The machine adopts full close structure with primary middle and
high effect air filter to fit one hundred thousand grade
requirement, the tower body is provide cooling air jacket to make
wall temperature less than 80 degree, when the material stops on
wall will not to be preheated and softened, it increases the powder
collection rate (95%) and will not appear mixing and sticking wall
phenomenon.
Principle
High Speed centrifugal atomizing for the extract of traditional
Chinese Medicine is an application of centrifugal atomizing
technique. It also uses high-speed atomizer to make liquid material
into foggy droplet to contact with hot air fully to finish instant
drying and get final powder products.
The LPG Chinese Herb Extract Spray Dryer is specially designed to
solved the problems which previous spray dryer meets during drying
herb extract and plant extract products as follows:
1) Raw material sticks to wall and powder collection rate is low.
2) Raw material stays on wall for long time, resulting in coking
and deterioration phenomenon.
3) It is difficult to clean and can not meet GMP requirement.
4) Low in output: 150 type dryer can only process 50-60kgs/h of raw
material liquid.
In view of above situation, according to property and process
requirement of traditional Chinese Herb Extract, our factory has
researched and designed the special spray dryer the extract liquid
and got patent. It solves the traditional difficult problems in
drying the extract and product colour after drying is good. The
dried raw material does not degenerate too. It raises the economic
benefit for user greatly. There are special features as below
compared to ordinary type spray dryer.
1) Adopt three grade air filter, the inlet air reaches one hundred
thousand grade
2) Adopt wall cooling device, the temperature of inner wall will be
less than 80 degree, even if materials stay on inner wall surface,
it will not be burnt and softened.
3) Its whole volume is 3.5 times of standard high speed spray
dryers.
4) Adopt quick-open washing device, it can meet requirement for
varieties production, the CIP auto cleaning device can also equip
if needed.
5) Adopt wet duster and no powder dust leak out. It is in
conformity with the requirements of environment protection.
6) Air sweeping device is optional, the clean effect is satisfied
for some product.
7) Adopt PLC control and touch screen system to display system
processing.
8) Dehumidifier and centralized collect system can be used to avoid
re-wetting and softening.
Model | 5 | 25 | 50 | 100 | 150 | 200-2000 |
Inlet temperature | 350°C |
Outlet temperature | 80-90°C |
Max. evaporation(kg/h) | 5 | 25 | 50 | 100 | 150 | 200-2000 |
Centrifugal spraying nozzle transmission mode | compressed air transmission | mechanical transmission |
Rotation speed (r.p.m) | 25000 | 22000 | 21500 | 18000 | 18000 | 15000 |
Spray disc diameter | 50mm | 100mm | 120mm | 140mm | 150mm | 180-340mm |
thermal source | electricity | electricity | electricity + steam, fuel, oil, fuelgas | solved by user |
Max. electric heating power (kw) | 8 | 31.5 | 60 | 81 | 99 |
|
Overall dimension | 1.8*0.93*2.2 | 3*2.7*4.26 | 3.7*3.2*5.1 | 4.6*4.2*6 | 5.5*4.5*7 | optional |
Powder recollection (%) | 95 | 95 | 95 | 95 | 95 | 95 |
Features
1) The tower body is equipped with cool air jacket to reduce inside
tower temperature and eliminate product preheating and soften
phenomenon.
2) The atomizer on top of tower is equipped with cooling device to
reduce atomizer temperature, at the same effectively eliminate
material return to the top in eddy current and avoid preheat coking
phenomenon.
3) Tower body and pipeline is equipped with manual quick-open
cleaning hole and drainage hole. CIP automatic cleaning device can
also equipped if needed.
4) A automatic control constant temperature feeding tank can be
equipped.
5) Manual high pressure washing tools can be offered as accessories
together with spray dryer.
6) All product contact parts are made with Stainless Steel, (or
whole parts with stainless steel)
7) Product collect way adopts two grade cyclones and water film
duster.
8) Air inlet temperature is automatic and continuous control which
is interlocked with feeding.
9) An air sweeping device can be optional for some products.
