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

Defoaming agent used for methyl-ethyl ketone butylenes purification concentration process

A technology of acetone butene and defoamer, which is applied in the field of chemical additives, refining and chemical production additives - butene concentration defoamer, to ensure temperature resistance and chemical stability, and reduce foam surface energy Effect

Inactive Publication Date: 2008-09-17
SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still no special defoamer for the production characteristics of butene concentration and the mixed solvent system of methyl ethyl ketone-N-formylmorpholine in the market.

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
  • Defoaming agent used for methyl-ethyl ketone butylenes purification concentration process
  • Defoaming agent used for methyl-ethyl ketone butylenes purification concentration process
  • Defoaming agent used for methyl-ethyl ketone butylenes purification concentration process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Component formula: by weight percentage.

[0043] Methyl silicone oil 100cs 50.0%;

[0044] Methyl silicone oil 1000cs 25.0%;

[0045] Hydroxyl-terminated fluorosilicone oil 23.0%;

[0046] Vapor phase hydrophobic white carbon black 1.9%;

[0047] Calcium Stearate 0.1%.

[0048] Preparation Process:

[0049] a. Accurately weigh each component, put it into the batching kettle, and lower the lid of the kettle.

[0050] b. Start the stirring paddle, gradually increase the speed, control at 500r / min and stir for 15 minutes; start the disperser, gradually increase the speed, keep it at 800r / min, and disperse for 20 minutes.

[0051] c. Keep the rotation speed of the agitator constant, and gradually close the disperser from fast to slow; start the homogenizer, from slow to fast, and finally control it at 2000r / min, and homogenize for 10 minutes.

[0052] d. Keep the rotation speed of the agitator constant, and gradually close the homogenizer from fast to slow; start the...

Embodiment 2

[0059] Component formula: by weight percentage.

[0060] Methyl silicone oil 100cs 70.0%;

[0061] Methyl silicone oil 1000cs 12.0%

[0062] Group-terminated fluorosilicone oil 15.0%;

[0063] Vapor-phase hydrophobic silica 2.9%;

[0064] Calcium Stearate 0.1%.

[0065] Preparation Process:

[0066] a. Accurately weigh each component, put it into the batching kettle, and lower the lid of the kettle.

[0067] b. Start the stirring paddle, gradually increase the speed, control at 300r / min and stir for 20 minutes; start the disperser, gradually increase the speed, keep it at 800r / min, and disperse for 20 minutes.

[0068] c. Keep the rotation speed of the agitator constant, and gradually close the disperser from fast to slow; start the homogenizer, from slow to fast, and finally control it at 1800r / min, and homogenize for 10 minutes.

[0069] d. Keep the rotation speed of the agitator constant, and gradually close the homogenizer from fast to slow; start the disperser, from s...

Embodiment 3

[0076] Component formula: by weight percentage.

[0077] Methyl silicone oil 100cs 63.0%;

[0078] Methyl silicone oil 1000cs 20.0%;

[0079] Group-terminated fluorosilicone oil 15.0%;

[0080] Vapor phase hydrophobic white carbon black 1.9%;

[0081] Calcium Stearate 0.1%.

[0082] Preparation Process:

[0083] a. Accurately weigh each component, put it into the batching kettle, and lower the lid of the kettle.

[0084] b. Start the stirring paddle, gradually increase the speed, control at 400r / min and stir for 15 minutes; start the disperser, gradually increase the speed, keep it at 900r / min, and disperse for 15 minutes.

[0085] c. Keep the rotation speed of the agitator constant, and gradually close the disperser from fast to slow; start the homogenizer, from slow to fast, and finally control it at 1800r / min, and homogenize for 10 minutes.

[0086] d. Keep the rotation speed of the agitator constant, and gradually close the homogenizer from fast to slow; start the di...

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 provides a foam killer used in the concentration process of methyl ethyl ketone butylene, which is made by methyl silicone oil 100cs, methyl silicone oil 1000cs, end-blocked fluorosilicone oil, gas phase hydrophobic white carbon black and calcium stearate which are compounded according to a certain proportion. Combined with the characteristic of methyl ethyl ketone-N-formylmorpholine solvent, the foam killer develops an organosilicon system foam killer according to the production characteristics of the concentration work section of the methyl ethyl ketone butylene; the foam killer intensifies the froth breaking effect, has continuous defoaming effects at the same time, and effectively reduces the voltage drop inside an extractive distillation column, thereby exerting positive influence on the percent conversion and the purity quotient of products. After the foam killer is used in the concentration process of the methyl ethyl ketone butylene, the mass percentage of the butylene in the discharge port at the concentration post is increased by 0.5 percent, and the product qualification ratio of liquefied gas is increased from the original 81.5 percent to 89.6 percent.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to a chemical auxiliary agent, in particular to an oil refining and chemical production auxiliary agent—butene concentration defoamer, which is suitable for the butene concentration production process of a methyl ethyl ketone plant, and other products using methyl ethyl ketone, N - The production process of formylmorpholine solvent. Background technique [0002] In the process of direct hydration of n-butene to produce methyl ethyl ketone, the butene concentration production process uses a mixed solvent system of methyl ethyl ketone-N-formylmorpholine for extractive distillation to separate butene and butane. The advantage of this solvent system is that it combines the respective advantages of methyl ethyl ketone and N-formylmorpholine. It not only retains the advantages of good solubility and lower boiling point of methyl ethyl ketone to carbon four components, but also has...

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
IPC IPC(8): C07C49/10C07C45/81
Inventor 赵琳邵鹏程张耀亨曲云徐斌潘广勤齐永新周晓云张霖娄立娟杨浩然刘文正张朝阳
Owner SINOPEC LANZHOU GASOLINEEUM CHEM IND 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