CN110595154A - Fly ash drying system and fly ash drying process - Google Patents
Fly ash drying system and fly ash drying process Download PDFInfo
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- CN110595154A CN110595154A CN201910896746.8A CN201910896746A CN110595154A CN 110595154 A CN110595154 A CN 110595154A CN 201910896746 A CN201910896746 A CN 201910896746A CN 110595154 A CN110595154 A CN 110595154A
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- finished product
- fly ash
- ash
- drying
- storage bin
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
Abstract
The application relates to drying treatment technical field, especially relates to a flying ash drying system and flying ash drying process, and flying ash drying system includes: the drying device, the finished product storage bin and the mixing device; the finished product storage bin is communicated with the mixing device, the mixing device is also communicated with a washing production line for washing the fly ash, and the dry fly ash in the finished product storage bin and the wet fly ash in the washing production line are mixed in the mixing device according to a preset proportion to form mixed fly ash; the discharge port of the mixing device is communicated with the drying device, and the drying device is used for drying the mixed fly ash entering the drying device to form finished product ash and conveying the finished product ash to a finished product storage bin. The application provides a flying dust drying system carries to carry out the intensive mixing in mixing arrangement through making dry flying dust and wet flying dust carry according to predetermined ratio, reaches the dry and wet proportion that drying device required, has alleviateed the condition that drying device blockked up to effectively improve the stoving effect, improved the flying dust handling capacity.
Description
Technical Field
The application relates to the technical field of fly ash treatment, in particular to a fly ash drying system and a fly ash drying process.
Background
At present, a fly ash washing and drying unit is an important component of a washing disposal line, and is used for drying a semi-finished product of washed fly ash by using hot air of a cement kiln so as to ensure that the moisture of the finished product of fly ash reaches the standard of in-kiln calcination.
In actual production, the moisture content of the semi-finished fly ash subjected to three-stage reverse drifting washing reaches 35-50%, and is far greater than the requirement of the domestic existing dryer on material moisture. Therefore, the blockage phenomenon of the production line dryer frequently occurs before modification, a large amount of manpower and material resources are consumed for cleaning the dryer for 1-2 times per shift, and the fly ash disposal amount is greatly limited.
Disclosure of Invention
The application aims to provide a fly ash drying system and a fly ash drying process, so that the technical problems that a dryer is frequently blocked and needs to be frequently cleaned in the prior art are solved to a certain extent.
The application provides a fly ash drying system includes: the drying device, the finished product storage bin and the mixing device;
the finished product storage bin is communicated with the mixing device, the mixing device is also communicated with a water washing production line for washing fly ash, and dry fly ash in the finished product storage bin and wet fly ash in the water washing production line are mixed in the mixing device according to a preset proportion to form mixed fly ash;
the discharge port of the mixing device is communicated with the drying device, and the drying device is used for drying the mixed fly ash entering the drying device to form finished product ash and conveying the finished product ash to the finished product storage bin.
In the above technical solution, further, the finished product storage bin is communicated with the mixing device through a conveying member, and a first blanking device is disposed at one end of the conveying member close to the mixing device, and the ratio of the dry fly ash and the wet fly ash entering the mixing device can be adjusted by adjusting the frequency of the first blanking device.
In any one of the above technical solutions, further, a second discharging device is disposed at an inlet of the drying device, and the mixed fly ash is conveyed into the drying device through the second discharging device, so as to prevent cold air from entering the drying device.
In any one of the above technical solutions, further, the fly ash drying system further includes a dust collection assembly, the dust collection assembly is disposed between the drying device and the finished product storage bin, and the dust collection assembly is configured to collect the finished product ash in the drying device.
In any one of the above technical scheme, furtherly, gather dust the subassembly with the finished product is stored and is provided with the lifting machine between the storehouse, the lifting machine be used for with in the subassembly that gathers dust finished product ash is transported extremely in the finished product stores the storehouse, perhaps the conveying member is kept away from the finished product stores the one end in storehouse can with the lifting machine is linked together, makes the lifting machine can with in the finished product stores the storehouse finished product ash is transported extremely in the mixing arrangement.
In any one of the above technical solutions, further, the discharge gate of lifting machine is provided with the depiler valve, makes the process the lifting machine is transported the finished product ash can get into in the finished product storage storehouse, perhaps the discharge gate of lifting machine is provided with the depiler valve, flying ash drying system is provided with and is used for calcining the calcining kiln of finished product ash, the depiler valve makes the process the lifting machine is transported the finished product ash can get into in the calcining kiln.
In any of the above technical solutions, further, the fly ash drying system is provided with a calcining kiln for calcining the finished product ash, the calcining kiln is provided with a hot air discharge channel, and the hot air discharge channel is communicated with the drying device and is used for conveying hot air in the calcining kiln into the drying device as a heat source to dry the mixed fly ash.
In any one of the above technical solutions, further, a double-shaft reamer is disposed between the water washing production line and the mixing device, and the wet fly ash is scattered by the double-shaft reamer and then enters the mixing device.
In any of the above technical solutions, further, the fly ash drying system further includes a control device, and the dust collection assembly, the mixing device, the first blanking device, the second blanking device, the dual-axis reamer and the drying device are all electrically connected to the control device.
The application also provides a fly ash drying process, which comprises the following steps:
s100, mixing dry fly ash from a finished product storage bin and wet fly ash from a washing production line according to a preset proportion to form mixed fly ash, and drying the mixed fly ash;
s200, forming finished product ash after the mixed fly ash is dried, collecting the finished product ash, and enabling at least part of the finished product ash to enter a finished product storage bin when the finished product ash reaches a preset amount;
s300, enabling part of finished product ash in the finished product storage bin to be used for mixing with the wet fly ash according to the preset proportion.
Compared with the prior art, the beneficial effect of this application is:
the application provides fly ash drying system includes: the drying device, the finished product storage bin and the mixing device; the finished product storage bin is communicated with the mixing device, so that finished product ash in the finished product storage bin can be conveyed into the mixing device; the mixing device is also communicated with a washing production line for washing the fly ash, so that wet fly ash in the washing production line can be conveyed into the mixing device to be mixed with dry fly ash in the mixing device to form mixed fly ash, a discharge port of the mixing device is communicated with the drying device, the dry fly ash and the wet fly ash are conveyed into the mixing device according to a preset proportion, the moisture of the mixed fly ash formed by fully mixing the dry fly ash and the wet fly ash in the preset proportion meets the feeding requirement of the drying device, the drying effect is good, the drying device cannot be blocked, the mixed fly ash is dried in the drying device to form finished product ash and then is conveyed into a finished product storage bin to be uniformly collected for next treatment, or the mixed fly ash is used as dry fly ash to be supplied into the mixing device.
It can be seen that the fly ash drying system provided by the application avoids the existing back mixing process that a back and forth spiral push rod is arranged at the outlet of a dryer, a back mixing bin and a finished product bin are arranged at two sides of the spiral push rod, and a limiting device is arranged in the back mixing bin and the finished product bin, when dry ash on one side is fully loaded or insufficient, and the spiral push rod is controlled to supply ash to one side or the opposite side.
The application also provides a flying ash drying process, the condition that the drying device is easy to block is reduced to the greatest extent through the flying ash drying process, the workload of workers is reduced, the operation is simple, the drying effect is effectively improved, and the flying ash disposal quantity is improved.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a fly ash drying system according to an embodiment of the present disclosure;
FIG. 2 is an enlarged schematic view of the fly ash drying system provided in FIG. 1 at A;
fig. 3 is a flowchart of a fly ash drying process provided in an embodiment of the present application.
Reference numerals:
1-drying device, 2-finished product storage bin, 3-mixing device, 4-first blanking device, 5-second blanking device, 6-dust collection component, 601-dust collection bin, 602-dust collection fan, 7-lifting machine, 8-double-shaft reamer, 9-water washing production line and 10-calcining kiln.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A fly ash drying system and a fly ash drying process according to some embodiments of the present application are described below with reference to fig. 1 to 3.
Referring to fig. 1 or 2, an embodiment of the present application provides a fly ash drying system, including: the drying device 1, the finished product storage bin 2 and the mixing device 3; the finished product storage bin 2 is communicated with the mixing device 3, the mixing device 3 is also communicated with a water washing production line 9 for washing the fly ash, and the dry fly ash in the finished product storage bin 2 and the wet fly ash in the water washing production line 9 are mixed in the mixing device 3 according to a preset proportion to form mixed fly ash; the discharge port of the mixing device 3 is communicated with the drying device 1, and the drying device 1 is used for drying the mixed fly ash entering the drying device 1 to form finished product ash and conveying the finished product ash into the finished product storage bin 2.
The application provides fly ash drying system includes: the drying device 1, the finished product storage bin 2 and the mixing device 3; the finished product storage bin 2 is communicated with the mixing device 3, so that finished product ash in the finished product storage bin 2 can be conveyed into the mixing device 3; the mixing device 3 is also communicated with a washing production line 9 for washing the fly ash, so that wet fly ash in the washing production line 9 can be conveyed into the mixing device 3 to be mixed with dry fly ash in the mixing device 3 to form mixed fly ash, a discharge port of the mixing device 3 is communicated with the drying device 1, the dry fly ash and the wet fly ash are conveyed into the mixing device 3 according to the preset proportion, the moisture of the mixed fly ash formed by fully mixing the dry fly ash and the wet fly ash in the preset proportion meets the feeding requirement of the drying device 1, the drying effect is good, the drying device 1 cannot be blocked, the mixed fly ash is dried in the drying device 1 to form finished product ash and then is conveyed into a finished product storage bin 2 to be uniformly collected for further treatment, or the mixed fly ash is used as dry fly ash to be supplied into the mixing device 3.
It can be seen that the fly ash drying system provided by the application avoids the existing back mixing process that a back and forth spiral push rod is arranged at the outlet of a dryer, a back mixing bin and a finished product bin are arranged at two sides of the spiral push rod, and a limiting device is arranged in the back mixing bin and the finished product bin, when dry ash on one side is fully loaded or insufficient, the spiral push rod is controlled to supply ash to one side or the opposite side, the process steps are increased due to the arrangement, the abrasion is too large in the process of the back and forth rotation of the spiral push rod, the cost is high, the fly ash drying system provided by the application achieves the dry-wet proportion required by the drying device 1 by conveying the dry fly ash and the wet fly ash into the mixing device 3 according to the preset proportion to be fully mixed, the condition that the drying device 1 is easy to block is obviously lightened, the workload of workers for cleaning the drying device 1 is reduced, the drying.
Wherein, optionally, the mixing device 3 is a coulter mixer commonly known in the art, but of course, is not limited thereto.
Wherein, optionally, the drying device 1 is a vertical dryer commonly known in the prior art, but is not limited thereto.
In one embodiment of the present application, preferably, as shown in fig. 1 or fig. 2, the finished product storage bin 2 is in communication with the mixing device 3 through a conveying member, and one end of the conveying member near the mixing device 3 is provided with a first blanking device 4, and the ratio of the dry fly ash and the wet fly ash entering the mixing device 3 can be adjusted by adjusting the frequency of the first blanking device 4.
In this embodiment, a discharge valve is disposed at the discharge port of the finished product storage bin 2, the amount of the dry fly ash conveyed to the conveying member through the discharge port of the finished product storage bin 2 can be adjusted by adjusting the discharge valve, so as to adjust the amount of the dry fly ash entering the mixing device 3, the dry fly ash in the conveying member is conveyed to the mixing device 3 by the first blanking device 4, and the amount of the dry fly ash entering the mixing device 3 is controlled by adjusting the frequency of the first blanking device 4.
Optionally, the first blanking device 4 is a variable-frequency rotary blanking device commonly used in the prior art, and when the amount of the dry fly ash conveyed into the mixing device 3 is insufficient, the conveying amount of the dry fly ash is increased by controlling the frequency of the variable-frequency rotary blanking device to reach a predetermined ratio with the wet fly ash, so that the situation that the mixing device 3 is blocked due to more wet sludge is avoided; when the amount of the mixing device 3 is too large during the dry fly ash conveying, the frequency of the variable-frequency rotary feeder is controlled to reduce the input amount of the dry fly ash, so that the phenomenon of overflowing of the mixing device 3 is avoided.
Wherein, optionally, the conveying member is a feed chute as is common in the art, without being limited thereto.
In one embodiment of the present application, preferably, as shown in fig. 1 and 2, a second blanking device 5 is provided at an inlet of the drying device 1, and the mixed fly ash is conveyed into the drying device 1 through the second blanking device 5 for preventing cold air from entering into the drying device 1.
In this embodiment, the second discharging device 5 can convey the mixed fly ash into the drying device 1, can uniformly convey the mixed fly ash into the drying device 1, and can seal a feed inlet of the drying device 1, so as to prevent cold air from entering the drying device 1 and affecting the drying effect of the drying device 1.
Optionally, the second blanking device 5 is a rotary airlock blanking device commonly used in the prior art, but is not limited thereto.
In one embodiment of the present application, preferably, as shown in fig. 1, the fly ash drying system further includes a dust collecting assembly 6, the dust collecting assembly 6 is disposed between the drying apparatus 1 and the finished product storage bin 2, and the dust collecting assembly 6 is used for collecting finished product ash in the drying apparatus 1.
In this embodiment, the dust collection assembly 6 includes a dust collection fan 602 and a dust collection bin 601, the dust collection bin 601 is communicated with the discharge port of the drying device 1 through a dust collection channel, and the dust collection fan 602 is communicated with the dust collection bin 601, so that the dust collection fan 602 can draw finished product ash (actually, the same as the dry fly ash) dried in the drying device 1 into the dust collection bin 601 to wait for transportation.
In one embodiment of the present application, preferably, as shown in fig. 1, a lift 7 is disposed between the dust collection assembly 6 and the finished product storage bin 2, and the lift 7 is used for transferring the finished product ash in the dust collection assembly 6 into the finished product storage bin 2, or one end of the conveying member away from the finished product storage bin 2 can be communicated with the lift 7, so that the lift 7 can transfer the finished product ash in the finished product storage bin 2 into the mixing device 3.
In this embodiment, the elevator 7 is used for transferring the finished product ash in the dust collection bin 601 or transferring the finished product ash in the finished product storage bin 2; the hoister 7 is communicated with the dust collection bin 601 through a conveying chute, so that finished product ash in the dust collection bin 601 can enter the hoister 7, the hoister 7 is also communicated with the mixing device 3, and the finished product ash in the hoister 7 can enter the mixing device 3 for dry ash replenishment.
In one embodiment of the present application, preferably, as shown in fig. 1, the discharge port of the elevator 7 is provided with a material distribution valve which allows the finished ash transferred through the elevator 7 to enter the finished product storage bin 2, or the material distribution valve provided at the discharge port of the elevator 7 allows the finished ash to enter the calcining kiln 10 for calcining the finished ash.
In this embodiment, after the elevator 7 transports the finished product in the dust collecting bin 601, part of the finished product ash enters the calciner 10 through the material separating valve for calcination, and a fly ash metering bin is disposed at the inlet of the calciner 10 for metering the amount of the calcined fly ash, so as to avoid the situation that the amount of the fly ash entering the calciner 10 at one time is large, and the working condition in the calciner 10 is not affected, and the fly ash metering bin can store a certain amount of finished product ash to be timely supplemented into the calciner 10. Discharging finished product ash for calcination, and discharging other large quantities of finished product ash into a finished product storage bin 2 through a material distribution valve for storage.
In one embodiment of the present application, preferably, an intermediate bin (not shown in the figure) is disposed between the dust collecting bin and the elevator, in this embodiment, the dust collecting bin is communicated with the feed inlet of the intermediate bin, the finished product ash collected by the dust collecting bin is transferred into the intermediate bin, the intermediate bin includes a first discharge outlet and a second discharge outlet, the first discharge outlet is provided with an ash bucket, so that a part of the finished product ash in the intermediate bin sequentially enters the mixing device through the first discharge outlet and the ash bucket for dry ash replenishment, the second discharge outlet is also provided with an ash bucket, another part of the finished product ash in the intermediate bin sequentially passes through the second discharge outlet and the ash bucket and is transferred into the elevator, and the finished product ash in the elevator is distributed into the calcining kiln through the fly ash metering bin according to the metering result of the fly ash metering bin at the outlet of the elevator, and the rest of the finished product ash in the elevator is distributed into the finished product storage bin for storage, similarly, the finished product storage bin is communicated with the elevator through a conveying component, and when needed, the finished product ash in the finished product storage bin can be conveyed into the elevator through a discharge valve discharged from a discharge port of the finished product storage bin and then conveyed into the mixing device.
In one embodiment of the present application, preferably, the fly ash drying system is provided with a calciner 10 for calcining the finished product ash, the calciner 10 being provided with a hot air discharge channel, the hot air discharge channel being communicated with the drying device 1 for conveying hot air in the calciner 10 into the drying device 1 as a heat source for drying the mixed fly ash.
In this embodiment, the hot air in the calciner 10 can be delivered to the drying device 1 to be used as a heat source to assist in drying the mixed fly ash, so that the power consumption of the drying device 1 is reduced, a large amount of energy is saved, a good environmental protection effect is achieved, and the drying cost is reduced.
In one embodiment of the present application, preferably, as shown in fig. 1 or fig. 2, a double-shaft reamer 8 is disposed between the water washing production line 9 and the mixing device 3, and the wet fly ash is scattered by the double-shaft reamer 8 and then enters the mixing device 3.
In this embodiment, the wet fly ash conveyed by the washing line 9 is in a mud cake shape, and the mud cake-shaped wet fly ash can be sufficiently stirred and dispersed by the double-shaft reamer 8, so that the amount of the wet fly ash can be conveniently controlled, and the wet fly ash can be prevented from entering the mixing device 3 in an excessive amount at one time.
Wherein, alternatively, the double-shaft reamer 8 is a double-shaft screw conveyor commonly known in the art, and can be fully understood by those skilled in the art.
In an embodiment of the present application, preferably, the fly ash drying system further comprises a control device, and the dust collecting assembly, the mixing device, the first blanking device, the second blanking device, the double-shaft reamer and the drying device are all electrically connected with the control device (not shown in the figure).
In this embodiment, controlling means, subassembly, mixing arrangement, first unloader, second unloader, biax reamer and drying device gather dust and jointly form interlocking system, when the flying dust drying system that this application provided breaks down and stops, easily causes drying device to collapse the ash and mixing arrangement, drying device to block up the circumstances such as, for preventing the occurence of failure, reduces the potential safety hazard, forms this interlocking system:
(1) after the dust collection fan stops, the control device controls the mixing device and the second blanking device to stop in a delayed time-minute mode, controls the first blanking device and the conveying component to stop in a delayed time-minute mode, and controls the double-shaft reamer not to stop in a delayed time-minute mode; the frequency conversion of the second blanking device returns to zero;
(2) when the current of the mixing device reaches 55A (yellow high report is made when 45A), the control device controls the second discharging device to perform variable frequency zeroing and the double-shaft reamer to perform linked jumping stop. The first blanking device and the conveying component are in chain jumping stop.
(3) When the current of the drying device reaches 55A (yellow high report is made when 45A), the control device controls the mixing device and the second discharging device to jump and stop the first discharging device in a linkage manner, the conveying component to jump and stop in a linkage manner, the second discharging device to return to zero in a frequency conversion manner, and the double-shaft reamer to jump and stop in a linkage manner. (the current of the drying device is high basically that the mixed fly ash materials in the drying device are more, the mixing device is stopped to prevent more wet mud in the drying machine, and the cleaning of the mixing device is safer compared with the cleaning of the drying machine).
Embodiments of the present application also provide a fly ash drying process, preferably, as shown in fig. 3, including the following steps:
s100, mixing dry fly ash from a finished product storage bin 2 and wet fly ash from a washing production line 9 according to a preset proportion to form mixed fly ash, and drying the mixed fly ash;
s200, forming finished product ash after the mixed fly ash is dried, collecting the finished product ash, and enabling at least part of the finished product ash to enter a finished product storage bin 2 when the finished product ash reaches a preset amount;
and S300, enabling part of finished product ash in the finished product storage bin 2 to be continuously mixed with wet fly ash according to a preset proportion.
In this embodiment, regarding S100: starting the drying device 1 to preheat the drying device 1, then starting the first discharging device 4 to add the dry fly ash and the wet fly ash into the mixing device 3 according to a preset proportion, fully mixing the dry fly ash and the wet fly ash, and then drying the mixture in the drying device 1 to form finished product ash;
with respect to S200: starting the dust collection assembly 6, drying the mixed fly ash in the drying device 1 to form finished product ash, and then collecting the finished product ash into the dust collection assembly 6, when the finished product ash in the dust collection assembly 6 reaches a preset amount, starting the hoister 7, transferring the finished product ash through the hoister 7, so that part of the finished product ash enters the finished product storage bin 2, the finished product ash in the finished product storage bin 2 is used for supplying dry fly ash to the mixing device 3, and the other part of the finished product ash enters the calcining kiln 10 for calcining;
note that, when the calcining kiln 10 is not provided, all of the finished product ash in the dust collecting assembly 6 enters the finished product storage bin 2.
With respect to S300: and opening a discharge valve arranged at a discharge port of the finished product storage bin 2 to ensure that the finished product ash in the finished product storage bin 2 is used as dry fly ash for supply and is continuously mixed with wet fly ash in the mixing device 3.
It should be noted that a part of the finished product ash entering the finished product storage bin 2 is transported to the mixing device 3 as a dry fly ash, and the rest of the finished product ash entering the finished product storage bin 2 except for the finished product ash in the mixing device 3 can be used for other purposes, such as sintering, or added to concrete for building construction.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A fly ash drying system, comprising: the drying device, the finished product storage bin and the mixing device;
the finished product storage bin is communicated with the mixing device, the mixing device is also communicated with a water washing production line for washing fly ash, and dry fly ash in the finished product storage bin and wet fly ash in the water washing production line are mixed in the mixing device according to a preset proportion to form mixed fly ash;
the discharge port of the mixing device is communicated with the drying device, and the drying device is used for drying the mixed fly ash entering the drying device to form finished product ash and conveying the finished product ash to the finished product storage bin.
2. A fly ash drying system according to claim 1, wherein the finished product storage bin is in communication with the mixing device via a conveying means, and a first blanking means is provided at an end of the conveying means near the mixing device, whereby the ratio of the dry fly ash and the wet fly ash entering the mixing device can be adjusted by adjusting the frequency of the first blanking means.
3. A fly ash drying system according to claim 2, wherein a second blanking device is provided at an inlet of the drying device, and the mixed fly ash is conveyed into the drying device through the second blanking device for preventing cold air from entering into the drying device.
4. A fly ash drying system according to claim 3, further comprising a dust collection assembly disposed between the drying apparatus and the finished product storage bin, the dust collection assembly being configured to collect the finished product ash in the drying apparatus.
5. The fly ash drying system of claim 4, wherein a hoist is disposed between the dust collection assembly and the finished product storage bin, the hoist is configured to transport the finished product ash in the dust collection assembly into the finished product storage bin,
or one end of the conveying component, which is far away from the finished product storage bin, can be communicated with the elevator, so that the elevator can transfer the finished product ash in the finished product storage bin into the mixing device.
6. A fly ash drying system as claimed in claim 5, wherein the discharge port of the elevator is provided with a distributing valve to allow the finished ash transported by the elevator to enter the finished product storage bin,
or the discharge gate of lifting machine is provided with the depiler valve, flying ash drying system is provided with and is used for calcining the calcining kiln of finished product ash, the depiler valve makes the process the lifting machine is transported finished product ash can get into in the calcining kiln.
7. A fly ash drying system as claimed in claim 5, wherein the fly ash drying system is provided with a calciner for calcining the finished ash, the calciner being provided with a hot air discharge channel communicating with the drying device for conveying hot air in the calciner into the drying device as a heat source for drying the mixed fly ash.
8. The fly ash drying system according to claim 4, wherein a double-shaft reamer is arranged between the water washing production line and the mixing device, and the wet fly ash enters the mixing device after being scattered by the double-shaft reamer.
9. The fly ash drying system of claim 8, further comprising a control device, wherein the dust collection assembly, the mixing device, the first blanking device, the second blanking device, the dual-axis reamer, and the drying device are electrically connected to the control device.
10. The fly ash drying process is characterized by comprising the following steps of:
s100, mixing dry fly ash from a finished product storage bin and wet fly ash from a washing production line according to a preset proportion to form mixed fly ash, and drying the mixed fly ash;
s200, forming finished product ash after the mixed fly ash is dried, collecting the finished product ash, and enabling at least part of the finished product ash to enter a finished product storage bin when the finished product ash reaches a preset amount;
s300, enabling part of finished product ash in the finished product storage bin to be used for mixing with the wet fly ash according to the preset proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896746.8A CN110595154A (en) | 2019-09-20 | 2019-09-20 | Fly ash drying system and fly ash drying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896746.8A CN110595154A (en) | 2019-09-20 | 2019-09-20 | Fly ash drying system and fly ash drying process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113375422A (en) * | 2021-06-25 | 2021-09-10 | 宝武集团环境资源科技有限公司 | Fly ash air-cooling drying system and process |
| CN114646207A (en) * | 2022-03-21 | 2022-06-21 | 江苏国信协联能源有限公司 | Wet blue algae drying method |
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| CN113375422A (en) * | 2021-06-25 | 2021-09-10 | 宝武集团环境资源科技有限公司 | Fly ash air-cooling drying system and process |
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| CN114646207B (en) * | 2022-03-21 | 2023-04-07 | 江苏国信协联能源有限公司 | Wet blue algae drying method |
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Application publication date: 20191220 |