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PP (propylene) prepolymerization reactor

A prepolymerization and reaction kettle technology, which is applied in the field of propylene prepolymerization reaction kettles, can solve the problems of small heat exchange area and the like

Inactive Publication Date: 2016-03-30
BEIJING HUAFU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a propylene prepolymerization reactor to solve the technical problem of the small heat exchange area per unit volume of the propylene prepolymerization reactor in the prior art

Method used

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Embodiment Construction

[0042] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides a PP (propylene) prepolymerization reactor. The PP prepolymerization reactor comprises an upper seal head, a cylinder and a lower seal head which are sequentially connected from top to bottom, wherein a material inlet is formed in the upper seal head, and a material outlet is formed in the lower seal head; a cylinder and lower seal head jacket is arranged on the outer walls of the cylinder and the lower seal head, an upper seal head cooling device is arranged on the upper seal head, and a stirring device and an inner cooling device are arranged in the cylinder. On one hand, the cylinder and the lower seal head are cooled by the cylinder and the lower seal head jacket, on the other hand, the upper seal head is cooled by the upper seal head cooling device, meanwhile, the inside of the PP prepolymerization reactor is further cooled, the heat exchange area is sufficiently increased, the heat exchange efficiency is improved, the condition that the prepolymerization reaction rate is out of control due to overheating of the PP prepolymerization reactor is prevented, and homogeneity of products after reaction is guaranteed. By means of the stirring device, materials in the PP prepolymerization reactor are uniform, the safety of the PP prepolymerization reactor is improved, the scale of the PP prepolymerization reactor is enlarged, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a propylene prepolymerization reactor. Background technique [0002] Polypropylene (PP) plastic is a thermoplastic synthetic resin with excellent performance. It has a wide range of applications and has become one of the fastest growing products among the world's top five synthetic resins. There are four main production processes for polypropylene, namely solution method, solvent slurry method (referred to as slurry method), bulk method and gas phase method. In addition, a combination process of bulk method and gas phase method has been developed. The bulk polymerization process is further divided into two types: continuous polymerization process and batch polymerization process. According to different polymerization processes, some polymerization processes have a pre-polymerization stage in order to pre-activate the catalyst, that is, the catalyst is first pre-polyme...

Claims

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Application Information

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IPC IPC(8): B01J19/18C08F2/01
CPCB01J19/18B01J2219/00074C08F2/01
Inventor 陈红高煦李泽民杨淑霞
Owner BEIJING HUAFU ENG
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