Microwave rotating thin film concentrator

Abstract

The invention discloses a microwave rotating film concentration device, comprising a sealing tank body (1), a rotating evaporator (2), a microwave device (3), a solution feeding tube (4), a concentrated liquid discharging tube (5), condenser (6), a microwave shielding device (7), a stirring motor (8) and a vacuum system; wherein the evaporating surface of the rotating evaporator (2) is conical or round, the angle a between the axis of the evaporator and the horizontal plane is 0 to 90 degree, the rotating evaporator (2) adopts a magnetic stirring device to be connected with the external stirring motor (8), which is arranged in the center of the sealing tank body which is provided with a cover which can be opened and closed, the cover is provided with a sight glass (9). The concentration device solves the problems of the present equipments in the process of concentrating extraction liquid, such as the low evaporating speed, the high concentrating temperature, the decomposition of feed solution caused by long-term heating, decompression operation being impossible because of the blasting boiling of feed solution, the low energy utilization ratio, the large dead volume of equipment, and the equipment being difficult to be cleaned, thus the invention has a wide applied prospect.

Description

technical field [0001] The invention relates to a concentration device, in particular to a microwave rotary film concentration device. Background technique [0002] Concentration technology is widely used in the evaporation of liquids and the crystallization of compounds, mainly in atmospheric pressure concentration, reduced pressure concentration and freeze-drying methods. The main way of decompression is to reduce the evaporation temperature of the material under reduced pressure, and after the thermal energy is supplied to the liquid, the solvent is evaporated, so as to effectively increase the concentration and promote the crystallization. [0003] Traditional single-effect concentrators and multi-effect concentrators have long heating time and low heat transfer efficiency, and the active ingredients are exposed to high-temperature environments for a long time, causing decomposition; traditional heat exchangers use plate or tube methods, and the surface is difficult to ...

AI Technical Summary

Problems solved by technology

[0003] Traditional single-effect concentrators and multi-effect concentrators have long heating time and low heat transfer efficiency, and the active ingredients are exposed to high-temperature environments for a long time, causing decomposition; traditional heat exchangers use Plate or tube method, the surface is difficult to clean and easy to structure, resulting in low heat transfer efficiency and serious heat loss; at the same time, when the material is evaporated, the bubbles will cause serious bumping, and the material liquid is often lost. In order to achieve effective concentration, it must be Appropriately reducing the vacuum degree will further cause the concentration speed to be slow and the loss of components will increase

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