Processtryck

Processtryck, or process pressure, is the pressure maintained within a process system, vessel, or stream where a chemical or physical transformation occurs. It may be the gauge pressure relative to ambient or the absolute pressure relative to a perfect vacuum. Process pressure is a fundamental parameter in process engineering, influencing reaction rates, phase behavior, equipment sizing, and safety.

Measurement is typically performed with pressure sensors or transmitters connected to process taps. Readings may be gauge, absolute, or differential pressure depending on the application. Common units include pascals (Pa), bar, and pounds per square inch (psi). Modern instrumentation often uses bourdon tubes, diaphragms, or solid-state sensors, sometimes with digital communication to control systems.

Control and safety frameworks rely on processtryck to regulate flows, temperatures, and reaction conditions. Process pressure is managed by pumps or compressors, pressure-reducing or boosting valves, and sometimes by bleed or vent systems. Protective measures include pressure relief valves, rupture disks, and proper design codes to prevent overpressure.

Applications span chemical reactors, distillation columns, pipelines, boilers, and pharmaceutical manufacturing. Typical pressures can range from near vacuum up to several tens of megapascals, depending on the process. In flow measurement, differential pressure is used to infer flow across orifices, valves, or filters, linking processtryck to process performance.

Terminology notes: the term is commonly used in Swedish-speaking contexts, but the concept is universal in process engineering. Understanding processtryck is essential for equipment selection, materials compatibility, safety analysis, and process control.