CN201302383Y - Multistage exhaust gas pumping system for residual heat power generation of cooling machine of kiln head of cement kiln - Google Patents
Multistage exhaust gas pumping system for residual heat power generation of cooling machine of kiln head of cement kiln Download PDFInfo
- Publication number
- CN201302383Y CN201302383Y CNU2008201677156U CN200820167715U CN201302383Y CN 201302383 Y CN201302383 Y CN 201302383Y CN U2008201677156 U CNU2008201677156 U CN U2008201677156U CN 200820167715 U CN200820167715 U CN 200820167715U CN 201302383 Y CN201302383 Y CN 201302383Y
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- kiln
- exhaust gas
- waste gas
- cooler
- cement kiln
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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
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a multistage exhaust gas pumping system of a cooling machine of a kiln head of a cement kiln in a cement kiln residual heat power generation system, and aims at providing a system capable of pumping exhaust gas generated by the cooling machine of the kiln head of the cement kiln in stages according to different temperatures thereof so as to generate steam at a higher level of pressure and temperature and greatly improve the residual heat power generation capacity. The utility model adopts the technical proposal that the multistage exhaust gas pumping system of the cooling machine of the kiln head of the cement kiln for residual heat power generation comprises a clinker cooling machine of the kiln head of the cement kiln, exhaust gas pumping openings and exhaust gas pipelines for conveying the exhaust gas arranged on the clinker cooling machine of the kiln head of the cement kiln, wherein, more than two exhaust gas pumping openings are arranged on the top plate or the side wall of the clinker cooling machine of the kiln head of the cement kiln and connected with a kiln head waste heat boiler via respective exhaust gas pipelines or one combined exhaust gas pipeline, and the exhaust gas pumping openings are characterized in that the exhaust gas pumping openings close to a feed end are used for pumping exhaust gas at the temperature of 400 DEG to 600 DEG, and the openings in other positions are used for pumping exhaust gas at the temperature of 150 DEG to 400 DEG.
Description
Technical field
The utility model relates to the multistage waste gas system of getting of kiln hood cooler in a kind of cement kiln waste-heat power generation system, especially with the supporting pure middle and low temperature afterheat generating system of cement kiln in the multistage waste gas system of getting.
Background technology
Waste gas residual heat distribution situation in the conventional cement kiln clinker cooling machine (not with pure middle and low temperature cogeneration) is as shown in Figure 4: the clinker temperature that kiln discharge enters the feed end 4 of chamotte cooler 5 is about 1350～1400 ℃.In cooler,, when reducing to about 90 ℃, clinker temperature discharges cooler from discharge end 7 through the air cooling that cooler bottom air blast 6 blasts.In cooler, clinker temperature 7 substantially be linear decline from feed end 4 to discharge end.About per kilogram grog 0.75～0.80Nm that clinker temperature produces when 1350～1400 ℃ of feed end 4 are cooled to about 600 ℃ that 4-1 orders
3Hot-air about-1000 ℃ (hereinafter to be referred as " waste gas) feed kiln hood and kiln tail dore furnace respectively and provide the burning required air for the coal dust of kiln hood and dore furnace as secondary wind B, tertiary air D; About per kilogram grog 1.1～1.36Nm of 600 ℃ of generations when being cooled to 90 ℃ of 7 of discharge ends that clinker temperature order from 4-1 in the cooler
3Waste gas about-280 ℃ is discharged cooler after water spray (S position) is cooled to about 220 ℃, and enters dust-precipitator 10 by Waste gas outlet 9 and pipeline, and the waste gas after dust-precipitator gathers dust enters atmosphere by blower fan 11 and chimney 12.
The structure of the chamotte cooler that present cement kiln pure middle and low temperature afterheat generating system is adopted and waste gas heat-obtaining mode be as shown in Figure 3: the clinker temperature that kiln discharge enters chamotte cooler (cooler feed end 4) still is about 1350～1400 ℃, in cooler, after the air cooling that cooler bottom air blast blasts, when reducing to about 90 ℃, clinker temperature still discharges cooler from the cooler discharge end.In cooler, per kilogram grog 0.75～0.8Nm that clinker temperature produces when 1350～1400 ℃ of feed end 4 are cooled to about 600 ℃ that 4-1 orders
3Waste gas about-1000 ℃ still feeds kiln hood and kiln tail dore furnace as coal dust firing secondary wind B, tertiary air D; In the cooler, per kilogram grog 0.8～0.85Nm that 600 ℃ of ordering from 4-1 of clinker temperature produce when continuing to be cooled to about 190 ℃ that about 4-5 orders
3-390 ℃ of waste gas by after the taking out exhaust outlet 8 and extract out of cooler middle part, are transported to kiln hood waste heat boiler by pipeline H and are used for generating, take out the exhaust outlet specification and determine according to cement kiln scale and cooler specification of equipment; In the cooler, per kilogram grog 0.3～0.52Nm that 190 ℃ of ordering from 4-5 of clinker temperature produce when continuing to be cooled to 90 ℃ of discharge end 7
3Waste gas about-110 ℃ still enters dust-precipitator after discharging from cooler discharge end Waste gas outlet 9, the waste gas after dust-precipitator 10 gathers dust enters atmosphere by blower fan 11 and chimney 12 again.
The waste gas that is used to generate electricity of the above chamotte cooler is got the problem that the gas mode exists: according to the distribution and the grog cooling procedure of clinker temperature in the cooler, and the EGT difference of 600 ℃ of generations when being cooled to 190 ℃ that 4-5 orders that clinker temperature order from 4-1 in the chamotte cooler.Along with the reduction of clinker temperature, EGT also decreases: when clinker temperature was 4-1 order 600 ℃, the EGT that the 4-1 point produces can reach 550 ℃; When clinker temperature was reduced to 450 ℃ that 4-3 orders, the EGT that the 4-3 point produces was about 390 ℃; When clinker temperature was reduced to 190 ℃ that 4-5 orders, the EGT that the 4-5 point produces was reduced to about 150 ℃; About 600 ℃ of 550 ℃ to 150 ℃ waste gas total amounts that produce when being reduced to 190 ℃ that 4-5 orders that clinker temperature is ordered from 4-1 are about per kilogram grog 0.8～0.85Nm
3The waste gas that is used to generate electricity of kiln hood cooler is got the gas mode in the cement kiln pure middle and low temperature afterheat generating system at present, after 550 ℃ to 150 ℃ waste gas mixing that produce from 4-1 point to 4-5 point in the cooler, take out exhaust outlet 8 and extract out for set one from cooler middle part, the mix waste gas temperature of its extraction only is 390 ℃.This mode is that warm waste gas mixes with 150～390 ℃ of low temperature waste gas of 4-3 point to the generation of 4-5 point in 390～550 ℃ that 4-1 point in the cooler to 4-3 point is produced, and the EGT that makes 390～550 ℃ EGT all reduce to 390 ℃, 150～390 ℃ all rises to 390 ℃.For the waste gas of 390～550 ℃ of relatively-high temperatures, failing effectively to utilize its temperature is capacity for work like this.Because waste gas mixes the restriction (only being about 390 ℃) of its temperature of back, makes waste gas residual heat only can produce low-pressure low-temperature steam and hot water, thereby can not give full play to the generating capacity of waste heat.
The utility model content
Technical problem to be solved in the utility model is the deficiency that overcomes the above-mentioned background technology, the improvement that provides a kind of cement kiln kiln hood cooler to get waste gas system, the waste gas that this system should be able to be produced cement kiln kiln hood cooler takes out by the different classifications of its temperature, for use in producing the more steam of high pressure and temperature grade after the cogeneration, increase substantially the cogeneration ability.
The technical scheme that the utility model provides is: be used for the multistage waste gas system of getting of cement kiln kiln hood cooler of cogeneration, comprise cement kiln kiln hood chamotte cooler, be arranged on taking out exhaust outlet and will take out exhaust outlet on the cement kiln kiln hood chamotte cooler and be communicated with kiln hood waste heat boiler to carry the exhaust piping of waste gas; It is characterized in that the top board of described cement kiln kiln hood chamotte cooler or sidewall be provided with plural be used to generate electricity take out exhaust outlet, these take out exhaust outlet respectively by the kiln hood waste heat boiler in the exhaust piping connection afterheat generating system separately, the described exhaust outlet of taking out is the exhaust outlet of taking out that is used to extract 400～600 ℃ of temperature waste gas near the feed end position, and other position is used to extract the exhaust outlet of taking out of 150～400 ℃ of temperature waste gas.
The exhaust piping of exhaust outlet by a merging of taking out at described other position connected waste heat boiler in the afterheat generating system.
Described each take out exhaust outlet, its be positioned at chamotte cooler top board lumen port or sidewall lumen port near be provided with the waste gas plate washer.
Described waste gas plate washer lays respectively at chamotte cooler top board inner chamber and takes out between the exhaust outlet near feed end, discharge end and per two.
Since the utility model on chamotte cooler top board or sidewall, be respectively equipped with plural be used to generate electricity take out exhaust outlet, make the waste gas of different temperatures after extraction mouth is separately extracted out, go to carry out cogeneration again, thereby the waste gas of relatively-high temperature and mixing of low temperature waste gas have been avoided, also promptly avoided the temperature loss of relatively-high temperature waste gas, created condition for realizing the principle that heat carries out cascade utilization according to its temperature, correspondingly make the cooling machine waste gas waste heat by original only can produce low-pressure low-temperature steam and hot water be adjusted into press in can producing simultaneously time in warm steam in temperature or the middle pressure, low-pressure low-temperature steam and hot water have increased substantially cogeneration ability (can improve 15～30%).In addition, the waste gas plate washer that the utility model is set can obviously improve the airflow state of cooler inner chamber, when guaranteeing effectively that the EGT of being extracted out is relatively stable, improving the cogeneration ability, does not influence the production run of cement kiln.
Description of drawings
Fig. 1 is that the mutual alignment of the utility model and cement kiln cooler concerns schematic diagram.
Fig. 2 is the structure enlarged diagram of the chamotte cooler among Fig. 1.
Fig. 3 is the schematic diagram of the cement kiln of existing outfit afterheat generating system.
Fig. 4 is existing not with the cement kiln schematic diagram of waste heat power generation equipment.
The specific embodiment
As shown in Figure 1 and Figure 2,, go out 1350～1400 ℃ of grogs that rotary kiln 2 enters (arrow A direction) chamotte cooler, the per kilogram 0.75～0.8Nm that produces when in cooler, being cooled to 600 ℃ that 4-1 orders for not influencing the production of clinker hear rate and cement kiln
3Waste gas about-1000 ℃ still go into kiln and dore furnace as coal dust firing with secondary wind B, tertiary air D.In the chamotte cooler, the waste gas that 600 ℃ of ordering from 4-1 of clinker temperature produce when being cooled to 190 ℃ that 4-5 orders then is extracted and carries out cogeneration; According to kiln hood waste heat boiler in grog and EGT distribution situation and the afterheat generating system situation is set, its extraction mode has following multiple:
First kind of extraction mode is divided into two parts:
First, grog, is transported to waste heat boiler by pipeline E2 and is used for generating by being that 600 ℃ to the 500 ℃ interval exhaust outlets 18 of taking out that are provided with are extracted out near hot end for cooler (feed end) clinker temperature from about 600 ℃ of 450～550 ℃ of waste gas that produce when being cooled to about 500 ℃ that 4-2 orders of 4-1 point.This extraction exhaust outlet is positioned on the top board or sidewall of cooler, and particular location and opening size are decided according to concrete conditions such as cement kiln scale, the configuration of chamotte cooler air blast, cooler equipment situations.
Second portion, about 500 ℃ of 150～450 ℃ of waste gas that produce when being cooled to about 190 ℃ that 4-5 orders that grog is ordered from 4-2 are by being that 500 ℃ to the 190 ℃ interval exhaust outlets 16 and 17 (or take out exhaust outlet with 16 and 17 two and merge into and take out exhaust outlet) of taking out that are provided with are extracted out near cooler cold junction (discharge end) clinker temperature, transport to waste heat boiler by exhaust piping G, E1 (or merge into an exhaust piping with two exhaust pipings of G, E1) respectively and are used for generating electricity.This is taken out on the top board or sidewall that exhaust outlet is positioned at cooler, and particular location and opening size are decided according to concrete conditions such as cement kiln specification, the configuration of chamotte cooler air blast, cooler equipment too.Two parts waste gas total amount of extracting out still remains unchanged, and generally still is per kilogram grog 0.8～0.85Nm
3
Second kind of extraction mode is divided into three parts:
First, grog, is transported to waste heat boiler by pipeline E2 and is used for generating by being that 600 ℃ to the 500 ℃ interval exhaust outlets 18 of taking out that are provided with are extracted out near hot end for cooler (feed end) clinker temperature from about 600 ℃ of 450～550 ℃ of waste gas that produce when being cooled to about 500 ℃ that 4-2 orders of 4-1 point.This extraction exhaust outlet is positioned on the top board or sidewall of cooler, and particular location and opening size are decided according to concrete conditions such as cement kiln scale, the configuration of chamotte cooler air blast, cooler equipment situations.
Second portion, about 500 ℃ of 300～450 ℃ of waste gas that produce when being cooled to about 350 ℃ that 4-4 orders that grog is ordered from 4-2 are that 500 ℃ to the 350 ℃ interval exhaust outlets 17 of taking out that are provided with are extracted out by clinker temperature, transport to waste heat boiler by exhaust piping E1 and are used for generating.This extraction exhaust outlet is positioned on the top board or sidewall of cooler, and particular location and opening size are decided according to concrete conditions such as cement kiln specification, the configuration of chamotte cooler air blast, cooler equipment too.
Third part, about 350 ℃ of 150～300 ℃ of waste gas that produce when being cooled to about 190 ℃ that 4-5 orders that grog is ordered from 4-4 are that 350 ℃ to the 190 ℃ interval exhaust outlets 16 of taking out that are provided with are extracted out by clinker temperature, transport to waste heat boiler by exhaust piping G and are used for generating.This extraction exhaust outlet is positioned on the top board or sidewall of cooler, and particular location and opening size are decided according to concrete conditions such as cement kiln specification, the configuration of chamotte cooler air blast, cooler equipment too.Three part waste gas total amounts of above-mentioned extraction still remain unchanged, and generally still are per kilogram grog 0.8～0.85Nm
3
In the above dual mode, for keeping the relatively stable of the EGT of taking out, the raising effect of bleeding, these take out exhaust outlet be positioned at chamotte cooler top board or sidewall lumen port neighbouringly also be provided with some waste gas baffle plates.As shown in Figure 2, the waste gas baffle plate is separately positioned on the different parts of this cooler top board inner chamber, be provided with waste gas baffle plate 20-4, be provided with waste gas baffle plate 20-1 near feed end near discharge end, take out for all the other per two and also be provided with waste gas baffle plate (as waste gas baffle plate 20-2 among Fig. 1 and waste gas baffle plate 20-3) between the exhaust outlet, the sagging length of waste gas baffle plate is generally decided according to the concrete condition of different size cooler.
The third extraction mode is divided into four parts or extracts mode out more than four parts:
The principle of this mode and the specific embodiment are identical with second kind of extraction mode, just the situation setting is set more than three the waste gas that exhaust outlet is extracted different temperatures respectively out of taking out, transports to waste heat boiler by corresponding pipeline again and be used for generating according to kiln hood waste heat boiler in grog and EGT distribution situation and the afterheat generating system.
Also have among the figure: raw material spout P, coal powder injection pipe 19 and 1, feeding chamber 15, dore furnace 14, preheater 13, tertiary-air pipe 3 and whirlwind tube C1 at different levels, C2, C3, C4 and C5, F is for leading to high-temperature blower or conditioning Tower or kiln tail waste heat boiler direction.
Claims (4)
1, the multistage waste gas system of getting of cement kiln kiln hood cooler that is used for cogeneration comprises cement kiln kiln hood chamotte cooler (5), is arranged on taking out exhaust outlet and will take out exhaust outlet on the cement kiln kiln hood chamotte cooler and is communicated with kiln hood waste heat boiler to carry the exhaust piping of waste gas; It is characterized in that the top board of described cement kiln kiln hood chamotte cooler or sidewall be provided with plural be used to generate electricity take out exhaust outlet, these are taken out exhaust outlet and connect waste heat boiler in the afterheat generating system by exhaust piping separately; Described take out exhaust outlet be near the feed end position be used to extract 400～600 ℃ of temperature waste gas take out exhaust outlet (18), and other position be used to extract 150～400 ℃ of temperature waste gas take out exhaust outlet (16,17).
2, the multistage waste gas system of getting of cement kiln kiln hood cooler that is used for cogeneration according to claim 1, what it is characterized in that described other position takes out exhaust outlet (16,17) by the waste heat boiler in the exhaust piping connection afterheat generating system of a merging.
3, the multistage waste gas system of getting of cement kiln kiln hood cooler that is used for cogeneration according to claim 1 and 2, it is characterized in that described each take out exhaust outlet, its be positioned at chamotte cooler top board lumen port or sidewall lumen port near be provided with the waste gas plate washer.
4, the multistage waste gas system of getting of cement kiln kiln hood cooler that is used for cogeneration according to claim 3 is characterized in that described waste gas plate washer lays respectively at chamotte cooler top board inner chamber and takes out between the exhaust outlet near feed end, discharge end and per two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201677156U CN201302383Y (en) | 2008-11-11 | 2008-11-11 | Multistage exhaust gas pumping system for residual heat power generation of cooling machine of kiln head of cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201677156U CN201302383Y (en) | 2008-11-11 | 2008-11-11 | Multistage exhaust gas pumping system for residual heat power generation of cooling machine of kiln head of cement kiln |
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| Publication Number | Publication Date |
|---|---|
| CN201302383Y true CN201302383Y (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201677156U Expired - Lifetime CN201302383Y (en) | 2008-11-11 | 2008-11-11 | Multistage exhaust gas pumping system for residual heat power generation of cooling machine of kiln head of cement kiln |
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| CN (1) | CN201302383Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829638A (en) * | 2012-09-19 | 2012-12-19 | 河南易能达能源科技有限公司 | System using cement kiln front waste gas as cooling air of grate cooler |
| CN105222601A (en) * | 2015-11-02 | 2016-01-06 | 北京建筑材料科学研究总院有限公司 | A kind of method utilizing the moisture rubbish of waste heat mummification of quality coal in cement kiln systems |
-
2008
- 2008-11-11 CN CNU2008201677156U patent/CN201302383Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829638A (en) * | 2012-09-19 | 2012-12-19 | 河南易能达能源科技有限公司 | System using cement kiln front waste gas as cooling air of grate cooler |
| CN105222601A (en) * | 2015-11-02 | 2016-01-06 | 北京建筑材料科学研究总院有限公司 | A kind of method utilizing the moisture rubbish of waste heat mummification of quality coal in cement kiln systems |
| CN105222601B (en) * | 2015-11-02 | 2017-04-19 | 北京建筑材料科学研究总院有限公司 | Method for drying water-contained garbage by using afterheat of cement kiln system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN EAST NEW ENERGY DEVELOPMENT CO., LTD. Free format text: FORMER OWNER: TANG JINQUAN Effective date: 20100513 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310003 HOUSE 4, NO.450, ZHONGSHAN NORTH ROAD, HANGZHOU CITY, ZHEJIANG PROVINCE TO: 116023 4/F, UNIT 3, BUILDING 1, NO.2, XUEZI STREET, HIGH-TECH INDUSTRY PARK, DALIAN CITY, LIAONING PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20100513 Address after: 4, building 3, building 1, building 2, No. 116023, street, hi tech Industrial Park, Liaoning, Dalian Patentee after: Dalian East New Energy Development Co., Ltd. Address before: 4, building 450, No. 310003, Zhongshan North Road, Zhejiang, Hangzhou Patentee before: Tang Jinquan |
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| CX01 | Expiry of patent term |
Granted publication date: 20090902 |
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| CX01 | Expiry of patent term |