300 Centrifugal Spray Drying Project

I. Equipment design conditions

Ii. System description

Three, equipment technical parameters table

Iv. Description of equipment mechanism performance

V. Device configuration details

Vi. List of spare parts of equipment

Vii. Equipment price

Viii. Supply cycle

Ix. Engineering Description

X. Other matters

1. Equipment design conditions

material and liquid conditions

Material name:

Material solid content: ≥25%

Material handling capacity: 380kg/ hour

Dry product final moisture: ≤5% dry product yield: 100Kg/h

Water evaporation: 280Kg/h

Material liquid temperature: about 30℃

Equipment material: Material contact 304

Heat source: saturated steam 0.8mpa + electric heating compensation

Air inlet temperature of drying tower: 180-200℃

Air temperature of drying tower: 80-100℃

Exhaust temperature: 60℃

Finished particle size: 90-100 micron

Dry product recovery rate: ≥98%

2. Process conditions

Atomization method: centrifugal fog drops and hot air

Contact mode: parallel flow

Heat source and heating mode: steam + electric heating

Tower inlet air temperature: about 180-200℃

Tower exhaust temperature: 80 ~ 100℃

Product collection method: collector at the bottom of the spray tower

Product collection method: first stage + second stage cyclone collector

Equipment material: Contact with material 304

3. Design meteorological conditions (standard)

Atmospheric pressure: 101.325KPa

Ambient temperature: ~20 ° C

Relative humidity: 60-80%

4. Utilities

4.1, the power supply

Power supply: 380V, 3 phase, 50HZ

Power: 70KW;

Electric compensation heating: 150KW (automatic temperature control)

4.2, steam consumption: 218240kcal/h÷500kcal=~436kg/h

(Steam /kg calorific value utilization: 500Kcal)

4.3 Compressed air

Pressure: 0.4-0.6 MPa

Usage: 0.3 m3 / min

4.4 Water consumption (drying tower cleaning)

Pressure: Clean water gun

Dosage: 500kg/h(for cleaning)

5. Calculation process

1, per hour dry production: G dry = 100 kg/h

2, moisture evaporation per hour: W water =100×(75-5)÷(100-75)=280kg/h

3, stock solution processing capacity per hour: G wet = G dry +W water =100+280=380kg/h

4, the total heat consumption of water evaporation: Q1= 280×600=168000kcal/h

5, material and moisture temperature must heat: Q3=380×1×(100-20)=30400kcal/h

6, total energy consumption: Q total =Q1+Q2=198400kcal/h

7, drying equipment heat loss 10% : Q total =198400×1.1=218240kcal/h

Ii. Description of selection

At the beginning of the selection

LPG-250 centrifugal spray drying unit

Heating system: saturated steam + electric heating compensation

Fine powder collection system: first stage cyclone collector

Fine powder collection system: secondary cyclone collector

Medium circulation system: open circulation of induced draft fan

Air filtration system: initial effect。

Feeding system: screw pump adjustable feeding

Control system: instrument display temperature, differential pressure inlet and outlet air temperature automatic control material liquid automatic control。

Three, equipment technical parameters table

Water evaporation (water evaporation) 280Kg/h (set)

Tower diameter/tower height Outer diameter 4.2m/total height 9.5m

Operating temperature Inlet temperature 200/ outlet temperature 100

Mechanical centrifugal atomizer domestic well-known brand

Installed power drive 70KW,

Electric heating compensation 150KW;

Gas consumption is about 0.6m3/min

Water consumption 500kg/h (for cleaning)

Drying system in the form of open circulation system

Feeding mode screw pump stable feeding

Hot air contact mode parallel flow mode

Heat source steam + electric heating compensation

Product collection method cyclone dust collector

Atomization method: Mechanical centrifugal atomization

Control mode: set and control air inlet temperature arbitrarily, display temperature, pressure difference flow control