How does forced circulation evaporator achieve an efficient and energy-saving evaporation process in the pharmaceutical and chemical industry?
Publish Time: 2025-02-17
In the pharmaceutical and chemical industry, forced circulation evaporator is a key equipment to achieve an efficient and energy-saving evaporation process. It mainly uses the power of the forced circulation pump to make the material circulate at high speed in the heating tube to achieve efficient evaporation. The following are the specific ways to achieve efficient energy saving.Optimized material circulation designIn the forced circulation evaporator, the reasonable selection and operation of the circulation pump. This high-speed flow not only enhances the heat transfer coefficient, but also effectively prevents the material from scaling and crystallizing on the surface of the heating tube, ensuring the continuous and efficient operation of the evaporator. Moreover, by accurately controlling the flow rate and head of the circulation pump, the residence time and number of cycles of the material in the evaporator can be optimized, thereby improving the evaporation efficiency.Make full use of secondary steamSecondary steam is an important energy source in the evaporation process. The forced circulation evaporator is equipped with equipment such as steam compressors or heat pressure pumps, which can increase the pressure and temperature of secondary steam so that it can be used as heating steam again. This steam recompression technology can significantly reduce the consumption of raw steam, generally saving 30% - 50% of steam consumption. In addition, by optimizing the design of steam pipelines and heat exchangers, it can ensure that the heat of secondary steam is fully recovered and utilized, reducing energy waste.Advanced heating technologyThe use of efficient heating tubes and heating methods can improve the thermal efficiency of the evaporator. For example, the selection of new heating tubes with high heat transfer coefficients, such as corrugated tubes, spiral groove tubes, etc., can increase the contact area and turbulence between the material and the heating tube, and enhance the heat transfer effect. At the same time, the reasonable arrangement of the arrangement and spacing of the heating tubes can make the material evenly heated in the heating tube, avoid local overheating or overcooling, and improve energy utilization efficiency.Accurate control systemThe advanced control system can automatically adjust the operating parameters such as the speed of the circulation pump, the flow rate and temperature of the heating steam according to the properties, flow rate, temperature and other parameters of the material. For example, when the material concentration changes, the control system can adjust the flow of the circulation pump in time to ensure the stable circulation of the material in the evaporator; when the heating steam pressure fluctuates, it can automatically adjust the opening of the steam valve to maintain a stable heating temperature. This precise control can keep the evaporator running under the best working conditions and avoid unnecessary consumption of energy.Application of multi-effect evaporation processThe use of multi-effect evaporation process in forced circulation evaporator can further improve energy utilization efficiency. Multi-effect evaporation is to connect multiple evaporators in series, and the secondary steam generated by the previous effect evaporator is used as the heating steam for the next effect evaporator. In this way, the latent heat of steam can be fully utilized, and the utilization rate of raw steam can be greatly improved. Generally speaking, the three-effect evaporation process can increase the utilization rate of raw steam to 2-3 times that of single-effect evaporation.Forced circulation evaporator has achieved an efficient and energy-saving evaporation process in the pharmaceutical and chemical industry by optimizing material circulation, making full use of secondary steam, adopting advanced heating technology, precise control system and multi-effect evaporation process, and has made important contributions to enterprises in reducing production costs, improving economic benefits and environmental protection levels.
