What are the advantages and disadvantages of pneumatic conveying roots blower?

The roots blower for pneumatic conveying is improved and designed on the basis of similar products imported from abroad in the 1980s. Because of its simple operation, excellent performance and excellent manufacturing, the pneumatic conveying roots blower is favored by users in the pharmaceutical and food fields, especially meeting the GMP requirements of the pharmaceutical and food industries. This equipment is especially suitable for the transportation and granulation of Chinese and western medicines and food. The prepared particles have strong disintegration, good fluidity and good instantaneous solubility. It can be directly used for tablet pressing, capsule filling, granules and solid drinks.

The pneumatic conveying roots blower system is mainly composed of air heating system, feed liquid conveying system, atomizer, conveying system, gas-solid separation and acquisition system, control system, media circulation mechanism with special requirements, etc. The pneumatic conveying roots blower is also a widely used conveying method, However, any system equipment has its advantages and disadvantages, pneumatic conveying roots blower is no exception.

Advantages of pneumatic conveying roots blower:

1. Due to the large surface area of the droplets, the conveying time of materials is very short.

2. In the high-temperature airflow, the temperature of materials wetted on the surface of the pneumatic conveying roots blower shall not exceed the wet ball temperature of the conveying medium. Due to the fast transportation speed, the product temperature is not high. Therefore, spray drying is particularly suitable for heat sensitive materials.

3. The pneumatic conveying roots blower has high production efficiency and few operators. Large production capacity and high product quality. The spraying amount per hour can reach hundreds of tons, which is a kind of conveyor with large processing capacity.

4. The pneumatic conveying Roots blower is flexible in operation and can meet the quality index, biological activity and water content of various products, such as particle size distribution, product shape, product performance (excluding dust, fluidity, wettability and instant solubility), product color, fragrance, taste, etc.

5. Simplify the process flow. The solution can be directly made into powder products in the transport tower. In addition, the pneumatic conveying roots blower is easy to be mechanized and automated to reduce dust flying and improve the working environment.

Disadvantages of pneumatic conveying roots blower:

1. When the air temperature is lower than 150, the volume heat transfer coefficient of the pneumatic conveying roots blower is low and the equipment consumption is large.

2. The separation requirements of gas-solid mixture are high, generally requiring two-stage dedusting.

3. The thermal efficiency is not high. Generally, the downstream tower type is 30%~50%, and the counter current tower type is 50%~75%

4. The pneumatic conveying Roots blower is complex, covers a large area, and has large one-time investment.

5. The price of atomizer and powder recovery device is high.

6. More air is needed to increase the power consumption of the fan and the capacity of the recovery device.