LNG Liquefaction and Regasification

lng ship and terminal

Specialized LNG Experience

When it comes to regasification terminals, we are able to perform an equipment layout and rough cost estimate as part of a conceptual design package. A conceptual process design would include key features such as BOG (boil-off gas) suppression, reloading capability (if required), firewater minimization, electrical usage minimization, and tank sizing, in addition to any other process features required by the client.

Liquefaction installations are unique facilities and PROCESS is able to perform commissioning support, troubleshooting, and debottlenecking, as well as many design and operations support tasks.

For LNG receiving terminals PROCESS is able to provide items such as: major equipment lists, layout and cost estimates with semi-detailed unit costs and assembly level line items.

PROCESS is familiar with the following additional aspects of industrial process projects:

Cost estimates
Design standards
Hazards identification (HAZOP)
Process safety program support (PSM and RMP)
Electrical/civil/mechanical/process/piping interfacing
Vendor interface
Cause & effects
Alarm Rationalization
SIS/SIL (for High Integrity Pressure Protection Systems)
lng facility


What We Offer

In addition to specialty areas of expertise, all of our standard services and deliverables apply equally as well to LNG facilities of all types. These include:

  • Conceptual process design development
  • Capital Project Development Support (FEL-1, 2, 3)
  • Front End Engineering Design packages (FEED) and FEED verification
  • Preliminary and final process design packages (basic engineering / schedule A / etc.)
  • Technical and economic process alternatives evaluations and feasibility studies
  • Design calculations and technical reporting
  • Process simulations and modeling
  • Mass and energy balances
  • Unit operation design/evaluation
  • Debottlenecking studies
  • Piping system hydraulics calculations
  • Process control scheme development
  • Control system startup, tuning, optimization
  • Creating Process Flow Diagrams (PFDs), Piping and Instrumentation Diagrams (P&IDs), and Process Control Diagrams (PCDs)
  • Process/equipment bid package preparation
  • Equipment specifications, and vendor technical / cost proposal evaluation and recommendations
  • Detail design and construction phase process oversight and support
  • Commissioning and startup support
  • Process evaluation, troubleshooting and optimization
  • Conducting Process Hazard Analyses (PHAs) and developing risk management plans
  • Independent 3rd party design review
  • On-site process modification/construction oversight
  • Commissioning and startup
  • Troubleshooting and optimization
  • Development of operating procedures
  • Development of process documentation


LNG Systems Experience

LNG facilities utilize a number of challenging compression and refrigeration systems. Dynamic simulation (dynamic compression evaluation programs) help ensure systems are protected and adequately designed for frequent start up and shut down under a variety of load conditions. Here are some examples of common LNG subsystems:

Process Systems

  • Wellheads
  • Pipelines
  • Slugcatchers
  • Condensate separation
  • Benzene removal
  • CO2 Absorption
  • Driers
  • Mercury absorption
  • Pre-cooling
  • Heavy hydrocarbon columns
  • Liquefaction
  • Sub-cooling
  • N2 removal
  • CO2 liquefaction/re-injection
  • LNG storage/loading
  • LPG fractionation/storage
  • Refrigerant makeup

    Utility Systems
  • Mono-ethylene Glycol (MEG)
  • Gas turbines and electrical (plus emergency power)
  • Flares and blowdown
  • Compressed air
  • Steam
  • Tempered water
  • Cooling water
  • Hot oil
  • Nitrogen production
  • Liquid Nitrogen storage





Taking Advantage of LNG Opportunities

With today's demand for clean burning, easily transportable fuels, LNG is rapidly becoming a fuel of choice for many applications. In this environment, plant operators and their engineering/construction partners must be able to design robust facilities accurately and efficiently. PROCESS has over 50 process engineers ready to assist by providing process chemical engineering expertise throughout the course of your next project.

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