Gas Treatment Apparatus Phase Separation Regeneration
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Solution Overview
Problem
Conventional gas treatment methods require high energy consumption for separating and recovering acidic compounds, such as carbon dioxide, from gases using absorbents and regenerators.
Innovation Solution
A gas treatment method and apparatus that employs a phase-separable treatment liquid and a separation promoting gas in the regenerator to facilitate low-temperature regeneration of acidic compounds, reducing energy consumption by leveraging phase separation and heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional heating regeneration is used to separate acidic compound from treatment liquid, then separation effectiveness is improved, but energy consumption increases
Solution Approach 1:
The invention changes the physical state parameters of the treatment liquid by controlling temperature and pressure to induce phase separation. By adjusting these parameters, the treatment liquid transitions between single-phase and two-phase states, enabling acidic compound separation without high-temperature heating, thus reducing energy consumption while maintaining separation effectiveness
Solution Approach 2:
The invention utilizes phase transition of the treatment liquid as the core mechanism. When the treatment liquid absorbs acidic compound, it undergoes phase separation into two phases under specific temperature and pressure conditions. During regeneration, by controlling phase transition through pressure reduction or temperature adjustment, the acidic compound is released without requiring conventional high-energy heating processes
2Use of energy by moving object
If phase separation is used for regeneration, then energy consumption is reduced, but regeneration rate may decrease
Solution Approach 1:
The invention introduces a separation promoting gas as an intermediary substance in the regenerator. This gas facilitates the phase separation process and enhances the release of acidic compound from the treatment liquid during regeneration, thereby improving regeneration rate without compromising the energy-saving benefits of phase separation
Solution Approach 2:
The invention uses a composite system consisting of treatment liquid and separation promoting gas together in the regenerator. This composite approach combines the phase separation capability of the treatment liquid with the mass transfer enhancement provided by the separation promoting gas, achieving both low energy consumption and high regeneration rate
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
The method effectively reduces energy required for acidic compound separation and recovery by optimizing regeneration temperatures and using a separation promoting gas to enhance regeneration rates, achieving lower energy consumption compared to traditional methods.
Implementation Method 1
The absorber brings the gas to be treated into contact with the treatment liquid, so as to make the treatment liquid absorb the acidic compound in the gas to be treated
Implementation Method 2
The treatment liquid causes phase separation, upon absorbing the acidic compound, into phases with different content proportions of the acidic compound
Implementation Method 3
The regenerator heats the treatment liquid, to thereby separate the acidic compound from the treatment liquid
Implementation Method 4
subjecting the amine compound or mixture having absorbed the acidic compound to heating and supergravity desorption
Data Source
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AI summary
A gas treatment method includes an absorption step in which a gas to be treated containing an acidic compound, such as carbon dioxide, is brought into contact, in an absorber (12), with a treatment liquid that absorbs the acidic compound; and a regeneration step in which the treatment liquid, having the acidic compound absorbed therein, is sent to a regenerator (14), and the treatment liquid is then heated to separate the acidic compound from the treatment liquid. In the regeneration step, a gas almost insoluble to the treatment liquid, such as hydrogen gas, is brought into contact with the treatment liquid.