Application of Membrane Separation Technology in Power and Petrochemical Industries

The petrochemical industry is a crucial pillar of the national economy, yet it faces significant challenges with high levels of wastewater discharge. During the "13th Five-Year Plan" period, as quality of life improves and emphasis on energy conservation and emission reduction grows, stricter demands are placed on industrial wastewater discharge intensity. The space for reducing industrial wastewater discharge is shrinking, with escalating costs, presenting a daunting challenge for wastewater treatment in the industry.

To meet new demands for pollution control and resource utilization in the petrochemical and petroleum industries, there is a pressing need to explore more efficient and environmentally friendly technologies. In petroleum and chemical production, membrane separation technology is effectively applied in processes such as organic compound separation and fuel desulfurization. This technology has been instrumental in modifying industrial PET/PTFE composite materials, facilitating effective oil droplet collection and spill-free transport. The development of membrane separation technology largely determines the energy conservation, emission reduction, and clean production levels in the petrochemical industry, making it a driving force for industry advancement. Pollution control and resource utilization in the petrochemical industry are viewed as green-friendly new processes with vast application prospects.

Dalton Membrane Technology Principles in Power and Petrochemical Industries

Membrane separation is a physical process that does not involve phase changes or additives. Membranes typically have micrometer-scale pore sizes and are categorized into microfiltration, ultrafiltration, nanofiltration, and reverse osmosis membranes based on their pore sizes or molecular weight cut-off. Organic membranes are made from high-molecular-weight materials such as cellulose acetate, aromatic polyamide, polysulfone, and fluoropolymers.

Applications of Dalton Membrane Technology in Power and Petrochemical Industries

In the power and petrochemical sectors, membrane separation technology finds extensive application in areas such as ultra-pure water preparation, condensate polishing, boiler feedwater treatment, circulating water treatment, wastewater treatment, and thermal system feedwater treatment. Key applications include:

1. Impurities Separation in Oil Products In the power and petrochemical sectors, membrane separation technology effectively removes impurities, colorants, and odoriferous substances from crude oil. This method surpasses traditional separation methods like precipitation, oscillation, and centrifugation, offering significant cost savings.

2. Separation of Liquid Mixtures In petrochemical production, efficient separation and purification of mixtures are essential. Membrane separation technology allows rapid and effective separation of mixtures with minimal waste generation. It supports continuous production, is highly energy-efficient, easily automated, and ensures stable product quality.

3. Wastewater Treatment Wastewater from power and petrochemical industries contains high levels of organic compounds, heavy metals, and other pollutants. Direct discharge can severely harm the ecological environment. Membrane separation technology is employed for treating wastewater containing acids, alkalis, salts, and organic substances, converting it into suitable water for agricultural and industrial use.

In conclusion, membrane separation technology plays a pivotal role in enhancing efficiency, sustainability, and environmental compliance across various processes in the power and petrochemical industries. Its continuous development and adoption signify a progressive step towards achieving cleaner production and meeting stringent environmental standards.