Full plant-scale process model
Reactors, distillation, and heat integration modeled together, not as isolated loops.
STYROSIM is a real-time styrene monomer plant DCS simulator that models the manufacture of styrene monomer from ethylbenzene, feed to finished product. Built by PiControl Solutions, STYROSIM is process control simulation software that pairs a full plant-scale dynamic process model with a DCS-style control-room interface, so operators, control engineers, and students interact with the simulated plant the same way they would interact with a real styrene unit.
Unlike a single-loop trainer, STYROSIM reproduces how an entire process fits together: reactors, distillation and separation, and heat integration, all interacting the way they do on a live unit. That plant-wide view is what lets STYROSIM support operator certification, abnormal-situation training, and APC strategy testing before any change touches the real petrochemical plant.
STYROSIM simulates the real-time dynamics of a full styrene monomer plant, ethylbenzene feed, reaction, distillation, and heat integration, so operators and engineers can practice startup, shutdown, upset response, and control-strategy changes under realistic plant conditions. STYROSIM runs on standard Windows hardware, requires no DCS hardware, and drives a control-room interface modeled on a PCS 7-style DCS. Because it reproduces the same plant-wide interactions engineers later manage in advanced process control work, the skills built on STYROSIM transfer directly to the live unit.
Reactors, distillation, and heat integration modeled together, not as isolated loops.
Live P&ID graphics, trends, and faceplates that mirror a real styrene monomer control room.
Run abnormal-situation scenarios on the simulated plant without production risk.
Realistic alarm and event lists so operators build acknowledge-and-respond habits.
Design and validate control strategies against realistic plant-wide dynamics.
Runs on standard Windows hardware, no DCS hardware or proprietary equipment required.
Petrochemical plants use STYROSIM to train new operators and control engineers on a realistic styrene monomer unit before they are assigned to the live control room, and to requalify experienced operators after DCS upgrades or process changes. Because the simulator behaves like a full plant, engineers also use it to test APC and multivariable control strategies before deploying them to petrochemicals production.
Engineering colleges and universities use STYROSIM to show students how individual unit operations and chemical engineering calculations they learn in isolation, reactors, distillation, heat exchangers, thermodynamics, mass and heat transfer, come together in a real plant-scale process. Students who never get hands-on access to a working plant can change setpoints, disturb process conditions, and see the consequences ripple through a realistic control room, before they ever enter a real one.
For single-loop PID tuning practice rather than a full plant model, see SIMCET.
STYROSIM models the industrial production of styrene monomer from ethylbenzene, the same feedstock-to-product pathway run in a real petrochemical unit. The simulator carries the process through catalytic dehydrogenation reaction, product recovery and distillation, and the heat-integration loops that tie the unit together, so the dynamics operators see on-screen match what they would see on a live plant DCS.
That plant-wide fidelity is what separates STYROSIM from a single-unit-operation exercise. A student or new engineer working with STYROSIM sees how a reactor upset propagates into a downstream column, how feed composition swings affect product purity, and how a control-strategy change ripples across interacting loops, the exact systems-level understanding that a textbook problem or an isolated simulator cannot provide.
Ethylbenzene-to-styrene-monomer production, reaction, distillation, and heat integration, in one plant-scale simulator.
STYROSIM's feature set is built for one outcome: operators and engineers who understand the whole plant, not just one loop.
Simulates ethylbenzene-to-styrene-monomer production end to end, not one isolated unit operation.
Shows how reactors, columns, and heat integration interact, the systems-level view a real plant demands.
Live P&ID graphics, trends, and faceplates modeled on a real DCS control room.
Removes the interface learning curve, so trainees focus on plant behavior, not navigation.
Realistic alarm lists, acknowledgements, and event history matching plant alarm-management practice.
Builds the acknowledge-diagnose-respond habits operators need during a real alarm flood.
Reactor conversion, distillation composition, and heat-integration response modeled together.
Lets engineers see how a change in one part of the plant affects product purity and yield elsewhere.
A sandbox for designing and validating advanced control strategies before live deployment.
Catches interaction problems and unintended consequences before they reach the real DCS.
Runs on standard Windows hardware, no DCS hardware or proprietary equipment required.
Puts a plant-scale simulator on any classroom or training-room PC.
During four years at a college, chemical engineering students get exposed to individual unit operations, distillation, reactors, heat exchangers, and the calculations behind them: thermodynamics, mass transfer, heat transfer, kinetics. What they rarely get is the experience of seeing how all of those pieces fit together, because they have no access to a real plant. Even when they do, on a special project or diploma work, they cannot change setpoints, cannot alter process conditions, and cannot really learn how a plant behaves as a system. Many freshly graduated engineers are afraid to enter a control room for the first time, lost in a sea of consoles, alarms, and operating procedures they have never actually practiced against.
A reactor problem set and a distillation problem set are solved separately, with clean boundary conditions. Neither shows how a reactor upset propagates downstream into a column, or how a heat-integration loop couples the two together in a real plant.
Even students who get a plant tour or a diploma project on a real unit cannot change setpoints or disturb process conditions. Watching a plant run is not the same as operating one, and it leaves the actual control-room skills untested.
Learning the control room for the first time on a production styrene monomer unit means learning under supervision on equipment where mistakes have off-spec product, energy waste, and safety consequences. Plants would rather that learning curve happen somewhere else.
STYROSIM removes the structural gap: a full plant-scale process model, a realistic DCS control room, and no production unit at risk while operators and students build the systems-level intuition a real styrene monomer plant demands.
STYROSIM is one plant-scale model in PiControl's process simulation lineup, built to pair with single-loop and unit-operation simulators for a complete training path.
Before working the full styrene unit in STYROSIM, engineers build PID tuning fundamentals in SIMCET, PiControl's real-time PID tuning simulator with a testing-and-grading module used for certification.
STYROSIM's separation train shares the same distillation fundamentals modeled standalone in PiDistill, PiControl's continuous distillation column simulator, useful when a program needs to isolate column behavior on its own.
Once operators and engineers are trained on STYROSIM, PITOPS takes over for closed-loop PID tuning and system identification on the real production DCS or PLC.
STYROSIM models a styrene monomer unit specifically, but the control room, alarm-response, and APC-validation skills it builds carry directly into the refining, petrochemical, and specialty-chemical plants PiControl serves.
STYROSIM is deployed in petrochemical plants and engineering colleges worldwide as PiControl's full-scale styrene monomer plant simulator, used by corporate training departments for operator certification and by university process control programs to teach plant-wide control. Read more in our customer success stories.
Request the STYROSIM installer and licensing details for your plant or department.
See STYROSIM run in real time, from ethylbenzene feed to styrene monomer product, on a live DCS-style control room. A PiControl engineer will walk through the plant model relevant to your training program and map out a licensing path for your team.