1. Working principle
Firstly, the heated nitrogen is filled in the drying tower. The
dried liquid material is transported to the centrifugal nozzle by
the infusion pump. The liquid material is atomized into fine
droplets by the centrifugal atomizer rotating at high speed.
Nitrogen is fully heat-exchanged, the liquid part of the material
is instantaneously evaporated, the powdery material formed by the
solid part sinks to the bottom of the tower, and finally the dried
powdery material is discharged from the bottom of the tower. Among
them, the evaporated organic solvent gas is subjected to dust
removal treatment by the cyclone separator, bag dust collector and
other devices under the action of a fan, and then the saturated
organic solvent gas after dedusting is condensed into a liquid by
the condenser. Condenser, in order to prevent the liquid from being
carried out, a gas-liquid separator is added behind. In the
meantime, the inert gas as the drying medium is continuously heated
and reused as a dry carrier in the system.
The explosion-proof closed-loop centrifugal spray drying system
works in a closed environment. The drying medium is an inert gas
such as nitrogen. The drying tower is operated under positive
pressure. If the internal pressure drops, the pressure transmitter
can automatically control the entry of nitrogen. Volume to ensure
system pressure balance. Because nitrogen is used as the
circulating carrier, it has a protective effect on the dried
materials. The circulating carrier such as nitrogen plays the role
of carrying moisture, dehumidifying and circulating transmission,
and its carrier medium can be reused. However, the conventional
ordinary centrifugal spray drying is to achieve the purpose of
humidification through continuous air supply and exhaust, and the
tower is controlled to operate under negative pressure. This is
also the explosion-proof closed centrifugal spray drying system and
the ordinary centrifugal spray drying system. The obvious
difference. Therefore, the explosion-proof closed-cycle centrifugal
spray drying system is particularly suitable for drying organic
solvent materials, toxic gas materials, and materials that are
prone to oxidation during the drying process.
2. Main features and uses
The closed loop centrifugal spray dryer is suitable for the drying
of materials that need to recover the solvent from organic
solvents, volatile toxic and harmful gases, easy oxidation and
light, etc. from solutions, emulsion suspensions and pastes. It not
only inherits In addition to all the advantages of the centrifugal
spray dryer, and the system does not have any powdery diarrhea
during the drying operation, the yield of the finished product is
almost 100%. The solvent recovered through the recovery system can
be recycled through secondary treatment, thereby greatly reducing
production costs. Favored by the majority of users. It is widely
used in the drying operations of pharmaceutical, chemical, food and
other industries.
3. Its main features are as follows:
The system process design of the equipment is explosion-proof. The
main body and key parts of the equipment are equipped with venting
discs. So as to ensure the safety of equipment operation. (There is
no explosion relief device for systems with volatile poisonous and
harmful gases.)
The system is equipped with a condensate system and a recovery
system for the solvent of the drying material liquid, so that the
solvent in the drying material liquid can be recycled through
secondary treatment, thereby greatly reducing the production cost.
The equipment is fully enclosed design, so the yield of dried
products is very high when drying, which is not achieved by other
types of dryers.
The system equipment has a cleaning tower and adopts an advanced
atomizing cleaning device to greatly improve the operating
reliability of the system.
The closed-circuit centrifugal spray dryer can use inert gas as the
drying carrier for drying materials that are easy to be oxidized to
ensure that the materials are not oxidized when being dried.
4. Technical characteristics of our company:
Our company has rich experience in this field, is the leader of
such equipment in China, and fully absorbs foreign experience, and
participated in the design and transformation of the localization
of many large chemical companies in China.
Due to our company's long-term experience, based on years of
experience and technological innovation, it has applied for a
patent, and its products are sold to large domestic chemical
companies, and also exported to Portugal and Mexico.
5. Instructions for ordering:
Liquid material name, physical properties: solid content (or solid
content), viscosity, surface tension, PH value.
Powder capacity after drying, allowable residual water content,
particle size, and allowable maximum temperature.
Production, daily opening hours.
Supplyable energy: steam pressure supply capacity, electricity
capacity, coal, oil and gas supply.
Control requirements: whether the inlet and outlet temperatures
need to be controlled automatically.
Receiving requirements: whether to install bag catcher.
This device replaces the normal air environment with an inert gas
environment formed by using circulating nitrogen to perform spray
drying. In addition to recycling products, solvent recovery is also
possible.
Features
1. Prevent product oxidation and improve product quality.
2. It is easy to realize dust-free and aseptic operation.
3. It can recover the solvent in the feed liquid.
4. Improve the preservation of aromatic ingredients.
5. It can dry combustible liquid or cool granulation.
6. It can dry materials with strong heat sensitivity.
7. Can achieve low pollution and no pollution.
8. The deodorizing device can be omitted.
9. Can achieve low temperature drying below 100 degrees Celsius.
Applicable Products
1. Non-oxide ceramics (AeN, Si3N4, etc.), cemented carbide,
high-performance battery materials, etc.
2. Seasonings, health products.
3. Pharmaceutical products, vitamins, organic medicines.
4. Synthetic resin and paraffin.