What should be paid attention to when selecting activated alumina?

1. Drying of liquid organic compounds usually involves adding activated alumina to the liquid organic compound. The activated alumina used must not react chemically or catalytically with the organic compound. 2, activated alumina should not dissolve in the liquid organic compound. 3. When selecting activated alumina that combines with water to form hydrates, the water absorption capacity and drying efficiency of activated alumina must be considered. Water absorption capacity refers to the amount of water absorbed per unit weight of activated alumina, and drying efficiency refers to the degree to which the liquid is dried when equilibrium is reached. For example, anhydrous sodium sulfate can form Na2SO4·10H2O, that is, 1gNa2SO4 can absorb more than 1.27g of water, and its water absorption capacity is 1.27, but the water vapor pressure of its hydrate is also larger (255.98Pa at 25°C), so the drying efficiency difference. Calcium chloride can form CaCl2·6H2O, and its water absorption capacity is 0.97. The water vapor pressure of this hydrate is 39.99 Pa at 25°C. So although the water absorption capacity of anhydrous calcium chloride is small, it has strong drying efficiency. Therefore, the appropriate activated alumina should be selected according to the specific requirements of removing moisture during the drying operation. Sometimes for systems with a lot of water, the activated alumina with large water absorption is often used for drying, and then the activated alumina with strong drying efficiency is used. Generally, this kind of activated alumina requires a certain equilibrium time to form hydrates. Therefore, after activated alumina is added, it must be placed for a period of time to achieve the dehydration effect. Activated alumina that has absorbed water will be dehydrated after being heated, and its vapor pressure increases with the increase of temperature. Therefore, the activated alumina must be filtered out before the distillation of the dried liquid.

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Shandong Orvey New Material Technology Co., Ltd. official website will be launched soon!

Shandong Orvey New Material Technology Co., Ltd., located at No. 1, Zhujiang Road, Economic Development Zone, Zhangdian District, Zibo City, is a leading enterprise in new adsorption series products. We are a high-tech enterprise integrating research, development, production and sales. Products are widely used in air separation equipment, large air compressors, defluorinated water plants, urban water supply, drainage, and chemical, metallurgical, electric power, oilfield, Papermaking, industrial sewage treatment and other fields. The company has strong technical force, sophisticated equipment, advanced technology, quality management standards, and strong scientific research and development capabilities. It is an advanced enterprise with diversified innovation and development. Shandong Aowei New Material Technology Co., Ltd. is a company that has developed and produced activated alumina and series products for many years. Over the years, the self-developed and developed product production technology and business management experience, perfect quality control system and environmental awareness have enabled its products to keep up to date with the times and meet market needs, and the company's performance continues to rise. The main products are desiccants, special adsorbents for hydrogen peroxide, sulfur recovery catalysts, desiccants for petrochemicals, polyethylene deashing agents, catalyst carriers for various purposes and hydrogenation catalysts. The product is stable, and the production index conforms to the national industry standard. Among them, polyethylene deashing agent and special adsorbent for hydrogen peroxide fluidized bed process are currently one of the domestic manufacturers. Stable product quality and perfect after-sales service have been recognized and praised by customers at home and abroad. Our company's annual production capacity is more than 10,000 tons. In order to manufacture and provide better products, we continue to raise the requirements for products, in the increasingly fierce market competition, constantly adjust the industrial layout and development strategy, insist on technological innovation to seek breakthroughs, and use product quality to hit the market. The company has successively passed the certification of quality management system, environmental management system, occupational health and safety management system, and the second-level certification of safety production management standardization. We warmly welcome domestic and foreign users to visit our company, and also warmly welcome relevant experts to come to our company for guidance and seek common development.

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What should be paid attention to when selecting activated alumina?

1. Drying of liquid organic compounds usually involves adding activated alumina to the liquid organic compound. The activated alumina used must not react chemically or catalytically with the organic compound. 2, activated alumina should not dissolve in the liquid organic compound. 3. When selecting activated alumina that combines with water to form hydrates, the water absorption capacity and drying efficiency of activated alumina must be considered. Water absorption capacity refers to the amount of water absorbed per unit weight of activated alumina, and drying efficiency refers to the degree to which the liquid is dried when equilibrium is reached. For example, anhydrous sodium sulfate can form Na2SO4·10H2O, that is, 1gNa2SO4 can absorb more than 1.27g of water, and its water absorption capacity is 1.27, but the water vapor pressure of its hydrate is also larger (255.98Pa at 25°C), so the drying efficiency difference. Calcium chloride can form CaCl2·6H2O, and its water absorption capacity is 0.97. The water vapor pressure of this hydrate is 39.99 Pa at 25°C. So although the water absorption capacity of anhydrous calcium chloride is small, it has strong drying efficiency. Therefore, the appropriate activated alumina should be selected according to the specific requirements of removing moisture during the drying operation. Sometimes for systems with a lot of water, the activated alumina with large water absorption is often used for drying, and then the activated alumina with strong drying efficiency is used. Generally, this kind of activated alumina requires a certain equilibrium time to form hydrates. Therefore, after activated alumina is added, it must be placed for a period of time to achieve the dehydration effect. Activated alumina that has absorbed water will be dehydrated after being heated, and its vapor pressure increases with the increase of temperature. Therefore, the activated alumina must be filtered out before the distillation of the dried liquid.

24

2020

/

06

Shandong Orvey New Material Technology Co., Ltd. official website will be launched soon!

Shandong Orvey New Material Technology Co., Ltd., located at No. 1, Zhujiang Road, Economic Development Zone, Zhangdian District, Zibo City, is a leading enterprise in new adsorption series products. We are a high-tech enterprise integrating research, development, production and sales. Products are widely used in air separation equipment, large air compressors, defluorinated water plants, urban water supply, drainage, and chemical, metallurgical, electric power, oilfield, Papermaking, industrial sewage treatment and other fields. The company has strong technical force, sophisticated equipment, advanced technology, quality management standards, and strong scientific research and development capabilities. It is an advanced enterprise with diversified innovation and development. Shandong Aowei New Material Technology Co., Ltd. is a company that has developed and produced activated alumina and series products for many years. Over the years, the self-developed and developed product production technology and business management experience, perfect quality control system and environmental awareness have enabled its products to keep up to date with the times and meet market needs, and the company's performance continues to rise. The main products are desiccants, special adsorbents for hydrogen peroxide, sulfur recovery catalysts, desiccants for petrochemicals, polyethylene deashing agents, catalyst carriers for various purposes and hydrogenation catalysts. The product is stable, and the production index conforms to the national industry standard. Among them, polyethylene deashing agent and special adsorbent for hydrogen peroxide fluidized bed process are currently one of the domestic manufacturers. Stable product quality and perfect after-sales service have been recognized and praised by customers at home and abroad. Our company's annual production capacity is more than 10,000 tons. In order to manufacture and provide better products, we continue to raise the requirements for products, in the increasingly fierce market competition, constantly adjust the industrial layout and development strategy, insist on technological innovation to seek breakthroughs, and use product quality to hit the market. The company has successively passed the certification of quality management system, environmental management system, occupational health and safety management system, and the second-level certification of safety production management standardization. We warmly welcome domestic and foreign users to visit our company, and also warmly welcome relevant experts to come to our company for guidance and seek common development.

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2020

/

07

< 12 >