Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of separation system and separation method of polyolefin catalyst mother liquor

A polyolefin catalyst and separation method technology, applied in the purification/separation of hydrocarbons, chemical instruments and methods, distillation purification/separation, etc., can solve problems such as tower blockage, achieve tower blockage, low energy consumption, and high separation efficiency Effect

Active Publication Date: 2017-09-29
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low recovery rate of titanium tetrachloride and high energy consumption of the system in the prior art, the present invention provides a separation system and separation method of polyolefin catalyst mother liquor. The crystallization of high boilers is frozen and centrifuged, and then enters the rectification tower system, which solves the problems of tower plugging and long-term operation. At the same time, the combination of process flow and heat exchange network is used to reduce the energy consumption of the device, and finally obtain high-purity hydrocarbons Solvent and high-purity titanium tetrachloride

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of separation system and separation method of polyolefin catalyst mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as figure 1 Shown, a kind of polyolefin catalyst mother liquid separation system.

[0063] Including: the first fractionation tower C1, the second fractionation tower C2, the third fractionation tower C3, the first fractionation tower condenser E1, the feed heat exchanger E2 and the second fractionation tower condenser E3; before the first fractionation tower C1 Equipped with refrigeration equipment F1 and solid-liquid separation equipment M1;

[0064] The refrigeration equipment F1 is connected to the solid-liquid separation equipment M1, the first fractionation tower condenser E1, and the feed heat exchanger E2 in sequence, and then connected to the first fractionation tower C1; the top outlet pipeline of the first fractionation tower C1 is connected to the first fractionation tower condenser E1 The pipeline is divided into two branches, one is connected to the upper part of the first fractionating tower C1, and the other is connected to the second fractionating...

Embodiment 2

[0077] The system and method are the same as in Embodiment 1.

[0078] A kind of mother liquor feed rate of polyolefin catalyst is 1000kg / h, and wherein the content of titanium tetrachloride is 80% (weight), and the content of hexane is 15%, and the content of high boilers such as chlorinated hydrocarbyl titanium, fat is 5%, first enter the freezer at a low temperature of -20°C to freeze and solidify most of the high boilers, the operating pressure of the freezer is 110KPa, and then enter the centrifuge for separation. The weight of the centrifuged solid residue is 52.94kg / h. content is 85%, the titanium tetrachloride content in the solid slag is 12%, and the hexane content is 3%, and the weight of the mother liquor after centrifugation is 947.06kg / h, and the titanium tetrachloride content in the mother liquor is 83.8%. The alkane content is 15.67%, and the high boiler content is 0.53%. After the gas-phase heat exchange between the heat exchanger E1 and the top of the C1 tower...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a separation system and separation method of polyolefin catalyst mother liquid. The system includes: a refrigeration device and a solid-liquid separation device are arranged in front of the first fractionation tower. The method comprises: before the mother liquid enters the rectification tower for separation, first freezes the crystallization of high boilers and centrifuges, and then enters the rectification tower system. The problem of tower blockage and long-term operation is solved, and the combination of process flow and heat exchange network is used to reduce the energy consumption of the device, and finally obtain high-purity hydrocarbon solvent and high-purity titanium tetrachloride.

Description

technical field [0001] The invention relates to the field of preparation of polyolefin catalysts, in particular to a separation system and method for polyolefin catalyst mother liquor. The method involves separating hydrocarbon-containing solvents, titanium tetrachloride and high boilers produced during the preparation of polyolefin catalysts, and finally obtaining high-purity hydrocarbon solvents and high-purity titanium tetrachloride. Background technique [0002] Generally, the preparation of polyolefin catalyst is to use liquid phase titanium tetrachloride and solid carrier or catalyst containing magnesium compound to mix and contact for a certain period of time to obtain a highly active Ziegler-Natta catalyst component, and then the obtained solid catalyst The components are washed with a hydrocarbon solvent to remove unloaded titanium tetrachloride, the catalyst slurry is discharged from the reactor, and liquid phase materials such as hydrocarbon solvent, titanium tetr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/00C07C7/04C01G23/02
Inventor 罗继红周继东刘莹单薇李守振
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com