Chemical Processing

Chemical processing uses controlled heat to start and hold reactions, separate and recover products and solvents, dry intermediates and finished material, and run the heat transfer and utility systems behind them. Much of it runs in batch or campaign mode, so fired equipment has to follow recipe-driven setpoint changes rather than hold one steady load.

Chemical processing facilities use burner management on the fired equipment behind each process step: process and hot oil heaters for reaction heating, reboilers for distillation and solvent recovery, dryers for thermal treatment, boilers for utilities, and thermal oxidizers, combustors, and flares for vapor control. Each needs controlled ignition, flame supervision, permissive checks, and safe shutdown.

Batch production releases solvent vapor unevenly: heavy during charging, heating, stripping, and drying, and light between batches. Because the vapor carries its own fuel value, the oxidizer burner has to turn down as concentration rises and pick back up as it falls, holding chamber temperature through both. Burner management supervises the flame through those swings and can act on a high-LEL input where vapor concentration is monitored.

Solvent recovery and distillation depend on holding a still or column at the temperature that separates the solvent cleanly. Too little heat leaves solvent in the product or residue, and too much can carry impurities over or degrade heat-sensitive material. In many plants the reboiler is heated by a hot oil loop rather than fired directly, which moves the burner management job to the hot oil heater serving it.

Each recipe can call for a different temperature profile, ramp rate, or hold point, and a campaign change can shift a heater’s load for weeks. Combustion control lets fired equipment track those setpoints closely, with fuel/air ratio held across the firing range, so a reaction or drying step stays in its window without an operator riding the firing rate by hand.

Profire supports chemical processing fired equipment such as reboilers and distillation support heaters, hot oil and heat medium heaters, process and direct-fired heaters, regeneration and catalyst heaters, dryers, industrial boilers, thermal oxidizers, combustors, flares, and vapor destruction units. Scope usually depends on how often the equipment cycles, the vapor or fuel streams it handles, and whether it reports to a DCS or a local panel.

Facilities should consider burner configuration, how often the equipment starts and stops, recipe-driven setpoint ranges, solvent vapor or LEL inputs, existing OEM panels and field devices, plant communications, hazardous-area requirements, and operator training. Equipment that cycles with every batch puts more weight on fast, repeatable restarts and clear trip history than equipment that runs for months between shutdowns. You can also compare controller options.