Gas Separation Membrane Module Adhesive Composition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing membrane modules for gas separation face challenges in achieving a balance between handleability during manufacturing and long-term stability, particularly for hydrocarbon gas separation, due to limitations in adhesive materials that can withstand chemical resistance and durability, leading to issues like peeling, contamination, and reduced purity over time.
Innovation Solution
A membrane module design featuring a gas separation membrane with a porous structure and an adhesive part that satisfies specific composition and durability criteria, including a low-mobility component, nitrogen and sulfur content, and hardness, ensuring high resistance to hydrocarbon gases and metal salts, allowing for continuous high-purity gas supply and extended operational stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional adhesive materials are used for affixing the gas separation membrane to the housing, then the membrane module can be manufactured with ease, but the adhesive deteriorates over time due to chemical exposure, leading to peeling, contamination, and reduced gas purity
Solution Approach 1:
The patent changes the chemical parameters of the adhesive by specifying precise compositional ratios (component A: component B = 95:5 to 5:95, preferably 80:20 to 20:80) and molecular weight ranges (number average molecular weight 10,000 to 1,000,000). These parameter changes transform conventional adhesive materials into a chemically resistant formulation that maintains stability in hydrocarbon gas environments while remaining manufacturable.
Solution Approach 2:
The patent employs a composite adhesive system consisting of two components (A and B) that are mixed in specific ratios. Component A has a number average molecular weight of 10,000 to 1,000,000 and component B has a number average molecular weight of 100 to 100,000. This composite material structure provides both ease of application during manufacturing and long-term chemical resistance, resolving the contradiction between manufacturability and reliability.
2Reliability
If the adhesive part has high chemical resistance to withstand hydrocarbon gases and metal salts, then long-term durability is improved, but the selection of suitable adhesive materials becomes limited and manufacturing complexity increases
Solution Approach 1:
The patent establishes specific parameter ranges for the adhesive components to achieve chemical resistance: component A with number average molecular weight 10,000 to 1,000,000, component B with number average molecular weight 100 to 100,000, and mixing ratios from 95:5 to 5:95. These parameter specifications provide clear manufacturing guidelines that simplify material selection while ensuring durability against hydrocarbon gases and metal salts.
3Productivity
If a gas separation active layer containing metal is used to enhance gas separation performance, then separation efficiency is improved, but the adhesive is more susceptible to deterioration from metal salt promotion, reducing long-term stability
Solution Approach 1:
The patent uses a composite adhesive system where component A (number average molecular weight 10,000 to 1,000,000) and component B (number average molecular weight 100 to 100,000) are mixed in specific ratios. This composite structure provides enhanced chemical resistance that allows the adhesive to withstand the presence of metal salts in the gas separation active layer, maintaining both high separation performance and long-term stability.
Solution Approach 2:
The patent modifies the adhesive parameters by controlling the molecular weight distribution and compositional ratio of two components. This parameter optimization creates an adhesive formulation that is resistant to metal salt promotion, enabling the use of metal-containing gas separation active layers without compromising long-term adhesive stability.
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 solution enables a continuous gas supply system that maintains high permeation rates and separation performance for hydrocarbon gases like olefins, achieving purity levels of 99.5% or higher with reduced space occupancy and improved durability, addressing the limitations of traditional adhesive materials.
Implementation Method 1
an adhesive part for affixing the gas separation membrane to the housing, wherein the adhesive part is composed of a crosslinked structure formed by chemical bonding between component A and component B
Data Source
AI summary
The present disclosure provides a gas separation membrane module that has high, long-term utility. The present disclosure provides a gas separation membrane module that has: a housing; a gas separation membrane that is arranged inside the housing; and an adhesive part that fixes the gas separation membrane to the housing.