What common problems may occur during the pneumatic conveying process? How to prevent it
We are dealing with materialspneumatic conveyingCommon pneumatic conveying systems used in the process include,Dilute phase pneumatic conveying(Positive/Negative Pressure Pneumatic Conveying),Dense phase pneumatic conveyingWait, these types of pneumatic conveying involve materials being transported in sealed pipelines through various conveying equipment to their destination. During the conveying process, various conveying problems will definitely be encountered,
What common problems may occur during the pneumatic conveying process? How to prevent it?
Pipeline blockage is one of the most common and difficult to handle faults in pneumatic conveying systems, accounting for over 40% of the failure rate of pneumatic conveying systems. Especially at the connection between the horizontal and vertical sections of the conveying pipeline, blockage is more severe. Due to the long and elevated pipeline, maintenance is very difficult.
Common component wear, such as a failure rate of over 40% in the outlet pipe of the bin pump. Especially in pipelines where valves are severely worn and damaged, the maintenance workload is heavy. The rotating feeding valve under the buffer compartment wears out quickly and causes severe powder leakage.
The pneumatic conveying system has a long discharge time, and powder blockage occurs during the operation of the powder storage bin, causing difficulties in discharging.
The output of the pneumatic conveying system is too small or insufficient to meet the requirements of pneumatic ash removal in large facilities such as thermal power plants.
Dense phase pneumatic conveying is a complex motion process of gas-solid two-phase flow. At present, the determination of parameters for the pneumatic conveying system of dense phase bin pumps is still based on the calculation method of suspended dilute phase positive pressure pneumatic conveying. Important parameters still rely on empirical selection, and the calculation results have large errors, which makes engineering design and operation management uncertain. The key factors affecting dense phase pneumatic conveying are energy consumption and stability, which need to be considered during parameter design and equipment selection. The quality of compressed air source refers to the pressure and purification level of the compressed air source. The minimum pressure of compressed air required for pneumatic conveying is 0.55 MPa. During the material conveying process by the bin pump, if the pressure is lower than 0.55 MPa, the conveying pipeline is prone to blockage, the bin pump cannot deliver the material, or the conveying time becomes longer. The purification degree of compressed air source has a significant impact on pneumatic conveying. If the compressed air source is not fully purified, it will contain a large amount of water and oil. When oil and water come into contact with powder materials, they will adhere to the gasification disc of the bin pump, affecting the flow pattern and material fluidization inside the bin pump, reducing the conveying efficiency of the bin pump, and thus affecting the smooth conveying of the system.
The main issue with dilute phase pneumatic conveying is the material dropping problem of the conveying equipment. Sometimes, the specific gravity, shape, size, flowability, and moisture content of the material can directly affect the feeding situation of the conveying equipment. When selecting equipment, it is important to confirm the characteristics of the conveyed material. Regardless of any type of overall conveying method, selection is definitely the most crucial. Air volume, pressure, power, and so on must be matched according to the characteristics of the material in order to select the appropriate equipment model and make the correct conveying plan,Shandong Juheng Environmental Protection Equipment Co., LtdSpecializing in the pneumatic conveying industry for 13 years, with a solid technical team and rich experience in installation and commissioning, as well as the ability to handle turnkey projects. For more information, please feel free to consult Shandong Juheng Environmental Protection Equipment Co., Ltd.
The main issue with dilute phase pneumatic conveying is the material dropping problem of the conveying equipment. Sometimes, the specific gravity, shape, size, flowability, and moisture content of the material can directly affect the feeding situation of the conveying equipment. When selecting equipment, it is important to confirm the characteristics of the conveyed material. Regardless of any type of overall conveying method, selection is definitely the most crucial. Air volume, pressure, power, and so on must be matched according to the characteristics of the material in order to select the appropriate equipment model and make the correct conveying plan,Shandong Juheng Environmental Protection Equipment Co., LtdSpecializing in the pneumatic conveying industry for 13 years, with a solid technical team and rich experience in installation and commissioning, as well as the ability to handle turnkey projects. For more information, please feel free to consult Shandong Juheng Environmental Protection Equipment Co., Ltd.