Abstract
The paper deals with the problem of classification of bulk material, based on silica gel, larger than 30 µm, from dusty gas flow. In order to solve this problem, the design of a classifier with coaxially arranged pipes is proposed. According to the conducted studies, it is more efficient to use a classifier with an inner conical pipe to solve the problems of separating the particles from the gas flows of various sizes, since a greater value is achieved for the centrifugal, inertial, gravitational and other forces acting on the dusty flow, that contribute to knocking the particles out of its structure, than in a classifier with a cylindrical inner pipe. On average, the efficiency of a classifier with a conical inner pipe is by 35.3% higher than that of a classifier with a cylindrical inner pipe. Classification of particles of bulk material, based on silica gel, larger than 30 µm from the dusty gas flows is solved most effectively by using a classifier with a conical inner pipe and hd parameter of 50 mm and a classifier with a cylindrical inner pipe and hd parameter of –10 mm.
Highlights
The cyclones are mainly used for separating the dust particles larger than [10-20] μm from the gas flows
The aim of this research paper is to develop a classifier for fractionation of bulk material, based on silica gel, larger than 30 μm, from the gas flow in the technological production line at the Salavatsky catalyst plant
The authors of this research paper developed a design of classifier with coaxially arranged pipes (Figure 1), which is proposed to be used for fractionation of particles from the gas flows, larger than 30 μm
Summary
The mills are used for crushing out the bulk material, resulting in the formation of particles with a large size range. The aim of this research paper is to develop a classifier for fractionation of bulk material, based on silica gel, larger than 30 μm, from the gas flow in the technological production line at the Salavatsky catalyst plant. In this case, the volume fraction of the collected material smaller than 30 μm shall not exceed 2% of the total fraction of the collected material. It should be noted that most of classic coarse cleaning devices (cyclones, louver dust collectors, etc.) cannot be used to solve this problem The efficiency of these devices for collecting the particles smaller than 30 μm significantly exceeds 2% of the total collected fraction [7–11]
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