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High-speed centrifugal spray dryer operating procedures:
Ensure that all pipe connections have appropriate sealing materials
and good sealing functions, without running, bubbling, dripping, or
leaking.
Check whether the equipment and pipelines are blocked or leaking.
If there are any questions, they should be dealt with in time.
Check whether the rotation direction of the centrifugal fan is
correct and whether the conditioning butterfly valve at the outlet
is open.
Check whether the spray head on the top of the drying chamber is
firmly installed to prevent air leakage.
Check whether the temperature of the motor bearing is normal and
whether the anchor screws are loose.
After turning on the electric heater, check whether there is
leakage and preheat the barrel. The temperature is controlled
within the range of 180℃-220℃.
Adjust the frequency of the atomizer to make the nozzle reach a
high speed.
Operation steps:
The air enters the air distributor at the top of the dryer through
the filter and the heater, forming a spiral hot air that enters the
dryer evenly.
The liquid is pumped from the liquid tank through the filter to the
centrifugal atomizer at the top of the dryer to form extremely
small mist droplets.
The liquid material and hot air are in contact with each other, the
water evaporates quickly, and the finished product is dried in a
short time.
The finished product is discharged from the bottom of the drying
tower and the cyclone separator, and the exhaust gas is discharged
by the fan.
Safety precautions:
Before operation, make sure that all safety equipment such as
emergency stop buttons are in a usable state.
Operators should wear appropriate protective equipment such as work
clothes, gloves, goggles, etc.
During operation, pay close attention to the operating status of
the equipment. If there is any abnormality, stop the machine
immediately for inspection.
Following these operating procedures can ensure the safe and
efficient operation of the high-speed centrifugal spray dryer,
while ensuring the quality of the finished product.
The specifications of high-speed centrifugal spray dryers mainly include the following aspects:
Working principle: The working principle of high-speed
centrifugal spray dryers involves hot air passing through filters
and heaters and entering the top of the centrifugal spray dryer.
The hot air enters the dryer in a spiral shape and evenly. The
liquid is pumped from the liquid tank through the filter to the
centrifugal atomizer at the top of the dryer, so that the liquid is
sprayed into extremely small mist droplets. The liquid and hot air
are in contact with each other in parallel, and the water
evaporates rapidly. It is dried into a finished product in a very
short time. The finished product is discharged from the bottom of
the drying tower and the cyclone separator, and the exhaust gas is
discharged by the fan. Technical parameters: The specific
technical parameters may vary depending on different models and
configurations, but generally include the following aspects: Water
evaporation capacity: For example, the water evaporation capacity
of the LPG-200 centrifugal spray device is 200kg/h. Processing
capacity: This depends on the type of material to be processed and
the expected output. Initial and final moisture content of the
product: This is directly related to the degree of dryness and
quality of the product. Hot air inlet temperature: For example,
the hot air inlet temperature of LPG-200 is about 340℃.
Hot air outlet temperature: Usually maintained at 90-110℃.
Material: All made of stainless steel 304 to ensure the hygiene
and quality of the product.
Control system: Including temperature control, flow control, etc.
to ensure the quality and production efficiency of the product.
Application range: High-speed centrifugal spray dryer is suitable
for generating powdered and granular solid products from solutions,
emulsions, suspensions and paste-like liquid raw materials. It is
particularly suitable for occasions where precise control of
particle size distribution, residual moisture content, bulk density
and particle shape is required.
Equipment features:
Fast drying speed, generally only 5-15 seconds, with instantaneous
drying characteristics, suitable for drying heat-sensitive
materials.
The production process is simplified, the operation and control are
simple, and it is suitable for continuous control production.
Liquids with a moisture content of 40-90% are dried into powder at
one time to improve product purity.
The product has good dispersibility, fluidity and solubility. The
particle size, looseness and moisture content of the product can be
adjusted within a certain range by changing the operating
conditions, and it is very convenient to control and manage.
In summary, the specifications of the high-speed centrifugal spray
dryer cover its working principle, technical parameters,
application range and equipment characteristics. These
specifications jointly ensure the efficient operation of the
equipment and the high-quality output of the product.
Equipment pictures: