CN102494348A - Energy-saving pulverized coal grinding and delivering equipment for boilers and kilns - Google Patents
Energy-saving pulverized coal grinding and delivering equipment for boilers and kilns Download PDFInfo
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- CN102494348A CN102494348A CN2011103732741A CN201110373274A CN102494348A CN 102494348 A CN102494348 A CN 102494348A CN 2011103732741 A CN2011103732741 A CN 2011103732741A CN 201110373274 A CN201110373274 A CN 201110373274A CN 102494348 A CN102494348 A CN 102494348A
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- 239000003245 coal Substances 0.000 title claims abstract description 168
- 238000000227 grinding Methods 0.000 title claims abstract description 113
- 238000005192 partition Methods 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims description 42
- 238000000926 separation method Methods 0.000 claims description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 20
- 238000002485 combustion reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 239000003034 coal gas Substances 0.000 description 7
- 239000002817 coal dust Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 3
- 229910000617 Mangalloy Inorganic materials 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 241000251131 Sphyrna Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Combined Means For Separation Of Solids (AREA)
Abstract
An environment-saving pulverized coal grinding and delivering equipment for boilers and kilns comprises a housing and a driving shaft, wherein the housing is mounted on a framework, and the driving shaft runs through the housing and is disposed on the framework. Besides, a driving wheel is arranged on the driving shaft, a feed hopper is arranged on the housing, and a primary grinding hammer, a secondary grinding hammer, a tertiary grinding hammer and an air delivery device are sequentially arranged on the driving shaft in the housing, a partition plate is arranged between the tertiary grinding hammer and the air delivery device, and a pulverized coal regrinding groove is arranged between the partition plate and the tertiary grinding hammer. The housing is further provided with a pulverized coal separating chamber with a coarse pulverized coal return pipe, and a coarse pulverized coal inlet is arranged between the coarse pulverized coal return pipe and the primary grinding hammer. The energy-saving pulverized coal grinding and delivering equipment for the boilers and the kilns has the advantages that heat loss due to insufficient burning of coal of the boilers and kilns is eliminated basically and emission of various pollutants is reduced greatly.
Description
Technical Field
The invention relates to pulverized coal grinding and conveying equipment.
Background
In the equipment for processing the fuel of a boiler and a kiln, the traditional fan coal mill has the structure that: the coal pulverizer is characterized in that only one group of impellers and impact plates are arranged in a volute-shaped armor at the lower part of the coarse powder separator, after raw coal is counted into the fan coal pulverizer, a motor drives the impellers rotating at a high speed to collide with the impact plates, the coal is pulverized, air pressure generated by the impellers enters the furnace through a coal powder airflow outlet, the impellers have the coal pulverizing function and the air pressure generating function, so that the abrasion is serious, the service life is short, and the coal pulverizing efficiency is low and the coal powder quality is difficult to control.
Chinese patent ZL 200710109885.9 discloses a centrifugal composite coal-grinding powder-spraying machine, which is provided with three groups of flyweight bodies with different diameters for grinding coal briquettes, but the pulverized coal which is not yet up to the standard after being ground by three-stage flyweight bodies in the grinding process cannot be further processed, so that the problem of insufficient combustion of the ground pulverized coal still exists, and the use efficiency of the pulverized coal is reduced.
Disclosure of Invention
The present invention provides an energy-saving pulverized coal grinding and conveying device for boilers and kilns, which can reduce or avoid the aforementioned problems.
In order to solve the problems, the invention provides an energy-saving pulverized coal grinding and conveying device for boilers and kilns, which comprises a casing arranged on a frame, and a driving shaft penetrating through the casing and arranged on the frame, wherein a driving wheel is arranged on the driving shaft, a feed hopper is arranged on the casing, a first-stage grinding hammer, a second-stage grinding hammer, a third-stage grinding hammer and a gas conveying device are sequentially arranged on the driving shaft in the casing, a partition plate is arranged between the third-stage grinding hammer and the gas conveying device, a pulverized coal back-grinding groove is arranged between the partition plate and the third-stage grinding hammer, the casing is further provided with a pulverized coal separation chamber, the pulverized coal separation chamber is connected with the gas conveying device through an arc-shaped separation chamber channel, a separation partition plate is arranged at an outlet of the separation chamber channel, and a coarse pulverized coal return pipe is arranged between the pulverized coal separation chamber and the first-stage grinding hammer, a coarse coal powder inlet is arranged between the coarse coal powder return pipe and the first-stage grinding hammer, the coal powder sorting chamber comprises a coal powder outlet, and the coal powder outlet is connected with a coal powder control device.
Preferably, one side of the coarse coal powder return pipe, which is close to the coal powder sorting chamber, is provided with an adjusting plate and an adjusting screw connected with the adjusting plate.
Preferably, the first-stage grinding hammer comprises a first hammer body fixedly connected to the driving shaft and a rectangular hammer head fixedly connected to the outer side of the first hammer body; the second-stage grinding hammer comprises a second hammer body fixedly connected to the driving shaft, a hammer head support frame fixedly connected to the outer side of the second hammer body, and a cylindrical quadrangular hammer head rotatably connected with the hammer head support frame; the third-stage grinding hammer comprises a third hammer body fixedly connected to the driving shaft, a hammer head base fixedly connected to the outer side of the third hammer body, a hammer head support rotatably connected to the hammer head base, and a cylindrical quadrangular hammer head rotatably connected to the hammer head support.
Preferably, the feed hopper is provided with an iron removal device.
Preferably, the feed hopper is provided with a coal supply control device.
Preferably, the casing is provided with an air inlet control device at one side close to the feed hopper.
The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns provided by the invention grinds coal briquettes by three groups of grinding hammers rotating at high speed, and then grinds the coal briquettes back by primary grinding and primary sorting back grinding, so that the raw coal is ground, pressed, impacted and manufactured into a four-in-one body in three-stage grinding. Raw coal can be ground into combustible mixed coal powder meeting the use requirements of various working conditions, and the coal powder is almost suitable for all coal types including bituminous coal, anthracite, lignite and the like. The produced fine coal powder can be fully and cleanly combusted, no black smoke is discharged, the heat loss caused by incomplete combustion of coal in a boiler and a kiln is basically eliminated, and the discharge of various pollutants is greatly reduced. Therefore, the utilization efficiency of the raw coal is greatly improved, and the cost of the raw coal is saved.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
fig. 1 is a schematic structural diagram of an energy-saving pulverized coal grinding and conveying device for a boiler and a kiln according to an embodiment of the invention;
FIG. 2 is a partial schematic structural diagram of a first stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in FIG. 1;
FIG. 3 is a partial schematic structural diagram of a second stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in FIG. 1;
fig. 4 is a partial structural schematic diagram of a third-stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in fig. 1.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
The structure and the principle of an energy-saving pulverized coal grinding and conveying device for boilers and kilns according to the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an energy-saving pulverized coal grinding and conveying device for boilers and kilns according to an embodiment of the invention. As shown in fig. 1, the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns provided by the present invention comprises a casing 2 mounted on a frame 1, a driving shaft 3 penetrating through the casing 2 and arranged on the frame 1, a driving wheel 4 arranged on the driving shaft 3, a feeding hopper 5 arranged on the casing 2, a first stage grinding hammer 6, a second stage grinding hammer 7, a third stage grinding hammer 8 and a gas transmission device 9 arranged in sequence on the driving shaft 3 in the casing 2, a partition plate 10 arranged between the third stage grinding hammer 8 and the gas transmission device 9, a pulverized coal return grinding groove 11 arranged between the partition plate 10 and the third stage grinding hammer 8, a pulverized coal sorting chamber 12 further arranged on the casing 2, the pulverized coal sorting chamber 12 connected with the gas transmission device 9 through an arc-shaped sorting chamber channel 121, a separating partition plate 122 arranged at an outlet of the sorting chamber channel 121, a coarse coal powder return pipe 13 is arranged between the coal powder sorting chamber 12 and the first-stage grinding hammer 6, a coarse coal powder inlet 131 is arranged between the coarse coal powder return pipe 13 and the first-stage grinding hammer 6, the coal powder sorting chamber 12 comprises a coal powder outlet 123, and the coal powder outlet 123 is connected with a coal powder control device 14.
The driving wheel 4 rotates the driving shaft 3, and thus the first stage grinding hammer 6, the second stage grinding hammer 7, the third stage grinding hammer 8, and the gas transmission device 9 are rotated at a high speed. The power of the flowing of the pulverized coal is driven by the negative pressure generated by the operation of the gas transmission device 9 rotating at a high speed, and the gas transmission device 9 can be a fan.
After raw coal is crushed into crushed coal blocks with the diameter less than 2 cm, the crushed coal blocks are conveyed into the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns through the feed hopper 5, and are subjected to primary grinding by the primary grinding hammer 6 to form pulverized coal; then further secondary grinding is performed by the secondary grinding hammer 7; and further ground into finer coal powder by the third stage grinding hammer 8. The diameter of the hollow through hole of the partition plate 10 is 1.5-3 times of that of the drive shaft 3, and a partition plate channel 101 is formed between the hollow through hole of the partition plate and the drive shaft 3. The partition plate 10 primarily sorts the pulverized coal, pulverized coal particles ground by the third stage grinding hammer 8 are under the action of centrifugal force, wherein thicker pulverized coal particles possibly existing in the pulverized coal particles are blocked back to the pulverized coal regrinding tank 11 by the partition plate 10, when the number of the blocked thicker pulverized coal particles is large, the pulverized coal particles can overflow from the pulverized coal regrinding tank 11 to the third stage grinding hammer 8 to be ground again, and finer pulverized coal particles in the pulverized coal particles ground by the third stage grinding hammer 8 can enter the conveying chamber 91 through the partition plate channel 101 between the partition plate 10 and the driving shaft 3 and then are conveyed to the pulverized coal sorting chamber 12 through the gas conveying device 9,
the classifying chamber channel 121 of the pulverized coal classifying chamber 12 is an arc-shaped channel, so that under the centrifugal force, the pulverized coal particles entering the classifying chamber channel 121 from the gas transmission chamber 91 move against the outer side of the classifying chamber channel 121, and the finer pulverized coal particles move against the inner side of the outer side of the classifying chamber channel 121.
At the outlet of the sorting chamber channel 121, a separating partition 122 is provided, the separating partition 122 also having an arc shape, the separation baffle 122 enables the pulverized coal particles moving from the sorting chamber channel 121 to the separation baffle 122 to be directed toward the position of the pulverized coal outlet 123, and further, the position of the separation baffle plate 122 can move towards the center of the coal dust sorting chamber 12, a gap is left between the separation baffle plate 122 and the outer wall of the coal dust sorting chamber 12, the gap is 1-10 cm, the coal dust particles moving against the outer side of the sorting chamber channel 121 can be guided to the coarse coal dust return pipe 13 through the gap between the separation baffle 122 and the outer wall of the coal dust sorting chamber 12, it is possible to control the flow rate of the pulverized coal directed to the pulverized coal outlet 123 and the flow rate of the pulverized coal particles required to flow back to the coarse pulverized coal return pipe 13 by controlling the position of the separation partition 122.
The separation baffle 122 performs secondary separation on the pulverized coal entering the pulverized coal separation chamber 12 from the separation chamber channel 121, and under the action of centrifugal force, coarse pulverized coal particles enter the coarse pulverized coal return pipe 13 from a gap between the separation baffle 122 and the outer wall of the pulverized coal separation chamber 12 under the action of air pressure, and then flow back to the first-stage grinding hammer 6 from the coarse pulverized coal inlet 131 for secondary grinding. The fine coal powder particles after secondary separation by the separation partition plate 122 are sent to the coal powder control device 14 through a coal powder outlet 123 by a pipeline, the coal powder control device 14 can comprise an air outlet amount control device for controlling the delivery of mixed coal gas consisting of fine coal powder and air to a combustion chamber of a boiler or a kiln, and a coal gas mixed concentration tester for testing the concentration of the fine coal powder in the mixed coal gas, so that the coal powder control device 14 can further monitor the concentration of the fine coal powder in the mixed coal gas according to the combustion requirements of the boiler or the kiln, control the flow and pressure of the output of the mixed coal gas, and send the mixed coal gas meeting the combustion requirements to the combustion chamber of the boiler or the kiln for combustion.
In a preferred embodiment, the coarse coal powder return pipe 13 is provided with an adjusting plate 132 and an adjusting screw 133 connected to the adjusting plate 132 on a side close to the coal powder sorting chamber 12. Thus, the flow rate of the pulverized coal is controlled by adjusting the opening and closing degree of the adjusting plate 132 via the adjusting screw 133.
FIG. 2 is a partial schematic structural diagram of a first stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in FIG. 1; FIG. 3 is a partial schematic structural diagram of a second stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in FIG. 1; fig. 4 is a partial structural schematic diagram of a third-stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in fig. 1. Referring to fig. 1-4, in a preferred embodiment, the first stage grinding hammer 6 comprises a first body 61 fixedly attached to the drive shaft 3 and a rectangular ram head 62 fixedly attached to the outside of the first body; the second-stage grinding hammer 7 comprises a second hammer body 71 fixedly connected to the driving shaft 3, a hammer head support frame 72 fixedly connected to the outer side of the second hammer body 71, and a cylindrical quadrangular hammer head 73 rotatably connected with the hammer head support frame 72; the third-stage grinding hammer 8 comprises a third hammer body 81 fixedly connected to the driving shaft 3, a hammer head base 82 fixedly connected to the outer side of the third hammer body 81, a hammer head bracket 83 rotatably connected to the hammer head base 82, and a cylindrical quadrangular hammer head 73 rotatably connected to the hammer head bracket 83.
And return impact lining plates 15 are fixedly arranged at positions corresponding to the first-stage grinding hammer 6, the second-stage grinding hammer 7 and the third-stage grinding hammer 8 in the shell, and certain gaps are reserved between the hammers at each stage and the return impact lining plates 15. Therefore, when the hammers at all stages rotate at high speed, the pulverized coal is impacted at high speed between the hammers and the impact-back lining plate 15, and the grinding capacity is improved. And the impact-back lining plate 15 can be matched with the corresponding grinding hammer to flexibly adopt materials and shapes without strength, so that the crushing capability of the grinding hammers at all levels on the pulverized coal can be conveniently controlled, and meanwhile, the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns can be conveniently maintained.
The first, second, and third hammer bodies 61, 71, 81 may be flanges fixedly connected to the drive shaft 3. The first hammer body 61, the second hammer body 71 and the third hammer body 81 can be of an integral disc-shaped structure, and holes are not formed in the first hammer body, so that the pulverized coal can only pass through the space between the hammer heads of the grinding hammers at all levels and the corresponding impact-back lining plate 15, and the pulverized coal can be fully ground.
The rectangular hammer head 62 can be a fixed rectangular manganese steel plate subjected to high-temperature wear-resistant treatment; this can satisfy the strength requirement of the primary pulverization.
The hammer head support frame 72 is fixedly connected to the outer side of the second hammer body 71, the cylindrical quadrangular prism-shaped hammer head 73 is rotatably connected with the hammer head support frame 72, the cylindrical quadrangular prism-shaped hammer head 73 can be cylindrical quadrangular high-temperature wear-resistant manganese steel, and when the second hammer body 71 is driven by the driving shaft 3 to rotate at a high speed, the cylindrical quadrangular prism-shaped hammer head 73 collides with pulverized coal particles in the grinding process to enable the pulverized coal particles to rotate around a mounting shaft, so that the grinding capacity of the second-stage grinding hammer 7 can be further enhanced.
The hammer head base 82 is fixedly connected to the outer side of the third hammer body 81, the hammer head support 83 is rotatably connected to the hammer head base 82, the hammer head support 83 can rotate around the mounting shaft, the cylindrical quadrangular hammer head 73 is rotatably connected to the hammer head support 83, the cylindrical quadrangular hammer head 73 can rotate around the mounting shaft, when the third hammer body 81 is driven by the driving shaft 3 to rotate at a high speed, on one hand, the cylindrical quadrangular hammer head 73 collides with pulverized coal particles in the grinding process to enable the pulverized coal particles to rotate around the mounting shaft, on the other hand, the hammer head support 83 collides with the pulverized coal particles in the grinding process to enable the pulverized coal particles to oscillate around the mounting shaft of the hammer head base 82, and therefore, the grinding capacity of the third-stage grinding hammer 8 can be further enhanced.
In a preferred embodiment, the feed hopper 5 is provided with an iron removal device 51. The iron removing device can adsorb and remove metal impurities in the coal blocks conveyed by the feed hopper 5, so that damage to energy-saving pulverized coal grinding and conveying equipment for boilers and kilns is avoided.
In a preferred embodiment, the feed hopper 5 is provided with a coal supply control device 52. The coal supply control device 52 can be a valve or a packing auger controlled by a variable frequency motor, so that the flow of the coal blocks entering the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns can be controlled according to the requirement of the coal gas yield.
In a preferred embodiment, the housing 2 is provided with an air inlet control device 16 on a side close to the feeding hopper 5. The air inlet control device 16 can be an air door controlled by a limit switch, so that the working flow rate of the pulverized coal can be conveniently and flexibly controlled by controlling the air inlet volume of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns.
The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns provided by the invention grinds coal briquettes by three groups of grinding hammers rotating at high speed, and then grinds the coal briquettes back by primary grinding and primary sorting back grinding, so that the raw coal is ground, pressed, impacted and manufactured into a four-in-one body in three-stage grinding. Raw coal can be ground into combustible mixed coal powder meeting the use requirements of various working conditions, and the coal powder is almost suitable for all coal types including bituminous coal, anthracite, lignite and the like. The produced fine coal powder can be fully and cleanly combusted, no black smoke is discharged, the heat loss caused by incomplete combustion of coal in a boiler and a kiln is basically eliminated, and the discharge of various pollutants is greatly reduced. Therefore, the utilization efficiency of the raw coal is greatly improved, and the cost of the raw coal is saved.
It should be appreciated by those of skill in the art that while the present invention has been described in terms of several embodiments, not every embodiment includes only a single embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including technical equivalents which are related to the embodiments and which are combined with each other to illustrate the scope of the present invention.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent alterations, modifications and combinations can be made by those skilled in the art without departing from the spirit and principles of the invention.
Claims (6)
1. An energy-saving pulverized coal grinding and conveying device for boilers and kilns comprises a machine shell installed on a rack, a driving shaft penetrating through the machine shell and arranged on the rack, a driving wheel arranged on the driving shaft, a feeding hopper arranged on the machine shell, and a first-stage grinding hammer, a second-stage grinding hammer, a third-stage grinding hammer and a gas conveying device arranged on the driving shaft in the machine shell in sequence, and is characterized in that a partition plate is arranged between the third-stage grinding hammer and the gas conveying device, a pulverized coal back-grinding groove is arranged between the partition plate and the third-stage grinding hammer, the machine shell is further provided with a pulverized coal separation chamber, the pulverized coal separation chamber is connected with the gas conveying device through an arc-shaped separation chamber channel, a separation partition plate is arranged at an outlet of the separation chamber channel, and a coarse pulverized coal return pipe is arranged between the pulverized coal separation chamber and the first-stage grinding hammer, a coarse coal powder inlet is arranged between the coarse coal powder return pipe and the first-stage grinding hammer, the coal powder sorting chamber comprises a coal powder outlet, and the coal powder outlet is connected with a coal powder control device.
2. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein an adjusting plate and an adjusting screw connected with the adjusting plate are arranged on one side of the coarse pulverized coal return pipe close to the pulverized coal sorting chamber.
3. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein the first-stage grinding hammer comprises a first hammer body fixedly connected to the driving shaft and a rectangular hammer head fixedly connected to the outer side of the first hammer body; the second-stage grinding hammer comprises a second hammer body fixedly connected to the driving shaft, a hammer head support frame fixedly connected to the outer side of the second hammer body, and a cylindrical quadrangular hammer head rotatably connected with the hammer head support frame; the third-stage grinding hammer comprises a third hammer body fixedly connected to the driving shaft, a hammer head base fixedly connected to the outer side of the third hammer body, a hammer head support rotatably connected to the hammer head base, and a cylindrical quadrangular hammer head rotatably connected to the hammer head support.
4. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein the feed hopper is provided with an iron removal device.
5. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein the feed hopper is provided with a coal supply control device.
6. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein the casing is provided with an air inlet control device at one side close to the feed hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110373274.1A CN102494348B (en) | 2011-11-22 | 2011-11-22 | Energy-saving pulverized coal grinding and delivering equipment for boilers and kilns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110373274.1A CN102494348B (en) | 2011-11-22 | 2011-11-22 | Energy-saving pulverized coal grinding and delivering equipment for boilers and kilns |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102494348A true CN102494348A (en) | 2012-06-13 |
| CN102494348B CN102494348B (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110373274.1A Expired - Fee Related CN102494348B (en) | 2011-11-22 | 2011-11-22 | Energy-saving pulverized coal grinding and delivering equipment for boilers and kilns |
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| Country | Link |
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| CN (1) | CN102494348B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966966A (en) * | 2012-11-12 | 2013-03-13 | 南阳市亚龙筑路机械制造有限公司 | Large dual-suction three-grinding high pressure impeller coal mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5941467A (en) * | 1997-09-10 | 1999-08-24 | Mcardle; Matthew J. | System and method for reducing material |
| JP2000046315A (en) * | 1998-07-27 | 2000-02-18 | Ishikawajima Harima Heavy Ind Co Ltd | Pulverized coal distributing device |
| US6360975B1 (en) * | 1999-06-24 | 2002-03-26 | Ernest Csendes | Method an apparatus for comminuting solid particles |
| CN2878934Y (en) * | 2006-03-16 | 2007-03-14 | 王教业 | Burner for pulverized coal |
| CN101008496A (en) * | 2006-01-26 | 2007-08-01 | 何相助 | Combined combustion machine |
| CN100534625C (en) * | 2007-06-01 | 2009-09-02 | 安徽省华鑫铅业集团有限公司 | Centrifugal type composite coal-grinding and powder-spraying machine |
-
2011
- 2011-11-22 CN CN201110373274.1A patent/CN102494348B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5941467A (en) * | 1997-09-10 | 1999-08-24 | Mcardle; Matthew J. | System and method for reducing material |
| JP2000046315A (en) * | 1998-07-27 | 2000-02-18 | Ishikawajima Harima Heavy Ind Co Ltd | Pulverized coal distributing device |
| US6360975B1 (en) * | 1999-06-24 | 2002-03-26 | Ernest Csendes | Method an apparatus for comminuting solid particles |
| CN101008496A (en) * | 2006-01-26 | 2007-08-01 | 何相助 | Combined combustion machine |
| CN2878934Y (en) * | 2006-03-16 | 2007-03-14 | 王教业 | Burner for pulverized coal |
| CN100534625C (en) * | 2007-06-01 | 2009-09-02 | 安徽省华鑫铅业集团有限公司 | Centrifugal type composite coal-grinding and powder-spraying machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966966A (en) * | 2012-11-12 | 2013-03-13 | 南阳市亚龙筑路机械制造有限公司 | Large dual-suction three-grinding high pressure impeller coal mill |
| CN102966966B (en) * | 2012-11-12 | 2014-11-12 | 南阳市亚龙筑路机械制造有限公司 | Large dual-suction three-grinding high pressure impeller coal mill |
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| Publication number | Publication date |
|---|---|
| CN102494348B (en) | 2014-04-16 |
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