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Single effect external circulation concentrator
usage
This device is suitable for industries such as pharmaceuticals, biology, food, and chemical engineering. It is commonly used for evaporating traditional Chinese medicine extracts, fine chemical solutions, and other substances,
characteristic
a. The device has a compact structure and occupies a small area. Internal and external precision polishing, in compliance with GMP requirements
b. The equipment mainly consists of a heater, separator, defoamer, condenser, and liquid receiving tank.
c. Adopting normal/reduced pressure operation, the evaporation temperature is low and the speed is fast, and the configuration of each instrument valve is reasonable and convenient for operation.
Note: This parameter is for reference only, actual parameters are subject to the drawings.
(1) The arrangement of heat exchange tubes is a major factor affecting heat transfer efficiency: the heat exchange tube bundle is designed as a equilateral triangle arrangement, with the steam fluid facing the heat exchange tubes, and the fluid channel cross-section is small, which is conducive to increasing flow velocity and improving heat transfer. Efficiency.
(2) Design with baffles to allow steam fluid to pass horizontally through the tube bundle, improving convective heat transfer efficiency.
(3) An anti erosion device is designed at the inlet to prevent impact and steam diversion. Relieve the impact force of steam on the tube bundle, allowing the steam medium to flow evenly into the tube bundle, avoiding erosion and vibration of the heat exchange tubes.
(4) Reasonably calculating the design heating area, while ensuring the evaporation rate, allows the steam pressure of the shell side to operate at low pressure, reducing the saturation temperature of the shell side steam. The material will not coking on the inner wall of the pipe due to high temperature, and the temperature of the discharged steam condensate will be reduced. The sensible heat of the steam is fully utilized, and energy consumption will be reduced.
Guozhou Barrier
(5) Control the length to diameter ratio of the heating tube within a reasonable range, so that the heating tube is not too long and is completely immersed in liquid, avoiding the formation of a dry steaming section on the upper part of the heating tube, thus preventing the tube wall from coking easily.
Performance of the guide groove in the evaporation chamber: The inlet of the evaporation chamber is designed as a guide groove introduction method, which allows the gas-liquid mixture to enter the evaporation chamber in a completely tangential direction. The rotation speed of the gas-liquid mixture in the evaporation chamber increases, and the centrifugal force increases, making it easy to separate heavy liquids and light gases. The liquid rotates along the inner wall and flows downwards, while the gas is drawn away in space. The vapor liquid separation effect is good, so it is not easy to form foam and will not produce vibration. Because the liquid flows down along the inner wall in a film like manner, it expands the evaporation area inside the evaporator, accelerates evaporation, and improves evaporation efficiency.
