Check patentability & draft patents in minutes with Patsnap Eureka AI!

Methyl formate-methanol-liquid mixture separation energy saving method

A technology of methyl formate and mixture is applied in the field of energy saving of methanol and water mixture and separation of methyl formate to achieve the effects of low equipment cost, convenient operation and improved energy utilization rate

Active Publication Date: 2017-02-22
QINGDAO UNIV OF SCI & TECH
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of separating methyl formate-methanol-water mixture combined with partial thermally coupled rectification has not been reported yet

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
  • Methyl formate-methanol-liquid mixture separation energy saving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Feed temperature is 30 ℃, flow rate is 1000kg / h, pressure is 1atm absolute pressure, the mass fraction of methyl formate in the feed is 10%, the mass fraction of methyl alcohol is 40%, and the mass fraction of water is 50%. The theoretical plate number of the main rectifying column is 40, the feeding plate of the methyl formate-methanol-water mixture is 20, and the theoretical plate number of the auxiliary rectifying column is 15; the operating pressure of the main rectifying column is 1 atm absolute pressure, and the reflux ratio is 1, The temperature at the top of the tower is 34.3°C, the temperature at the bottom of the tower is 100.9°C, the operating pressure of the sub-distillation column is 0.8atm absolute pressure, the reflux ratio is 0.9, the temperature at the top of the tower is 59.2°C, the quality of the steam and feed entering the sub-distillation column The ratio is 0.5. The mass fraction of methyl formate after separation is 99.00%, the mass fraction of me...

Embodiment 2

[0039] Feed temperature is 30 ℃, flow rate is 1000kg / h, pressure is 1atm absolute pressure, the mass fraction of methyl formate in the feed is 30%, the mass fraction of methyl alcohol is 30%, and the mass fraction of water is 40%. The theoretical plate number of the main rectifying column is 50, the feeding plate of the methyl formate-methanol-water mixture is 25, and the theoretical plate number of the auxiliary rectifying column is 25; the operating pressure of the main rectifying column is 1 atm absolute pressure, and the reflux ratio is 2, The temperature at the top of the tower is 32.1°C, the temperature at the bottom of the tower is 100.4°C, the operating pressure of the sub-distillation tower is 0.7atm absolute pressure, the reflux ratio is 1.4, the temperature at the top of the tower is 56°C, the quality of the steam and feed entering the sub-distillation tower The ratio is 0.4. The mass fraction of methyl formate after separation is 99.50%, the mass fraction of methan...

Embodiment 3

[0043] Feed temperature is 30 ℃, flow rate is 1000kg / h, pressure is 1atm absolute pressure, the mass fraction of methyl formate in the feed is 50%, the mass fraction of methyl alcohol is 40%, and the mass fraction of water is 10%. The theoretical plate number of the main rectifying column is 60, the feeding plate of the methyl formate-methanol-water mixture is 30, and the theoretical plate number of the auxiliary rectifying column is 25; the operating pressure of the main rectifying column is 1 atm absolute pressure, and the reflux ratio is 3, The temperature at the top of the tower is 31.9°C, the temperature at the bottom of the tower is 100°C, the operating pressure of the sub-distillation column is 0.6atm absolute pressure, the reflux ratio is 2, the temperature at the top of the tower is 52.4°C, the quality of the steam and feed entering the sub-distillation column The ratio is 0.6. The mass fraction of methyl formate after separation is 99.35%, the mass fraction of methan...

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 relates to a methyl formate-methanol-liquid mixture separation energy saving method and method applicable installation. The preparation process runs as follows: pumpsmethyl formate-methanol-liquid mixture is put in a preheating device for preheating then adds in a main distillation tower for separation, puts the main distillation tower top acquired steam after being condensed in a condenser into a reflux accumulator, one portion refluxes to the main distillation tower, the other portion recovers as a methyl formate product, the main distillation tower bottom gets high purity water, the main distillation tower lower section draws a portion of steam in a secondary distillation tower, the tower top steam after being condensed in the condenser gets in a reflux accumulator, one portion refluxes to the secondary distillation tower, the other portion recovers as a methanol formate product, the tower bottom liquid pumps in a main distillation tower lower section. The method has the advantages of low energy consumption, simple preparation process, after separation high product purity and the like.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of chemical separation and purification, and in particular relates to an energy-saving method for separating a mixture of methyl formate, methanol and water. [0003] 【Background technique】 [0004] Methyl formate, also known as methyl formate, is a colorless, volatile liquid with a scent. It is a very important intermediate with a wide range of uses. It can be directly used as fumigants and fungicides for tobacco, dried fruits, grains, etc.; it is also commonly used as a solvent for nitrocellulose and cellulose acetate; in medicine It is often used as a raw material for the synthesis of sulfomethylpyrimidine, sulfomethoxine, and antitussive agent methorphan. [0005] At present, the widely used method for preparing methyl formate is to make formic acid and methanol undergo esterification reaction at a certain temperature. After the reaction, a mixture of methyl formate-methanol-water is formed, which needs t...

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): C07C67/48C07C67/54C07C69/06C07C29/74C07C29/80C07C31/04
CPCC07C29/74C07C29/80C07C67/48C07C67/54C07C69/06C07C31/04Y02P20/10
Inventor 王英龙赵永滕王勇李敏朱兆友
Owner QINGDAO UNIV OF SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com