MHI OIL & GAS

Finding Agile Solutions 
for LNG Producers
Case Study 01:

Finding Agile Solutions
for LNG Producers

The Latest H-100 Gas Turbine and
State-of-art Compressor Technologies

KEY POINTS TO THE SOLUTIONS
Installing more versatile gas turbine compressor strings in new facilities increases efficiency and reliability of LNG production
Adding two-shaft gas turbine compressor strings to existing facilities boosts flexibility, efficiency and reliability of LNG production
SOLUTION

Efficient and Reliable Liquefaction Facilities Are Vital to Compete in a Crowded Market

Installing an H-100 Gas Turbine driven liquefaction compressor package, from Mitsubishi Hitachi Power Systems (MHPS), would transform the plant’s operations.

The two-shaft, heavy-duty gas turbine produces approximately 10% more power than the original gas turbine/ helper motor package, while eliminating the complexity, added footprint and trip hazards associated with the helper motor drive systems. The H100 's higher efficiency and reliability will provide significant benefit for the producer while substantially reducing fuel costs.

As the H-100 is fitted with an onboard starter motor, it doesn’t need the substantial starter-helper motor associated with single-shaft gas turbines. This would resolve a major production obstacle that has hindered the plant for many years.

Removing the need for a separate starter lowers generating costs, demands less space, and means there is no need to hold spare-parts inventory.

With two-shaft industrial gas turbines in place, the producer would have “the best of both worlds”: gas turbine efficiency and flexibility on par with the largest aero-derivative engines; and the power density, high reliability, and low maintenance outlay typically associated with large industrial gas turbine engines.

Easy Installation Makes Replacing Old Infrastructure Simple, Keeping Downtime to a Minimum

New H-100 turbines can be up and running more quickly than traditional solutions. Their two-shaft construction is a flange-for-flange replacement for older turbines like those applied at plants in Asia, making it a perfect replacement for aging single-shaft turbines. The new equipment can be pre-staged prior to shut down to minimize installation time.

It is also an attractive option when installed as additional capacity to existing plants, as production can be ramped up or down more quickly than with older gas turbines and modern aero-derivative turbines.

Twin-shaft Turbines Allow Greater Flexibility, Which Will Be Key in the Competitive Lng Market of the next Few Years

The H-100 turbine and compressor package can run at a range of operating speeds, giving the plant flexibility to more easily respond to variations in demand and process conditions.

With a period of uncertain demand due in the coming few years, two-shaft technology gives producers a wider operating speed range than one-shaft machines. The H-100 allows operators to slow down production at times of low demand, whereas single-shaft machines are effectively either on or off, making them much less flexible.

Reliability Is the Key to Effectively Handling Stoppages and Upgrades

The ability to ramp up operations or calm things down quickly in response to changes in demand is important. But reliability is equally important, especially for owners and operators of older LNG production facilities seeking to upgrade existing facilities.

The H-100’s wide range of operating speeds means it can reliably handle production upsets, as production can be backed off rather than fully shut down to accommodate process variations. It is also less likely to trip or get bogged down than single-shaft gas turbines.