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[Pharmaceutical Network Technical Article] Centrifugal spray dryer is a device that uses centrifugal atomizer to dry some liquid materials.
It has the characteristics of fast drying speed, simplified production process, suitable for continuous control of production, and improved product purity.
It is widely used in Food, chemical, pharmaceutical, environmental protection and other industries
.
The working principle of the centrifugal spray dryer is: the air passes through the filter and the heater, and enters the air distributor on the top of the centrifugal spray dryer, and the hot air enters the dryer evenly in a spiral shape
.
The feed liquid is pumped from the feed liquid tank through the filter to the centrifugal atomizer at the top of the dryer, so that the feed liquid is sprayed into extremely small mist droplets.
The finished product is dried within time, and 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
.
It is understood that the user can also choose the heating method and dust collection and dust removal methods according to the actual situation
.
At present, centrifugal spray dryers have been widely used in the field of medicine.
There are many kinds of products on the market, which makes the drying efficiency of the pharmaceutical industry higher.
In order to improve the uniformity, fluidity and solubility of materials and products, some equipment manufacturers It has also intensified research and development efforts, continued to innovate processes, and created a high-speed centrifugal spray dryer with faster drying speed, higher product purity, and more convenient operation and control to meet the new needs and requirements of pharmaceutical and other enterprises for material drying
.
It is worth mentioning that in the process of using centrifugal spray dryers, many users often find that the nozzles of the equipment are faulty.
There may be noise or vibration from time to time, or even cause the equipment to fail to work normally.
Therefore, it is very important to understand the cause of the nozzle failure and solve the problem
.
So, how to deal with it? The industry believes that there are two aspects for reference
.
First, if it is found that there is noise or vibration when the centrifugal nozzle is running, it may be caused by improper cleaning and maintenance of the nozzle of the spray drying equipment, resulting in residual substances in the spray disc or bending and deformation of the main shaft; It is caused by the poor dynamic balance of the centrifugal disc
.
"If the rotation speed of the nozzle is too low and the evaporation is too low, it may be that the centrifugal nozzle components are faulty.
You need to stop using the nozzle and check the internal components of the nozzle
.
The reasons may be: the air volume of the entire system is reduced; the inlet temperature of the hot air is low; There is air leakage in the equipment, and cold air enters the drying room
.
" The above person said
.
Regular cleaning and maintenance of spray drying equipment nozzles is critical, otherwise subsequent failures may occur from time to time
.
To solve the problems caused by such reasons, the method is to check whether there is any residual material in the spray disc, and if so, it should be cleaned in time; if the spindle is found to be abnormal, the dynamic balance of the centrifugal disc should be replaced, readjusted or replaced, so as to solve the problem of nozzle failure
.
In addition, it is recommended in the industry to check whether the rotation speed of the centrifuge is normal; check whether the position of the regulating valve of the spray drying equipment centrifuge is correct; check whether the air filter and air heater pipeline are blocked; check whether the grid voltage is normal; check whether the electric heater is normal work; check whether the connection of each component of the spray drying equipment is sealed, etc.
, and do a good job in the inspection work, in order to further troubleshoot and solve the problem, and ensure the stability of the next operation of the equipment
.
It has the characteristics of fast drying speed, simplified production process, suitable for continuous control of production, and improved product purity.
It is widely used in Food, chemical, pharmaceutical, environmental protection and other industries
.
The working principle of the centrifugal spray dryer is: the air passes through the filter and the heater, and enters the air distributor on the top of the centrifugal spray dryer, and the hot air enters the dryer evenly in a spiral shape
.
The feed liquid is pumped from the feed liquid tank through the filter to the centrifugal atomizer at the top of the dryer, so that the feed liquid is sprayed into extremely small mist droplets.
The finished product is dried within time, and 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
.
It is understood that the user can also choose the heating method and dust collection and dust removal methods according to the actual situation
.
At present, centrifugal spray dryers have been widely used in the field of medicine.
There are many kinds of products on the market, which makes the drying efficiency of the pharmaceutical industry higher.
In order to improve the uniformity, fluidity and solubility of materials and products, some equipment manufacturers It has also intensified research and development efforts, continued to innovate processes, and created a high-speed centrifugal spray dryer with faster drying speed, higher product purity, and more convenient operation and control to meet the new needs and requirements of pharmaceutical and other enterprises for material drying
.
It is worth mentioning that in the process of using centrifugal spray dryers, many users often find that the nozzles of the equipment are faulty.
There may be noise or vibration from time to time, or even cause the equipment to fail to work normally.
Therefore, it is very important to understand the cause of the nozzle failure and solve the problem
.
So, how to deal with it? The industry believes that there are two aspects for reference
.
First, if it is found that there is noise or vibration when the centrifugal nozzle is running, it may be caused by improper cleaning and maintenance of the nozzle of the spray drying equipment, resulting in residual substances in the spray disc or bending and deformation of the main shaft; It is caused by the poor dynamic balance of the centrifugal disc
.
"If the rotation speed of the nozzle is too low and the evaporation is too low, it may be that the centrifugal nozzle components are faulty.
You need to stop using the nozzle and check the internal components of the nozzle
.
The reasons may be: the air volume of the entire system is reduced; the inlet temperature of the hot air is low; There is air leakage in the equipment, and cold air enters the drying room
.
" The above person said
.
Regular cleaning and maintenance of spray drying equipment nozzles is critical, otherwise subsequent failures may occur from time to time
.
To solve the problems caused by such reasons, the method is to check whether there is any residual material in the spray disc, and if so, it should be cleaned in time; if the spindle is found to be abnormal, the dynamic balance of the centrifugal disc should be replaced, readjusted or replaced, so as to solve the problem of nozzle failure
.
In addition, it is recommended in the industry to check whether the rotation speed of the centrifuge is normal; check whether the position of the regulating valve of the spray drying equipment centrifuge is correct; check whether the air filter and air heater pipeline are blocked; check whether the grid voltage is normal; check whether the electric heater is normal work; check whether the connection of each component of the spray drying equipment is sealed, etc.
, and do a good job in the inspection work, in order to further troubleshoot and solve the problem, and ensure the stability of the next operation of the equipment
.
