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A process for eliminating static electricity of polyvinyl chloride powder

A technology for polyvinyl chloride powder and polyvinyl chloride powder, which is applied in the field of electrostatic elimination of polyvinyl chloride powder, can solve the problems of full bag dust, environmental impact, scattering, etc., and achieves small change range, environmental improvement, and reduction of transformation. cost effect

Active Publication Date: 2020-07-17
DEZHOU SHIHUA CHEM
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The resistivity of PVC powder is relatively high, and static electricity will be generated during air drying and powder transportation. The charged dust will have a great impact on PVC packaging. When the water content is controlled too low (≤0.1%), during the packaging It will cause difficulties in unloading the packaging machine, full bags and dust flying, which not only seriously affects the environment, but also leads to the phenomenon that the weighing does not meet the requirements

Method used

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  • A process for eliminating static electricity of polyvinyl chloride powder

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Embodiment

[0034] A process for eliminating static electricity of polyvinyl chloride powder, such as figure 1 As shown, the system used includes a vibrating screen, a feeder, a secondary conveying pipeline, and a packaging silo connected in sequence. The inlet pipeline of the vibrating screen is provided with a first humidification device, and the secondary conveying pipeline is provided with an atomization device. The inlet of the first humidifying device is connected to the first steam pipeline, the inlet of the atomizing device is connected to the second steam pipeline, and the spraying direction of the atomizing device is perpendicular to the flow direction of polyvinyl chloride.

[0035] The air-dried polyvinyl chloride powder from the upstream is humidified for the first time in the inlet pipe of the vibrating screen, then vibrating and sieving, and then fed to the secondary conveying pipeline, and the polyvinyl chloride powder in the secondary conveying pipeline undergoes the secon...

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Abstract

The invention discloses technology for eliminating static electricity of polyvinyl chloride powder. Polyvinyl chloride powder dried by air flows from the upstream is subjected to first humidificationin an inlet pipe opening of a vibrating screen and then screened vibrationally and discharged to a secondary conveying pipeline. The polyvinyl chloride powder in the secondary conveying pipeline is subjected to secondary humidification and enters a packing material bin to perform packing operation. With the technology, the environment of the packing site is improved. A packing machine smoothly discharge and has good weighing effect. Pocketfuls are avoided. The weighting requirement is met.

Description

technical field [0001] The invention relates to a conveying and packaging process of polyvinyl chloride (PVC), in particular to a process for eliminating static electricity of polyvinyl chloride powder. Background technique [0002] Polyvinyl chloride (English: PolyVinyl Chloride, referred to as: PVC) is a polymer material that uses a chlorine atom to replace a hydrogen atom in polyethylene. PVC is a white powder with an amorphous structure and a small degree of branching. The molecular weight of industrially produced PVC is generally in the range of 50,000 to 120,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature. There is no fixed melting point, it begins to soften at 80~85°C, becomes viscoelastic at 130°C, and becomes viscous fluid at 160~180°C. Its tensile strength is about 60MPa, and its impact strength is 5~10kJ / m 2 ; Excellent dielectric properties. [0003] The existing method for industrialize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65B63/00
CPCB65B63/00
Inventor 韩景康魏晓芸王秋云
Owner DEZHOU SHIHUA CHEM
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