CN111468265B - Coal blending weighing, screening and crushing system in air film coal yard - Google Patents
Coal blending weighing, screening and crushing system in air film coal yard Download PDFInfo
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- CN111468265B CN111468265B CN202010234036.1A CN202010234036A CN111468265B CN 111468265 B CN111468265 B CN 111468265B CN 202010234036 A CN202010234036 A CN 202010234036A CN 111468265 B CN111468265 B CN 111468265B
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- 239000003245 coal Substances 0.000 title claims abstract description 184
- 238000012216 screening Methods 0.000 title claims abstract description 49
- 238000005303 weighing Methods 0.000 title claims abstract description 47
- 238000002156 mixing Methods 0.000 title claims abstract description 37
- 239000000428 dust Substances 0.000 claims abstract description 69
- 230000001629 suppression Effects 0.000 claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 238000007664 blowing Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 3
- 241000876443 Varanus salvator Species 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/04—Safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a coal blending weighing, screening and crushing system in a gas film coal yard, which comprises a gas film yard system surrounding the coal yard and a coal blending weighing, screening and crushing system arranged in the gas film yard system, wherein the coal blending weighing, screening and crushing system comprises two weighing coal feeders and a screening and crushing integrated machine, and the weighing coal feeders are connected with the screening and crushing integrated machine through a belt conveyer; the gas film yard system is internally provided with a coal blocking wall, a gas film, a monitoring unit, a blower system, spraying dust suppression equipment and an automatic control system. According to the invention, coal blending is realized in the air film storage yard system, and the mixed coal is screened and crushed into a whole, so that the dust and equipment investment are reduced; the components and the installation positions of the monitoring unit, the air blowing system and the spraying dust suppression equipment are optimized in the air film storage yard system, the full-closed environment-friendly technical requirement of the coal yard is met, the dust condition in the coal yard is monitored in real time and automatically, and the zero emission of coal dust is achieved.
Description
Technical Field
The invention belongs to the technical fields of thermal power plants and coal chemical industry, and particularly relates to a coal blending weighing, screening and crushing system in a gas film coal yard.
Background
In the prior art, in order to inhibit coal dust in a coal yard, a wind shielding dust suppression net structure is generally adopted, coal is generally discharged in a vehicle form, and the coal dust is particularly large when the vehicle is used for discharging coal and the coal yard is operated. The adoption of the wind shielding dust suppression net can solve the following problems: on one hand, the dust emission of coal yards affects the air quality and is difficult to treat, and the national environmental protection standard is gradually improved, so that the inspection of environmental protection departments is more and more strict, and the wind shielding dust suppression net cannot meet new environmental protection requirements; on the other hand, the wind shielding dust suppression net is greatly influenced by natural environment, when the seasonal wind is large in Xinjiang and other places at the project site, a large amount of coal dust can be taken away by strong wind in the site coal yard, the loss of coal saving in windy and rainy seasons is serious, and the quality of coal burning is influenced.
Therefore, researchers propose to adopt a gas film coal yard, and the gas film coal yard system can overcome the situations that dust is seriously dispersed around when coal is fed in the operation of the original coal yard and the original wind shielding dust suppression net is not tightly sealed and seriously leaked when strong monsoon comes. However, the adoption air film only integrally realizes the sealing of the inside and the outside of the air film from the form, the dust suppression requirement exists in the actual air film, in addition, the inside and the outside of the air film need to be communicated with each other, the dust suppression control needs to be carried out in the air film to realize real zero emission, and particularly, the problem that how to control the inside and the outside environment of the coal yard is needed to be solved is urgent for the situation that coal blending needs to be carried out in the air film coal yard.
Disclosure of Invention
The invention aims to solve the problems, and provides a coal blending weighing, screening and crushing system in a gas film coal yard, which can effectively control the environment inside and outside a gas film, solve the problem of large coal blending dust in the gas film coal yard, and realize the real zero emission of the gas film coal yard.
The technical content of the invention is as follows:
a blending, weighing, screening and crushing system in a gas film coal yard, comprising:
the coal blending weighing, screening and crushing system comprises at least two weighing coal feeders and screening and crushing integrated machines, wherein the weighing coal feeders are connected with the screening and crushing integrated machines through belt conveyors;
The gas film storage yard system surrounding the coal storage yard comprises a coal blocking wall, a gas film, a monitoring unit, a blowing system, spraying dust suppression equipment and an automatic control system, wherein the coal blocking wall is provided with an outer air outlet, the gas film is arranged on the coal blocking wall and used for sealing the coal storage yard, the monitoring unit is arranged inside the gas film and used for monitoring dangerous gas and operation condition parameters, the monitoring unit is in communication connection with the automatic control system, and the automatic control system is connected with the blowing system and the spraying dust suppression equipment;
The weighing coal feeder is arranged in a storage pit of the air film storage yard system, the spraying dust suppression equipment is arranged at a material transferring position of the coal blending weighing, screening and crushing system, and the screening and crushing integrated machine is arranged outside the air film storage yard system.
According to a specific scheme of the coal blending weighing, screening and crushing system in the gas film coal yard, the gas film coal yard further comprises fire fighting equipment, the monitoring unit comprises a carbon monoxide sensor, a dust concentration sensor, a gas sensor, a temperature sensor and an infrared scanner, and the carbon monoxide sensor, the dust concentration sensor, the gas sensor and the infrared scanner are further connected with an alarm.
According to a specific scheme of the coal blending weighing, screening and crushing system in the gas film coal yard, the outer air outlet is connected with the dust remover, and the air outlet in the gas film coal yard is filtered by the dust remover and then discharged after reaching the qualified standard.
According to a specific scheme of the coal blending weighing, screening and crushing system in the air film coal yard, the coal blocking wall is further provided with a plurality of adjusting air outlets.
According to a specific scheme of the coal blending weighing, screening and crushing system in the gas film coal yard, the spraying dust suppression device further comprises a movable remote mist sprayer.
According to a specific scheme of the coal blending weighing, screening and crushing system in the gas film coal yard, the monitoring unit further comprises a panoramic camera.
According to a specific scheme of the coal blending weighing, screening and crushing system in the gas film coal yard, the monitoring unit further comprises a pressure sensor, and the automatic control system automatically controls the air pressure in the gas film according to the pressure sensor and automatically ventilates and ventilates regularly.
According to the specific scheme of the coal blending weighing, screening and crushing system in the air film coal yard, a plurality of air locking channel doors are arranged on the coal blocking wall, and the air locking channel doors are double-layer doors.
According to the concrete scheme of the coal blending weighing, screening and crushing system in the air film coal yard, the air blowing system and the outer air outlet are respectively arranged on the opposite sides of the air film coal yard system.
According to the concrete scheme of the coal blending weighing, screening and crushing system in the air film coal yard, an outlet which only allows the belt conveyor to pass through is formed in the position, penetrating through the air film, of the belt conveyor, and the air blowing system is arranged on the outer side of the air film and close to the outlet, through which the belt conveyor passes, of the belt conveyor, and in the operation process of the belt conveyor, the air blowing system continuously operates for supplementing air.
Due to the adoption of the technical scheme, the invention has the advantages that: according to the coal blending weighing, screening and crushing system in the air film coal yard, coal blending is realized in the air film coal yard system, the screening and crushing integrated machine is arranged outside the air film coal yard system to carry out primary screening and crushing on mixed coal, the requirements of qualified coal burning of a boiler can be met, the transfer times can be reduced, dust can be correspondingly reduced, and investment can be saved for owners; according to the invention, the monitoring unit, the air blowing system and the spraying dust suppression equipment are arranged in the air film storage yard system, and the installation positions of related equipment are optimized, so that the full-closed environment-friendly technical requirement of a coal yard can be better met, the dust condition in the coal yard is monitored in real time and automatically, the zero emission of coal dust is basically realized, and compared with the existing dust suppression technology, the maintenance of a dust suppression net, the material covering and the cleaning water-airing cost can be saved each year; the coal shed is built by adopting the air film, so that the building speed is high, the environment is protected, and the popularization is worth.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a gas film coal yard;
Fig. 2 is a schematic diagram of a weighing, screening and crushing system of an embodiment.
The drawing shows that 1 is an air film, 2 is a dust remover, 3 is an automatic fire water monitor, 4 is a movable remote mist sprayer, 5 is spraying dust suppression equipment, 6 is a gas locking channel door, 7 is a coal blocking wall, 8 is a blower, 9 is a temperature sensor, 10 is a pressure sensor, 11 is an infrared scanner, 12 is a carbon monoxide sensor, 13 is a gas sensor, 14 is a dust concentration sensor, 15 is a panoramic camera, 16 is an automatic control system, 17 is a coal dropping hopper, 18 is a weighing coal feeder, 19 is a belt conveyor, and 20 is a screening and crushing integrated machine.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Examples:
a coal blending weighing, screening and crushing system in a gas film coal yard comprises a coal blending weighing, screening and crushing system and a gas film yard system surrounding the coal yard.
As shown in fig. 1-2, the coal blending weighing, screening and crushing system comprises two weighing coal feeders 18 and a screening and crushing integrated machine 20, wherein the screening and crushing integrated machine 20 is positioned outside the air film storage yard system, and the weighing coal feeders 18 are connected with the screening and crushing integrated machine 20 through a belt conveyor 19. Specifically, the weighing coal feeders 18 have a coal hopper 17, and the weighing coal feeders 18 are grouped to weigh the good coal and the bad coal, respectively. The weighing coal feeder 18 is used as the prior art, and on the one hand, weighing data can be transmitted to the central control room in real time, and on the other hand, the coal feeding rate of the weighing coal feeder can be adjusted through the central control room or the site so as to adjust the mixing ratio of the good coal and the bad coal. The screening integrated crusher 19 is used as the prior art, and can screen and crush the mixed coal, specifically, the mixed coal is screened firstly, then larger particles in the mixed coal are hammered and stirred in a machine body through a hammer head rotating at a high speed, and the good coal and the poor coal can be mixed and reach the qualified granularity of boiler combustion. According to the invention, the screening and crushing integrated machine is selected to achieve the crushing granularity once, so that the repeated transportation and the back-up transportation process are reduced, and the coal dust is prevented from diffusing.
The existing coal blending general operation is that coal and inferior coal are loaded in a hopper for a coal yard, the hopper is connected with a vibrating feeder, and then enters a belt conveyor with a belt scale capable of weighing, enters a collecting hopper, and then enters a double-shaft stirrer after passing through an electric feeder. The double-shaft stirrer uniformly stirs the good coal and the inferior coal, then the good coal and the inferior coal enter a belt conveyor, the good coal and the inferior coal are conveyed to a vibrating screen through the belt conveyor, and the bulk materials of the mixed coal after passing through the vibrating screen are conveyed to a boiler together with qualified granularity below the screen after being crushed by a hammer crusher. The process is complex, the occupied area is large, and the number of times of transportation is large, so that dust in a coal yard is large. Compared with the existing general operation of coal blending, the scheme simplifies the process, reduces the occupied area, has more transportation times and can effectively reduce dust in a coal yard.
As shown in fig. 2, the air film storage yard system comprises a coal blocking wall 7, an air film 1, a monitoring unit, a blower system 8, a spraying dust suppression device 5 and an automatic control system 16. The coal retaining wall 7 is arranged around the coal yard in a circle, the air film 1 is arranged on the basic coal retaining wall 7 to seal the coal yard, and the coal pile is stored in the coal retaining wall 7. The coal blocking wall 7 is provided with an outer air outlet, and the air in the air film 1 is discharged from the outer air outlet through the air draft equipment. The air film 1 is an inclined steel cable aerated film type structure, and the requirement of longitudinal and transverse rigidity of the air film structure under the action of main load is met. The air film 1 is a light film material, air is injected into a closed space formed by a polymer composite film material, and a certain pressure difference between the inside and the outside of the closed space is kept, so that the film surface is pulled to ensure rigidity, an inclined net-shaped steel cable structure is arranged outside the air film structure, the middle part of the air film structure is not required to be supported, the form is maintained, and the air film structure resists external wind load, so that a large-span beam-free and column-free building space is constructed. The built closed air film coal yard has no bent, torsion and compression components and no frame or beam column support, and the space is fully utilized, which is favorable for the running and operation of large machinery in the coal yard. The air film 1 has the functions of wear resistance, corrosion resistance, ageing resistance, microbial corrosion resistance, ultraviolet radiation and the like, meanwhile, the fireproof level reaches the primary standard, and the air film can fully utilize sunlight in daytime without light supplement. The anchor fixing of the air film coal shed distributes the tension of the film material evenly to the ground beam of the coal blocking wall. The monitoring unit is arranged in the air film and used for monitoring dangerous gas and operation condition parameters. Specifically, the monitoring unit preferably includes a carbon monoxide sensor 12, a dust concentration sensor 14, a gas sensor 13, a temperature sensor 9 and an infrared scanner 11, wherein the carbon monoxide sensor 12, the dust concentration sensor 14, the gas sensor 13 and the infrared scanner 11 are also connected with an alarm. The infrared scanner 11 detects whether an open fire exists in the coal yard. The elements in the monitoring unit are in communication connection with an automatic control system 16, which can be a mature DCS control system, the automatic control system 16 is connected with a blowing system, the blowing system 8 is preferably a variable frequency blower, and the outlet of the variable frequency blower unit is communicated with an air inlet on the side face of the coal blocking wall 7. And once the concentration of dust or toxic and harmful gas exceeds the monitoring condition early warning value of each sensor, the alarm can automatically alarm, and the automatic control system simultaneously starts the variable-frequency blower unit to change fresh air into the field. The spray dust suppression device 5 is used as the prior art, and mainly sprays fog particles into the air, the fog particles and the dust particles are effectively adsorbed and coalesced into a group, and the dust suppression and dust suppression effects are realized by gravity sedimentation. The spray dust suppression device 5 is arranged at the material transfer in the coal screening and crushing system, in this embodiment between the coal pile and the weighing feeder 18. The spraying dust suppression equipment 5 is also connected with the automatic control system 16, a large amount of coal ash can be generated when the coal shed works, the sight and the health and safety of operators in the coal shed are affected, the automatic control system 16 controls the spraying dust suppression equipment 5, the range covers the coal pile and the working range, the dust concentration of the air film totally-enclosed coal bunker is reduced in a small amount of multiple spraying or atomizing modes, and the water can be saved while the potential safety hazard is reduced. And once the concentration of dust and toxic and harmful gas exceeds the early warning value, the automatic warning is automatically performed, and meanwhile, spraying or atomizing equipment is started, so that the safety of workers in a coal yard is ensured.
In the embodiment, the outer air outlet is connected with the dust remover 2, and the in-field air outlet reaches the qualified standard after being filtered by the dust remover 2 and is discharged, so that the coal dust is prevented from diffusing in the external space.
In this embodiment, keep off the coal wall and still set up a plurality of regulation air exit, adjust the air exit dispersion setting on keeping off the coal wall, can guarantee that the dust density in the storehouse keeps at the safe value, prevent the explosion that local area arouses because of the dust density is too high.
In this embodiment, the spray dust suppression device 5 further comprises a mobile remote mist sprayer 4, which can be manually controlled to perform mobile mist spraying in a coal yard. When the horsepower of the spraying dust suppression device is fully opened and can not meet the requirements when a large amount of coal is discharged from an automobile or the dust concentration is high and alarms, the movable remote mist sprayer 4 can reduce the dust concentration by throwing the water mist to a dust emission point, and the device is beneficial to supplement the spraying dust suppression device 5.
In this embodiment, the monitoring unit further includes a panoramic camera 15, and in the central control room, the conditions inside the building can be monitored in real time through the panoramic camera 15 and the various sensor early warning systems, so that the cost of the on-duty personnel is saved, and a good working environment is provided for the operation personnel.
In this embodiment, the monitoring unit further comprises a pressure sensor 10, and the automatic control system 16 automatically controls the air pressure in the air film and automatically ventilates and ventilates at regular time according to the pressure sensor. By adopting the replacement ventilation principle, the ventilation efficiency coefficient is greatly higher than that of the common ventilation, the air quality in the coal shed is improved, the concentration of floating dust in the air is reduced, the operation health risk of staff is reduced, and the fire-fighting acceptance requirement is met.
In this embodiment, a plurality of gas locking channel doors 6 are arranged on the coal blocking wall, and the gas locking channel doors 6 are double-layer doors. People and equipment vehicles can enter and exit through the air locking access door 6, and the double door design can prevent the leakage of internal air.
In this embodiment, the blower system 8 and the external air outlet are respectively disposed at opposite sides of the air film yard system, so as to realize convection of air in the air film yard system, and ensure sufficient replacement of air in the system.
In this embodiment, the belt conveyor passes through the air film and is provided with an outlet which only allows the belt conveyor to pass through, and the blower system 8 is arranged outside the air film 1 and is close to the outlet which the belt conveyor passes through, and in the operation process of the belt conveyor, the blower system continuously operates to supplement air. The size of the outlet of the belt conveyor is strictly controlled, and the air supply of the air blowing system is implemented in the transmission process, so that fresh air can be continuously supplied to the outlet, and the possible air leakage condition at the outlet is reduced.
In this embodiment, be provided with fire-fighting equipment in the air film coal yard, fire-fighting equipment is preferably automatic fire water monitor 3, and automatic fire water monitor can trace the automatic water spray of firing point and put out a fire when the coal yard has the conflagration condition, also can manual fire-fighting of manual control fire water monitor.
According to the coal blending weighing, screening and crushing system in the air film coal yard, coal blending is realized in the air film coal yard, and the screening and crushing integrated machine is arranged outside the air film coal yard to carry out primary screening and crushing on mixed coal, so that the requirements of qualified coal burning of a boiler can be met, the transfer times can be reduced, dust can be correspondingly reduced, and investment can be saved for owners; according to the invention, the monitoring unit, the air blowing system and the spraying dust suppression equipment are arranged in the air film coal yard, and the installation positions of related equipment are optimized, so that the full-closed environment-friendly technical requirement of the coal yard can be better met, the dust condition in the coal yard is monitored in real time and automatically, the zero emission of coal dust is basically realized, and compared with the existing dust suppression technology, the maintenance of a dust suppression net, the material covering and the cleaning water-airing cost can be saved each year; the coal shed is built by adopting the air film, so that the building speed is high, the environment is protected, and the popularization is worth.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The utility model provides a blending coal in air film coal yard weighs screening crushing system which characterized in that includes:
The coal blending weighing, screening and crushing system comprises two weighing coal feeders and screening and crushing integrated machines, wherein the weighing coal feeders are connected with the screening and crushing integrated machines through belt conveyors;
The gas film storage yard system surrounding the coal storage yard comprises a coal blocking wall, a gas film, a monitoring unit, a blowing system, spraying dust suppression equipment and an automatic control system, wherein the coal blocking wall is provided with an outer air outlet, the gas film is arranged on the coal blocking wall and used for sealing the coal storage yard, the monitoring unit is arranged inside the gas film and used for monitoring dangerous gas and operation condition parameters, the monitoring unit is in communication connection with the automatic control system, and the automatic control system is connected with the blowing system and the spraying dust suppression equipment;
The weighing coal feeder is arranged in a storage pit of the air film storage yard system, the spraying dust suppression equipment is arranged at a material transferring position of the coal blending weighing, screening and crushing system, and the screening and crushing integrated machine is arranged outside the air film storage yard system;
the gas film coal yard further comprises fire equipment, the monitoring unit comprises a carbon monoxide sensor, a dust concentration sensor, a gas sensor, a temperature sensor and an infrared scanner, and the carbon monoxide sensor, the dust concentration sensor, the gas sensor and the infrared scanner are further connected with an alarm;
the outer exhaust port is connected with a dust remover, and the in-field air outlet is filtered by the dust remover and then discharged after reaching the qualified standard;
The monitoring unit also comprises a pressure sensor, the automatic control system automatically controls the air pressure in the air film according to the pressure sensor and automatically ventilates and ventilates at fixed time, and the air outlet is opened or closed by a valve according to the parameters of the pressure sensor;
A plurality of gas locking channel doors are arranged on a coal blocking wall in the gas film coal yard, and the gas locking channel doors are double-layer doors;
The air blowing system and the outer air outlet are respectively arranged at the opposite sides of the air film storage yard system;
The belt conveyor passes through the air film and is provided with an outlet which only allows the belt conveyor to pass through, the air blowing system is arranged at the outer side of the air film and is close to the outlet which the belt conveyor passes through, and in the operation process of the belt conveyor, the air blowing system continuously operates to supplement air.
2. The system of claim 1, wherein the coal baffle wall of the gas film coal yard is further provided with a plurality of air vents.
3. The coal blending, weighing, screening and crushing system in a gas film coal yard of claim 1, wherein said spray dust suppression apparatus further comprises a mobile remote mist sprayer.
4. The coal blending, weighing, screening and crushing system in a gas film coal yard of claim 1, wherein the monitoring unit further comprises a panoramic camera.
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| CN202010234036.1A CN111468265B (en) | 2020-03-30 | 2020-03-30 | Coal blending weighing, screening and crushing system in air film coal yard |
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| CN202010234036.1A CN111468265B (en) | 2020-03-30 | 2020-03-30 | Coal blending weighing, screening and crushing system in air film coal yard |
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| CN109879073B (en) * | 2019-04-12 | 2024-04-05 | 西安西热锅炉环保工程有限公司 | Safety protection system of high-volatile-component coal-fired air film totally-enclosed coal yard |
| CN112539498B (en) * | 2020-11-27 | 2022-04-15 | 杭州意能电力技术有限公司 | Automatic control interlocking logic for differential pressure of gas film coal yard |
| CN112857578A (en) * | 2021-01-08 | 2021-05-28 | 湖南中冶长天节能环保技术有限公司 | High-temperature detection and dust removal method and system for activated carbon flue gas purification device |
| CN113863988A (en) * | 2021-10-28 | 2021-12-31 | 安徽理工大学 | Coal mine large-range dust monitoring system and method |
| CN114484675B (en) * | 2022-02-10 | 2024-04-26 | 西安西热锅炉环保工程有限公司 | Air film totally-enclosed coal yard environment adjusting system and method |
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| CN212493371U (en) * | 2020-03-30 | 2021-02-09 | 中国成达工程有限公司 | Coal blending weighing, screening and crushing system in gas film coal yard |
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| US4592516A (en) * | 1983-08-03 | 1986-06-03 | Quadracast, Inc. | Coal breaker and sorter |
| DD268985A1 (en) * | 1985-07-05 | 1989-06-14 | Orgreb Inst Kraftwerke | METHOD AND ARRANGEMENT FOR PREPARING RAW COAL FOR A CARBURIZING STEAM, ESPECIALLY FOR A STEAM GENERATOR |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212493371U (en) * | 2020-03-30 | 2021-02-09 | 中国成达工程有限公司 | Coal blending weighing, screening and crushing system in gas film coal yard |
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