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White carbon black spray drying tower
White carbon black is the general term of white powder X-ray amorphous silicic acid and silicate products, mainly referring to precipitated silica, fu
Product details
Material Description:
White carbon black is the general term of white powder X-ray amorphous silicic acid and silicate products, mainly referring to precipitated silica, fumed silica and ultra-fine silica gel, as well as powder synthetic aluminum silicate and calcium silicate. White carbon black is a porous substance, and its composition can be represented by SiO2 · nH2O, where nH2O exists in the form of surface hydroxyl groups.
This device has:
Spray drying is the most widely used process in liquid forming and drying industries. It is most suitable for generating powder and granular solid products from solution, lotion, suspension and paste liquid raw materials. Therefore, spray drying is a very ideal process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet accurate standards.
working principle:
1. Based on our experimental experience, in the design process of the main tower: 1. Strictly calculate the atomization spray distance of the atomizer, and reasonably enlarge the diameter of the main tower to prevent the material from sticking to the wall during the pre drying process; 2. The reasonable height diameter ratio of the main tower straight cylinder is designed to ensure sufficient residence time of materials and ensure the spray drying effect. 3. The taper of the tower cone has been adjusted from the conventional angle of 60 ° to 55 °, fully considering the smoothness of material feeding in the cone.
2. The atomizer adopts a frequency converter to adjust the speed of the atomizer to achieve the best atomization effect. Lower the base of the atomizer and increase the distance between the atomizer disc and the top of the tower, so that the atomized droplets cannot return to the top under the spinning of the wind, to ensure the normal operation of the system. Driven by a high-speed motor, the spindle is accelerated to 15000-16000R through a gearbox P.M， Make the line speed of the atomization disc reach up to 130m/min, ensuring the atomization effect. Equipped with oil pressure digital automatic detection safety protection device, the spindle is equipped with water-cooled oil cooling device to ensure that the spindle is not deformed by high temperature. According to the requirements of finished particles, the hole shape of the atomizing disc can be selected as circular hole, square hole or diamond hole.
3. The pneumatic striking hammer adopts a new product with polytetrafluoroethylene head using Japanese fresh technology, which can ensure the vibration effect, reduce the noise of the product during striking, and achieve reasonable distribution.
4. Designed one set of lighting fixtures, one observation and cleaning door, and a manhole inside the tower.
2. The atomizer adopts a frequency converter to adjust the speed of the atomizer to achieve the best atomization effect. Lower the base of the atomizer and increase the distance between the atomizer disc and the top of the tower, so that the atomized droplets cannot return to the top under the spinning of the wind, to ensure the normal operation of the system. Driven by a high-speed motor, the spindle is accelerated to 15000-16000R through a gearbox P.M， Make the line speed of the atomization disc reach up to 130m/min, ensuring the atomization effect. Equipped with oil pressure digital automatic detection safety protection device, the spindle is equipped with water-cooled oil cooling device to ensure that the spindle is not deformed by high temperature. According to the requirements of finished particles, the hole shape of the atomizing disc can be selected as circular hole, square hole or diamond hole.
3. The pneumatic striking hammer adopts a new product with polytetrafluoroethylene head using Japanese fresh technology, which can ensure the vibration effect, reduce the noise of the product during striking, and achieve reasonable distribution.
4. Designed one set of lighting fixtures, one observation and cleaning door, and a manhole inside the tower.
5. The hot air vortex shell of the main tower adopts an accelerated structure, which effectively compresses the material when the hot air enters the tower, and the orderly vortex descends. The hot air distributor also combines the characteristics and requirements of this technology, achieving air guiding mechanisms on both sides of the distributor and adjustable angles to control the tangential angle of hot air entering the tower.
advantage:
1. After being filtered by primary, medium, and high-efficiency filters, the fresh air can ensure a purification level of up to 300000.
2. The drying tower system has adjusted the height to diameter ratio of the main tower's straight cylinder; Extend the residence time of materials to ensure drying efficiency.
3. The taper of the tower cone has been adjusted from the conventional angle of 60 ° to around 54 °, fully considering the smoothness of material feeding in the cone.
4. The tower top is equipped with a cooling system and a jacket cooling system. In order to prevent the temperature at the top of the tower and the inner wall of the cone from being too high, and to prevent the material adsorbed on the cone wall from being coked by high temperature, which will affect the quality.
5. Application of freezing dehumidification and centralized material collection system
This system uses filtered fresh air that quickly becomes dry and has a low temperature after passing through a freeze dehumidifier. It forces the materials discharged from the main tower and cyclone to be cooled in a timely manner and transported to the clean powder collection room. It has two functions: ① the materials are quickly cooled to prevent moisture from returning during the natural cooling process. ② Centralized clean collection, in compliance with hygiene requirements.
6. The control system adopts color touch screen animation to display the process flow, control the setting of relevant parameters, PLC programmable pre-set process flow, and animation display. Fuzzy technology is used to automatically track and control variable parameters to achieve the best effect.
7. All process pipelines adopt a smooth conveying form to avoid material blockage caused by bent pipes.
8. Rotary cutting air intake technology and adjustable volute shell ensure uniform material distribution and prevent backflow.
9. Matching the online cleaning system reduces labor intensity and improves the control level of the unit.
2. The drying tower system has adjusted the height to diameter ratio of the main tower's straight cylinder; Extend the residence time of materials to ensure drying efficiency.
3. The taper of the tower cone has been adjusted from the conventional angle of 60 ° to around 54 °, fully considering the smoothness of material feeding in the cone.
4. The tower top is equipped with a cooling system and a jacket cooling system. In order to prevent the temperature at the top of the tower and the inner wall of the cone from being too high, and to prevent the material adsorbed on the cone wall from being coked by high temperature, which will affect the quality.
5. Application of freezing dehumidification and centralized material collection system
This system uses filtered fresh air that quickly becomes dry and has a low temperature after passing through a freeze dehumidifier. It forces the materials discharged from the main tower and cyclone to be cooled in a timely manner and transported to the clean powder collection room. It has two functions: ① the materials are quickly cooled to prevent moisture from returning during the natural cooling process. ② Centralized clean collection, in compliance with hygiene requirements.
6. The control system adopts color touch screen animation to display the process flow, control the setting of relevant parameters, PLC programmable pre-set process flow, and animation display. Fuzzy technology is used to automatically track and control variable parameters to achieve the best effect.
7. All process pipelines adopt a smooth conveying form to avoid material blockage caused by bent pipes.
8. Rotary cutting air intake technology and adjustable volute shell ensure uniform material distribution and prevent backflow.
9. Matching the online cleaning system reduces labor intensity and improves the control level of the unit.
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