Variable Acetyl Stream Processing System
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Solution Overview
Problem
Current processes for producing and separating acetic acid and acetic anhydride require separate equipment lines, leading to increased capital and operating expenses due to the need for dual separation and purification systems.
Innovation Solution
A system that can operate in both acid and anhydride modes, allowing the same equipment to process either concentrated acetic acid or acetic anhydride streams by incorporating a hydrolysis zone and separation zone capable of switching between modes, thereby reducing the need for separate equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate equipment lines are used for acetic acid and acetic anhydride separation, then purification effectiveness is improved, but device complexity and capital expense increase
Solution Approach 1:
The patent applies universality by designing a single separation zone that can function in multiple modes: acid mode for acetic acid separation and anhydride mode for acetic anhydride separation. The same equipment infrastructure handles both product streams by switching operational modes, eliminating the need for duplicate separate equipment lines while maintaining purification effectiveness for both chemicals
Solution Approach 2:
The patent implements dynamics by enabling the separation zone to dynamically switch between acid mode and anhydride mode based on which product stream requires processing. This dynamic reconfiguration allows the equipment to adapt its separation parameters and operational characteristics to match the specific purification requirements of either acetic acid or acetic anhydride, maintaining high purification effectiveness across both modes
2Manufacturing precision
If separate equipment lines are used for acetic acid and acetic anhydride processing, then product purity is improved, but operating expense increases
Solution Approach 1:
The patent reduces operating expenses by consolidating processing functions into a universal separation zone that handles both acetic acid and acetic anhydride streams. This eliminates the need to operate two separate equipment lines simultaneously, reducing maintenance costs, energy consumption, and operational overhead while maintaining the ability to achieve high product purity for either chemical through mode-specific optimization
3Productivity
If dedicated equipment is used for each product stream, then separation efficiency is improved, but adaptability decreases
Solution Approach 1:
The patent achieves both high separation efficiency and high adaptability by making the separation zone dynamic. The system can switch between acid mode and anhydride mode to adapt to different product stream requirements, while each mode is optimized to maintain high separation efficiency comparable to dedicated equipment. The dynamic reconfiguration allows the same physical infrastructure to deliver specialized performance for either chemical
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 enables cost savings by allowing the same equipment to handle both product streams, reducing the requirement for duplicate separation equipment and optimizing operational efficiency.
Implementation Method 1
at least one hydrolysis zone capable of operating a hydrolysis process to hydrolyze at least some acetic anhydride in the at least one acetyl feed composition
Implementation Method 2
a first separation zone configured in a manner to separate a first separated stream from a first concentrated stream
Data Source
AI summary
The invention provides systems and processes for concentrating acetic acid and acetic anhydride streams. The systems allow operation of equipment used for such concentrations in two or more modes of operation. At least one mode is intended to produce a concentrated or purified acetic acid stream. At least one other mode is intended to produce a concentrated or purified acetic anhydride stream.