CN108180765A - A kind of optimization method and system for producing 5000t clinker production line cogenerations daily - Google Patents
A kind of optimization method and system for producing 5000t clinker production line cogenerations daily Download PDFInfo
- Publication number
- CN108180765A CN108180765A CN201810135734.9A CN201810135734A CN108180765A CN 108180765 A CN108180765 A CN 108180765A CN 201810135734 A CN201810135734 A CN 201810135734A CN 108180765 A CN108180765 A CN 108180765A
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- China
- Prior art keywords
- grate
- cooler
- air duct
- wind
- wind turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
- F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a kind of optimization method and system for producing 5000t clinker production line cogenerations daily, optimization method includes：Optimize draught area；Ensure hot air duct without leaking out a little, it is ensured that enter expansion chamber hot air duct and enter stove hot air duct non-resistance；Optimize impeller clearance, increase the air inlet/outlet wind pressure of AQC boilers；One section of wind turbine whole running at full capacity of grate-cooler, air door all give 100% in not super one section of wind turbine rated current of grate-cooler；Adjustment two or three sections of wind turbine inlet air temperature of grate-cooler are mixed in set temperature with grate-cooler cooling blower airdoor control cold wind；Adjust pressure：Kiln head cover range of negative pressure is controlled in the range of 50pa 100pa, control one section of comb leeward of grate-cooler is pressed between 5000 5400pa.The inlet air temperature of AQC stoves can be improved using the method for the present invention, AQC boiler capacitys can be improved, waste heat power generation can be improved.Wind pressure in stove can be improved using the method for the present invention.The present invention can effectively improve kiln secondary air temperature, improve kiln unit-hour output, increase grate-cooler clinker loading.
Description
Technical field
The present invention relates to cogeneration technology field more particularly to a kind of produce 5000t clinker production line cogenerations daily
Optimization method and system.
Background technology
At present, cement afterheat generation generally existing generated output is not achieved the problem of design generated output, substantially domestic
The mating 10MW cogenerations unit major part ton clinker generated energy of 5000t/d clinker production lines is at 32 degree hereinafter, wherein because of cement
Design temperature, which is not achieved, in kiln operating procedure reason AQC stove intake air temperature causes evaporation capacity that designed rating is not achieved, and leads to steamer
Machine air inflow is unable to full production less than design air inflow.Steam turbine admission pressure control when waste heat boiler and steam turbine operate
Lead to generator power not in the case that unstable, systematic parameter adjustment mismatch, power factor Numerical Control numerical value are unstable
It can balance optimizing.
Invention content：
The object of the invention is exactly to solve the above-mentioned problems, to provide a kind of daily output 5000t clinker production line cogenerations
Optimization method and system, entering stove wind-warm syndrome and can reaching design temperature for cogeneration AQC stoves, improve the evaporation capacity of AQC boilers,
It being capable of stable generator high loaded process.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of optimization method for producing 5000t clinker production line cogenerations daily, including：
Optimize hot air duct：Optimize draught area；Ensure hot air duct without leaking out a little, it is ensured that enter expansion chamber hot air duct and
Enter stove hot air duct non-resistance；
Optimization bypass air-valve：Optimizing impeller clearance reduces inleakage, increases the air inlet/outlet wind pressure of AQC boilers；
Adjust grate-cooler wind turbine：One section of wind turbine whole running at full capacity of grate-cooler, air door is in not super one section of wind turbine of grate-cooler
100% is all given in the case of rated current；Two or three sections of grate-cooler of adjustment is mixed with grate-cooler cooling blower airdoor control cold wind
Wind turbine inlet air temperature is in set temperature；
Adjust pressure：Kiln head cover range of negative pressure is controlled in the range of -50pa-100pa, wind pressure under one section of control grate-cooler is combed
Between 5000-5400pa.
Optimization draught area specifically includes：The draught area for entering expansion chamber hot air duct of grate-cooler to expansion chamber is not less than
11㎡；Come out of the stove hot air duct draught area be not less than 8.4 ㎡.
Setting bypass air-valve specifically includes：Ensure to bypass air valve blades without abrasion, bypass air valve blades gap is not more than
0.5mm reduces inleakage；It is fully closed to zero-bit is scheduled on that air-valve is bypassed in normal production status, it is ensured that grate-cooler clinker cooling gives up
Gas is all recycled by AQC boilers, increases AQC boiler air inlet/outlet wind pressure.
Adjustment grate-cooler wind turbine specifically includes：Kiln hood air-introduced machine discharges 80 DEG C of exhaust gas and leads to two or three sections of fan induced draughts of grate-cooler
Mouth is recycled, and improves grate-cooler wind turbine inlet air temperature；
Adjustment two or three sections of wind turbine inlet air temperature of grate-cooler are mixed at 60 DEG C with grate-cooler cooling blower airdoor control cold wind；
The frequency adjusting method of two or three sections of wind turbines of grate-cooler is：15M wind turbines：40-48Hz, 16M wind turbine：35-45Hz, 17M
Wind turbine：25-30Hz, 18M wind turbine：25-30Hz, 19M wind turbine：20-25Hz, 20M wind turbine：15-20Hz.
Adjustment pressure further includes：Kiln hood air inducing unit frequency is in 43-44Hz, by adjusting kiln hood air-introduced machine FREQUENCY CONTROL
AQC boiler exports negative pressure is in the range of -1.45kp to -1.65kpa.
A kind of daily output 5000t clinker production line afterheat generating systems, using the optimization method, including：On chamotte kiln
Equipped with kiln head cover, grate-cooler is equipped in kiln head cover, the kiln head cover connects the entrance of expansion chamber by entering expansion chamber hot air duct,
The outlet of the expansion chamber connects AQC boilers by entering stove hot air duct, and the AQC boilers are also connected by hot air duct of coming out of the stove
Dust-precipitator, the discharge line of dust-precipitator are connected to chimney, while discharge line is also connected to kiln head cover by circulation air path；It is described
Kiln head cover is also connected to hot air duct of coming out of the stove by bypassing air duct, and the bypass air duct is equipped with bypass air-valve.
It is described enter expansion chamber hot air duct draught area be not less than 11 ㎡；The draught area of the hot air duct of coming out of the stove is not
Less than 8.4 ㎡.
The grate-cooler includes three sections of one section of grate-cooler, two sections of grate-cooler and grate-cooler；One section of the grate-cooler is corresponding
Equipped with multiple one section of wind turbine of grate-cooler, two sections of the grate-cooler is corresponding with three sections of grate-cooler to be equipped with multiple two or three sections of wind of grate-cooler
Machine, the circulation air path connect kiln head cover by two or three sections of wind turbines of grate-cooler.
The AQC boilers carry out back grey blanking by rotary feeder.
The expansion chamber carries out back grey blanking by rotary feeder.
Beneficial effects of the present invention：
The inlet air temperature of AQC stoves can be improved using the method for the present invention, AQC boiler capacitys can be improved, can be improved
Waste heat power generation.
Wind pressure in stove can be improved using the method for the present invention.
The present invention can effectively improve kiln secondary air temperature, improve kiln unit-hour output, increase grate-cooler clinker loading.
Description of the drawings
Fig. 1 is the system diagram of the present invention；
Wherein, 1. chamotte kiln, 2.AQC boilers, 3. grate-coolers, 4. expansion chambers, 5. enter expansion chamber hot air duct, 6. sedimentations
Room, 7. enter stove hot air duct, and 8. come out of the stove hot air duct, and 9. bypass air-valves, 10. rotary feeders, 11. one section of grate-coolers, 12. comb
Two sections of cold, 13. three sections of grate-coolers, 14. kiln hood air-introduced machines, 15.15M wind turbines, 16.16M wind turbines, 17.17M wind turbines, 18.18M
Wind turbine, 19.19M wind turbines, 20.20M wind turbines, 21. circulation air paths, 22. kiln head covers, 23. dust-precipitators, 24 discharge lines.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of daily output 5000t clinker production line afterheat generating systems, including：Chamotte kiln 1 is equipped with kiln hood
Cover 22, kiln head cover 22 is interior to be equipped with grate-cooler 3, and the kiln head cover 22 connects entering for expansion chamber 6 by entering expansion chamber hot air duct 5
Mouthful, the outlet of the expansion chamber 6 connects AQC boilers 2 by entering stove hot air duct 7, and the AQC boilers 2 also pass through hot wind of coming out of the stove
Pipeline 8 connects dust-precipitator 23, and the discharge line 24 of dust-precipitator 23 is connected to chimney, while discharge line 24 also passes through circulation air path
21 are connected to kiln head cover.Kiln hood air-introduced machine 14 is equipped in discharge line 24；The kiln head cover 22 is also connected to by bypassing air duct
It comes out of the stove hot air duct 8, the bypass air duct is equipped with bypass air-valve 9.
The grate-cooler includes three section 13 of one section 11 of grate-cooler, two section 12 of grate-cooler and grate-cooler；One section of the grate-cooler
11 corresponding 10 grate-coolers, one section of wind turbine that are equipped with (are only illustrated, i.e. one before 15M wind turbines in figure with a wind turbine
Wind turbine), two section 12 of the grate-cooler and three section 13 of grate-cooler is corresponding is equipped with multiple two or three sections of wind turbines of grate-cooler, the circulated air
Road 21 connects kiln head cover by two or three sections of wind turbines of grate-cooler.
The AQC boilers carry out back grey blanking by rotary feeder 10.
The expansion chamber 4 carries out back grey blanking by rotary feeder 10.
Two or three sections of wind turbines of grate-cooler include 15M wind turbines 15,16M wind turbines 16,17M wind turbines 17,18M wind turbines 18,19M wind turbines
19,20M wind turbines 20, all using frequency conversion fan.
A kind of optimization method for producing 5000t clinker production line cogenerations daily, including：
(1) optimize hot air duct：Ensure that system without leaking out a little, enters expansion chamber according to waste heat boiler production technology hot air duct
Hot air duct and enter stove hot air duct non-resistance, enter expansion chamber hot air duct and enter stove hot air duct draught area not less than 11
㎡, hot air duct draught area of coming out of the stove are not less than 8.4 ㎡.
Between can effectively improving 30-60 DEG C of AQC stoves inlet air temperature compared with the prior art with the method for the present invention, it can improve
AQC boiler capacity 4-5t/h, can improve cogeneration 800-1000kw/h.
(2) optimization bypass air-valve：Ensure that bypass air valve blades are intact, repaired if any abrasion, gap is true between blade
It protects no more than 0.5mm, reduces inleakage.It is fully closed to zero-bit is scheduled on that air-valve is bypassed under normal production status, it is ensured that grate-cooler is ripe
Material cooling exhaust gas is all recycled by AQC boilers, increases AQC boiler air inlet/outlet wind pressure.
Can effectively reduce system air leakage compared with the prior art with the method for the present invention reduces kiln hood air-introduced machine electric current drop
Low power consumption improves inlet air of boiler amount and improves wind pressure in stove, than wind pressure raising -0.2kpa in prior art stove or so, can improve
Boiler capacity 2t/h can improve waste heat power generation 400kw/h.
(3) AQC boilers, expansion chamber ash returning tube road carry out back grey blanking using rotary feeder, to ensure that lock wind effect is good
It is good, wind pressure in boiler is improved, reduces cold wind incorporation in stove.
(4) grate-cooler wind turbine is adjusted：One section of wind turbine of grate-cooler ensures whole runnings at full capacity, and air door is ensureing not super cooling
In the case of one section of wind turbine rated current of machine all give 100%, one section of ventilation beam of grate-cooler ensure it is unimpeded, to ensure one section of clinker
Cooling effect improves cooling wind temperature, gives AQC boilers higher temperature.Kiln hood air-introduced machine is discharged 80 DEG C of exhaust gas and is managed with diameter 2000mm
Road leads to two or three sections of fan induced draught mouths of grate-cooler and is recycled, and improves grate-cooler wind turbine inlet air temperature, is cooled down with grate-cooler
Air door of fan control cold wind incorporation adjustment wind turbine inlet air temperature is at 60 DEG C.Control two or three sections of frequency conversion fan specified rates of grate-cooler simultaneously
20 DEG C of clinker cooling wind-warm syndrome can be improved adjusting clinker cooling wind-warm syndrome inside grate-cooler and enter boiler.
Can effectively improve kiln secondary air temperature compared with the prior art with the method for the present invention, good stabilization 1070 DEG C-
1150 DEG C, kiln unit-hour output is improved, increases grate-cooler clinker loading, improve grate-cooler exhaust gas wind-warm syndrome and good is followed
Ring kiln secondary air temperature.
(5) pressure is adjusted：
Two or three sections of wind turbines of grate-cooler are according to kiln inventory adjustment such as table：
| Two or three sections of wind turbines of grate-cooler | 15M wind turbines | 16M wind turbines | 17M wind turbines | 18M wind turbines | 19M wind turbines | 20M wind turbines |
| Fan frequency conversion given frequency (Hz) | 40-48 | 35-45 | 25-30 | 25-30 | 20-25 | 15-20 |
According to more than firer skill and grate-cooler control operation, kiln head cover range of negative pressure is controlled in the range of -50pa-100pa,
Control kiln hood id-motor hertz fully recycles grate-cooler clinker cooling hot wind, is drawn with kiln hood to 43-44 hertz of ranges are scheduled on
Fan frequency conversion hertz controls AQC boiler exports negative pressure that can effectively improve inlet air of boiler in the range of -1.45kp to -1.65kpa
Amount, it is also ensured that kiln head cover is without positive pressure material leakage.
It is pressed between 5000-5400pa and run using grate-cooler cylinder stroke number control one section of comb leeward of grate-cooler,
Clinker is allowed to be fully cooled at one section, effectively high-temp waste gas is allowed wind to be taken to recycle in waste heat boiler.
SP stoves and steam turbine under stationary conditions, using inventive method, it can be achieved that between ton clinker generated energy 36-38 degree,
Adjustment matches good 10000kw cogenerations unit and can reach average of the whole year 9200kw.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of optimization method for producing 5000t clinker production line cogenerations daily, it is characterized in that, including：
Optimize hot air duct：Optimize draught area；Ensure hot air duct without leaking out a little, it is ensured that enter expansion chamber hot air duct and enter stove
Hot air duct non-resistance；
Optimization bypass air-valve：Optimize impeller clearance, increase the air inlet/outlet wind pressure of AQC boilers；
Adjust grate-cooler wind turbine：One section of wind turbine whole running at full capacity of grate-cooler, air door are specified in not super one section of wind turbine of grate-cooler
100% is all given under current conditions；Adjustment two or three sections of wind turbines of grate-cooler are mixed with grate-cooler cooling blower airdoor control cold wind
Inlet air temperature is in set temperature；
Adjust pressure：Kiln head cover range of negative pressure is controlled in the range of -50pa-100pa, control one section of comb leeward of grate-cooler is pressed in
Between 5000-5400pa.
2. a kind of optimization method for producing 5000t clinker production line cogenerations daily as described in claim 1, it is characterized in that, optimization
Draught area specifically includes：The draught area for entering expansion chamber hot air duct of grate-cooler to expansion chamber is not less than 11 ㎡；It comes out of the stove heat
The draught area of wind pipeline is not less than 8.4 ㎡.
3. a kind of optimization method for producing 5000t clinker production line cogenerations daily as described in claim 1, it is characterized in that, setting
Bypass air-valve specifically includes：Ensure to bypass air valve blades without abrasion, bypass air valve blades gap is not more than 0.5mm；Normally giving birth to
It is fully closed to zero-bit is scheduled on that air-valve is bypassed during occurrence state, it is ensured that grate-cooler clinker cooling exhaust gas is all recycled by AQC boilers, is increased
AQC boiler air inlet/outlet wind pressure.
4. a kind of optimization method for producing 5000t clinker production line cogenerations daily as described in claim 1, it is characterized in that, adjustment
Grate-cooler wind turbine specifically includes：Kiln hood air-introduced machine 80 DEG C of exhaust gas of discharge lead to two or three sections of fan induced draught mouths of grate-cooler and carry out recycling profit
With raising grate-cooler wind turbine inlet air temperature；
Adjustment two or three sections of wind turbine inlet air temperature of grate-cooler are mixed at 60 DEG C with grate-cooler cooling blower airdoor control cold wind；
The frequency adjusting method of two or three sections of wind turbines of grate-cooler is：15M wind turbines：40-48Hz, 16M wind turbine：35-45Hz, 17M wind turbine：
25-30Hz, 18M wind turbine：25-30Hz, 19M wind turbine：20-25Hz, 20M wind turbine：15-20Hz.
5. a kind of optimization method for producing 5000t clinker production line cogenerations daily as described in claim 1, it is characterized in that, adjustment
Pressure further includes：Kiln hood air inducing unit frequency is born in 43-44Hz by adjusting kiln hood air-introduced machine FREQUENCY CONTROL AQC boiler exports
It is pressed in the range of -1.45kp to -1.65kpa.
6. a kind of daily output 5000t clinker production line afterheat generating systems, it is characterized in that, using optimization side described in claim 1
Method, including：Chamotte kiln is equipped with kiln head cover, is equipped with grate-cooler in kiln head cover, the kiln head cover is by entering expansion chamber hot air duct
The entrance of expansion chamber is connected, the outlet of the expansion chamber connects AQC boilers by entering stove hot air duct, and the AQC boilers are also logical
Hot air duct connection dust-precipitator of coming out of the stove is crossed, the discharge line of dust-precipitator is connected to chimney, while discharge line also passes through circulated air
Road is connected to kiln head cover；The kiln head cover is also connected to hot air duct of coming out of the stove by bypassing air duct, and the bypass air duct is equipped with
Bypass air-valve.
7. electricity generation system as claimed in claim 6, it is characterized in that, it is described enter expansion chamber hot air duct draught area be not less than
11㎡；The draught area of the hot air duct of coming out of the stove is not less than 8.4 ㎡.
8. electricity generation system as claimed in claim 6, it is characterized in that, the grate-cooler includes one section of grate-cooler, two sections of grate-cooler
And three sections of grate-cooler；One section of the grate-cooler is corresponding to be equipped with multiple one section of wind turbine of grate-cooler, two sections of the grate-cooler and cooling
Three sections of machine is corresponding to be equipped with multiple two or three sections of wind turbines of grate-cooler, and the circulation air path connects kiln hood by two or three sections of wind turbines of grate-cooler
Cover.
9. electricity generation system as claimed in claim 6, it is characterized in that, the AQC boilers are carried out back by rotary feeder under ash
Material.
10. electricity generation system as claimed in claim 6, it is characterized in that, the expansion chamber is carried out back by rotary feeder under ash
Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135734.9A CN108180765A (en) | 2018-02-09 | 2018-02-09 | A kind of optimization method and system for producing 5000t clinker production line cogenerations daily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135734.9A CN108180765A (en) | 2018-02-09 | 2018-02-09 | A kind of optimization method and system for producing 5000t clinker production line cogenerations daily |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108180765A true CN108180765A (en) | 2018-06-19 |
Family
ID=62552702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810135734.9A Withdrawn CN108180765A (en) | 2018-02-09 | 2018-02-09 | A kind of optimization method and system for producing 5000t clinker production line cogenerations daily |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108180765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111792859A (en) * | 2020-07-24 | 2020-10-20 | 天津水泥工业设计研究院有限公司 | Cement production system capable of reducing heat loss of surface of kiln cylinder and heat enthalpy loss of residual wind without kiln head |
-
2018
- 2018-02-09 CN CN201810135734.9A patent/CN108180765A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111792859A (en) * | 2020-07-24 | 2020-10-20 | 天津水泥工业设计研究院有限公司 | Cement production system capable of reducing heat loss of surface of kiln cylinder and heat enthalpy loss of residual wind without kiln head |
| CN111792859B (en) * | 2020-07-24 | 2022-04-29 | 天津水泥工业设计研究院有限公司 | Cement production system capable of reducing heat loss of surface of kiln cylinder and heat enthalpy loss of residual wind without kiln head |
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Effective date of registration: 20200819 Address after: 277000 zhangshanzi Town, Taierzhuang District, Zaozhuang City, Shandong Province Applicant after: Shandong Quanxing Cement Co., Ltd Address before: 277417 Zhang Shan Zi Town, Taierzhuang District, Zaozhuang City, Shandong Province Applicant before: Wu Honglei |
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180619 |