CN203668244U - Novel cooling system for double-hearth lime kiln suspension cylinders - Google Patents

Novel cooling system for double-hearth lime kiln suspension cylinders Download PDF

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Publication number
CN203668244U
CN203668244U CN201320596359.0U CN201320596359U CN203668244U CN 203668244 U CN203668244 U CN 203668244U CN 201320596359 U CN201320596359 U CN 201320596359U CN 203668244 U CN203668244 U CN 203668244U
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induced draft
draft fan
pipeline
induced
valve
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Expired - Lifetime
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CN201320596359.0U
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Chinese (zh)
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谢永红
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Shijiazhuang Xinhua Energy Environmental Protection Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/40Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills

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Abstract

The utility model relates to a novel cooling system for double-hearth lime kiln suspension cylinders. Air inlets are mounted on outer annular tubes which surround kiln hearths, air inlet pipes are mounted below the outer annular tubes, and lower ports of the air inlet pipes are connected with cooling suspension cylinders; outlets of the cooling suspension cylinders are connected with air outlet pipes, upper ports of the air outlet pipes are connected with inner annular tubes, and the inner annular tubes surround the kiln hearths and are connected with air inducing pipes; three induced draft fans include a first induced draft fan (7.1), a second induced draft fan (7.2) and a third induced draft fan (7.3), the third induced draft fan (7.3) is a common standby fan of the first induced draft fan (7.1) and the second induced draft fan (7.2), and outlets of the fans are connected with a combustion-supporting air pipeline and an emptying pipeline; one pneumatic quick switching valve is respectively mounted in front of and at the rear of each of the first induced draft fan (7.1) and the second induced draft fan (7.2), two pneumatic quick switching valves are mounted in front of the third induced draft fan (7.3), and one pneumatic quick switching valve is mounted at the rear of the third induced draft fan (7.3); and pipelines of the outlets of the three induced draft fans are gathered to be one main pipeline which is connected with the combustion-supporting air pipeline and the emptying pipeline through a tee joint, one pneumatic quick switching valve is mounted between the tee joint and the combustion-supporting air pipeline, and one pneumatic quick switching valve is mounted on the emptying pipeline. The novel cooling system has the benefits as follows: 1, compared with the original design average temperature, the initial temperature of cooling air for the suspension cylinders is reduced by above 40 DEG C in summer and reduced by above 60 DEG C in winter; 2, the running pipeline of cooling air is shortened by 50%, and the pipeline pressure loss is reduced by 50%; and 3, the better cooling effect is obtained, and the kiln yield cannot be influenced.

Description

Novel double-hearth lime kiln suspension cylinder cooling system
Technical field:
The utility model relates to a kind of double-hearth lime kiln kiln body overhang cylinder cooling system equipment.
Background technology:
Suspension cylinder is the key equipment of MAERZ limestone kiln connecting passage, and this cylinder body is arranged on kiln thorax inside, and in order not make cylinder body heat damage, cylinder interior is by being used recirculated air to carry out cooling.Its system composition structure is: roots blower, by air pressurized, blasts in suspension cylinder, and air carries out cooling to suspension cylinder, and cooled hot blast is drawn by pipeline, emptying or squeeze into second stage employ in combustion air pipeline.The shortcoming of this structure is: system pipeline is long, causes system pressure drop too high, and suspension cylinder cooling air pressure is the vertex in kiln body pressure system, has increased energy consumption; Suspension cylinder cooling air initial temperature is too high, more than reaching 80 degree summer, more than reaching 60 degree winter, has affected cooling effect.Based on above 2 deficiencies, the cooling performance of suspension cylinder can not meet whole production requirements, causes the limestone kiln product that force-landed.
Summary of the invention:
In order to overcome the situation not good when front suspension cylinder cooling performance, the utility model has been designed a kind of novel suspension cylinder cooling structure.This cooling system can not only greatly improve the cooling performance of suspension cylinder, can also be maximized the pressure drop that produces of reduction system, energy-saving and cost-reducing.
The utility model solves this technical problem taked technical scheme:
A kind of novel double-hearth lime kiln suspension cylinder cooling system, blast inlet is arranged on outer endless tube, and outer endless tube is the circle pipeline around kiln thorax, and outer endless tube below is provided with blast pipe, and blast pipe end opening is connected with cooling object suspension cylinder; The outlet of cooling object suspension cylinder is connected with air outlet tube, and the suitable for reading and interior endless tube of air outlet tube is connected, and interior endless tube is the circle pipeline around kiln thorax, and interior endless tube is connected with induced exhaust; Induced draft fan has 3: the first induced draft fan 7.1, the second induced draft fan 7.2, the 3rd induced draft fan 7.3, the first induced draft fan 7.1 connects the induced exhaust of No. 1 thorax, the second induced draft fan 7.2 connects the induced exhaust of No. 2 thoraxes, the 3rd induced draft fan 7.3 is the public stand-by fan of the first induced draft fan 7.1, the second induced draft fan 7.2, and the outlet of blower fan is connected with emptying pipe with combustion air pipeline; The first induced draft fan 7.1,1 pneumatic valve of cutting soon of the each installation in the second induced draft fan 7.2 front and back, be provided with 2 pneumatic valves of cutting soon before the 3rd induced draft fan 7.3 machines, 1 pneumatic valve of cutting is soon installed after machine; It is 1 main pipeline that 3 induced draft fan outlet conduits gather, and this main pipeline is connected with emptying pipe with combustion air pipeline by threeway, and 1 pneumatic valve of cutting is soon installed between threeway and combustion air pipeline, and 1 pneumatic valve of cutting is soon installed on emptying pipe.
Blast inlet has 11, and each blast inlet place is provided with filter screen.
Blast pipe has 11, and the adjustable manual modulation valve of aperture is installed on every blast pipe, realizes adjusting and the control of cooling air delivery.
3 induced draft fans are all between suspension cylinder and combustion air pipeline, and the import of 3 induced draft fans is connected with induced exhaust, and outlet is connected with combustion air pipeline with air.
3 induced draft fans are total to 9 of mating valves, are Pneumatic butterfly valve; The terminal valve of the first induced draft fan 7.1, the second induced draft fan 7.2 and lead to totally 5 of combustion air pipeline valves 9.1, is normally closed valve,, under off-position, closes; The 3rd induced draft fan 7.3 is imported and exported 3 valves and emptying pipe valve 8.1 is normally open valves,, under powering-off state, opens.
Useful effect:
1, suspension cylinder cooling air initial temperature reduces, and summer is than more than original design average reduction by 40 degree; More than reducing by 60 degree winter;
2, the pipeline of cooling air walking shortens 50%, and line pressure loss reduces by 50%;
3, obtain better cooling performance, guarantee not affect kiln body output.
Accompanying drawing explanation:
Fig. 1: suspension cylinder place pipeline connecting figure
1: blast inlet; 2: outer endless tube; 3: blast pipe;
4: air outlet tube; 5: interior endless tube; 6: induced exhaust; 10: suspension cylinder.
Fig. 2: induced draft fan place hardware interface chart
6: induced exhaust;
7.1: the first induced draft fans, 7.1I: the first induced draft fan inlet valve, 7.1O: the first induced draft fan outlet valve;
7.2: the second induced draft fans; 7.2I: the second induced draft fan inlet valve, 7.2O: the second induced draft fan outlet valve;
7.3: the three induced draft fans; 7.3I: the 3rd induced draft fan inlet valve, 7.3O: the 3rd induced draft fan outlet valve;
8: emptying pipe, 8.1: emptying pipe valve;
9: combustion air pipeline, 9.1: the valve between induced draft fan and combustion air pipeline.
Embodiment:
1, suspension cylinder place pipeline connects:
Comprise blast inlet 1, outer endless tube 2, blast pipe 3, air outlet tube 4, interior endless tube 5, induced exhaust 6.
Blast inlet 1: one end communicates with atmosphere, one end is connected with outer endless tube 2, and 1 mouthful of place of blast inlet is provided with filter screen;
Outer endless tube 2: outside endless tube, outer endless tube 2 downsides are provided with 11 of blast inlets, 11 of blast pipes.
Blast pipe 3:11 root, connects outer endless tube 2 above, and end opening leads to suspension cylinder 10, and middle part is provided with the adjustable manual modulation valve of aperture.
Air outlet tube 4:11 root, end opening leads to suspension cylinder 10, endless tube 5 in connecting above.
Interior endless tube 5: inner side endless tube, downside is connected with air outlet tube 4, and side is connected with induced exhaust 6.
Induced exhaust 6:2 root, one of each kiln thorax; One end is connected to interior endless tube 5, and one end is connected to the first induced draft fan 7.1, the second induced draft fan 7.2, the 3rd induced draft fan 7.3.
2, induced draft fan place hardware interface chart
Comprise: the first induced draft fan 7.1, the second induced draft fan 7.2, the 3rd induced draft fan 7.3, emptying pipe 8, combustion air pipeline 9.
The first induced draft fan 7.1, the second induced draft fan 7.2, the 3rd induced draft fan 7.3, the power resources of flow of cooling air, one end is connected with induced exhaust 6, and one end is connected with combustion air pipeline 9 with emptying pipe 8.
3 Fans power, boost, flow is identical.The first induced draft fan 7.1, the second induced draft fan 7.2 are Roots's induced draft fan, and the 3rd induced draft fan 7.3 is diesel oil blower fan, during as for subsequent use or power-off, use, and before and after every induced draft fan, valve are all installed, and induced draft fan can operate separately or safeguard.
3 induced draft fans are total to 9 of mating valves, are Pneumatic butterfly valve; The terminal valve of the first induced draft fan 7.1, the second induced draft fan 7.2 and lead to totally 5 of combustion air pipeline valves 9.1, is normally closed valve,, under off-position, closes; The 3rd induced draft fan 7.3 is imported and exported 3 valves and emptying pipe valve 8.1 is normally open valves,, under powering-off state, opens.
3, instrument
There are 2 of pressure units, 2 of flow transmitters, 22 of hot resistances.
Pressure unit: detect negative pressure value, install on outer endless tube.
Flow transmitter: be arranged on induced exhaust.
Hot resistance: 11 of each kiln thoraxes, are arranged on air outlet tube.
4, process description
Carry out cooling to suspension cylinder 10 with natural wind.There are 3 kinds of operating mode: normal manipulation mode, emptying pattern, power failure pattern.
Normal manipulation mode:
Valve open before and after 1 first induced draft fan 7.1,7.2 two induced draft fans of the second induced draft fan, valve closes before and after the 3rd induced draft fan 7.3 induced draft fans.
2 emptying pipe 8 valve closess, cooling air enters combustion air pipeline 9.
3 open the first induced draft fan 7.1,7.2 two induced draft fans of the second induced draft fan.
In 4 outer endless tubes 2, be negative pressure, natural air enters outer endless tube 2 via blast inlet 1;
Wind in 5 outer endless tubes 2 enters suspension cylinder 10 via blast pipe 3, to suspension cylinder 10 carry out cooling after, discharge via air outlet tube 4.On air outlet tube 4, hot resistance is installed, the temperature of wind is detected in real time.
6 wind of flowing through air outlet tube 4, enter interior endless tube 5, induced exhaust 6, squeeze in combustion air pipeline 9.On induced exhaust 6, flow transmitter is installed, the flow of wind is detected in real time.
7 the 3rd induced draft fans 7.3 are public for subsequent use, can start at any time and replace other blower fans.
Emptying pattern:
In low yield situation as during drying kiln, use, because combustion air volume consumption is low, the wind of cooling suspension cylinder 10 is directly emptying.
Power failure pattern:
Under power-off condition, personnel start the 3rd induced draft fan 7.3, the three induced draft fan 7.3 induced draft fan isolated operations to on-site manual, carry out cooling to suspension cylinder 10.Cooling air is directly emptying.

Claims (5)

1. a novel double-hearth lime kiln suspension cylinder cooling system, blast inlet is arranged on outer endless tube, and outer endless tube is the circle pipeline around kiln thorax, and outer endless tube below is provided with blast pipe, and blast pipe end opening is connected with cooling object suspension cylinder; The outlet of cooling object suspension cylinder is connected with air outlet tube, and the suitable for reading and interior endless tube of air outlet tube is connected, and interior endless tube is the circle pipeline around kiln thorax, and interior endless tube is connected with induced exhaust; Induced draft fan has 3: the first induced draft fan (7.1), the second induced draft fan (7.2), the 3rd induced draft fan (7.3), the first induced draft fan (7.1) connects the induced exhaust of No. 1 thorax, the second induced draft fan (7.2) connects the induced exhaust of No. 2 thoraxes, the 3rd induced draft fan (7.3) is the public stand-by fan of the first induced draft fan (7.1), the second induced draft fan (7.2), and the outlet of blower fan is connected with emptying pipe with combustion air pipeline; Before and after the first induced draft fan (7.1), the second induced draft fan (7.2), 1 pneumatic valve of cutting soon of each installation, is provided with 2 pneumatic valves of cutting soon before the 3rd induced draft fan (7.3) machine, and 1 pneumatic valve of cutting is soon installed after machine; It is 1 main pipeline that 3 induced draft fan outlet conduits gather, and this main pipeline is connected with emptying pipe with combustion air pipeline by threeway, and 1 pneumatic valve of cutting is soon installed between threeway and combustion air pipeline, and 1 pneumatic valve of cutting is soon installed on emptying pipe.
2. novel double-hearth lime kiln suspension cylinder cooling system according to claim 1, is characterized in that: blast inlet has 11, and each blast inlet place is provided with filter screen.
3. novel double-hearth lime kiln suspension cylinder cooling system according to claim 1, is characterized in that: blast pipe has 11, and the adjustable manual modulation valve of aperture is installed on every blast pipe, realizes adjusting and the control of cooling air delivery.
4. novel double-hearth lime kiln suspension cylinder cooling system according to claim 1, is characterized in that: 3 induced draft fans are all between suspension cylinder and combustion air pipeline, and the import of 3 induced draft fans is connected with induced exhaust, and outlet is connected with combustion air pipeline with air.
5. novel double-hearth lime kiln suspension cylinder cooling system according to claim 1, is characterized in that: 3 induced draft fans are total to 9 of mating valves, are Pneumatic butterfly valve; The terminal valve of the first induced draft fan (7.1), the second induced draft fan (7.2) and lead to totally 5 of combustion air pipeline valves (9.1), is normally closed valve,, under off-position, closes; 3 valves imported and exported by the 3rd induced draft fan 7.3 and emptying pipe valve (8.1) is normally open valve,, under powering-off state, opens.
CN201320596359.0U 2013-09-26 2013-09-26 Novel cooling system for double-hearth lime kiln suspension cylinders Expired - Lifetime CN203668244U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320596359.0U CN203668244U (en) 2013-09-26 2013-09-26 Novel cooling system for double-hearth lime kiln suspension cylinders

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104211309A (en) * 2014-09-05 2014-12-17 石家庄新华能源环保科技股份有限公司 Suspended cylinder type parallel flow heat storage double hearth kiln
CN107500571A (en) * 2017-09-22 2017-12-22 上海宝冶建设工业炉工程技术有限公司 A kind of gas burns the gas directing system of double-hearth lime kiln
CN112524958A (en) * 2021-01-15 2021-03-19 广西柳钢新材料科技有限公司 Negative pressure air inlet cooling device for suspension cylinder of Maerz kiln
CN114739187A (en) * 2022-03-21 2022-07-12 广西柳钢新材料科技有限公司 Constant-temperature frequency conversion control system for cooling system of suspension cylinder of Maerz kiln
CN114772954A (en) * 2022-02-28 2022-07-22 中冶长天国际工程有限责任公司 Double-chamber lime kiln and ring cooling suspension cylinder for same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104211309A (en) * 2014-09-05 2014-12-17 石家庄新华能源环保科技股份有限公司 Suspended cylinder type parallel flow heat storage double hearth kiln
CN104211309B (en) * 2014-09-05 2016-02-10 石家庄新华能源环保科技股份有限公司 A kind of suspension cylinder formula also flows the two thorax kiln of accumulation of heat
CN107500571A (en) * 2017-09-22 2017-12-22 上海宝冶建设工业炉工程技术有限公司 A kind of gas burns the gas directing system of double-hearth lime kiln
CN112524958A (en) * 2021-01-15 2021-03-19 广西柳钢新材料科技有限公司 Negative pressure air inlet cooling device for suspension cylinder of Maerz kiln
CN114772954A (en) * 2022-02-28 2022-07-22 中冶长天国际工程有限责任公司 Double-chamber lime kiln and ring cooling suspension cylinder for same
CN114739187A (en) * 2022-03-21 2022-07-12 广西柳钢新材料科技有限公司 Constant-temperature frequency conversion control system for cooling system of suspension cylinder of Maerz kiln

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C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20161019

Address after: 051431 Hebei Province, Shijiazhuang city Luancheng District Dou Yuzhen equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School)

Patentee after: SHIJIAZHUANG XINHUA ENERGY ENVIRONMENTAL TECHNOLOGY Co.,Ltd.

Address before: Room 1, unit 5, century garden, West District, Yuhua District, 401

Patentee before: Xie Yonghong

CX01 Expiry of patent term

Granted publication date: 20140625

CX01 Expiry of patent term