40L/hr 160L/hr 320L/hr 500L/hr Plant crude oil extraction machine falling film evaporator for ethanol recovery

40L/hr  160L/hr 320L/hr 500L/hr Plant crude oil extraction machine falling film evaporator for ethanol recovery

A = Product B = Concentrate C = Condensate D = Heating steam E = Vapour 1 = Head 2 = Calandria 3 = Separator 4 = Separator duct 5 = Calandria base

——Design

A vertical shell-and-tube heat exchanger, with a laterally or concentrically arranged centrifugal separator.

 ——Operation 

The concentrated liquid is supplied to the top of the heating tubes and distributed in a way as to flow down the inside of the tube walls as a thin film. The liquid film starts to boil due to the external heating of the heating tubes and is partially evaporated as a result. The downward flow, caused initially by gravity, is enhanced by the parallel, downward flow of the vapour formed. Residual film liquid and vapour is separated in the lower part of the calandria and in the downstream centrifugal droplet separator. It is essential that the entire film heating surface, especially in the lower regions, be wetted with liquid evenly and sufficiently. Otherwise, dry spots will result that will lead to incrustation and the build-up of deposits.

For evenly distribution, it is important that a suitable distribution system is selected for the head of the falling film evaporator. Wetting rates are increased by using longer heating tubes, dividing the falling film evaporator into several compartments or by recirculating the product.

 ——Particular features 

Better product quality – due to gentle evaporation, mostly in vacuum, and extremely short residence times in the falling film evaporator.

High energy efficiency  – due to more tubes or heating by heat pump compressor, based on the lowest theoretical temperature difference.

Flexible operation – quick start-up and easy switchover from operation to cleaning.

 ——Fields of application 

Relatively small floor space requirement.

Particularly suited for temperature-sensitive products.

For liquids which contain small quantities of solids and low moderate tendency to form incrustations.

Models of falling film evaporator: Ehanol extraction speed: 40L/hr, 160L/hr, 320L/hr, 500L/hr, 1000Lhr

For extraction process, Liquid film is the main factor that influence the evaporation speed. 

The proportion of height and diameter should be calculated strictly. The diameter and quantity of evaporation tubes also should be designed based on the required evaporation speed. 

The falling film can low the content of ethanol in the crude oil to 3% -- 5%

Our falling film is based on the customer's requirement, after calculating, we design falling film evaporator, then show the drawing to customer for confirmation.

Customized two-stage 320L falling film evaporator for one of our customers.

Wiped film evaporator

Thin film evaporator

Our wiped film evaporator, falling film evaporator, thin film evaporator comes with recommend set point, much easier for freshman.

Henan Effison Trading Co., Ltd

Add: Jinjv Road, High-tech Industrial Development Zone, Zhengzhou,Henan Province, China

Tel: 86-15617958585

Whatsapp: 8618516380382

Skype: michael.du8

Hours: 9 AM to 6 PM (Beijing Time), leave us a message and we can contact you out of our regular hours