1,3-Butanediol Purification via Controlled Odorant Concentration
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Solution Overview
Problem
Existing methods for producing 1,3-butanediol with little odor are inefficient and costly, as they require excessive purification steps and do not effectively quantify or manage odor substances.
Innovation Solution
Identifying and managing specific odor substances A and B within defined concentration ranges (2-10 wtppm for A and 4-25 wtppm for B) in the 1,3-butanediol production process to achieve a stable and odorless product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If excessive purification steps are used to remove odor substances from 1,3-butanediol, then the odor of the product is reduced, but the production cost and process complexity increase significantly
Solution Approach 1:
The patent changes the parameter of odor substance concentration from complete removal to controlled presence within specific ranges (2-10 wtppm for substance A, 4-25 wtppm for substance B). This parameter change allows the product to have little odor while avoiding excessive purification steps, resolving the contradiction between odor reduction and process complexity
Solution Approach 2:
The patent introduces feedback control by establishing specific concentration ranges for odor substances and controlling the purification process to maintain these ranges. This feedback mechanism enables stable production of odorless 1,3-butanediol without requiring excessive purification capacity, balancing odor reduction with process simplicity
2Object-affected harmful factors
If traditional purification methods are used to remove high boiling point compounds, then some odor substances are removed, but the odor substance is not clarified and the degree of purification required cannot be quantified
Solution Approach 1:
The patent extracts and identifies the specific odor substances (substance A and substance B) from the complex mixture of impurities in 1,3-butanediol. By taking out and characterizing these specific compounds, the patent clarifies what needs to be controlled, enabling targeted purification and quantification of the required degree of purification
Solution Approach 2:
The patent replaces the trial-and-error mechanical purification approach with a science-based control system that uses identified odor substance characteristics (concentration ranges) to guide purification. This substitution enables precise control and quantification of purification requirements
3Object-affected harmful factors
If a facility with excessive purification capacity is designed to produce odorless 1,3-butanediol, then the product quality is improved, but the production efficiency and economy are reduced
Solution Approach 1:
The patent applies partial action by removing only the necessary amount of odor substances to achieve the target concentration ranges, rather than using excessive purification capacity. This partial action approach produces odorless 1,3-butanediol while maintaining production efficiency and economy
Solution Approach 2:
The patent creates a universal control standard (specific concentration ranges for odor substances) that can be applied consistently across different production batches and scales. This universal approach enables stable production of odorless product without requiring facility redesign or excessive purification capacity for each case
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the stable and economic production of 1,3-butanediol with little odor, suitable for cosmetic applications, without the need for excessive purification steps.
Implementation Method 1
acetaldehyde generated by heating and decomposing the aldoxane is distilled off
Implementation Method 2
this paraldol is used as a raw material for the hydrogenation reaction to produce 1,3-butanediol
Implementation Method 3
followed by the distillation for removing low boiling point compounds from the 1,3-butanediol fraction
Data Source
AI summary
The purpose of the present invention is to stably provide 1,3-butanediol which is less odorous and is suitable for use in cosmetics. The 1,3-butanediol has a content of odorous substance A, which is represented by chemical formula (A), of 2-10 wtppm and a content of odorous substance B, which is represented by chemical formula (B), of 4-25 wtppm.