CN113834299A

CN113834299A - Material drying system and control method thereof

Info

Publication number: CN113834299A
Application number: CN202110950226.8A
Authority: CN
Inventors: 袁丽娜; 李姜; 叶泽龙; 刘振; 李海龙
Original assignee: Changxing Kibing Glass Co ltd
Current assignee: Changxing Kibing Glass Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-12-24
Anticipated expiration: 2041-08-18
Also published as: CN113834299B

Abstract

The invention relates to the technical field of producing curtain wall thick glass by adopting a float process, and provides a material drying system and a control method thereof. This material drying system includes hot-blast pipeline, lower feed bin, drying-machine, scraper conveyor and updraft ventilator, and the drying-machine has pan feeding mouth and discharge gate, and hot-blast pipeline is used for providing hot-blast to the inside of drying-machine, and updraft ventilator's air inlet end communicates in the discharge gate, and updraft ventilator's air-out end is connected with the dust removal filter bag, and updraft ventilator is arranged in extracting the gas in the drying-machine to make the inside of drying-machine form the negative pressure. According to the material drying system provided by the invention, hot air is introduced into the dryer through the material inlet, and air is extracted from the material outlet by the air extracting device, so that the hot air flows in the dryer, the material is dried quickly, the drying effect is good, the technical problems of long material dehydration time and high water content in the prior art are solved, the material moisture can better meet the requirements of the production process, and the quality of thick curtain wall glass is indirectly improved.

Description

Material drying system and control method thereof

Technical Field

The invention relates to the technical field of float glass production, in particular to a material drying system and a control method thereof.

Background

Float glass production furnaces require a large amount of heat energy to melt the batch into molten glass. Petroleum coke is used as a fuel to provide heat energy for melting materials in the melting furnace through combustion. However, petroleum coke has a large amount of water in the processing process, and proper water must be controlled before finished powder is produced and burned, so that the burning quality and the burnout rate are guaranteed, and the heat energy loss is reduced.

The prior material drying system for drying petroleum coke has the following defects:

firstly, the finished powder is prepared after natural dehydration (easily influenced by seasons) by placing, the water content and the moisture of the finished powder fluctuate greatly, and the problems of poor combustion quality, large fluctuation, high energy consumption and serious influence on the yield exist.

Secondly, the petroleum coke is dehydrated in a natural dehydration mode, the dehydration time is long, the inventory is increased, and a large amount of funds are occupied.

Thirdly, in order to reduce the water content, the grinding time is prolonged in the petroleum coke processing process, so that the granularity of finished powder is fine (further combustion foaming and outburst are caused, the combustion quality is poor, the yield is low), the equipment loss is large, the fault rate is high, and the power consumption is high.

Fourthly, the high water content of the petroleum coke can increase the grinding time and the power consumption.

Fifthly, the high water content of the petroleum coke can cause serious blockage of a combustion conveying pipeline, the stable operation of equipment is influenced, the workload of operators is large, and the petroleum coke is especially serious in winter.

Therefore, the conventional petroleum coke dehydration has the technical problems of long dehydration time and high water content.

Disclosure of Invention

The invention aims to provide a material drying system and a control method thereof, and aims to solve the technical problems of long dehydration time and high water content of the conventional petroleum coke.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a material drying system, includes hot-blast pipeline, lower feed bin, drying-machine, scraper conveyor and updraft ventilator, the drying-machine has pan feeding mouth and discharge gate, hot-blast pipeline with pan feeding mouth intercommunication, hot-blast pipeline be used for to the inside of drying-machine provides hot-blast, updraft ventilator's air inlet end communicate in the discharge gate, updraft ventilator's air-out end is connected with the dust removal filter bag, updraft ventilator is used for the extraction gas in the drying-machine, so that the inside of drying-machine forms the negative pressure, lower feed bin with pan feeding mouth intercommunication, scraper conveyor's one end with the discharge gate intercommunication, scraper conveyor's the other end be used for with the grinding system intercommunication.

In one of them embodiment, material drying system still includes annealing kiln waste heat induced air device, annealing kiln waste heat induced air device includes fan, manifold and a plurality of induced air pipe, a plurality of induced air pipe's one end is used for respectively with the air outlet intercommunication in each district of annealing kiln, a plurality of induced air pipe's the other end with manifold intercommunication, manifold with the air inlet end intercommunication of fan, hot-blast pipeline with the air-out end intercommunication of fan.

In one embodiment, the plurality of induced draft pipes are arranged on branch switch valves, the collecting pipe and/or the hot air conveying pipeline are/is provided with a main switch valve, and at least one of the collecting pipe, the fan and the hot air conveying pipeline is provided with a temperature detection device.

In one embodiment, the dryer comprises a rotary driving device, a supporting seat, an outer cylinder, a middle cylinder and an inner cylinder which are sequentially sleeved, wherein the feeding port is formed in one end of the inner cylinder, the other end of the inner cylinder is communicated with one end, far away from the feeding port, of the middle cylinder, one end, close to the feeding port, of the middle cylinder is communicated with one end, close to the feeding port, of the outer cylinder, and the discharging port is formed in one end, far away from the feeding port, of the outer cylinder;

the inner wall of the inner barrel is provided with a plurality of first stirring plates, the inner wall of the middle barrel is provided with a plurality of second stirring plates, the inner wall of the outer barrel is provided with a plurality of third stirring plates, the inclination directions of the first stirring plates and the third stirring plates are the same, and the inclination direction of the second stirring plates is opposite to the inclination direction of the first stirring plates, so that the inner barrel and the outer barrel can positively transmit materials, and the middle barrel reversely transmits the materials;

the outer cylinder is rotatably arranged on the supporting seat, the rotary driving device is connected with the outer cylinder, and the rotary driving device is used for driving the outer cylinder to rotate.

In one embodiment, a plurality of first stirring plates are distributed at intervals along the circumferential direction of the inner cylinder to form a first plate group; the multiple groups of first plate groups are distributed at intervals along the axis of the inner cylinder, and the two adjacent groups of first plate groups are arranged in a staggered manner.

In one embodiment, the first stirring plate is a spiral plate, at least part of the back surface of the first stirring plate is provided with an obliquely arranged flow guide straight plate in a protruding mode, and the obliquely arranged flow guide straight plate can guide the material to flow from one end of the inner barrel to the other end of the inner barrel.

In one embodiment, a plurality of second stirring plates are distributed at intervals along the circumferential direction of the middle drum to form a second plate group; the plurality of groups of second plate groups are distributed at intervals along the axis of the middle cylinder, the inner wall of the middle cylinder is also provided with a plurality of first rectangular plates, and the plurality of first rectangular plates are distributed at intervals along the circumferential direction of the middle cylinder to form a third plate group; the third plate group is positioned between two adjacent groups of the second plate groups.

In one embodiment, a plurality of third stirring plates are distributed at intervals along the circumferential direction of the outer barrel to form a fourth plate group; the plurality of groups of fourth plate groups are distributed at intervals along the axis of the outer barrel, a plurality of second rectangular plates are further arranged on the inner wall of the outer barrel, and the plurality of second rectangular plates are distributed at intervals along the circumferential direction of the outer barrel to form a fifth plate group; the fifth plate group is positioned between two adjacent groups of the fourth plate groups.

In one embodiment, the discharge end of the air draft device is provided with a discharger, and the discharger is connected with the scraper conveyor through a spiral reamer mechanism.

In one embodiment, the number of the air draft devices is more than two, the discharger and the spiral reamer mechanisms are in one-to-one correspondence with the air draft devices, and the spiral reamer mechanisms are connected to the middle of the scraper conveyor at intervals.

In one embodiment, the material drying system further comprises an air hammer, wherein the air hammer is arranged below the lower bin and is used for preventing blockage in the lower bin;

in one embodiment, the material drying system further comprises an exhaust valve, the exhaust valve is installed on the dryer, and the exhaust valve is used for controlling the dryer to be communicated with the outside air.

The invention also provides a control method of the material drying system, which comprises the following steps:

s100: starting a hot air conveying pipeline and an air draft device;

s200: starting a scraper conveyor when first preset time is reached after the hot air conveying pipeline and the air draft device are started, communicating the hot air conveying pipeline and the dryer, and closing an exhaust valve of the dryer;

s300: starting the dryer after the internal temperature of the dryer reaches a first preset temperature;

s400: and when the second preset time is reached after the dryer is started, the discharging bin conveys materials to the dryer through the feeding port of the dryer.

In one embodiment, the method comprises: in step S300, within a third preset time, the internal temperature of the dryer does not reach the first preset temperature, and an alarm signal is sent.

In one embodiment, the method comprises: before step S100, the internal temperature of the dryer reaches a second preset temperature, and an alarm signal is sent.

The material drying system and the control method thereof provided by the invention have the beneficial effects that: introduce the drying-machine through the pan feeding mouth with hot-blast to adopt updraft ventilator to extract gas from the discharge gate, thereby realize hot-blast inside flowing at the drying-machine, make the material obtain quick drying through the drying-machine, it is effectual to dry, solves the long and high technical problem of moisture content of current petroleum coke dehydration time, thereby has reduced the stoving time, and the material moisture content is low.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a layout diagram of a material drying system according to an embodiment of the present invention;

FIG. 2 is a view in the direction C of FIG. 1;

FIG. 3 is a top view of FIG. 1;

fig. 4 is a further perspective view of the material drying system according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of an annealing kiln waste heat air inducing device of the material drying system provided in the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a dryer of a material drying system according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 6;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 6;

FIG. 10 is an enlarged view taken at D in FIG. 9;

fig. 11 is a process flow diagram of a material drying system according to an embodiment of the present invention;

fig. 12 is a schematic flowchart of a control method of a material drying system according to an embodiment of the present invention;

FIG. 13 is a graph comparing effect data of natural dehydration and a material drying system.

Wherein, in the figures, the respective reference numerals:

101. a hot air delivery duct; 102. a fan; 103. a manifold; 104. an induced draft pipe; 105. a branch switch valve; 106. a main on-off valve; 107. a temperature detection device;

200. discharging a bin; 210. an air hammer;

300. a dryer; 301. a feeding port; 302. a discharge port; 310. a rotation driving device; 320. a supporting seat; 330. an outer cylinder; 331. a third stirring plate; 332. a fourth plate group; 333. a second rectangular plate; 334. a fifth plate group; 340. a middle cylinder; 341. a second stirring plate; 342. a second plate group; 343. a first rectangular plate; 344. a third plate group; 350. an inner barrel; 351. a first stirring plate; 352. a first plate group; 353. a flow guide straight plate;

400. a scraper conveyor;

510. an air draft device; 520. a discharger; 530. spiral reamer mechanism.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to fig. 3, a material drying system in an embodiment of the present invention will now be described. This material drying system includes hot-blast pipeline 101, lower feed bin 200, drying-machine 300, scraper conveyor 400 and updraft ventilator 510, drying-machine 300 has pan feeding mouth 301 and discharge gate 302, hot-blast pipeline 101 and pan feeding mouth 301 intercommunication, hot-blast pipeline 101 is used for providing hot-blast to drying-machine 300's inside, updraft ventilator 510's air inlet end communicates in discharge gate 302, updraft ventilator 510's air-out end is connected with the dust removal filter bag, the dust removal filter bag can collect the wind-dust mixture, eliminate the raise dust. The air extracting device 510 is used for extracting air in the dryer 300 so that negative pressure is formed inside the dryer 300, the lower bin 200 is communicated with the feeding port 301, one end of the scraper conveyor 400 is communicated with the discharging port 302, and the other end of the scraper conveyor 400 is communicated with the grinding system.

When above-mentioned material drying system used, the material gets into drying-machine 300 through feed bin 200 and pan feeding mouth 301 down, hot-blast entering drying-machine 300 through pan feeding mouth 301, and be taken out from discharge gate 302 by updraft ventilator 510, make hot-blast at the inside fast flow of drying-machine 300, make the material obtain fast drying through drying-machine 300, and it is effectual to dry, the material after the stoving is carried to grinding system by scraper conveyor 400, in order to process into powder, solve the long and high technical problem of moisture content of current petroleum coke dehydration time, thereby the drying time has been reduced, and the material moisture content is low.

In some embodiments, the material drying system further includes a feeder abutting against the lower bin 200, and the feeder is configured to provide the material to the lower bin 200, so as to achieve automatic feeding.

In some embodiments, referring to fig. 2, the material drying system further includes an air hammer 210, wherein the air hammer 210 is disposed below the lower bin 200, and the air hammer 210 is used for preventing the lower bin 200 from being blocked.

In some embodiments, the hot air delivered by the hot air delivery duct 101 refers to a gas having a temperature greater than or equal to 80 ℃.

In an embodiment, referring to fig. 5, the material drying system further includes an annealing kiln waste heat induced air device, the annealing kiln waste heat induced air device includes a fan 102, a collecting pipe 103 and a plurality of induced air pipes 104, one end of each of the plurality of induced air pipes 104 is respectively used for communicating with an air outlet of each area of the annealing kiln, the other end of each of the plurality of induced air pipes 104 is communicated with the collecting pipe 103, the collecting pipe 103 is communicated with an air inlet end of the fan 102, and the hot air delivery pipe 101 is communicated with an air outlet end of the fan 102.

So, the material drying system that this embodiment provided can retrieve the high temperature waste heat of annealing kiln through induced duct 104 to gather to collecting pipe 103, then carry to drying-machine 300 through fan 102 and hot-blast pipeline 101 again for the stoving of material, the high temperature waste heat of make full use of annealing kiln saves the stoving cost, reduces the power consumption.

Wherein, the plurality of roots means one, two, three or more than three. For example, the number of the induced draft tubes 104 is four, and the four induced draft tubes 104 are respectively communicated with the zone a, the zone B1, the zone B2 and the zone C of the annealing kiln, so as to recycle the high-temperature waste heat of the annealing kiln.

Specifically, the plurality of induced draft pipes 104 are installed on branch switch valves 105, the collection pipe 103 or the hot air delivery pipe 101 is installed with a main switch valve 106, and at least one of the collection pipe 103, the blower 102 and the hot air delivery pipe 101 is installed with a temperature detection device 107. The branch switch valve 105 is used for controlling the on-off of the induced draft pipe 104, the main switch valve 106 is used for controlling the on-off of the hot air conveying pipeline 101, and the temperature detection device 107 is used for controlling the air temperature, so that the hot air quantity and the air temperature supplied by the hot air conveying pipeline 101 are effectively controllable, and the dehydration rate of the material can be effectively controlled.

Optionally, the branch switching valve 105 and the main switching valve 106 are both electric switching valves for easy control.

Optionally, the fan 102 is a variable frequency fan, so as to control the air volume.

It will be appreciated that in other embodiments, the manifold 103 and the hot blast delivery duct 101 are each fitted with a main on/off valve 106.

In one embodiment, referring to fig. 6 to 8, the dryer 300 includes a rotary driving device 310, a supporting base 320, an outer barrel 330, an intermediate barrel 340 and an inner barrel 350, which are sequentially sleeved, wherein one end of the inner barrel 350 is provided with a material inlet 301, the other end of the inner barrel 350 is communicated with one end of the intermediate barrel 340 far away from the material inlet 301, one end of the intermediate barrel 340 near the material inlet 301 is communicated with one end of the outer barrel 330 near the material inlet 301, and one end of the outer barrel 330 far away from the material inlet 301 is provided with a material outlet 302.

The inner wall of the inner cylinder 350 is provided with a plurality of first stirring plates 351, the inner wall of the middle cylinder 340 is provided with a plurality of second stirring plates 341, the inner wall of the outer cylinder 330 is provided with a plurality of third stirring plates 331, the inclination directions of the first stirring plates 351 and the third stirring plates 331 are the same, and the inclination direction of the second stirring plates 341 is opposite to that of the first stirring plates 351, so that the inner cylinder 350 and the outer cylinder 330 can positively transmit materials, and the middle cylinder 340 can reversely transmit materials.

The outer cylinder 330 is rotatably mounted on the supporting base 320, and the rotary driving device 310 is connected to the outer cylinder 330, and the rotary driving device 310 is used for driving the outer cylinder 330 to rotate.

Wherein, the material gets into inner tube 350 through pan feeding mouth 301, along with inner tube 350 upset to being raised by first stirring board 351, increase with hot-blast area of contact, flow to the other end of inner tube 350 from one end of inner tube 350, and get into well section of thick bamboo 340. The material is in well section of thick bamboo 340, and the one end flow direction that is kept away from pan feeding mouth 301 from well section of thick bamboo 340 is close to the one end of pan feeding mouth 301 in the well section of thick bamboo 340, and at this in-process, constantly by second stirring board 341 uplift, with hot-blast abundant heat transfer, carry out countercurrent drying, receive the thermal radiation and the thermal contact of inner tube 350 and urceolus 330 simultaneously, the hot-blast heat energy of make full use of, the heat transfer effect is better. After passing through the middle barrel 340, the material enters the outer barrel 330, and flows to the discharge port 302 at the other end of the outer barrel 330 along one end of the outer barrel 330 close to the feeding port 301, and in the process, the third stirring plate 331 repeatedly lifts the material, so that the material is sufficiently dried.

So, the material reciprocates in drying-machine 300, and stirs repeatedly and raises, has increased area of contact with hot-blast, contact time, makes moisture content effective evaporation, has improved the stoving effect.

Alternatively, the outer barrel 330, the middle barrel 340, and the inner barrel 350 are coaxially disposed.

Specifically, referring to fig. 9 and 10, a plurality of first agitating plates 351 are distributed at intervals along the circumferential direction of the inner cylinder 350 to form a first plate group 352; the plurality of first plate sets 352 are distributed at intervals along the axis of the inner cylinder 350, and two adjacent first plate sets 352 are arranged in a staggered manner.

Wherein, the circumference interval distribution of inner tube 350 is followed to first stirring board 351 of every group first board group 352, and two sets of first board group 352 staggers the setting each other, can the intensive mixing material, and with the material fragmentation for the material is dried easily, and simultaneously, the setting of staggering of adjacent two sets of first board group 352 can avoid the material to pass through inner tube 350 fast, is favorable to increasing the stoving time of material.

Specifically, referring to fig. 9 and 10, the first stirring plate 351 is a spiral plate, at least a portion of the first stirring plate 351 has a back surface with an inclined flow guiding straight plate 353 protruding, and the inclined flow guiding straight plate 353 can guide the material to flow from one end of the inner cylinder 350 to the other end of the inner cylinder 350. The material is thrown to the other end of inner tube 350 from one end of inner tube 350 under the stirring of helical plate, and protruding water conservancy diversion straight board 353 that establishes is favorable to smashing the material for the material is finely smashed, makes the inside of material obtain the drying.

In addition, the surface of the straight guide plate 353 is a plane, and when materials vertically fall on the straight guide plate 353, the smashing effect is better, and the drying effect of the materials is also better.

Specifically, referring to fig. 9 and 10, a plurality of second agitating plates 341 are distributed at intervals along the circumferential direction of the middle cylinder 340 to form a second plate group 342. The plurality of sets of second plate groups 342 are distributed at intervals along the axis of the middle cylinder 340, the inner wall of the middle cylinder 340 is further provided with a plurality of first rectangular plates 343, and the plurality of first rectangular plates 343 are distributed at intervals along the circumferential direction of the middle cylinder 340 to form a third plate group 344. The third plate set 344 is located between two adjacent second plate sets 342.

In the middle tube 340, the material is not only repeatedly raised by the second stirring plate 341, but also repeatedly flapped by the first rectangular plate 343, and a two-step advancing mode is adopted, so that the drying time of the material is prolonged, and the drying effect of the material can be improved.

Specifically, referring to fig. 9 and 10, a plurality of third agitating plates 331 are distributed at intervals along the circumferential direction of the outer cylinder 330 to form a fourth plate group 332; the plurality of sets of fourth plate groups 332 are spaced apart along the axis of the outer barrel 330, the inner wall of the outer barrel 330 is further provided with a plurality of second rectangular plates 333, and the plurality of second rectangular plates 333 are spaced apart along the circumferential direction of the outer barrel 330 to form a fifth plate group 334. The fifth plate set 334 is located between two adjacent sets of fourth plate sets 332.

In the middle barrel 340, the materials are not only repeatedly raised by the third stirring plate 331, but also repeatedly flapped by the second rectangular plate 333, and are in a rectangular multi-loop advancing mode, the materials achieving the drying effect rapidly advance under the action of hot air and are discharged out of the outer barrel 330 and finally are discharged from the dryer 300, the wet materials which do not achieve the drying effect cannot rapidly advance due to self weight, and the materials are sufficiently dried in the second rectangular plate 333, so that the drying purpose is completed.

In some embodiments, the material drying system further includes an exhaust valve installed in the dryer 300, and the exhaust valve is used to control the dryer 300 to communicate with the outside air. When the dryer 300 is operated, the exhaust valve is closed. When the dryer 300 malfunctions or is shut down, the exhaust valve may be opened to allow the dryer 300 to dissipate heat.

In one embodiment, referring to fig. 3 and 4, the discharge end of the air draft device 510 is provided with a discharger 520, and the discharger 520 is connected to the scraper conveyor 400 through an auger reamer mechanism 530.

Wherein, the fine powder and the hot-blast that updraft ventilator 510 extracted, partial fine powder is collected in the dust removal filter bag through the air-out end, avoids the raise dust, is favorable to environmental protection, and partial fine powder falls into tripper 520 through the discharge end in, then carries to scraper conveyor 400 through spiral reamer mechanism 530 for the fine powder is used up and is not wasted.

Specifically, the number of updraft ventilator 510 is more than two, and tripper 520 and spiral reamer mechanism 530 all with updraft ventilator 510 one-to-one, and two or more spiral reamer mechanisms 530 interval connection are in scraper conveyor 400's middle part.

Optionally, the air draft device 510 is in communication with the outlet 302 of the dryer 300 through a duct.

In some embodiments, the other end of the face conveyor 400 is connected to the grinding system by a bucket elevator.

In any of the foregoing embodiments, the material drying system further includes a controller, and the controller is electrically connected to the blower 102, the branch switch valve 105, the main switch valve 106, the temperature detecting device 107, the air hammer 210, the dryer 300, the scraper conveyor 400, the air draft device 510, the discharger 520, and the auger mechanism 530, respectively, to control the material to flow and dry in order.

The following concrete structure of material drying system is combined, and the material is specifically selected to be the petroleum coke block, explains the drying process of petroleum coke block in detail:

the petroleum coke blocks enter the dryer 300 through the feed bin 200, are continuously stirred and finely crushed in the dryer 300, and are fully contacted with hot air to be dried. The majority of the dried petroleum coke pieces are conveyed to the grinding system by the flight conveyor 400. The dried small part of the petroleum coke blocks is extracted by the air extracting device 510, enters the discharger 520 from the discharge end of the air extracting device 510, is vibrated by the pulse, enters the spiral reamer mechanism 530, and is conveyed by the scraper conveyor 400 to reach the grinding system. Wherein, the air draft device 510 may be configured in two, and accordingly, the number of the discharger 520 and the helical reamer mechanism 530 is also two.

After the material drying system is put into use, the dehydration rate of petroleum coke is improved, the strength and the moisture of finished powder are stabilized, the inventory is reduced, the capital occupation cost is reduced, the yield of the finished powder is obviously improved, and the running time of a grinding system is reduced, so that the maintenance cost and the power consumption are reduced, the moisture of the coke powder is stable, the combustion quality is improved, the energy consumption is reduced, and the glass quality is improved. The material drying system specifically comprises the following advantages:

firstly, the dehydration rate of the petroleum coke is improved, the granularity and the moisture of the finished petroleum coke powder can be stably controlled, and the petroleum coke powder is not influenced by seasons.

Secondly, the water content of the petroleum coke powder is reduced to eliminate the condition of pipeline blockage, the equipment runs stably, the combustion condition is stable, and the workload of operators is greatly reduced.

Thirdly, the stability of the petroleum coke granularity and the moisture is that the combustion quality is obviously improved, the phenomena of foaming and outburst disappear, and the product quality is obviously improved;

fourthly, the reduction of the petroleum coke moisture is the obvious reduction of the power consumption, and the equipment failure rate is greatly reduced.

Compared with the existing natural dehydration mode, the beneficial effect of the material drying system is specifically shown in figure 13. After the material drying system is adopted, the moisture of the coke powder is greatly reduced, the powder feeding effect of a pipeline is improved, the powder feeding time is averagely reduced by 2.5 hours every day, and the use amount of compressed air is reduced (the use amount of the compressed air is 29 m)³Per minute), saving electric power 2.5 hours × 60 minutes × 29m³Minute x 0.1 degree/m³435 degrees/day.

Referring to fig. 12, the present invention further provides a control method applied to the material drying system in any one of the above embodiments, including the following steps:

s100: the hot air delivery duct 101 and air extraction device 510 are activated.

Alternatively, activating the hot air delivery duct 101 means opening the fan 102 connected to the hot air delivery duct 101.

S200: when the first preset time is reached after the hot air conveying pipeline 101 and the air draft device 510 are started, the scraper conveyor 400 is started, the hot air conveying pipeline 101 is communicated with the dryer 300, and the exhaust valve of the dryer 300 is closed.

Optionally, the first preset time is 5s to 10 s.

Here, the communication between the hot wind supplying duct 101 and the dryer 300 means that the main opening and closing valve 106 of the hot wind supplying duct 101 is opened.

S300: after the internal temperature of the dryer 300 reaches the first preset temperature, the dryer 300 is started.

Optionally, the first preset temperature is 100-150 deg.c

S400: when the second preset time is reached after the dryer 300 is started, the discharging bin 200 conveys the materials to the dryer 300 through the feeding port 301 of the dryer 300.

Optionally, the value range of the second preset time is 15s to 45 s.

Referring to fig. 11, the material drying system is started in a shutdown state, and in the first step, the hot air delivery pipe 101 and the air draft device 510 are started first. And secondly, after waiting for the first preset time, starting the scraper conveyor 400, communicating the hot air conveying pipeline 101 with the dryer 300, and simultaneously closing an exhaust valve of the dryer 300. Third, the dryer 300 is started after the internal temperature of the dryer 300 reaches the first preset temperature. And a fourth step of waiting for a second preset time after the dryer 300 is started, and then starting to convey the material to the dryer 300 by the discharge bin 200.

Alternatively, when the lower bin 200 starts to supply, the feeder is started and the air hammer 210 starts to vibrate.

In some embodiments, the material drying system may be controlled manually or automatically. When the controller breaks down, for example when the PLC cabinet breaks down, manual control can be switched to, and the staff can manually control the material drying system for production is carried out in succession.

In some embodiments, the control method comprises starting the bucket elevator and then starting the scraper conveyor.

In some embodiments, the feeder is shut down after the level of the discharge bin 200 alarms ultra high.

In some embodiments, after detecting the shutdown failure of the scraper conveyor 400, an alarm signal is sent, and at the same time, the operation of the air hammer 210, the feeder, and the auger reamer mechanism 530 is stopped, the air draft device 510 blows back, and the exhaust valve of the dryer 300 is opened.

In one embodiment, the method includes: in step S300, within a third preset time, the internal temperature of the dryer 300 does not reach the first preset temperature, and an alarm signal is sent out to enable the worker to perform maintenance as soon as possible.

In one embodiment, the method includes: before step S100, when the internal temperature of dryer 300 reaches the second preset temperature, an alarm signal is sent out to enable a worker to perform maintenance as soon as possible, thereby preventing spontaneous combustion from occurring inside dryer 300.

In one embodiment, the method includes: in the operation process of the dryer 300, when a fault of the dryer 300 is detected, an alarm signal is sent, the air hammer 210 and the feeder are stopped to work, and the exhaust valve is opened to cool the dryer 300, so that the materials in the dryer 300 are prevented from spontaneous combustion due to temperature rise.

In one embodiment, the method includes: when the fan 102 is in fault shutdown, an alarm signal is sent out, the air hammer 210 and the feeder are stopped to work, an outer hot air exhaust valve of the annealing kiln is opened, and an exhaust valve of the dryer 300 is opened.

In one embodiment, the controller has an emergency stop button, such as a PLC console having an emergency stop button. The method comprises that when a great emergency occurs, the emergency stop button is pressed, and the whole system stops running.

In one embodiment, the method includes signaling an alarm when the extractor 510 and the auger reamer mechanism 530 fail.

In one embodiment, the method includes detecting a current during operation of the dryer 300, sending an alarm signal when the current exceeds a set current, stopping operation of the air hammer 210 and the feeder, and opening an exhaust valve of the dryer 300 to cool the dryer 300.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a material drying system which characterized in that: including hot-blast pipeline, lower feed bin, drying-machine, scraper conveyor and updraft ventilator, the drying-machine has pan feeding mouth and discharge gate, hot-blast pipeline with pan feeding mouth intercommunication, hot-blast pipeline be used for to the inside of drying-machine provides hot-blast, updraft ventilator's air inlet end communicate in the discharge gate, updraft ventilator's air-out end is connected with the dust bag, updraft ventilator is used for the extraction gas in the drying-machine, so that the inside of drying-machine forms the negative pressure, lower feed bin with pan feeding mouth intercommunication, scraper conveyor's one end with the discharge gate intercommunication, scraper conveyor's the other end be used for with grinding system intercommunication.

2. The material drying system of claim 1, wherein: the material drying system further comprises an annealing kiln waste heat air inducing device, the annealing kiln waste heat air inducing device comprises a fan, a manifold and a plurality of air inducing pipes, one ends of the air inducing pipes are respectively used for being communicated with air outlets of all areas of the annealing kiln, the other ends of the air inducing pipes are communicated with the manifold, the manifold is communicated with air inlet ends of the fan, and hot air conveying pipelines are communicated with air outlet ends of the fan.

3. The material drying system of claim 2, wherein: the air guiding pipes are arranged on the branch switch valves, the collecting pipe and/or the hot air conveying pipeline is provided with a main switch valve, and at least one of the collecting pipe, the fan and the hot air conveying pipeline is provided with a temperature detection device.

4. The material drying system of claim 1, wherein: the dryer comprises a rotary driving device, a supporting seat, an outer barrel, a middle barrel and an inner barrel which are sequentially sleeved, wherein the feeding opening is formed in one end of the inner barrel, the other end of the inner barrel is communicated with one end, far away from the feeding opening, of the middle barrel, one end, close to the feeding opening, of the middle barrel is communicated with one end, close to the feeding opening, of the outer barrel, and the discharging opening is formed in one end, far away from the feeding opening, of the outer barrel;

5. The material drying system of claim 4, wherein: the dryer further includes at least one of:

the first stirring plates are distributed at intervals along the circumferential direction of the inner cylinder to form a first plate group; the plurality of groups of first plate groups are distributed at intervals along the axis of the inner cylinder, and two adjacent groups of first plate groups are arranged in a staggered manner;

the first stirring plate is a spiral plate, the back surface of at least part of the first stirring plate is convexly provided with an obliquely arranged flow guide straight plate, and the obliquely arranged flow guide straight plate can guide the material to flow from one end of the inner cylinder to the other end of the inner cylinder;

the plurality of second stirring plates are distributed at intervals along the circumferential direction of the middle cylinder to form a second plate group; the plurality of groups of second plate groups are distributed at intervals along the axis of the middle cylinder, the inner wall of the middle cylinder is also provided with a plurality of first rectangular plates, and the plurality of first rectangular plates are distributed at intervals along the circumferential direction of the middle cylinder to form a third plate group; the third plate group is positioned between two adjacent groups of the second plate groups; and

the third stirring plates are distributed at intervals along the circumferential direction of the outer cylinder to form a fourth plate group; the plurality of groups of fourth plate groups are distributed at intervals along the axis of the outer barrel, a plurality of second rectangular plates are further arranged on the inner wall of the outer barrel, and the plurality of second rectangular plates are distributed at intervals along the circumferential direction of the outer barrel to form a fifth plate group; the fifth plate group is positioned between two adjacent groups of the fourth plate groups.

6. The material drying system of claim 1, wherein: an unloader is installed at the discharge end of the air draft device, and the unloader is connected with the scraper conveyor through a spiral reamer mechanism.

7. The material drying system of claim 6, wherein: the quantity of updraft ventilator is more than two, the tripper with spiral reamer mechanism all with updraft ventilator one-to-one, more than two spiral reamer mechanism interval connect in scraper conveyor's middle part.

8. The material drying system of any one of claims 1 to 7, wherein: the material drying system further comprises at least one of the following:

the air hammer is arranged below the blanking bin and is used for preventing blockage in the blanking bin;

and the exhaust valve is arranged on the dryer and used for controlling the dryer to be communicated with external air.

9. A method of controlling the material drying system of claim 1, wherein: the method comprises the following steps:

s100: starting a hot air conveying pipeline and an air draft device;

10. The method of claim 9, wherein: the method comprises the following steps:

in step S300, within a third preset time, the internal temperature of the dryer does not reach the first preset temperature, and an alarm signal is sent;

before step S100, the internal temperature of the dryer reaches a second preset temperature, and an alarm signal is sent.