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System and method for preventing powder conveying pipeline from being blocked

A powder conveying and conveying pipeline technology, applied in the field of powder conveying and maintenance, can solve problems such as blockage of powder conveying pipeline system, and achieve the effect of reducing the frequency of blockage

Pending Publication Date: 2021-12-31
ZHENGZHOU ZHONGYUAN DEFENSE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the object of the present invention is to provide a system and anti-clogging method for preventing the clogging of powder conveying pipelines, which are used to reduce the generation of static electricity and reduce the accumulation of static electricity, so that the powder conveying pipeline system can be transported smoothly, fundamentally Solve the problem of blockage of powder conveying pipeline system

Method used

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  • System and method for preventing powder conveying pipeline from being blocked
  • System and method for preventing powder conveying pipeline from being blocked

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Such as figure 1 As shown, the powdered antistatic agent stearylamine polyoxyethylene ether and the powder to be transported are metered and added to the mixing chamber through the rotary valves (not shown) of the respective silos (not shown). In the silo 1, wherein, the addition amount of stearylamine polyoxyethylene ether is 5wt% of the addition amount of the powder to be conveyed, and the air flow mixes the first fan 5 continuously to the mixing silo 1 through the conveying pipeline and the mixing silo valve 2 Conveying gas for airflow mixing, wherein the gas delivered by the first fan 5 to the mixing silo 1 is high-pressure nitrogen. During the airflow mixing process, the powder in the mixing silo 1 is in a boiling state. After mixing for 30 minutes, an antistatic agent is obtained. Evenly dispersed mixed material, the mixed material is transported to the storage bin 3 through the screw 6, and the nitrogen gas delivered by the first fan 5 is mixed with the air flow ...

Embodiment 2

[0067] Such as figure 2 As shown, powdered antistatic agent sodium dodecylbenzene sulfonate and solvent-containing ultra-high molecular weight polyethylene wet powder are metered into the airflow dryer 16 respectively, wherein the antistatic agent dodecylbenzene The sodium sulfonate addition is 2wt% of the addition of solvent-containing ultra-high molecular weight polyethylene wet powder (the powder amount here is calculated by the product of solvent-containing ultra-high molecular weight polyethylene wet powder amount and wet powder solid content) . The mixture of the two was mixed and dried in an airflow dryer 16 at 60° C. for 2 hours to completely remove the solvent in the UHMWPE wet powder. After cooling down to room temperature, the mixture powder is transported to the mixing bin 1 by high-pressure gas through the pipeline, and then, the same steps as in Example 1 are used to carry out the powder transport, and finally the powder added with the antistatic agent is trans...

Embodiment 3

[0069] The powdered antistatic agent pentaerythritol tetrastearate is metered into the slurry storage tank (not shown in the figure) of the ultra-high molecular weight polyethylene slurry or suspension after polymerization, wherein the antistatic agent pentaerythritol tetrastearate The addition of stearate is the 3.5wt% of ultra-high molecular weight polyethylene powder amount (the ultra-high molecular weight polyethylene powder amount here, by ultra-high molecular weight polyethylene slurry amount and ultra-high molecular weight polyethylene slurry solid content Calculated by the product of), the two were mechanically stirred in the slurry storage tank for 30 minutes, so that the antistatic agent pentaerythritol tetrastearate and the polymerized ultra-high molecular weight polyethylene slurry or suspension were fully mixed to obtain antistatic A mixture slurry in which the antistatic agent is uniformly dispersed, and the solvent in the mixture slurry is separated through a sep...

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Abstract

The invention provides a system for preventing a powder conveying pipeline from being blocked and a method for preventing blockage. The system is characterized in that a mixing bin containing an antistatic agent is arranged at the upstream of the powder pipeline conveying system, so that to-be-conveyed powder and the antistatic agent are mixed in the mixing bin and then enter the powder pipeline conveying system. Therefore, static electricity generated by friction among the powder, between the powder and the conveying gas and between the powder and the conveying pipeline in the conveying process can be remarkably reduced, particularly static electricity accumulation of the conveying pipeline in the conveying system at the flange connecting position and the steering bent pipe position is reduced, and therefore the frequency of blocking of the conveying pipeline in the conveying system is reduced.

Description

technical field [0001] The invention belongs to the technical field of powder conveying and maintenance, and in particular relates to a system and method for preventing blockage of powder conveying pipelines. Background technique [0002] In the process of conveying powder by the pneumatic conveying system, static electricity is unavoidable due to friction between powder, between powder and conveying gas, between powder and conveying pipeline, etc. Since the conveying pipeline is often long, there are inevitably multiple flange connections, and there is a certain difference between the flange connection and the internal environment of the conveying pipeline, which is easy to cause static electricity to accumulate; in addition, due to the need for steering, there are multiple The part of the elbow that plays a steering role, such as the elbow that converts from the horizontal direction to the vertical direction, and the elbow that converts between different horizontal directi...

Claims

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Application Information

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IPC IPC(8): B65G53/36B65G53/50B65G53/46B65G53/58
CPCB65G53/36B65G53/50B65G53/46B65G53/58B65G2201/04
Inventor 马玉倩马军营王旗王元盛
Owner ZHENGZHOU ZHONGYUAN DEFENSE MATERIAL
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