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The official website of Shandong Aowei New Material Technology Co., Ltd. will be launched soon!

The official website of Shandong Aowei New Material Technology Co., Ltd. will be launched soon!

Shandong Aowei New Material Technology Co., Ltd., located at No. 1 Zhujiang Road, Economic Development Zone, Zhangdian District, Zibo City, is a leading enterprise of new adsorption series products. We are a high-tech enterprise integrating research, development, production and sales. Our products are widely used in air separation equipment, large air compressors, defluorination water plants, urban water supply, drainage and chemical, metallurgy, electric power, oil fields, Papermaking, industrial sewage treatment and other fields. The company has strong technical force, sophisticated equipment, advanced technology, standardized quality management, and strong scientific research and development capabilities. It is an advanced enterprise with diversified innovation and development.

19

2022

/

09

The service life of activated alumina

The service life of activated alumina

The service life (shelf life) of activated alumina desiccant varies from 2 to 6 years according to the temperature of the intake air. It can be judged whether a desiccant is needed according to the filter behind the dryer. If the filter is drained, it needs to be replaced with activated alumina desiccant immediately, which can also be judged according to the form of the desiccant and the actual situation of the gas end.

19

2022

/

09

Activated alumina defluorination regeneration wastewater treatment method

At present, the main methods for removing fluoride from fluorine-containing water include adsorption, electrocoagulation, reverse osmosis, ion exchange, chemical precipitation, and coagulation sedimentation. Among these methods. In the process of fluorine removal by adsorption method, when the adsorbent reaches saturation, it needs to be regenerated to restore its adsorption capacity. At present, the commonly used adsorbent is the activated alumina adsorption method. The following describes the treatment method of activated alumina defluoridation regeneration wastewater: When the activated alumina adsorption reaches saturation, it needs to be regenerated. It can be regenerated with aluminum sulfate or sodium hydroxide. There will be high concentration of fluorine-containing wastewater during the regeneration of activated alumina. The average content is about F-1000mg/L. According to the "Integrated Wastewater Discharge Standard" (GB8978-1996), F- is 10mg/L, so it must be discharged after special treatment reaches the standard. The basic conditions of the activated alumina regeneration wastewater treatment process test: the external dimension of the test device is Φl60mmx3000mm, the internal activated alumina is 30L, and the filling height is 2000mm; the regeneration method uses 1 times 3% NaOH solution to rinse for 2 hours, and then 5 times of clean water to rinse 1.5 h, then neutralize with 1 times 1% H2S04 solution for 1.5 hours, wash with 2 times clear water for 0.5 hours until the effluent pH value is 6-7; the regeneration flow rate is 60L/h. It has been verified by practice that the current good treatment method for activated alumina defluoridation regeneration wastewater is: the three-stage chemical coagulation sedimentation method using CaCl2+PAC+PAM is an effective and applicable process for treating high-content fluorine-containing wastewater, which can stably achieve First level discharge standard of comprehensive sewage discharge standard

19

2020

/

06

Introduction of activated alumina seed crystals

1. Control factors affecting the decomposition quality of seed crystals. The quality and quantity of active seed crystals are one of the important factors affecting the particle size and decomposition rate of activated alumina regenerant. Second, the activity of the activated alumina regeneration agent seed crystal mainly depends on the preparation method and conditions of the seed crystal, storage time, the structure of the seed and the particle size of the seed crystal and other factors. 3. Coarse wet grinding with activated alumina regeneration agent is used. In order to ensure the activity of the seed crystals, the storage time of the seed crystal slurry in the storage tank is generally not more than 3 days. Activated alumina has better quality due to the fact that the particles of the activated alumina regenerant after grinding become extremely fine, which improves the dispersibility and activity, and thus obtains a special crystal with an average particle size of less than 110μm, good dispersibility, high activity, and appropriate moisture. Seed slurry, for adding when the seed crystal is decomposed.

20

2020

/

06

The relationship between activated alumina carrier and calcination temperature

Activated alumina carrier is widely used in actual industrial production. Among them, activated alumina is an inorganic substance with excellent performance. It can not only be used as dehydration adsorbent, chromatography adsorbent, but also as a carrier, active oxidation The aluminum carrier is widely used in the petrochemical field. It involves various reactions such as reforming, hydrogenation, dehydrogenation, dehydration, etc. What is the relationship between the activated alumina carrier and the roasting temperature? The following is a detailed introduction: The use of hydrothermal treatment and the addition of pore expanders can effectively control the pore structure of the activated alumina carrier, but after forming, the baking process is also one of the important factors affecting the pore structure. Roasting includes processes such as dehydration, dehydroxylation, particle sintering, decomposition or removal of volatile substances, and burning of organic matter. These processes all affect the pore structure of the activated alumina carrier. With the increase of the calcination temperature, the average pore diameter gradually increases. For every 100°C increase in temperature, the proportion of pores larger than 20nm increases by about 5%; the corresponding specific surface area gradually decreases. The increase in the overall pore diameter of activated alumina is mainly caused by the collapse of smaller pores at high temperature to form larger pores. With the increase of the calcination temperature, the content of activated alumina increases, and the specific surface area and pore volume decrease. When the temperature is higher than 450°C, the content remains basically unchanged, while the specific surface area and pore volume still show a downward trend. Activated alumina with high specific surface area and large pore volume can be obtained when the calcination temperature is 450°C. In addition, proper adjustment of the heating rate can completely remove the water in the pores of activated alumina, thereby eliminating agglomeration and fracture.

21

2020

/

06

< 12 >

The official website of Shandong Aowei New Material Technology Co., Ltd. will be launched soon!

Shandong Aowei New Material Technology Co., Ltd., located at No. 1 Zhujiang Road, Economic Development Zone, Zhangdian District, Zibo City, is a leading enterprise of new adsorption series products. We are a high-tech enterprise integrating research, development, production and sales. Our products are widely used in air separation equipment, large air compressors, defluorination water plants, urban water supply, drainage and chemical, metallurgy, electric power, oil fields, Papermaking, industrial sewage treatment and other fields. The company has strong technical force, sophisticated equipment, advanced technology, standardized quality management, and strong scientific research and development capabilities. It is an advanced enterprise with diversified innovation and development.

19

2022

/

09

The service life of activated alumina

The service life (shelf life) of activated alumina desiccant varies from 2 to 6 years according to the temperature of the intake air. It can be judged whether a desiccant is needed according to the filter behind the dryer. If the filter is drained, it needs to be replaced with activated alumina desiccant immediately, which can also be judged according to the form of the desiccant and the actual situation of the gas end.

19

2022

/

09

Activated alumina defluorination regeneration wastewater treatment method

At present, the main methods for removing fluoride from fluorine-containing water include adsorption, electrocoagulation, reverse osmosis, ion exchange, chemical precipitation, and coagulation sedimentation. Among these methods. In the process of fluorine removal by adsorption method, when the adsorbent reaches saturation, it needs to be regenerated to restore its adsorption capacity. At present, the commonly used adsorbent is the activated alumina adsorption method. The following describes the treatment method of activated alumina defluoridation regeneration wastewater: When the activated alumina adsorption reaches saturation, it needs to be regenerated. It can be regenerated with aluminum sulfate or sodium hydroxide. There will be high concentration of fluorine-containing wastewater during the regeneration of activated alumina. The average content is about F-1000mg/L. According to the "Integrated Wastewater Discharge Standard" (GB8978-1996), F- is 10mg/L, so it must be discharged after special treatment reaches the standard. The basic conditions of the activated alumina regeneration wastewater treatment process test: the external dimension of the test device is Φl60mmx3000mm, the internal activated alumina is 30L, and the filling height is 2000mm; the regeneration method uses 1 times 3% NaOH solution to rinse for 2 hours, and then 5 times of clean water to rinse 1.5 h, then neutralize with 1 times 1% H2S04 solution for 1.5 hours, wash with 2 times clear water for 0.5 hours until the effluent pH value is 6-7; the regeneration flow rate is 60L/h. It has been verified by practice that the current good treatment method for activated alumina defluoridation regeneration wastewater is: the three-stage chemical coagulation sedimentation method using CaCl2+PAC+PAM is an effective and applicable process for treating high-content fluorine-containing wastewater, which can stably achieve First level discharge standard of comprehensive sewage discharge standard

19

2020

/

06

Introduction of activated alumina seed crystals

1. Control factors affecting the decomposition quality of seed crystals. The quality and quantity of active seed crystals are one of the important factors affecting the particle size and decomposition rate of activated alumina regenerant. Second, the activity of the activated alumina regeneration agent seed crystal mainly depends on the preparation method and conditions of the seed crystal, storage time, the structure of the seed and the particle size of the seed crystal and other factors. 3. Coarse wet grinding with activated alumina regeneration agent is used. In order to ensure the activity of the seed crystals, the storage time of the seed crystal slurry in the storage tank is generally not more than 3 days. Activated alumina has better quality due to the fact that the particles of the activated alumina regenerant after grinding become extremely fine, which improves the dispersibility and activity, and thus obtains a special crystal with an average particle size of less than 110μm, good dispersibility, high activity, and appropriate moisture. Seed slurry, for adding when the seed crystal is decomposed.

20

2020

/

06

The relationship between activated alumina carrier and calcination temperature

Activated alumina carrier is widely used in actual industrial production. Among them, activated alumina is an inorganic substance with excellent performance. It can not only be used as dehydration adsorbent, chromatography adsorbent, but also as a carrier, active oxidation The aluminum carrier is widely used in the petrochemical field. It involves various reactions such as reforming, hydrogenation, dehydrogenation, dehydration, etc. What is the relationship between the activated alumina carrier and the roasting temperature? The following is a detailed introduction: The use of hydrothermal treatment and the addition of pore expanders can effectively control the pore structure of the activated alumina carrier, but after forming, the baking process is also one of the important factors affecting the pore structure. Roasting includes processes such as dehydration, dehydroxylation, particle sintering, decomposition or removal of volatile substances, and burning of organic matter. These processes all affect the pore structure of the activated alumina carrier. With the increase of the calcination temperature, the average pore diameter gradually increases. For every 100°C increase in temperature, the proportion of pores larger than 20nm increases by about 5%; the corresponding specific surface area gradually decreases. The increase in the overall pore diameter of activated alumina is mainly caused by the collapse of smaller pores at high temperature to form larger pores. With the increase of the calcination temperature, the content of activated alumina increases, and the specific surface area and pore volume decrease. When the temperature is higher than 450°C, the content remains basically unchanged, while the specific surface area and pore volume still show a downward trend. Activated alumina with high specific surface area and large pore volume can be obtained when the calcination temperature is 450°C. In addition, proper adjustment of the heating rate can completely remove the water in the pores of activated alumina, thereby eliminating agglomeration and fracture.

21

2020

/

06

< 12 >
Shandong Orvey New Material Technology Co., Ltd.

CONTACT US

 

Add: No. 1, Zhujiang Road, Economic Development Zone, Zhangdian District, Zibo City, Shandong Province
Phone: +86-533-2886234 / +86-533-3080282
Mobile: +86-13678639999 (Mr. Li)
E-mail: sales@sdawxcl.cn

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