generating waste heat boiler comprises the high-temperature flue gas import, the low-temperature flue gas import, waste-heat recovery device and waste gas outlet, described blower fan comprises boiler induced-draft fan and circulating fan, the high-temperature flue gas outlet of described sinter cooler is connected with the high-temperature flue gas import of generating waste heat boiler, the low-temperature flue gas outlet of described sinter cooler is connected with the low-temperature flue gas outlet of generating waste heat boiler, the waste gas outlet of described generating waste heat boiler is connected with the air intake vent of described boiler induced-draft fan, first air outlet of described boiler induced-draft fan is connected with the air inlet of circulating fan, the air outlet of circulating fan is connected to the air inlet of described sinter cooler, and second air outlet of described boiler induced-draft fan is connected with chimney.
2, power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler according to claim 1 is characterized in that: the exhaust gas volumn of first air outlet of described boiler induced-draft fan accounts for 60～70% of whole air-introduced machine exhaust gas volumn.
3, power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler according to claim 1 and 2, it is characterized in that: in the wind storehouse of described sinter cooler, be provided with at least one dividing plate, described wind storehouse is divided at least two zones by described at least one dividing plate, is provided with air inlet in described each zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910024419XA CN101482374A (en) | 2009-02-20 | 2009-02-20 | Power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910024419XA CN101482374A (en) | 2009-02-20 | 2009-02-20 | Power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler |
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| CN101482374A true CN101482374A (en) | 2009-07-15 |
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| CNA200910024419XA Pending CN101482374A (en) | 2009-02-20 | 2009-02-20 | Power generation flue gas apparatus by using low-temperature vent gas waste heat of sintering cooler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943417A (en) * | 2010-09-26 | 2011-01-12 | 安徽金鼎锅炉股份有限公司 | Flue system of waste heat boiler |
| CN102174903A (en) * | 2011-01-18 | 2011-09-07 | 东南大学 | Bootstrap system using steam turbine to directly drive sintering cooling fan |
| CN103234364A (en) * | 2013-04-15 | 2013-08-07 | 中信重工机械股份有限公司 | Device with griddle and process for generating power by efficiently recycling sinter waste heat |
| CN112608049A (en) * | 2020-12-16 | 2021-04-06 | 天津水泥工业设计研究院有限公司 | Cyclic preheating low-energy-consumption carbon-enriched cement production system and method |
-
2009
- 2009-02-20 CN CNA200910024419XA patent/CN101482374A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943417A (en) * | 2010-09-26 | 2011-01-12 | 安徽金鼎锅炉股份有限公司 | Flue system of waste heat boiler |
| CN102174903A (en) * | 2011-01-18 | 2011-09-07 | 东南大学 | Bootstrap system using steam turbine to directly drive sintering cooling fan |
| CN103234364A (en) * | 2013-04-15 | 2013-08-07 | 中信重工机械股份有限公司 | Device with griddle and process for generating power by efficiently recycling sinter waste heat |
| CN112608049A (en) * | 2020-12-16 | 2021-04-06 | 天津水泥工业设计研究院有限公司 | Cyclic preheating low-energy-consumption carbon-enriched cement production system and method |
| CN112608049B (en) * | 2020-12-16 | 2022-08-23 | 天津水泥工业设计研究院有限公司 | Cyclic preheating low-energy-consumption carbon-enriched cement production system and method |
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Open date: 20090715 |