Multi effect distilled water machine equipment

The injection water preparation system is a key GMP system. Multi effect distilled water machine equipment is currently a key device widely used in injection water preparation systems. Adopting high temperature and high pressure operation to ensure stable production of injection water without heat source. The distilled water produced by the multi effect distilled water machine equipment meets the requirements for injection water in the current United States Pharmacopoeia, European Pharmacopoeia, Japanese Pharmacopoeia, and Chinese Pharmacopoeia.

feature
1. Structural material: The pressure vessel body and pipeline in contact with distilled water and secondary pure steam are made of 316L, and the sealing material is PTFE. Other materials include the rack made of 304 material.
2. Double tube plate design: The external preheater, condenser, and high-efficiency evaporator are all designed with double tube plates, which comply with cGMP requirements and effectively eliminate the possibility of low hygiene level medium pollution in the system.
3. Electrochemical polishing: Electrochemical polishing of stainless steel surface to ensure the quality of production injection water and improve the service life of equipment.
4. Insulation: The evaporator and preheater are both insulated with mineral wool insulation layer that is chlorine free and asbestos free, and wrapped with stainless steel cladding.

5. Economic energy saving: The multi effect distilled water machine has a high utilization rate of industrial steam due to the gradual utilization of secondary steam in each effect, and has a significant energy-saving effect. As the number of evaporator efficiencies increases, the energy-saving effect becomes more pronounced. At the same time, the amount of cooling water also decreases significantly with the increase of efficiency.
6. 3D bend pipe: Use stainless steel pipes as much as possible to directly stretch the bend pipe on the pipeline, avoiding welding.
7. Use automatic welding: For the connection between pipelines and parts, use automatic argon gas protection trajectory welding as much as possible to ensure welding quality.
8. Factory testing of complete machine performance: In the complete machine testing workshop, simulate the actual working environment according to the determined program, and conduct complete machine testing. Only economical material water pretreatment is required: no expensive purified water equipment is needed, and only deionized water or reverse osmosis water with a conductivity of less than 5 μ S/cm is needed for the raw material water.
10. The heat exchange tubes are made of high-quality seamless tubes: seamless tubes have better strength and durability, ensuring that they remain in good condition during the thermal expansion and contraction processes of processing, welding, expansion and operation, and preventing any industrial steam, raw water and cooling water from leaking into the clean distilled water and secondary steam side.
11. Control system: Adopting PLC automatic control technology to meet different control requirements of customers. From the basic judgment and distribution of distilled water quality, to more advanced aspects such as continuous adjustment of various media, linkage with storage systems, graded password control, and even control of evaporation rate changes, it can be said that it is meticulous.
12. Paperless recording: Using paperless recording method to truthfully record the production situation.
13. Three stage separation device: The raw water entering the equipment undergoes three-stage separation through falling liquid film evaporation, gravity separation, and special separation device.

Multi effect distilled water machine equipmentWorking Principle:
The process is as follows:
The raw water is heated by industrial steam in the first effect preheater, and after entering each effect preheater, it is further heated by secondary steam; The condenser is heated by secondary steam and distilled water; Then, at the top of the evaporator, it is evenly distributed into the evaporator tubes through a water separation device, forming a thin film like water flow inside the evaporator tubes; These water flows are quickly evaporated due to their thinness, producing secondary steam; The raw water that has not been evaporated is transported to the next effect as the raw water for the secondary effect evaporator. Similar to this, the raw water that has not been evaporated will enter the next effect. If it has not been evaporated until the next effect, it will be discharged as condensed water; The raw water that has been evaporated is now secondary steam, which continues to spiral upwards in the evaporator, passes through a special separation device in the middle and upper parts, and enters the pure steam pipeline as a secondary heat source; The secondary steam condenses into distilled water after absorbing heat in the secondary effect; The process of each effect is similar to this. The distilled water of each effect and the secondary steam of the final effect are collected by the condenser, and after heat exchange with the cooling water and raw material water, they are cooled to become distilled water; After online detection of conductivity, qualified distilled water is output as injection water, and unqualified distilled water will be discharged.
The secondary steam converted from raw water is clean steam, which undergoes three separation processes: after entering the evaporator initially, it flows down the tubes and evaporates simultaneously, which is the * separation process; The evaporated raw water (secondary steam) is turned back 180 degrees at the lower end of the evaporator, and impurities are separated to the lower part by gravity, which is the second separation; The evaporated raw water, i.e. secondary steam, continues to spiral upwards in the evaporator and reaches the special separation device in the middle and upper parts for the third separation. The cooling water only passes through the condenser to cool down the distilled water produced by each effect and the secondary steam of the final effect. Industrial steam heats the raw water in the high-efficiency evaporator and preheater, and the heat is absorbed and discharged as condensed water outside the machine. In the condenser, there is a portion of gas that cannot condense into water, called non condensable gas, which will be removed by the exhaust device installed on the upper part of the condenser. Depending on the model, non condensable gas continuous discharge devices may also be installed on each evaporator.
1. Industrial steam
2. Discharge of condensate water
3. Concentrated water discharge
4. Cooling water outlet
5. Distilled water
6. Cooling water inlet
7.原料水入
8. Non condensable gas emissions