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Rotating scraper evaporator
Overview: The rotary scraper evaporator is an efficient evaporation and distillation equipment that uses a high-speed rotating scraper to distribute liquid into a uniform thin film for evaporation or distillation. It can also perform unit operations such as deodorization, defoaming reactions, heating evaporation, cooling crystallization, etc. It is widely used in industries such as pharmaceuticals, food, light industry, petroleum, chemical, and environmental protection in China and the West.
Performance and Characteristics: This equipment adopts a centrifugal sliding groove rotor, which is a new structure evaporator in foreign countries. It can form a thin film even at low flow rates. The sediment in the treatment liquid attached to the inner wall surface of the cylinder evaporation section can be quickly removed by the movable scraper. Compared with the fixed gap scraper evaporator, the evaporation capacity can be increased by 40-69%. It has the following performance and characteristics:
1. The heat transfer coefficient value is high, the evaporation capacity is large, the evaporation intensity can reach 150-200kg/m2 · h, and the thermal efficiency is high.
2. The heating time of the material is short, between about 5 seconds and 10 seconds, and it works under vacuum conditions, which is more advantageous for thermosensitive materials. It keeps various components from decomposing or oxidizing, ensuring product quality.
3. Adapting to a wide range of viscosity changes, it can handle both high and low viscosity materials, with material viscosity up to 100000 centipoise (CP)
4. Changing the rotation angle of the scraper groove can adjust the working time of the material in the evaporator.
5. The inner wall of the evaporation section cylinder is precision bored and polished, making the surface less prone to coking and scaling.
6. Easy to operate, easy to adjust product indicators, and capable of continuous production under closed conditions with self-control.
7. The equipment has a small footprint, simple structure, easy maintenance, and easy cleaning.
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| Main technical parameters |
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Project model |
LG0.8 |
LG1.5 |
LG2.5 |
LG4 |
LG6 |
LG10 |
Heat exchange area m2 |
0.8 |
1.5 |
2.5 |
4 |
6 |
10 |
Steam pressure MPa |
0.3 |
0.3 |
0.3 |
0.3 |
0.3 |
0.3 |
vacuum degree |
-0.096 |
-0.096 |
-0.096 |
-0.096 |
-0.096 |
-0.096 |
Evaporation rate kg/n |
160 |
300 |
500 |
800 |
1200 |
2000 |
Energy consumption kg/n |
168 |
315 |
525 |
840 |
1260 |
2100 |
Motor power KW |
1.1 |
2.2 |
3 |
5.5 |
7.5 |
11 |
Rotational speed (rpm) |
161 |
161 |
131 |
112 |
85 |
85 |
Equipment height mm |
2500 |
3295 |
4100 |
5180 |
5800 |
7800 |
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If the concentrated and distilled organic solvent must be recovered or distilled, the rotary scraper evaporator can also be combined with the condenser and distillation tower to form a concentration and distillation unit. |
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