Energy-saving and efficient solid catalyst atomizing and drying system

Abstract

The invention relates to an energy-saving and efficient solid catalyst atomizing and drying system. The energy-saving and efficient solid catalyst atomizing and drying system comprises a drying tower of a vertical cylindrical structure, an electric high-speed centrifugal atomizer, a feeding device, a heating device, an air wet cooling device, a discharging device, a waste gas recycling and utilizing device, a cleaning device, and an intelligent control cabinet, wherein the electric high-speed centrifugal atomizer is mounted on a central axis in the top end of the drying tower; the feeding device is connected to a material inlet of the drying tower; an air filter is arranged at the front end of the heating device; the discharging device is arranged at the bottom of the drying tower; a refrigeration dehumidifier is arranged at the front end of the air wet cooling device; the waste gas recycling and utilizing device delivers waste gas to the periphery outside the tower body of the drying tower through a waste gas recycling tower; the intelligent control cabinet can centrally automatically control the overall working process of the system. The overall system is convenient to control and manage and high in drying efficiency, has a good energy saving effect, and prevents the waste gas from polluting atmospheric environment.

Description

technical field [0001] The invention relates to a drying and granulation system, in particular to an energy-saving and high-efficiency centrifugal spray drying and granulation system for the dry production of solid catalysts. Background technique [0002] Catalysts play an irreplaceable role in the modern chemical industry, and about 80% of chemical reactions are related to the presence of catalysts. Most of the existing solid catalysts are nano-scale or micron-scale particle powders. There is interfacial tension between the particles and the solution, which is prone to particle aggregation, resulting in low catalytic activity and unsatisfactory catalytic effect. Therefore, in the process of preparing catalyst powder, drying is an extremely critical process. Spray drying is the most common drying technology for drying liquid into powder products in the chemical industry. Its working principle is: spray the material into droplets by spraying and disperse them in hot air, and...

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Problems solved by technology

With this drying method, unit operations such as concentration, filtration, and crushing can be omitted, and the drying time is short (generally, the drying time is 5-30s), and there is little damage to the active ingredients of the dried material, so it is especially suitable for drying solid catalysts. and granulation molding, but in the process of spray drying in the existing catalyst drying device, the phenomenon that the dried material often sticks to the inner wall of the drying tower, because it is difficult for the sticky wall material to be taken out of the drying tower in time, resulting in The burning or deterioration of the sticky material affects the quality of the catalyst powder; and the exhaust gas generated during the drying process is discharged directly. Since there are micro-material powders that have not been fully separated in the exhaust gas, the exhaust gas is directly discharged into the atmosphere, which is harmful to the surrounding environment. impact, but also waste the heat energy contained in the exhaust gas

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