Process Dynamic Simulation • Advanced Process Control • Plant‑Wide Optimization
Founder & Principal Consultant: Dr. Zhong‑Xiang Zhu London, Ontario, Canada • zxzhu600@msn.com • 6106537091 • www.idynsimconsulting.com
Company Overview
iDynSim Consulting provides specialized engineering expertise in dynamic process simulation, advanced process control (APC/MPC), and plant‑wide optimization for chemical, refining, LNG, hydrogen, and ammonia facilities. Founded by Dr. John (Zhong‑Xiang) Zhu—an internationally recognized expert with 30+ years of industrial experience—the firm delivers high‑fidelity models, robust control strategies, and optimization frameworks that solve complex engineering challenges beyond the capabilities of standard commercial tools or internal engineering teams.
Core Competencies
Dynamic Process Simulation
High‑fidelity dynamic models for chemical, refining, oil and gas, LNG, green and blue hydrogen, and ammonia systems, using commercial platforms such as UniSim, Hysys, gPROMS, etc., or MATLAB, Python etc.
Green energy electrolyzer (AWE) modeling integrated with load balance and full operational sequence logic
Custom unit‑operation models for specialized or non‑standard equipment
Multiphase compression modeling with rigorous thermodynamics
Model troubleshooting: numerical stability, stiffness, convergence, and dynamic fidelity
Controllability and operability studies
Advanced Process Control (APC/MPC)
Multivariable control design for highly coupled systems
APC/MPC development using dynamic simulation
Control strategies for plants operating under variable renewable‑power conditions
Integration of APC/MPC with dynamic simulation and digital‑twin platforms
Plant‑Wide Optimization & Digital Twins
Distributed simulation platforms across multiple CPUs
Dynamic optimization for maximizing production under fluctuating inputs
Digital twins for operator training, troubleshooting, and control‑system validation
Economic optimization delivering measurable financial benefits
Expert Advisory & Technical Leadership
Independent review of simulation models, control logic, and plant‑wide architectures
Root‑cause analysis for dynamic instability, oscillations, and shutdown risks
Mentoring engineering teams in simulation, control, and optimization best practices
Strategic guidance for hydrogen, ammonia, and net‑zero project development
Differentiators
Global Expertise: 30+ years advancing simulation and control technology at Honeywell and Air Products.
Proven Impact: Optimization strategies delivering substantial economic value.
Patented Innovation: Inventor of multiple patented control strategies for green‑hydrogen systems.
Technology Leadership: Core developer of Honeywell UniSim Dynamics, including foundational holdup, rigirous multiphase compressor, and many key unit operation models.
Clean‑Energy Pioneering: Lead modeler and control architect for the historic NEOM green‑hydrogen project and Canada’s net‑zero hydrogen complex.
High‑Complexity Problem Solving: Specialized in challenges that standard simulators and internal teams cannot resolve.
Representative Experience
NEOM Green Hydrogen Project (Air Products): Developed first‑of‑its‑kind dynamic electrolyzer models; architected plant‑wide simulation and control platform; invented patented control strategies enabling stable 0–100% operation under renewable‑power fluctuations.
Net‑Zero Hydrogen Complex (Edmonton): Built the plant‑wide dynamic model and developed patented turbine fuel‑transition controls.
Honeywell UniSim Dynamics: Core developer for foundational holdup models, multiphase compressor technology, and major unit‑operation models used globally.
Dynspen (China): Primary developer of China’s first dynamic simulation system; awarded the National Science and Technology Progress Award.
Ideal Engagements
Dynamic modeling for new or existing plants
APC/MPC design, troubleshooting, and enhancement
Digital‑twin development for hydrogen, ammonia, LNG, or refining
Electrolyzer modeling and renewable‑power integration
Model validation and control‑system review
Optimization studies for production, energy, and stability
Technical advisory for clean‑energy and net‑zero projects