CN102393149A - 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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- CN102393149A CN102393149A CN2011103620996A CN201110362099A CN102393149A CN 102393149 A CN102393149 A CN 102393149A CN 2011103620996 A CN2011103620996 A CN 2011103620996A CN 201110362099 A CN201110362099 A CN 201110362099A CN 102393149 A CN102393149 A CN 102393149A
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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
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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 the power conversion utilization and the dynamical system field of cement production system, particularly a kind of thermal technology who utilizes the cement production system waste heat link dynamical system and method for using thereof.
Background technology
Along with country improves with the requirement that improves energy-saving efficiency reducing carbon emission day by day, each manufacturing enterprise has mentioned important agenda with energy-saving and emission-reduction.
It is that high-temperature blower, circulating fan, exhaust blower and cement mill provide driving force that the cement production system of prior art adopts motor; And the waste heat that cement production system produces all flows to steam turbine, and steam turbine is given the power supply of cement production system after utilizing cogeneration again.The lot of energy loss is all arranged in waste heat conveying, steam turbine generating and power supply process.
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 method for using 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 first waste heat boiler, second waste heat boiler, first valve, first steam turbine, 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 second valve.
Cement production system is connected with second waste heat boiler with said first waste heat boiler respectively through pipeline; Said first waste heat boiler is connected with said first steam turbine, said second steam turbine, said the 3rd steam turbine and said the 4th steam turbine respectively through said first valve through pipeline with second waste heat boiler; Said CFB boiler is connected with said the 5th steam turbine through pipeline; Said the 5th steam turbine is connected with said first steam turbine, said second steam turbine, said the 3rd steam turbine and said the 4th steam turbine respectively through said second valve; Said first steam turbine is connected with said high-temperature blower axle; Said second steam turbine is connected with said circulated air arbor; Said the 3rd steam turbine is connected with said air draft arbor; Said the 4th steam turbine is connected with said cement grinding mill arbor, and said first steam turbine, said second steam turbine, said the 3rd steam turbine and said the 4th steam turbine are connected with said water pump through pipeline, and said water pump is connected with said first waste heat boiler through pipeline.
Preferably, said dynamical system further comprises generator.
Preferably, said the 5th steam turbine is connected with said generator shaft.
Preferably, the pressure of said high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.
Preferably, the pressure of said low temperature and low pressure steam is 1.5-1.7MPa, and its temperature is 300-340 ℃.
The link method for using of dynamical system of the thermal technology who utilizes the cement production system waste heat provided by the invention comprises:
Said dynamical system is when cold conditions is started shooting; Close said first valve and open said second valve; Said CFB boiler produces high temperature and high pressure steam and it is transported to said the 5th steam turbine; Said the 5th steam turbine utilizes the high temperature and high pressure steam acting for said generator driving force to be provided; Said generator is used for supplying power to the cement production system; High temperature and high pressure steam changes low temperature and low pressure steam into after said the 5th steam turbine acting; Said the 5th steam turbine is transported to said first steam turbine, said second steam turbine, said the 3rd steam turbine and said the 4th steam turbine with low temperature and low pressure steam respectively through said second valve; Said first steam turbine utilizes the low temperature and low pressure steam acting for said high-temperature blower driving force to be provided; Said high-temperature blower is used for the waste gas discharge of cement production system and the supply of live gas, and said second steam turbine utilizes the low temperature and low pressure steam acting for said circulating fan driving force to be provided, and said circulating fan is used for the oven dry of cement production system powder stock; Said the 3rd steam turbine utilizes the low temperature and low pressure steam acting for said exhaust blower driving force to be provided; Said exhaust blower is used to get rid of the waste gas of cement production system, and said the 4th steam turbine utilizes the low temperature and low pressure steam acting for said cement mill driving force to be provided, and said cement mill is used for clinker is ground into powder; Low temperature and low pressure steam condenses into water respectively after said first steam turbine, said second steam turbine, said the 3rd steam turbine and the acting of said the 4th steam turbine, said water pump will be transported to said first waste heat boiler with recycle from the condensed water of said first steam turbine, said second steam turbine, said the 3rd steam turbine and said the 4th steam turbine;
When cement production system normally moves; Said first waste heat boiler and second waste heat boiler utilize the waste heat of cement production system to produce low temperature and low pressure steam; Close said second valve and open said first valve this moment; Low temperature and low pressure steam from said first waste heat boiler and said second waste heat boiler is transported to said first steam turbine, said second steam turbine, said the 3rd steam turbine and said the 4th steam turbine respectively through said first valve; Said first steam turbine utilizes the low temperature and low pressure steam acting for said high-temperature blower driving force to be provided; Said high-temperature blower is used for the waste gas discharge of cement production system and the supply of live gas; Said second steam turbine utilizes the low temperature and low pressure steam acting for said circulating fan driving force to be provided; Said circulating fan is used for the oven dry of cement production system powder stock; Said the 3rd steam turbine utilizes the low temperature and low pressure steam acting for said exhaust blower driving force to be provided; Said exhaust blower is used to get rid of the waste gas of cement production system, and said the 4th steam turbine utilizes the low temperature and low pressure steam acting for said cement mill driving force to be provided, and said cement mill is used for clinker is ground into powder; Low temperature and low pressure steam condenses into water respectively after said first steam turbine, said second steam turbine, said the 3rd steam turbine and the acting of said the 4th steam turbine, said water pump will be transported to said first waste heat boiler with recycle from the condensed water of said first steam turbine, said second steam turbine, said the 3rd steam turbine and said the 4th steam turbine.
Preferably, the pressure of said high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.
Preferably, the pressure of said 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 is used steam turbine to substitute motor as high-temperature blower, circulating fan, exhaust blower and cement mill driving force to be provided; The waste heat that has directly utilized cement production system to produce, the energy loss that has produced in energy conveying and the conversion process of energy when having reduced UTILIZATION OF VESIDUAL HEAT IN effectively.Said dynamical system can be reduced by at least 5% energy loss in energy conveying and conversion process of energy, for realizing that energy-saving and emission-reduction provide effective way.
Description of drawings
Fig. 1 is the link sketch map 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 accompanying drawing and embodiment summary of the invention of the present invention is done further to describe.
The thermal technology who the utilizes the cement production system waste heat provided by the invention dynamical system that links comprises first waste heat boiler 1, second waste heat boiler 2, first valve 3, first steam turbine 4, 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, second valve 15 and generator 16, and is as shown in Figure 1.
Cement production system is connected with second waste heat boiler 2 with said first waste heat boiler 1 respectively through pipeline; Said first waste heat boiler 1 and second waste heat boiler 2 are connected with said the 4th steam turbine 7 with said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 respectively through said first valve 3 through pipeline; Said CFB boiler 13 is connected with said the 5th steam turbine 14 through pipeline; Said the 5th steam turbine 14 is connected with said the 4th steam turbine 7 with said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 respectively through said second valve 15; Said first steam turbine 4 is connected with 8 of said high-temperature blowers; Said second steam turbine 5 is connected with 9 of said circulating fans; Said the 3rd steam turbine 6 is connected with 10 of said exhaust blowers; Said the 4th steam turbine 7 is connected with 11 of said cement mills; Said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 are connected with said water pump 12 through pipeline with said the 4th steam turbine 7, and said water pump 12 is connected with said first waste heat boiler 1 through pipeline, and said the 5th steam turbine 14 is connected with 16 in said generator.
The link method for using of dynamical system of the thermal technology who utilizes the cement production system waste heat provided by the invention comprises:
Said dynamical system is when cold conditions is started shooting; Close said first valve 3 and open said second valve 15; Said CFB boiler 13 produces high temperature and high pressure steam and it is transported to said the 5th steam turbine 14; Said the 5th steam turbine 14 utilizes the high temperature and high pressure steam acting for said generator 16 driving force to be provided; Said generator 16 is used for supplying power to the cement production system; High temperature and high pressure steam changes low temperature and low pressure steam into after 14 actings of said the 5th steam turbine; Said the 5th steam turbine 14 is transported to said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 and said the 4th steam turbine 7 with low temperature and low pressure steam respectively through said second valve 15; Said first steam turbine 4 utilizes the low temperature and low pressure steam acting for said high-temperature blower 8 driving force to be provided; Said high-temperature blower 8 is used for the waste gas discharge of cement production system and the supply of live gas, and said second steam turbine 5 utilizes the low temperature and low pressure steam acting for said circulating fan 9 driving force to be provided, and said circulating fan 9 is used for the oven dry of cement production system powder stock; Said the 3rd steam turbine 6 utilizes the low temperature and low pressure steam acting for said exhaust blower 10 driving force to be provided; Said exhaust blower 10 is used to get rid of the waste gas of cement production system, and said the 4th steam turbine 7 utilizes the low temperature and low pressure steam acting for said cement mill 11 driving force to be provided, and said cement mill 11 is used for clinker is ground into powder; Low temperature and low pressure steam condenses into water respectively after said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 and 7 actings of said the 4th steam turbine, said water pump 12 will be transported to said first waste heat boiler 1 with recycle from the condensed water of said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 and said the 4th steam turbine 7;
When cement production system normally moves; Said first waste heat boiler 1 and second waste heat boiler 2 utilize the waste heat of cement production system to produce low temperature and low pressure steam; Close said second valve 15 and open said first valve 3 this moment; Be transported to said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 and said the 4th steam turbine 7 from the low temperature and low pressure steam of said first waste heat boiler 1 and said second waste heat boiler 2 respectively through said first valve 3; Said first steam turbine 4 utilizes the low temperature and low pressure steam acting for said high-temperature blower 8 driving force to be provided; Said high-temperature blower 8 is used for the waste gas discharge of cement production system and the supply of live gas; Said second steam turbine 5 utilizes the low temperature and low pressure steam acting for said circulating fan 9 driving force to be provided; Said circulating fan 9 is used for the oven dry of cement production system powder stock; Said the 3rd steam turbine 6 utilizes the low temperature and low pressure steam acting for said exhaust blower 10 driving force to be provided; Said exhaust blower 10 is used to get rid of the waste gas of cement production system, and said the 4th steam turbine 7 utilizes the low temperature and low pressure steam acting for said cement mill 11 driving force to be provided, and said cement mill 11 is used for clinker is ground into powder; Low temperature and low pressure steam condenses into water respectively after said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 and 7 actings of said the 4th steam turbine, said water pump 12 will be transported to said first waste heat boiler 1 with recycle from the condensed water of said first steam turbine 4, said second steam turbine 5, said the 3rd steam turbine 6 and said the 4th steam turbine 7.
The pressure of said high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.The pressure of said low temperature and low pressure steam is 1.5-1.7MPa, and its temperature is 300-340 ℃.
In the present embodiment, said high-temperature blower 8 per hour consumes about 17 tons of low temperature and low pressure steams, and said circulating fan 9 per hour consumes about 21 tons of low temperature and low pressure steams, and said 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 is used steam turbine to substitute motor as high-temperature blower, circulating fan, exhaust blower and cement mill driving force to be provided; The waste heat that has directly utilized cement production system to produce, the energy loss that has produced in energy conveying and the conversion process of energy when having reduced UTILIZATION OF VESIDUAL HEAT IN effectively.Said dynamical system can be reduced by at least 5% energy loss in energy conveying 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 schematic and nonrestrictive.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 put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art 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 first waste heat boiler (1), second waste heat boiler (2), first valve (3), first steam turbine (4), 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 second valve (15);
Cement production system is connected with second waste heat boiler (2) with said first waste heat boiler (1) respectively through pipeline; Said first waste heat boiler (1) is connected with said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7) respectively through said first valve (3) through pipeline with second waste heat boiler (2); Said CFB boiler (13) is connected with said the 5th steam turbine (14) through pipeline; Said the 5th steam turbine (14) is connected with said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7) respectively through said second valve (15); Said first steam turbine (4) is connected with high-temperature blower (8) axle; Said second steam turbine (5) is connected with said circulating fan (9) axle; Said the 3rd steam turbine (6) is connected with said exhaust blower (10) axle; Said the 4th steam turbine (7) is connected with said cement mill (11) axle; Said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7) are connected with said water pump (12) through pipeline, and said water pump (12) is connected with said first waste heat boiler (1) through 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 said 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 said the 5th steam turbine (14) is connected with said generator (16) axle.
4. the thermal technology who the utilizes the cement production system waste heat according to claim 1 dynamical system that links is characterized in that the pressure of said 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 is characterized in that the pressure of said 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, said dynamical system can energy carry and conversion process of energy in be reduced by at least 5% energy loss.
7. the link method for using of dynamical system of the thermal technology who utilizes the cement production system waste heat as claimed in claim 1 is characterized in that this method comprises:
Said dynamical system is when cold conditions is started shooting; Close said first valve (3) and open said second valve (15); Said CFB boiler (13) produces high temperature and high pressure steam and it is transported to said the 5th steam turbine (14); Said the 5th steam turbine (14) utilizes the high temperature and high pressure steam acting for said generator (16) driving force to be provided; Said generator (16) is used for supplying power to the cement production system; High temperature and high pressure steam changes low temperature and low pressure steam into after said the 5th steam turbine (14) acting; Said the 5th steam turbine (14) is transported to said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7) with low temperature and low pressure steam respectively through said second valve (15); Said first steam turbine (4) utilizes the low temperature and low pressure steam acting for said high-temperature blower (8) driving force to be provided; Said high-temperature blower (8) is used for the waste gas discharge of cement production system and the supply of live gas; Said second steam turbine (5) utilizes the low temperature and low pressure steam acting for said circulating fan (9) driving force to be provided; Said circulating fan (9) is used for the oven dry of cement production system powder stock, and said the 3rd steam turbine (6) utilizes the low temperature and low pressure steam acting for said exhaust blower (10) driving force to be provided, and said exhaust blower (10) is used to get rid of the waste gas of cement production system; Said the 4th steam turbine (7) utilizes the low temperature and low pressure steam acting for said cement mill (11) driving force to be provided; Said cement mill (11) is used for clinker is ground into powder, and low temperature and low pressure steam condenses into water respectively after said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7) acting, and said water pump (12) will be transported to said first waste heat boiler (1) with recycle from the condensed water of said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7);
When cement production system normally moves; Said first waste heat boiler (1) and second waste heat boiler (2) utilize the waste heat of cement production system to produce low temperature and low pressure steam; Close said second valve (15) and open said first valve (3) this moment; Low temperature and low pressure steam from said first waste heat boiler (1) and said second waste heat boiler (2) is transported to said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7) respectively through said first valve (3); Said first steam turbine (4) utilizes the low temperature and low pressure steam acting for said high-temperature blower (8) driving force to be provided; Said high-temperature blower (8) is used for the waste gas discharge of cement production system and the supply of live gas; Said second steam turbine (5) utilizes the low temperature and low pressure steam acting for said circulating fan (9) driving force to be provided; Said circulating fan (9) is used for the oven dry of cement production system powder stock; Said the 3rd steam turbine (6) utilizes the low temperature and low pressure steam acting for said exhaust blower (10) driving force to be provided; Said exhaust blower (10) is used to get rid of the waste gas of cement production system; Said the 4th steam turbine (7) utilizes the low temperature and low pressure steam acting for said cement mill (11) driving force to be provided; Said cement mill (11) is used for clinker is ground into powder, and low temperature and low pressure steam condenses into water respectively after said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7) acting, and said water pump (12) will be transported to said first waste heat boiler (1) with recycle from the condensed water of said first steam turbine (4), said second steam turbine (5), said the 3rd steam turbine (6) and said the 4th steam turbine (7).
8. the link method for using of dynamical system of the thermal technology who utilizes the cement production system waste heat according to claim 7 is characterized in that the pressure of said high temperature and high pressure steam is 8.8-9.7MPa, and its temperature is 510-540 ℃.
9. the link method for using of dynamical system of the thermal technology who utilizes the cement production system waste heat according to claim 7 is characterized in that the pressure of said low temperature and low pressure steam is 1.5-1.7MPa, and its temperature is 300-340 ℃.
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| CN2011103620996A CN102393149B (en) | 2011-11-15 | 2011-11-15 | Thermotechnical linkage power system utilizing waste heat of cement production system and using method thereof |
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| CN105604619A (en) * | 2015-09-01 | 2016-05-25 | 湖北施尔佳肥业有限公司 | High pressure steam two-stage efficient comprehensive utilization energy-saving processing equipment |
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| CN102393149B (en) | 2013-10-30 |
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