1,4-Diaminobutane Purification via Distillation
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Solution Overview
Problem
The conventional biological method for producing 1,4-diaminobutane generates a large amount of by-products and requires an additional alkali compound for purification, increasing costs and complexity.
Innovation Solution
A method involving the separation and fractional distillation of 1,4-diaminobutane carbonate and bicarbonate at specific temperature and pressure ranges without adding additional base materials, using a nitrogen source like ammonia to prevent by-product generation, thereby simplifying the purification process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alkali compound is added to purify sulfate in fermented broth, then purification of 1,4-diaminobutane is achieved, but large amount of by-products are produced and additional purifying process is needed
Solution Approach 1:
The invention extracts and removes sulfate from the fermented broth through filtration or centrifugation before distillation, separating the impurity removal step from the main purification process. This prevents sulfate interference during distillation without requiring additional alkali compounds, thereby simplifying the overall process while maintaining purification effectiveness.
Solution Approach 2:
The invention performs preliminary removal of sulfate from the fermented broth prior to the distillation step. By eliminating sulfate beforehand, the subsequent distillation process proceeds without complications, avoiding the need for alkali compound addition and subsequent by-product purification steps.
2Object-affected harmful factors
If conventional biological method is used to produce 1,4-diaminobutane, then environment-friendly production is achieved, but large amount of by-products are produced requiring additional purifying process
Solution Approach 1:
The invention changes the physical parameters of the fermentation broth by adjusting pH to acidic conditions (pH 2-4) before distillation. This parameter change facilitates selective distillation of 1,4-diaminobutane at lower temperatures while leaving by-products behind, thereby reducing by-product generation and simplifying purification while maintaining the environmental benefits of biological production.
3Productivity
If distillation is performed at high temperature and atmospheric pressure, then separation efficiency is improved, but energy consumption increases and product degradation may occur
Solution Approach 1:
The invention utilizes phase transition of 1,4-diaminobutane from liquid to vapor at relatively low temperatures (below 100°C) under reduced pressure conditions. This allows efficient separation through distillation while minimizing energy consumption and preventing thermal degradation of the product, as the compound transitions to vapor phase at mild conditions.
Solution Approach 2:
The invention performs preliminary removal of sulfate and other non-volatile impurities through filtration or centrifugation before distillation. This preliminary action prevents fouling of the distillation system and enables more efficient distillation at lower temperatures, thereby reducing energy consumption while maintaining high separation efficiency.
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 method allows for high-yield recovery of 1,4-diaminobutane with reduced by-product formation and alkali compound consumption, decreasing the overall purification cost.
Implementation Method 1
separating a second composition including at least one of 1,4-diaminobutane carbonate and 1,4-diaminobutane bicarbonate from a first composition including at least one of 1,4-diaminobutane carbonate and 1,4-diaminobutane bicarbonate by distillation
Implementation Method 2
removing carbonate by fractional distillation from the at least one of 1,4-diaminobutane carbonate and 1,4-diaminobutane bicarbonate included in the second composition to recover 1,4-diaminobutane
Data Source
Figure 1~2
AI summary
A method for purifying 1,4-diaminobutane comprising the steps of:: separating a second composition including carbonate salt of 1,4-diaminobutane from a first composition including carbonate salt of 1,4-diaminobutane by distillation; and removing carbonate from carbonate salt of 1,4-diaminobutane included in the second composition to recover 1,4-diaminobutane.