The function of single-effect falling film evaporator is to separate the ethanol from material and condense and recover it through reduced pressure vacuum and evaporation. The single-effect falling film evaporator used for ethanol solution production is different from the general single-effect falling film evaporator used for aqueous solution production. Ethanol has a low boiling point and is volatile. Ethanol can be evaporated easily under vacuum and reduced pressure, so it has a small evaporation area. It is difficult to condense and recover ethanol vapor, so the heat exchange area of the condenser is relatively large. In order to obtain a good cooling effect, two or more stages are often used for cooling recovery, which is also different from the general aqueous solution evaporation.
Theory of falling film evaporation
The materials are evenly distributed into each falling film pipe through the distributor, and flow down the wall of the pipe in the state of a liquid film. Under the action of gravity and the secondary steam flow, the materials get evaporated while flowing down. At the bottom of the falling film tube, the materials and secondary steam are basically separated, and they reach the separation chamber to achieve complete separation.
The structure of FFE-200 single-effect falling film
S01——Evaporation and separation chamber
E01——Tube heater E02——Tube condenser
E03——Coil condenser E04——Vacuum pump cooler
V01——Middle tank V02——Ethanol collection tank
P01——Feeding pump P02——Concentrate discharge pump
P03——Discharge pump of ethanol P04——Water ring vacuum pump
Working process of falling film evaporator
Feeding(V01) – evaporation(E01) – separation(S01) – condensation(E02) – cooling (E03) – storage tank (V02)
Features of falling film evaporator
1. Low heating temperature
2. High evaporation speed
3. Short liquid residence time
4. Continuously feeding and discharging
5. Suitable for heat sensitive materials
Single-effect falling film evaporator
|Discharge pump 1||0.55||0.55||1.1||1.5||1.5||1.5|
|Discharge pump 2||0.55||0.55||1.1||1.1||1.5||1.5|
|Water ring vacuum pump||0.75||0.81||0.81||1.5||2.2||3.85|
|Power supply||220V/60Hz Three-phase power,Other component could be customized|
Note : Discharge pump 1: for concentrate discharge pump 2: for ethanol
Diagram of product details
1. Coil distributor is designed properly, and the cloth is distributed evenly.
2. It adopts tube cooler and coil cooler, which have a better effect.
3. Evaporation and separation chamber is designed with a wide view, which users can watch the evaporation process through.
4. Feeding pump and discharge pump adopt waterproofing structure, which can discharge materials at negative pressure. Pumping air does not damage the equipment.
5. Water ring vacuum pump is equiped with cooling water tank, which can offer feeding pump/discharge pump shaft seal water supply.
1. Heat supply to achieve ethanol evaporation: steam boiler, circulating oil bath tank and so on.
2. Cooling supply to achieve ethanol recovery: cooling tower, chiller, refrigerating machine and so on.
3. Storage tank to store ethanol
Single-effect falling film evaporator is widely used in food, dairy, chemical, pharmaceutical, biological engineering, environmental protection engineering and corn deep processing, such as for aqueous solutions, organic solvent solutions, fruit and vegetable juices, milk, eggs, vitamin C, collagen , Tea immersion liquid, sodium glutamate and other evaporative concentration. It is especially suitable for evaporative concentration of heat-sensitive materials, and the beneficial elements of the material can be protected to the greatest extent during the heating and evaporation process.
Working process and workplace
Production process: blanking, welding, grinding, polishing, assembly, packaging.
1. Offer 24-hour technique consulting service;
2. Offer professional quotation information;
3. Offer detailed product performance description;
4. Technique personnel can offer customers reasonable advice to help them choose the right models according to products usage situations.
5. Offer customers the matched equipment information according to their requirements.
1. Supervise the whole manufacturing process, and the qualified rate of raw materials entering the factory can reach 100%;
2. The whole process of product manufacturing is carried out in strict accordance with the requirements of the product manufacturing guarantee procedures, and the qualified rate of the factory products reaches 100%;
3. Provide customers with key node inspection records of products;
4. Regularly provide users with photos of production progress;
5. Products are packed and transported strictly in accordance with export standards;
6. Provide product transportation logistics progress information in time.
1. Provide targeted installation by using videos / drawings / pictures and other materials;
2. Under the premise of correct installation, normal maintenance and use, the warranty period of the sold products is 1 year.
3. After the product warranty period expires, the product sold will be subject to a lifetime warranty. For replacement of the standard parts of the product, the sealing parts will only be charged for the cost;
4. During installation and commissioning process, our company’s after-sales service personnel will communicate with users regularly to keep abreast of the operating status of our products. Assist in installation and commissioning will continue until the end of commissioning and user satisfaction;
5. During the operation of the equipment, the temporary faults will be promptly answered after receiving customer feedback. After receiving the maintenance notice, we will reply within 1 hour, and solve the solution within 24 hours;
6. Free lifetime technical support. From the day when the equipment starts to be operated, we will conduct a satisfaction survey and inquire about the operation of the equipment by telephone or email every six months, and record the records of the understanding;
7. Provide assistance in solving problems such as equipment damage during transportation.
1. Why is single-effect falling film evaporator commonly used for ethanol recovery?
Ethanol has low heat content and is volatile, so it is not suitable for multi-effect falling film evaporator.
2. What is the feed temperature of the single-effect falling film when recovering ethanol?
It is recommended to be above 20 ℃, if the low temperature material liquid can add a preheating device before the cloth.
3. How much is the steam pressure in the heating chamber controlled?
The steam pressure is controlled within 0.2MPa, and the temperature is within 130 ℃.
4. How to control the steam temperature?
By adjusting the steam pressure to adjust the steam temperature, the temperature changes with the pressure.
5. What material is the single effect falling film evaporator, can it be made of 316 material?
Hygienic grade 304 material. According to customer needs can be made of 316 material.
6. Is the single-effect falling film evaporator controlled automatically or manually?
Manual control. According to customer needs can make automatic control system.
7. Can 200L single effect falling film evaporator be sent by air?
After special packaging design, it can be sent by air.
Package and delivery
1. Professional design team can provide customized services.
2. Professionally designed products for ethanol recovery.
3. Can provide equipment drawings, installation instructions, operating instructions and so on.
4. Can provide matched heat and cold sources.
5. The solution of low-temperature ethanol extraction (CBD extraction) can be systematically solved.