Solid Amine Acidic Gas Adsorbent Heat Resistance
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Solution Overview
Problem
Conventional acidic gas adsorbents using liquid amine compounds face challenges with heat resistance, as they tend to volatilize easily, reducing their effectiveness in high-temperature environments.
Innovation Solution
A solid amine compound is supported on the surfaces of a porous body with a large pore volume, forming a thin cover layer that enhances heat resistance and adsorption efficiency without significantly reducing the adsorption capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a liquid amine compound is used as the adsorbent, then the adsorption speed of acidic gas is improved, but the heat resistance deteriorates
Solution Approach 1:
The invention changes the physical state parameter of the amine compound from liquid to solid form. This parameter change resolves the contradiction by maintaining the chemical reactivity needed for fast adsorption while eliminating the volatility issue that causes poor heat resistance. The solid amine compound is achieved through polymerization or condensation reactions that increase molecular weight and decrease melting point below operating temperature.
Solution Approach 2:
The invention creates a composite material system consisting of a porous support body combined with solid amine compound. The porous support provides structural stability and heat resistance, while the solid amine compound provides high adsorption speed. This composite structure resolves the contradiction by combining materials with complementary properties.
2Quantity of substance
If the pore volume of the porous body is increased, then the adsorption capacity is improved, but the adsorption speed deteriorates
Solution Approach 1:
The invention applies local quality by creating a thin cover layer of solid amine compound on the pore surfaces rather than filling the entire pore volume. This localized placement ensures that acidic gas molecules can quickly reach and adsorb onto the amine compound at the pore entrances and surfaces, maintaining high adsorption speed while still providing sufficient adsorption capacity through the distributed cover layer across the porous structure.
Solution Approach 2:
The invention utilizes a porous body with controlled pore structure as the support matrix. The porous structure provides large surface area for the solid amine compound to form cover layers, enabling both high adsorption capacity and maintained adsorption speed. The pore architecture is designed to facilitate gas diffusion while providing adequate surface area for effective adsorption.
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 acidic gas adsorbent demonstrates improved heat resistance and adsorption speed while maintaining a high adsorption capacity, making it suitable for long-term use in various environmental conditions.
Implementation Method 1
an adsorption method in which acidic gas is caused to be adsorbed by an adsorbent to be separated
Data Source
AI summary
The present invention provides an acidic gas adsorbent having improved heat resistance. The acidic gas adsorbent of the present invention includes a porous body, and an amine compound being a solid and being supported on surfaces of pores of the porous body. The acidic gas adsorbent includes, for example, a cover layer covering the surfaces of the pores of the porous body, and the cover layer includes the amine compound. As an example, when each pore of the porous body is assumed to have a spherical shape, the cover layer has a thickness of 5.0 nm or less, the thickness being calculated from the average pore diameter of the porous body, the pore volume of the porous body, and the pore volume of the acidic gas adsorbent.