LPG Model High Speed Centrifugal Ceramic Powder Spray Dryer
Equipment design conditions and requirements
The products:The baby milk
Content water of beginning:65%(Solid content:35%)
Content water of final:≤4%
Inlet air temperature:180-220℃
Exhaust temperature:80-100℃
Water evaporation:About 300kg/hour
The negative pressure of the tower inside:-150Pa
Rotating speed frequency:40-50hz;
Feeder Capacity: 320-380kg/hour
Dry mesh: 60-150
The atmospheric pressure:760mmH2O
Ambient temperature: 20 ℃
Absolute humidity: 80%
Power supply: 380 v, 3 phase, 50 hz
The characteristics of dry milk from a liquid to easily moisture
absorption, heat sensitive, food-grade requirements higher;And
because it is food, more attention should be paid to the product
color, fragrance, taste of the high demand.So they asked us to time
must be shorter when dry, water should be low, into powder after
rapid cooling and dehumidification.Our company technical personnel
studied the special milk drying characteristics, developed the milk
spray drying equipment, it has the following features;
1. The quality of the product can stability control
Atomizer in this unit adopts frequency control of motor speed, can
arbitrarily change the atomization effect, in order to achieve
adequate control product particle size;Design activity of the hot
air distributor, can adjust the hot wind;The tower of induced draft
fan air volume adjustment, to adjust the negative pressure,
residence time control material.Applicable to high temperature
instant drying, evaporation is also applicable to low temperatures
over long periods of time;USES the advanced fuzzy control
technology, create the wind temperature and feed rate of the fuzzy
mathematical model of the programmed in and let outlet air
temperature to automatically adjust the feed rate of the automatic
tracking, ensure the stability of product quality.
2, To prevent coking and moisture absorption wall sticking powder
According to the characteristics of this kind of material, in the
design of tower diameter tower high made a corresponding
adjustment, not only ensure powder dry before reach the tower wall,
guaranteeing powder dry hot air retention time and complete;On cone
increase air cooling tower jacketed cooling device, adopting
natural wind forced cooling tower inner cone, cone within the
temperature around 50 degrees, when the drying temperature rise
within the powder into the cone, after will not zoom change paste
by local high temperature;In the cone with a total of 3 sets of
pneumatic percussion hammer intermittent oscillation in cone, the
inner cone of the dry powder drop quickly to the main tower
exports;Desiccant cooling feeding device is out of the wind forced
the host adopt refrigeration dehumidifier and primary cyclone
powder cooled and sent to clean pollination blanking, there are
two, one rapid cooling to prevent moisture absorption, and can meet
the demands of the FDA's operations.
3. No product material, plugging material
All contact with the material in the host place by plane or
circular arc transition and contact surfaces are grinding,
polishing operations processing (fine buffing to train more than
10), avoid sand holes, corner, eliminate wall material, in line
with the GMP requirements.
4. Dust recovery rate is high
Spray dry dust removal system of the unit is a two-stage cyclone
separator, and a water film dust collector.Primary cyclone with
high gas separator, secondary cyclone with dispersive cyclone
separator and its yield can reach 97-98%, level 3 USES the exhaust
water film absorb dust, efficiency is above 99.5%, and the
absorption liquid can be recycled after discharge exhaust gas can
be up to environmental standards.
5. No pollution, no leakage, easy disassembly, easy to clean
Air to the processing system adopts central Asia in the early high
efficiency air filter, clean air to hundreds of level;The entire
unit and material contact material is made of stainless steel,
ensure material without pollution;Transmission parts contacting
with materials are good, the labyrinth can waterproof and oil;The
use of sealing butterfly valve discharge operation, prevent air
leakage;Host, cyclone left a clean mouth, induced air discharging
section are connected by living, can tear open outfit, cleaning and
disinfection sterilization, etc., at any time to fulfill the
requirements of GMP.
6. To realize automation control
The unit process control system with PLC circuit;Touch screen
animation display process, operable;Variable operating parameters
to realize the fuzzy regulation technology of automatic
tracking;Using frequency converter safely the adjusting
atomizer;Inlet temperature accuracy can reach plus or minus 2 ℃,
minimizing energy consumption;Into and out of digital display
temperature, tower, tower pressure, can be set in a precise and so
on.
The many advantages of spray drying unit configuration, is based on
a lot of similar products after use, experience, and many advanced
foreign technology and research development, now has been in the
domestic several successful use of food additives, pharmaceutical
and chemical plant, compared with the conventional unit, obtained
obvious good effect, for example: jiangxi flavour is food,
guangdong famous flowers spices, Shanghai shenbao perfume ludustry
and, surplus life in Hong Kong, etc., the efficiency is very high,
received industry customer consistent high praise and correct.We
will also continue to spray drying technology further and deeper
research and development, a better technical support for the
enterprises at home and abroad
Design of equipment
Early selection: LPG200 milk processing high-speed centrifugal
spray drying units,
Heating system: the steam heating
Dust removal system: secondary cyclone separation combined
dedusting water film dust catcher
Circulation system: send induced draft fan open cycle
Air filtration system: early, middle, and high efficiency air
filter
Feeder system: na mo stepless adjustable feed pump
Blanking system: star unloading valve
Control system: frequency converter adjusted atomizer speed, to
ensure the best results display instrument display temperature,
pressure, differential pressure, automatic tracking control
variable parameters fuzzy technology and so on
Parameter:
| Water evaporation | 200Kg/h(max) | Tower diameter/tower height | 3．6M/7.8M |
| Operating temperature | Inlet Temperature 200/Outlet Temperature 90 | atomizer | Speed:15000—18000r.p.m Diameter:150mm |
| Power | 33KW |
| The steam heat exchanger | 350m2 | The air consumption | 0．4m3/min |
| The system volume | 6000 m3/h | System pollination rate | ≥99% |
| material receiving | Focus receiving | | |
