CN219037512U

CN219037512U - A air current formula material drying device for cellulose ether production

Info

Publication number: CN219037512U
Application number: CN202223366985.9U
Authority: CN
Inventors: 赵丹; 庞亮; 崔立永
Original assignee: Shijiazhuang Wuxing Machinery Co ltd
Current assignee: Shijiazhuang Wuxing Machinery Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-05-16
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to an airflow type material drying device for cellulose ether production, and belongs to the technical field of chemical production equipment. Comprises a hot blast stove, a throwing scattering machine, a drying tower, a cyclone separator, a pulse bag type dust collection device and a draught fan which are sequentially communicated, and are communicated with each other by using an air pipe; the throwing scattering machine is positioned below the drying tower and is communicated with an air pipe at the discharge end of the hot blast stove; the lower end of the cyclone separator is provided with an air-off discharger for discharging; a spiral discharging conveyor is arranged below the pulse bag type dust collection device. The utility model uses air flow to wrap and clamp powder material to move, adopts gas-solid two-phase parallel flow operation, and has high heat efficiency, short drying time and large treatment capacity. The drying device provided by the utility model has a sealing structure on the whole, and is good in sealing performance, free from dust pollution and good in environmental protection performance.

Description

A air current formula material drying device for cellulose ether production

Technical Field

The utility model relates to an airflow type material drying device for cellulose ether production, and belongs to the technical field of chemical production equipment.

Background

Cellulose ether is a widely used polymer compound, and in the process of producing cellulose ether, one of the processes is to dry a material. Since cellulose ether is in powder form after formation, it is usually transported by being entrained by an air stream during transport. The product is dried by the air flow into the drying device.

At present, the used drying device is simpler, and can basically meet the drying requirement, but the problems of low drying efficiency, unstable overall working performance and dust pollution exist.

Disclosure of Invention

The utility model aims to provide an airflow type material drying device for cellulose ether production, which is used for improving the efficiency of drying materials and improving the environmental protection.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an airflow type material drying device for cellulose ether production comprises a hot blast stove, a throwing scattering machine, a drying tower, a cyclone separator, a pulse bag type dust collection device and a draught fan which are sequentially communicated, and are communicated with each other by using an air pipe; the throwing scattering machine is positioned below the drying tower and is communicated with an air pipe at the discharge end of the hot blast stove; the lower end of the cyclone separator is provided with an air-off discharger for discharging; a spiral discharging conveyor is arranged below the pulse bag type dust collection device.

The further improvement is that the drying tower comprises a main drying tower and an auxiliary drying tower, a throwing and scattering machine is arranged below the main drying tower, and the air outlet end of the main drying tower is communicated with the air inlet end of the auxiliary drying tower.

The throwing scattering machine comprises a sealing shell and a throwing piece spindle arranged in the sealing shell, wherein a plurality of throwing pieces are arranged on the surface of the throwing piece spindle, and the throwing piece spindle is driven to rotate by a motor.

The further improvement is that the induced draft fan is also communicated with the chimney.

The further improvement is that the hot blast stove is a gas hot blast stove.

By adopting the technical scheme, the utility model has the following technical effects:

the utility model uses air flow to wrap and clamp powder material to move, adopts gas-solid two-phase parallel flow operation, and has high heat efficiency, short drying time and large treatment capacity.

The hot air furnace is arranged to provide dry hot air, so that the materials are dried by using a high-temperature hot air medium, the dry hot air can be fully contacted with powdery materials, and the hot air drying device has the characteristics of large contact area, high drying efficiency and good drying effect.

The drying device has simple and compact structure and high production capacity, and in the whole drying system, other rotating parts are not needed except the induced draft fan and the throwing scattering machine, so that the equipment maintenance cost is low.

The drying device provided by the utility model has a sealing structure on the whole, and is good in sealing performance, free from dust pollution and good in environmental protection performance.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic front view of the throwing scattering machine of the utility model;

FIG. 3 is a schematic view of a cyclone separator of the present utility model;

FIG. 4 is a schematic view of a pulse bag dust collector apparatus of the present utility model;

FIG. 5 is a schematic side view of the throwing scattering machine of the present utility model;

wherein, 1, hot blast stove, 2, throwing material scattering machine, 21, sealing shell, 22, throwing piece main shaft, 23, throwing piece, 3, main drying tower, 4, auxiliary drying tower, and 5, a pulse bag type dust collection device, 6, an induced draft fan, 7, a chimney, 8, a spiral discharging conveyor, 9, an air pipe, 10, an air closing discharger, 11 and a cyclone separator.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

The utility model relates to an airflow type material drying device for cellulose ether production, which is mainly applied to the production of cellulose ether and is used for drying materials.

As shown in fig. 1, 2, 3, 4 and 5, the drying device comprises a hot blast stove 1, a throwing scattering machine 2, a drying tower, a cyclone separator 11, a pulse bag type dust collection device 5 and a draught fan 6 which are sequentially communicated, wherein the components are communicated by using an air pipe 9. The draught fan 6 is arranged at the tail end of the whole device, the draught fan 6 is a negative pressure draught fan, and after the draught fan 6 is started, negative pressure is formed in the whole device, so that airflow flows.

The hot air stove 1 heats the air to change the air into dry hot air, thereby providing the dry hot air to the drying device. The dry hot air first enters the throw-off machine 2. The stove 1 is typically provided as a gas stove and natural gas may be used as fuel.

The drying device is provided with a throwing and scattering machine 2 for scattering bulk materials. The materials to be dried are input into the material throwing and scattering machine 2, and meanwhile, due to the action of the induced draft fan 6, the dry hot air in the hot blast stove 1 enters the material throwing and scattering machine 2.

As shown in fig. 1, the material throwing and scattering machine 2 is arranged below the drying tower, the material throwing and scattering machine 2 is provided with two air openings, one air opening is communicated with an air pipe 9 at the discharge end of the hot blast stove, and the other air opening is communicated with the drying tower. Sufficient space is provided in the drying tower, so that the dried hot air is fully combined with the materials, and the materials are dried by the dried hot air. In general, there may be provided a plurality of drying towers, namely, a main drying tower 3 and a sub drying tower 4. The material is firstly sent to a main drying tower 3, and a throwing and scattering machine 2 is arranged below the main drying tower 3.

According to the flowing direction of the air flow, the air outlet end of the auxiliary drying tower 4 is communicated with the air inlet end of the cyclone separator 11, and the air flow wrapped with the materials enters the cyclone separator 11 to realize the separation of the materials from the air. The material falls to the lower part after separation, and is discharged from the hopper 10 according to the air cut at the lower end of the cyclone 11. After solid-gas separation by the cyclone separator 11, since fine powder which is not separated may still exist, the pulse bag type dust collection device 5 is arranged at the outlet end of the cyclone separator 11 in a communicated manner, and after the air flow is further purified by the pulse bag type dust collection device 5, the air flow can be discharged into the atmosphere. A chimney 7 can be arranged, so that the air outlet end of the induced draft fan 6 is communicated with the chimney 7, and air flow is discharged into the higher air through the chimney 7.

The pulse bag type dust collection device 5 is used for collecting powder materials, the materials are accumulated at the lower part of the inside of the pulse bag type dust collection device 5, and for this purpose, a spiral discharging conveyor 8 is arranged below the pulse bag type dust collection device 5 and is used for outputting the accumulated materials.

The drying tower comprises a main drying tower 3 and an auxiliary drying tower 4, a throwing and scattering machine 2 is arranged below the main drying tower 3, and the air outlet end of the main drying tower 3 is communicated with the air inlet end of the auxiliary drying tower 4. The main drying tower 3 and the auxiliary drying tower 4 are matched for use, so that the drying effect is improved, and the materials are fully dried.

The device is provided with a throwing and scattering machine 2 for beating and scattering bulk and bulk materials, and the scattered materials are thrown in the air. As shown in fig. 2 and 5, the material throwing and scattering machine 2 comprises a sealing shell 21 and a throwing piece main shaft 22 arranged in the sealing shell 21, wherein two ends of the throwing piece main shaft 22 are hinged and connected through the side wall of the sealing shell 21, a plurality of throwing pieces 23 are arranged on the surface of the throwing piece main shaft 22, and the throwing pieces 23 are used for beating and throwing materials. The swing main shaft 22 is driven to rotate by a motor, a belt pulley is arranged after one end of the swing main shaft 22 extends out of the sealing shell 21, and a transmission belt is arranged between the motor and the belt pulley. The motor ensures that the fling spindle 22 is driven to rotate at a high speed. An air inlet and an air outlet are arranged on the sealing shell 21, the air inlet is communicated with the hot blast stove 1 through an air pipe 9, and the air outlet is communicated with the main drying tower 3. The sealing shell 21 is also provided with a charging opening which can be sealed and closed after charging.

When the utility model is used, after the induced draft fan 6 runs, the whole system forms negative pressure, so that the pressure difference is formed between the inside and the outside of the pipeline; the materials are conveyed to the throwing scattering machine 2, partial bulk materials are contacted with hot air and are scattered by the throwing scattering machine 2, and then are sucked into the main drying tower 3 and the auxiliary drying tower 4 in sequence by utilizing the rapid motion of heat-carrying air to drive wet materials to suspend in the hot air, so that the materials subjected to air flow drying can be almost completely removed by non-combined moisture, and the dried materials cannot be degenerated. Then, the dried material is entrained by the air flow and enters the cyclone separator 11, the material is separated from the air, the separated material is discharged from the air-closing discharger 10 at the bottom of the cyclone separator 11, and the fine dust which is not separated enters the pulse bag type dust collection device 5 along with the air flow to be purified, and the purified air is discharged into the atmosphere.

In the utility model, the pulse bag type dust collection device 5, the spiral discharging conveyor 8, the air closing discharger 10 and the cyclone separator 11 are all applications of the components in the prior art. The spiral discharging conveyor 8 is a spiral auger conveyor.

The drying device adopts gas-solid two-phase parallel flow operation, has high heat efficiency, short drying time and large treatment capacity, can use high-temperature heat medium for drying, and the higher the moisture content of the material is, the higher the temperature of the drying medium can be.

The device has simple and compact structure and high production capacity, and in the whole drying system, other rotating parts except the induced draft fan and the throwing scattering machine are not needed, so that the equipment maintenance cost is low. The device has good sealing performance, no dust pollution and good environmental protection performance.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be appreciated by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which have been described in the foregoing and description merely illustrative of the principles of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A air current formula material drying device for cellulose ether production, its characterized in that: comprises a hot blast stove (1), a throwing scattering machine (2), a drying tower, a cyclone separator (11), a pulse bag type dust collection device (5) and a draught fan (6) which are sequentially communicated, and are communicated with each other by an air pipe (9); the throwing scattering machine (2) is positioned below the drying tower and is communicated with an air pipe (9) at the discharge end of the hot blast stove; the lower end of the cyclone separator (11) is provided with an air-off discharger (10) for discharging; a spiral discharging conveyor (8) is arranged below the pulse bag type dust collection device (5).

2. An air-flow type material drying device for cellulose ether production according to claim 1, characterized in that: the drying tower comprises a main drying tower (3) and an auxiliary drying tower (4), a throwing and scattering machine (2) is arranged below the main drying tower (3), and the air outlet end of the main drying tower (3) is communicated with the air inlet end of the auxiliary drying tower (4).

3. An air-flow type material drying device for cellulose ether production according to claim 1, characterized in that: the throwing scattering machine (2) comprises a sealing shell (21) and a throwing piece main shaft (22) arranged in the sealing shell (21), wherein a plurality of throwing pieces (23) are arranged on the surface of the throwing piece main shaft (22), and the throwing piece main shaft (22) is driven to rotate by a motor.

4. A pneumatic material drying apparatus for the production of cellulose ethers according to any one of claims 1 to 3, wherein: the induced draft fan (6) is also communicated with the chimney (7).

5. A pneumatic material drying apparatus for the production of cellulose ethers according to any one of claims 1 to 3, wherein: the hot blast stove (1) is a gas hot blast stove.