Why Switch to HDCNG®?

Gas Supply

MES can arrange reliable supply of feedstock gas suitable for processing into HDCNG®. This could be sourced from drainage gas or gas reserves in the miners own lease area, existing domestic pipeline supplies or proven but undeveloped reserves.

Alternatively, miners can supply their own gas from existing mine site infrastructure.

Diesel will continue to be sourced through traditional/existing supply arrangements.

High Density Compressed Natural Gas pipeline

Processing

Using patented High Density Compressed Natural Gas cylinder filling technology, processed gas will be compressed and filled into custom designed HDCNG® Fuel Packs containing fibre composite cylinders.

With all statutory approvals in place for use in the mining industry, the process delivers safe and effective cylinder filling resulting in a consistent fill every time. A level never before achieved allowing enough fuel to be carried on board for a full shift.

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High Density Compressed Natural Gas processing facility

Transport

MES designed and purpose built road transport crates can be used to transport the HDCNG® ready for use to mining operations. This could be either where the feedstock gas is not available from within the lease area or where the gas processing site and the refuelling facility on the mine lease are some distance apart.

Pipeline options to transport low and high pressure feedstock gas to the processing train are also available where this is a more cost effective option.

Semi-trailer containing HDCNG dual fuel packs

Refuelling

MES offer a range of refuelling options including:

  • A fully autonomous "Swap and Go" refuelling station enabling completion of mine truck refuelling of both HDCNG® and diesel in less than 5 minutes.
  • Direct fast fill connection for both HDCNG® and diesel which will refuel mine trucks in a time frame similar to conventional diesel refuelling.

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Retrofit

The non-invasive mine truck dual fuel conversion and tailored fuel pack configurations are supplied by MES and fitted by MES technicians.

A comprehensive development program is underway with the knowledge of the relative mine truck and engine OEMs.

This development program integrates MES' Electronic Fuel Control System with the OEM Engine Management Systems (EMS) ensuring optimum fuel control and performance.

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High Density Compressed Natural Gas HDCNG converted engine

The supply of mine site fuel is one of most significant cost inputs to any mining operation. HDCNG® diesel dual fuel conversion has the potential to reduce fuel costs by in excess of 25%. In some coal mining operations this can result in >AU$1 per tonne structural cost reduction.*

*Savings are directly reflective of supply costs of the gas feedstock (transmission line or mine drainage gas i.e. coal bed methane), size of fleet, extent of MES capital deployed. 25% is average for a large fleet (50+) large mine trucks with onsite gas feedstock availability.

Mine truck dual fuel conversion accounting spreadsheet, pen and calculator

No capital is required by the mining company to adopt the HDCNG® dual fuel system. The strength of the Sime Darby, Intelligas partnership allows for a fully funded capital model.

All capital required for gas transmission line connections or sub-surface gas gathering, processing, transport, handling and refuelling as well as on-truck and engine dual fuel infrastructure can be provided by MES.

Handshake for capital free mine truck diesel gas duel fuel conversion

Health

HDCNG® dual fuel delivers a reduction in the level of harmful diesel particulates commensurate with the achieved substitution rate i.e. 80% substitution directly correlates to 80% reduction in diesel particulates emitted.

Young family at home representing health benefits from diesel dual fuel conversion

Safety

  • Smoother running of the engine as a result of the combustion characteristics of natural gas reduces in-cabin vibration and aids in driver fatigue management.
  • No driver involvement in refuelling (no need to leave the truck cabin). When autonomous refuelling systems are used, drivers are not permitted to leave cabin during refuelling.
  • Very low fire risk. Independent risk assessments indicate the fire risk of HDCNG® on board a mine truck is secondary to diesel, hydraulic oil, and tyre fires. If the fuel packs are exposed to a fire, the gas will heat and will be released via pressure relief devices. As HDCNG® is maintained in a gaseous state and is lighter than air, any escape will rise and not go to ground. The auto ignition temperature of 580 deg C and flammable range of 5-15 % by volume of air compares to diesel at 210 deg C and a flammable range of 0.6-7.5%.

Based on a conservative substitution rate of 80% of diesel with HDCNG®, the following greenhouse gas (GHG) benefits are delivered with conversion to dual fuel:

  • CO2 emissions from a typical 200 tonne payload mine truck operating 5,500 hours annually will reduce by approx. 432 tonnes per year i.e. 10,800 tonnes across a 25 truck fleet.
  • An overall reduction in GHG of 13%
  • MES' unique dual fuel engine technology achieves methane slip levels at less than 1%
  • A reduction of more than 80% in diesel particulates contributes to improved air quality across the site
  • 20% reduction in oxides of nitrogen
Blue sky and clouds representing environmental benefits from HDCNG mine truck dual fuel conversion

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