CN110631360A - Tunnel kiln furnace with secondary flue gas reburning function and secondary flue gas reburning method - Google Patents
Tunnel kiln furnace with secondary flue gas reburning function and secondary flue gas reburning method Download PDFInfo
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- CN110631360A CN110631360A CN201911014622.9A CN201911014622A CN110631360A CN 110631360 A CN110631360 A CN 110631360A CN 201911014622 A CN201911014622 A CN 201911014622A CN 110631360 A CN110631360 A CN 110631360A
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- air
- flue gas
- channel
- room
- centrifugal fan
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a structure of a tunnel kiln furnace for secondary reburning of flue gas and a method for secondary reburning of flue gas.A first air cabinet for air inlet is installed in a drying room of the tunnel kiln furnace, the first air cabinet is connected to a first centrifugal fan, the first centrifugal fan is connected with a first air channel for air outlet, the first air channel is distributed on channels arranged at two sides of a simple room, and an air outlet of the first air channel is aligned to a brick pile of the simple room; the second air cabinet used for air inlet is installed on the upper portion of the simple room, the second air cabinet is connected to a second centrifugal fan, the second centrifugal fan is connected with a second air channel used for air outlet, and the second air channel is arranged on two sides of the roasting channel in the low-temperature section of the roasting channel. The invention fully utilizes the waste heat of the finished brick, uses the waste heat to bake the flue gas discharged from the drying room, and injects the flue gas of dry hot gas into the baking channel, thereby not cooling the baking channel, achieving the quick baking of the baking channel and the quick discharging of the finished brick, and effectively preventing the problems of high coal consumption, poor product quality, low yield and high oxygen content.
Description
Technical Field
The invention relates to the technical field of tunnel kilns, in particular to a tunnel kiln furnace for secondary flue gas reburning and a secondary flue gas reburning method.
Background
The tunnel kiln is a modern continuous sintering thermal equipment, and is widely used for the roasting production of non-metal products such as ceramics, bricks and tiles due to the continuous production, short period, large yield and high quality. The production and roasting of the tunnel kiln generally comprise a tunnel kiln body, equipment and a kiln car. However, the problems of high coal consumption, poor product quality, low yield and high oxygen content always exist in the process of production and roasting of the design scheme of the tunnel kiln at present.
Disclosure of Invention
The invention aims to solve the problems and provides a tunnel kiln furnace with secondary flue gas reburning and a secondary flue gas reburning method, which can prevent the phenomena of high coal consumption, poor product quality, low yield and high oxygen content, and simultaneously have relatively simple structure and low manufacturing cost.
The invention is realized in this way, a tunnel kiln furnace of secondary reburning of flue gas, it mainly by baking the room, roasting way and simple and easy room, the simple and easy room sets up the channel on both sides, the simple and easy room stores the finished brick fired and conveyed by roasting way; a first air cabinet for air inlet is arranged in the drying room, the first air cabinet is connected to a first centrifugal fan, the first centrifugal fan is connected with a first air duct for air outlet, the first air duct is distributed on channels arranged on two sides of the simple room, and air outlets of the first air duct are aligned to brick piles of the simple room; and a second air cabinet for air inlet is arranged on the upper part of the simple room, the second air cabinet is connected to a second centrifugal fan, the second centrifugal fan is connected with a second air duct for air outlet, and the second air duct is arranged on two sides of the roasting duct in the low-temperature section of the roasting duct.
Further, the tunnel kiln furnace for secondary flue gas reburning is characterized in that the first centrifugal fan is arranged at the top of the simple room.
Further, the tunnel kiln furnace for secondary flue gas reburning is characterized in that the second centrifugal fan is arranged at the top of the roasting channel.
The tunnel kiln furnace for secondary reburning of the flue gas is characterized in that the secondary reburning method of the flue gas comprises the following steps: 2 centrifugal fans are adopted, partial smoke of the drying room is sent to the simple room of the finished product brick by the centrifugal fans, the smoke is pressed into channels on two sides of the simple room and enters the finished product brick, and partial water in the smoke passes through the finished product brick and is absorbed by the finished product brick soared by hot gas, so that the finished product brick is cooled, and a loading and unloading worker can not work in a hot environment; the flue gas dried by absorbing moisture leaves the simple room through a centrifugal fan and is pressed into the tail part of the roasting channel; smoke pressed by the centrifugal fan enables the roasting channel to increase oxygen strongly, and the high-temperature section is pulled from the tail of the kiln, so that the high-temperature section is not lack of oxygen during roasting, and internal combustion coal of a green brick is ensured to be fully combusted; finally, the content of oxygen in the flue gas discharged by the drying room is greatly reduced, so that the environmental protection requirement is met.
The invention fully utilizes the waste heat of the finished brick, uses the waste heat to bake the flue gas discharged from the baking room, accelerates the drying time of the flue gas, enables the flue gas to be heated and heated rapidly, and injects the flue gas of dry hot gas into the baking channel, thereby not cooling the baking channel, and entering the baking channel for rapid combustion, so that the coal consumption is less, the product quality is good, the yield is high, and the oxygen content is less. The structure is relatively simple, the manufacturing cost is low, and the popularization and the use are convenient.
The invention has the advantages that the waste heat of the finished brick is fully utilized, the waste heat is used for baking the flue gas discharged from the drying room, the drying speed of the flue gas is accelerated, the flue gas is heated and heated rapidly, the flue gas of dry hot gas is injected into the roasting channel, so that the roasting channel is not cooled, the flue gas enters the roasting channel to burn rapidly, the flue gas is quickly burnt by the roasting channel through the installation position of the fan, and the finished brick is quickly discharged, so the problems of high coal consumption, poor product quality, low yield and high oxygen content are effectively prevented, and meanwhile, the structure is relatively simple, the manufacturing cost is low, and the popularization and the use are convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a drying room, 2, a roasting channel, 3, a simple room, 4, an upper vehicle channel, 5, a first air cabinet, 6, a first centrifugal fan, 7, a first air channel, 8, a second air cabinet, 9, a second centrifugal fan, 10, a second air channel, 11 and a roasting channel high-temperature section.
Detailed Description
As shown in figure 1, the tunnel kiln furnace for secondary flue gas reburning mainly comprises a drying room 1, a roasting channel 2 and a simple room 3, wherein cooled finished bricks are transported out from the simple room 3 from an upper lane 4, channels are arranged on two sides of the simple room 3, and the simple room stores the finished bricks which are well roasted and conveyed by the roasting channel 2. Install the first wind cabinet 5 that is used for the air inlet in stoving room 1, first wind cabinet 5 be connected to first centrifugal fan 6, first centrifugal fan 6 reconnection is used for the first wind channel 7 of air-out, first wind channel 7 distribute on the passageway that simple and easy room 3 both sides set up and its air outlet aims at the brick heap of simple and easy room 3 (the trend of wind path is shown as the arrow in fig. 1). A second air cabinet 8 for air intake is installed on the upper portion of the simple room 3, the second air cabinet 8 is connected to a second centrifugal fan 9, the second centrifugal fan 9 is further connected to a second air duct 10 for air outlet, and the second air duct 10 is arranged on two sides (the air duct direction is as shown by an arrow in fig. 1) in a roasting duct low-temperature section 11 of the roasting duct 2.
The first centrifugal fan 6 is arranged at the top of the simple room 3.
The second centrifugal fan 8 is arranged at the top of the roasting channel 2.
The invention relates to a secondary reburning method of flue gas of a tunnel kiln furnace, which comprises the following steps: 2 centrifugal fans (a first centrifugal fan 6 and a second centrifugal fan 9) are adopted, partial smoke of the drying room 1 is sent to the simple room 3 of finished bricks by the centrifugal fans, the smoke is pressed into channels on two sides of the simple room 3 to enter the finished bricks, partial water in the smoke passes through the finished bricks and is absorbed by the finished bricks soared by hot air, and therefore the finished bricks are cooled, and loading and unloading workers do not work in a hot environment; the flue gas dried by absorbing moisture leaves the simple room through a centrifugal fan and is pressed into the tail part of the roasting channel 2; smoke pressed in by the centrifugal fan enables the roasting channel 2 to increase oxygen strongly, and the high-temperature section is pulled from the tail of the kiln, so that the high-temperature section is not lack of oxygen during roasting, and internal combustion coal of a green brick is ensured to be fully combusted; finally, the content of oxygen in the flue gas discharged by the drying room is greatly reduced, so that the environmental protection requirement is met.
The invention fully utilizes the waste heat of the finished brick, uses the waste heat to bake the flue gas discharged from the baking room, accelerates the drying time of the flue gas, enables the flue gas to be heated and heated rapidly, and injects the flue gas of dry hot gas into the baking channel, thereby not cooling the baking channel, and entering the baking channel for rapid combustion, so that the coal consumption is less, the product quality is good, the yield is high, and the oxygen content is less. The structure is relatively simple, the manufacturing cost is low, and the popularization and the use are convenient.
The utility model relates to a design of flue gas secondary reburning of tunnel kiln stove, it is more reasonable than traditional design theory, more advanced, it is more convenient to operate, the design scheme of the invention make full use of finished brick waste heat, flue gas that the room comes out is baked with the waste heat, flue gas drying time is accelerated, make the flue gas heat rapidly and heat up, it is the flue gas of dry steam to pour into the calcination way into to do not make the calcination way cool down, get into the calcination way and burn fast, so the coal consumption is few, product quality is good, output is high, contain oxygen fewly.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (4)
1. A tunnel kiln furnace for secondary reburning of flue gas mainly comprises a drying room, a roasting channel and a simple room, wherein channels are arranged on two sides of the simple room, and finished bricks which are well roasted and conveyed by the roasting channel are stored in the simple room; a first air cabinet for air inlet is arranged in the drying room, the first air cabinet is connected to a first centrifugal fan, the first centrifugal fan is connected with a first air duct for air outlet, the first air duct is distributed on channels arranged on two sides of the simple room, and air outlets of the first air duct are aligned to brick piles of the simple room; and a second air cabinet for air inlet is arranged on the upper part of the simple room, the second air cabinet is connected to a second centrifugal fan, the second centrifugal fan is connected with a second air channel for air outlet, and the second air channel is arranged on two sides of the low-temperature section of the roasting channel.
2. The tunnel kiln furnace for secondary flue gas reburning as claimed in claim 1, wherein the first centrifugal fan is arranged on the top of the simple room.
3. The tunnel kiln furnace for secondary flue gas reburning as claimed in claim 1, wherein the second centrifugal fan is disposed on top of the roasting channel.
4. The secondary flue gas reburning method for the tunnel kiln furnace of the secondary flue gas reburning as claimed in claim 1, wherein the method comprises the following steps: 2 centrifugal fans are adopted, partial smoke of the drying room is sent to a simple room of a finished brick by the centrifugal fans, the smoke is pressed into channels on two sides of the simple room and enters the finished brick, and partial water in the smoke passes through the finished brick and is absorbed by the finished brick soared by hot gas, so that the finished brick is cooled, and a loading and unloading worker can not work in a hot environment; the flue gas dried by absorbing moisture leaves the simple room through a centrifugal fan and is pressed into the tail part of the roasting channel; smoke pressed by the centrifugal fan enables the roasting channel to increase oxygen strongly, and the high-temperature section is pulled from the tail of the kiln, so that the high-temperature section is not lack of oxygen during roasting, and internal combustion coal of a green brick is ensured to be fully combusted; finally, the content of oxygen in the flue gas discharged by the drying room is greatly reduced, so that the environmental protection requirement is met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014622.9A CN110631360A (en) | 2019-10-24 | 2019-10-24 | Tunnel kiln furnace with secondary flue gas reburning function and secondary flue gas reburning method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911014622.9A CN110631360A (en) | 2019-10-24 | 2019-10-24 | Tunnel kiln furnace with secondary flue gas reburning function and secondary flue gas reburning method |
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| CN110631360A true CN110631360A (en) | 2019-12-31 |
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| CN201911014622.9A Pending CN110631360A (en) | 2019-10-24 | 2019-10-24 | Tunnel kiln furnace with secondary flue gas reburning function and secondary flue gas reburning method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310320A (en) * | 2021-05-27 | 2021-08-27 | 民勤县再源之星节能环保科技开发有限公司 | Brick and tile kiln flue gas closed cycle utilizes system |
Citations (10)
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| CN2511929Y (en) * | 2001-12-30 | 2002-09-18 | 周卫 | Kiln with waste heat recoverer |
| CN1892158A (en) * | 2006-05-01 | 2007-01-10 | 黄永安 | After-heat self-drying type one-time stacking-burning annular kiln |
| JP2007024447A (en) * | 2005-07-20 | 2007-02-01 | Noritz Corp | Heating and drying device and heating and drying system using the heating and drying device |
| CN201607113U (en) * | 2009-12-23 | 2010-10-13 | 淄博地永耐火材料有限公司 | Device for utilizing waste heat of burnt bricks of tunnel kiln to generate electricity |
| CN201665656U (en) * | 2010-04-21 | 2010-12-08 | 姜文平 | Environment-friendly and energy-efficient carbonized formed coke tunnel kiln |
| CN103148700A (en) * | 2013-03-12 | 2013-06-12 | 泉州市燃气有限公司 | Energy-saving roller kiln and use method thereof |
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| CN106766877A (en) * | 2017-02-09 | 2017-05-31 | 微山县大卫新型建材有限公司 | A kind of tunnel kiln smoke-gas environment-protective circulating processing system |
| CN109237939A (en) * | 2018-10-09 | 2019-01-18 | 常州桂城环保建材股份有限公司 | A kind of flue gas, waste heat are kept completely separate energy conservation and environmental protection and bake bricks tunnel oven |
| CN110303591A (en) * | 2019-08-05 | 2019-10-08 | 陕西恒兴泰建材科技有限公司 | A kind of permeable earthenware brick of sintering of dry and wet multiplexing prepares assembly line and preparation method |
-
2019
- 2019-10-24 CN CN201911014622.9A patent/CN110631360A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2511929Y (en) * | 2001-12-30 | 2002-09-18 | 周卫 | Kiln with waste heat recoverer |
| JP2007024447A (en) * | 2005-07-20 | 2007-02-01 | Noritz Corp | Heating and drying device and heating and drying system using the heating and drying device |
| CN1892158A (en) * | 2006-05-01 | 2007-01-10 | 黄永安 | After-heat self-drying type one-time stacking-burning annular kiln |
| CN201607113U (en) * | 2009-12-23 | 2010-10-13 | 淄博地永耐火材料有限公司 | Device for utilizing waste heat of burnt bricks of tunnel kiln to generate electricity |
| CN201665656U (en) * | 2010-04-21 | 2010-12-08 | 姜文平 | Environment-friendly and energy-efficient carbonized formed coke tunnel kiln |
| CN103148700A (en) * | 2013-03-12 | 2013-06-12 | 泉州市燃气有限公司 | Energy-saving roller kiln and use method thereof |
| CN203190791U (en) * | 2013-03-12 | 2013-09-11 | 泉州市燃气有限公司 | Energy-saving roller kiln |
| CN106766877A (en) * | 2017-02-09 | 2017-05-31 | 微山县大卫新型建材有限公司 | A kind of tunnel kiln smoke-gas environment-protective circulating processing system |
| CN109237939A (en) * | 2018-10-09 | 2019-01-18 | 常州桂城环保建材股份有限公司 | A kind of flue gas, waste heat are kept completely separate energy conservation and environmental protection and bake bricks tunnel oven |
| CN110303591A (en) * | 2019-08-05 | 2019-10-08 | 陕西恒兴泰建材科技有限公司 | A kind of permeable earthenware brick of sintering of dry and wet multiplexing prepares assembly line and preparation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310320A (en) * | 2021-05-27 | 2021-08-27 | 民勤县再源之星节能环保科技开发有限公司 | Brick and tile kiln flue gas closed cycle utilizes system |
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