CN102393149B - Thermotechnical linkage power system utilizing waste heat of cement production system and using method thereof - Google Patents
Thermotechnical linkage power system utilizing waste heat of cement production system and using method thereof Download PDFInfo
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- CN102393149B CN102393149B CN2011103620996A CN201110362099A CN102393149B CN 102393149 B CN102393149 B CN 102393149B CN 2011103620996 A CN2011103620996 A CN 2011103620996A CN 201110362099 A CN201110362099 A CN 201110362099A CN 102393149 B CN102393149 B CN 102393149B
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Abstract
The invention discloses a thermotechnical linkage power system utilizing waste heat of a cement production system and a using method thereof. The power system comprises a first waste heat boiler (1), a second waste heat boiler (2), a first valve (3), a first steam turbine (4), a second steam turbine (5), a third steam turbine (6), a fourth steam turbine (7), a high-temperature fan (8), a circulating fan (9), an exhaust fan (10), a cement mill (11), a water pump (12), a CFB (circulating fluid bed) boiler (13), a fifth steam turbine (14) and a second valve (15). The thermotechnical linkage power system utilizing waste heat of the cement production system, provided by the invention, adopts the steam turbines for replacing motors to provide driving force for the high-temperature fan, the circulating fan, the exhaust fan and the cement mill, and the waste heat generated by the cement production system is directly utilized, thus the energy loss generated in energy transfer and energy conversion processes is effectively reduced when the waste heat is utilized. The power system can reduce the energy loss by at least 5% in energy transfer and energy conversion processes, thereby providing an effective way for realizing energy saving and emission reduction.
Description
Technical field
The present invention relates to power conversion utilization and the dynamical system field of cement production system, particularly link dynamical system and using method thereof of a kind of thermal technology who utilizes the cement production system waste heat.
Background technology
Along with country improves day by day to the requirement that reduces carbon emission and raising energy-saving efficiency, each manufacturing enterprise has mentioned energy-saving and emission-reduction important agenda.
The cement production system of prior art adopts motor to provide driving force for high-temperature blower, circulating fan, exhaust blower and cement mill, and the waste heat that cement production system produces all flows to steam turbine, and steam turbine is powered to the cement production system after utilizing cogeneration again.In waste heat conveying, steam turbine generating and power supply process, a large amount of energy losses is arranged all.
Summary of the invention
The purpose of this invention is to provide a kind of thermal technology who utilizes cement production system waste heat dynamical system that links.
Another object of the present invention provides the link using method of dynamical system of a kind of thermal technology who utilizes the cement production system waste heat.
The thermal technology who the utilizes the cement production system waste heat provided by the invention dynamical system that links comprises the first waste heat boiler, the second waste heat boiler, the first valve, the first steam turbine, the second steam turbine, the 3rd steam turbine, the 4th steam turbine, high-temperature blower, circulating fan, exhaust blower, cement mill, water pump, CFB boiler, the 5th steam turbine and the second valve.
Cement production system by pipeline respectively with described the first waste heat boiler be connected waste heat boiler and be connected, described the first waste heat boiler and the second waste heat boiler by pipeline through described the first valve respectively with described the first steam turbine, described the second steam turbine, described the 3rd steam turbine be connected the 4th steam turbine and connect, described CFB boiler is connected with described the 5th steam turbine by pipeline, described the 5th steam turbine through described the second valve respectively with described the first steam turbine, described the second steam turbine, described the 3rd steam turbine be connected the 4th steam turbine and connect, described the first steam turbine is connected with described high-temperature blower axle, described the second steam turbine is connected with described circulated air arbor, described the 3rd steam turbine is connected with described air draft arbor, described the 4th steam turbine is connected with described cement grinding mill arbor, described the first steam turbine, described the second steam turbine, described the 3rd steam turbine be connected the 4th steam turbine and be connected with described water pump by pipeline, described water pump is connected with described the first waste heat boiler by pipeline.
Preferably, described dynamical system further comprises generator.
Preferably, described the 5th steam turbine is connected with described generator shaft.
Preferably, the pressure of described high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.
Preferably, the pressure of described low temperature and low pressure steam is 1.5-1.7MPa, and its temperature is 300-340 ℃.
The link using method of dynamical system of the thermal technology who utilizes the cement production system waste heat provided by the invention comprises:
When described dynamical system is started shooting from cold conditions, close described the first valve and open described the second valve, described CFB boiler produces high temperature and high pressure steam and is transported to described the 5th steam turbine, described the 5th steam turbine utilizes the high temperature and high pressure steam acting to provide driving force for described generator, described generator water supply mud production system power supply, high temperature and high pressure steam changes low temperature and low pressure steam into after described the 5th steam turbine acting, described the 5th steam turbine is transported to respectively described the first steam turbine with low temperature and low pressure steam through described the second valve, described the second steam turbine, described the 3rd steam turbine and described the 4th steam turbine, described the first steam turbine utilizes the low temperature and low pressure steam acting to provide driving force for described high-temperature blower, described high-temperature blower is used for the waste gas discharge of cement production system and the supply of live gas, described the second steam turbine utilizes the low temperature and low pressure steam acting to provide driving force for described circulating fan, described circulating fan is used for the oven dry of cement production system powder stock, described the 3rd steam turbine utilizes the low temperature and low pressure steam acting to provide driving force for described exhaust blower, described exhaust blower is used for getting rid of the waste gas of cement production system, described the 4th steam turbine utilizes the low temperature and low pressure steam acting to provide driving force for described cement mill, described cement mill is used for clinker is ground into powder, low temperature and low pressure steam is respectively through described the first steam turbine, described the second steam turbine, condense into water after described the 3rd steam turbine and the acting of described the 4th steam turbine, described water pump will be from described the first steam turbine, described the second steam turbine, the condensed water of described the 3rd steam turbine and described the 4th steam turbine is transported to described the first waste heat boiler with recycling;
When cement production system normally moves, described the first waste heat boiler and the second waste heat boiler utilize the waste heat of cement production system to produce low temperature and low pressure steam, close described the second valve and open described the first valve this moment, low temperature and low pressure steam from described the first waste heat boiler and described the second waste heat boiler is transported to respectively described the first steam turbine through described the first valve, described the second steam turbine, described the 3rd steam turbine and described the 4th steam turbine, described the first steam turbine utilizes the low temperature and low pressure steam acting to provide driving force for described high-temperature blower, described high-temperature blower is used for the waste gas discharge of cement production system and the supply of live gas, described the second steam turbine utilizes the low temperature and low pressure steam acting to provide driving force for described circulating fan, described circulating fan is used for the oven dry of cement production system powder stock, described the 3rd steam turbine utilizes the low temperature and low pressure steam acting to provide driving force for described exhaust blower, described exhaust blower is used for getting rid of the waste gas of cement production system, described the 4th steam turbine utilizes the low temperature and low pressure steam acting to provide driving force for described cement mill, described cement mill is used for clinker is ground into powder, low temperature and low pressure steam is respectively through described the first steam turbine, described the second steam turbine, condense into water after described the 3rd steam turbine and the acting of described the 4th steam turbine, described water pump will be from described the first steam turbine, described the second steam turbine, the condensed water of described the 3rd steam turbine and described the 4th steam turbine is transported to described the first waste heat boiler with recycling.
Preferably, the pressure of described high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.
Preferably, the pressure of described low temperature and low pressure steam is 1.5-1.7MPa, and its temperature is 300-340 ℃.
The present invention has following beneficial effect:
The thermal technology who the utilizes the cement production system waste heat provided by the invention dynamical system that links provides driving force with the steam turbine instead of electr ic motor for high-temperature blower, circulating fan, exhaust blower and cement mill, the waste heat that has directly utilized cement production system to produce, the energy loss that has produced in Energy transfer and the conversion process of energy when effectively having reduced UTILIZATION OF VESIDUAL HEAT IN.Described dynamical system can be reduced by at least 5% energy loss in Energy transfer and conversion process of energy, for realizing that energy-saving and emission-reduction provide effective way.
Description of drawings
Fig. 1 is the link schematic diagram of dynamical system of the thermal technology who utilizes the cement production system waste heat of the embodiment of the invention.
The specific embodiment
Below in conjunction with drawings and Examples summary of the invention of the present invention is further described.
The thermal technology who the utilizes the cement production system waste heat provided by the invention dynamical system that links comprises the first waste heat boiler 1, the second waste heat boiler 2, the first valve 3, the first steam turbine 4, the second steam turbine 5, the 3rd steam turbine 6, the 4th steam turbine 7, high-temperature blower 8, circulating fan 9, exhaust blower 10, cement mill 11, water pump 12, CFB boiler 13, the 5th steam turbine 14, the second valve 15 and generator 16, as shown in Figure 1.
Cement production system by pipeline respectively with described the first waste heat boiler 1 be connected waste heat boiler 2 and be connected, described the first waste heat boiler 1 and the second waste heat boiler 2 by pipeline through described the first valve 3 respectively with described the first steam turbine 4, described the second steam turbine 5, described the 3rd steam turbine 6 be connected the 4th steam turbine 7 and connect, described CFB boiler 13 is connected with described the 5th steam turbine 14 by pipeline, described the 5th steam turbine 14 through described the second valve 15 respectively with described the first steam turbine 4, described the second steam turbine 5, described the 3rd steam turbine 6 be connected the 4th steam turbine 7 and connect, described the first steam turbine 4 is connected with described high-temperature blower 8 axles, described the second steam turbine 5 is connected with described circulating fan 9 axles, described the 3rd steam turbine 6 is connected with described exhaust blower 10 axles, described the 4th steam turbine 7 is connected with described cement mill 11 axles, described the first steam turbine 4, described the second steam turbine 5, described the 3rd steam turbine 6 be connected the 4th steam turbine 7 and be connected with described water pump 12 by pipeline, described water pump 12 is connected with described the first waste heat boiler 1 by pipeline, and described the 5th steam turbine 14 is connected with described generator 16 axles.
The link using method of dynamical system of the thermal technology who utilizes the cement production system waste heat provided by the invention comprises:
When described dynamical system is started shooting from cold conditions, close described the first valve 3 and open described the second valve 15, described CFB boiler 13 produces high temperature and high pressure steam and is transported to described the 5th steam turbine 14, described the 5th steam turbine 14 utilizes the high temperature and high pressure steam acting to provide driving force for described generator 16, described generator 16 water supply mud production systems power supply, high temperature and high pressure steam changes low temperature and low pressure steam into after 14 actings of described the 5th steam turbine, described the 5th steam turbine 14 is transported to respectively described the first steam turbine 4 with low temperature and low pressure steam through described the second valve 15, described the second steam turbine 5, described the 3rd steam turbine 6 and described the 4th steam turbine 7, described the first steam turbine 4 utilizes the low temperature and low pressure steam acting to provide driving force for described high-temperature blower 8, described high-temperature blower 8 is used for the waste gas discharge of cement production system and the supply of live gas, described the second steam turbine 5 utilizes the low temperature and low pressure steam acting to provide driving force for described circulating fan 9, described circulating fan 9 is used for the oven dry of cement production system powder stock, described the 3rd steam turbine 6 utilizes the low temperature and low pressure steam acting to provide driving force for described exhaust blower 10, described exhaust blower 10 is used for getting rid of the waste gas of cement production system, described the 4th steam turbine 7 utilizes the low temperature and low pressure steam acting to provide driving force for described cement mill 11, described cement mill 11 is used for clinker is ground into powder, low temperature and low pressure steam is respectively through described the first steam turbine 4, described the second steam turbine 5, condense into water after described the 3rd steam turbine 6 and 7 actings of described the 4th steam turbine, described water pump 12 will be from described the first steam turbine 4, described the second steam turbine 5, the condensed water of described the 3rd steam turbine 6 and described the 4th steam turbine 7 is transported to described the first waste heat boiler 1 with recycling;
When cement production system normally moves, described the first waste heat boiler 1 and the second waste heat boiler 2 utilize the waste heat of cement production system to produce low temperature and low pressure steam, close described the second valve 15 and open described the first valve 3 this moment, low temperature and low pressure steam from described the first waste heat boiler 1 and described the second waste heat boiler 2 is transported to respectively described the first steam turbine 4 through described the first valve 3, described the second steam turbine 5, described the 3rd steam turbine 6 and described the 4th steam turbine 7, described the first steam turbine 4 utilizes the low temperature and low pressure steam acting to provide driving force for described high-temperature blower 8, described high-temperature blower 8 is used for the waste gas discharge of cement production system and the supply of live gas, described the second steam turbine 5 utilizes the low temperature and low pressure steam acting to provide driving force for described circulating fan 9, described circulating fan 9 is used for the oven dry of cement production system powder stock, described the 3rd steam turbine 6 utilizes the low temperature and low pressure steam acting to provide driving force for described exhaust blower 10, described exhaust blower 10 is used for getting rid of the waste gas of cement production system, described the 4th steam turbine 7 utilizes the low temperature and low pressure steam acting to provide driving force for described cement mill 11, described cement mill 11 is used for clinker is ground into powder, low temperature and low pressure steam is respectively through described the first steam turbine 4, described the second steam turbine 5, condense into water after described the 3rd steam turbine 6 and 7 actings of described the 4th steam turbine, described water pump 12 will be from described the first steam turbine 4, described the second steam turbine 5, the condensed water of described the 3rd steam turbine 6 and described the 4th steam turbine 7 is transported to described the first waste heat boiler 1 with recycling.
The pressure of described high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.The pressure of described low temperature and low pressure steam is 1.5-1.7MPa, and its temperature is 300-340 ℃.
In the present embodiment, described high-temperature blower 8 per hour consumes about 17 tons of low temperature and low pressure steams, and described circulating fan 9 per hour consumes about 21 tons of low temperature and low pressure steams, and described exhaust blower 10 per hour consumes about 9 tons of low temperature and low pressure steams.
The thermal technology who the utilizes the cement production system waste heat provided by the invention dynamical system that links provides driving force with the steam turbine instead of electr ic motor for high-temperature blower, circulating fan, exhaust blower and cement mill, the waste heat that has directly utilized cement production system to produce, the energy loss that has produced in Energy transfer and the conversion process of energy when effectively having reduced UTILIZATION OF VESIDUAL HEAT IN.Described dynamical system can be reduced by at least 5% energy loss in Energy transfer and conversion process of energy, for realizing that energy-saving and emission-reduction provide effective way.
Should be appreciated that the above detailed description of technical scheme of the present invention being carried out by preferred embodiment is illustrative and not restrictive.Those of ordinary skill in the art is reading on the basis of specification of the present invention and can make amendment to the technical scheme that each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. utilize the thermal technology of the cement production system waste heat dynamical system that links, it is characterized in that,
This dynamical system comprises the first waste heat boiler (1), the second waste heat boiler (2), the first valve (3), the first steam turbine (4), the second steam turbine (5), the 3rd steam turbine (6), the 4th steam turbine (7), high-temperature blower (8), circulating fan (9), exhaust blower (10), cement mill (11), water pump (12), CFB boiler (13), the 5th steam turbine (14) and the second valve (15);
Cement production system by pipeline respectively with described the first waste heat boiler (1) be connected waste heat boiler (2) and be connected, described the first waste heat boiler (1) and the second waste heat boiler (2) by pipeline through described the first valve (3) respectively with described the first steam turbine (4), described the second steam turbine (5), described the 3rd steam turbine (6) be connected the 4th steam turbine (7) and connect, described CFB boiler (13) is connected with described the 5th steam turbine (14) by pipeline, described the 5th steam turbine (14) through described the second valve (15) respectively with described the first steam turbine (4), described the second steam turbine (5), described the 3rd steam turbine (6) be connected the 4th steam turbine (7) and connect, described the first steam turbine (4) is connected with high-temperature blower (8) axle, described the second steam turbine (5) is connected with described circulating fan (9) axle, described the 3rd steam turbine (6) is connected with described exhaust blower (10) axle, described the 4th steam turbine (7) is connected with described cement mill (11) axle, described the first steam turbine (4), described the second steam turbine (5), described the 3rd steam turbine (6) be connected the 4th steam turbine (7) and be connected with described water pump (12) by pipeline, described water pump (12) is connected with described the first waste heat boiler (1) by pipeline.
2. the thermal technology who the utilizes the cement production system waste heat according to claim 1 dynamical system that links is characterized in that described dynamical system further comprises generator (16).
3. the thermal technology who the utilizes the cement production system waste heat according to claim 2 dynamical system that links is characterized in that described the 5th steam turbine (14) is connected with described generator (16) axle.
4. the thermal technology who the utilizes the cement production system waste heat according to claim 1 dynamical system that links, it is characterized in that, when described dynamical system is started shooting from cold conditions, described CFB boiler (13) produces high temperature and high pressure steam, the pressure of described high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.
5. the thermal technology who the utilizes the cement production system waste heat according to claim 1 dynamical system that links, it is characterized in that, when described dynamical system is started shooting from cold conditions, described CFB boiler (13) produces high temperature and high pressure steam and is transported to described the 5th steam turbine (14), and high temperature and high pressure steam changes low temperature and low pressure steam into after described the 5th steam turbine (14) acting; When cement production system normally moved, described the first waste heat boiler (1) and the second waste heat boiler (2) utilized the waste heat of cement production system to produce low temperature and low pressure steam; The pressure of described low temperature and low pressure steam is 1.5-1.7MPa, and its temperature is 300-340 ℃.
6. the thermal technology who the utilizes the cement production system waste heat according to claim 1 dynamical system that links is characterized in that described dynamical system can be reduced by at least 5% energy loss in Energy transfer and conversion process of energy.
7. the thermal technology who the utilizes the cement production system waste heat as claimed in claim 1 using method of dynamical system that links is characterized in that the method comprises:
When described dynamical system is started shooting from cold conditions, close described the first valve (3) and open described the second valve (15), described CFB boiler (13) produces high temperature and high pressure steam and is transported to described the 5th steam turbine (14), described the 5th steam turbine (14) utilizes the high temperature and high pressure steam acting to provide driving force for generator (16), the power supply of described generator (16) water supply mud production system, high temperature and high pressure steam changes low temperature and low pressure steam into after described the 5th steam turbine (14) acting, described the 5th steam turbine (14) is transported to respectively described the first steam turbine (4) with low temperature and low pressure steam through described the second valve (15), described the second steam turbine (5), described the 3rd steam turbine (6) and described the 4th steam turbine (7), described the first steam turbine (4) utilizes the low temperature and low pressure steam acting to provide driving force for described high-temperature blower (8), described high-temperature blower (8) is used for the waste gas discharge of cement production system and the supply of live gas, described the second steam turbine (5) utilizes the low temperature and low pressure steam acting to provide driving force for described circulating fan (9), described circulating fan (9) is used for the oven dry of cement production system powder stock, described the 3rd steam turbine (6) utilizes the low temperature and low pressure steam acting to provide driving force for described exhaust blower (10), described exhaust blower (10) is used for getting rid of the waste gas of cement production system, described the 4th steam turbine (7) utilizes the low temperature and low pressure steam acting to provide driving force for described cement mill (11), described cement mill (11) is used for clinker is ground into powder, low temperature and low pressure steam is respectively through described the first steam turbine (4), described the second steam turbine (5), condense into water after described the 3rd steam turbine (6) and described the 4th steam turbine (7) acting, described water pump (12) will be from described the first steam turbine (4), described the second steam turbine (5), the condensed water of described the 3rd steam turbine (6) and described the 4th steam turbine (7) is transported to described the first waste heat boiler (1) with recycling;
When cement production system normally moves, described the first waste heat boiler (1) and the second waste heat boiler (2) utilize the waste heat of cement production system to produce low temperature and low pressure steam, close described the second valve (15) and open described the first valve (3) this moment, low temperature and low pressure steam from described the first waste heat boiler (1) and described the second waste heat boiler (2) is transported to respectively described the first steam turbine (4) through described the first valve (3), described the second steam turbine (5), described the 3rd steam turbine (6) and described the 4th steam turbine (7), described the first steam turbine (4) utilizes the low temperature and low pressure steam acting to provide driving force for described high-temperature blower (8), described high-temperature blower (8) is used for the waste gas discharge of cement production system and the supply of live gas, described the second steam turbine (5) utilizes the low temperature and low pressure steam acting to provide driving force for described circulating fan (9), described circulating fan (9) is used for the oven dry of cement production system powder stock, described the 3rd steam turbine (6) utilizes the low temperature and low pressure steam acting to provide driving force for described exhaust blower (10), described exhaust blower (10) is used for getting rid of the waste gas of cement production system, described the 4th steam turbine (7) utilizes the low temperature and low pressure steam acting to provide driving force for described cement mill (11), described cement mill (11) is used for clinker is ground into powder, low temperature and low pressure steam is respectively through described the first steam turbine (4), described the second steam turbine (5), condense into water after described the 3rd steam turbine (6) and described the 4th steam turbine (7) acting, described water pump (12) will be from described the first steam turbine (4), described the second steam turbine (5), the condensed water of described the 3rd steam turbine (6) and described the 4th steam turbine (7) is transported to described the first waste heat boiler (1) with recycling.
8. the thermal technology who the utilizes the cement production system waste heat according to claim 7 using method of dynamical system that links is characterized in that the pressure of described high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.
9. the thermal technology who the utilizes the cement production system waste heat according to claim 7 using method of dynamical system that links is characterized in that the pressure of described low temperature and low pressure steam is 1.5-1.7MPa, and its temperature is 300-340 ℃.
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| CN103742210A (en) * | 2013-12-27 | 2014-04-23 | 陕西大唐新能电力设计有限公司 | Method for dragging cement production line rotating machine by adopting steam turbine |
| CN105604619B (en) * | 2015-09-01 | 2018-12-04 | 湖北施尔佳肥业有限公司 | A kind of energy saving technique equipment of the two-stage high-efficiency comprehensive utilization of high steam |
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| CN101696080A (en) * | 2009-10-30 | 2010-04-21 | 蚌埠玻璃工业设计研究院 | Smoke exhaust system of glass melting furnace |
| CN101852105A (en) * | 2010-05-25 | 2010-10-06 | 山西省电力勘测设计院 | Steam exhaust direct-discharge system of feed pump turbine of direct air-cooling unit |
| CN202329232U (en) * | 2011-11-15 | 2012-07-11 | 东方希望重庆水泥有限公司 | Thermotechnical linkage power system for utilizing waste heat of cement production system |
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| DE102008047219A1 (en) * | 2008-09-15 | 2010-03-25 | Siemens Aktiengesellschaft | Process for the extraction of bitumen and / or heavy oil from an underground deposit, associated plant and operating procedures of this plant |
| JP5421567B2 (en) * | 2008-10-03 | 2014-02-19 | 株式会社神鋼環境ソリューション | Waste treatment facilities and methods of using recovered heat in waste treatment facilities |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101696080A (en) * | 2009-10-30 | 2010-04-21 | 蚌埠玻璃工业设计研究院 | Smoke exhaust system of glass melting furnace |
| CN101852105A (en) * | 2010-05-25 | 2010-10-06 | 山西省电力勘测设计院 | Steam exhaust direct-discharge system of feed pump turbine of direct air-cooling unit |
| CN202329232U (en) * | 2011-11-15 | 2012-07-11 | 东方希望重庆水泥有限公司 | Thermotechnical linkage power system for utilizing waste heat of cement production system |
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