中药厂水提液浓缩系统节能改造技术蒸发水量大学学位论文.doc

摘要 1﹕5GMP标准要求。升膜蒸发器适宜处理蒸发量较大，热敏性，粘度不大及易起沫的溶液，但不适于高粘度、有晶体析出和易结垢的溶液。在不同的蒸发器中达到相应的浓度，经过分离式分离，然后进入下一效升膜蒸发器，最后获得所需要的药剂浓度。升膜蒸发器的构成是液体根据虹吸泵的原理进入加热管加热，流入到分离器后液体与蒸汽分离开来，通过循环管流回到蒸发器，形成闭路循环，这种蒸发器又称外循环蒸发器。与升膜蒸发器结构基本相同，主要区别在于原料液是从加热室的底部进入，料液进入加热管后，受热沸腾迅速汽化；蒸汽在管内迅速上升，料液受到高速上升蒸汽的带动，沿管壁形成膜状上升，并继续蒸发。产生的蒸汽与液相共同进入蒸发器的分离室，汽液经充分分离，低温位的蒸汽经压缩机压缩，温度、压力提高，热焓增加，然后进入换热器冷凝，以充分利用蒸汽的潜热，液相则由分离室排出[1]。 本系统达到了预定药剂的浓度要求，生产效率较之前的降膜蒸发器有所提高，蒸发量也有所提高，升膜蒸发器适宜处理蒸发量较大，热敏性，粘度不大及易起沫的溶液，但不适于高粘度、有晶体析出和易结垢的溶液，采用升膜蒸发器，蒸发效率更高，加上PLC控制系统，浓度精度控制更加精确，有很大的使用价值，市场前景广阔，实现了自动化的生产[2]。 关键词： 四效升膜蒸发器； 中药； 蒸发效率； 浓度 Abstract With the improvement of peoples living standards, more and more emphasis on the use of drugs, traditional Chinese medicine because of its toxic side effects, and concern for the health and quality of Chinese medicine are increasingly being everyones attention. Use rising film evaporator to obtain the desired end product of traditional Chinese medicine, Chinese medicine has become the first choice for the finished product. This article is the use of climbing film evaporator system research is to study the climbing film evaporator design. 5,000 years of Chinese medicine is a treasure of traditional culture, thousands of years of medical practice is the crystallization of the worlds best is the essence of culture. Traditional Chinese medicine industry after decades of development, already has a certain scale and research and development capabilities, has made certain achievements in Chinese herbal medicine, Chinese medicine Pieces, and other aspects of the dosage form. However, with the continuous improvement of peoples living standards, and the new concept of health production, the rapid growth of the domestic market demand for traditional Chinese medicine, strengthening the competitiveness of Chinese development is facing enormous challenges and opportunities. The four effect rising film evaporator, with four evaporation and separators, pharmaceutical dope through four different evaporator, the t