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

Device and method for removing light components in styrene monomer

A styrene monomer, styrene technology, applied in distillation purification/separation, organic chemistry, climate sustainability, etc., can solve the problems of styrene polymerization, insufficient vacuum degree, etc. low consumption effect

Pending Publication Date: 2022-06-03
SINOPEC ENG +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The first object of the present invention is to provide a device for removing light components in styrene monomer, which solves technical problems such as styrene polymerization and insufficient vacuum in the styrene lightening rectification tower in the prior art

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
  • Device and method for removing light components in styrene monomer
  • Device and method for removing light components in styrene monomer
  • Device and method for removing light components in styrene monomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] like figure 1 As shown in the figure, the present embodiment provides a device for removing light components from styrene monomer, the device includes a styrene delighting distillation column 1, a column top condenser 2, a column top reflux tank 3, and an ejector 4 , intermediate heat exchanger 5, liquid ring vacuum pump 6, gas-liquid separation tank 7; wherein,

[0052] Described styrene lightening rectifying tower 1 comprises the first inlet 11 of styrene lightening rectifying tower, the second inlet 12 of styrene lightening rectifying tower and the outlet of the styrene lightening rectifying tower located at the top, The first inlet 11 of the styrene delightening rectification column is used to transport the product of the phenylethanol dehydration reaction into the styrene delightening rectification column 1; the outlet of the styrene delightening rectification column is connected to the The inlet of the column top condenser 2 is connected;

[0053] The column top...

Embodiment 2

[0064] like figure 2 As shown, the difference from the device in Example 1 is that this example provides a device for removing light components in styrene monomer, a working liquid cooler is provided between the liquid ring vacuum pump 6 and the gas-liquid separation tank 7 8. The inlet of the working fluid cooler 8 is connected to the third outlet 73 of the gas-liquid separation tank, and the outlet of the working fluid cooler 8 is connected to the second inlet 62 of the liquid ring vacuum pump.

[0065] Different from the method in Example 2, a method for removing light components in styrene monomer provided in this example also includes the following steps: in the gas-liquid separation tank 7, the exhaust gas G is discharged from the gas-liquid separation tank 7. The first outlet 71 of the separation tank is discharged, part of the discharged working fluid H is discharged from the second outlet 72 of the gas-liquid separation tank, and the other part of the discharged work...

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 belongs to the field of styrene refining, and relates to a device and a method for removing light components in a styrene monomer. The device comprises a styrene light component removal rectifying tower, a tower top condenser, a tower top reflux tank, an ejector, an intermediate heat exchanger, a liquid ring vacuum pump and a gas-liquid separation tank. According to the device and the method for removing the light components in the styrene monomer, the problems of removal and discharge of the light components can be effectively solved, and polymerization of styrene can be reduced. Compared with a single liquid ring vacuum pump system, the system has the advantages of high vacuum degree, low equipment investment, no light component enrichment and the like; compared with a multi-stage ejector system, the multi-stage ejector system has the advantages of low operation cost, low energy consumption, low wastewater amount, low working temperature and the like.

Description

technical field [0001] The invention belongs to the field of styrene refining, and more particularly relates to a device and method for removing light components in styrene monomer. Background technique [0002] Phenylethanol dehydration is an important process for styrene production and an important part of propylene oxide co-production of styrene (PO / SM). [0003] In the PO / SM process, the product at the outlet of the phenethyl alcohol dehydration reactor is purified in multiple stages to remove various impurities to obtain a styrene product with higher purity. One class of impurities is small molecule aldehydes, which are light components that need to be removed. [0004] Styrene is prone to polymerization at higher temperature, which will cause problems such as equipment and pipeline blockage. Therefore, the process of removing light components from styrene is generally carried out in a negative pressure rectification tower, and the separated light components will enter...

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 Applications(China)
IPC IPC(8): C07C7/04C07C15/46
CPCC07C7/04C07C15/46Y02P20/10
Inventor 徐垚杨照裴嘉宁郭晓园马立国张建华蔡维婷陈璐刘为钢
Owner SINOPEC ENG
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