熔融結晶器（靜態(tài)/動態(tài)降膜式）/Melt crystallizer（Static / dynamic falling film type）
熔融結晶目前在中國未大范圍應用，因此沒有多值得借鑒的工程經驗，所以我司熔融結晶器設計要基于天津科技大學結晶過程研究室的熔融結晶工藝開發(fā)。請點擊熔融結晶工業(yè)應用產品統(tǒng)計，也可直接點擊網(wǎng)站結晶技術博客查閱相關熔融結晶工藝開發(fā)及設備信息。
Melting crystallizer has not been widely used in China at present, so there is no more engineering experience for reference. Therefore, our design of melt crystallizer is based on the melt crystallization process of the Crystallization Process Research Institute of Tianjin University of Science and Technology. Please click on the melt crystallization industrial application statistics, or the website of crystallization technology blog to obtain the relevant melt crystallization process development and equipment information.
應用范圍/Applied Range
熔融結晶器應用于化工中間體、醫(yī)藥中間體、生化制品的高純度晶體產品的生產。
Melt crystallizer is widely used in the production of chemical intermediates, pharmaceutical intermediates and high purity crystal products of biochemical products.
產品分類/Product Classification
可分為靜態(tài)熔融結晶器和動態(tài)塔式降膜熔融結晶器兩種。
It can be divided into two types: high-efficiency static melt crystallizer and dynamic tower falling film melting crystallizer
結晶器材質/Material
根據(jù)物料特性可用材質分為：碳鋼、不銹鋼及特殊金屬材料。
carbon steel, stainless steel and special metal materials.
熔融結晶器優(yōu)點/Advantages
① 實用性強，針對不同的工藝要求選用不同類型的設備。
strong practicability, and different types of equipments are selected according to different technological requirements
② 投資費用低，價格僅為國外同類價格的1/5-1/10；國內價格的1/2-1/6。
Low investment cost, the price is only 1/5-1/10 of the same price abroad; 1/2-1/6 of the domestic price
③ 操作彈性大，可自動控制也可手動操作。
Operation flexibility, automatic control and manual operation are both ok.
④ 設備緊湊、合理。
compact and reasonable
⑤ 實際應用效果好，結晶損耗低。
good application effect and low crystallization loss
⑥ 應用熔融結晶工藝可以使有些復雜的工藝變得尤其簡單。
Some complex processes become especially simple
熔融結晶器缺點/Disadvantages
結晶器的結構相對精餾塔來說，略復雜。需要發(fā)汗、洗滌等步驟。過程較復雜，過程的連續(xù)化較困難。
The structure of the mold is a little more complicated than that of the distillation column. It needs Sweating, washing, etc. The process is complex and difficult to be continuous.
相對于其它熱分離單元操作，熔融結晶具有如下優(yōu)點：
Compared with other heat separation units, melt crystallizer has the following advantages:
高選擇性、低能耗、操作溫度低、無溶劑、無廢液、無氣相。熔融結晶與精餾相比較，具有操作溫度低、所需能耗小等突出優(yōu)點。除以上兩點外，第三點就是可以利用工廠里其它操作單元所產生的廢熱。因為現(xiàn)有的大部分有機化合物的熔點都在工廠廢熱溫度范圍內。
High selectivity, low energy consumption, low operating temperature, no solvent, no waste liquid, no gas phase. Compared with distillation, it has many advantages, such as low operating temperature and small energy consumption. Besides, Waste heat from other operating units in the plant can be utilized. Because most of the organic compounds’ melting point is in the range of the waste heat in the factory.
熔融結晶與溶液結晶相比較，由于沒有添加新的溶劑，所以避免了溶劑的后處理過程，這個優(yōu)點往往可以彌補熔融結晶的其它缺點。
Compared with solution crystallization, melt crystallization avoids the post treatment process of the solvent without adding new solvent, and this advantage can often compensate for other shortcomings of the melt crystallization.
熔融結晶處理的是液態(tài)物質，液態(tài)相對于氣態(tài)而言，所需要的體積小，所用設備體積小，投資少。當然，如果熔融結晶需要長的停留時間時，則這點優(yōu)勢就不明顯了。熔融結晶過程沒有氣體產生，泄露易于控制。而且整個設備可密閉，有利于環(huán)境安全。熔融結晶不需要添加任何物質，所以沒有廢液和其它化學物質（溶劑）產生。要知道，溶劑回收的成本往往占整個結晶成本的大部分。對于非固體溶液型體系，從理論上來說，結晶過程具有高的選擇性和可以高達100%的產品純度。
Melt crystallizer deals with liquid substance, which requires a small size and a small amount of equipment, therefore needs less investment. However, if melting crystallization takes longer residence time, then this advantage is not obvious. During crystallization, no gas is produced, and leakage is easy to control. Moreover, the whole equipment can be closed and is more conducive to environmental safety. Molten crystallization does not require the addition of any substance, so no waste liquid or other chemical substance (solvent) is produced. The cost of solvent recovery often accounts for most of the cost of the crystallization process. For the non solid solution type system, the crystallization process has very high selectivity and the purity of the product can be as high as 100%.
