A major Turkish customer approached us with very specific requirements: we needed to make the handling of their main fluid—concentrated urea formaldehyde—comfortable, efficient, safe, and ergonomic.
What is this fluid? And how can we ensure a safe, ergonomic, and user‑friendly transfer process for the customer and their operators? Let’s find out together.
Uses of concentrated urea formaldehyde
Urea formaldehyde can be used in several ways:
1. Resin production, widely used as adhesives for:
• particle boards,
• plywood,
• MDF,
• other wood-based products.
2. Production of insulating foams in the building industry
3. Industrial binders and additives: formaldehyde, combined with urea, is used as a chemical intermediate in several industrial processes (resins and composite materials sector).
Fluid criticalities
However, moving urea formaldehyde involves multiple risks:
- Toxicity by contact and inhalation: it can cause skin, eye, and respiratory irritation; toxic if inhaled or absorbed through the skin;
- Possible carcinogenic and mutagenic effects, related to the presence of formaldehyde;
- Release of irritating vapours, especially if the product is hot or aerated during handling;
- Risk of solidification/gelification at low temperatures, with consequent pumping and transfer issues (derived from the typical characteristics of resin/formaldehyde-based products)
- Overfilling hazard, which leads to vapour emissions and spillage of irritating/toxic product
- Risk of post-unloading drips, which generate contamination and release of irritating vapours
Given these factors, it becomes necessary to adopt a loading system:
-
in a closed-loop system,
-
equipped with heat tracing and insulation for temperature control,
-
with pneumatic movement and remote controls to reduce operator exposure,
-
with level sensors to prevent overfilling
-
with containment devices such as a drip bucket to avoid residual drips.
Zipfluid solutions
Based on these prerequisites, we supplied:
Let’s look at them in detail.
Top Loading Arm
Considering the risks associated with Concentrated Urea Formaldehyde, the loading arm has been equipped with a pneumatic telescopic drop pipe.
The telescopic movement is automatically managed through safety control functions, in order to prevent any unintended activation: the pipe extends only after the arm has been correctly positioned in the working position. Once aligned, the operator activates the Hold Down; a sensor verifies that the position is locked and stable; only then is the telescopic tube allowed to descend and the loading process to begin.
The pneumatic actuation, combined with remote control via pendant, drastically reduces the need for manual interventions close to the product, increasing safety and simplifying the operating procedure.
The pneumatic telescopic pipe also provides a stable and controlled connection, optimising alignment with the loading nozzle.
To prevent the risk of overfilling, the system integrates a vibrating fork level switch, which signals when the maximum level is reached and allows timely flow interruption.
At the end of the loading phase, the adoption of a drip bucket makes it possible to contain any residual drips, avoiding local contamination and vapour dispersion.
Overall, this configuration guarantees safe, controlled operation compliant with the requirements necessary for handling a chemically critical fluid such as Urea Formaldehyde.
Metering Skid
The skid was designed to ensure safe operation during the transfer of urea formaldehyde, including components in AISI 316/316L, ESD valve, Coriolis flow meter, control valves, pressure instrumentation, and electric heat tracing. These elements guarantee proper fluid control and maintenance of the required operating conditions.
While essential, these components represent the standard equipment needed to ensure continuity and stability of the transfer process.
The most significant feature is the redundant RS485 Modbus communication, designed to ensure reliability, signal continuity, and control system resilience.
The dual communication line eliminates the risk of sudden interruptions caused by a single‑channel failure and guarantees constant and secure transmission of all operational data—valve statuses, flow and pressure measurements, alarms, and critical conditions.
This redundancy allows the skid to maintain full functionality even under degraded conditions, ensuring continuous monitoring by the supervisory system and preserving plant safety. In applications involving sensitive fluids like urea formaldehyde, the continuity of information flow is essential to prevent anomalies and guarantee prompt intervention.
Overall, the combination of safety valves, high‑precision measuring instruments, stainless‑steel components, and electric heat tracing makes the skid a complete, safe, and fully compliant system for handling sensitive fluids such as urea formaldehyde.
Conclusion
Once again—although the challenge was significant—thanks to our engineered solutions and a safe and efficient production cycle, we delivered the customer's loading system in perfect condition and ready for operation.
Do you also handle hazardous fluids?
