CN104163581A - A sealing method for a lime sleeve kiln having an output of 500 t/d - Google Patents
A sealing method for a lime sleeve kiln having an output of 500 t/d Download PDFInfo
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- CN104163581A CN104163581A CN201410297720.9A CN201410297720A CN104163581A CN 104163581 A CN104163581 A CN 104163581A CN 201410297720 A CN201410297720 A CN 201410297720A CN 104163581 A CN104163581 A CN 104163581A
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Abstract
A sealing method for a lime sleeve kiln having an output of 500 t/d is disclosed. By subjecting the lime sleeve kiln to damping down treatment, stopping driving of a wind system, discharging materials, and performing a series of steps of drying ovens, the safety of the sleeve kiln is guaranteed and refractories are not largely influenced.
Description
Technical field
The present invention relates to a kind of lime sleeve kiln, particularly a kind of 500t/d lime sleeve kiln envelope kiln method.
Background technology
Steel industry situation is lower at present, market is for being greater than demand, when each iron and steel is adjusted output according to market value, subsidiary products is such as larger having more than needed appears in the production of lime, and low yield is produced not only kiln is operated and brings impact, the rising that has also brought unit cost, for this reason, sleeve kiln is stopped to kiln and process, at Production requirement, again during recovery, open kiln.
Summary of the invention
For addressing the above problem, the invention discloses the method for the eccentric inner frame of a kind of semi-automatic adjustment beam and leveling.
In order to achieve the above object, the invention provides following technical scheme: a kind of 500t/d lime sleeve kiln envelope kiln method, comprises the steps:
(1), before envelope kiln, sleeve kiln output is set as to 250t/d;
(2), by normal running, kiln is carried out to damping down processing, stop gas burning system, and coal gas is cut off effectively;
(3), stop driving wind system;
(4), stop high-temperature blower system;
(5), keep discharging speed constant, upper combustion chamber's temperature during lower than 650 ℃, is set in 100t/d by output;
(6) continue discharging, discharging speed is 100t/d;
(7), when upper combustion chamber's temperature is during lower than 350 ℃, open high-temperature blower, make lime cooling air flow keep 3000-4000m
3/ h, forces coolingly, and stops discharging;
(8), stop high-temperature blower system;
(9), after 48 hours, material in kiln is all replaced, output is arranged on 300 tons/day;
(10), after 96 hours, discharging gap is set in 3600 seconds, the loosening and displacement that material in kiln is continued, is probably maintained to two weeks, stops discharging;
(11), stop cooling air system;
(12), during stopping kiln, fireman checks the sealing of kiln, finds that breakage carries out shutoff in time, stops wind and rainwater in kiln, damages resistance to material;
(13), stoker observes Wingdale situations to 7.4 meters of platforms, has or not powder phenomenon-tion, occurs that efflorescence replaces in time;
(14), before igniting, system is checked, ensure enough, the satisfactory gas supply of calorific value, cooling blower, drive the equipment works such as blower fan, high-temperature blower, Hydraulic Station normal;
(15), start all blower fans;
(16), lower combustion chamber's burner is lighted a fire, house steward's valve turns on the gas-fire, the main contactor of starting ignition equipment, regulate air control valve, corresponding combustion chamber and lower inner core cooling air carry out appropriate ventilation, to obtain combustion air, open burner gas line manual valve 5-8%, press the start key of burner trip switch, to can open the pneumatic valve of cutting soon;
(17), before igniting, turn on the gas-fire and cut soon valve, after 10 seconds, excessive coal gas is extracted out, tempering while preventing from lighting a fire, burning torch stretches in combustion chamber and stops to preposition simultaneously;
(18), igniting, and igniting within the short period of time of approximately 3 seconds, successfully complete.
(19) if light a fire unsuccessfully, need again light a fire, before igniting again, burner is controlled and must be turned off, and restarts, and in combustion gas successfully after igniting, burning torch exits from returning in combustion chamber.
(20), check the correct status of flame, if flame extinguishes, by cutting off immediately the combustion gas that is supplied to burner, because UV sensor does not have signal.Cut soon valve and will get to " closing " position, any uncontrolled gas-flow will be cut off.
(21), shaft furnace heat temperature raising carries out according to heating curve, if the temperature of lower combustion chamber rises too soon, just must increase combustion-supporting air quantity, until temperature rise returns to again heating curve requirement;
(22), for also obtainable even intensification in combustion chamber, top, the thermopair measured temperature in Gai combustion chamber, combustion chamber, top reaches before approximately 650 ℃ and can not start;
(23), during heat temperature raising, as long as the temperature at shaft furnace waste gas outlet place is lower than 200 ℃, " interchanger waste gas outlet " butterfly valve will keep cutting out so, meanwhile, concentrates on water of condensation in interchanger and will put composite plate by bottom and drain, after this, put dust flashboard and must close immediately to avoid the infiltration of ambient air, as long as spent air temperture reaches enough height, higher than 200 ℃, the butterfly valve of interchanger waste gas outlet will be opened, and drive air to be changed into through interchanger preheating by bypass simultaneously.
(24), heat temperature raising is according to heating curve strict implement, adopts thermocouple temperature measurement, combustion chamber increasing extent of temperature is strict controlled in certain limit.
As a modification of the present invention, the fan starting in described step (15) adopts electrical interlocks to control, and reach at Yao Ding-100pa chain promoter, opens a cooling blower, then starts exhaust gas fan, then drives fan starting.
A kind of 500t/d lime sleeve kiln envelope kiln method provided by the invention can be sealed kiln to kiln and process in the situation that producing that supply exceed demand, guarantees the safety of sleeve kiln, resistance to material is not produced to larger impact simultaneously.
Accompanying drawing explanation
Fig. 1 is heating curve figure of the present invention.
Embodiment
Below with reference to specific embodiment, technical scheme provided by the invention is elaborated, should understands following embodiment and only for the present invention is described, is not used in and limits the scope of the invention.
1, the preparation before envelope kiln
1.1 are ready to 3000 tons of left and right of dry pure Wingdale, are mainly that kiln endogenous pyrogen material and finished product are replaced, and prevent excessive moisture to bring in kiln, affect the life-span of resistance to material, and this point is extremely important.
The plastics film of 1.2 reliable in quality is some.Be mainly used in the wrapping to burner and vision slit, stop air and rainwater etc. to enter in kiln.
2, envelope kiln step
Before 2.1 envelope kilns, output is set as to 250t/d;
2.2 carry out damping down processing by normal running to kiln, stop gas burning system, and coal gas is cut off effectively;
2.3 stop driving wind system;
2.4 stop high-temperature blower system;
2.5 keep discharging speeds constant, and upper combustion chamber's temperature during lower than 650 ℃, is set in 100t/d by output, and object is to keep kiln temperature even variation, and the lime block of heat is together non-caked, can not cause dross;
2.6 continue discharging;
2.7 upper combustion chamber's temperature during lower than 350 ℃, are opened high-temperature blower, make lime cooling air flow keep 3000-4000m
3/ h, forces coolingly, has had significantly and reduce when now resistance to material temperature is produced relatively, and low air quantity is little on the impact of resistance to material, and stops discharging;
2.8 stop high-temperature blower system;
After 2.9 48 hours, material in kiln is all replaced, output is arranged on 300 tons/day, notes drop temperature during discharging, during discharging, with some Wen Yi, Wingdale temperature is detected, and record data, grope kiln temperature indirectly.Secondary imitation frosted glass can directly return in kiln and reuse, and cuts the waste;
After 2.10 96 hours, discharging gap is set in 3600 seconds, and the loosening and displacement that material in kiln is continued, is probably maintained to two weeks, stops discharging;
2.11 stop cooling air system;
2.12 during stopping kiln, and fireman checks the sealing of kiln, finds that breakage carries out shutoff in time, stops wind and rainwater in kiln, damages resistance to material;
2.13 stokers observe Wingdale situations to 7.4 meters of platforms, have or not powder phenomenon-tion, occur that efflorescence replaces in time;
3, baker
3.1 ensure enough, the satisfactory gas supply of calorific value before igniting, cooling blower, drive the equipment works such as blower fan, high-temperature blower, Hydraulic Station normal;
3.2 all fan startings adopt electrical interlocks to control: open cooling blower → startup exhaust gas fan (air door is closed startup) → driving fan starting (kiln top reach-100pa chain promoter);
First 3.3 light a fire to lower combustion chamber's burner, house steward's valve turns on the gas-fire, the main contactor of starting ignition equipment, regulate air control valve, appropriate ventilation must be carried out with lower inner core cooling air in corresponding combustion chamber, to obtain combustion air, opens burner gas line manual valve 5-8%, press the start key of burner trip switch, to can open the pneumatic valve of cutting soon.
Before 3.4 igniting, turn on the gas-fire and cut soon valve, after 10 seconds, excessive coal gas is extracted out, tempering while preventing from lighting a fire, burning torch stretches in combustion chamber and stops to preposition simultaneously.
3.5 igniting must successfully complete within the short period of time of approximately 3 seconds.Otherwise UV sensor will approve without flame, pneumatosphere is handled and is cut off flashboard and will automatically be closed to all gas supplies of this burner.Loss of ignition will be indicated by the signal lamp being arranged on burner trip switch header board, and signal lamp is red represents that ignition procedure is failed.
3.6 before again lighting a fire, and burner is controlled and must be turned off, and restarts.In combustion gas, successfully after igniting, burning torch exits from returning in combustion chamber.
3.7 must check the correct status of flame regularly, and fireman confirms detected result and master control operator the state of flame.Attention: flame may tempering.If flame extinguishes, be supplied to so the combustion gas of burner to cut off immediately, because UV sensor does not have signal.Cut soon valve and will get to " closing " position, any uncontrolled gas-flow will be cut off.
3.8 shaft furnace heat temperature raisings are carried out according to heating curve.If the temperature of lower combustion chamber rises too soon (although being minimum as far as possible gas quantity), so, combustion-supporting air quantity just must increase, until temperature rise returns to again heating curve requirement.
3.9 for also obtainable even intensification in combustion chamber, top, and the thermopair measured temperature in Gai combustion chamber, combustion chamber, top can not start before reaching approximately 650 ℃.
3.10 during heat temperature raising, needs only the temperature at shaft furnace waste gas outlet place lower than 200 ℃, and " interchanger waste gas outlet " butterfly valve will keep cutting out so.Meanwhile, concentrating on water of condensation in interchanger will put composite plate by bottom and drain.After this, put the infiltration that dust flashboard must cut out to avoid ambient air immediately.As long as spent air temperture reaches enough height, higher than 200 ℃, the butterfly valve of interchanger waste gas outlet will be opened, and otherwise, the pipe of interchanger inside may, because condensation is because dust deposit stops up, drive air to be changed into through interchanger preheating by bypass simultaneously.
3.11 heat temperature raisings, according to heating curve strict implement, adopt thermocouple temperature measurement, and combustion chamber increasing extent of temperature is strict controlled in certain limit, 10 ℃/h of <.
Claims (2)
1. a 500t/d lime sleeve kiln envelope kiln method, is characterized in that: comprise the steps:
(1), before envelope kiln, sleeve kiln output is set as to 250t/d;
(2), by normal running, kiln is carried out to damping down processing, stop gas burning system, and coal gas is cut off effectively;
(3), stop driving wind system;
(4), stop high-temperature blower system;
(5), keep discharging speed constant, upper combustion chamber's temperature during lower than 650 ℃, is set in 100t/d by output;
(6) continue discharging, discharging speed is 100t/d;
(7), when upper combustion chamber's temperature is during lower than 350 ℃, open high-temperature blower, make lime cooling air flow keep 3000-4000m
3/ h, forces coolingly, and stops discharging;
(8), stop high-temperature blower system;
(9), after 48 hours, material in kiln is all replaced, output is arranged on 300 tons/day;
(10), after 96 hours, discharging gap is set in 3600 seconds, the loosening and displacement that material in kiln is continued, is probably maintained to two weeks, stops discharging;
(11), stop cooling air system;
(12), during stopping kiln, fireman checks the sealing of kiln, finds that breakage carries out shutoff in time, stops wind and rainwater in kiln, damages resistance to material;
(13), stoker observes Wingdale situations to 7.4 meters of platforms, has or not powder phenomenon-tion, occurs that efflorescence replaces in time;
(14), before igniting, system is checked, ensure enough, the satisfactory gas supply of calorific value, cooling blower, drive the equipment works such as blower fan, high-temperature blower, Hydraulic Station normal;
(15), start all blower fans;
(16), lower combustion chamber's burner is lighted a fire, house steward's valve turns on the gas-fire, the main contactor of starting ignition equipment, regulate air control valve, corresponding combustion chamber and lower inner core cooling air carry out appropriate ventilation, to obtain combustion air, open burner gas line manual valve 5-8%, press the start key of burner trip switch, to can open the pneumatic valve of cutting soon;
(17), before igniting, turn on the gas-fire and cut soon valve, after 10 seconds, excessive coal gas is extracted out, tempering while preventing from lighting a fire, burning torch stretches in combustion chamber and stops to preposition simultaneously;
(18), igniting, and igniting within the short period of time of approximately 3 seconds, successfully complete;
(19) if light a fire unsuccessfully, need again light a fire, before igniting again, burner is controlled and must be turned off, and restarts, and in combustion gas successfully after igniting, burning torch exits from returning in combustion chamber;
(20), check the correct status of flame, if flame extinguishes, by cutting off immediately the combustion gas that is supplied to burner, because UV sensor does not have signal;
Cut soon valve and will get to " closing " position, any uncontrolled gas-flow will be cut off;
(21), shaft furnace heat temperature raising carries out according to heating curve, if the temperature of lower combustion chamber rises too soon, just must increase combustion-supporting air quantity, until temperature rise returns to again heating curve requirement;
(22), for also obtainable even intensification in combustion chamber, top, the thermopair measured temperature in Gai combustion chamber, combustion chamber, top reaches before approximately 650 ℃ and can not start;
(23), during heat temperature raising, as long as the temperature at shaft furnace waste gas outlet place is lower than 200 ℃, " interchanger waste gas outlet " butterfly valve will keep cutting out so, meanwhile, concentrate on water of condensation in interchanger and will put composite plate by bottom and drain, after this, put dust flashboard and must close immediately to avoid the infiltration of ambient air, as long as spent air temperture is higher than 200 ℃, the butterfly valve of interchanger waste gas outlet will be opened, and drive air to be changed into through interchanger preheating by bypass simultaneously;
(24), heat temperature raising is according to heating curve strict implement, adopts thermocouple temperature measurement, combustion chamber increasing extent of temperature is strict controlled in 10 ℃/h of <.
2. a kind of 500t/d lime sleeve kiln according to claim 1 seals kiln method, it is characterized in that: the fan starting in described step (15) adopts electrical interlocks to control, reach at Yao Ding-100pa chain promoter, open a cooling blower, then start exhaust gas fan, then drive fan starting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410297720.9A CN104163581B (en) | 2014-06-29 | 2014-06-29 | A kind of 500t/d lime sleeve kiln seals kiln method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410297720.9A CN104163581B (en) | 2014-06-29 | 2014-06-29 | A kind of 500t/d lime sleeve kiln seals kiln method |
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| CN104163581A true CN104163581A (en) | 2014-11-26 |
| CN104163581B CN104163581B (en) | 2017-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108484101A (en) * | 2018-04-18 | 2018-09-04 | 福建省东丰阁文化发展有限公司 | A kind of imperial kiln manufacture craft of gas burning |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201283594Y (en) * | 2008-11-17 | 2009-08-05 | 贵州开磷（集团）有限责任公司 | Gypsum standardized brick curing kiln door |
| CN102030514A (en) * | 2010-11-11 | 2011-04-27 | 侯力平 | Preparation method of purple ceramic |
| CN202865126U (en) * | 2012-08-22 | 2013-04-10 | 湖南省冶金规划设计院 | Dual-layer kiln crown sealing device of lime shaft kiln |
-
2014
- 2014-06-29 CN CN201410297720.9A patent/CN104163581B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201283594Y (en) * | 2008-11-17 | 2009-08-05 | 贵州开磷（集团）有限责任公司 | Gypsum standardized brick curing kiln door |
| CN102030514A (en) * | 2010-11-11 | 2011-04-27 | 侯力平 | Preparation method of purple ceramic |
| CN202865126U (en) * | 2012-08-22 | 2013-04-10 | 湖南省冶金规划设计院 | Dual-layer kiln crown sealing device of lime shaft kiln |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108484101A (en) * | 2018-04-18 | 2018-09-04 | 福建省东丰阁文化发展有限公司 | A kind of imperial kiln manufacture craft of gas burning |
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| CN104163581B (en) | 2017-12-15 |
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