CN112524958B - Negative pressure air inlet cooling device for suspension cylinder of Maerz kiln - Google Patents
Negative pressure air inlet cooling device for suspension cylinder of Maerz kiln Download PDFInfo
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- CN112524958B CN112524958B CN202110057203.4A CN202110057203A CN112524958B CN 112524958 B CN112524958 B CN 112524958B CN 202110057203 A CN202110057203 A CN 202110057203A CN 112524958 B CN112524958 B CN 112524958B
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- 239000000725 suspension Substances 0.000 title claims abstract description 122
- 238000001816 cooling Methods 0.000 title claims abstract description 61
- 239000000428 dust Substances 0.000 claims abstract description 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003546 flue gas Substances 0.000 claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000000779 smoke Substances 0.000 claims description 27
- 230000009849 deactivation Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000004744 fabric Substances 0.000 description 3
- 238000001354 calcination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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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
- F27D9/00—Cooling of furnaces or of charges therein
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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
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/0005—Cooling of furnaces the cooling medium being a gas
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a negative pressure air inlet cooling device for suspension cylinders of a Mach-Zehnder kiln, which comprises two suspension cylinders connected in parallel through air inlet pipes of the suspension cylinders, a dust remover box body connected with air outlet pipes of the two suspension cylinders, wherein the air outlet pipes are combined and then divided into three branches, the first branch is sequentially connected with the dust remover box body and a flue gas dust removal induced draft fan through an electric regulating valve, the second branch is sequentially connected with a suspension cylinder induced draft fan and an electric valve through a pneumatic valve, a branch is arranged between the first pneumatic valve and the suspension cylinder induced draft fan and connected with a first regulating valve of the first branch and the dust remover box body, a pneumatic valve II is arranged on the branch, the three branch is sequentially connected with a diesel fan and a second manual valve through the first manual valve, and the cooling process comprises the following steps: and normally operating, setting a cooling mode for starting the suspension cylinder induced draft fan and a cooling mode for stopping the suspension cylinder induced draft fan. The invention can solve the problems of high production and operation risk and low production stability of the existing Maerz kiln with the suspension cylinder.
Description
Technical Field
The invention relates to the technical field of steel manufacturing equipment manufacturing, in particular to a negative pressure air inlet cooling device for a Maerz kiln suspension cylinder.
Background
The suspension cylinder system is a key core device of the Mailz kiln, so that a cooling device of the Malz kiln is very important, as shown in figures 1 and 2, the Malz kiln comprises a suspension cylinder fan set 1 with a plurality of fans connected in parallel, two suspension cylinders 3 connected in parallel through suspension cylinder air inlet pipes 2, air outlet pipes 4 of the two suspension cylinders 3 are combined and connected and then divided into two branches, one branch is connected with a combustion-supporting air pipeline 6 through a stop valve I5, sequentially passes through a Malz kiln combustion-supporting air reversing valve 24 and a kiln body smoke exhaust pipe, is connected with a dust remover box body 18 and a smoke dust remover 23, and the other branch is connected with an outer discharge pipeline 8 through a stop valve II 7. Because the internal structure of the suspension cylinder belongs to a hollow structure formed by heat-resistant stainless steel and is positioned at the calcining part of the kiln, in order to avoid the deformation of the structure under high temperature, at least 2 suspension cylinder fans are needed to respectively carry out uninterrupted cooling air supply (as shown in the figure I) on two suspension cylinder bodies 3 of the kiln. The air is supplied to the suspension cylinder bodies 3 of the two kiln cylinders by a suspension cylinder fan set 1 through a suspension cylinder air inlet pipe 2. The preheated suspension cylinder air enters a combustion-supporting air pipeline 6 through a suspension cylinder air outlet pipeline 4 through a first stop valve 5, or is exhausted to the atmosphere through a second stop valve 7 and an outer exhaust pipeline 8 (as shown in the figure II).
In the original kiln system, when the system is in a power failure state or a fault state of the suspended cylinder fan unit 1, an operator needs to switch a corresponding manual valve on a pipeline within 3 minutes, and manually open and adjust a diesel emergency fan in a fan room to realize the air supply cooling of the suspended cylinder body 3 of the malz kiln. The whole operation is relatively complicated and time-consuming. Under the condition that less and insufficient personnel exist, the emergency fan and the pipeline valve can not be quickly and quickly opened.
Under the power failure or equipment trouble situation, supposing that urgent air feed group 1 can not drop into smoothly, will lead to hanging 3 structural deformations of jar cylinder body, refractory material (including the pouring material) drop, lead to the kiln to stop production evacuation and overhaul, bring very big influence for production unit. Because of the risk consideration, part of the production units select the 'bracket-type' malz kiln with lower risk in the kiln model selection. Compared with a bracket-type Mairz kiln, the Macrz kiln with the suspension cylinder has more advantages, such as the construction of an annular channel, the realization of smooth and good process calcination of airflow and stable product quality, the saving of more refractory materials and the frequent manual cleaning of the channel. The safe reliability of the existing suspension cylinder emergency air supply system directly influences the safe operation of the suspension cylinder type malz kiln.
Because the existing cooling air supply pipeline of the suspension cylinder is provided with a plurality of electric control valves and is in a positive pressure air supply mode, certain potential safety hazards can be brought to emergency operation under the condition of the suspended cylinder fan unit obstacle. Simultaneously, because of the suspension jar cooling air after preheating and combustion-supporting air pipeline establish ties together, and be in the malleation state, when combustion-supporting air pipeline overhauls, probably because of the connection valve of suspension jar pipeline and combustion-supporting air pipeline is sealed badly, lead to the suspension jar wind after preheating to get into in the pipeline, scald maintainer. In addition, in autumn and winter, when the weather is cold, due to the fact that the temperature of the flue gas entering the flue gas dust collector is low, the cloth bag of the dust collector is prone to condensation and hardening, the temperature of the flue gas exhausted by the suspension cylinder is 130-150 ℃, and comprehensive utilization of the heat can be considered. Therefore, it is considered to modify the suspension cylinder cooling device to better serve the existing production.
Disclosure of Invention
The invention aims to solve the problem of providing a negative pressure air inlet cooling device for a suspension cylinder of a Maerz kiln, and aims to solve the problems of high production and operation risks and low production stability of the existing Maerz kiln with the suspension cylinder.
In order to solve the problems, the technical scheme of the invention is as follows: the malz kiln suspension cylinder negative pressure air inlet cooling device comprises two suspension cylinders connected in parallel through suspension cylinder air inlet pipes, and a dust remover box body connected with air outlet pipes of the two suspension cylinders, wherein the two air outlet pipes of the two suspension cylinders are combined and then divided into a first branch, a second branch and a third branch, the first branch is sequentially connected with the dust remover box body and a flue gas dust removal draught fan through an electric regulating valve, the second branch is sequentially connected with a suspension cylinder draught fan and an electric valve through a pneumatic valve, a branch is arranged behind the pneumatic valve I and the suspension cylinder draught fan and connected between the regulating valve I of the first branch and the dust remover box body, a pneumatic valve II is arranged on the branch, and the third branch is sequentially connected with a diesel fan and a manual valve II through the manual valve I;
the cooling process comprises the following steps: normally operating, setting a cooling mode for starting a suspension cylinder induced draft fan and a cooling mode for stopping the suspension cylinder induced draft fan;
when the kiln stably runs, the suspension cylinder induced draft fan is set to be in a suspension cylinder induced draft fan deactivation cooling mode, and the pneumatic valve I and the pneumatic valve II are in a closed state; flue gas in the kiln enters a flue gas dust collector box body through a kiln body flue gas exhaust pipe and is exhausted to the atmosphere through a flue gas dust collection induced draft fan; the electronic thermometer is related to the opening of the first electric regulating valve and the rotating speed of the smoke dust removal draught fan, when the electronic thermometer is higher than a set temperature, the opening of the first electric regulating valve is increased, the rotating speed of the smoke dust removal draught fan is increased, the air quantity of an air inlet pipe of the suspension cylinder is increased, and the suspension cylinder is kept well cooled; when the hanging cylinder induced draft fan is in a cooling mode of the hanging cylinder induced draft fan, the rotating speed of the electronic thermometer is related to the rotating speed of the hanging cylinder induced draft fan and the rotating speed of the smoke dust removal induced draft fan, and when the electronic thermometer is higher than a set temperature, the rotating speed of the hanging cylinder induced draft fan and the rotating speed of the smoke dust removal induced draft fan are increased to ensure that the cooling temperature of the hanging cylinder is good; if the flue gas dedusting induced draft fan fails at the moment, the kiln stops running, the pneumatic valve II and the electric regulating valve I are closed, and the cooling air of the suspension cylinder is directly discharged to the atmosphere by opening the electric valve of the outlet pipeline of the suspended cylinder induced draft fan;
when the kiln is stopped, the suspension cylinder induced draft fan is set to be in a suspension cylinder induced draft fan shutdown cooling mode, the electric regulating valve II is closed, the electronic thermometer is related to the rotating speed of the flue gas dust removal induced draft fan and the opening degree of the electric regulating valve I, when the electronic thermometer is higher than a set temperature, the rotating speed of the flue gas dust removal induced draft fan is increased, the opening degree of the electric regulating valve I is increased, and good cooling of the suspension cylinder is achieved; when the suspension cylinder induced draft fan is set to be in a cooling mode started by the suspension cylinder induced draft fan in a kiln shutdown state, the smoke dedusting induced draft fan is stopped, the first pneumatic valve, the suspension cylinder induced draft fan and the electric valve are started, the electronic thermometer phase is associated with the rotation speed of the suspension cylinder induced draft fan, and when the electronic thermometer is higher than a set temperature, the rotation speed of the suspension cylinder induced draft fan is increased to ensure that the temperature of the suspension cylinder is normal;
and when the power is off, opening the first manual valve and the second manual valve, and starting the diesel fan to cool the suspension cylinder.
In the above technical solution, a more specific solution may be: the air inlet pipe of the suspension cylinder is connected with a filter screen of the air inlet pipe of the suspension cylinder.
Further: and an electronic thermometer is arranged on the air outlet pipe.
Further: and a side branch extends out between the first electric regulating valve and the box body of the dust remover of the first branch, and the side branch is connected with a smoke exhaust pipe of the kiln body through a second electric regulating valve.
Further: the branch circuit is arranged between the side branch on the first branch circuit and the dust remover box body.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the negative-pressure air inlet cooling device for the suspension cylinder of the Maerz kiln adopts a fan to supply air in a negative pressure mode, is not connected with a combustion-supporting air supply system, improves the stability of the equipment guarantee of the suspension cylinder, and guarantees the maintenance safety of the kiln; the draught fans of the smoke dust collector and the hanging cylinder can be realized, even if a hanging cylinder fan set consisting of three hanging cylinder cooling fans and one diesel fan in the prior art is changed into two fans of one hanging cylinder draught fan and one diesel draught fan for cooling, the energy consumption is greatly reduced, the investment cost of energy and equipment is saved, meanwhile, the smoke temperature of the smoke dust collector can be preheated at a cold temperature in autumn and winter, and the service life of a dust removing cloth bag is prolonged; by the method, the production and operation risks of the Maerz kiln with the suspension cylinder are further reduced, the production stability of the kiln is improved, and the popularization of the advantageous kiln type is facilitated; under the condition of using a variable frequency fan to carry out negative pressure cooling, the temperature of a pipeline of a suspension cylinder is used as standard control, the free adjustment of cooling air volume can be realized (the required cooling air volume can be further reduced under the condition that a kiln is not in production), and the cooling effect can be ensured.
Drawings
FIG. 1 is a front view of the prior art;
FIG. 2 is a schematic process diagram of the prior art;
fig. 3 is a schematic process diagram of an embodiment of the invention.
Detailed Description
The embodiments of the invention will be further described in detail below with reference to the following drawings:
the maltz kiln suspension cylinder negative pressure air intake cooling device shown in fig. 3 comprises two suspension cylinders 3 with suspension cylinder air inlet pipe filter screens 9 connected in parallel through suspension cylinder air inlet pipes 2, and a dust remover box 18 connected with air outlet pipes 4 of the two suspension cylinders 3. The air outlet pipes 4 of the two hanging cylinders are combined and then connected with an electronic thermometer 10, and then the electronic thermometer is divided into a first branch, a second branch and a third branch. The first branch is connected in sequence after passing through the first electric regulating valve 14, the dust remover box 18 and the smoke dust removal draught fan 19 extend out of a side branch between the first electric regulating valve 14 of the first branch and the dust remover box 18, and the side branch is connected with the kiln body smoke exhaust pipe 15 through the second electric regulating valve 16. The branch channel is sequentially connected with a suspension cylinder induced draft fan 12 and an electric valve 17 through a pneumatic valve I11, a branch channel is connected between a regulating valve I14 of the branch channel I and a dust remover box body 18 behind the pneumatic valve I11 and the suspension cylinder induced draft fan 12, and a pneumatic valve II 13 is arranged on the branch channel. The branch is arranged between a side branch on the first branch and the dust remover box 18. The branch tee is connected with a diesel fan 21 and a manual valve II 22 in sequence through a manual valve I20.
During normal production, two modes can be set, wherein one mode is a cooling mode for starting the suspension cylinder induced draft fan, and the other mode is a cooling mode for stopping the suspension cylinder induced draft fan.
When the kiln stably runs, the suspension cylinder induced draft fan 12 is set to be in a suspension cylinder induced draft fan deactivation cooling mode, and the pneumatic valve I11 and the pneumatic valve II 13 are in a closed state; flue gas in the kiln enters a flue gas dust collector box body 18 through a kiln body flue gas exhaust pipe 15 and is exhausted to the atmosphere through a flue gas dust collection induced draft fan 19; the electronic thermometer 10 is related to the opening degree of the first electric regulating valve 14 and the rotating speed of the smoke dust removal induced draft fan 19, when the electronic thermometer 10 is higher than a set temperature, the opening degree of the first electric regulating valve 14 is increased, and the rotating speed of the smoke dust removal induced draft fan 19 is increased, so that the air quantity of the air inlet pipe 2 of the suspension cylinder is increased, and the suspension cylinder is kept to be well cooled; when the hanging cylinder induced draft fan 12 is in a cooling mode of the hanging cylinder induced draft fan, the rotating speed of the electronic thermometer 10 is related to the rotating speed of the hanging cylinder induced draft fan 12 and the rotating speed of the smoke dust removal induced draft fan 19, and when the electronic thermometer 10 is higher than a set temperature, the rotating speed of the hanging cylinder induced draft fan 12 and the rotating speed of the smoke dust removal induced draft fan 19 are increased to ensure that the cooling temperature of the hanging cylinder is good; if the flue gas dust removal induced draft fan 19 breaks down at this moment, the kiln stops operating, and pneumatic valve two 13, electrical control valve 14 are closed, through opening suspension jar 12 outlet pipeline motorised valve 17 of induced draft fan, realize directly discharging the cooling air of suspension jar to the atmosphere.
When the kiln is stopped, the suspension cylinder induced draft fan 12 is set to be in a cooling mode that the suspension cylinder induced draft fan is stopped, the electric regulating valve II 16 is closed, the electronic thermometer 10 is related to the rotating speed of the smoke dust removal induced draft fan 19 and the opening degree of the electric regulating valve I14, when the electronic thermometer 10 is higher than a set temperature, the rotating speed of the smoke dust removal induced draft fan 19 is increased, the opening degree of the electric regulating valve I14 is increased, and good cooling of the suspension cylinder is achieved; under the shutdown state, when the suspension cylinder induced draft fan 12 is set to be in the cooling mode started by the suspension cylinder induced draft fan, the smoke dedusting induced draft fan 19 is stopped, the pneumatic valve I11, the suspension cylinder induced draft fan 12 and the electric valve 17 are started, the electronic thermometer phase 10 is related to the rotating speed of the suspension cylinder induced draft fan 12, and when the electronic thermometer 10 is higher than the set temperature, the rotating speed of the suspension cylinder induced draft fan 12 is increased to ensure that the temperature of the suspension cylinder is normal.
When the power failure state occurs, the first manual valve 20 and the second manual valve 22 can be opened, the diesel fan 21 is started, and the suspension cylinder system is cooled.
According to the negative-pressure air inlet cooling device for the suspension cylinder of the Maerz kiln, the air volume is designed to be excessive by utilizing the existing Maerz kiln smoke dust removal induced draft fan 19, and the smoke dust removal induced draft fan 19 of the existing kiln can be effectively utilized to realize negative-pressure air inlet cooling of the Maerz kiln suspension cylinder; an electronic thermometer 10 is arranged on an air outlet pipe 4 of a suspension cylinder of the malz kiln, so that the electronic thermometer 10 and a suspension cylinder induced draft fan 12 or a flue gas dedusting induced draft fan 19 are connected to supply air, and the rotation speed control of the suspension cylinder induced draft fan 12 is realized through the measurement connection of the electronic thermometer; when the suspension cylinder induced draft fan 12 is not started, and the smoke dust removal induced draft fan 19 is started to operate, the electronic thermometer 10 is enabled to regulate the rotating speed of the electric regulating valve I14 and the smoke dust removal induced draft fan 19 of the pipeline in a numerical association manner through setting a program, so that the system cooling of the suspension cylinder is realized; in the cooling mode, the preheated suspension cylinder air has 130-150 ℃, so that the flue gas temperature of the flue gas dust collector can be preheated at a relatively cold temperature in autumn and winter, and the service life of the dust collecting cloth bag is prolonged.
Claims (5)
1. The utility model provides a maerz kiln hangs jar negative pressure air inlet cooling device, includes through hanging two jar (3) that hang that jar air-supply line (2) are parallelly connected, two dust remover box (18) that the play tuber pipe (4) of hanging jar (3) are connected, its characterized in that: the air outlet pipes (4) of the two suspension cylinders are combined and then divided into a first branch, a second branch and a third branch, the first branch is sequentially connected with the deduster box body (18) and the flue gas dedusting induced draft fan (19) through a first electric regulating valve (14), the second branch is sequentially connected with a suspension cylinder induced draft fan (12) and an electric valve (17) through a first pneumatic valve (11), a branch is arranged behind the first pneumatic valve (11) and the suspension cylinder induced draft fan (12) and connected between the first regulating valve (14) of the first branch and the deduster box body (18), a second pneumatic valve (13) is arranged on the branch, and the third branch is sequentially connected with a diesel fan (21) and a second manual valve (22) through a first manual valve (20);
the cooling process comprises the following steps: normally operating, setting a cooling mode for starting a suspension cylinder induced draft fan and a cooling mode for stopping the suspension cylinder induced draft fan;
when the kiln stably runs, a suspension cylinder induced draft fan (12) is set to be in a suspension cylinder induced draft fan deactivation cooling mode, and a pneumatic valve I (11) and a pneumatic valve II (13) are in a closed state; flue gas in the kiln enters a flue gas dust collector box body (18) through a kiln body flue gas exhaust pipe (15) and is exhausted to the atmosphere through a flue gas dust collection induced draft fan (19); the electronic thermometer (10) is related to the opening of the electric regulating valve I (14) and the rotating speed of the smoke dust removal induced draft fan (19), when the electronic thermometer (10) is higher than a set temperature, the opening of the electric regulating valve I (14) is increased, the rotating speed of the smoke dust removal induced draft fan (19) is increased, the air volume of the air inlet pipe (2) of the suspension cylinder is increased, and the suspension cylinder is kept to be well cooled; when the hanging cylinder induced draft fan (12) is in a cooling mode of the hanging cylinder induced draft fan, the rotating speeds of the electronic thermometer (10) and the hanging cylinder induced draft fan (12) and the flue gas dust removal induced draft fan (19) are related, and when the electronic thermometer (10) is higher than a set temperature, the rotating speeds of the hanging cylinder induced draft fan (12) and the flue gas dust removal induced draft fan (19) are increased to ensure that the cooling temperature of the hanging cylinder is good; if the flue gas dedusting induced draft fan (19) fails at the moment, the kiln stops running, the pneumatic valve II (13) and the electric control valve I (14) are closed, and the electric valve (17) of the outlet pipeline of the suspended cylinder induced draft fan (12) is opened to directly discharge cooling air of the suspended cylinder to the atmosphere;
when the kiln is stopped, the suspension cylinder induced draft fan (12) is set to be in a suspension cylinder induced draft fan deactivation cooling mode, the electric regulating valve II (16) is closed, the electronic thermometer (10) is related to the rotating speed of the flue gas dust removal induced draft fan (19) and the opening degree of the electric regulating valve I (14), when the electronic thermometer (10) is higher than a set temperature, the rotating speed of the flue gas dust removal induced draft fan (19) is increased, the opening degree of the electric regulating valve I (14) is increased, and good cooling of the suspension cylinder is achieved; under the condition of shutdown, when a suspension cylinder induced draft fan (12) is set to be in a cooling mode started by the suspension cylinder induced draft fan, a flue gas dedusting induced draft fan (19) is stopped, a first pneumatic valve (11), the suspension cylinder induced draft fan (12) and an electric valve (17) are started, an electronic thermometer (10) is related to the rotating speed of the suspension cylinder induced draft fan (12), and when the electronic thermometer (10) is higher than a set temperature, the rotating speed of the suspension cylinder induced draft fan (12) is increased to ensure that the temperature of a suspension cylinder is normal;
and when the power failure state occurs, the first manual valve (20) and the second manual valve (22) are opened, and the diesel fan (21) is started to cool the suspension cylinder.
2. The Maerz kiln suspension cylinder negative pressure air intake cooling device of claim 1, characterized in that: the hanging cylinder air inlet pipe (2) is connected with a hanging cylinder air inlet pipe filter screen (9).
3. The malz kiln suspension cylinder negative pressure air intake cooling device of claim 1 or 2, characterized in that: an electronic thermometer (10) is arranged on the air outlet pipe (4).
4. The Maerz kiln suspension cylinder negative pressure air intake cooling device of claim 3, characterized in that: and a side branch extends out between the first electric regulating valve (14) of the first branch and the box body (18) of the dust remover, and the side branch is connected with a kiln body smoke exhaust pipe (15) through a second electric regulating valve (16).
5. The Maerz kiln suspension cylinder negative pressure air intake cooling device of claim 4, characterized in that: the branch circuit is arranged between the bypass on the first branch circuit and the dust remover box body (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110057203.4A CN112524958B (en) | 2021-01-15 | 2021-01-15 | Negative pressure air inlet cooling device for suspension cylinder of Maerz kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110057203.4A CN112524958B (en) | 2021-01-15 | 2021-01-15 | Negative pressure air inlet cooling device for suspension cylinder of Maerz kiln |
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| Publication Number | Publication Date |
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| CN112524958A CN112524958A (en) | 2021-03-19 |
| CN112524958B true CN112524958B (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110057203.4A Active CN112524958B (en) | 2021-01-15 | 2021-01-15 | Negative pressure air inlet cooling device for suspension cylinder of Maerz kiln |
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Application publication date: 20210319 Assignee: Xingye Liugang New Materials Technology Co.,Ltd. Assignor: Guangxi Liugang New Material Technology Co.,Ltd. Contract record no.: X2023980046044 Denomination of invention: Negative pressure air inlet cooling device for hanging cylinder of Maerz kiln Granted publication date: 20220705 License type: Common License Record date: 20231108 Application publication date: 20210319 Assignee: Wuxuan Liugang New Material Technology Co.,Ltd. Assignor: Guangxi Liugang New Material Technology Co.,Ltd. Contract record no.: X2023980046042 Denomination of invention: Negative pressure air inlet cooling device for hanging cylinder of Maerz kiln Granted publication date: 20220705 License type: Common License Record date: 20231108 Application publication date: 20210319 Assignee: Guangxi Fanggang New Material Technology Co.,Ltd. Assignor: Guangxi Liugang New Material Technology Co.,Ltd. Contract record no.: X2023980046040 Denomination of invention: Negative pressure air inlet cooling device for hanging cylinder of Maerz kiln Granted publication date: 20220705 License type: Common License Record date: 20231108 Application publication date: 20210319 Assignee: Liuzhou Shanhai Technology Co.,Ltd. Assignor: Guangxi Liugang New Material Technology Co.,Ltd. Contract record no.: X2023980046036 Denomination of invention: Negative pressure air inlet cooling device for hanging cylinder of Maerz kiln Granted publication date: 20220705 License type: Common License Record date: 20231108 |
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