A solid catalyst atomization drying system that is easy to clean

Abstract

The invention relates to a solid catalyst atomization and drying system that is easy to clean, comprising a drying tower with a vertical cylindrical structure, an electric high-speed centrifugal atomizer, a feeding device, a heating device, a rheumatic cooling device, a discharging device, and waste gas recovery and utilization device, cleaning device and intelligent control cabinet, the electric high-speed centrifugal atomizer is installed on the inner central axis of the top of the drying tower, the feeding device is connected to the feeding port of the drying tower, and the front end of the heating device is equipped with an air filter. The material device is installed at the bottom of the drying tower, and the front end of the rheumatic cooling device is equipped with a refrigerated dehumidifier. The waste gas recycling device sends the waste gas to the outside of the drying tower through the waste gas recovery tower. The cleaning device includes a clean water tank and a rotary cleaning device. Intelligent control The cabinet performs centralized automatic control on the entire working process of the system. The control and management of the whole system are convenient, the drying efficiency is high, the energy saving effect is good, and the pollution of the air environment by the waste gas is avoided.

Description

technical field [0001] 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 [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, a...

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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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