Visualization and control of the processes of refrigeration and sublimation at SD Guthrie International Zwijndrecht Refinery's multi-vegetable oil processing factory

SD Guthrie International Zwijndrecht Refinery is a Dutch multi-vegetable oil processing factory.

It is part of Malaysia-based SD Guthrie. The Zwijndrecht factory was started by Samuel van den Bergh and Anton Jurgens in 1911 as a soap factory.

SD Guthrie International Zwijndrecht Refinery

Today, the factory has all key oil-processing techniques at one location, which allows flexibly changing the melting behavior of oils. Therefore, tropical oils are modified to create ingredients perfectly tailored to customers' needs, which opens access to a broader range of oils and fats.

In their own words

Our mission is to supply (non-)food and feed manufacturers with trusted vegetable oils and fats, combining uncompromising quality, rigorous safety standards, and unrivaled service reliability.

Our dedication goes beyond producing oils. We're committed to ensuring sustainability at every step. Quality and food safety have our highest priority. We monitor every step of the process to prevent contaminations like MOSH/MOAH from ending up in the finished product. We make sure that you have a quality product.

Source: sdguthrie-international.nl

Control system

In 2024 and 2025, FOPRO implemented a system for the control and visualization of the processes of refrigeration and sublimation at the Zwijndrecht factory. It consists of six Siemens SIMATIC PLCs and the Reliance SCADA system.

Specifically, the system monitors and controls:

• Central refrigeration plantroom (NH₃)
• 2 NH₃ compressors
• 3 vacuum-pump sets
• 3 steamers

The following special features are also part of the control system:

• Multiscreen setup (4 screens on a 4K monitor)
• Sublimator control

Examples of visualization windows

Reliance’s main multiscreen setup

Reliance’s multiscreen setup with PLC inputs and outputs

Reliance’s multiscreen setup with a trend

Sublimator data

Compressor data

Steamer data

Hot-water data

Vacuum-pump data

Reliance’s main multiscreen setup

Reliance’s multiscreen setup with PLC inputs and outputs

Reliance’s multiscreen setup with a trend

Sublimator data

Compressor data

Steamer data

Hot-water data

Vacuum-pump data