Method for improving p-cresol production rate and p-cresol product purity
A production rate, p-cresol technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems affecting the concentration of sodium toluenesulfonate, the reaction cannot be carried out, and the concentration of total sodium salts is high, so as to achieve improvement Productivity benefits, cost savings, effects of increased reaction rates
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0027] Example 1
[0028] Such as figure 2 As shown, a method for improving the production rate and purity of p-cresol includes a sulfonation reaction process, a neutralization reaction process, and an alkali melting process, wherein the specific operation steps of the alkali melting process are as follows:
[0029] (1) Heat the sodium sulfite solution, add solid sodium sulfite to the by-product sodium sulfite solution obtained in the acidification process of the p-toluenesulfonic acid production process, and finally control the concentration of the solution to 320g / L, and then heat it to boiling;
[0030] (2) Alkali melting reaction: After mixing molten NaOH and sodium p-toluenesulfonate solution, the alkali melting reaction is carried out.
[0031] The reaction raw materials are the by-product sodium sulfite solution of the acidification process in the p-toluenesulfonic acid production process, the sodium p-toluenesulfonate solution generated in the neutralization reaction process,...
Example Embodiment
[0033] Example 2
[0034] A method for improving the production rate and purity of p-cresol includes a sulfonation reaction process, a neutralization reaction process and an alkali melting process, wherein the specific operation steps of the alkali melting process are as follows:
[0035] (1) Heating the sodium sulfite solution: add solid sodium sulfite to the by-product sodium sulfite solution obtained in the acidification process of the p-toluenesulfonic acid production process, and finally control the concentration of the solution to 360g / L, and then heat it to boiling;
[0036] (2) Alkali melting reaction: After mixing molten NaOH and sodium p-toluenesulfonate solution, the alkali melting reaction is carried out.
[0037] The reaction raw materials are the by-product sodium sulfite solution of the acidification process in the p-toluenesulfonic acid production process, the sodium p-toluenesulfonate solution generated in the neutralization reaction process, and molten sodium hydroxid...
Example Embodiment
[0039] Example 3
[0040] A method for improving the production rate and purity of p-cresol includes a sulfonation reaction process, a neutralization reaction process and an alkali melting process, wherein the specific operation steps of the alkali melting process are as follows:
[0041] (1) Heating the sodium sulfite solution: add solid sodium sulfite to the by-product sodium sulfite solution obtained in the acidification process of the p-toluenesulfonic acid production process, and finally control the concentration of the solution to 340g / L, and then heat it to boiling;
[0042] (2) Alkali melting reaction: After mixing molten NaOH and sodium p-toluenesulfonate solution, the alkali melting reaction is carried out.
[0043] The reaction raw materials are the by-product sodium sulfite solution of the acidification process in the p-toluenesulfonic acid production process, the sodium p-toluenesulfonate solution generated in the neutralization reaction process, and molten sodium hydroxid...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap