CN115636605A - Energy-saving baffling vertical lime kiln - Google Patents
Energy-saving baffling vertical lime kiln Download PDFInfo
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- CN115636605A CN115636605A CN202211577076.1A CN202211577076A CN115636605A CN 115636605 A CN115636605 A CN 115636605A CN 202211577076 A CN202211577076 A CN 202211577076A CN 115636605 A CN115636605 A CN 115636605A
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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
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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Abstract
The invention relates to the technical field of lime kilns, and provides an energy-saving baffling vertical lime kiln, which comprises: the kiln comprises a kiln body, a spiral conveying channel, a sieve plate and a combustion part, wherein the kiln body is provided with an inner cavity, a feeding hole and a discharging hole, and the feeding hole and the discharging hole are communicated with the inner cavity; the spiral conveying channel is arranged in the inner cavity and provided with an inlet and an outlet, and the inlet is communicated with the feed inlet; the sieve plate is arranged in the inner cavity and is positioned below the spiral conveying channel, the sieve plate is in a spiral shape, and the sieve plate is connected with the outlet; the sealing plate is arranged in the inner cavity, the sealing plate is positioned at the outlet, the sealing plate and the spiral conveying channel divide the inner cavity into an upper part and a lower part, the sieve plate is positioned in the inner cavity of the lower part, and the spiral conveying channel is positioned in the inner cavity of the upper part; the combustion part sets up in the cavity, is located the sieve below, and the combustion part is used for the burning, and the discharge gate is located the combustion part below. Through the technical scheme, the problem that the heat of the high-temperature flue gas generated by the lime kiln in the prior art cannot be recycled is solved.
Description
Technical Field
The invention relates to the technical field of lime kilns, in particular to an energy-saving baffling vertical lime kiln.
Background
The lime kiln mainly comprises a kiln body, a feeding device, a distributing device, a combustion device, an ash discharging device and the like. The lime kiln is a device for heating limestone at high temperature to become lime, the limestone enters the lime kiln through a feeding device, and then the limestone is heated through a combustion device to be decomposed into lime and carbon dioxide.
In the prior art, lime is conveyed into a lime kiln body by a lime kiln, the lime is uniformly distributed by a distributing device, then a combustion device is heated at high temperature, and after all the lime is changed into lime, lime is discharged, so that the limestone can be continuously added. And the flue gas generated by the combustion device and the carbon dioxide decomposed from the limestone are high in temperature, but the heat cannot be recycled, continuous production cannot be realized, the energy waste is serious, and the efficiency is low.
Disclosure of Invention
The invention provides an energy-saving baffling vertical lime kiln, which solves the problem that the heat of high-temperature flue gas generated by a lime kiln in the related technology cannot be recycled.
The technical scheme of the invention is as follows:
an energy-saving baffling vertical lime kiln furnace comprises:
the kiln body is provided with an inner cavity, a feeding hole and a discharging hole, and the feeding hole and the discharging hole are communicated with the inner cavity;
the spiral conveying channel is arranged in the inner cavity and provided with an inlet and an outlet, and the inlet is communicated with the feeding hole;
the sieve plate is arranged in the inner cavity and is positioned below the spiral conveying channel, the sieve plate is spiral, and the sieve plate is connected with the outlet;
the sealing plate is arranged in the inner cavity, the sealing plate is positioned at the outlet, the sealing plate and the spiral conveying channel divide the inner cavity into an upper part and a lower part, the sieve plate is positioned in the inner cavity of the lower part, and the spiral conveying channel is positioned in the inner cavity of the upper part;
the combustion part is arranged in the inner cavity and located below the sieve plate, the combustion part is used for combustion, and the discharge port is located below the combustion part.
As a further technical solution, the method further comprises:
a drive member disposed within the inner cavity;
grind the piece, set up on the driving piece, it is located to grind the piece sieve top, grind the piece with the sieve forms the grinding space.
As a further technical scheme, the combustion part is the toper, the less one end of combustion part sectional area is kept away from the sieve still includes:
the filter plate is arranged on the combustion part and is positioned at the bottom of the combustion part;
and the material guide pipe is arranged on the combustion part and positioned below the filter plate, and the material guide pipe is communicated with the discharge hole.
As a further technical scheme, the method also comprises the following steps:
the vibration exciter is arranged on the filter plate and drives the filter plate to vibrate.
As a further technical scheme, the driving member is located below the material guiding pipe, and further comprises:
the driving shaft is arranged at the output end of the driving piece, and the driving piece drives the grinding piece to rotate through the driving shaft;
the stirring blades are arranged on the driving shaft at intervals on the circumference and are positioned above the filter plate, and the stirring blades are used for stirring lime.
As a further aspect, the grinding member includes:
a support frame disposed on the driving shaft;
the lapping plate sets up on the support frame, the lapping plate is fan-shaped and slope, lapping plate incline direction with filter plate incline direction is the same, the filter plate with form between the lapping plate grind the space.
As a further technical scheme, the distance between the grinding plate and the filter plate is gradually increased along the direction away from the driving shaft.
As a further technical scheme, the top of the kiln body is conical, and the kiln further comprises
And the chimney is arranged at the top of the kiln body and communicated with the inner cavity.
As a further technical scheme, the method also comprises
The guide plate is arranged in the inner cavity and is positioned in a spiral shape, the guide plate is positioned between the feed inlet and the inlet, and the guide plate is used for guiding limestone.
The working principle and the beneficial effects of the invention are as follows:
1. in the invention, limestone can fully contact with high-temperature gas by sequentially passing through the spiral conveying channel and the sieve plate, so that the preheating of the limestone is realized, the sieve plate can enable the limestone with smaller volume to directly fall off, the conveying time is reduced, and the batch decomposition of the limestone can be realized, so that the decomposition efficiency of the limestone is increased, and the use of energy is reduced;
2. in the invention, the limestone is further crushed by the grinding piece, and can be decomposed into smaller particles, thereby reducing the time for heating the limestone and improving the decomposition speed;
3. according to the invention, the limestone and the lime are filtered by the filter plate, so that the continuous decomposition of the limestone can be realized, and the vibration exciter can vibrate the filter plate to prevent the filter plate from being blocked;
4. in the invention, high-temperature gas is finally discharged from a chimney, and limestone powder brought by the high-temperature gas falls onto the guide plate from the top of the inner cavity to preheat limestone; the arrangement of the material guide plate can prevent high-temperature gas from being discharged from the feeding hole.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a diagram of the relationship between the spiral conveying path and the screen deck according to the present invention;
FIG. 4 is another perspective view of the spiral conveying path and screen deck of the present invention;
in the figure: 1. kiln body, 2, inner chamber, 3, feed inlet, 4, discharge gate, 5, spiral conveying channel, 6, import, 7, export, 8, sieve, 9, closing plate, 10, combustion part, 11, driving piece, 12, grinding piece, 13, grinding space, 14, filter plate, 15, passage, 16, vibration exciter, 17, drive shaft, 18, stirring leaf, 19, support frame, 20, grinding plate, 21, chimney, 22, passage.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
As shown in FIGS. 1 to 4, the present embodiment proposes
An energy-saving baffled vertical lime kiln, comprising:
the kiln comprises a kiln body 1, wherein the kiln body 1 is provided with an inner cavity 2, a feeding hole 3 and a discharging hole 4, and the feeding hole 3 and the discharging hole 4 are communicated with the inner cavity 2;
the spiral conveying channel 5 is arranged in the inner cavity 2, the spiral conveying channel 5 is provided with an inlet 6 and an outlet 7, and the inlet 6 is communicated with the feeding hole 3;
the sieve plate 8 is arranged in the inner cavity 2 and positioned below the spiral conveying channel 5, the sieve plate 8 is spiral, and the sieve plate 8 is connected with the outlet 7;
the sealing plate 9 is arranged in the inner cavity 2, the sealing plate 9 is positioned at the outlet 7, the sealing plate 9 and the spiral conveying channel 5 divide the inner cavity 2 into an upper part and a lower part, the sieve plate 8 is positioned in the inner cavity 2 of the lower part, and the spiral conveying channel 5 is positioned in the inner cavity 2 of the upper part;
the combustion part 10 is arranged in the inner cavity 2 and located below the sieve plate 8, the combustion part 10 is used for combustion, and the discharge port 4 is located below the combustion part 10.
In this embodiment, the limestone enters spiral conveying channel 5 through feed inlet 3 of kiln body 1, carry along spiral conveying channel 5, then sieve 8 sieves, sieve 8 is also the heliciform, so be less than sieve mesh diameter's limestone can follow the sieve mesh and drop to on the sieve 8 of below, the limestone that is greater than sieve mesh diameter continues to carry along sieve 8, then carry on the sieve 8 of below, great limestone can strike less limestone, then continue to carry, less limestone drops from the sieve mesh once more, the circulation is reciprocal, in the combustion portion 10 drops until lime, the limestone decomposes under high temperature environment. Flue gas and the high temperature carbon dioxide of burning can rise along inner chamber 2, can heat the lime stone at the in-process that rises, and high temperature gas can continue to rise toward rising through the sieve mesh earlier, and less lime stone intensifies faster, so decomposes sooner when dropping the combustion portion, and great lime stone process rolls along sieve 8, and heat time is long, also can be heated. When the high-temperature gas rises to the position of the sealing plate 9, the high-temperature gas does not continuously rise vertically, so the high-temperature gas is gathered at the outlet 7 and then enters the spiral conveying channel 5 to collide with the limestone in the spiral conveying channel 5, and the high-temperature gas heats the limestone in the rising process, namely the limestone is preheated in the conveying process, so the heating time of the limestone at the combustion part 10 is reduced. Can separate the limestone of equidimension not through sieve 8, less limestone descent speed is faster, can decompose earlier, also can provide the heat for great limestone. If the spiral conveying path 5 is used in all, the dropping speed of the limestone is the same, and the limestone having different sizes falls into the combustion part 10 at the same time, the decomposition efficiency may be lowered. Through this device, can increase thermal reuse because reduced limestone heating time to the use of the energy has been reduced.
Further, the method also comprises the following steps:
a driving member 11 arranged in the inner cavity 2;
the grinding piece 12 is arranged on the driving piece 11, the grinding piece 12 is positioned above the sieve plate 8, and the grinding piece 12 and the sieve plate 8 form a grinding space 13; .
In this embodiment, in order to increase the decomposition rate of the limestone, when the limestone is transported on the sieve plate 8, the grinding member 12 grinds the limestone to further pulverize the limestone, so that the limestone becomes smaller and the decomposition rate becomes faster. Because the sieve plate 8 is a spiral device, the grinding piece 12 can only rotate back and forth within a certain angle, and the interference between the grinding piece 12 and the sieve plate 8 can be prevented. Furthermore, the grinding space 13 is changed in size when the grinding member 12 is rotated, so that the ground limestone can fall down to avoid clogging.
Further technical scheme, combustion part 10 is the toper, and the sieve 8 is kept away from to the less one end of 10 sectional areas of combustion part, still includes:
a filter plate 14 disposed on the combustion part 10 and located at the bottom of the combustion part 10;
and the material guide pipe 15 is arranged on the combustion part 10 and is positioned below the filter plate 14, and the material guide pipe 15 is communicated with the discharge hole 4.
In this embodiment, in order to realize continuous production of the lime kiln, a filter plate 14 is disposed at the bottom of the combustion part 10, limestone after decomposing into lime falls into the guide pipe 15 through the filter plate 14, but the undecomposed limestone continues to decompose above the filter plate 14, and the combustion part 10 is tapered so that all the decomposed lime falls onto the filter plate 14. Preferably, the distance between the filter plate 14 and the sieve plate 8 is controlled, and the feeding speed of the limestone is controlled, so that the limestone falling immediately after the limestone on the filter plate 14 is decomposed can impact the filter plate 14, and the lime falls into the material guide pipe 15, thereby preventing the filter plate 14 from being blocked.
Further, the method also comprises the following steps:
and the vibration exciter 16 is arranged on the filter plate 14, and the vibration exciter 16 drives the filter plate 14 to vibrate.
In this embodiment, in order to further prevent the filter plate 14 from being blocked, the vibration exciter 16 is disposed on the filter plate 14, and the vibration exciter 16 drives the filter plate 14 to vibrate, so that lime on the filter plate 14 can drop, thereby increasing the limestone feeding speed, and even if lime is accumulated on the filter plate 14, the lime cannot be blocked, thereby increasing the decomposition speed of the limestone.
Further, the driving member 11 is disposed below the material guiding tube 15, and further includes:
the driving shaft 17 is arranged at the output end of the driving piece 11, and the driving piece 11 drives the grinding piece 12 to rotate through the driving shaft 17;
and a plurality of stirring blades 18 are arranged on the driving shaft 17 at intervals in the circumference, the stirring blades 18 are positioned above the filter plate 14, and the stirring blades 18 are used for stirring lime.
In this embodiment, in order to heat the limestone uniformly, the driving member 11 of the grinding member 12 is disposed below the material guiding pipe 15, and then the driving member 12 is driven to rotate by the driving shaft 17, that is, the driving shaft 17 passes through the material guiding pipe 15, the filter plate 14 and the sieve plate 8, and the stirring blade 18 is disposed on the driving shaft 17, so that the lime and the limestone on the combustion part 10 are stirred by the stirring blade 18.
Further, the grinding member 12 includes:
a support frame 19 provided on the drive shaft 17;
and a grinding plate 20 disposed on the support frame 19, wherein the grinding plate 20 is fan-shaped and inclined, the inclination direction of the grinding plate 20 is the same as the inclination direction of the filter plate 14, and a grinding space 13 is formed between the filter plate 14 and the grinding plate 20.
In this embodiment, since the sieve plate 8 is spiral, the grinding plate 20 needs to have a shape similar to or the same as that of the sieve plate 8, and the grinding plate 20 is moved away from or close to the sieve plate 8 when rotated. When the grinding space 13 is increased when the grinding space is far away from the sieve plate 8, limestone falls off; when the grinding plate 20 is brought close to the screen plate 8, the grinding space 13 becomes smaller, and limestone can be crushed, thereby reducing the volume of limestone.
Further, the grinding plate 20 is spaced from the filter plate 14 gradually increasing in a direction away from the drive shaft 17.
In this embodiment, when the lime stone was carried along spiral conveying path 5 and sieve 8, great lime stone can be close to 1 inner wall of the kiln body under the effect of centrifugal force, and less lime stone is kept away from 1 inner wall of the kiln body, so the interval between the grinding plate 20 of different positions and the sieve 8 is different, can be with less lime stone grinding littleer for the lime stone is heated the temperature rise rate, thereby accelerate lime stone decomposition speed.
Further, the top of the kiln body 1 is conical, and the kiln comprises
And the chimney 21 is arranged at the top of the kiln body 1, and the chimney 21 is communicated with the inner cavity 2.
In this embodiment, the high-temperature gas is finally discharged from the chimney 21, and the chimney 21 may be connected to a gas purification device to prevent the flue gas and carbon dioxide from polluting the environment. Because the limestone powder can be brought to the top of the inner cavity 2 in the rising process of the high-temperature gas, the conical kiln body 1 can prevent a part of the limestone powder from rising and can also realize the gathering effect on the high-temperature gas. The falling limestone powder heats the limestone. Preferably, a filter element can be provided at the place where the chimney 21 is connected to the kiln body 1, through which limestone powder is filtered.
Further, also comprises
The guide plate 22 is arranged in the inner cavity 2, the guide plate 22 is located in a spiral shape, the guide plate 22 is located between the feed inlet 3 and the inlet 6, and the guide plate 22 is used for guiding limestone.
In this embodiment, in order to prevent the high-temperature gas from being discharged from the feeding port 2, the material guide plate 22 is disposed between the conveying screw 5 and the feeding port 3, only the inlet 6 and the outlet 7 of the conveying screw 5 are communicated with the outside, but the material guide plate 22 is opened, so that the high-temperature gas rises along the conveying screw 5 to the inlet 6, rises from the material guide plate 22, and is not conveyed to the feeding port 2, thereby preventing the high-temperature gas from overflowing.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An energy-saving baffling vertical lime kiln is characterized by comprising:
the kiln comprises a kiln body (1), wherein the kiln body (1) is provided with an inner cavity (2), a feeding hole (3) and a discharging hole (4), and the feeding hole (3) and the discharging hole (4) are communicated with the inner cavity (2);
the spiral conveying channel (5) is arranged in the inner cavity (2), the spiral conveying channel (5) is provided with an inlet (6) and an outlet (7), and the inlet (6) is communicated with the feeding hole (3);
the sieve plate (8) is arranged in the inner cavity (2) and is positioned below the spiral conveying channel (5), the sieve plate (8) is spiral, and the sieve plate (8) is connected with the outlet (7);
the sealing plate (9) is arranged in the inner cavity (2), the sealing plate (9) is positioned at the outlet (7), the sealing plate (9) and the spiral conveying channel (5) divide the inner cavity (2) into an upper part and a lower part, the sieve plate (8) is positioned in the lower part of the inner cavity (2), and the spiral conveying channel (5) is positioned in the upper part of the inner cavity (2);
the combustion part (10) is arranged in the inner cavity (2) and located below the sieve plate (8), the combustion part (10) is used for combustion, and the discharge port (4) is located below the combustion part (10).
2. The energy-saving baffling vertical lime kiln as claimed in claim 1, further comprising:
a drive element (11) arranged in the inner chamber (2);
grind piece (12), set up on driving piece (11), it is located to grind piece (12) sieve (8) top, grind piece (12) with sieve (8) form and grind space (13).
3. An energy-saving baffled vertical lime kiln according to claim 2, characterized in that the combustion part (10) is conical, the smaller cross-sectional area end of the combustion part (10) is far away from the sieve plate (8); further comprising:
the filter plate (14) is arranged on the combustion part (10) and is positioned at the bottom of the combustion part (10);
and the material guide pipe (15) is arranged on the combustion part (10) and is positioned below the filter plate (14), and the material guide pipe (15) is communicated with the discharge hole (4).
4. An energy-saving baffled vertical lime kiln according to claim 3, further comprising:
the vibration exciter (16) is arranged on the filter plate (14), and the vibration exciter (16) drives the filter plate (14) to vibrate.
5. An energy-saving baffled vertical lime kiln according to claim 3, wherein the driving member (11) is located below the guide duct (15), further comprising:
the driving shaft (17) is arranged at the output end of the driving part (11), and the driving part (11) drives the grinding part (12) to rotate through the driving shaft (17);
the stirring blades (18) are arranged on the driving shaft (17) at intervals in the circumference, the stirring blades (18) are positioned above the filter plates (14), and the stirring blades (18) are used for stirring lime.
6. An energy-saving baffled vertical lime kiln according to claim 5, characterized in that the grinding member (12) comprises:
a support frame (19) provided on the drive shaft (17);
grinding plate (20), set up on support frame (19), grinding plate (20) are fan-shaped and slope, grinding plate (20) incline direction with filter plate (14) incline direction is the same, filter plate (14) with form between grinding plate (20) grind space (13).
7. An energy-saving baffling vertical lime kiln furnace according to claim 6, characterized in that the grinding plate (20) is gradually spaced from the filter plate (14) in a direction away from the drive shaft (17).
8. An energy-saving baffling vertical lime kiln as claimed in claim 1, wherein the top of the kiln body (1) is conical, further comprising
The chimney (21) is arranged at the top of the kiln body (1), and the chimney (21) is communicated with the inner cavity (2).
9. The energy-saving baffled vertical lime kiln of claim 8, further comprising
The guide plate (22) is arranged in the inner cavity (2), the guide plate (22) is located in a spiral shape, the guide plate (22) is located between the feeding hole (3) and the inlet (6), and the guide plate (22) is used for guiding limestone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211577076.1A CN115636605B (en) | 2022-12-09 | 2022-12-09 | Energy-saving baffling vertical lime kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211577076.1A CN115636605B (en) | 2022-12-09 | 2022-12-09 | Energy-saving baffling vertical lime kiln |
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| Publication Number | Publication Date |
|---|---|
| CN115636605A true CN115636605A (en) | 2023-01-24 |
| CN115636605B CN115636605B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211577076.1A Active CN115636605B (en) | 2022-12-09 | 2022-12-09 | Energy-saving baffling vertical lime kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115779579A (en) * | 2023-02-08 | 2023-03-14 | 山东汇宇新材料有限公司 | Petroleum coke calcination cooling flue gas treatment device with cleaning function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201036759Y (en) * | 2007-05-18 | 2008-03-19 | 中国矿业大学 | Mine gangue separating equipment |
| US20110229387A1 (en) * | 2008-07-10 | 2011-09-22 | Carmeuse Research & Technology | Method for Operating a Regenerative Shaft Furnace for Producing Lime |
| CN215975562U (en) * | 2021-08-26 | 2022-03-08 | 洛阳千百度窑炉科技有限公司 | Novel environment-friendly lime shaft kiln |
-
2022
- 2022-12-09 CN CN202211577076.1A patent/CN115636605B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201036759Y (en) * | 2007-05-18 | 2008-03-19 | 中国矿业大学 | Mine gangue separating equipment |
| US20110229387A1 (en) * | 2008-07-10 | 2011-09-22 | Carmeuse Research & Technology | Method for Operating a Regenerative Shaft Furnace for Producing Lime |
| CN215975562U (en) * | 2021-08-26 | 2022-03-08 | 洛阳千百度窑炉科技有限公司 | Novel environment-friendly lime shaft kiln |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115779579A (en) * | 2023-02-08 | 2023-03-14 | 山东汇宇新材料有限公司 | Petroleum coke calcination cooling flue gas treatment device with cleaning function |
| CN115779579B (en) * | 2023-02-08 | 2023-05-02 | 山东汇宇新材料有限公司 | Petroleum coke calcination cooling flue gas treatment device with cleaning function |
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| Publication number | Publication date |
|---|---|
| CN115636605B (en) | 2023-04-07 |
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