CN104061784B - Annular lime kiln maintenance construction method - Google Patents
Annular lime kiln maintenance construction method Download PDFInfo
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- CN104061784B CN104061784B CN201410255290.4A CN201410255290A CN104061784B CN 104061784 B CN104061784 B CN 104061784B CN 201410255290 A CN201410255290 A CN 201410255290A CN 104061784 B CN104061784 B CN 104061784B
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Abstract
The invention discloses a kind of annular lime kiln maintenance construction method, adopt self-declining type layering maintenance construction method, one is because be not at the very start material in annular lime kiln is emptied, annular lime kiln carries out cooling down under material guard mode, has certain protective effect to refractory material masonry in annular lime kiln; Two is utilize level of filler material to set up or as workbench, relative altitude is not high, and workmen's security is greatly ensured; Three when being refractory material and the structural members clearing up dross and dismounting scaling loss from top to bottom, and the industrial waste of construction tool and cleaning, dismounting can not cause man-made further destroy to refractory material intact in annular lime kiln and structure; Four is to shorten maintenance duration, reduces recondition expense.
Description
Technical field
The present invention relates to a kind of stove maintenance construction method, be specifically related to a kind of annular lime kiln maintenance construction method.
Background technology
Annular lime kiln has been widely used in metallurgy industry at home and has produced lime, light dolomite, because it is long-time, fully loaded runs, the long-term erosion by high temperature in kiln, material wash away and lime, the impact of impurity generation chemical reaction in dolomite, easy generation damage in various degree, as material dross, refractory material furnace lining and upper and lower arch bridge breakage, structural member scaling loss etc. in kiln, must stop production after repairing and could normally produce.
According to the size of maintenance content, technical requirement and workload, the maintenance of annular lime kiln be generally divided into overhaul, in repair and conventional maintenance.Traditional annular lime kiln repair method, is emptied by material in kiln, sets up scaffold, and cleaning material dross, repairs or tear open to build and damage refractory material, repair and install all kinds of structural members etc.
Overhaul according to the method described above, there are some drawbacks.One is that scaffold work platform is high, and workmen's operation in restricted clearance exists certain potential safety hazard; Two when being refractory material and the structural members clearing up dross and dismounting scaling loss from top to bottom, the industrial wastes such as the dross of construction tool and cleaning, the refractory material of dismounting and structural member can damage refractory material intact in kiln and structural member to a certain extent, add maintenance workload and recondition expense; Three is after in kiln, material directly empties, and owing to expanding with heat and contract with cold, can cause adverse effect to a certain degree to refractory material intact in kiln.The method construction period is long, cost is large.
Summary of the invention
Object of the present invention is exactly for above-mentioned defect, a kind of safety that can ensure workmen is provided, man-made further destroy is not caused to refractory material intact in kiln and structure again, the annular lime kiln maintenance construction method of maintenance duration, reduction recondition expense can also be shortened.
For achieving the above object, the annular lime kiln maintenance construction method designed by the present invention, described method comprises the steps:
S1, only fire stop kiln, exhaust gas fan low cruise, keep tiny structure in annular lime kiln;
S2, material loading and discharging, progressively replace the heat material in annular lime kiln from top lower portion;
In S3, annular lime kiln, level of filler material unloads supreme inner sleeve lower end, when namely corresponding to top endless tube platform plane, stops discharging, using the inspection platform of top endless tube platform plane as annular lime kiln internal upper part defective item;
When the head temperature of S4, annular lime kiln is down to normal temperature, stop all blower fans, open top endless tube platform access door, iron plate placed by material, set up the top facility of scaffold to upper inner sleeve, upper outer sleeve and annular lime kiln and clear up, overhaul;
After the top facility maintenance of S5, upper inner sleeve, upper outer sleeve and annular lime kiln, remove construction equipment, continue discharging; Along with level of filler material in annular lime kiln declines, situation in Real Time Observation annular lime kiln, if find dross and damaged part, namely stop discharging, with this level of filler material for inspection platform, treatment in situ related defects, until at the bottom of kiln;
S6, material clearancen, process discharging platform bottom defect, completes maintenance in annular lime kiln kiln.
Further, described step S5 is specially:
When S51, level of filler material drop to burner platform plane, stop discharging, defect inside and outside process upper combustion chamber;
When S52, level of filler material drop to lower burner platform plane, stop discharging, defect inside and outside process lower combustion chamber;
When S53, level of filler material drop to discharging platform top access door platform plane, stop discharging, material platform upper access door of starting discharging, enter kiln and take off flat material, lay iron plate, sets up scaffold, processes the bottom refractory material structure of lower inner sleeve and column.
Further, between described step S1 and S2, also comprise step S11: blind plate blocked up to the outside network of coal gas of converter and inner pipe network, to diffuse and nitrogen purges, blind plate is blocked up to the coke-stove gas pipe network of igniting, diffuse and nitrogen purges.
The invention has the advantages that: the present invention adopts self-declining type layering to overhaul construction method, have the following advantages: one is because be not at the very start material in annular lime kiln is emptied, annular lime kiln carries out cooling down under material guard mode, has certain protective effect to refractory material masonry in annular lime kiln; Two is utilize level of filler material to set up or as workbench, relative altitude is not high, and workmen's security is greatly ensured; Three when being refractory material and the structural members clearing up dross and dismounting scaling loss from top to bottom, and the industrial waste of construction tool and cleaning, dismounting can not cause man-made further destroy to refractory material intact in annular lime kiln and structure; Four is to shorten maintenance duration, reduces recondition expense.
Accompanying drawing explanation
Fig. 1 is the structural representation of annular lime kiln of the present invention.
In figure, each part numbers is as follows: outer sleeve top structure of refractory 1, upper inner sleeve 2, top endless tube platform plane 3, top endless tube platform access door 4, lower inner sleeve 5, upper combustion chamber 6, upper burner platform plane 7, lower combustion chamber 8, lower burner platform plane 9, bottom refractory material structure 10, column 11, discharging platform top access door 12, discharging platform top access door platform plane 13, upper outer sleeve 14.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
The poor stability existed for tradition maintenance construction method, to destroy in annular lime kiln the problems such as refractory material, maintenance duration length, expense increase, the invention provides a kind of new annular lime kiln maintenance construction method, it can ensure the safety of workmen, man-made further destroy is not caused to refractory material intact in annular lime kiln and structure again, can also maintenance duration be shortened, reduce recondition expense.
This maintenance construction method comprises the steps:
S1, only fire stop kiln, exhaust gas fan low cruise, keep tiny structure in annular lime kiln;
S2, material loading and discharging, progressively replace the heat material in annular lime kiln from top lower portion, makes material movement in annular lime kiln on the one hand, prevent fluffy material, reduces annulus kiln top temperature on the other hand;
In S3, annular lime kiln, level of filler material unloads supreme inner sleeve lower end, when namely corresponding to top endless tube platform plane, stops discharging, using the inspection platform of top endless tube platform plane as annular lime kiln internal upper part defective item;
When the head temperature of S4, annular lime kiln is down to normal temperature, stop all blower fans, open top endless tube platform access door, iron plate placed by material, set up the top facility of scaffold to upper inner sleeve, upper outer sleeve and annular lime kiln and clear up, overhaul;
After the top facility maintenance of S5, upper inner sleeve, upper outer sleeve and annular lime kiln, remove construction equipment, continue discharging; Along with level of filler material in annular lime kiln declines, situation in Real Time Observation annular lime kiln, if find dross and damaged part, namely stop discharging, with this level of filler material for inspection platform, treatment in situ related defects, until at the bottom of kiln;
S6, material clearancen, process discharging platform bottom defect, completes maintenance in annular lime kiln kiln.
The present invention adopts above-mentioned self-declining type layering to overhaul construction method, have the following advantages: one is because be not at the very start material in annular lime kiln is emptied, annular lime kiln carries out cooling down under material guard mode, has certain protective effect to refractory material masonry in annular lime kiln; Two is utilize level of filler material to set up or as workbench, relative altitude is not high, and workmen's security is greatly ensured; Three when being refractory material and the structural members clearing up dross and dismounting scaling loss from top to bottom, and the industrial waste of construction tool and cleaning, dismounting can not cause man-made further destroy to refractory material intact in annular lime kiln and structure; Four is to shorten maintenance duration, reduces recondition expense.
Shown in embodiment 1 composition graphs 1, the concrete maintenance construction method of this annular lime kiln is as follows:
S1, only fire stop kiln, exhaust gas fan low cruise, keep tiny structure in annular lime kiln;
S11: blind plate blocked up to the outside network of coal gas of converter and inner pipe network, to diffuse and nitrogen purges, blind plate is blocked up to the coke-stove gas pipe network of igniting, diffuse and nitrogen purges;
S2, material loading and discharging, progressively replace the heat material in annular lime kiln from top lower portion;
In S3, annular lime kiln, level of filler material unloads supreme inner sleeve 2 lower end, when namely corresponding to top endless tube platform plane 3, stops discharging, using the inspection platform of top endless tube platform plane 3 as annular lime kiln internal upper part defective item;
When the head temperature of S4, annular lime kiln is down to normal temperature, stop all blower fans, open top endless tube platform access door 4, iron plate placed by material, set up the top facility of scaffold to upper inner sleeve 2, upper outer sleeve 14 and annular lime kiln to clear up, overhaul (as repaired outer sleeve top structure of refractory 1, the refractory material of inner sleeve 2 and metal structure in reparation);
After the top facility maintenance of S51, upper inner sleeve 2, upper outer sleeve 14 and annular lime kiln, remove construction equipment, continue discharging; When level of filler material drops to burner platform plane 7, stop discharging, defect inside and outside process upper combustion chamber 6;
When S52, level of filler material drop to lower burner platform plane 9, stop discharging, defect inside and outside process lower combustion chamber 8;
When S53, level of filler material drop to discharging platform top access door platform plane 13, stop discharging, material platform upper access door 12 of starting discharging, enter kiln and take off flat material, lay iron plate, sets up scaffold, processes the bottom refractory material structure 10 of lower inner sleeve 5 and column 11;
S6, material clearancen, process discharging platform bottom defect, completes maintenance in annular lime kiln.
With the main line of the overhauling project of annular lime kiln body for the construction network duration in embodiment 1, with raw material system, finished product system, coal gas system, combustion-aid air system and electrically, the overhauling project of instrument system is for subordinate line, reasonable arrangement overhauling project, from only fiery to the totally 60 days construction period of igniting, than expection 15 days in advance.
Draw off material in embodiment 1 in annular lime kiln and judge purposes according to the difference of detection of active degree, >=300ml is used as steel-making active lime, >=220ml is used as sintering quick lime, and < 220ml is used as pneumatic steelmaking lime stone, achieves utilization of resources.
Claims (3)
1. an annular lime kiln maintenance construction method, is characterized in that: described method comprises the steps:
S1, only fire stop kiln, exhaust gas fan low cruise, keep tiny structure in annular lime kiln;
S2, material loading and discharging, progressively replace the heat material in annular lime kiln from top lower portion;
In S3, annular lime kiln, level of filler material unloads supreme inner sleeve (2) lower end, when namely corresponding to top endless tube platform plane (3), stop discharging, using the inspection platform of top endless tube platform plane (3) as annular lime kiln internal upper part defective item;
When the head temperature of S4, annular lime kiln is down to normal temperature, stop all blower fans, open top endless tube platform access door (4), iron plate placed by material, sets up the top facility of scaffold to upper inner sleeve (2), upper outer sleeve (14) and annular lime kiln and clear up, overhaul;
After the top facility maintenance of S5, upper inner sleeve (2), upper outer sleeve (14) and annular lime kiln, remove construction equipment, continue discharging; Along with level of filler material in annular lime kiln declines, situation in Real Time Observation annular lime kiln, if find dross and damaged part, namely stop discharging, with this level of filler material for inspection platform, treatment in situ related defects, until at the bottom of kiln;
S6, material clearancen, process discharging platform bottom defect, completes maintenance in annular lime kiln kiln.
2. annular lime kiln maintenance construction method according to claim 1, is characterized in that: described step S5 is specially:
When S51, level of filler material drop to burner platform plane (7), stop discharging, the inside and outside defect of process upper combustion chamber (6);
When S52, level of filler material drop to lower burner platform plane (9), stop discharging, the inside and outside defect of process lower combustion chamber (8);
When S53, level of filler material drop to discharging platform top access door platform plane (13), stop discharging, start discharging and expect platform upper access door (12), enter kiln and take off flat material, lay iron plate, set up scaffold, the bottom refractory material structure (10) of lower inner sleeve (5) and column (11) are processed.
3. annular lime kiln maintenance construction method according to claim 1 and 2, it is characterized in that: between described step S1 and S2, also comprise step S11: blind plate blocked up to the outside network of coal gas of converter and inner pipe network, to diffuse and nitrogen purges, blind plate is blocked up to the coke-stove gas pipe network of igniting, diffuse and nitrogen purges.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410255290.4A CN104061784B (en) | 2014-06-09 | 2014-06-09 | Annular lime kiln maintenance construction method |
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| CN201410255290.4A CN104061784B (en) | 2014-06-09 | 2014-06-09 | Annular lime kiln maintenance construction method |
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| CN104061784B true CN104061784B (en) | 2015-09-02 |
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| CN112113429A (en) * | 2019-06-21 | 2020-12-22 | 南京梅山冶金发展有限公司 | Method for realizing sectional replacement of refractory material of sleeve kiln and prolonging service life of sleeve kiln |
| CN112441756B (en) * | 2019-08-30 | 2022-04-15 | 南京宝地梅山产城发展有限公司 | Online repair method for refractory material of sleeve kiln burner face plate |
| CN112642831A (en) * | 2019-10-11 | 2021-04-13 | 江苏中圣园科技股份有限公司 | Anti-nodulation structure of flow guide cap of sleeve kiln |
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| CN101749946A (en) * | 2008-12-10 | 2010-06-23 | 中冶天工建设有限公司 | Installation method of annular heating furnace equipment |
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| CN202836180U (en) * | 2012-08-08 | 2013-03-27 | 南京梅山冶金发展有限公司 | Ring-shaped sleeve kiln |
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|---|---|---|---|---|
| GB190020572A (en) * | 1900-11-14 | 1901-01-26 | Paul Otto Von Krottnaurer | Drying Apparatus for Moulded Bricks or Blocks. |
| CN1172942A (en) * | 1996-08-02 | 1998-02-11 | 柏飞 | Moving type tunnel kiln and technology set-up for producing clay product using said tunnel kiln |
| CN2937979Y (en) * | 2006-06-28 | 2007-08-22 | 南京中圣园机电设备有限公司 | Ring-shaped sleeve kiln of burning low heat value gas |
| CN101684985B (en) * | 2008-09-24 | 2011-08-17 | 中冶天工建设有限公司 | Masonry method of bottom heat preservation and insulation bricks of annular heating furnace |
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