Pressurized Heating in Acid Gas Capture Adsorption Beds
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Solution Overview
Problem
Existing acid gas capture systems face inefficiencies in heating the gas adsorption part under reduced pressure, leading to increased energy requirements for desorbing the acid gas.
Innovation Solution
An acid gas capture system that operates under pressurized conditions, using a heating medium with a pressure above atmospheric pressure to efficiently heat and desorb the acid gas adsorption material, capturing the gas with reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the acid gas adsorption part is heated under reduced pressure to desorb the acid gas, then the acid gas can be captured, but the heating efficiency decreases and energy consumption increases
Solution Approach 1:
The patent changes the pressure parameter from reduced pressure to atmospheric pressure or higher during the desorption heating process. This parameter change improves heating efficiency because heat transfer is more effective at higher pressures, reducing the energy required to heat the adsorption part and desorb the acid gas while maintaining effective capture.
2Quantity of substance
If the pressure is reduced below atmospheric pressure to suck and capture the acid gas, then the acid gas can be separated, but the heating efficiency of the gas adsorption part decreases
Solution Approach 1:
The patent employs periodic action by alternating between pressure reduction phases (for acid gas capture) and pressure maintenance or increase phases (for efficient heating and desorption). During capture, pressure is reduced to suction the acid gas; during subsequent heating, pressure is maintained at atmospheric or higher levels to ensure efficient heat transfer, thus resolving the conflict between capture effectiveness and heating efficiency.
3Quantity of substance
If the pressure is reduced to capture the acid gas, then separation can be achieved, but the energy required for desorbing the acid gas increases
Solution Approach 1:
The patent utilizes parameter changes by transitioning from pressure reduction (for separation) to atmospheric pressure or higher (for desorption). This change in pressure parameter allows efficient heat transfer during desorption, reducing the total energy required to desorb the acid gas while maintaining effective separation during the pressure reduction phase.
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 system effectively captures acid gas with less energy by utilizing a pressurized heating medium to enhance heating efficiency and reduce the energy needed for desorption.
Implementation Method 1
an adsorption step of causing an acid gas adsorption material to adsorb an acid gas to separate the acid gas from the atmosphere
Implementation Method 2
a desorption step of heating a gas adsorption part to a predetermined desorption temperature to cause the acid gas adsorption material to desorb the acid gas
Implementation Method 3
The heating medium supply part is capable of supplying a heating medium having a pressure above the atmospheric pressure to the flow passage
Data Source
AI summary
An acid gas capture system includes: an acid gas adsorption part including an acid gas adsorption material capable of adsorbing an acid gas contained in a gas to be treated and capable of desorbing the adsorbed acid gas; a housing part, which includes a flow passage to which the gas to be treated is to be supplied, and which is configured to house the acid gas adsorption part so that the acid gas adsorption material is positioned in the flow passage; a heating medium supply part capable of supplying a heating medium having a pressure above an atmospheric pressure to the flow passage; and a capture part capable of capturing a captured gas containing the heating medium having passed through the acid gas adsorption part and the acid gas desorbed from the acid gas adsorption material, from the housing part.