industrial pharmaceutical falling film evaporation concentrator

Short Description:

Principle

The raw material liquid is distributed into each evaporation pipe unfirmly, under the function of gravity, liquid flow from top to bottom, it becomes the thin film and heat exchanging with steam. Generated secondary steam go along with the liquid film, it increases the liquid flow speed, heat exchanging rate and reduces the retention time. Fall film evaporation fits for heat sensitive product and there’s very less product loss because of bubbling.

Send email to us

Product Detail

Product Tags

Evaporator Type

Falling film evaporator	Used for low viscosity, good fluidity material
Rising film evaporator	Used for high viscosity, poor fluidity material
Forced-circulation evaporator	Used for puree material

For the characteristic of juice, we select the falling film evaporator. There are four types of such evaporator:

Parameters

Item	2 effects evaporator	3 effects evaporator		4 effects evaporator	5 effects evaporator
Water evaporation volume (kg/h)	1200-5000	3600-20000		12000-50000	20000-70000
Feed concentration (%)	Depend on material
Product concentration (%)	Depend on material
Steam pressure (Mpa)	0.6-0.8
Steam consumption (kg)	600-2500		1200-6700	3000-12500		4000-14000
Evaporation temperature (°C)	48-90
Sterilizing temperature (°C)	86-110
Cooling water volume (T)	9-14		7-9	6-7		5-6

Construction

A double-effect falling film evaporator is composed of following components:

- Effect I / Effect II heater;

- Effect I / Effect II Separator;

- Condenser;

- Thermal Vapor Recompressor;

- Vacuum System;

- Material Delivery Pump: material delivery pumps of each effect, condensate discharging pump;

- Operation platform, electrical control system, pipelines and valves and etc.

Features

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

2 High energy efficiency due to multiple-effect arrangement or heating by thermal or mechanical vapour recompressor, based upon the lowest theoretical temperature difference.

3 Simple process control and automation due to their small liquid content falling film evaporators react quickly to changes in energy supply, vacuum, feed quantities, concentrations, etc. This is an important prerequisite for a uniform final concentrate.

4 Flexible operation quick start-up and easy switchover from operation to cleaning, uncomplicated changes of product.

5. Particularly suited for temperature-sensitive products.