Spray Dryer Optimization

The question is often asked, [How can more capacity be gotten from our Spray Dryer?" Or, [What is the greatest amount of powder that this dryer can produce?" Optimization of a spray dryer most often means greater capacity, greater energy efficiency, and lower manpower input. Optimization is a complex and multifaceted goal that is best looked at in three ways. First, one can address the question from the standpoint of maximizing any single hour of production-that is, by maximizing inlet temperature, outlet temperature, feed temperature, feed solids, etc. This procedure

can be both theoretical and scientific.

The second way to address the problem is on a monthly basis. In a 30-day month, there are 720 hours during which a dryer can run. How many hours per month is it in fact running? How many hours per month are lost to clean in place (CIP)?

How many hours are lost to process-related problems such a plugging, build-up, etc.? In many cases, more production can be achieved by reducing downtime than by trying to operate each production hour close to the theoretical maximum.

The third, and often overlooked, approach is to maximize dryer production on an annual basis based on changes in ambient conditions. Spray Dryers almost always run better in winter than in summer.

This has to do with the amount of moisture in the ambient air.

When the moisture in the ambient air is higher, less water can be evaporated in thespray-drying process.Because each optimization procedure has unique requirements, it is difficult to give one-size-fits-all answers. But if an operation is analyzed critically, if the right questions are asked and if clear methods are applied to find solutions, operations can be improved.

The Hollow Paddle Dryer is a high efficiency and energy saving dryer. It can handle powders, paste or slurry. It has large heat conduction area which can remove the water quickly.

Adopting saturated steam, hot water or heat conducting oil as the heating medium, the paddle dryer is an indirect-heating and low-speed stirring drying equipment, and both the continuous and intermittent operations can be carried through. It can be used for product cooling with the usage of cooling medium.The paddle dryer is mainly used for the drying or cooling of powder, granular, cake-shaped, paste and the slurry-like materials.

1. The cost of the blade dryer is low: The unit effective volume has very large heat transferring surface, so the processing time is shorted, the size of the equipment becomes small. The building area and place are sharply decreased.

2. The range of material to be processed is wide: Heat sensitive material and the materials to be processed under high temperature might be processed with different heating media. The normal media are: steam, thermal oil, hot water and chill water. It might be continuous or batch operation, widely used in many areas.

3. The pollution is less: Without any carrying air, very little powder is carried out. The solvent evaporated is very few, it easy to be processed. For the material that might cause pollution or the solvent to be recovered, it might adopt sealed circulation.

4. The operation cost is low: 1hour/day.operator is enough for normal operation. Low stirring speed and reasonable structure, the worn amount is few, and the maintenance fee is low.

5. Steady operation: The material particles fully contact heat transferring surface, because of the special compressing and swell-stirring effect of the wedge shaped blade. The difference of the temperature, humidity and mixing effect are very small in the different axial area, so to ensure the stability of process.

Hollow Paddle Dryer

Hollow Paddle Dryer Machinery, Hollow Blade Dryer, Hollow Paddle Drying Equipment

Changzhou Ruide Drying Engineering Technology Co., Ltd , http://www.rddryer.com