Changzhou Osdun Drying Equipment Co., Ltd
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Efficient thin film evaporator
Efficient thin film evaporator
Product details

product overview
Our company has been manufacturing this type of equipment for many years and has accumulated rich experience in manufacturing and use. For a long time, we have closely integrated with customers' production reality and market demand to meet their process requirements, select reasonable and suitable structures, and ensure superior and reliable manufacturing quality. We have continuously improved and perfected our tooling equipment, testing methods, and product design, and have achieved remarkable results. Our technical level and product quality are at the forefront in China.


Equipment features
The rotating thin film evaporator has the following unique advantages that cannot be compared to conventional film evaporators:
1. Minimal pressure loss
In an efficient rotating thin film evaporator, the material flow and the secondary evaporation steam flow are two independent channels: the material descends along the inner wall of the evaporator cylinder (forced film formation) to form a film; The secondary steam emitted from the evaporation surface leaves the evaporator almost unobstructed from the central space of the cylinder, so the pressure loss (or resistance drop) is minimal.
2 can achieve operation under true vacuum conditions
Due to the extremely low resistance of the secondary vapor from the evaporation surface to the condenser, the evaporation surface on the inner wall of the entire evaporation cylinder maintains a high vacuum degree (up to -750mmHg), almost equal to the vacuum degree at the outlet of the vacuum system. As the vacuum degree increases, the boiling point of the processed material is effectively reduced.
3 high heat transfer coefficients, high evaporation intensity
The decrease in boiling point increases the temperature difference with the heat medium; The turbulent liquid film reduces thermal resistance; Simultaneously suppressing material coking and scaling on the wall, and also improving the heat transfer coefficient of the evaporator wall; Therefore, the heat transfer coefficient of the high-efficiency rotating thin film evaporator can reach up to 8000KJ/h.m2oC, resulting in a high evaporation intensity.
4. Low temperature evaporation
Due to the high vacuum level maintained inside the evaporator, the boiling point of the processed material is greatly reduced, making it particularly suitable for low-temperature evaporation of thermosensitive materials.
5. Short overcurrent time
The overcurrent time of the material in the evaporator is very short, about 10 seconds; For commonly used activity scrapers, the end face that scrapes the material has a guiding groove with a slope angle of usually 45oC. Changing the angle of the slope can change the flow time of the material. Under the scraping of the scraper, the material spirals down and leaves the evaporation section. Shorten the overcurrent time and effectively prevent the decomposition, polymerization, or deterioration of the product during the evaporation process.
6 can utilize low-grade steam
Steam is a commonly used heat medium. By reducing the boiling point of the material, the temperature of the heating medium can be lowered while ensuring the same Δ t. Utilizing low-grade steam is beneficial for the comprehensive utilization of energy.
7. Strong adaptability and easy operation
The unique structural design allows this product to handle materials with high viscosity, particle content, thermal sensitivity, and easy crystallization that are difficult to handle with conventional evaporators.
The rotary thin film evaporator has high operational flexibility, stable operating conditions, low maintenance workload, and easy maintenance.


Technical Parameter

size

Total height of equipment

Heating cylinder height B

Feeding separation cylinder C

Outer diameter of cylinder D

Installation support height E

Motor reducer F

Support hole spacing G

Dn

0.5

2205

800

500

273

1365

680

480

210

1

3990

1500

500

278

1795

1445

541

219

2

4470

1830

755

462

2455

1565

843

400

4

5490

2630

844

712

3511

1565

1003

600

6

6275

2890

844

912

3817

1944

1236

800

8

6910

3658

844

916

4587

1909

1236

800

10

6960

3658

900

1112

4542

1918

1567

1000

12

7460

3658

1003

1316

4985

1998

1909

1200

device

Motor power KW

pressure

Total weight (approximately)

KG

jacket

inner cylinder

1.50

0.4

<-0.095< p=''>

460

2.2

0.4

<-0.095< p=''>

680

3.0

0.4

<-0.095< p=''>

1100

5.5

0.4

<-0.095< p=''>

1950

7.5

0.4

<-0.095< p=''>

2980

7.5

0.4

<-0.095< p=''>

3550

7.4

0.4

<-0.095< p=''>

4880

11

0.4

<-0.095< p=''>

6300

Note:
1. The above external dimensions may vary slightly from the actual equipment, for reference only. Please refer to the drawings provided by our company after placing the order;
2. The weight D represents the outer diameter of the jacket, and Dn represents the inner diameter of the evaporator cylinder;
3. Jacket pressure: Typically designed for 0.4MPa steam, it can also be designed separately according to user requirements. When using thermal oil, it can also be designed separately;
4. Vacuum degree of evaporation inner cylinder: It is usually -0.09MPa (about -680mmHg), but can also be adjusted to -0.095MPa (about -20mmHg) and -0.0986Mpa (about -750mmHg) according to user needs;
5. Main cylinder body (part in contact with the material) and jacket material: Carbon steel, SUS304, 316L, 316Ti or titanium materials can be used according to user and actual needs;
6. Total weight of equipment: does not include material weight.

2890

844

912

3817

1944

1236

800


8

6910

3658

844

916

4587

1909

1236

800

10

6960

3658

900

1112

4542

1918

1567

1000

12

7460

3658

1003

1316

4985

1998

1909

1200

device

Motor power KW

pressure

Total weight (approximately)

KG

jacket

inner cylinder

1.50

0.4

<-0.095< p=''>

460

2.2

0.4

<-0.095< p=''>

680

3.0

0.4

<-0.095< p=''>

1100

5.5

0.4

<-0.095< p=''>

1950

7.5

0.4

<-0.095< p=''>

2980

7.5

0.4

<-0.095< p=''>

3550

7.4

0.4

<-0.095< p=''>

4880

11

0.4

<-0.095< p=''>

6300




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