Unlock instant, AI-driven research and patent intelligence for your innovation.

Purification method of methanesulfonic acid

A methanesulfonic acid and purification method technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as high sulfate content, achieve high purification and simple operation

Active Publication Date: 2017-05-31
湖北星火(应城)化工有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the preparation method of methanesulfonic acid is the chlorine oxidation process, and the obtained product has the problem of excessive sulfate content due to excessive oxidation.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only 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.

[0018] The embodiment of the present invention provides a method for purifying methanesulfonic acid, comprising the following steps:

[0019] Step 1: prepare barium methanesulfonate, take barium hydroxide and methanesulfonic acid solution to react, obtain quantitative barium methanesulfonate solution. The chemical reaction equation involved is: Ba(OH) 2 + 2CH 3 SO 3 H=Ba (CH 3 SO 3 ) 2 +2H 2 O. In this preparation process, the mass ratio of barium hydroxide and methanesulfonic acid is 1:2.

[0020] Step 2: Calculate the am...

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 purification method of methanesulfonic acid. The purification method comprises the following steps: preparing barium metilsulfate and taking barium hydroxide and a methanesulfonic acid solution for reacting to obtain a quantitative barium metilsulfate solution; calculating out required amount of the barium metilsulfate according to the amount of sulfuric acid contained in the methanesulfonic acid needing to be purified, and then dropwise adding the barium metilsulfate solution under the stirring condition to obtain a turbid mixture; carrying out static precipitation treatment on the turbid mixture to obtain supernate liquid, namely the methanesulfonic acid, and lower precipitation, namely barium sulfate; taking out the supernate liquid, and carrying out distillation treatment to obtain the methanesulfonic acid with extremely-low content of sulfate and high purity. The purification method of the methanesulfonic acid, provided by the invention, has the advantages of simple operation and high purity.

Description

technical field [0001] The invention relates to a method for purifying methanesulfonic acid, which belongs to the field of chemical industry. Background technique [0002] At present, the preparation method of methanesulfonic acid is to adopt chlorine oxidation process, and in the obtained product, due to excessive oxidation, there will be a problem of excessively high sulfate content. [0003] Since the boiling points of sulfuric acid and methanesulfonic acid are similar, it is difficult to separate sulfuric acid by distillation. [0004] Therefore be necessary to design a kind of purification method of methanesulfonic acid, to overcome the above problems. Contents of the invention [0005] The object of the present invention is to overcome the defective of prior art, a kind of purification method of the methanesulfonic acid that is simple to operate, purification degree is provided. [0006] The present invention is achieved like this: [0007] The invention provides ...

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): C07C303/44C07C309/04
CPCC07C303/44C07C309/04
Inventor 汪志君
Owner 湖北星火(应城)化工有限公司