阅读说明：本技术 聚合物粉末脱气仓 (Polymer powder degassing bin ) 是由 张万尧 秦云龙 安亚中 郭雨 邱永宁 马天鑫 曹善甫 安丙峰 胡一文 马建强 于 2020-06-29 设计创作，主要内容包括：本发明公开了一种聚合物粉末脱气仓,该聚合物粉末脱气仓包括脱气容器和搅拌系统,脱气容器包括料仓筒体、与料仓筒体底部连通的锥形封头段、设于料仓筒体顶部的出气口与进料口、设于锥形封头段顶部的进气口以及设于锥形封头段底部的出料口；搅拌系统包括设于料仓筒体顶部的减速机、设于脱气容器内部且顶部与减速机连接的搅拌轴、设于搅拌轴上的搅拌叶片以及设于搅拌轴底部的拨料器。通过料仓筒体以及锥形封头段的特殊结构提升了氮气分布的均匀性及脱气效率。使用本发明的聚合物粉末脱气仓具有处理量大、分离效率高、运行稳定、对物料适应性强等优点。(The invention discloses a polymer powder degassing bin which comprises a degassing container and a stirring system, wherein the degassing container comprises a bin cylinder, a conical head sealing section, a gas outlet and a feed inlet, a gas inlet and a discharge outlet, the conical head sealing section is communicated with the bottom of the bin cylinder, the gas outlet and the feed inlet are arranged at the top of the bin cylinder, the gas inlet is arranged at the top of the conical head sealing section, and the discharge outlet is arranged at the bottom of the conical head sealing section; the stirring system comprises a speed reducer arranged at the top of the bin cylinder, a stirring shaft arranged in the degassing container and connected with the speed reducer at the top, stirring blades arranged on the stirring shaft and a kick-out device arranged at the bottom of the stirring shaft. The uniformity of nitrogen distribution and degassing efficiency are improved through the special structures of the bin cylinder and the conical head sealing section. The polymer powder degassing bin has the advantages of large treatment capacity, high separation efficiency, stable operation, strong adaptability to materials and the like.)

1. A polymer powder degassing bin, comprising:

the degassing container comprises a storage bin cylinder, a conical head sealing section communicated with the bottom of the storage bin cylinder, an air outlet and an air inlet which are arranged at the top of the storage bin cylinder, an air inlet which is arranged at the top of the conical head sealing section and a discharge hole which is arranged at the bottom of the conical head sealing section; and

the stirring system comprises a speed reducer arranged at the top of the bin cylinder, a stirring shaft arranged in the degassing container and connected with the speed reducer at the top, stirring blades arranged on the stirring shaft and a kick-out device arranged at the bottom of the stirring shaft.

2. The polymer powder degassing silo according to claim 1, wherein the degassing container is sealed from the stirring system by a sealing system.

3. The polymer powder degassing bin of claim 1, wherein a coupling is further arranged between the speed reducer and the stirring shaft.

4. The polymer powder degassing silo according to claim 1, wherein the number of stirring blades is greater than or equal to 1.

5. The polymer powder degassing bin of claim 4, wherein the number of stirring blades is greater than 1 and is uniformly distributed along the stirring shaft.

6. The polymer powder degassing bin of claim 1, wherein a temperature measuring port is further disposed on one side of the bin cylinder.

7. The polymer powder degassing bin of claim 1, wherein a pressure measuring port is further provided at one side of the bin cylinder.

8. The polymer powder degassing bin of claim 1 wherein a detection port is further provided on one side of said conical seal section.

9. The polymer powder degassing bin of claim 1 wherein a sampling port is further provided on one side of said conical seal section.

10. The polymer powder degassing bin of claim 1, wherein the bin cylinder is further provided with a lifting lug, a manhole and a support lug.

11. The polymer powder degassing bin of claim 1, wherein the gas introduced by the gas inlet is nitrogen.

Technical Field

The invention relates to a polymer powder degassing bin, in particular to a polypropylene powder degassing bin.

Background

Polypropylene is a polymer obtained by addition polymerization of propylene. The polypropylene is widely applied to the production of fiber products such as clothes, blankets and the like, medical instruments, automobiles, bicycles, parts, conveying pipelines, chemical containers, food packages, medicine packages and the like.

The world process for producing polypropylene is divided into the following major categories: solvent processes, solution processes, liquid bulk processes (including liquid phase and gas phase combination) and gas phase processes.

The Novolen process is developed successfully by BASF company and belongs to one of gas phase processes, and adopts a vertical reactor with double helical ribbon stirring, propylene in the reactor is polymerized under the action of a catalyst to generate polypropylene powder, and then the polypropylene powder is discharged from a degassing bin, and then the product is obtained through extrusion and particle homogenization. Compared with the liquid-phase bulk method, the Novolen process has the characteristics of less investment, short flow, wide product range and the like, and is suitable for producing the impact copolymer.

With the increase of the demand of polypropylene and the improvement of the comprehensive economic requirement, the scale of a polypropylene reaction device is larger and larger, and the requirement on process equipment is higher and higher, so that the requirement on efficiency of the equipment is higher and higher, and the traditional degassing bin equipment cannot meet the requirement on the treatment capacity of the current large-scale device.

Disclosure of Invention

In order to solve the problems, the invention provides a polymer powder degassing bin which can meet the existing requirements.

In order to achieve the purpose, the invention provides a polymer powder degassing bin which consists of a degassing container and a stirring system. The degassing container comprises a storage bin barrel, a conical head sealing section communicated with the bottom of the storage bin barrel, a gas outlet and a feed inlet which are arranged at the top of the storage bin barrel, a gas inlet which is arranged at the top of the conical head sealing section and a discharge outlet which is arranged at the bottom of the conical head sealing section. The stirring system comprises a speed reducer arranged at the top of a bin cylinder, a stirring shaft arranged in a degassing container and connected with the speed reducer at the top, stirring blades arranged on the stirring shaft and a kick-out device arranged at the bottom of the stirring shaft.

In one embodiment, the degassing vessel is sealed from the agitation system by a sealing system.

In one embodiment, a coupling is further arranged between the speed reducer and the stirring shaft.

In one embodiment, the number of stirring vanes is 1 or more.

In one embodiment, the number of the stirring blades is more than 1, and the stirring blades are uniformly distributed along the stirring shaft.

In one embodiment, one side of the storage bin cylinder is also provided with a temperature measuring port.

In one embodiment, one side of the storage bin cylinder is also provided with a pressure measuring port.

In one embodiment, a detection port is further formed on one side of the conical head sealing section.

In one embodiment, a sampling port is further arranged on one side of the conical head sealing section.

In one embodiment, the storage bin cylinder is further provided with a lifting lug, a manhole and a support lug.

In one embodiment, the gas introduced by the gas inlet is nitrogen.

Compared with the prior art, the invention has the following advantages:

1. the invention relates to powder degassing equipment, which can meet the process requirements for degassing polypropylene powder and has the characteristics of high separation efficiency, stable operation, strong adaptability to materials and the like.

2. The degassing container is divided into two parts, and the special structures of the bin cylinder and the conical head sealing section improve the uniformity of nitrogen distribution and degassing efficiency.

3. The invention is also provided with stirring blades which are evenly distributed on the stirring shaft from top to bottom in sequence, and polymer powder materials are stirred by the stirring blades, so that the degassing efficiency is improved.

4. The invention is also provided with a detection port and a sampling port, and can sample and detect the discharge position of the equipment according to the working condition requirement.

5. The bottom of the conical sealing head section is provided with the kick-out device, so that polymer powder materials can be effectively discharged.

6. Compared with the prior art, the processing capacity of the polymer powder degassing bin is more than 30 ten thousand tons per year, the processing capacity is large, the adaptability to materials is strong, the processing is not limited to polypropylene powder processing, the polymer powder degassing bin can be used for degassing and discharging other materials containing gas, and the advantages of good energy saving performance, high safety and the like are achieved.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a polymer powder degassing bin according to the present invention.

Wherein, the reference numbers:

mixing system 1

Degassing vessel 2

Air outlet 3

Lifting lug 4

Manhole 5

Support ear 6

Air inlet 7

Storage bin cylinder 8

Conical head section 9

Detection port 10

Discharge port 11

Kick-out device 12

Sampling port 13

Temperature measuring port 14

Pressure measuring port 15

Mixing blade 16

Stirring shaft 17

Coupling 18

Sealing system 19

Feed inlet 20

Speed reducer 21

Detailed Description

For a better understanding of the present invention, reference will now be made to the accompanying drawings. The following examples are carried out on the premise of the technical solution of the present invention, and detailed embodiments and procedures are given, but the scope of the present invention is not limited to the following.

As shown in fig. 1, which is a schematic structural diagram of an embodiment of the polymer powder degassing bin of the present invention, the polymer powder degassing bin of the present invention includes a stirring system 1 and a degassing container 2, and the degassing container 2 is sealed with the stirring system 1 by a sealing system 19.

Continuing to refer to fig. 1, degassing vessel 2 includes a silo cylinder 8 and a conical head section 9. The top of the storage bin cylinder body 8 is provided with an air outlet 3 and a feeding hole 20. Two lifting lugs 4 are arranged at corresponding positions on two sides of the storage bin cylinder 8, and the polymer powder degassing bin can be hung in different use places according to use requirements through the lifting lugs 4. In addition, a support lug 6 and a manhole 5 which is convenient for personnel to enter and exit are arranged on one side of the storage bin cylinder body 8 so as to facilitate the installation, the overhaul and the safety inspection of the polymer powder degassing bin, and the shape and the structure of the manhole 5 are not particularly limited as long as the use requirements of users are met.

The outside of the storage bin cylinder body 8 can be also provided with a temperature measuring port 14 and a pressure measuring port 15 for measuring the temperature and the pressure in the storage bin cylinder body 8 so as to conveniently adjust the temperature and the pressure in the degassing process.

The conical head sealing section 9 is communicated with the bottom of the bin cylinder body 8 and partially coincides with the bottom of the bin cylinder body 8, an air inlet 7 is arranged at the coincidence position of the bin cylinder body 8 and the conical head sealing section 9, and preferably, the inlet gas of the air inlet 7 is nitrogen. As shown in fig. 1, the structure formed by the silo cylinder 8, the conical head section 9 and the gas inlet 7 can ensure that the nitrogen is uniformly distributed in the silo cylinder 8, thereby improving the degassing efficiency.

Preferably, the conical head sealing section 9 is also provided with a detection port 10 and a sampling port 13 on one side, so that the discharge of the equipment can be sampled and detected according to the working condition requirement, and the normal operation of the equipment is ensured.

The bottom of the conical head sealing section 9 is also provided with a discharge port 11 for discharging the degassed qualified polymer powder.

The stirring system 1 comprises a speed reducer 21 arranged at the top of the bin cylinder 8 and a stirring shaft 17 arranged inside the degassing container 2, and the top of the stirring shaft 17 is connected with the speed reducer 21 through a coupler 18. The stirring shaft 17 is provided with stirring blades 16, the number of the stirring blades is greater than or equal to 1, in the embodiment shown in fig. 1, the number of the stirring blades 16 is 8, and the stirring blades are uniformly distributed along the stirring shaft 17, but in other embodiments, the number of the stirring blades 16 may be other, such as 2, 3, 4, 5, 6, 7, 9, 10, and the like, and the invention is not limited thereto.

Stirring shaft 17 bottom is equipped with setting gauge 12, and setting gauge 12 is close to in discharge gate 11, and setting gauge 12 can prevent that polymer powder material from putting things in a bridge in discharge gate 11 department to guarantee the smooth discharge of polymer powder material.

During the use, polymer powder material gets into feed bin barrel 8 by feed inlet 20, down falls under the action of gravity, and the nitrogen gas of heating gets into toper sealing section 9 from air inlet 7, and nitrogen gas gets into feed bin barrel 8 after upwards moving from toper sealing section 9 via toper sealing section 9 by the intercommunication mouth of feed bin barrel 8, and feed bin barrel 8 and the structure that toper sealing section 9 formed can guarantee nitrogen gas evenly distributed in feed bin barrel 8. Speed reducer 21 and shaft coupling 18 drive (mixing) shaft 17 and stirring vane 16 and rotate, and stirring vane 16's rotation can improve the area of contact of polymer powder material and nitrogen gas to promote the degasification efficiency of polymer powder material. The nitrogen carries the gas to be removed and is discharged from a gas outlet 3 at the top of the device. Qualified polymer powder generated after the polymer powder material is subjected to gas removal is discharged from a discharge port 11 at the bottom of the polymer powder degassing bin and enters a subsequent process flow.

In conclusion, the polymer powder degassing bin has the following advantages:

1. the invention relates to powder degassing equipment, which can meet the process requirements for degassing polypropylene powder and has the characteristics of high separation efficiency, stable operation, strong adaptability to materials and the like.

2. The degassing container is divided into two parts, and the special structures of the bin cylinder and the conical head sealing section improve the uniformity of nitrogen distribution and degassing efficiency.

3. The invention is also provided with stirring blades which are evenly distributed on the stirring shaft from top to bottom in sequence, and polymer powder materials are stirred by the stirring blades, so that the degassing efficiency is improved.

4. The invention is also provided with a detection port and a sampling port, and can sample and detect the discharge position of the equipment according to the working condition requirement.

5. The bottom of the conical sealing head section is provided with the kick-out device, so that polymer powder materials can be effectively discharged.

6. Compared with the prior art, the processing capacity of the polymer powder degassing bin is more than 30 ten thousand tons per year, the processing capacity is large, the adaptability to materials is strong, the processing is not limited to polypropylene powder processing, the polymer powder degassing bin can be used for degassing and discharging other materials containing gas, and the advantages of good energy saving performance, high safety and the like are achieved.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention as defined by the appended claims be interpreted in accordance with the breadth to which they are fairly, if not explicitly recited herein.