Intertek Caleb Brett test – XBEE HFO stability

Intertek Caleb Brett conducted a study for GTR, Inc; testing was conducted to verify that the standard XBEE dose rate used to improve combustion (4,000:1) will be equally effective in improving quality in aged and unstable HFO.

Test and analysis report described below.

Intertek Caleb Brett is a worldwide leading laboratory.

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Fuel test - Intertek Caleb Brett and HFO XBEE stability

In February 2019, GTR, Inc., the manufacturer of XBEE Enzyme Fuel Technology (marketed in the Americas as “The Original Soltron® Enzyme Fuel Treatment”) hired Intertek Caleb Brett, Signal Hill, California, to study the additive’s effects on improving stability in unstable HFO. Five individual 1-Liter and 750-ml laboratory retain from five different bunkering operations were acquired from a California fuel jobber to simulate a realistic shipboard fuel scenario of blended fuels with different ages. Fuel certifications (ISO 8217-2017) had been performed between February 2018 and August 2018. The HFO came from a sole source. The refinery and crude oil sources are not known.

The five samples were blended, totaling approximately a gallon (3.78 liters). An additional 6 ounces (180 ml) of an aged IFO 380 sample from a different vendor was added. The total volume was approximately 1.05 gallons or ~4 liters. The fuel samples were mixed and delivered to Intertek.

The Laboratory split the fuel into two equal portions and added one sample at 0.5 ml (~4,000:1). The fuel was set aside for one week.

The primary goal of this test was to create a blend of HFO that was unstable due to comingling of different batches of different aged fuels, to determine what characteristics XBEE is likely to improve, at the most economical dose rate.

 

FUEL TEST RESULTS

The primary goal of this fuel test was to create a blend of HFO that was unstable due to comingling of different batches of different aged fuels, to determine what characteristics XBEE is likely to improve, at the most economical dose rate.

The most remarkable response was the ASTM D 4740 Compatibility rating going from a “5” to a “3”. This indicates the blended fuel went from being unsafe to use to be safe to use, but with warnings to not overheat the fuel. Ratings can be subjective, as there are no fractional ratings. The “5” for the neat fuel is obvious. The treated fuel falls in between “2” and “3”. As it does lean closer to “3” (not easily visible in the photograph), the rating must go to the higher number (see images, chart, and description next page).

The other notable change was ASTM D 445, which is viscosity. The neat fuel was 374.3 CST and the treated fuel was 357.7 CST. This represents a 4.5% reduction in viscosity, with no reduction in fuel density.

Other results of interest include:

  • ASTM D 664: 12% reduction in acidity
  • ASTM D 6560: 3% reduction in asphaltenes
  • ASTM D 482: 45% reduction in ash

These fuel characteristics are known to contribute to fuel instability, sludge formation, corrosion, and injector fouling, or even injector damage. While these are small improvements, collectively they are all contributing factors towards the total improvement of this fuel blend.

Fuel test - Intertek Caleb Brett and HFO XBEE
Neat fuel · Rating ‘5’
Fuel test - Intertek Caleb Brett and HFO XBEE
XBEE treated fuel · Rating ‘3’
Fuel test - Intertek Caleb Brett and HFO XBEE

FUEL TEST CONCLUSIONS

“In this study, even at 4,000:1, the lowest dose rate recommended for enhancing combustion, XBEE greatly improved the compatibility and stability in an unstable HFO blend.

For shipboard applications, XBEE can significantly reduce sludge formation due to commingling and aged fuel, and improve fuel system function and engine cleanliness, without having to use the higher factory recommended “recovery” dose rate of 2,000:1.

Following are photographs of the ASTM D 4740 compatibility spot tests, as well as the full Intertek Caleb Brett Report of Analysis.” Matt Cohen – Clean Fuel Resources Consultant to GTR, Inc.

 

INTERTEK CALEB BRETT

Los Angeles, CA, USA

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XBEE ENZYME FUEL TECHNOLOGY

XBEE is an enzyme technology compatible with all fuels, in all engines. This cleaning treatment disperses water, sludge and bacterial growth in the fuel.

Consequently, XBEE helps to cleanse up the whole fuel system and eliminate carbon deposits in the engines, hence a reduction of the maintenance costs and gas emissions _ in particular CO2, NOx and particulates.

Finally XBEE reduces the fuel consumption.