The Core Technology
Predictive-Horizon Control: Looking Down the Road, Not Just Over the Hood.
Conventional boiler control reacts to instantaneous header pressure, which means it is always responding to something that has already happened. MultiMaxx predicts where pressure will be several minutes into the future, and adjusts boiler loads now to maintain a predicted setpoint. The analogy is exact: the difference between driving by looking just over the hood versus looking down the road.
01
Predictive Header Pressure Control
MultiMaxx adjusts boiler loads to maintain a predicted header pressure several minutes into the future - preventing over-response to process upsets caused by boiler response lags. This eliminates the thermal stress, fuel waste, and pressure excursions that characterize conventional reactive control strategies. The bigger the header volume, the better MultiMaxx performs.
02
Intelligent Multi-Fuel Switching
Consider a facility using bark (free but slow. 10-minute response) and fossil fuel (expensive but fast. 2-minute response). MultiMaxx manages this trade-off continuously: deploying fossil fuel precisely while waiting for bark steam to respond, then returning fossil fuel to minimum as bark production comes online. The economy-versus-performance balance is set by the facility owner, not the operator on duty.
03
Empirical Boiler Characterization
MultiMaxx determines each boiler's dead-time and first-order response characteristics through on-line bump tests and uses those characteristics to predict future steam production from past fuel master changes. It simultaneously uses header volume as a steam flow balance indicator, eliminating the need for multiple steam flow measurements required by conventional feed-forward approaches.
04
Comprehensive Constraint Management
Every constraint is monitored continuously - minimum and maximum steaming limits, furnace draft, drum level stability, fuel pressure and flow, damper positions, O2 percentage, opacity, and particulate emissions. As any constraint is approached, fuel master adjustments are proportionally reduced to prevent violations. When one boiler is constrained, remaining boilers automatically absorb more load - unlocking steam capacity that facilities had assumed was unavailable.
05
Graceful Fallback Architecture
MultiMaxx is deployed as modular algorithms residing directly in the regulatory control platform - as an integral part of each boiler's combustion controls. This provides extreme reliability. In the event of a supervisory system failure, individual boilers gracefully fall back to independent control without disruption to operations.
06
Plain-English Operator Messaging
MultiMaxx supports a unique messaging system that informs operators in plain English exactly what constraints are active and why the system cannot improve further. A typical message: "Boiler 5 cannot increase hog steaming because the ID Fan is maximized." Special daily reports consolidate constraint frequency data - prioritizing equipment improvements by their dollar impact on achievable savings.
07
Eliminating the Comfort Zone
Most power houses artificially limit boilers to a maximum steaming rate set well below the real physical limit. By observing every actual constraint continuously - furnace draft, superheater velocity, feedwater flow - MultiMaxx pushes boilers to their real limits instead of artificial ones. Eliminating this "comfort zone" translates directly into substantial savings that existed all along, invisible because no previous system could safely approach the real boundaries.
