Convenient-to-clean solid catalyst atomization drying system

Abstract

The invention relates to a convenient-to-clean solid catalyst atomization drying system which comprises a drying tower of a vertical cylindrical structure, an electric high-speed centrifugal atomizer, a feeding device, a heating device, an air moisture cooling device, a discharging device, a waste gas recovery device, a cleaning device and an intelligent control cabinet, wherein the electric high-speed centrifugal atomizer is arranged on the inner central axial line at the top of the drying tower; the feeding device is connected to a feed opening in 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 moisture cooling device; the waste gas recovery device is used for delivering waste gas to the periphery of the outer side of a tower body of the drying tower through a waste gas recovery tower; the cleaning device comprises a clear water tank and a rotating cleaning device; the intelligent control cabinet is used for automatically controlling the whole working process of the system in a centralized way. The whole system is convenient to control and manage and high in drying efficiency, and has good energy-saving effects, and the pollution to the atmospheric environment caused by the waste gas is avoided.

Description

[0001] technical field [0002] The invention relates to a drying and granulating system, in particular to a centrifugal spray drying and granulating system which is convenient for cleaning and used for dry production of solid catalyst. Background technique [0003] 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 h...

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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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