Online tons-level traditional Chinese medicine anti-wall-hanging evaporation and concentration device and operating method thereof

Abstract

The invention provides an online tons-level traditional Chinese medicine anti-wall-hanging evaporation and concentration device and an operating method thereof. A gas-liquid-solid three-phase natural circulation fluidized bed evaporation and concentration device in an industrial production scale in which the heating area of a heater is 18.9 m<2> and the evaporative power is 1100-1400 kg/h is determined. The inventions and innovations of a screen type discharging device, a 90-degree multi-section short-radius elbow connecting pipe and a demister on the upper part of a separation chamber are designed. At present, the production operation result of the industrial scale device of about 100-ton extracting solutions of Menopause Ease and other over ten traditional Chinese medicines proves that compared with a traditional two-phase flow evaporation concentrator with the heating area of 18 m<2> in a factory and an operating method thereof, the device and the method under approximate operation conditions have the advantages that the total heat transfer coefficient and evaporation intensity are improved, a wall hanging phenomenon of the two-phase flow evaporation concentrator is avoided, the wall hanging phenomenon existing in a traditional Chinese medicine extracting solution evaporation concentrator is eliminated, and high-efficiency continuous and stable operation is realized.

Description

technical field [0001] The invention relates to a traditional Chinese medicine evaporation and concentration device and an operation method, in particular to an industrial-scale traditional Chinese medicine online wall-hanging prevention evaporation and concentration device and an operation method. Background technique [0002] Scaling problems exist to varying degrees in heat exchange equipment in process industries such as medicine, chemical industry, petroleum, power, light industry, and food, especially in evaporation and concentration equipment. The presence of dirt reduces heat transfer efficiency, increases energy and material consumption, and may bring hidden dangers to safety and product quality. According to statistics, the economic losses caused by dirt in some industrialized countries account for about 0.25% of their gross national product. Therefore, the fouling problem is an important challenge in the research, design and application of heat exchange equipment...

AI Technical Summary

Problems solved by technology

However, this technology has the following problems: the technology, device and operation method are obtained under pilot scale conditions. The maximum evaporation capacity is 115kg / h, and the annual output is at the scale of kilotons; while the production of traditional Chinese medicine generally requires 1000kg / h or more The evaporation capacity, that is, the annual output is 10,000 tons. The existing pilot test technology and device system are difficult to meet the needs of industrial production for evaporation capacity. It is necessary to develop an annual production of 10,000 tons of industrial scale traditional Chinese medicine three-phase flow on-line anti-wall evaporation Concentration technology and device and operation method

[0003] Based on the above considerations, aiming at the common problem of wall hanging or fouling in the evaporation and concentration unit operation in the production process of traditional Chinese medicine, on the basis of the original pilot test work, combined with the fluidization technology, the patent application has invented a device that can inhibit the process of evaporation and concentration of traditional Chinese medicine. The industrial-scale evaporating and concentrating device and operation method of the existing fouling phenomenon, especially can solve the problem of evaporating and concentrating the Chinese medicine extract with high viscosity and high density, and there is no literature report related to this invention at home and abroad.

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