CN116535113B - Method for preventing dust deposition in middle channel of double-chamber kiln - Google Patents
Method for preventing dust deposition in middle channel of double-chamber kiln Download PDFInfo
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- CN116535113B CN116535113B CN202310581226.4A CN202310581226A CN116535113B CN 116535113 B CN116535113 B CN 116535113B CN 202310581226 A CN202310581226 A CN 202310581226A CN 116535113 B CN116535113 B CN 116535113B
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- 239000000428 dust Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008021 deposition Effects 0.000 title claims description 11
- 238000001816 cooling Methods 0.000 claims abstract description 50
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000009825 accumulation Methods 0.000 claims abstract description 28
- 239000003546 flue gas Substances 0.000 claims abstract description 26
- 238000002485 combustion reaction Methods 0.000 claims abstract description 24
- 238000001354 calcination Methods 0.000 claims abstract description 17
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a method for preventing dust accumulation in a middle channel of a double-hearth kiln, which comprises an A kiln hearth and a B kiln hearth which are connected through a middle channel, a spray gun, a discharge platform, a discharge hopper, a discharge flashboard, a combustion-supporting fan, a combustion-supporting pipeline, a combustion-supporting air release valve, a combustion-supporting air reversing valve, a chimney reversing valve, a flue gas dust remover, a cooling fan, a cooling air release valve, a cooling air electric valve, a middle channel air pipe and a carbon monoxide measuring device; further comprises: the unloading times of the heat accumulation chamber are at least 20 times greater than that of the calcination chamber; ensuring the granularity of the raw materials in the kiln to be 40-80mm and more than 80 percent, and washing the raw materials with water; the opening of the combustion chamber cooling air electric valve is at least 40% smaller than that of the heat accumulating chamber cooling air electric valve; the middle channel air pipe supplies air to clean the middle channel; and (3) reducing the combustion-supporting air coefficient, and controlling the average temperature of the discharging platform to be within 200 ℃. The invention can solve the problems of serious dust accumulation in the middle channel of the existing double-chamber kiln, blockage and influence on the product quality.
Description
Technical Field
The invention relates to the technical field of steel manufacturing and equipment thereof, in particular to a method for preventing dust accumulation in a middle channel of a double-hearth kiln.
Background
The double-hearth kiln is one of advanced shaft kilns for calcining lime, and has the advantages of high automation degree, small occupied area, simple interface operation and advanced process technology. The good parallel flow heat accumulation principle of the double-chamber kiln ensures the full combustion of coal gas.
The double-hearth kiln is provided with two kiln barrels, an A kiln hearth 6 and a B kiln hearth 9 which are connected through a middle channel 11, spray guns 4 are arranged at the inner upper parts of the A kiln hearth and the B kiln hearth, a discharge hopper 16 is arranged below a discharge platform 13 at the lower parts of the A kiln hearth and the B kiln hearth, a discharge gate plate 12 is arranged at the bottom of the discharge hopper 16, a combustion-supporting fan 17 is connected with the rear branch of a combustion-supporting air release valve 1 through a combustion-supporting pipeline 2, two combustion-supporting air reversing valves 3 are respectively connected with the tops of the A kiln hearth and the B kiln hearth, the two pipelines connected with the two combustion-supporting air reversing valves 3 are combined and then are connected with a flue gas dust remover 15 through a chimney reversing valve 14, and a cooling fan 18 is connected with a discharge hopper 16 at the bottom of the A kiln hearth and the B kiln hearth through a cooling air electric valve 19 respectively, as shown in figure 1.
When one of the two kiln chambers of the double-chamber kiln is calcined, the other chamber is in a heat storage state. In the kiln chamber 6 of the combustion chamber A, fuel is mixed with combustion-supporting air 5 entering the kiln through a spray gun 4 at a spray gun head for combustion, generated combustion flue gas 8 preheats stone in a heat accumulation chamber through an intermediate channel 11, and the preheated combustion flue gas 8 enters a flue gas dust remover 15 through a combustion-supporting air reversing valve 3 and a chimney reversing valve 14 and is discharged into the atmosphere. And cooling air 7 is blown into the cooling fan at the bottom of the kiln, enters from the bottom of the kiln through the kiln cooling hood, and cools the finished product discharged from the kiln. The cooling air 7 of the combustion chamber A kiln chamber 6 cools the combustion chamber finished product, enters the heat accumulation chamber B kiln chamber 9 through the middle channel 11, and enters the flue gas dust remover 15 along with the flue gas from bottom to top together with the cooling air 7 of the heat accumulation chamber.
During normal combustion operation, high-temperature flue gas generated after the Maiz calcination and preheated cooling air 7 of the calcining zone flow through the middle channel 11 to realize heat accumulation of the heat accumulation chamber B kiln chamber 9. During production, limestone in the kiln is decomposed to produce a large amount of lime powder. The dust and the gravels pass through the middle channel 11 and the annular channel (the periphery of the middle channel) along the flue gas under the action of high-temperature air flow, and then enter the heat accumulation chamber. As the kiln pressure is reduced to zero during the kiln reversing or stopping, dust impurities accumulate and settle or adhere to the bottom of the platform of the intermediate channel 11 under the action of gravity.
The production process is influenced by the blockage of the middle channel of the kiln, the quality of kiln products is influenced by the fact that the quality of the products is off-set, the set productivity is low due to insufficient heat exchange, and the like, and only the kiln can be stopped for emptying, overhauling and cleaning, so that the production efficiency of the kiln is not beneficial to being exerted.
It is therefore possible to avoid the occurrence of clogging of the intermediate passage by improving the execution of a series of process operations.
Disclosure of Invention
The invention aims to solve the problem of blocking caused by serious dust accumulation in the middle channel of the existing double-chamber kiln and influence the quality of products.
In order to solve the problems, the technical scheme of the invention is as follows: the method for preventing dust accumulation in the middle channel of the double-hearth kiln comprises an A kiln hearth and a B kiln hearth which are connected through a middle channel, wherein spray guns are arranged at the upper parts in the A kiln hearth and the B kiln hearth, discharge hoppers are arranged below discharge platforms at the lower parts of the A kiln hearth and the B kiln hearth, discharge flashboards are arranged at the bottoms of the discharge hoppers, a combustion-supporting fan is connected with two branches of a combustion-supporting air release valve through a combustion-supporting pipeline and is respectively connected with two combustion-supporting air reversing valves, the two combustion-supporting air reversing valves are respectively connected with the tops of the A kiln hearth and the B kiln hearth, the two pipelines connected with the combustion-supporting air reversing valves are combined and then are connected with a flue gas dust remover through a chimney reversing valve, a cooling fan is connected with a discharge hopper at the bottoms of the A kiln hearth and the B kiln hearth through a cooling air electric valve, an intermediate channel air pipe extends out of the combustion-supporting pipeline and is connected to the middle channel, and a carbon monoxide measuring device is arranged on the pipeline between the chimney reversing valve and the flue gas dust remover;
The method also comprises the following steps:
When the kiln chamber B is a heat accumulation chamber and the kiln chamber A is a calcination chamber, the unloading times of the heat accumulation chamber are at least 20 times greater than those of the calcination chamber; ensuring the granularity of the raw materials in the kiln to be 40-80mm and more than 80 percent, and washing the raw materials with water; the opening of the combustion chamber cooling air electric valve is at least 40% smaller than that of the heat accumulating chamber cooling air electric valve; the middle channel air pipe supplies air to clean the middle channel; detecting the carbon monoxide concentration of the flue gas by using a carbon monoxide measuring device, and reducing the combustion-supporting air coefficient; the average temperature of the discharging platform is controlled within 200 ℃.
Among the above technical schemes, more specific schemes may be: air cannons are arranged on two sides of the middle channel; after the combustion period of the kiln is finished, the air cannon blows the middle channel once.
Further: the combustion-supporting fan, the combustion-supporting air release valve, the combustion-supporting air reversing valve, the chimney reversing valve, the flue gas dust remover, the cooling fan, the cooling air release valve and the cooling air electric valve are all connected with a control unit.
Further: the air cannon and the carbon monoxide measuring device are connected with the control unit.
Further: the control unit is a PLC.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
The method for preventing the dust deposition of the middle channel of the double-hearth kiln can furthest reduce the occurrence of channel blockage by arranging the carbon monoxide measuring device on the flue gas pipeline, adjusting the discharging times and the opening of the cooling air valve; after the reversing period is over, the middle channel air cannon sprays the partial area of the middle channel, so that dust is prevented from accumulating or adhering to the surface of the middle channel air cannon; introducing a pipe from a combustion-supporting fan, introducing the pipe into an intermediate channel, and blowing and cleaning the intermediate channel to enable the channel to be in a ventilation state, so that dust deposition of the intermediate channel is avoided; the opening of the cooling air valve and the discharging platform of the double-hearth kiln are reasonably controlled according to the conditions of the heat accumulation hearth and the calcination hearth, and the action program of the air cannon is reduced.
Drawings
FIG. 1 is a front view of the prior art;
FIG. 2 is a front view of an embodiment of the present invention;
FIG. 3 is a block diagram of an intermediate channel and air cannon in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of the structural process of an embodiment of the present invention;
The marks in the figure are as follows: the combustion air discharge valve 1, the combustion pipeline 2, the combustion air reversing valve 3, the spray gun 4, the combustion air 5, the kiln chamber A6, the cooling air 7, the combustion flue gas 8, the kiln chamber B9, the cooling air discharge valve 10, the middle channel 11, the discharge flashboard 12, the discharge platform 13, the chimney reversing valve 14, the flue gas dust remover 15, the discharge hopper 16, the combustion fan 17, the cooling fan 18, the cooling air electric valve 19, the control unit 20, the carbon monoxide measuring device 21, the middle channel air pipe 22, the air cannon 23, the thermocouple 24 and the ash discharge plate 25.
Detailed Description
Embodiments of the invention are described in further detail below with reference to the attached drawing figures:
the method for preventing dust accumulation in the middle channel of the double-hearth kiln comprises a double-hearth kiln shown in fig. 2-4, wherein two kiln barrels are arranged, an A kiln hearth 6 and a B kiln hearth 9 are connected through a middle channel 11, spray guns 4 are arranged at the inner upper parts of the A kiln hearth and the B kiln hearth, discharge hoppers 16 are arranged below discharge platforms 13 at the lower parts of the A kiln hearth and the B kiln hearth, discharge flashboards 12 are arranged at the bottoms of the discharge hoppers 16, combustion fans 17 are connected with the rear branches of combustion air release valves 1 through combustion-supporting pipelines 2, two combustion air reversing valves 3 are respectively connected with the tops of the A kiln hearth and the B kiln hearth, the combined pipelines connected with the two combustion air reversing valves 3 are connected with a flue gas dust remover 15 through chimney reversing valves 14, and cooling fans 18 are respectively connected with the discharge hoppers 16 at the bottoms of the A kiln hearth and the B kiln hearth through cooling air electric valves 19 through cool air pipelines.
A middle channel air pipe 22 extends out of the combustion-supporting pipeline 2 connected with the combustion-supporting fan 17 and is connected to the middle channel 11, the middle channel 11 is led from the combustion-supporting fan 17, and air is blown and cleaned to the middle channel, so that the channel is in a ventilation state, and dust deposition in the middle channel is avoided; the carbon monoxide measuring device 21 is arranged on the pipeline between the chimney reversing valve 14 and the flue gas dust remover 15, and the carbon monoxide measuring device 21 is arranged on the flue gas pipeline, so that the occurrence of channel blockage can be reduced to the greatest extent by adjusting the discharging times and the opening of the cooling air valve; air cannons 23 are arranged on two sides of the middle channel 11, and after the reversing period is finished, the air cannons 23 of the middle channel are used for blowing partial areas of the middle channel 11, so that dust is prevented from accumulating or adhering to the surfaces of the middle channel 11.
The combustion-supporting fan 17, the combustion-supporting air release valve 1, the combustion-supporting air reversing valve 3, the chimney reversing valve 14, the flue gas dust remover 15, the cooling fan 18, the cooling air release valve 10 and the cooling air electric valve 19 of the double-hearth kiln are all connected with a control unit 20, the air cannon 23 and the carbon monoxide measuring device 21 are connected with the control unit 20, and the control unit is a PLC.
The double-hearth kiln comprises the following steps:
When the kiln chamber B is a heat accumulation chamber and the kiln chamber A is a calcination chamber, the unloading times of the heat accumulation chamber are at least 20 times greater than those of the calcination chamber. The action times of the ash discharging plate 25 of the double-hearth kiln discharging platform are adjusted, the heat accumulation hearth discharging times are at least 20 times (such as 20 times of heat accumulation hearth discharging and 40 times of calcining hearth discharging) larger than the calcining hearth discharging times, the purpose is to reduce the discharging times of the calcining hearth as much as possible, more dust is generated due to ash discharging of the discharging platform, and cooling air entrains the dust to enter the middle channel.
Setting an intermediate channel air cannon action program, and after the combustion period of the kiln is finished, the air cannon 23 acts and blows the intermediate channel 11 once, so that dust accumulation of the intermediate channel 11 is avoided.
The granularity of the raw materials in the kiln is ensured to be 40-80mm with the proportion of more than 80%, and stone materials in the kiln are washed.
The opening degree of the cooling air electric valve 19 is controlled, the opening degree of the combustion chamber cooling air electric valve is ensured to be at least 40 percent smaller than the opening degree of the heat accumulation chamber cooling air electric valve (such as 80 percent of the opening degree of the heat accumulation chamber cooling air electric valve and 40 percent of the opening degree of the calcination chamber cooling air electric valve), and the air quantity introduced into the middle channel is reduced by the method.
The intermediate duct 22 blows air to clean the intermediate duct 11 to keep the duct in a ventilated state.
The carbon monoxide concentration of the flue gas is detected by a carbon monoxide measuring device 21, the combustion-supporting air coefficient is reasonably adjusted, and the fuel is ensured to be fully combusted; by adjusting the combustion-supporting air coefficient as low as possible, the air quantity entering the kiln is reduced.
The average temperature of the thermocouple 24 on the ash discharge plate of the unloading platform is controlled within 200 ℃, so that the cooling air coefficient is reduced, and the cooling air quantity entering the kiln is controlled.
The method for preventing the dust deposition of the middle channel of the double-hearth kiln can furthest reduce the occurrence of channel blockage by arranging the carbon monoxide measuring device on the flue gas pipeline, adjusting the discharging times and the opening of the cooling air valve; after the reversing period is over, the middle channel air cannon sprays the partial area of the middle channel, so that dust is prevented from accumulating or adhering to the surface of the middle channel air cannon; introducing a pipe from a combustion-supporting fan, introducing the pipe into an intermediate channel, and blowing and cleaning the intermediate channel to enable the channel to be in a ventilation state, so that dust deposition of the intermediate channel is avoided; the opening of the cooling air valve and the discharging platform of the double-hearth kiln are reasonably controlled according to the conditions of the heat accumulation hearth and the calcination hearth, and the action program of the air cannon is reduced.
Claims (4)
1. A method for preventing dust deposition in a middle channel of a double-hearth kiln is characterized by comprising the following steps of: the device comprises an A kiln chamber and a B kiln chamber which are connected through an intermediate channel, wherein spray guns are arranged at the upper parts in the A kiln chamber and the B kiln chamber, discharge hoppers are arranged below discharge platforms at the lower parts of the A kiln chamber and the B kiln chamber, discharge flashboards are arranged at the bottoms of the discharge hoppers, a combustion-supporting fan is connected with two sections of rear branches of combustion-supporting air release valves through combustion-supporting pipelines and is respectively connected with two combustion-supporting air reversing valves, the two combustion-supporting air reversing valves are respectively connected with the tops of the A kiln chamber and the B kiln chamber, the two pipelines connected with the combustion-supporting air reversing valves are combined and then are connected with a flue gas dust remover through chimney reversing valves, a cooling fan is connected with the discharge hoppers at the bottoms of the A kiln chamber and the B kiln chamber through cooling air electric valves and then is connected with the discharge hoppers at the bottoms of the B kiln chamber through cooling air electric valves, an intermediate channel air pipe extends out from the combustion-supporting pipelines and is connected to the intermediate channel, and a carbon monoxide measuring device is arranged on the pipeline between the chimney reversing valves and the flue gas dust remover;
The method also comprises the following steps:
When the kiln chamber B is a heat accumulation chamber and the kiln chamber A is a calcination chamber, the unloading times of the heat accumulation chamber are at least 20 times greater than those of the calcination chamber; ensuring the granularity of the raw materials in the kiln to be 40-80mm and more than 80 percent, and washing the raw materials with water; the opening of the calcination hearth cooling air electric valve is at least 40% smaller than that of the heat accumulation hearth cooling air electric valve; the middle channel air pipe supplies air to clean the middle channel; detecting the carbon monoxide concentration of the flue gas by using a carbon monoxide measuring device, and reducing the combustion-supporting air coefficient; controlling the average temperature of the discharging platform to be within 200 ℃;
Air cannons are arranged on two sides of the middle channel; after the combustion period of the kiln is finished, the air cannon blows the middle channel once.
2. The method for preventing ash deposition in the middle channel of the double-hearth kiln according to claim 1, wherein: the combustion-supporting fan, the combustion-supporting air release valve, the combustion-supporting air reversing valve, the chimney reversing valve, the flue gas dust remover, the cooling fan, the cooling air release valve and the cooling air electric valve are all connected with a control unit.
3. A method for preventing ash deposition in a double-hearth kiln intermediate channel according to claim 1 or 2, characterized by: the air cannon and the carbon monoxide measuring device are connected with the control unit.
4. A method of preventing ash deposition in a double-hearth kiln intermediate tunnel according to claim 3, wherein: the control unit is a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310581226.4A CN116535113B (en) | 2023-05-23 | 2023-05-23 | Method for preventing dust deposition in middle channel of double-chamber kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310581226.4A CN116535113B (en) | 2023-05-23 | 2023-05-23 | Method for preventing dust deposition in middle channel of double-chamber kiln |
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| Publication Number | Publication Date |
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| CN116535113A CN116535113A (en) | 2023-08-04 |
| CN116535113B true CN116535113B (en) | 2024-08-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094058A (en) * | 2020-09-17 | 2020-12-18 | 石家庄新华能源环保科技股份有限公司 | Double-chamber kiln reconstructed from shaft kiln |
| CN112146447A (en) * | 2020-09-15 | 2020-12-29 | 广西柳州钢铁集团有限公司 | Method for preventing ash spraying of air release valve of double-chamber kiln |
| CN113932601A (en) * | 2021-09-01 | 2022-01-14 | 广西柳钢新材料科技有限公司 | Double-chamber kiln cooling air control distribution method |
| CN113979615A (en) * | 2021-09-08 | 2022-01-28 | 山东郓城正华玻璃科技有限公司 | Combustion control system and method for glass kiln |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050015503A (en) * | 2003-08-06 | 2005-02-21 | 주식회사 포스코 | A method for cooling burn lime in shaft kiln |
| EP1918637A1 (en) * | 2006-10-27 | 2008-05-07 | Karl Stefan Riener | Regulation of a biomass furnace |
| CN201610412U (en) * | 2010-01-07 | 2010-10-20 | 陈淑杰 | Controllable efficient energy-saving safe environment-friendly lime kiln |
| FI126564B (en) * | 2011-02-28 | 2017-02-15 | Andritz Oy | Method and apparatus for burning lime slurry |
| CN202519163U (en) * | 2011-08-24 | 2012-11-07 | 张超 | Novel energy-saving environment-friendly secondary ventilated vertical lime kiln |
| KR101360765B1 (en) * | 2012-04-03 | 2014-02-12 | (주)포스코켐텍 | Method for removing dust in baking furnace of shaft kiln |
| CN103601376B (en) * | 2013-11-18 | 2015-04-15 | 中冶焦耐工程技术有限公司 | Sleeve type double-hearth shaft kiln |
| CN108800153B (en) * | 2016-08-01 | 2019-09-17 | 北京北控环保工程技术有限公司 | Dangerous waste object burning process |
| CN206428159U (en) * | 2016-12-23 | 2017-08-22 | 石家庄圣宏达热能工程技术股份有限公司 | A kind of new type auto cleaning formula lime shaft kiln |
| CN209978594U (en) * | 2019-03-22 | 2020-01-21 | 北京科太亚洲生态科技股份有限公司 | Utilize rotary kiln to preheat device that raw material disposes discarded object |
| CN110260448B (en) * | 2019-06-26 | 2024-05-10 | 重庆海润节能技术股份有限公司 | Self-cleaning wind distributor for inner wall of pipeline and self-cleaning method |
| CN113582560B (en) * | 2021-07-10 | 2022-08-02 | 石家庄新华能源环保科技股份有限公司 | Method for calcining limestone by using low-calorific-value fuel in double-hearth kiln |
| CN216404224U (en) * | 2021-11-26 | 2022-04-29 | 广西柳州钢铁集团有限公司 | Double-chamber kiln channel ventilation device |
| CN114353505B (en) * | 2021-12-15 | 2023-11-21 | 广西柳州钢铁集团有限公司 | Environment-friendly high-efficiency double-hearth kiln control method |
| CN216584767U (en) * | 2022-01-27 | 2022-05-24 | 中冶长天国际工程有限责任公司 | Cooling airflow distributor for lime kiln and double-chamber lime kiln |
| CN114276030A (en) * | 2022-02-08 | 2022-04-05 | 舞钢实业发展有限责任公司 | Kiln channel dredging device of double-chamber lime kiln and using method thereof |
| CN114739160B (en) * | 2022-03-29 | 2024-01-16 | 广西柳钢新材料科技有限公司 | Method for reducing nitrogen consumption of gas double-chamber kiln |
| CN218480922U (en) * | 2022-10-20 | 2023-02-14 | 广西柳钢新材料科技有限公司 | Double-chamber kiln suspension cylinder fan channel ash removal device |
-
2023
- 2023-05-23 CN CN202310581226.4A patent/CN116535113B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146447A (en) * | 2020-09-15 | 2020-12-29 | 广西柳州钢铁集团有限公司 | Method for preventing ash spraying of air release valve of double-chamber kiln |
| CN112094058A (en) * | 2020-09-17 | 2020-12-18 | 石家庄新华能源环保科技股份有限公司 | Double-chamber kiln reconstructed from shaft kiln |
| CN113932601A (en) * | 2021-09-01 | 2022-01-14 | 广西柳钢新材料科技有限公司 | Double-chamber kiln cooling air control distribution method |
| CN113979615A (en) * | 2021-09-08 | 2022-01-28 | 山东郓城正华玻璃科技有限公司 | Combustion control system and method for glass kiln |
Non-Patent Citations (1)
| Title |
|---|
| 双膛窑耐火材料砌筑施工优化实践;李磊;《耐火与石灰》;20231210;第48卷(第6期);全文 * |
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