CN108775805B - Active carbon raw material drying equipment and method - Google Patents
Active carbon raw material drying equipment and method Download PDFInfo
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- CN108775805B CN108775805B CN201810903671.7A CN201810903671A CN108775805B CN 108775805 B CN108775805 B CN 108775805B CN 201810903671 A CN201810903671 A CN 201810903671A CN 108775805 B CN108775805 B CN 108775805B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 280
- 239000002994 raw material Substances 0.000 title claims abstract description 219
- 238000001035 drying Methods 0.000 title claims abstract description 134
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007664 blowing Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000001994 activation Methods 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon And Carbon Compounds (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The application provides active carbon raw material drying equipment, which comprises: the device comprises a first dryer, a first cyclone separator, a second dryer, a second cyclone separator, a hot air flow generating device and a feeding device; the first dryer, the first cyclone separator, the second dryer and the second cyclone separator are sequentially communicated through a pipeline, the first dryer is provided with a hot air inflow port and a first raw material inlet, the hot air flow generating device is communicated with the hot air inflow port of the first dryer, the second cyclone separator is provided with a hot air outflow port, hot air conveyed from the hot air flow generating device flows in through the hot air flow inlet of the first dryer, sequentially flows through the first cyclone separator, the second dryer and the second cyclone separator, and flows out from the hot air flow outlet of the second cyclone separator; the application also provides a method for drying the active carbon raw material. The active carbon raw material drying equipment and the drying method provided by the application can improve the drying efficiency and the drying quality of the active carbon raw material, and simultaneously save more energy.
Description
Technical Field
The application relates to the field of activated carbon production, in particular to activated carbon raw material drying equipment and an activated carbon raw material drying method.
Background
The active carbon is an adsorption material with developed pore structure, has the characteristics of strong adsorption capacity, good chemical stability, high mechanical strength and the like, and is widely applied to production and life. The activated carbon raw material is generally prepared through a series of procedures such as carbonization, cooling, activation, washing and the like, and before the preparation process of the activated carbon is started, the activated carbon raw material needs to be dried. In the whole preparation process of the activated carbon, the drying of the activated carbon raw material is a basic raw material treatment process, and is a process with the largest daily treatment capacity. At present, the drying of the active carbon raw material is finished by adopting a rotary furnace, and the rotary furnace is powerful active carbon preparation equipment, so that the active carbon raw material drying device not only has the function of drying the active carbon raw material, but also can finish the preparation procedures of carbonization and activation in the preparation of the active carbon. The rotary furnace is used for drying a large amount of active carbon raw materials every day, which is very unfavorable for controlling the use cost of equipment and directly affects the production efficiency of active carbon.
Disclosure of Invention
The application aims to solve the problem of low drying efficiency of the existing active carbon raw materials, and provides active carbon raw material drying equipment and a drying method with better drying effect and higher efficiency.
In order to achieve the above object, the present application provides an activated carbon raw material drying apparatus comprising: the device comprises a first dryer, a first cyclone separator, a second dryer, a second cyclone separator, a hot air flow generating device and a feeding device;
the hot air flow generating device is used for generating hot air flow with a first preset temperature and conveying the hot air flow;
the first dryer, the first cyclone separator, the second dryer and the second cyclone separator are sequentially communicated through pipelines, the first dryer is provided with a hot air inflow port and a first raw material inlet, the hot air generating device is communicated with the hot air inlet of the first dryer, the second cyclone separator is provided with a hot air outflow port, the hot air conveyed from the hot air generating device flows into the hot air inlet of the first dryer, sequentially flows through the first cyclone separator, the second dryer and the second cyclone separator and flows out from the hot air outlet of the second cyclone separator;
the second dryer has a second raw material inlet for mixing the activated carbon raw material entering from the second raw material inlet with the hot gas flow flowing through the second dryer for a second preset period of time to form a first dry stage activated carbon raw material and blowing the first dry stage activated carbon raw material to the second cyclone by the hot gas flow;
the second cyclone separator is provided with a second raw material outlet and is used for separating the first drying section active carbon raw material from the hot gas flow and discharging the separated first drying section active carbon raw material through the second raw material outlet;
the feeding device is respectively communicated with a first raw material inlet of the first dryer and a second raw material outlet of the second cyclone separator and is used for conveying the separated first drying section active carbon raw material discharged from the second raw material outlet into the first dryer through the first raw material inlet;
the first dryer is used for mixing the separated first drying section active carbon raw material from the feeding device with the hot air flow flowing in through the hot air flow inlet for a first preset time period to form a second drying section active carbon raw material, and blowing the second drying section active carbon raw material to the first cyclone separator through the hot air flow;
the first cyclone separator is provided with a first raw material outlet for separating the second drying section active carbon raw material from the hot air flow and discharging the separated second drying section active carbon raw material through the first raw material outlet.
Preferably, the drying apparatus further comprises a feeding device, the feeding device comprises a hopper and a feeding conveyor, a feed inlet of the feeding conveyor is communicated with the hopper, and a discharge outlet of the feeding conveyor is communicated with a second raw material inlet of the second dryer.
Preferably, the feeding conveyor comprises a rectangular housing and a screw conveying shaft, wherein the screw conveying shaft is arranged in the rectangular housing and is parallel to the bottom surface of the near-ground end in the rectangular housing.
Preferably, the feeding device comprises a first conveyor and a second conveyor, the first conveyor and the second conveyor are vertically arranged, a feed inlet of the first conveyor is communicated with a second raw material outlet of the second cyclone separator, a discharge outlet of the first conveyor is connected with a feed inlet of the second conveyor, and a discharge outlet of the second conveyor is connected with a first raw material inlet of the first dryer.
Preferably, the first preset temperature is 180-200 ℃.
Preferably, the first preset time period is 2-8 seconds, and the second preset time period is 2-8 seconds.
In addition, the application also provides an active carbon raw material drying method which is applied to the active carbon raw material drying equipment provided by the application, and comprises the following steps:
generating a hot air flow with a first preset temperature through a hot air flow generating device, conveying the hot air flow into the first dryer from a hot air inflow port of the first dryer, sequentially flowing through the first cyclone separator, the second dryer and the second cyclone separator, and flowing out from a hot air flow outlet of the second cyclone separator;
mixing the activated carbon raw material entering from a second raw material inlet of the second dryer with the hot air flow flowing through the second dryer for a second preset period of time through the second dryer to form a first dry section activated carbon raw material, and blowing the first dry section activated carbon raw material to the second cyclone separator through the hot air flow;
separating the first drying stage activated carbon feedstock from the hot gas stream by the second cyclone separator and discharging the separated first drying stage activated carbon feedstock through the second feedstock outlet;
conveying the separated first drying section activated carbon raw material discharged from the second raw material outlet into the first dryer through a first raw material inlet of the first dryer by the feeding device;
mixing the separated first dry stage activated carbon raw material from the feeding device with the hot air flow flowing in through the hot air flow inlet for a first preset period of time through the first dryer to form a second dry stage activated carbon raw material, and blowing the second dry stage activated carbon raw material to the first cyclone separator through the hot air flow;
and separating the second drying section active carbon raw material from the hot air flow through the first cyclone separator, and discharging the separated second drying section active carbon raw material through the first raw material outlet.
Preferably, the first preset time period is 2-8 seconds, and the second preset time period is 2-8 seconds.
The active carbon raw material drying equipment provided by the application adopts a double-dryer structure to dry active carbon raw materials, specifically, the second dryer and the second cyclone separator utilize hot air flowing through the second dryer to carry out primary drying on the active carbon raw materials, the hot air used for primary drying is the hot air separated from the step of finally drying the active carbon raw materials, the active carbon raw materials are subjected to primary drying to form a first dry section active carbon raw material and the hot air and the first dry section active carbon raw material are separated through the second cyclone separator, the separated first dry section active carbon raw material is conveyed to the first dryer through the feeding device, the first dry section active carbon raw material is mixed with the hot air with a first preset temperature flowing in from the hot air inlet in the first dryer to form a second dry section active carbon raw material, the second dry section active carbon raw material is blown to the first cyclone separator through the hot air, the separated second dry section active carbon raw material and the hot air are separated through the first cyclone separator, the separated second dry section active carbon raw material is discharged through the first dry section active carbon raw material outlet, and the hot air is discharged through the first dry section active carbon outlet, the two dry raw material is provided, the primary drying efficiency is improved, and the primary drying raw material quality is improved, and the primary drying efficiency is improved. The application also provides an active carbon raw material drying method applied to the active carbon raw material drying equipment. The active carbon raw material drying equipment and the drying method provided by the application can improve the drying efficiency and the drying quality of the active carbon raw material, and simultaneously save more energy.
Additional features and advantages of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, illustrate the application and together with the description serve to explain, without limitation, the application. In the drawings:
FIG. 1 is a schematic structural view of an activated carbon raw material drying apparatus according to an embodiment of the present application;
fig. 2 is a flow chart of a method for drying an activated carbon raw material according to an embodiment of the present application.
Description of the reference numerals
10. First dryer 20 first cyclone separator
30. Second dryer 40 second cyclone separator
50. Feeding device of hot air flow generating device 60
61. First conveyor 62 second conveyor
70. Feeding device 71 hopper
72. Feeding conveyor
Detailed Description
The following describes the detailed implementation of the embodiments of the present application with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
As shown in fig. 1, an embodiment of the present application provides an activated carbon raw material drying apparatus including: a first dryer 10, a first cyclone 20, a second dryer 30, a second cyclone 40, a hot gas flow generating device 50, and a feeding device 60;
the hot air flow generating device 50 is used for generating hot air flow with a first preset temperature and conveying the hot air flow;
the first dryer 10, the first cyclone 20, the second dryer 30 and the second cyclone 40 are sequentially connected through pipes, the first dryer 10 has a hot gas inflow port and a first raw material inlet, the hot gas flow generating device 50 is connected with the hot gas flow inlet of the first dryer 10, the second cyclone 40 has a hot gas flow outlet, the hot gas supplied from the hot gas flow generating device 50 flows through the hot gas flow inlet of the first dryer 10, flows through the first cyclone 20, the second dryer 30 and the second cyclone 40 in sequence, and flows out from the hot gas flow outlet of the second cyclone 40;
the second dryer 30 has a second raw material inlet for mixing the activated carbon raw material entered from the second raw material inlet with the hot air flow flowing through the second dryer 30 for a second preset period of time to form a first dry stage activated carbon raw material and blowing the first dry stage activated carbon raw material to the second cyclone 40 by the hot air flow;
the second cyclone 40 has a second feedstock outlet, the second cyclone 40 being configured to separate the first drying stage activated carbon feedstock from the hot gas stream and to discharge the separated first drying stage activated carbon feedstock through the second feedstock outlet;
the feeding device 60 is respectively communicated with a first raw material inlet of the first dryer 10 and a second raw material outlet of the second cyclone separator 40, and is used for conveying the separated first dry-section activated carbon raw material discharged from the second raw material outlet into the first dryer 10 through the first raw material inlet;
the first dryer 10 is configured to mix the separated first dry stage activated carbon raw material from the feeding device 60 with the hot air flow flowing in through the hot air flow inlet for a first preset period of time to form a second dry stage activated carbon raw material, and blow the second dry stage activated carbon raw material to the first cyclone 20 through the hot air flow;
the first cyclone 20 has a first raw material outlet for separating the second drying stage activated carbon raw material from the hot gas stream and discharging the separated second drying stage activated carbon raw material through the first raw material outlet.
The application provides an active carbon raw material drying device, adopting a double-dryer structure to dry active carbon raw materials twice, in particular, a hot gas inflow port is arranged on a first dryer 10, a second raw material inlet is arranged on a second dryer 30, active carbon raw materials are dried twice in the whole active carbon raw material drying process, hot gas flows into the first dryer 10 from the hot gas flow inlet, sequentially flows through the first dryer 10, the first cyclone 20, the second dryer 30 and the second cyclone 40, finally flows out of the hot gas flow outlet of the second cyclone 40, when the hot gas flows through the second dryer 30, the temperature of the hot gas flows downwards, the active carbon raw materials entering from the second raw material inlet are primarily dried by the hot gas flow flowing through the second dryer 30, the active carbon raw materials in the first drying section are blown to the second cyclone 40 after the primary drying, the active carbon raw materials in the first drying section are blown into the second cyclone 40 from the hot gas flow inlet of the second dryer 30, the hot gas flows out of the first cyclone 40 from the first drying section and the hot gas flow inlet of the first cyclone 40 into the first cyclone 40, the hot gas flows into the first drying section from the first cyclone 40, and the hot gas flow inlet of the active carbon raw materials in the first drying section is fully discharged from the first cyclone 40, the temperature of the active carbon raw materials in the first drying section is fully discharged from the first cyclone 40, the hot gas inlet is fully discharged from the first cyclone 10, and the active carbon raw materials in the first drying section is fully discharged from the active carbon raw materials is fully discharged from the first cyclone 10, and the active carbon raw materials is fully discharged from the active carbon raw materials in the active carbon raw materials after the active carbon raw materials, the active carbon raw materials is fully dried raw materials, and is fully dried in the active carbon raw materials, the active carbon raw materials after the active carbon raw materials, the active carbon raw materials is dried raw materials, and has been dried. The first preset temperature is 180-200 ℃, the hot air flow with the first preset temperature is directly from the hot air flow generating device 50, the separated active carbon raw material in the first drying section and the hot air flow are fully mixed for a first preset period of time at the first preset temperature to become active carbon raw material in the second drying section, the active carbon raw material in the second drying section is blown to the first cyclone separator 20 through the hot air flow, the first cyclone separator 20 separates the flowing hot air flow from the active carbon raw material in the second drying section, the separated active carbon raw material in the second drying section is discharged through the outlet of the first raw material, the separated hot air is conveyed to the second dryer 30 through the pipeline, the hot air flow delivered to the second dryer 30 is the hot air flow flowing through the second dryer 30 for preliminary drying of the activated carbon raw material, the hot air flow separated from the first cyclone separator 20 is used for drying the separated first drying section activated carbon raw material, heat is lost, so that the temperature of the separated hot air flow is reduced, and in order to further utilize the residual heat of the hot air flow separated from the first cyclone separator 20, the hot air flow with the residual heat is utilized for preliminary drying of the activated carbon raw material delivered into the second dryer 30, thereby being more beneficial to energy conservation, and improving the drying efficiency and drying quality of the activated carbon raw material.
In one embodiment, the hot air flow generating device 50 includes a liquefied gas combustion furnace for generating a hot air flow by burning liquefied gas, and a draught fan for blowing the generated hot air flow into the hot air inflow port of the first dryer 10 by the draught fan after the hot air flow reaches a first preset temperature (the first preset temperature is preferably 180-200 ℃); in another embodiment, the hot gas flow generating means 50 comprises an electric heater and a blower, the electric heater heating air flowing through the electric heater and introducing the heated air into the first dryer 10 with the blower, the introduced heated air being used to dry the separated first stage dry stage activated carbon feedstock.
In one embodiment, the second dryer 30 includes a second cylindrical bin, a second air inlet is provided on a side wall of the second cylindrical bin, the second air inlet is communicated with the first cyclone 20 through a pipeline, a hot air flow enters the second cylindrical bin through the pipeline, a second dryer discharge port is provided at a top end (far away from the ground) of the second cylindrical bin, a spiral volute channel is formed in an inner cavity of the second cylindrical bin, a starting end of the spiral volute channel is the second air inlet, the spiral volute channel forms a cylindrical structure toward an inner spiral center, an end of the spiral volute channel is communicated with the cylindrical structure, the spiral volute channel is a second cyclone air distribution belt, the active carbon raw material entering from a second raw material inlet of the second dryer 30 is blown by the hot air flow entering from the second air inlet to advance along the spiral channel, in the advancing process, hot air flow is continuously mixed with active carbon raw materials to finish heat exchange so as to dry the active carbon raw materials to obtain active carbon raw materials in a first drying section, the hot air flow drives the active carbon raw materials in the first drying section to enter a second cyclone separator 40, the second cyclone separator 40 is cylindrical, a second inlet is arranged in the tangential direction of the outer wall of the second cyclone separator 40, the hot air flow carries the active carbon raw materials in the first drying section to enter the second cyclone separator 40 from the second inlet in the tangential direction to form rotary motion, the active carbon raw materials in the first drying section have larger inertial centrifugal force under the driving of the hot air flow, the active carbon raw materials in the first drying section are separated from the hot air flow under the action of centrifugal force, the separated active carbon raw materials in the first drying section are discharged from a second raw material outlet of the second cyclone separator 40, the separated hot air flows through the hot air outflow opening to be discharged, the separated active carbon raw materials of the first drying section are conveyed to the first dryer 10 through the feeding device 60, the first dryer 10 comprises a first columnar bin, the side wall of the first columnar bin is provided with a hot air inflow opening, the top end (far away from the ground) of the first columnar bin is provided with a first dryer discharge opening, a spiral volute channel is formed in the inner cavity of the first columnar bin, the starting end of the spiral volute channel is the hot air inlet, a cylindrical structure is formed in the spiral volute channel towards the inner spiral center, the tail end of the spiral volute channel is communicated with the cylindrical structure, the spiral volute channel is a first rotational flow wind distribution belt, the separated active carbon raw materials of the first drying section entering from the first raw material inlet of the first dryer 10 are blown by the hot air entering from the hot air inlet and advance along the spiral channel, the hot air flow with a first preset temperature in the advancing process is continuously mixed with the separated first drying section active carbon raw material to finish heat exchange so as to dry the separated first drying section active carbon raw material to obtain a second drying section active carbon raw material, the hot air flow drives the second drying section active carbon raw material to enter the first cyclone separator 10, the first cyclone separator 20 is cylindrical, a first inlet is arranged on the first cyclone separator 20 along the tangential direction of the outer wall, the hot air flow carries the second drying section active carbon raw material to enter the first cyclone separator 20 from the first inlet in the tangential direction to form rotary motion, the second drying section active carbon raw material has larger inertial centrifugal force under the driving of the hot air flow, the second drying section active carbon raw material is separated from the hot air flow under the action of centrifugal force, the separated second drying stage activated carbon feedstock exits the first feedstock outlet of the first cyclone 20 and the separated hot gas stream is conveyed via a conduit to the second dryer 30 for primary drying of the activated carbon feedstock.
In order to control the feeding speed of the activated carbon raw material, preferably, the drying apparatus further comprises a feeding device 70, the feeding device 70 comprises a hopper 71 and a feeding conveyor 72, a feeding port of the feeding conveyor 72 is communicated with the hopper 71, and a discharging port of the feeding conveyor 72 is communicated with the second raw material inlet of the second dryer 30.
In one embodiment, the hopper 71 is a housing having a large open end and a small open end, the small open end being in communication with the inlet of the feed conveyor 72, and the activated carbon feedstock being poured into the hopper 71 from the large open end, the large top and small bottom configuration controlling the rate of the activated carbon feedstock entering from the inlet of the feed conveyor 72. The activated carbon feedstock enters a feed conveyor 72, which feed conveyor 72 conveys the activated carbon feedstock into the second dryer 30 via a second feedstock inlet of the second dryer 30, and in order to facilitate the conveyance of the activated carbon feedstock, the feed conveyor 72 preferably comprises a rectangular housing and a screw conveyor shaft disposed within the rectangular housing and parallel to the bottom surface of the proximal ground within the rectangular housing.
Preferably, the feeding device 60 includes a first conveyor 61 and a second conveyor 62, the first conveyor 61 is vertically disposed with the second conveyor 62, a feed inlet of the first conveyor 61 is communicated with a second raw material outlet of the second cyclone separator 40, a discharge outlet of the first conveyor 61 is engaged with a feed inlet of the second conveyor 62, and a discharge outlet of the second conveyor 62 is connected with a first raw material inlet of the first dryer 10.
In one embodiment, the first conveyor 61 and the second conveyor 62 each comprise a feed housing and at least one screw conveyor shaft.
In order to ensure that the activated carbon raw material is sufficiently dried, it is preferable that the first preset time period is 2 to 8 seconds and the second preset time period is 2 to 8 seconds.
The following describes a method for drying an activated carbon raw material provided by an embodiment of the present application with reference to the accompanying drawings.
Referring to fig. 2, an embodiment of the present application provides a method for drying an activated carbon raw material, which is applied to an activated carbon raw material drying apparatus provided by the present application, and the method includes the following steps:
step S10, generating a first hot air flow with a preset temperature through a hot air flow generating device 50, conveying the hot air flow from a hot air flow inlet of the first dryer 10 into the first dryer 10, sequentially flowing through the first cyclone separator 20, the second dryer 30 and the second cyclone separator 40, and flowing out from a hot air flow outlet of the second cyclone separator 40;
step S20 of mixing the activated carbon raw material entering from the second raw material inlet of the second dryer 30 with the hot air flow flowing through the second dryer 30 for a second preset period of time through the second dryer 30 to form a first dry stage activated carbon raw material, and blowing the first dry stage activated carbon raw material to the second cyclone 40 through the hot air flow;
step S30 of separating the first drying stage activated carbon raw material from the hot gas stream by the second cyclone 40 and discharging the separated first drying stage activated carbon raw material through the second raw material outlet;
step S40, conveying the separated first dry stage activated carbon raw material discharged from the second raw material outlet into the first dryer 10 through the first raw material inlet of the first dryer 10 by the feeding device 60;
step S50 of mixing the separated first dry stage activated carbon raw material from the feeding device 60 with the hot air flow flowing in through the hot air flow inlet for a first preset period of time through the first dryer 10 to form a second dry stage activated carbon raw material, and blowing the second dry stage activated carbon raw material to the first cyclone 20 through the hot air flow;
step S60, separating the second drying stage activated carbon raw material from the hot gas flow through the first cyclone 20, and discharging the separated second drying stage activated carbon raw material through the first raw material outlet.
Preferably, the first preset time period is 2-8 seconds, and the second preset time period is 2-8 seconds.
The active carbon raw material drying equipment provided by the application adopts a double-dryer structure to dry active carbon raw materials, specifically, the second dryer and the second cyclone separator are used for carrying out primary drying on the active carbon raw materials by utilizing hot air flowing through the second dryer, the hot air used for primary drying is hot air separated from the step of finally drying the active carbon raw materials of the active carbon raw materials, the active carbon raw materials are subjected to primary drying to form a first dry section active carbon raw material and are separated from the first dry section active carbon raw material through the second cyclone separator, the separated first dry section active carbon raw material is conveyed to the first dryer through the feeding device, the separated first dry section active carbon raw material is mixed with the hot air with a first preset temperature flowing in from the hot air inlet in the first dryer to form a second dry section active carbon raw material, the second dry section active carbon raw material is blown to the first cyclone separator through the hot air, the second dry section active carbon raw material and the hot air separated from the first cyclone separator are separated in the first dry section active carbon raw material and the first dry section active carbon raw material is discharged through the first dry section active carbon outlet through the first cyclone separator, the efficiency of the two dry section active carbon raw material is improved, and the primary drying raw material quality is improved, and the drying efficiency is improved. The application also provides an active carbon raw material drying method applied to the active carbon raw material drying equipment. The active carbon raw material drying equipment and the drying method provided by the application can improve the drying efficiency and the drying quality of the active carbon raw material, and simultaneously save more energy.
The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the application are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the application can be made without departing from the spirit of the application, which should also be considered as disclosed herein.
Claims (8)
1. An activated carbon feedstock drying apparatus, the drying apparatus comprising: a first dryer (10), a first cyclone separator (20), a second dryer (30), a second cyclone separator (40), a hot air flow generating device (50) and a feeding device (60);
the hot air flow generating device (50) is used for generating hot air flow with a first preset temperature and conveying the hot air flow;
the first dryer (10), the first cyclone separator (20), the second dryer (30) and the second cyclone separator (40) are sequentially communicated through pipelines, the first dryer (10) is provided with a hot air inlet and a first raw material inlet, the hot air generating device (50) is communicated with the hot air inlet of the first dryer (10), the second cyclone separator (40) is provided with a hot air outlet, the hot air conveyed from the hot air generating device (50) flows into the hot air inlet of the first dryer (10), sequentially flows through the first cyclone separator (20), the second dryer (30) and the second cyclone separator (40), and flows out of the hot air outlet of the second cyclone separator (40);
the second dryer (30) comprises a second cylindrical bin, a second air inlet and a second raw material inlet are formed in the side wall of the second cylindrical bin, the second air inlet is communicated with the first cyclone separator (20) through a pipeline, a spiral volute channel is formed in the inner cavity of the second cylindrical bin, the starting end of the spiral volute channel in the second cylindrical bin is the second air inlet, hot air flowing out of the first cyclone separator (20) enters the second dryer (30) from the second air inlet, and the second dryer (30) is used for mixing active carbon raw materials entering from the second raw material inlet with the hot air flowing through the second dryer (30) for a second preset time period to form a first dry section active carbon raw material and blowing the first dry section active carbon raw material to the second cyclone separator (40) along the spiral volute channel in the second cylindrical bin through the hot air;
the second cyclone (40) has a second feedstock outlet, the second cyclone (40) being configured to separate the first drying stage activated carbon feedstock from the hot gas stream and to discharge the separated first drying stage activated carbon feedstock through the second feedstock outlet;
the feeding device (60) is respectively communicated with a first raw material inlet of the first dryer (10) and a second raw material outlet of the second cyclone separator (40) and is used for conveying the separated first drying section active carbon raw material discharged from the second raw material outlet into the first dryer (10) through the first raw material inlet;
the first dryer (10) comprises a first columnar bin, the hot gas inflow port and the first raw material inlet are arranged on the side wall of the first columnar bin, a spiral volute channel is formed in the inner cavity of the first columnar bin, the initial end of the spiral volute channel in the first columnar bin is the hot gas inflow port, hot gas flow conveyed from the hot gas flow generating device (50) enters the first dryer, the first dryer (10) is used for mixing separated first dry-section active carbon raw materials from the feeding device (60) with the hot gas flow flowing in through the hot gas inflow port for a first preset time period to form second dry-section active carbon raw materials, and the second dry-section active carbon raw materials are blown to the first cyclone separator (20) along the spiral volute channel in the first columnar bin through the hot gas flow;
the first cyclone (20) has a first feedstock outlet for separating the second drying stage activated carbon feedstock from the hot gas stream and discharging the separated second drying stage activated carbon feedstock through the first feedstock outlet.
2. Drying apparatus according to claim 1, further comprising a feeding device (70), the feeding device (70) comprising a hopper (71) and a feeding conveyor (72), a feed inlet of the feeding conveyor (72) being in communication with the hopper (71), a discharge outlet of the feeding conveyor (72) being in communication with a second raw material inlet of the second dryer (30).
3. Drying apparatus according to claim 2, wherein the feed conveyor (72) comprises a rectangular housing and a screw conveyor shaft disposed within the rectangular housing and parallel to a bottom surface of the proximal end within the rectangular housing.
4. Drying apparatus according to claim 1, wherein the feeding device (60) comprises a first conveyor (61) and a second conveyor (62), the first conveyor (61) is arranged vertically to the second conveyor (62), the feed inlet of the first conveyor (61) is in communication with the second feed outlet of the second cyclone (40), the discharge outlet of the first conveyor (61) is in engagement with the feed inlet of the second conveyor (62), and the discharge outlet of the second conveyor (62) is connected to the first feed inlet of the first dryer (10).
5. Drying apparatus according to claim 1, wherein the first preset temperature is 180 ℃ to 200 ℃.
6. The drying apparatus according to claim 1, wherein the first preset time period is 2-8 seconds and the second preset time period is 2-8 seconds.
7. A method for drying an activated carbon raw material, applied to the activated carbon raw material drying apparatus of any one of claims 1 to 6, characterized in that the drying method comprises:
generating a first hot air flow with a preset temperature through a hot air flow generating device (50), conveying the hot air flow into the first dryer (10) from a hot air flow inlet of the first dryer (10), sequentially flowing through the first cyclone separator (20), the second dryer (30) and the second cyclone separator (40), and flowing out from a hot air flow outlet of the second cyclone separator (40);
mixing the activated carbon feedstock entering from a second feedstock inlet of the second dryer (30) with the hot gas flow through the second dryer (30) for a second preset period of time through the second dryer (30) to form a first dry stage activated carbon feedstock, and blowing the first dry stage activated carbon feedstock to the second cyclone (40) along a spiral volute passage within the second dryer (30) through the hot gas flow;
separating the first dry stage activated carbon feedstock from the hot gas stream by the second cyclone (40) and discharging the separated first dry stage activated carbon feedstock through the second feedstock outlet;
conveying separated first dry stage activated carbon feedstock exiting said second feedstock outlet through said feed means (60) into said first dryer (10) via a first feedstock inlet of said first dryer (10);
mixing the separated first dry stage activated carbon feedstock from the feed device (60) with the hot gas stream flowing in through the hot gas stream inlet for a first preset period of time by the first dryer (10) to form a second dry stage activated carbon feedstock, and blowing the second dry stage activated carbon feedstock to the first cyclone (20) along a spiral volute passage in the first dryer (10) by the hot gas stream;
separating the second drying stage activated carbon feedstock from the hot gas stream by the first cyclone (20) and discharging the separated second drying stage activated carbon feedstock through the first feedstock outlet.
8. The drying method according to claim 7, wherein the first preset time period is 2-8 seconds, and the second preset time period is 2-8 seconds.
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| CN208635532U (en) * | 2018-08-09 | 2019-03-22 | 衢州市蓝天环保节能设备厂 | Activated carbon raw material drying equipment |
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2018
- 2018-08-09 CN CN201810903671.7A patent/CN108775805B/en active Active
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|---|---|---|---|---|
| CN201331248Y (en) * | 2008-12-31 | 2009-10-21 | 张文华 | Exhaust gas circulation type helix tube pneumatic drier |
| CN204404740U (en) * | 2015-01-04 | 2015-06-17 | 林久占 | A kind of pneumatic drier for dry red ginseng rice |
| CN206447751U (en) * | 2016-12-15 | 2017-08-29 | 陕西孚嘉石化科技有限公司 | A kind of mud drying device |
| CN107238256A (en) * | 2017-07-17 | 2017-10-10 | 湖南贝恩叮当猫婴童用品有限公司 | Efficient spray drying device is used in a kind of milk powder processing |
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