Challenges and Solutions in the Chemical Industry

Challenge ➢ Process consistency despite fluctuations in raw materials

In chemical processes, the properties of raw materials often fluctuate: the bulk density and flow behavior of powders, as well as the density, viscosity, temperature, and reactivity of liquids and pastes, can have a significant impact on the dosing process. In practice, this leads to unstable feed rates, dosing deviations, and increased control requirements—especially in continuous applications where deviations immediately affect the process.

In addition, different discharge devices (e.g., screws, vibrating chutes, conveyors, or pumps) must interact reliably to ensure process stability. Depending on the product, product activation may also be necessary to ensure a stable material flow.

The DEMIC Solution

The DE-CON/U controllers are specifically designed for gravimetric dosing systems based on the “loss-in-weight” principle; they perform control and weighing functions and also manage the refilling process. In doing so, they automatically account for various discharge devices and product activation methods to continuously achieve optimal dosing results.
For bulk materials and powders, the DE-CONscrew dosing controller can also be used: It supports both gravimetric and volumetric operation of differential scales, operates adaptively, and can control additional components for product activation and dust prevention (e.g., filters/exhaust systems).

Challenge ➢ Precise addition of additives and reactants

Many chemical products are produced using precisely defined mixing ratios: Additives, catalysts, stabilizers, pigments, or functional substances often need to be introduced into a main stream in small quantities—either continuously or in batches. Even minimal deviations can affect yield, specifications, the reaction process, or the reproducibility of batches.

Especially with very small dosing quantities, the demands on repeatability and control increase. In such cases, not only is the dosing technology crucial, but also a control system that reliably filters out disturbances and dynamically stabilizes the dosing.

THE DEMIC SOLUTION

Gravimetric dosing measures the actual mass regardless of material density and flow properties, making it particularly precise—a key advantage over volumetric methods when accuracy and reproducibility are critical.
Microdosing plays an important role for very small quantities—especially in the chemical industry. The goal is to dose extremely small volumes of liquids or powders with high accuracy and repeatability.
In addition, DEMIC control solutions support the dosing of pastes and liquids, take density, viscosity, temperature, and reaction behavior into account, and can control various pump types as well as trace heating systems; weighing of the entire dosing system is included as standard.

Solutions: Intelligent Dosing and Control Technology for Stable Chemical Processes

Precisely coordinated dosing, weighing, and control systems are essential for the reliable processing of bulk materials, powders, pastes, and liquids. DEMIC offers control solutions designed for various discharge devices that reliably regulate the dosing process, including refill phases.

Gravimetric dosing combined with intelligent control technology forms the foundation for robust processes: The actual mass flow is continuously monitored, and deviations are actively compensated—ensuring stable process windows, reproducible quality, and more efficient operations in both continuous and batch applications.

Ansprechpartner von DEMIC Datentechnik GmbH

Your Contacts

Björn Demmer

Partner - Managing Director

PHONE: 02247 918 90
EMAIL: bdemmer(at)demic-datentechnik.de

Heinz Demmer

Partner - Managing Director

PHONE: 02247 918 90
EMAIL: hdemmer(at)demic-datentechnik.de

FAQs About the Chemical Industry

Because mixing ratios, reaction behavior, and product properties depend heavily on the exact amount added—any deviations can quickly affect specifications and reproducibility.

Gravimetric dosing measures the actual mass regardless of density or flow properties, making it particularly precise.

In the loss-in-weight principle, the mass flow is determined and controlled based on the weight loss at the dosing system; the control system also manages refilling processes.

DEMIC controllers regulate the upstream refilling process and factor refilling phases into the control algorithm to ensure consistently stable dosing results.

Control solutions are designed for bulk materials, powders, pastes, and liquids.

Density, viscosity, temperature, and reaction behavior all influence the dosing process; DEMIC takes these factors into account and supports various pump types as well as trace heating systems.

About Microdosing: The goal is to dispense extremely small volumes of liquids or powders with high accuracy and repeatability—which is also relevant in chemistry.

DE-CONscrew provides adaptive control of differential scales (bulk materials/powders), supports gravimetric and volumetric operation, and can automatically adjust performance.

DE-CONscrew can control additional components for product activation and dust prevention (e.g., filters/suction systems).

DEMIC focuses on innovative solutions for continuous dosing and batch weighing, as well as comprehensive system solutions covering dosing devices, controllers, drive technology, load cell systems, and operator terminals.