Precautions for pneumatic conveying of chemical materials
? ?Most of the raw materials, semi-finished products, and products in the chemical industry are powdery materials, viscous materials, hot materials, etc. With the automation of the production process, fully sealed pneumatic conveying is the most ideal material transportation equipment.
? ?For pneumatic conveying of chemical raw materials, it is necessary to understand the physical and chemical properties of the conveyed material, andpneumatic conveyingBefore determining whether pneumatic conveying can be used, the basic technical parameters and system layout of the equipment can only be determined by understanding the working conditions set by the factory, as well as the equipment and its performance.
? ?The use of pneumatic conveying in the chemical industry has many advantages. The continuous performance of production simplifies the management of auxiliary equipment, the flexible layout of pipelines facilitates the arbitrary configuration of various equipment, and prevents the mixing and scattering of debris; It can meet various process requirements, such as mixing, grading, cooling, dust removal, etc; Not occupying a large amount of workshop area and space; Realize centralized automatic control, monitoring, and detection of the production process.
Precautions for pneumatic conveying of chemical materials:
1) Prevent impurities from contaminating materials in the pneumatic conveying system. Air purification is required, and the water, oil, and dust content in compressed air must be controlled within a certain range.
2) To prevent the mixing of rust and iron, a magnetic iron remover should be installed at the material inlet. The feeding pipe is made of stainless steel or aluminum, and ordinary steel pipes selected under process conditions must undergo surface rust removal treatment.
3) Prevent crushing, wear, and deformation during material transportation. The selection of pneumatic conveying should adopt low-pressure low-speed dense phase conveying as much as possible to ensure the performance of the material.
4) To ensure the safety of transporting flammable and explosive materials, it is advisable to use inert gas circulation transportation. For materials with strong moisture absorption, freeze dryers and air filters can be used, and the air source can be treated before use.
5) For materials and chemicals with static electricity, attention must be paid to the pneumatic conveying components during installation. The conveying pipe, storage hopper, dust collector, etc. must be grounded, and the filter material of the dust collector must use anti-static materials and corresponding measures.