Many people want to understand some of the relevant knowledge of the pressure spray dryer, because for the dryer we have some understanding, but for the pressure spray dryer this is still a little fuzzy, so here I have carefully organized for you on the working principle of the pressure spray dryer, the characteristics of the scope of application and so on the several aspects of this brief introduction, I hope to be able to help in this regard! I hope to be able to help friends with this demand!
The working principle of pressure spray dryer
Through the 2-20MPa high pressure will be liquid material (filtered liquid) into the pressure atomizer atomized into small droplets, after the atomization of the droplets (surface area greatly increased) and the hot air in full contact with the rapid completion of the drying process. Get powder or fine particles of the finished product.
Pressure spray dryer has the following characteristics
First, the drying speed, the material is atomized by the liquid surface area greatly increased in the hot air stream, the instantaneous evaporation of 95-98% of the water, the completion of the drying time is only a dozen seconds to dozens of seconds, especially suitable for drying of heat-sensitive materials.
Second, the resulting product is spherical particles, uniform fineness,
good mobility, good solubility, high purity and good quality products.Third, the use of a wide range of materials, according to the characteristics of the material, you can use hot air drying can also be used in cold air granulation, the adaptability of the material.
Fourth, the operation is simple and stable, easy to control, easy to realize automatic operation.
Pressure spray dryer scope of application
Spray drying granulation:
Chemical: organic catalysts, resins, synthetic laundry detergent, fats and oils, ammonium sulfate, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes, dyes and other materials.
Foodstuffs: amino acids and analogs, flavorings, proteins, starches, dairy products, coffee extracts, fishmeal, meat extracts and so on.
Pharmaceuticals: proprietary Chinese medicines, pesticides, antibiotics, pharmaceutical preparations and so on.
Ceramics: magnesium oxide, china clay, various metal oxides, dolomite and so on.
?
Spray granulation:
All kinds of fertilizers, alumina, ceramic powder, pharmaceuticals, heavy metal super-hard steel, fertilizers, granular laundry detergent, proprietary Chinese medicines and so on.
Spray cooling granulation:
Amino fatty acids, paraffin, glycerin, tallow and so on.
Spray crystallization, spray concentration, spray reaction is also often used.
Pressure spray dryer installation method
According to the equipment layout diagram, firstly, put the drying mainframe in position, however, connect the mainframe with the pipeline of the heating unit. Put the heater in position;
Lift the cyclone separator and bag duster to the pre-set position in the plant according to the equipment layout diagram, connect the pipeline between the drying mainframe and the cyclone separator firstly,
and then connect the pipeline between the cyclone separator and the bag duster;Connect the pipeline between the hot air furnace and the blower as well as the air sieving and checking program respectively. At the same time connect the pipeline between the bag filter and the induced draft fan;
Calibrate the perpendicularity between the drying host and the ground plane, and the perpendicularity between the top of the drying host tower and the ground should be no more than 10mm;
The doser is in place, and connected to the drying host;
When connecting the pipelines, the asbestos ropes should be embedded or sealing strips (silicone rubber sealing gaskets are required to meet the GMP requirements);
Fixing the connections, and then connecting the hot stove and the blower and the air screening program.
Fix the fasteners of each connection to the fastener plate tight no loosening until;
Connect the electrical cabinet line, the electrical cabinet should be firmly grounded, and marked with a clear sign (wires should be threaded through the pipe or wire box);
?
Pressure spray dryer routine maintenance
Pressure spray dryer machine running for a long time or due to improper operation, part of the equipment will appear in the aggregate and affect the normal operation, this time you need to stop the work to clean. For the cleaning of the drying tower collector, should open the sweeping door, with a long broom to sweep away the bottom of the funnel-shaped collector, open the discharge valve, rinse the tower with tap water. Cyclone separator dust collection removal, the same need to open the cyclone separator, broom sweeping collector, if necessary, also need to use water to rinse. For the cleaning of the bag filter, the control switch should be opened and continuously tapped, then the cleaning door should be opened,
tapping the bag filter, and finally the filter bag should be replaced. For the cleaning of the slurry piping system, you should open the drain valve of the two-way screening program, clean the screening program screen and piping, then open the material pump, replace the material with water, and clean the pump pipe, pressure stabilizing package and piping.After a period of time) of operation, we need to spray granulation dryer for the necessary inspection and maintenance. For the material supply system, should check the screening program, pipes, valves, nozzles, etc., to see if there is no clogging, regular cleaning, check the wear and tear of the nozzles in order to replace them in a timely manner. The material pump should be checked to see if there is oil leakage, whether the pumping pressure is normal, whether the oil level is normal and so on. For the fan, should check whether the shaft and bearing lack of oil heat, vibration, noise, etc., if necessary, clean the wind blade and do the balance of the wind blade calibration. For the heater, should check whether the heat pipe is normal, if necessary, clean the oil pipe, oil pump, oil nozzle three places of the filter. In addition, should also pay attention to the motor with or without heat, vibration, abnormal sound, etc., the control cabinet of the instrumentation and electrical work is normal.
Editor's summary: I believe that through these explanations, we can also make a more accurate judgment in the choice of time, more appropriate to their own needs, to be able to more quickly and effectively choose the right object for themselves. For more information, please continue to pay attention to our website, the follow-up will present more exciting content.
The control cabinet instrumentation and electrical work is normal, etc..Editor's summary: I believe that through these explanations, we can also make a more accurate judgment in the choice of time, more relevant to their own needs, to be able to more quickly and effectively choose the right object for themselves. For more information, please continue to pay attention to our website, the follow-up will present more exciting content.