CN211782288U - Spouted fluidized bed dryer - Google Patents
Spouted fluidized bed dryer Download PDFInfo
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- CN211782288U CN211782288U CN202020433734.XU CN202020433734U CN211782288U CN 211782288 U CN211782288 U CN 211782288U CN 202020433734 U CN202020433734 U CN 202020433734U CN 211782288 U CN211782288 U CN 211782288U
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- fluidized bed
- bed body
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Abstract
The utility model belongs to the technical field of drying machinery equipment technique and specifically relates to a spout fluidized bed desicator is related to. The spouted fluidized bed dryer includes: the bed body, the drying chamber, the packing layer, the feed liquid spraying device, the gas inlet, the gas outlet, the sight glass and the fluidized bed supporting legs; the lower part of the bed body is in a cone cylinder shape and is connected with a gas inlet; the upper part of the bed body is cylindrical and is connected with a gas outlet; the bed body is characterized in that a drying chamber is arranged inside the bed body, a packing layer is arranged on the lower portion of the drying chamber, a packing supporting plate is arranged on the lower portion of the packing layer and fixed on the bed body, peep mirrors are arranged in the middle of the bed body and located around the upper portion of the packing layer, a feed liquid spraying device is arranged in the center of the drying chamber on the upper portion of the packing layer, and fluidized bed supporting legs are arranged outside the bed body.
Description
Technical Field
The utility model belongs to the technical field of drying machinery equipment technique and specifically relates to a spout fluidized bed desicator is related to.
Background
At present, the fluidization technology originated in 1921, and the earliest application to dry industrial mass production was the Dol-Orlevern solid fluidization device established in the United states in 1948, and China did not start to develop the technology until 1958. In the drying process of the fluidized bed dryer, the bulk materials are placed on the pore plate, the lower part of the pore plate conveys gas to enable the material particles to be in a suspension state just like liquid boiling, so that the material particles are fully contacted with the gas to carry out rapid heat transfer and moisture transfer. The fluidized drying has the advantages of good heat transfer effect, uniform temperature distribution, various operation forms, adjustable material retention time, low investment cost, small maintenance workload and the like, and is widely developed and applied. However, the existing equipment has low heat transfer efficiency due to insufficient contact of material particles, and the drying effect is influenced.
The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a spout fluidized bed dryer to solve the technical problem who exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the present invention provides a spouted fluidized bed dryer, comprising: the bed body, the drying chamber, the packing layer, the feed liquid spraying device, the gas inlet, the gas outlet, the sight glass and the fluidized bed supporting legs; the lower part of the bed body is in a cone cylinder shape and is connected with a gas inlet; the upper part of the bed body is cylindrical and is connected with a gas outlet; the bed body is characterized in that a drying chamber is arranged inside the bed body, a packing layer is arranged on the lower portion of the drying chamber, a packing supporting plate is arranged on the lower portion of the packing layer and fixed on the bed body, peep mirrors are arranged in the middle of the bed body and located around the upper portion of the packing layer, a feed liquid spraying device is arranged in the center of the drying chamber on the upper portion of the packing layer, and fluidized bed supporting legs are arranged outside the bed body.
As a further technical proposal, a gas inlet of the bed body is connected with a gas inlet fan through a gas inlet pipeline.
As a further technical proposal, the gas outlet of the bed body is connected with a gas outlet pipeline.
As a further technical scheme, a pressure detection element, a temperature detection element and a flow detection element are respectively mounted on the air inlet pipeline and the air outlet pipeline.
As a further technical proposal, a gas inlet of the bed body is provided with a gas distribution device.
As a further aspect, the gas distribution apparatus includes: the disc structure is concentrically provided with a central air distribution area, an outer air distribution area and an edge welding area from inside to outside;
the central air distribution area is provided with a plurality of first vent holes;
the external air distribution area is provided with a plurality of second air vents;
the edge welding area is arranged at the gas inlet of the bed body.
As a further technical solution, the ratio of the diameter of the central air distribution area to the diameter of the disc structure is between 0.3 and 0.7.
As a further technical solution, the diameter of the first vent hole is larger than the diameter of the second vent hole.
As a further technical solution, the number of the first vent holes is smaller than the number of the second vent holes.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
the utility model provides a spout fluidized bed dryer can be used to the drying of the higher material of water content. Such as drying of high salinity wastewater, drying of landfill leachate, drying of wastewater concentrate, etc. When the fluidized bed is in operation, gas with higher temperature enters from a gas inlet at the lower part of the fluidized bed, reasonable fluidization wind speed is set, and the high-temperature gas blows the packing layer to enable the packing layer to be in a fountain-shaped fluidization state. Then the feed liquid spraying device sprays feed liquid to be dried to the surface of the packing layer. The packing layer in a fluidized state can provide contact area and contact time required by contact of the feed liquid and the high-temperature gas, after the feed liquid and the high-temperature gas are fully contacted, moisture in the feed liquid is evaporated and taken away by the high-temperature gas, and residual substances are dried and crystallized on the surface of the packing. And because the filler layer is in a fluidized state, all fillers can collide, rub and extrude with each other, so that most dry substances are ground into powder and finally discharged together with high-temperature gas. The temperature of the high-temperature gas is reduced after passing through the packing layer, and the high-temperature gas is discharged from a gas outlet at the upper part of the fluidized bed.
The spouted fluidized bed dryer has the following advantages:
1. the structure is compact, and the occupied area is small;
2. the operation is stable and reliable;
3. the operation is simple, and the maintenance amount is small.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a spouted fluidized bed dryer provided in an embodiment of the present invention;
fig. 2 is a schematic view of a spouted fluidized bed dryer provided in an embodiment of the present invention after being connected to a pipeline;
fig. 3 is a schematic structural diagram of a gas distribution device according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating an air flow principle of an air distribution device according to an embodiment of the present invention.
Icon: 1-a gas inlet; 2-bed body; 3-fluidized bed support legs; 4-a feed liquid spraying device; 5-a drying chamber; 6-peep hole; 7-a filler layer; 8-a filler pallet; 9-gas outlet; 10-an air inlet fan; 11-an outlet pipe; 12-an external air distribution area; 13-central air distribution area; 14-edge weld zone; 15-a first vent; 16-a second vent hole; 17-gas distribution means.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. 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 invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 invention can be understood according to specific situations by those skilled in the art.
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Example one
Referring to fig. 1 to 4, the present embodiment provides a spouted fluidized bed dryer including: the bed body 2, the drying chamber 5, the packing layer 7, the feed liquid spraying device 4, the gas inlet 1, the gas outlet 9, the sight glass 6 and the fluidized bed supporting legs 3; the lower part of the bed body 2 is in a cone cylinder shape and is connected with the gas inlet 1; the upper part of the bed body 2 is cylindrical and is connected with a gas outlet 9; the inside of the bed body 2 is provided with a drying chamber 5, the lower part of the drying chamber 5 is provided with a packing layer 7, the lower part of the packing layer 7 is provided with a packing layer board 8, the packing layer board 8 is fixed on the bed body 2, the middle part of the bed body 2 is provided with a sight glass 6 around the packing layer 7, the center of the drying chamber 5 on the upper part of the packing layer 7 is provided with a feed liquid spraying device 4, and the outside of the bed body 2 is provided with fluidized bed supporting legs 3.
When the fluidized bed runs, gas with higher temperature enters from the gas inlet 1 at the lower part of the fluidized bed, reasonable fluidization wind speed is set, and the high-temperature gas blows the packing layer 7 to enable the packing layer 7 to present a fountain-shaped fluidization state. Then the feed liquid spraying device 4 sprays feed liquid to be dried to the surface of the packing layer 7. The packing layer 7 in a fluidized state can provide contact area and contact time required by contact of the feed liquid and the high-temperature gas, after the feed liquid and the high-temperature gas are fully contacted, moisture in the feed liquid is evaporated and taken away by the high-temperature gas, and residual substances are dried and crystallized on the surface of the packing. And because the packing layer 7 is in a fluidized state, all the packing materials can collide, rub and extrude with each other, so that most dry substances are ground into powder and finally discharged together with high-temperature gas. The high-temperature gas passes through the filler layer 7, the temperature is reduced, and finally the gas is discharged from a gas outlet 9 at the upper part of the fluidized bed.
In this embodiment, as a further technical solution, the gas inlet 1 of the bed body 2 is connected with the air inlet fan 10 through an air inlet pipeline. Correspondingly, the gas outlet 9 of the bed body 2 is connected with a gas outlet pipeline 11.
In this embodiment, as a further technical solution, a pressure detection element, a temperature detection element and a flow rate detection element are respectively installed on the air inlet pipeline and the air outlet pipeline 11.
In this embodiment, as a further technical solution, the gas inlet 1 of the bed body 2 is provided with a gas distribution device 17, and the gas distribution device 17 can generate two or more different flow rates and flow rates, and meanwhile, the gas flow generates turbulence due to the difference between the flow rate and the flow rate, so as to realize that the material driven by the gas flow generates a fountain-like fluidized state.
Specifically, the gas distribution device 17 includes: the disc structure is provided with a central air distribution area 13, an outer air distribution area 12 and an edge welding area 14 from inside to outside in a concentric manner;
the central air distribution area 13 is provided with a plurality of first vent holes 15;
the external air distribution area 12 is provided with a plurality of second vent holes 16;
the edge weld zone 14 is mounted to the gas inlet 1 of the bed 2.
As a further technical solution, the ratio of the diameter of the central air distribution area 13 to the diameter of the disc structure is between 0.3 and 0.7.
As a further technical solution, the diameter of the first vent hole 15 is larger than the diameter of the second vent hole 16.
As a further technical solution, the number of the first ventilation holes 15 is smaller than the number of the second ventilation holes 16.
The lower part of the gas distribution device 17 (the lower part of the disc structure) is connected with an inlet duct for inlet air. The upper part of the gas distribution device 17 (the lower part of the disc structure) is connected with the air inlet and is used for providing outlet air with different flow rates and flow rates into the drying chamber. Of course, the gas distribution device 17 may or may not be provided, and here, it is not necessary that the gas distribution device 17 is deleted, which does not affect the implementation of the present embodiment, and the technical problem of the present application can be solved as well.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
the utility model provides a spout fluidized bed dryer can be used to the drying of the higher material of water content. Such as drying of high salinity wastewater, drying of landfill leachate, drying of wastewater concentrate, etc. When the fluidized bed runs, gas with higher temperature enters from the gas inlet 1 at the lower part of the fluidized bed, reasonable fluidization wind speed is set, and the high-temperature gas blows the packing layer 7 to enable the packing layer 7 to present a fountain-shaped fluidization state. Then the feed liquid spraying device 4 sprays feed liquid to be dried to the surface of the packing layer 7. The packing layer 7 in a fluidized state can provide contact area and contact time required by contact of the feed liquid and the high-temperature gas, after the feed liquid and the high-temperature gas are fully contacted, moisture in the feed liquid is evaporated and taken away by the high-temperature gas, and residual substances are dried and crystallized on the surface of the packing. And because the packing layer 7 is in a fluidized state, all the packing materials can collide, rub and extrude with each other, so that most dry substances are ground into powder and finally discharged together with high-temperature gas. The high-temperature gas passes through the filler layer 7, the temperature is reduced, and finally the gas is discharged from a gas outlet 9 at the upper part of the fluidized bed.
The spouted fluidized bed dryer has the following advantages:
1. the structure is compact, and the occupied area is small;
2. the operation is stable and reliable;
3. the operation is simple, and the maintenance amount is small.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A spouted fluidized bed dryer comprising: the bed body, the drying chamber, the packing layer, the feed liquid spraying device, the gas inlet, the gas outlet, the sight glass and the fluidized bed supporting legs;
the lower part of the bed body is in a cone cylinder shape and is connected with a gas inlet;
the upper part of the bed body is cylindrical and is connected with a gas outlet;
the bed body is characterized in that a drying chamber is arranged inside the bed body, a packing layer is arranged on the lower portion of the drying chamber, a packing supporting plate is arranged on the lower portion of the packing layer and fixed on the bed body, peep mirrors are arranged in the middle of the bed body and located around the upper portion of the packing layer, a feed liquid spraying device is arranged in the center of the drying chamber on the upper portion of the packing layer, and fluidized bed supporting legs are arranged outside the bed body.
2. The spouted fluidized bed dryer of claim 1 wherein the gas inlet of the bed is connected to an air inlet blower via an air inlet conduit.
3. The spouted fluidized bed dryer of claim 2 wherein the gas outlet of the bed is connected to a gas outlet conduit.
4. The spouted fluidized bed dryer of claim 3, wherein the inlet duct and the outlet duct are respectively provided with a pressure detecting element, a temperature detecting element and a flow rate detecting element.
5. The spouted fluidized bed dryer of claim 1 wherein the gas inlet of the bed is fitted with a gas distribution device.
6. The spouted fluidized bed dryer of claim 5, wherein the gas distribution device comprises: the disc structure is concentrically provided with a central air distribution area, an outer air distribution area and an edge welding area from inside to outside;
the central air distribution area is provided with a plurality of first vent holes;
the external air distribution area is provided with a plurality of second air vents;
the edge welding area is arranged at the gas inlet of the bed body.
7. The spouted fluidized bed dryer of claim 6 wherein the ratio of the diameter of the central plenum to the diameter of the disk structure is between 0.3 and 0.7.
8. The spout fluidized bed dryer of claim 6, wherein the diameter of the first vent is greater than the diameter of the second vent.
9. The spout fluidized bed dryer of claim 6, wherein the number of first vents is less than the number of second vents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020433734.XU CN211782288U (en) | 2020-03-30 | 2020-03-30 | Spouted fluidized bed dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020433734.XU CN211782288U (en) | 2020-03-30 | 2020-03-30 | Spouted fluidized bed dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211782288U true CN211782288U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020433734.XU Active CN211782288U (en) | 2020-03-30 | 2020-03-30 | Spouted fluidized bed dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211782288U (en) |
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2020
- 2020-03-30 CN CN202020433734.XU patent/CN211782288U/en active Active
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