Plant Engineering Design - Jimmy Lea P/L

The methodology employed in most of our engineering study projects study includes using first principle calculations and process simulation software called ASPEN HYSYS. HYSYS is an abbreviation for Hyprotech Systems, is a process-modelling software, capable of steady-state and dynamic simulations.

It was developed by AspenTech and usually used by chemical process engineers to mathematically model chemical processes, from unit operations to full chemical plants and refineries. HYSYS is able to perform many of the core calculations of chemical engineering, including those concerned with mass balance, energy balance, vapour-liquid equilibrium, heat transfer, mass transfer, chemical kinetics, fractionation and pressure drop. The diagram on the right shows a process, units operations and stream numbers.

The table shows the properties of each stream. 

Plant Engineering Design - Jimmy Lea P/L
Plant Engineering Design - Jimmy Lea P/L


Engineering & Simulation Consultants

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​CHEMICAL PROCESS ENGINEERING CONSULTANTS

Our chemical process engineering consultants provide conceptual design, front-end engineering design and detailed design within the chemicals, renewable fuels, petrochemicals, oil & gas, mining & mineral processing. Below are the typical process flow diagram (PFD) and piping & instrumentation diagram (P&ID) that our process engineers had delivered.​

Plant Engineering Design - Jimmy Lea P/L

In the design of a chemical plant, our process engineers will execute the following tasks:

- Process design basis
- Process conceptual design
- Mass & energy balance
- Single and multiphase process calculations
- Control philosophy and functional specification

- Process design and review

- Selection and sizing of:


​  valves


- Preparing list for:



- Hydraulics study report
- Utilities summary list

- Preparing datasheets for instrument such as:

  flow indicator and transmitters

  level indicator and transmitters

  pressure indicator and transmitters

  temperature indicator and transmitters

  pH indicator and transmitters

  conductivity indicator and transmitters

- Selection and/or design of process equipment
- Sizing of process equipment

- Preparing datasheets for equipment such as:
  mixing tanks and static mixers
  CSTR and plug flow reactors
  control valves
  various pumps
  heat exchangers

- Preparing specification for vendor package
- HAZOP study and HAZOP closeout report

- Developing SOPs for:


  normal operations



- Commissioning procedure

In addition, our process engineers also perform sensitivity analysis on crucial variables to determine which are the most important variables that result in the most significant changes.

Our chemical process engineers will develop accurate mathematical models that can be used to predict process changes as a consequence of changing the value of certain variables. Using Microsoft Excel, these mathematical models are then transformed into a form that is user-friendly for the client.