Synergized Fluid Processing Circuit for Acid Gas Dehydration
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Solution Overview
Problem
Conventional acid gas dehydration methods, such as glycol dehydration and refrigeration processes, are inefficient and environmentally costly due to high chemical consumption, energy requirements, and CO2 emissions, and often require expensive equipment and continuous chemical reclamation.
Innovation Solution
The method involves synergizing fluid processing circuits by combining different unit operations, such as dehydration and condensation processes, to optimize acid gas dehydration, utilizing thermal and mechanical attributes to recover components not recoverable in conventional methods, and reducing the number of unit operations to achieve enhanced efficiency and environmental benefits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If glycol dehydration is used to remove water from acid gas streams, then dehydration efficiency is improved, but chemical consumption and equipment cost increase
Solution Approach 1:
The patent extracts and removes water from the acid gas stream using refrigeration condensation, eliminating the need for glycol chemicals. The water is condensed out through temperature reduction and separated in a low-temperature separator, achieving dehydration without chemical consumption.
Solution Approach 2:
The patent replaces the chemical absorption system (glycol dehydration) with a physical refrigeration system. The mechanical refrigeration unit with heat exchangers and separators substitutes the chemical process, reducing both chemical consumption and equipment material requirements.
2Manufacturing precision
If glycol dehydration is used to remove water from acid gas streams, then dehydration efficiency is improved, but equipment cost increases due to corrosion resistance requirements
Solution Approach 1:
The patent replaces the chemical absorption system requiring corrosion-resistant materials with a physical refrigeration system. The refrigeration process operates at lower temperatures without corrosive chemicals, allowing the use of standard carbon steel equipment instead of expensive stainless steel.
Solution Approach 2:
The patent changes the operating parameters from chemical absorption at elevated temperatures to physical condensation at low temperatures. This parameter change eliminates the corrosive environment, reducing equipment material requirements and manufacturing costs.
3Quantity of substance
If refrigeration is used for dehydration, then chemical consumption is reduced, but energy consumption increases
Solution Approach 1:
The patent merges the refrigeration dehydration function with the existing acid gas compression process. The refrigeration unit is integrated into the compression train, utilizing the same infrastructure and reducing overall energy consumption compared to standalone refrigeration systems.
Solution Approach 2:
The refrigeration system performs multiple functions: it dehydrates the acid gas stream, cools the gas for downstream processing, and can potentially recover cold energy for other process uses. This multi-functionality justifies the energy investment by providing multiple benefits.
4Reliability
If conventional dehydration equipment is used, then dehydration function is achieved, but equipment size and complexity increase
Solution Approach 1:
The patent replaces complex chemical dehydration equipment (absorption columns, reboilers, strippers) with a simpler refrigeration system consisting of heat exchangers and low-temperature separators. This mechanical substitution reduces equipment complexity and footprint while maintaining dehydration reliability.
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 leads to improved acid gas dehydration efficiency, reduced energy consumption, smaller equipment needs, and lower environmental impact by optimizing unit operations and eliminating unnecessary steps, thereby reducing capital and operational expenses while minimizing CO2 emissions.
Implementation Method 1
cooling the acid gas stream to a temperature sufficient to condense water and other condensable components
Implementation Method 2
compressing the acid gas stream to a pressure sufficient to achieve the desired dehydration level
Data Source
AI summary
Methods are presented for improving the efficiency of gas and/or fluid processing. The methods are applicable to fluid streams which may contain gas, liquid, entrainments, and combinations thereof. Embodiments are provided where inefficiencies in existing, for example, dehydration and/or condensation circuits are analyzed and further operations are added or removed or existing operations are relocated and/or removed. Other synergistic combinations are disclosed. The methods are predicated upon synergized amalgamation to realize the benefits of blended processing.