CN203657520U - Novel remaining air utilization system of cement clinker production line - Google Patents
Novel remaining air utilization system of cement clinker production line Download PDFInfo
- Publication number
- CN203657520U CN203657520U CN201420016951.3U CN201420016951U CN203657520U CN 203657520 U CN203657520 U CN 203657520U CN 201420016951 U CN201420016951 U CN 201420016951U CN 203657520 U CN203657520 U CN 203657520U
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- Prior art keywords
- grate
- air
- expansion chamber
- coal mill
- cooler
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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
Abstract
Provided is a novel remaining air utilization system of a cement clinker production line. A machine head of a grate cooler is communicated with the tail portion of a rotary kiln, a machine tail of the grate cooler is connected with an electric dust collector through an electric dust collecting air pipe, a first grate section and a second grate section are continuously arranged in the grate cooler, a wind blocking wall is arranged between the first grate section and the second grate section, an air channel is arranged between the wind blocking wall and a grate of the grate cooler, two sides of the wind blocking wall are respectively provided with a settling chamber I and a settling chamber II, an air outlet I of the settling chamber I is connected with an AQC boiler through an AQC furnace air pipe, and a coal mill is respectively connected with an air outlet II of the settling chamber I and an air outlet of the settling chamber II through coal mill drying air pipes. The novel remaining air utilization system improves the inlet temperature of a waste heat generation AQC furnace, and the coal mill adopts a medium-low temperature air and large-air-volume operation method, so that the pulverized coal quality is ensured, the inlet temperature of the AQC furnace is also improved, and danger coefficients brought by high-temperature air adopted by an existing coal mill are decreased.
Description
art field
The utility model relates to a kind of cement clinker production line, specifically the bootstrap system of cement clinker production line.
Background technology
After abundant safe cement company cogeneration in 2009 is gone into operation, in ature of coal (Shaanxi bituminous coal) with enter to grind variations in temperature and go out coal-grinding powder moisture little in the situation that and rise to 4.0% by original 1.5%, cause into kiln secondary air temperature and decline, the yellow piece of grog increases, AQC boiler inlet temperature is 350 DEG C of left and right only, and ton grog generated energy also only has 32KWh.Regulate because be forced to out cold wind valve when coal mill inlet temperature is high sometimes, for making full use of low warm air in two sections, so connect a pipe, centre valve control in June, 2010 between kiln hood dust-collection air pipe and coal mill warm-air pipe.This airduct wind-warm syndrome is 100 DEG C of left and right, from then on coal is grinding into a mouthful cold blast sliding valve and did not substantially open, taking raw coal mill warm-air pipe as main, newly adding warm-air pipe I is the auxiliary coal mill inlet temperature that regulates, because this airduct has siphoned away two sections of low warm airs of part, enter boiler hot air temperature and improve 30 DEG C of left and right, ton grog generated energy improves 2 degree left and right, but because wind-warm syndrome is too low, valve opening control is always less, in airduct, dust stratification is serious, therefore consider pipeline to move forward.Meanwhile, be to improve clinker burning temperature, only mill quality of pc and make an effort from improving, that reduces coal dust moisture exactly.Coal-grinding powder moisture and only have coal mill inlet temperature is increased to 350 DEG C by original 250 DEG C for reducing, go out coal-grinding powder moisture and can only be reduced to 3.0% left and right, but bistrique is because temperature height often catches fire, cause great potential safety hazard, therefore have to be reduced to 300 DEG C of left and right by entering to grind temperature, go out coal-grinding powder moisture and rise to again 3.5% left and right, still larger to the adverse effect of kiln calcining.
Utility model content
The novel waste heat that the technical problems to be solved in the utility model is to provide cement clinker production line utilizes system, the hot blast of the mill source using low warm air in two sections of grate front ends of grate-cooler as coal, being used as hot blast by the middle warm air of one section of grate rear end compensates, coal mill before replacing is originated as main hot blast by warm air in a section and is regulated the method into mill temperature with cold wind, improve cogeneration AQC boiler inlet temperature, low warm air during coal mill adopts, the method of operating of Wind Volume, both ensured to grind quality of pc, improve again AQC boiler inlet temperature, and reduce the danger coefficient that former coal mill adopts high warm air to bring.
The utility model is that the technical scheme that the deficiency that solves the problems of the technologies described above adopts is: the novel lingering remnants of past customs of cement clinker production line is utilized system, the head of grate-cooler is communicated with rotary kiln, its tail is connected with cottrell by electric dust-collection air pipe, in grate-cooler, be provided with continuously one section of grate and two sections of grates, between one section of grate and two sections of grates, be provided with windbreak, between windbreak and the grate of grate-cooler, be provided with air channel, be respectively equipped with expansion chamber I and expansion chamber II in the both sides of windbreak, the gas outlet I of expansion chamber I is connected with AQC boiler by AQC stove airduct, coal mill is ground and is dried the gas outlet that airduct connects respectively gas outlet II and the expansion chamber II of expansion chamber I by coal.
The II place, gas outlet of expansion chamber I described in the utility model is provided with valve I.
The gas outlet place of expansion chamber II described in the utility model is provided with valve II).
The utility model beneficial effect is:
1, adopt two expansion chambers, make coal mill use low warm air in two sections as far as possible, during coal mill adopts, low wind-warm syndrome, Wind Volume operation, both ensured out mill quality of pc, guarantees again coal mill safety.
2, give waste heat boiler by warm air in a section as far as possible, improve waste heat boiler inlet temperature.
3, in grate-cooler, the hot blast of each temperature section is redistributed, and makes hot blast Ge Zouqi road, and one section of high warm air is as two tertiary airs; In one section, warm air is mainly entered AQC boiler, secondly regulates hot blast as coal mill; In two sections, low warm air is ground main wind regime as coal, reduces it and influences each other, and grate-cooler grog heat content is given full play of as far as possible.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Mark in figure: 1, grate-cooler, 101, one section of grate, 102, two sections of grates, 103, windbreak, 104, air channel, 2, rotary kiln, 3, electric dust-collection air pipe, 4, cottrell, 5, expansion chamber I, 501, gas outlet I, 502, gas outlet II, 503, valve I, 6, expansion chamber II, 601, gas outlet, 602, valve II, 7, AQC boiler, 701, AQC stove airduct, 8, coal mill, 801, coal mill dries airduct, 9, disintegrating machine.
Detailed description of the invention
As shown in the figure, the novel lingering remnants of past customs of cement clinker production line is utilized system, the head of grate-cooler 1 is communicated with rotary kiln 2, its tail is connected with cottrell 4 by electric dust-collection air pipe 3, interior one section of grate 101 and the two sections of grates 102 of being provided with continuously of grate-cooler 1, it is characterized in that: between one section of grate 101 and two sections of grates 102, be provided with windbreak 103, between the grate of windbreak 103 and grate-cooler 1, be provided with air channel 104, be respectively equipped with expansion chamber I 5 and expansion chamber II 6 in the both sides of windbreak 103, the gas outlet I 501 of expansion chamber I 5 is connected with AQC boiler 7 by AQC stove airduct 701, coal mill 8 is ground and is dried the gas outlet 601 that airduct 801 connects respectively gas outlet II 502 and the expansion chamber II 6 of expansion chamber I 5 by coal.
Gas outlet II 502 places of described expansion chamber I 5 are provided with valve I 503.601 places, gas outlet of described expansion chamber II 6 are provided with valve II 602.Two valves can be according to the amount of controlling out hot blast.
Draw coal mill in the expansion chamber I from two sections of grate front portions and dry the airduct temperature of the new coal mill of raising warm-air pipe relatively, simultaneously, utilize expansion chamber II to improve coal mill intake air temperature, can make coal mill make full use of the middle warm air amount that in two sections, low warm air is used to reduce coal mill, the amount that in having reduced again two sections, low warm air enters boiler, has improved boiler inlet temperature.When after start, coal mill inlet temperature is controlled at 250 DEG C of left and right, coal dust moisture is reduced to 2.5%, effectively improve clinker burning temperature, then entered boiler temperature and also improved 60 DEG C of left and right, basicly stable 440 DEG C of left and right, ton grog generated energy reaches 36 degree, has reached expection object.
After transformation, ton grog generated energy is brought up to 2012 36.34 degree by 34.25 degree, and effect is very obvious.
Claims (3)
1. the novel lingering remnants of past customs of cement clinker production line is utilized system, the head of grate-cooler (1) is communicated with rotary kiln (2), its tail is connected with cottrell (4) by electric dust-collection air pipe (3), in grate-cooler (1), be provided with continuously one section of grate (101) and two sections of grates (102), it is characterized in that: between one section of grate (101) and two sections of grates (102), be provided with windbreak (103), between the grate of windbreak (103) and grate-cooler (1), be provided with air channel (104), be respectively equipped with expansion chamber I (5) and expansion chamber II (6) in the both sides of windbreak (103), the gas outlet I (501) of expansion chamber I (5) is connected with AQC boiler (7) by AQC stove airduct (701), coal mill (8) is ground and is dried the gas outlet (601) that airduct (801) connects respectively gas outlet II (502) and the expansion chamber II (6) of expansion chamber I (5) by coal.
2. the novel lingering remnants of past customs of cement clinker production line as claimed in claim 1 is utilized system, it is characterized in that: the gas outlet II (502) of described expansion chamber I (5) locates to be provided with valve I (503).
3. the novel lingering remnants of past customs of cement clinker production line as claimed in claim 1 is utilized system, it is characterized in that: valve II (602) is located to be provided with in the gas outlet (601) of described expansion chamber II (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016951.3U CN203657520U (en) | 2014-01-13 | 2014-01-13 | Novel remaining air utilization system of cement clinker production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016951.3U CN203657520U (en) | 2014-01-13 | 2014-01-13 | Novel remaining air utilization system of cement clinker production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657520U true CN203657520U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420016951.3U Expired - Fee Related CN203657520U (en) | 2014-01-13 | 2014-01-13 | Novel remaining air utilization system of cement clinker production line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949534A (en) * | 2015-06-09 | 2015-09-30 | 华润水泥技术研发有限公司 | Cement kiln head waste heat power generation method and system |
| CN108253803A (en) * | 2017-12-06 | 2018-07-06 | 山东棱角建材科技有限公司 | A kind of device and technique for improving grate-cooler heat energy utilization |
| CN114993060A (en) * | 2022-05-27 | 2022-09-02 | 中国中材国际工程股份有限公司 | Kiln head waste heat energy-saving utilization and safe production system |
-
2014
- 2014-01-13 CN CN201420016951.3U patent/CN203657520U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949534A (en) * | 2015-06-09 | 2015-09-30 | 华润水泥技术研发有限公司 | Cement kiln head waste heat power generation method and system |
| CN104949534B (en) * | 2015-06-09 | 2017-02-01 | 华润水泥技术研发有限公司 | Cement kiln head waste heat power generation method and system |
| CN108253803A (en) * | 2017-12-06 | 2018-07-06 | 山东棱角建材科技有限公司 | A kind of device and technique for improving grate-cooler heat energy utilization |
| CN114993060A (en) * | 2022-05-27 | 2022-09-02 | 中国中材国际工程股份有限公司 | Kiln head waste heat energy-saving utilization and safe production system |
| CN114993060B (en) * | 2022-05-27 | 2024-01-19 | 中国中材国际工程股份有限公司 | Kiln head waste heat energy-saving utilization and safety production system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140618 Termination date: 20170113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |