Hollow blade dryer for desulfurization gypsum

Published on April 15th, 2016

Flue gas gypsum dryer, flue gas gypsum drying equipment, flue gas gypsum dryer, flue gas gypsum drying equipment, flue gas gypsum hollow blade dryer. Changzhou Xinke Drying Equipment Co., Ltd. www.xkdry.com

1、 Process conditions:

1. Material: desulfurization gypsum

2. Initial moisture content: 20%

3. Final moisture content: 10%

4. Wet product processing capacity: 30 T/h

5. Dry product stacking density:~2.0 g/cm3

6. Drying temperature: 160 ℃

7. Feed temperature: 20 ℃

8. Discharge temperature:~90 ℃

9. Heating method: Steam 5-8 kgf/cm2

10. Equipment material: The material contact part is made of 304 stainless steel, while the rest is made of A3 steel

11. Installation: Indoor

12. Power supply: 380V 50HZ three-phase four wire

13. Environment: 20 ℃ 760mmHg Relative humidity: φ=80%

2、 Process Calculation

1. Wet product processing capacity at 20% per hour:

G humidity=30000 kg/h

2. Hourly water evaporation rate:

W water=3334 kg/h

3. 10% dry product output per hour:

G_shield= 26 666 kg/h

3、 Equipment selection

According to the material drying requirements, it is proposed to select 4 KJG-110 hollow blade dryers to meet the production requirements

（1） Working principle:

Wedge shaped hollow blades are densely arranged on the hollow shaft, and the heat medium steam flows through the blades through the hollow shaft, with a large heat transfer area per unit effective volume. The heat transfer medium flows through the shell jacket and hollow stirring shaft through the rotary joint. The hollow stirring shaft has different internal structures according to the type of heat medium to ensure the best heat transfer effect.

At the same time as the blade and jacket are heated by the heat medium, the upper part of the discharge port is simultaneously dehumidified, greatly increasing the drying intensity of the equipment. The evaporated water is carried out of the dryer by the dehumidification fan.

（2） Equipment characteristics:

1. The blade dryer has low energy consumption: due to indirect heating, it does not carry a large amount of air to take away heat, and the outer wall of the dryer is also equipped with insulation layer, so the heat loss is very small.

2. The blade dryer system has low cost: it has a huge heat transfer surface per unit effective volume, which shortens the processing time. The device size has decreased, reducing the footprint.

3. Wide range of material processing: Using different heat media, it can handle both thermosensitive materials and materials that require high-temperature treatment.

4．Low environmental pollution: carrying very little air and carrying very little dust material.

5．Low operating costs.

6．Stable operation: Due to the special compression expansion stirring effect of the wedge-shaped blade, the material particles are fully in contact with the heat transfer area. In the axial range, the temperature, humidity, mixing temperature, and gradient of the material are very small, thereby ensuring the stability of the process.

Changzhou Xinke Drying Equipment Co., Ltd. specializes in the production of hollow paddle dryers, sludge dryers, disc dryers, disc dryers, airflow dryers, belt dryers, boiling dryers, spray dryers, flash dryers, vacuum dryers, vibration fluidized bed dryers. www.xkdry.com