CN203333492U - System for producing pulverized coal by virtue of kiln head waste heat of clinker firing system - Google Patents
System for producing pulverized coal by virtue of kiln head waste heat of clinker firing system Download PDFInfo
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- CN203333492U CN203333492U CN2013203947184U CN201320394718U CN203333492U CN 203333492 U CN203333492 U CN 203333492U CN 2013203947184 U CN2013203947184 U CN 2013203947184U CN 201320394718 U CN201320394718 U CN 201320394718U CN 203333492 U CN203333492 U CN 203333492U
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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
Abstract
The utility model discloses a system for producing pulverized coal by virtue of kiln head waste heat of a clinker firing system. The system comprises a cement pulverized coal preparation system and a cement clinker firing system, wherein the discharge hole of one single-pipe screw conveying feeder of the cement pulverized coal preparation system is connected with the feeding hole of the four-channel pulverized coal combustion apparatus of the cement clinker firing system; the discharge hole of the other single-pipe screw conveying feeder of the cement pulverized coal preparation system is connected with the feeding hole of the decomposing furnace of the cement clinker firing system; and the hot air outlet of the air beam grate cooler of the cement clinker firing system is connected with the air inlet of the air-swept coal mill of the cement pulverized coal preparation system. The system for producing pulverized coal by virtue of the kiln head waste heat of the clinker firing system has the advantages of energy conservation and consumption reduction, and cost reduction and efficiency improvement, and also is capable of increasing the burnout degree of the pulverized coal and improving the quality of the clinker.
Description
Technical field:
The utility model relates to a kind of system of utilizing the kiln hood waste heat production coal dust of grog firing system, belongs to the cement clinker production field.
Background technology:
In traditional cement clinker burning system, adopting air swept mill, coal carries out grinding to raw coal, air swept mill, and coal is provided by hotblast stove, coal dust adopts cyclonic separator to be selected powder, Pulverized Coal Bin adopts charge level controller to be measured, and shortcoming is, hotblast stove raw coal consumption is large, the coal dust of the bad control of hot blast temperature causes that air swept mill coal mill is dried and is had certain danger, if misoperation has the danger of blast; Adopt the cyclonic separator grinding efficiency lower, yield rate is lower, not only can not meet the coal dust supply of whole system, and has increased the circulating load rate of coal dust in coal mill system, and power consumption is larger; Because the isolated fineness of pulverized coal of cyclonic separator is thicker, when calcined by rotary kiln, the coal dust burn-out degree is low, and the incomplete combustion of coal dust easily occurs, and has affected the quality of grog in addition; Pulverized Coal Bin adopts the interior bed depth of Pulverized Coal Bin that can only rely on of charge level controller to calculate the amount of material in storehouse; Measuring Precision is not high; demarcate the calibration difficulty larger; when in storehouse, material level blanking or vibrations reason produce the height inclined-plane; controller can only calculate material level by logical formula according to the one side be in contact with it; metering demonstration amount often can with actual amount deviation to some extent, and maintaining difficulty comparatively, life cycle is short.
The utility model content:
The purpose of this utility model is to provide a kind of energy-saving and cost-reducing, cost efficiency, improved the burn-out degree of coal dust, improve the system that the kiln hood waste heat that utilizes the grog firing system of clinker quality is produced coal dust.
The utility model is implemented by following technical scheme: utilize the system of the kiln hood waste heat production coal dust of grog firing system, it comprises cement coal dust preparation system and cement clinker burning system; Wherein, a single tube spiral of described cement coal dust preparation system carries the discharge port of feeding machine to be connected with the four-way coal powder burner opening for feed of described cement clinker burning system, another single tube spiral of described cement coal dust preparation system carries the discharge port of feeding machine to be connected with the decomposing furnace opening for feed of described cement clinker burning system, and the hot-blast outlet of the cold machine of air beam grate type of described cement clinker burning system is swept coal mill blast inlet with the wind of described cement coal dust preparation system and is connected.
Described cement coal dust preparation system comprises that crusher, rotary conveyor, chapelet, run coal bin, disk feeder, described wind are swept coal mill, dynamic coal milling powder-selecting machine, two described Pulverized Coal Bin, coals mill bag filter, coal dust ventilator, load sensor, two described single tube spirals are carried feeding machine, solid flowmeter, spiral Pneumatic conveying pump and Root's blowers; The discharge end of described crusher is connected by described rotary conveyor with the feed end of described chapelet; The discharge end of described chapelet is connected with described run coal bin opening for feed; Described run coal bin discharge port is connected with the opening for feed of described disk feeder; The discharge port of described disk feeder is connected with the opening for feed that the discharge port of described dynamic coal milling powder-selecting machine and described wind are swept the coal mill; The discharge port that described wind is swept the coal mill is connected with the blast inlet of described dynamic coal milling powder-selecting machine; The air outlet of described dynamic coal milling powder-selecting machine is communicated with the opening for feed of two described Pulverized Coal Bin and the inlet mouth of described coal mill bag filter respectively; The air outlet of described coal mill bag filter is connected with described coal dust ventilator; The ash bucket of described coal mill bag filter is communicated with the opening for feed of two described Pulverized Coal Bin; Be equipped with described load sensor on each described Pulverized Coal Bin; The corresponding connection of opening for feed that the discharge port of each described Pulverized Coal Bin is carried feeding machine with a described single tube spiral; Each described single tube spiral is carried the corresponding connection of opening for feed of discharge port with a described spiral Pneumatic conveying pump of feeding machine; Carry at the described single tube spiral of correspondence between the opening for feed of the discharge port of feeding machine and described spiral Pneumatic conveying pump and be provided with described solid flowmeter; The blast inlet of each described spiral Pneumatic conveying pump and a corresponding connection of described Root's blower.
Described cement clinker burning system comprises preheater, conditioning tower, described decomposing furnace, rotary kiln, described four-way coal powder burner, the cold machine of described air beam grate type, kiln hood dust precipitator, kiln tail bag filter, centrifugal fan, kiln tail high-temperature blower, worm conveyor, described preheater opening for feed is connected with the homogenizing storehouse discharge port, described preheater air outlet is connected with described conditioning tower blast inlet, and described preheater discharge port is connected with described rotary kiln opening for feed; Described conditioning tower air outlet is connected with described kiln tail bag filter blast inlet; Be provided with centrifugal fan between described conditioning tower air outlet and described kiln tail bag filter blast inlet; Described kiln tail bag filter air outlet is connected with described kiln tail high-temperature blower; Be provided with described decomposing furnace between described preheater and described rotary kiln; Be provided with described four-way coal powder burner in described rotary kiln; The kiln hood of described rotary kiln is communicated with by heating duct with described decomposing furnace; Described rotary kiln discharge port is provided with the cold machine of described air beam grate type; Be provided with described kiln hood dust precipitator on the air outlet of the cold machine of described air beam grate type; The discharge port of described conditioning tower and described kiln tail bag filter is connected with described helical feed machine inlet capable, and described worm conveyor discharge port is connected with described homogenizing storehouse opening for feed.
Advantage of the present utility model: adopt grate-cooler waste heat hot blast to carry out that the coal coal dust is dried to air swept mill, dry hot blast and can be stabilized in 300 ℃ of left and right, save the raw coal that hotblast stove consumes, effectively utilized again the waste heat of grate cooler, played effect energy-saving and cost-reducing, cost efficiency; Use after dynamic powder concentrator the platform that has not only improved coal mill system to produce, guaranteed the pulverized coal consumption of whole system, the circulating load rate of material in the coal mill that reduced that air swept mill, thus reduced the power consumption of system; And can better control the fineness of coal dust, and improved the burn-out degree of coal dust, reached the abundant burning of coal dust, calcining temperature improves, and has improved the quality of grog; Pulverized Coal Bin adopts the load sensor metering, accurate measurement, and maintaining is simple, and life cycle improves greatly, makes the coal dust of whole system control more accurate; Newly-increased one and the equal standby Pulverized Coal Bin of original capacity; when coal mill or dynamic powder concentrator break down while needing to shut down, original Pulverized Coal Bin coal dust exhausts, and so newly-increased Pulverized Coal Bin can continue as follow-up system provides coal dust; for maintenance is raced against time, and follow-up equipment does not need to shut down.
The accompanying drawing explanation:
Fig. 1 is system connection diagram of the present utility model.
The system connection diagram that Fig. 2 is the cement coal dust preparation system.
The system connection diagram that Fig. 3 is cement clinker burning system.
Cement coal dust preparation system 1, cement clinker burning system 2, crusher 3, rotary conveyor 4, chapelet 5, run coal bin 6, disk feeder 7, wind is swept coal mill 8, heating duct is communicated with 9, dynamic coal milling powder-selecting machine 10, Pulverized Coal Bin 11, coal mill bag filter 12, coal dust ventilator 13, load sensor 14, single tube spiral is carried feeding machine 15, solid flowmeter 16, spiral Pneumatic conveying pump 17, Root's blower 18, preheater 19, conditioning tower 20, decomposing furnace 21, rotary kiln 22, four-way coal powder burner 23, the cold machine 24 of air beam grate type, kiln hood dust precipitator 25, kiln tail bag filter 26, centrifugal fan 27, kiln tail high-temperature blower 28, worm conveyor 29, homogenizing storehouse 30.
Embodiment: as shown in Figure 1 to Figure 3, utilize the system of the kiln hood waste heat production coal dust of grog firing system, it comprises cement coal dust preparation system 1 and cement clinker burning system 2; Cement coal dust preparation system 1 comprises that crusher 3, rotary conveyor 4, chapelet 5, run coal bin 6, disk feeder 7, wind are swept coal mill 8, dynamic coal milling powder-selecting machine 10, two Pulverized Coal Bin 11, coal mill bag filter 12, coal dust ventilator 13, load sensor 14, two single tube spirals are carried feeding machine 15, solid flowmeter 16, spiral Pneumatic conveying pump 17 and Root's blower 18; The discharge end of crusher 3 is connected by rotary conveyor 4 with the feed end of chapelet 5; The discharge end of chapelet 5 is connected with run coal bin 6 opening for feeds; Run coal bin 6 discharge ports are connected with the opening for feed of disk feeder 7; The discharge port of the discharge port of disk feeder 7 and dynamic coal milling powder-selecting machine 10 is connected with the opening for feed that wind is swept coal mill 8; The discharge port that wind is swept coal mill 8 is connected with the blast inlet of dynamic coal milling powder-selecting machine 10; The air outlet of dynamic coal milling powder-selecting machine 10 is communicated with the opening for feed of two Pulverized Coal Bin 11 and the inlet mouth of coal mill bag filter 12 respectively; The air outlet of coal mill bag filter 12 is connected with coal dust ventilator 13; The ash bucket of coal mill bag filter 12 is communicated with the opening for feed of two Pulverized Coal Bin 11; Be equipped with load sensor 14 on each Pulverized Coal Bin 11; The corresponding connection of opening for feed that the discharge port of each Pulverized Coal Bin 11 is carried feeding machine 15 with a single tube spiral; Each single tube spiral is carried the corresponding connection of opening for feed of discharge port with a spiral Pneumatic conveying pump 17 of feeding machine 15; Carry at corresponding single tube spiral between the opening for feed of the discharge port of feeding machine 15 and spiral Pneumatic conveying pump 17 and be provided with solid flowmeter 16; The blast inlet of each spiral Pneumatic conveying pump 17 and a corresponding connection of Root's blower 18; Cement clinker burning system 2 comprises preheater 19, conditioning tower 20, decomposing furnace 21, rotary kiln 22, four-way coal powder burner 23, the cold machine 24 of air beam grate type, kiln hood dust precipitator 25, kiln tail bag filter 26, centrifugal fan 27, kiln tail high-temperature blower 28 and worm conveyor 29; Preheater 19 opening for feeds are connected with homogenizing storehouse 30 discharge ports, and preheater 19 air outlets are connected with conditioning tower 20 blast inlets, and preheater 19 discharge ports are connected with rotary kiln 22 opening for feeds; Conditioning tower 20 air outlets are connected with kiln tail bag filter 26 blast inlets; Be provided with centrifugal fan 27 between conditioning tower 20 air outlets and kiln tail bag filter 26 blast inlets; Kiln tail bag filter 26 air outlets are connected with kiln tail high-temperature blower 28; Be provided with decomposing furnace 21 between preheater 19 and rotary kiln 22; Be provided with four-way coal powder burner 23 in rotary kiln 22; The kiln hood of rotary kiln 22 is communicated with 9 with decomposing furnace 21 by heating duct; Rotary kiln 22 discharge ports are provided with the cold machine 24 of air beam grate type; Be provided with kiln hood dust precipitator 25 on the air outlet of the cold machine 24 of air beam grate type; The discharge port of conditioning tower 20 and kiln tail bag filter 26 is connected with worm conveyor 29 opening for feeds, and worm conveyor 29 discharge ports are connected with homogenizing storehouse 30 opening for feeds; Wherein, a single tube spiral carries the discharge port of feeding machine 15 to be connected with four-way coal powder burner 23 opening for feeds; Another single tube spiral carries the discharge port of feeding machine 15 to be connected with decomposing furnace 21 opening for feeds; The hot-blast outlet of the cold machine 24 of air beam grate type and wind are swept coal and are ground 8 blast inlets and be connected.
Claims (3)
1. utilize the system of the kiln hood waste heat production coal dust of grog firing system, it is characterized in that, it comprises cement coal dust preparation system and cement clinker burning system; Wherein, a single tube spiral of described cement coal dust preparation system carries the discharge port of feeding machine to be connected with the four-way coal powder burner opening for feed of described cement clinker burning system, another single tube spiral of described cement coal dust preparation system carries the discharge port of feeding machine to be connected with the decomposing furnace opening for feed of described cement clinker burning system, and the hot-blast outlet of the cold machine of air beam grate type of described cement clinker burning system is swept coal mill blast inlet with the wind of described cement coal dust preparation system and is connected.
2. the system that a kind of kiln hood waste heat that utilizes the grog firing system according to claim 1 is produced coal dust, it is characterized in that, described cement coal dust preparation system comprises that crusher, rotary conveyor, chapelet, run coal bin, disk feeder, described wind are swept coal mill, dynamic coal milling powder-selecting machine, two described Pulverized Coal Bin, coals mill bag filter, coal dust ventilator, load sensor, two described single tube spirals are carried feeding machine, solid flowmeter, spiral Pneumatic conveying pump and Root's blowers; The discharge end of described crusher is connected by described rotary conveyor with the feed end of described chapelet; The discharge end of described chapelet is connected with described run coal bin opening for feed; Described run coal bin discharge port is connected with the opening for feed of described disk feeder; The discharge port of described disk feeder is connected with the opening for feed that the discharge port of described dynamic coal milling powder-selecting machine and described wind are swept the coal mill; The discharge port that described wind is swept the coal mill is connected with the blast inlet of described dynamic coal milling powder-selecting machine; The air outlet of described dynamic coal milling powder-selecting machine is communicated with the opening for feed of two described Pulverized Coal Bin and the inlet mouth of described coal mill bag filter respectively; The air outlet of described coal mill bag filter is connected with described coal dust ventilator; The ash bucket of described coal mill bag filter is communicated with the opening for feed of two described Pulverized Coal Bin; Be equipped with described load sensor on each described Pulverized Coal Bin; The corresponding connection of opening for feed that the discharge port of each described Pulverized Coal Bin is carried feeding machine with a described single tube spiral; Each described single tube spiral is carried the corresponding connection of opening for feed of discharge port with a described spiral Pneumatic conveying pump of feeding machine; Carry at the described single tube spiral of correspondence between the opening for feed of the discharge port of feeding machine and described spiral Pneumatic conveying pump and be provided with described solid flowmeter; The blast inlet of each described spiral Pneumatic conveying pump and a corresponding connection of described Root's blower.
3. the system that a kind of kiln hood waste heat that utilizes the grog firing system according to claim 1 is produced coal dust, it is characterized in that, described cement clinker burning system comprises preheater, conditioning tower, described decomposing furnace, rotary kiln, described four-way coal powder burner, the cold machine of described air beam grate type, the kiln hood dust precipitator, kiln tail bag filter, centrifugal fan, kiln tail high-temperature blower, worm conveyor, described preheater opening for feed is connected with the homogenizing storehouse discharge port, described preheater air outlet is connected with described conditioning tower blast inlet, described preheater discharge port is connected with described rotary kiln opening for feed, described conditioning tower air outlet is connected with described kiln tail bag filter blast inlet, be provided with centrifugal fan between described conditioning tower air outlet and described kiln tail bag filter blast inlet, described kiln tail bag filter air outlet is connected with described kiln tail high-temperature blower, be provided with described decomposing furnace between described preheater and described rotary kiln, be provided with described four-way coal powder burner in described rotary kiln, the kiln hood of described rotary kiln is communicated with by heating duct with described decomposing furnace, described rotary kiln discharge port is provided with the cold machine of described air beam grate type, be provided with described kiln hood dust precipitator on the air outlet of the cold machine of described air beam grate type, the discharge port of described conditioning tower and described kiln tail bag filter is connected with described helical feed machine inlet capable, and described worm conveyor discharge port is connected with described homogenizing storehouse opening for feed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203947184U CN203333492U (en) | 2013-06-27 | 2013-06-27 | System for producing pulverized coal by virtue of kiln head waste heat of clinker firing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203947184U CN203333492U (en) | 2013-06-27 | 2013-06-27 | System for producing pulverized coal by virtue of kiln head waste heat of clinker firing system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326688A (en) * | 2014-09-28 | 2015-02-04 | 海拉尔蒙西水泥有限公司 | System and method for calcining cement clinker through lignite safely in large amount |
| CN105864811A (en) * | 2016-04-07 | 2016-08-17 | 山东中科洁能科技有限公司 | Pulverized coal milling device and method |
| CN108889399A (en) * | 2018-09-26 | 2018-11-27 | 天津水泥工业设计研究院有限公司 | Improve the airswept ball mill coal dust preparation system and remodeling method of yield |
| CN110053887A (en) * | 2019-05-07 | 2019-07-26 | 上海三融环保工程有限公司 | A kind of cement plant powder denitrfying agent conveying device and its application method |
-
2013
- 2013-06-27 CN CN2013203947184U patent/CN203333492U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326688A (en) * | 2014-09-28 | 2015-02-04 | 海拉尔蒙西水泥有限公司 | System and method for calcining cement clinker through lignite safely in large amount |
| CN104326688B (en) * | 2014-09-28 | 2016-08-24 | 海拉尔蒙西水泥有限公司 | A kind of a large amount of, system and method for safe utilization brown coal calcination of cement clinker |
| CN105864811A (en) * | 2016-04-07 | 2016-08-17 | 山东中科洁能科技有限公司 | Pulverized coal milling device and method |
| CN105864811B (en) * | 2016-04-07 | 2017-05-03 | 山东中科洁能科技有限公司 | Pulverized coal milling device and method |
| CN108889399A (en) * | 2018-09-26 | 2018-11-27 | 天津水泥工业设计研究院有限公司 | Improve the airswept ball mill coal dust preparation system and remodeling method of yield |
| CN110053887A (en) * | 2019-05-07 | 2019-07-26 | 上海三融环保工程有限公司 | A kind of cement plant powder denitrfying agent conveying device and its application method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20150627 |
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| EXPY | Termination of patent right or utility model |