CN112807904A - Dust treatment system and method for coke oven refractory masonry shed - Google Patents
Dust treatment system and method for coke oven refractory masonry shed Download PDFInfo
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- CN112807904A CN112807904A CN202110078022.XA CN202110078022A CN112807904A CN 112807904 A CN112807904 A CN 112807904A CN 202110078022 A CN202110078022 A CN 202110078022A CN 112807904 A CN112807904 A CN 112807904A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
- B01D47/063—Spray cleaning with two or more jets impinging against each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/12—Washers with plural different washing sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
Abstract
The invention relates to the technical field of dust treatment, in particular to a dust treatment system and method for a coke oven refractory masonry shed. The dust treatment system comprises a dust removal unit, an air supply unit, a spraying unit, a control unit and a dust sensor; the dust removal unit is used for collecting dust in the masonry shed; the air supply unit is used for exchanging air with the outside of the shed and providing fresh air for the inside of the shed; the spraying unit is arranged in the shed and is used for spraying atomized water vapor into the shed; the control unit is respectively electrically connected with the dust removal unit, the air supply unit, the spraying unit and the dust sensor and is in signal connection with the dust removal unit, the air supply unit, the spraying unit and the dust sensor; the dust sensor is used for monitoring the air quality and the dust concentration in the masonry shed in real time. The dust removal operation of all units in the dust processing system is controlled to be completed together by setting an upper dust concentration threshold and a lower dust concentration threshold through the control unit. Reduce the pollution of dust in the masonry shed, improve the operation environment, and eliminate the occupational disease harm brought to workers by the traditional operation mode.
Description
Technical Field
The invention relates to the technical field of dust treatment, in particular to a dust treatment system and method for a coke oven refractory masonry shed.
Background
The modern coke oven consists of ten thousand tons,Large-scale thermal equipment built by nearly thousands of brick-shaped refractory materials. Wherein the silica brick (containing SiO)2Over 93 percent of refractory bricks) accounts for 60 to 70 percent, and the silica bricks are used for building the walls of the heat storage chamber, the chute, the combustion chamber, the carbonization chamber, the furnace top and the like of the coke oven.
However, a large amount of dust is generated in the storage management of refractory materials, brick processing, masonry slurry stirring, and refractory brick masonry, and the silica component contained in the dust is the leading cause of silicosis. Free silica dust accumulates on the human alveoli through the respiratory tract, affecting pulmonary gas exchange until the alveoli become inoperable and the lung tissue becomes fully fibrotic. Silicosis is a type of pneumoconiosis, an occupational disease that is serious to threaten the life of patients. In order to reduce the harm to the body, workers generally carry dust masks in the operation process; the common dustproof mask has poor dustproof effect; the whole headgear type dust mask can cause heavy burden to workers in operation, and the workers can sweat in a few minutes due to the good sealing performance of the dust mask, so that the sight line is blocked due to water vapor, and the workers are inconvenient to work.
The masonry of the coke oven refractory materials is carried out in a totally-enclosed or semi-enclosed masonry shed. A large amount of dust is generated in masonry construction, construction enterprises at home and abroad mostly adopt simple treatment modes such as manual cleaning, water spraying and the like at present, only part of dust can be cleaned, and basically no active treatment measures are adopted for dust particles floating in the air, so that the environmental pollution is serious.
Disclosure of Invention
In order to solve the technical problem, the invention provides a dust treatment system and a method for a coke oven refractory masonry shed.
In order to achieve the purpose, the invention adopts the technical scheme that: a dust treatment system used in a coke oven refractory masonry shed comprises a dust removal unit, an air supply unit, a spraying unit, a control unit and a dust sensor; the dust removal unit is used for collecting dust in the masonry shed; the air supply unit is used for exchanging air with the outside of the shed and providing fresh air for the inside of the shed; the spraying unit is arranged in the shed and is used for spraying atomized water vapor into the shed, and the atomized water vapor is combined with dust floating in the shed to increase the weight of the dust and settle the dust under the action of gravity; the control unit is respectively electrically connected with the dust removal unit, the air supply unit, the spraying unit and the dust sensor and is in signal connection with the dust removal unit, the air supply unit, the spraying unit and the dust sensor; under the action of the control unit, each unit is automatically started and stopped, and the units cooperate with each other to complete the dust removal operation in the shed; the dust sensor is used for monitoring the air quality and the dust concentration in the masonry shed in real time and transmitting the detected dust concentration to the control unit.
A dust treatment method for a coke oven refractory masonry shed comprises the following steps:
step one, after the installation of the masonry shed is finished and before the construction of the coke oven is started, the dust treatment system is built in the masonry shed;
setting a threshold value of the dust processing system, and setting an upper limit threshold value and a lower limit threshold value of dust concentration through a control unit;
starting the dust treatment system when the coke oven masonry operation is started; the dust processing system monitors the dust concentration of the operation area in real time through a dust sensor;
when the detected value of the dust concentration reaches or exceeds the upper limit threshold of the dust concentration, the control unit respectively sends signals to the spraying unit and the dust removal unit, the spraying unit is started and starts spraying operation, and certain mass of dust particles freely fall to the ground through combination of the dust particles and water mist; the dust removal unit starts dust removal operation, and dust in the masonry shed is sucked into the dust removal unit;
step five, along with the gradual reduction of the dust concentration in the shed collected by the dust sensor, when the dust concentration value is lower than the lower limit threshold of the dust concentration, the control unit respectively sends out a stop operation signal to the spraying unit and the dust collection unit; before the coke oven masonry operation is finished, according to the real-time monitoring of the dust sensor, the dust treatment system repeats the fourth step and the fifth step;
and step six, after the masonry operation is finished, the dust treatment system can be closed, and operators are arranged to clean the slurry and dust scattered in the shed.
Compared with the prior art, the invention has the beneficial effects that: by arranging the dust removal unit, the air supply unit, the spraying unit and the control unit, the dust in the masonry shed can be monitored and effectively treated in real time, so that the pollution of the dust in the masonry shed is reduced, the operation environment is improved, and the occupational disease harm to workers caused by the traditional operation mode is eliminated; moreover, by using the invention, workers only need to wear the dust mask when building the coke oven in the greenhouse.
In order to obtain better technical effects, the invention can be further improved on the basis of the technical scheme.
Furthermore, the dust removal unit is provided with draught fan and dust collecting equipment, and dust collecting equipment is provided with air intake and air outlet, and the inlet scoop of draught fan communicates with dust collecting equipment's air outlet, and dust collecting equipment's air intake setting is in the canopy.
Furthermore, the dust removing equipment adopts water dust removal or pulse cloth bag dust removal.
Furthermore, a humidity sensor is arranged in the masonry shed and is electrically connected with the control unit and in signal connection with the control unit.
Further, the spraying unit comprises a water supply assembly, a main pipe, a branch pipe and an atomizing nozzle; the water supply assembly is communicated with the main pipe, a plurality of branch pipes are arranged on the main pipe, and the tail ends of the branch pipes are fixedly connected with the atomizing nozzles; the spraying area of the spraying unit covers the whole masonry area in the shed.
Furthermore, silica bricks and heat-insulating bricks need to be waterproof; when the dust treatment system works, the humidity sensor carries out real-time online monitoring on the air humidity of the operation area; setting an upper air humidity threshold and a lower air humidity threshold through a control unit; in the third step, only when the air humidity value detected by the humidity sensor is lower than the air humidity lower limit threshold value, the control unit sends an effective starting signal to the spraying unit; when the air humidity value is lower than the lower air humidity threshold, the spraying unit is still in a standby state even if the dust concentration value in the shed reaches the upper dust concentration threshold; and step three or step four, when the air humidity value reaches or exceeds the air humidity upper limit threshold, even if the dust concentration value in the shed reaches the dust concentration upper limit threshold, the spraying unit still stops spraying operation.
Furthermore, a buzzer alarm is arranged in the dust removal system and is electrically connected and in signal connection with the control unit;
setting a dust concentration alarm threshold value through a control unit, wherein the dust concentration alarm threshold value is higher than an upper limit threshold value of dust concentration; when the dust concentration in the shed reaches or exceeds the dust concentration alarm threshold value, the control unit sends a signal to the buzzer alarm, and the buzzer alarm gives an alarm; at the moment, the operators should evacuate from the masonry shed in time; when the dust concentration value is lower than the upper limit threshold of the dust concentration, the control unit sends a signal to the buzzer alarm, and the buzzer alarm stops giving an alarm; at this time, the worker enters the booth again to perform work.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a dust removing unit in the embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure of a spray unit in an embodiment of the present invention;
in the figure: the device comprises a dust removal unit 1, an induced draft fan 1-1 and dust removal equipment 1-2; an air supply unit 2; the device comprises a spraying unit 3, a water supply assembly 3-1, a main pipe 3-2, branch pipes 3-3 and atomizing nozzles 3-4; a control unit 4; a dust sensor 5; a humidity sensor 6; and a building shed 7.
Detailed Description
The invention mainly aims to solve the problem of silicosis brought to operators by free silicon dioxide in dust during coke oven building. Controlling or reducing silicosis diseases is mainly to prevent dust. Therefore, the invention provides a comprehensive dust treatment technology suitable for the masonry operation process of the coke oven.
The present invention will be further described in detail with reference to the drawings and examples.
Referring to fig. 1, a dust treatment system for use in a refractory masonry shed 7 of a coke oven according to an embodiment of the present invention is mainly composed of a dust removal unit 1, an air supply unit 2, a spray unit 3, a control unit 4, a dust sensor 5, and the like.
Wherein, dust removal unit 1 is used for collecting the dust in the canopy. Referring to fig. 1 and 2, in the embodiment, the dust removing unit 1 is provided with an induced draft fan 1-1 and a dust removing device 1-2, the dust removing device 1-2 is provided with an air inlet and an air outlet, the air inlet of the induced draft fan 1-1 is communicated with the air outlet of the dust removing device 1-2, and the air inlet of the dust removing device 1-2 is arranged in the shed. In the embodiment, the air outlet of the induced draft fan 1-1 is arranged outside the masonry shed 7, and an air outlet pipe can be additionally arranged at the air outlet in order to determine the air outlet direction of the air outlet of the induced draft fan 1-1.
In this embodiment, the dust removing device 1-2 may preferably be a pulse bag dust removing device. Or water dedusting, namely, the air flow with dust is firstly filtered in water under the action of the induced draft fan 1-1, and then the dust is discharged through an air outlet of the induced draft fan 1-1 after being filtered.
The air supply unit 2 is used for exchanging air with the outside of the shed and providing fresh air for the inside of the shed; in the present embodiment, the air supply unit 2 is an industrial fresh air system. When the embodiment of the invention is used for carrying out dust removal operation on the coke oven masonry shed 7, the air supply unit 2 and the dust removal unit 1 are started and stopped simultaneously.
The spraying unit 3 is arranged in the shed, the spraying unit 3 is used for spraying atomized water vapor into the shed, and the atomized water vapor is combined with dust floating in the shed to increase the weight of the dust and settle under the action of gravity. Referring to fig. 1 and 3, in the present embodiment, the spraying unit 3 includes a water supply assembly 3-1, a main pipe 3-2, a branch pipe 3-3, and an atomizer 3-4; the water supply assembly 3-1 is communicated with the main pipe 3-2, the main pipe 3-2 is provided with a plurality of branch pipes 3-3, and the tail ends of the branch pipes 3-3 are fixedly connected with the atomizing nozzles 3-4; the spraying area of the spraying unit 3 covers the whole masonry area in the shed.
In the practical implementation of the embodiment of the invention, a plurality of branch pipes 3-3 and atomizing nozzles 3-4 can be arranged on a main pipe 3-2 of the atomizing unit 3 at equal intervals according to different sizes of the coke oven; the main pipe 3-2 can be fixed on the upright post of the masonry shed 7, or a special spraying unit 3 mounting rod frame and the like can be arranged in the masonry shed 7.
The control unit 4 is respectively electrically connected with the dust removal unit 1, the air supply unit 2, the spraying unit 3 and the dust sensor 5 and is in signal connection; and under the action of the control unit 4, all the units are automatically started and stopped, and the dust removal operation in the shed is completed through cooperation.
The dust sensor 5 is used for monitoring the air quality and the dust concentration in the masonry shed 7 in real time, the detected dust concentration is transmitted to the control unit 4, and the control unit 4 controls each corresponding unit in the dust treatment system according to the dust concentration value. The dust sensor 5 is a dust concentration monitor, and the dust sensor 5 in this embodiment uses a pm2.5 dust concentration detector.
A humidity sensor 6 is also arranged in the masonry shed 7, and the humidity sensor 6 is electrically connected with the control unit 4 and is in signal connection with the control unit.
The dust treatment method for the dust treatment system in the refractory masonry shed 7 of the coke oven provided by the embodiment of the invention comprises the following steps.
Step one, after the masonry shed 7 is installed and before the coke oven masonry is started, the dust treatment system is built in the masonry shed 7.
And step two, setting a threshold value of the dust processing system, and setting an upper limit threshold value and a lower limit threshold value of the dust concentration through the control unit 4.
Starting the dust treatment system when the coke oven masonry operation is started; the dust processing system monitors the dust concentration of the operation area in real time through the dust sensor 5.
When the detected value of the dust concentration reaches or exceeds the upper limit threshold of the dust concentration, the control unit 4 sends signals to the spraying unit 3 and the dust removal unit 1 respectively, the spraying unit 3 is started and starts spraying operation, and the dust particles reach a certain mass and fall to the ground freely by combining the dust particles with water mist; the dust removing unit 1 starts dust removing operation, and dust in the masonry shed 7 is sucked into the dust removing unit 1. In this embodiment, air containing a large amount of dust in the masonry shed 7 enters through the air inlet of the dust removing device 1-2 under the action of the induced draft fan 1-1, clean air filtered by the dust removing device 1-2 enters the air inlet fan through the air outlet of the dust removing device 1-2, and finally is discharged into the air outside the masonry shed 7 through the air outlet (and the air guide pipe) of the air inlet fan.
Step five, along with the gradual reduction of the dust concentration in the shed collected by the dust sensor 5, when the dust concentration value is lower than the lower limit threshold of the dust concentration, the control unit 4 respectively sends out a signal for stopping operation to the spraying unit 3 and the dust collecting unit; and (5) before the coke oven masonry operation is finished, repeating the fourth step and the fifth step by the dust treatment system according to the real-time monitoring of the dust sensor 5.
And step six, after the masonry operation is finished, the dust treatment system can be closed, and operators are arranged to clean the slurry and dust scattered in the shed.
In the built masonry shed 7, monitoring the air quality through the dust sensor 5 in the operation area from time to time; dust collection operation is carried out through a draught fan 1-1 in the dust collection unit 1, so that dust in the masonry shed 7 enters dust collection equipment 1-2 of the dust collection unit 1.
Under the combined action of the spraying unit 3 and the dust removal unit 1, the dust content in the masonry shed 7 is reduced, and the purpose of air purification is achieved. It should be noted that silica bricks and heat-insulating bricks need to be waterproof; therefore, in order to ensure the quality of the silica bricks and the insulating bricks, the humidity sensor 6 is used for monitoring the air humidity (namely the water content) in the masonry shed 7 on line in real time while the dust treatment system works.
Thus, in step two, an upper threshold value of air humidity and a lower threshold value of air humidity are set by the control unit 4; in the third step, the control unit 4 sends an effective starting signal to the spraying unit 3 only when the air humidity value detected by the humidity sensor 6 is lower than the air humidity lower limit threshold; when the air humidity value is lower than the lower air humidity threshold, the spraying unit 3 is still in a standby state even if the dust concentration value in the shed reaches the upper dust concentration threshold. In step three or step four, when the air humidity value reaches or exceeds the air humidity upper limit threshold, the spraying unit 3 still stops spraying operation even if the dust concentration value in the shed reaches the dust concentration upper limit threshold.
For the preceding paragraph, this can be explained as follows: as long as the humidity value in the masonry shed 7 reaches the upper limit threshold of the air humidity, the spraying unit 3 has to stop working; the spraying unit 3 can be started to spray only when the humidity value is below the lower limit threshold of the air humidity.
In order to further ensure the safety of the operation in the masonry shed 7, a buzzer alarm is arranged in the dust removal system and is electrically and signally connected with the control unit 4.
In the second step, a dust concentration alarm threshold is set through the control unit 4, and the dust concentration alarm threshold is higher than an upper limit dust concentration threshold; when the dust concentration in the shed reaches or exceeds the dust concentration alarm threshold value, the control unit 4 sends a signal to the buzzer alarm, and the buzzer alarm gives an alarm; at the moment, the operators should withdraw from the masonry shed 7 in time; when the dust concentration value is lower than the upper limit threshold of the dust concentration, the control unit 4 sends a signal to the buzzer alarm, and the buzzer alarm stops giving an alarm; at this time, the worker enters the booth again to perform work.
In the embodiment of the invention, in order to conveniently build the dust treatment system and reduce the use of conducting wires or signal wires in the masonry shed 7 as much as possible due to the requirement of spraying operation, the dust sensor 5 or the humidity sensor 6 and the control unit 4 transmit data and signals in a wireless communication mode.
When the coke oven is built, the dust treatment system and the method provided by the invention are used at the relatively closed positions which are easy to generate a large amount of dust, such as the built shed 7, and the like, so that the dust content in a construction operation area can be reduced, the air is purified, the air quality in the operation area reaches the standard, the occupational disease risk of operators is reduced, and the occupational health level is improved.
The comprehensive dust treatment technology provided by the invention is simple to operate and visual in effect, and the dust treatment system can be repeatedly utilized and can be widely applied to the construction of coke oven masonry.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
1. A dust processing system for use in a coke oven refractory masonry shed is characterized in that: the dust removal device comprises a dust removal unit, an air supply unit, a spraying unit, a control unit and a dust sensor;
the dust removal unit is used for collecting dust in the masonry shed;
the air supply unit is used for exchanging air with the outside of the shed and providing fresh air for the inside of the shed;
the spraying unit is arranged in the shed and is used for spraying atomized water vapor into the shed, and the atomized water vapor is combined with dust floating in the shed to increase the weight of the dust and settle the dust under the action of gravity;
the control unit is respectively electrically connected with the dust removal unit, the air supply unit, the spraying unit and the dust sensor and is in signal connection with the dust removal unit, the air supply unit, the spraying unit and the dust sensor; under the action of the control unit, each unit is automatically started and stopped, and the units cooperate with each other to complete the dust removal operation in the shed;
the dust sensor is used for monitoring the air quality and the dust concentration in the masonry shed in real time and transmitting the detected dust concentration to the control unit.
2. The dust handling system for use in a coke oven refractory masonry shelter of claim 1, wherein: the dust removal unit is provided with draught fan and dust collecting equipment, and dust collecting equipment is provided with air intake and air outlet, and the inlet scoop of draught fan communicates with dust collecting equipment's air outlet, and dust collecting equipment's air intake setting is in the canopy.
3. The dust handling system for use in a coke oven refractory masonry shelter of claim 2, wherein: the dust removing equipment adopts water dust removal or pulse cloth bag dust removal.
4. The dust handling system for use in a coke oven refractory masonry shelter of claim 1, wherein: and a humidity sensor is arranged in the greenhouse and is electrically connected with the control unit and in signal connection with the control unit.
5. The dust handling system for use in a coke oven refractory masonry shelter of claim 1, wherein: the spraying unit comprises a water supply assembly, a main pipe, a branch pipe and an atomizing nozzle; the water supply assembly is communicated with the main pipe, a plurality of branch pipes are arranged on the main pipe, and the tail ends of the branch pipes are fixedly connected with the atomizing nozzles; the spraying area of the spraying unit covers the whole masonry area in the shed.
6. A dust treatment method used in a coke oven refractory masonry shed is characterized by comprising the following steps:
step one, after the installation of a masonry shed is finished and before the construction of a coke oven is started, building the dust treatment system of claim 1 in the shed;
setting a threshold value of the dust processing system, and setting an upper limit threshold value and a lower limit threshold value of dust concentration through a control unit;
starting the dust treatment system when the coke oven masonry operation is started; the dust processing system monitors the dust concentration of the operation area in real time through a dust sensor;
when the detected value of the dust concentration reaches or exceeds the upper limit threshold of the dust concentration, the control unit respectively sends signals to the spraying unit and the dust removal unit, the spraying unit is started and starts spraying operation, and certain mass of dust particles freely fall to the ground through combination of the dust particles and water mist; the dust removal unit starts dust removal operation, and dust in the masonry shed is sucked into the dust removal unit;
step five, along with the gradual reduction of the dust concentration in the shed collected by the dust sensor, when the dust concentration value is lower than the lower limit threshold of the dust concentration, the control unit respectively sends out a stop operation signal to the spraying unit and the dust collection unit; before the coke oven masonry operation is finished, according to the real-time monitoring of the dust sensor, the dust treatment system repeats the fourth step and the fifth step;
and step six, after the masonry operation is finished, the dust treatment system can be closed, and operators are arranged to clean the slurry and dust scattered in the shed.
7. A dust treatment method according to claim 6, characterized in that: silica bricks and heat-insulating bricks need to be waterproof; when the dust treatment system works, the humidity sensor carries out real-time online monitoring on the air humidity of the operation area;
setting an upper air humidity threshold and a lower air humidity threshold through a control unit;
in the third step, only when the air humidity value detected by the humidity sensor is lower than the air humidity lower limit threshold value, the control unit sends an effective starting signal to the spraying unit; when the air humidity value is lower than the lower air humidity threshold, the spraying unit is still in a standby state even if the dust concentration value in the shed reaches the upper dust concentration threshold;
and step three or step four, when the air humidity value reaches or exceeds the air humidity upper limit threshold, even if the dust concentration value in the shed reaches the dust concentration upper limit threshold, the spraying unit still stops spraying operation.
8. A dust treatment method according to claim 6 or 7, characterized in that: a buzzer alarm is arranged in the dust removal system and is electrically and signally connected with the control unit;
setting a dust concentration alarm threshold value through a control unit, wherein the dust concentration alarm threshold value is higher than an upper limit threshold value of dust concentration;
when the dust concentration in the shed reaches or exceeds the dust concentration alarm threshold value, the control unit sends a signal to the buzzer alarm, and the buzzer alarm gives an alarm; at the moment, the operators should evacuate from the masonry shed in time;
when the dust concentration value is lower than the upper limit threshold of the dust concentration, the control unit sends a signal to the buzzer alarm, and the buzzer alarm stops giving an alarm; at this time, the worker enters the booth again to perform work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110078022.XA CN112807904A (en) | 2021-01-20 | 2021-01-20 | Dust treatment system and method for coke oven refractory masonry shed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110078022.XA CN112807904A (en) | 2021-01-20 | 2021-01-20 | Dust treatment system and method for coke oven refractory masonry shed |
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| CN112807904A true CN112807904A (en) | 2021-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114355837A (en) * | 2022-03-21 | 2022-04-15 | 中铁长安重工有限公司 | Intelligent control system and control method for dry type dust removal vehicle |
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| CN114355837A (en) * | 2022-03-21 | 2022-04-15 | 中铁长安重工有限公司 | Intelligent control system and control method for dry type dust removal vehicle |
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Application publication date: 20210518 |