Name: Forced Circulation Evaporator
Brand: Gausin International Engineers Pvt. Ltd.
Availability: InStock

Product Overview

The Gausin Forced Circulation Evaporator (FCE) uses a circulation pump to drive liquid through heat exchanger tubes at high velocity. This design is ideal when natural circulation or film evaporators cannot handle viscous, fouling, or crystal-forming feeds.

The pumped circulation keeps solids in suspension, minimizes scale on tube walls, and allows operation at higher concentration factors. FCE systems are widely used in chemical, distillery, textile, and pharmaceutical industries.

Each system is custom-engineered with CHEMCAD simulation and robust mechanical design for continuous 24/7 operation with optional multi-effect and vacuum configurations. Thermo Vapour Recompressor (TVR) integration is available to compress vapour from an effect and reuse it as heating steam, improving steam economy beyond standard multi-effect operation.

Forced Circulation

High-velocity pump circulation prevents scaling and maintains heat transfer.

Crystallizer Ready

Suitable for products that crystallize during concentration.

Wide Temp. Range

Operates from 40 to 120 deg C under vacuum or pressure.

Axial / Centrifugal

Circulation pump sized for your viscosity and solids loading.

Multi-Effect Option

Steam economy improved with double and triple effect layouts.

Thermo Vapour Recompressor (TVR)

Optional TVR uses motive steam in a steam jet ejector to compress low-pressure vapour for reuse as heating medium, reducing live steam consumption.

PLC/SCADA Control

Automated level, temperature, and vacuum control with data logging.

Technical Specifications

Process Parameters

Evaporation Capacity	1,000 to 30,000 L/hr
Operating Temperature	40 - 120 deg C
Operating Pressure	Vacuum to 3 bar (g)
Circulation Pump	Axial / Centrifugal
Feed Type	Viscous / Scaling / Crystallizing
Effects	Single to Multi-Effect

Construction Details

Material of Construction	SS 304 / SS 316L / Ti / Hastelloy
Heat Exchanger	Shell & Tube / Calandria
Separator	Vapour-Liquid Separator Vessel
Design Standard	ASME Sec. VIII / IS / IBR
Heating Medium	Steam
Inspection	Third-Party

Instrumentation & Controls

Control System	PLC / SCADA with HMI Touchscreen
Temperature Sensors	PT-100 RTD / Thermocouple (per effect)
Pressure Gauges	Diaphragm Type, SS Wetted Parts
Level Control	Magnetic Level Gauge + Level Transmitter
Flow Measurement	Electromagnetic / Coriolis Flow Meters
Density / Brix Control	Inline Refractometer / Density Meter
Vacuum System	Steam Ejector / Liquid Ring Vacuum Pump
CIP Connection	Full CIP Circuit with Spray Balls

Applications

Chemical

Caustic, NaCl, effluent, organic and inorganic solutions

Distillery

Spent wash and stillage concentration

Textile

Effluent and process liquor concentration

Agro

Starch and agro-processing liquors

Pharma

API and intermediate concentration

Sugar

Syrup and massecuite applications

Dairy

Milk, whey, cream, and dairy effluent concentration

Food & Beverages

Juices, sauces, concentrates, and beverage base processing

Key Advantages

Handles Difficult Fluids

Ideal for feeds that foul, scale, or crystallize in standard evaporators.

Stable Heat Transfer

Forced flow maintains consistent heat transfer coefficients.

Continuous Operation

Designed for long runs with minimal shutdown for cleaning.

Code Compliance

Built to ASME, IS, and IBR requirements with full documentation.

Process Flexibility

Wide operating range for varying feed concentrations.

Thermo Vapour Recompressor (TVR)

Optional TVR compresses effect vapour with motive steam in a steam jet ejector and reuses it as heating medium, cutting live steam use and improving energy efficiency versus standard multi-effect operation alone.

Axial Flow Pump

Axial flow circulation pumps deliver high flow at moderate head, keeping tube velocity high to prevent fouling and scale while handling viscous or solids-containing process liquors efficiently.

How It Works

Feed & Preheat

Feed liquor is preheated and introduced to the circulation loop at controlled flow rate.

Forced Circulation

A circulation pump drives liquid through the heat exchanger tubes at high velocity, preventing deposition.

Evaporation

Steam on the shell side evaporates water from the circulating process fluid in the tube-side circuit.

Separation

Vapour and concentrated liquid separate in the vapour body; vapour proceeds to condensing or next effect.

Product Discharge

Concentrated product is withdrawn at set density or concentration; crystals may be harvested where applicable.

Thermo Vapour Recompressor (TVR)

Where TVR is installed, high-pressure motive steam enters a steam jet ejector that compresses low-pressure vapour from the effect, raising its pressure and temperature. The compressed vapour is returned as heating steam to the same or a preceding effect, reducing live steam demand and improving overall plant energy efficiency.