A kind of oxidized polyethylene separation tower and separation method thereof

A technology for oxidizing polyethylene and separation methods, which is applied in separation methods, chemical instruments and methods, filtration and separation, etc., and can solve the problems of difficulty, separation, and difficulty in waxy semi-solids and waxy solids
CN109999538BActive Publication Date: 2020-09-04NANJING YANGZI FINE CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING YANGZI FINE CHEM
Publication Date
2020-09-04

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Abstract

The invention discloses an oxidized polyethylene separation tower. The oxidized polyethylene separation tower comprises a base, wherein a solid-liquid separation mechanism and a liquid-liquid separation mechanism are mounted on the upper end surface of the base and are communicated through a connecting pipe; a feeding pipe is communicated with the solid-liquid separation mechanism; a light liquiddischarging pipe and a heavy liquid discharging pipe are communicated with the liquid-liquid separation mechanism; a drive mechanism and a transmission mechanism are mounted at the upper end of the liquid-liquid separation mechanism. The invention further discloses an oxidized polyethylene separation method. The method comprises following steps: S1, filtering; S2, screening; S3, solid-liquid separation; S4, liquid-liquid separation; S5, repeating of operation. The structure is ingenious, the solid-liquid separation mechanism and the liquid-liquid separation are combined, separation of smaller-particle waxy semi-solids and waxy solids and separation of white viscous oxidized polyethylene with different molecular weights are realized, separation speed of oxidized polyethylene is increased, and loss in a material transfer process is reduced.
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Description

technical field

[0001] The invention relates to the technical field of polymer separation, in particular to an oxidized polyethylene separation tower and a separation method thereof. Background technique

[0002] Oxidized polyethylene is also called polyethylene glycol. The chemical structural formula of the polymer is, which includes a series of products with low to medium molecular weight. Usually, in industrial production, ethylene oxide is slowly added to ethylene glycol or water. However, because of the vapor pressure, the maximum molecular weight of the pure polymer we obtain in actual production is tetraethylene glycol, and all the oxidized polyethylene products we usually obtain are mixtures of oxidized polyethylenes with different polymerization degrees According to the molecular weight of polymeric glycol, we usually divide its appearance into three types, the first is white viscous liquid, the molecular weight of this kind of oxidized polyethylene is usually betwe...

Claims

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