The scraper thin film evaporator is a new type of high efficiency evaporator, which is made by rotating the scraper to form film and evaporating efficiently under vacuum. The thin film has high evaporation strength, short overflow time and large operating elasticity, and is especially suitable for the evaporation and concentration of heat sensitive material, sticky material and easy crystallized granular materials, degassing and dissolving, distillation and purification. Therefore, the scraper film evaporator has been widely applied in chemical, petrochemical, pharmaceutical, pesticide, daily chemical, food and fine chemical industries.
Structure and characteristics
Higher vacuum: the flow direction of the material and the two steam flow direction are reverse, so the vacuum degree in the evaporator is high (the pressure drop loss is small), allowing the operating pressure to reach the lower operating vacuum, the experimental scale of the equipment vacuum can reach 10Pa, even if the industrial scale equipment can reach 1-100Pa.
The operating temperature is much lower than the boiling point of the material: due to the large proportion of the gas phase channel in the scraper thin film evaporator, the lower pressure drop can obtain a higher evaporation operation vacuum, and the boiling point of the material is also greatly reduced.
The heating time is short: by using the vertical scraper film design, the retention time of the material on the heating wall is short. For the other distillation, the heating time is generally longer (more than 30 minutes or even dozens of hours), while the scraper film distillation is only ten seconds. The thermal decomposition may be minimized.
The efficiency of mass transfer and heat transfer is superior: the mechanical scraping film system, which is different from other defects such as the falling film evaporator, has uniform film thickness and excellent flow characteristics in the thin film evaporator, because the area of the liquid surface and the heating surface is almost equal, and the mass transfer and heat transfer efficiency are superior.
The scraper film evaporator can be used as a reboiler of a distillation column, and is combined with a distillation column for a thin film distillation device, which effectively improves the evaporation efficiency and the separation effect.
Advantages of scraper thin film evaporator in practical application
Higher vacuum, lower evaporation temperature, short residence time, high evaporation efficiency, continuous evaporation process.
The evaporation and desolvent operation is effective with heat sensitivity and concentration of materials that are not suitable to stay at a higher temperature.
High boiling point, high viscosity or easily crystallized products (loose particles).
As a rectifying tower reboiler, it has been combined into a thin film distillation unit and applied to conventional distillation or special rectification.
Evaporator wall self cleaning, less pollution, easy to clean.
We have always adhered to the principle of "assembly and commissioning before shipment - whole shipment - on-site zero installation" to save customers' huge cost and valuable time for on-site installation works.
We are leading the industry in terms of design and manufacturing level. Our cantilevered rotor is mature, reliable and lightweight, with strong structure and long service life.
We adhere to the "professional welding mold & large CNC machine tool" to ensure that the concentricity also ensures the rotor spindle's dynamic seal life.
The maintenance is simple, the area is small, and the light weight is moved.
4,Product specification
Evaporation area from 0.1m2 to 2M2, and can be processed according to customer requirements.
Model
Evaporation area (unit: m2)
Processing volume (unit: L/H)
Height (unit: mm)
Extra reserve height (unit: mm)
Equipment material
qfn bml - 10 -
Zero point one two
5～6
One thousand and two hundred
Six hundred
Stainless steel
qfn bml - 20 -
Zero point two four
10～12
One thousand five hundred and fifty
Eight hundred and fifty
Stainless steel
qfn bml - 50 -
Zero point five
Twenty-five
Two thousand and four hundred
One thousand and four hundred
Stainless steel
qfn - bml - 100
One
50～60
Three thousand
Two thousand
Stainless steel
qfn - bml - 200
Two
100～120
Four thousand seven hundred and fifty
Two thousand and seven hundred
Stainless steel
The above data are for reference only, and the specific items are different.
5, equipment parameters
Device name
Company
Number
Texture of material
Experimental scraper thin film evaporator and auxiliary equipment
set
One
s316l / s304 / gg - 17
Including equipment components
Company
Number
Prepare a note
The main body of thin film evaporator
Deceleration instrument motor
platform
One
Motor form: instrument speed control motor
Motor model: Y90-120
Motor power: 120W
Speed range: 90-1500rpm/50Hz
Manufacturer: Beijing V.T.V
Gear box model: 90JB3.6G15
Deceleration ratio: 1:3.6
Deceleration range: 0 ~ 415RPM
Features: low noise operation
governor
platform
One
Brand: Taiwan Delta
Speed regulation form: speed regulation of frequency converter
Model: VFD004E43A
Input: single phase AC200 ~ 220V/50, 60Hz
Output: three phase AC200 ~ 220V/50, 60Hz
Speed range: 0 ~ 415RPM
Features: timely online display of stirring speed
Transmission and sealing device
set
One
Model: M20-47-100
Material: S304/S316L
Seal form: compound seal
Model: S-104-20
Scraper gear
set
One
Material: S316L/ polytetrafluoroethylene
The film thickness is 0.1~1.5mm (depending on the properties of the material).
Film scraping form: roller type
Main body of 0.12m2 scraper thin film evaporator (jacket type)
set
One
Evaporator material: S316L
Evaporation area: 0.12m2
Amount of treatment (unit: ml/h): 800-3500 (water)
Heating form: jacket guide hot water / jacket steam
Design temperature: room temperature to 120 degrees centigrade
Design pressure: 10Pa (unloaded absolute pressure) ~ 105Pa
Evaporator specification: DN100
Material steam outlet: DN50
Heavy phase material exit: 35# ball mill
Gas phase temperature measurement: K thermocouple
Main body matching
High efficiency tube condenser
only
One
Material: stainless steel S304
Form: horizontal tube
Condensation area: 0.86m2
Outlet: 35# ball milling
Cooling water import and export: DN10*2 (pagoda)
Material direction: material steam shell process, cooling water pipe line.
Feed eye cup
set
One
Material: GG-17 high borosilicate glass /S316L
Characteristics: observation feeding situation and estimation of feed flow rate
Receiving bottle
only
Two
Material: GG-17 high borosilicate glass
Form: single round bottomed flask
Volume: 2000ml
Use: light, reorganization and reception
Feed intake: 35# ball milling *1
Spare temperature probe, vacuum silicone grease, tie band, plastic card, special wrench for combined mounting rack, file information, etc.
Option 1- feed system
Feed metering pump
platform
One
Feed metering pump: joint venture Lange, digital display, accurate measurement, touch button control
Drive: BT100-2J
Pump head: YZ II 25
Reference flow: 0 ~ 160ml/min (normal temperature and normal pressure water as carrier)
Display mode: digital display speed
Use of pipes: silica gel pipes
Specification: 24# peristaltic pump tube, 10*5
Random number: 2 meters
Customer selected item 2- vacuum system
Laboratory water ring vacuum pump
platform
One
Form: laboratory table water ring vacuum pump
Manufacturer: Yuhua, Gongyi
System no-load limit vacuum: 5KPa
Pumping rate: 10L/min* tap
Number of taps: 2
Power and voltage: 0.18KW/220V
Vacuum pipeline
set
Two
Vacuum high quality tube
Vacuum regulating valve
set
One
Material: S304
Form: needle valve
Vacuum shutoff valve
set
One
Material: S304
Form: ball valve
Customer selection item 3-Packing and freight service charges
