I. Observing Color Changes Observing color changes is one of the most intuitive methods for determining whether potassium permanganate-impregnated activated alumina requires replacement. Fresh potassium permanganate-impregnated activated alumina typically appears purplish-red or deep purple; this coloration is due to the potassium permanganate loaded onto its surface. During the process of adsorbing and oxidizing harmful gases, the potassium […]
In modern hydrogen peroxide production, a variety of other adsorbents—such as silica gel, molecular sieves, and activated carbon—are also available on the market for use in similar processes. This paper presents a comparative analysis of activated alumina versus these adsorbents, examining them across three key dimensions: performance, application, and cost, with the aim of assisting […]
In processes involving compressed air drying, air separation, natural gas dehydration, and industrial gas purification, the dew point serves as a critical metric for assessing the dryness of a gas. When selecting an adsorbent, many users face a common dilemma: which material—activated alumina or molecular sieves—is the right choice? Activated Alumina: Dew Point Capabilities Activated […]
Fundamental Principles of Activated Alumina and Molecular Sieves Activated Alumina Activated alumina is a porous alumina adsorbent characterized by a high specific surface area and excellent hygroscopic properties. Internally, it possesses an abundant microporous structure that enables it to rapidly adsorb moisture from the air through physical adsorption. Key Features: · Strong water adsorption capacity […]
With the growing demand for large-scale air separation units, high-pressure oxygen generation systems, and continuous production operations, traditional adsorbents are increasingly unable to meet the requirements for long-cycle operation; consequently, high-strength activated alumina is becoming the preferred choice for a growing number of air separation enterprises. Why is air pretreatment essential for air separation units? […]
In catalytic systems, inert alumina ceramic balls serve as both bottom support layers and capping materials, playing a crucial role in supporting the catalyst, ensuring uniform distribution of gas and liquid flows, and protecting the reactor. Compared to ordinary ceramic materials, high-performance alumina ceramic balls—distinguished by their exceptional mechanical strength, high-temperature resistance, and chemical stability—have […]
I. What Are Inert Alumina Ceramic Balls? Inert alumina ceramic balls are an industrial ceramic material manufactured through high-temperature sintering, utilizing high-purity alumina as their primary raw material. They are typically employed at the bottom of reactors, within catalyst bed support layers, and in tower packing layers, serving primarily to: • Support the catalyst bed […]
As a core material in industrial catalytic systems, alumina catalyst supports are widely used in various catalytic reaction devices due to their high specific surface area, excellent thermal stability, and good formability. Facing the complex operating conditions required by customers in different countries and industries, Zibo Xiangrun Environmental Engineering Co., Ltd. continuously optimizes its product […]
Chlorides not only corrode equipment but also cause catalyst poisoning, adsorbent failure, and product quality degradation. Therefore, selecting suitable dechlorination materials is crucial for enterprises to reduce operating costs and improve production efficiency. Currently, there are many types of dechlorination materials on the market, including activated alumina, activated carbon, molecular sieves, alkaline adsorbents, and some […]
What are the hazards of chlorides in industrial gases? Although chlorides in industrial gases are typically present in ppm levels or even lower, long-term accumulation can cause continuous damage to the system. First, chlorides easily corrode metal equipment, especially in high-temperature and high-humidity environments, accelerating the corrosion and aging of heat exchangers, reactors, and pipelines. […]