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Scraper Film Evaporator is a device commonly used in the continuous evaporation process of liquid materials. It is suitable for materials with high viscosity, easy scaling, heat sensitivity, and easy decomposition. It can efficiently evaporate and concentrate the solution, suspension, or slurry of these materials.


The working principle of a scraping film evaporator is to continuously flow the material to be processed through the heating wall in a thin film manner. By heating the wall at high temperature, the material quickly evaporates, thereby achieving evaporation and concentration of the material. The formation and maintenance of thin films are achieved by installing a certain number of scrapers on the heated wall surface. These scrapers continuously scrape off the thin film with a small thickness to ensure the continuous flow of the material in the form of the film, thereby increasing the effectiveness of heat and mass transfer.


The advantages of a scraper film evaporator include:
High efficiency: The scraping film evaporator adopts a thin film flow method, with a large contact area and high heat and mass transfer efficiency. It can complete the evaporation and concentration process in a short time and improve production efficiency.
Strong adaptability: The scraping film evaporator is suitable for handling various materials with viscosity, thermal sensitivity, easy scaling, and easy decomposition, and can meet the processing needs of different materials.


Continuous operation: The scraping film evaporator can achieve continuous material feeding, evaporation, and concentration, reducing downtime and manual intervention.


High product quality: Due to the continuous flow of the scraper film evaporator, it avoids the prolonged stagnation time of materials in the equipment, which is conducive to preventing the degradation and scaling of thermal sensitive materials, thereby improving product quality.
Simple equipment structure: The structure of the scraper film evaporator is relatively simple, easy to maintain and clean.
Overall, film scraping evaporators are highly efficient, adaptable, and continuously operational equipment widely used in industries such as chemical, pharmaceutical, food, and environmental protection, for the evaporation and concentration process of liquid materials.


Technical Parameters:


Model

BYGB-1

BYGB-2

BYGB-4

BYGB-6

BYGB-8

BYGB-10

BYGB-12

BYGB-15

BYGB-20

Heat transfer area M2

1

2

4

6

8

10

12

15

20

Vapor pressure MPa

0.4

0.4

0.4

0.4

0.4

0.4

0.4

0.4

0.4

Vacuum degree MPa

70

70

70

70

70

70

70

70

70

Evaporation KG/H

150

300

600

900

1200

1500

1800

2100

2600

Energy consumption

KG/H

165

330

850

1200

1600

1800

2200

2500

3100

Motor power KW

1.5

3

5.5

7.5

7.5

11

11

15

18.5

Speed RPM

130

130

130

85

85

85

63

63

63

Device height  MM

2600

4872

5640

6406

6990

7320

9460

10500

12


Summary:
Scraper film evaporator is a high efficient evaporation or distillation equipment, which distribute liquid to uniform thin film through high-speed rotation for evaporation or distillation, and it can also carry out deodorization, de-foaming reaction and heating, cooling unit operations, it can be widely applicable to Chinese and western medicine, food, light industry, petroleum, chemical industry, environmental protection industry etc.

Centrifugal scraped film evaporator adopts foreign advanced technology, stand at a leading position with international level in the field of scraper film evaporator.


Performance and characteristics:
This equipment is the newest structure of evaporator in the world, also can form the thin film on the very small flow, The sediment in liquid adhere the cylinder inner wall surface at the evaporation period can be quickly removed by scraper,  compared with fixed gap scraper evaporator, evaporation can improve 40-69%, it has the following features:
1. High heat transfer coefficient and evaporation capacity, evaporation intensity can reach 100kg/m2/ HR, high thermal efficiency.
2.Material heating time is short, between 5 to 10 seconds, and can operate in the vacuum condition, more beneficial for heat- sensitive materials, keeping the various ingredients do not produce any decomposition, to ensure product quality.
3.Adaptable to large viscosity range, handle both high and low viscosity material, material viscosity can reach up to 100000 CPS (CP)
4. By changing the direction of rotation of scraper trench, can adjust the material treatment time in the evaporator.
5.The evaporation section of the inner wall of the barrel body through precision boring and polishing treatment, the surface is not easy to produce coke, scaling.
6.Convenient operation, easy adjustment of product index, can automatic continuous produce in airtight condition。
7.Equipment covers small area, simple structure, convenient repair, easy to clean.

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