CN209744847U

CN209744847U - Fluidized bed dryer

Info

Publication number: CN209744847U
Application number: CN201920316030.1U
Authority: CN
Inventors: 李永兆; 李斌杰
Original assignee: Qingdao Chuangke Machinery Equipment Manufacturing Co Ltd
Current assignee: Qingdao Chuangke Machinery Equipment Manufacturing Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2019-12-06
Anticipated expiration: 2029-03-13

Abstract

The utility model provides a fluidized bed dryer, includes feeding portion (9), ejection of compact portion (10) and is located a plurality of drying sections between feeding portion (9) and ejection of compact portion (10) for dry the material segmentation of different humidity, the inside bottom surface of drying chamber of a plurality of drying sections is equipped with orifice plate (7), and orifice plate (7) in the different drying sections have different pore structures, and the material can move through behind each drying section discharge portion (10) discharge, preferably, the drying section is including drying section one (1), drying section two (2), three (3) of drying section and drying section four (4) that establish ties in proper order, and wet air dust collector (5) are connected to drying section one (1) and drying section two (2), and dry air dust collector (6) are connected to drying section three (3) and drying section four (4). The materials with high and low moisture contents are dried in a segmented mode through the series connection of the drying sections, tail gases with different humiture temperatures are recycled respectively, and the materials with high moisture contents and large particles can be dried to ultralow moisture contents on the premise of saving energy consumption.

Description

Fluidized bed dryer

Technical Field

the utility model relates to a drying-machine technical field specifically is a can dry high moisture, large granule material to boiling bed drying-machine of ultralow moisture.

Background

The fluidized bed dryer is one kind of drying machinery, and is named after that, because it can make granular materials jump and turn over violently, under the action of high-speed airflow, the materials are blown up and become suspension state, the granules are separated from each other, and are dried in the process of boiling and turning over, and because of the action of wind pressure, the materials are formed into boiling state in the dryer, and are extensively contacted with hot air, so that the drying of the materials can be completed in a short time.

Although the traditional fluidized bed dryer has good heat transfer effect and high drying speed, the traditional fluidized bed dryer is mainly used for drying loose and non-explosive solid materials, has high requirements on the moisture and the granularity of the dried materials, is not suitable for the materials with overlarge and undersize particle sizes, high water content and easy caking, and has higher drying unit consumption and cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the not enough of ebullated bed drying-machine in the aspect of material adaptability and energy consumption among the prior art, provide a can be with high moisture, large granule material stoving to the ebullated bed drying-machine of ultralow moisture.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides a fluidized bed dryer, includes feeding portion, ejection of compact portion and is located a plurality of drying sections between feeding portion and the ejection of compact portion, a plurality of drying sections are connected through the tandem system for dry the material segmentation of different humidity and granularity, the inside bottom surface of drying chamber of a plurality of drying sections is equipped with the orifice plate, in the different drying sections the orifice plate has different pore structures, and the material can remove behind each drying section warp ejection of compact portion discharges, the drying section includes hot-air inlet and tail gas discharge port, one section or the cyclic utilization of multistage exhaust tail gas in the drying section can be handled after.

Preferably, the drying section comprises a first drying section, a second drying section, a third drying section and a fourth drying section which are sequentially connected in series, the feeding portion is arranged at one end of the first drying section, and the discharging portion is arranged at one end of the fourth drying section.

Furthermore, hot air inlets of the first drying section, the second drying section, the third drying section and the fourth drying section are all connected with a dust removal device.

Furthermore, hot air inlets of the first drying section and the second drying section are connected with a wet air dust removal device, and hot air inlets of the third drying section and the fourth drying section are connected with a dry air dust removal device.

further, the tail gas discharged from the tail gas discharge port of the first drying section and/or the second drying section is introduced into the dry air dust removal device, and the tail gas discharged from the tail gas discharge port of the third drying section and/or the fourth drying section is introduced into the wet air dust removal device.

Further, the wet air dust removal device and the dry air dust removal device are respectively connected with a high-pressure fan.

Furthermore, the wet air dust removal device and the dry air dust removal device are both provided with air volume adjusting valves.

further, an angle adjusting part is arranged above the orifice plate on the bottom surface in the drying chamber of the first drying section and is close to the feeding part.

Further, the different pore structures are of different cross-sectional areas and/or heights and/or angles.

The utility model has the advantages that:

the fluidized bed dryer of the utility model, through selecting the sectional area, height and angle of different punched plate holes, realizes the drying capacity suitable for materials with different moisture and large particles by connecting a plurality of sections in series, and does not influence the use when the particles change due to drying and blasting of the materials;

The fluidized bed dryer of the utility model fully optimizes the installation height, improves the space utilization rate and is convenient to adjust the air speed and the air quantity;

The utility model discloses a fluidized bed dryer has reduced carminative dust content through the suspension settlement zone (region more than the bed board) of equipment and the dust collecting equipment who corresponds (dry air dust collector and humid air dust collector).

The utility model discloses a fluidized bed drying-machine, with hot humid gas according to its different humiture recycle, reduced the unit consumption and the cost of drying.

Drawings

FIG. 1 is a schematic view of the appearance and structure of an embodiment of the present invention;

Fig. 2 is a schematic view of the internal structure of the drying chamber and the recycling of tail gas according to the embodiment of the present invention.

In the figures, the various reference numbers are:

the device comprises a first drying section 1, a second drying section 2, a third drying section 3, a fourth drying section 4, a wet air dust removal device 5, a dry air dust removal device 6, a pore plate 7, an angle adjusting part 8, a feeding part 9, a discharging part 10, a mechanical pushing part 11, a high-pressure fan 12, fresh air 13, a first section and a second section of exhaust air 14, a third section of exhaust air 15 and a fourth section of exhaust air 16.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

as shown in fig. 1 and 2, the fluidized bed dryer of the present embodiment includes a feeding portion 9, a discharging portion 10, and a first drying section 1, a second drying section 2, a third drying section 3, and a fourth drying section 4 sequentially connected in series between the feeding portion 9 and the discharging portion 10, wherein the feeding portion 9 is disposed at one end of the first drying section 1, the discharging portion 10 is disposed at one end of the fourth drying section 4, and the first drying section 1, the second drying section 2, the third drying section 3, and the fourth drying section 4 are configured to dry materials with different humidity and particle size in a segmented manner, as shown in fig. 2, a perforated plate 7 is disposed at an inner bottom surface of a drying chamber of each drying section, and the perforated plates 7 in different drying sections have different hole structures, so that the materials can move in a wavy manner as shown by a partially enlarged portion in fig. 2, and are discharged through the discharging portion 10 after moving through each drying section, where main holes of the different hole structures refer to cross-sectional areas, partial areas, Difference in height and/or angle.

Each of the drying sections includes a hot air inlet and a tail gas outlet, as shown in fig. 1, the hot air inlets of the first drying section 1 and the second drying section 2 are connected with a wet air dust removing device 5, the hot air inlets of the third drying section 3 and the fourth drying section 4 are connected with a dry air dust removing device 6, tail gas discharged from the tail gas outlet of the first drying section 1 and/or the second drying section 2 is introduced into the dry air dust removing device 6, tail gas discharged from the tail gas outlet of the third drying section 3 and/or the fourth drying section 4 is introduced into the wet air dust removing device 5, and tail gas of each drying section is heated again and subjected to dust removal by the dust removing device for recycling in the next or previous drying section, and for this purpose, the wet air dust removing device 5 and the dry air dust removing device 6 are respectively connected with a high pressure fan 12.

Preferably, the wet air dust removing device 5 and the dry air dust removing device 6 are both provided with air volume adjusting valves.

As shown in fig. 2, an angle adjusting part 8 is arranged above the orifice plate 7 on the bottom surface of the drying chamber inside the drying section 1 and is close to the feeding part 9, and the angle adjusting part 8 forms a variable angle with the horizontal plane, such as 30-60 degrees, so as to adapt to the supply of materials with different humidity and granularity, and the change of the angle can be realized by a mechanical pushing part 11 and the like.

the working principle of the utility model is as follows:

Wet materials to be dried enter the dryer through the feeding portion 9, the angle adjusting portion 8 of the bed layer is arranged according to the moisture and particle difference of the materials, the materials are enabled to move forwards in a wave mode under the blowing of fresh air 13, and due to the fact that the moisture and particle size of the materials are changed when the materials pass through all sections, the materials are enabled to move forwards stably according to required speed through adjusting the wind speed and the angle of the different sections, and finally the dry materials are obtained at an outlet.

Examples of recycling of the tail gas are as follows:

The heated fresh air 13 is brought into the dryer by the high-pressure fan 12, the temperature of the fresh air 13 is reduced and the humidity of the fresh air 13 is increased after the fresh air 13 blows materials, the temperature is reduced and the humidity is increased to become a two-section exhaust air 14 to be discharged, dry dust is entrained in the two-section exhaust air 14 and is removed by the dry air dust removal device 6, the hot air humidity of the two-section exhaust air 14 is lower than that of the three-section exhaust air 15, the two-section exhaust air 14 can be directly used for drying in a three-section system after secondary heating, similarly, the three-section exhaust air 15 is also recycled to the one-section system to realize heat recycling, the humidity of the three-section exhaust air 15 and the humidity of the four-section exhaust air 16 are high, the wet air dust removal device 5 can be used for dust removal, the finally discharged hot and.

The above-mentioned embodiment is only the preferred embodiment of the present invention, all the basis the utility model discloses a technical entity all belongs to the utility model discloses any simple modification, modification and substitution change to what the above embodiment was done the within range of technical scheme.

Claims

1. The utility model provides a fluidized bed dryer, its characterized in that includes feed portion (9), ejection of compact portion (10) and is located a plurality of drying sections between feed portion (9) and ejection of compact portion (10), a plurality of drying sections are connected through the series system for dry the material segmentation of different humidity and granularity, the inside bottom surface of drying chamber of a plurality of drying sections is equipped with orifice plate (7), in the different drying sections orifice plate (7) have different pore structures, and the material can move through behind each drying section warp ejection of compact portion (10), the drying section includes hot-air inlet and tail gas discharge port, one section or the exhaust tail gas of multistage in the drying section can cyclic utilization after handling.

2. The fluidized bed dryer as claimed in claim 1, wherein the drying section comprises a first drying section (1), a second drying section (2), a third drying section (3) and a fourth drying section (4) which are connected in series in sequence, one end of the first drying section (1) is provided with the feeding part (9), and one end of the fourth drying section (4) is provided with the discharging part (10).

3. The ebullated bed dryer according to claim 2, wherein the hot air inlets of the first drying section (1), the second drying section (2), the third drying section (3) and the fourth drying section (4) are all connected with a dust removing device.

4. a fluidized bed dryer as claimed in claim 3, wherein the hot air inlets of said first drying section (1) and said second drying section (2) are connected with a wet air dust removing device (5), and the hot air inlets of said third drying section (3) and said fourth drying section (4) are connected with a dry air dust removing device (6).

5. An ebullated bed dryer according to claim 4, characterized in that the exhaust gas discharged from the exhaust gas discharge port of the first drying section (1) and/or the second drying section (2) is introduced into the dry air dust removing device (6), and the exhaust gas discharged from the exhaust gas discharge port of the third drying section (3) and/or the fourth drying section (4) is introduced into the wet air dust removing device (5).

6. The ebullated bed dryer according to claim 4 or 5, characterized in that the wet air dust collector (5) and the dry air dust collector (6) are connected to a high pressure fan (12), respectively.

7. The ebullated bed dryer of claim 6, wherein: the wet air dust removal device (5) and the dry air dust removal device (6) are both provided with air volume adjusting valves.

8. A fluidized bed dryer according to claim 2, characterized in that the angle adjusting part (8) is arranged above the perforated plate (7) of the inner bottom surface of the drying chamber of the first drying section (1) and in the immediate vicinity of the feeding part (9).

9. The ebullated bed dryer of claim 1 wherein the different aperture configurations are different cross-sectional areas and/or heights and/or angles.