Successful application of a diesel particulate filter system at Vale’s Creighton mine

Stachulak, J. S.; Allen, C.; Hensel, V.

doi:10.15834/cimj.2015.20

Cited by 5 publications

(3 citation statements)

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“…The test engine was retrofitted with a full-flow SMF system (Mann + Hummel, M + H, SMF-AR ® ) previously tested in the underground mine (Stachulak and Hensel, 2010). The principal components of the SMF system are a filtration element, fuel additive dosing system, and electrical heater (Supplementary Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Retrofit-type diesel particulate filter (DPF) systems are extensively used to reduce exposure of underground miners to aerosols emitted by diesel-powered vehicles. The systems made with sintered metal filter (SMF) media that are regenerated with help of the iron-based fuel borne catalysts (FBCs) and on-board electrical heaters are considered as a potential solution for curtailing emissions from underground mining vehicles operated over light- and medium-duty cycles (Stachulak and Hensel, 2010). The FBCs provide direct contact between catalyst and diesel particulate matter (DPM), and ameliorate the regeneration process.…”

Section: Introductionmentioning

confidence: 99%

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Emissions from a Diesel Engine using Fe-based Fuel Additives and a Sintered Metal Filtration System

Bugarski

Hummer

Stachulak

et al. 2015

ANNHYG

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A series of laboratory tests were conducted to assess the effects of Fe-containing fuel additives on aerosols emitted by a diesel engine retrofitted with a sintered metal filter (SMF) system. Emission measurements performed upstream and downstream of the SMF system were compared, for cases when the engine was fueled with neat ultralow sulfur diesel (ULSD) and with ULSD treated with two formulations of additives containing Fe-based catalysts. The effects were assessed for four steady-state engine operating conditions and one transient cycle. The results showed that the SMF system reduced the average total number and surface area concentrations of aerosols by more than 100-fold. The total mass and elemental carbon results confirmed that the SMF system was indeed very effective in the removal of diesel aerosols. When added at the recommended concentrations (30 p.p.m. of iron), the tested additives had minor adverse impacts on the number, surface area, and mass concentrations of filter-out (FOut) aerosols. For one of the test cases, the additives may have contributed to measurable concentrations of engine-out (EOut) nucleation mode aerosols. The additives had only a minor impact on the concentration and size distribution of volatile and semi-volatile FOut aerosols. Metal analysis showed that the introduction of Fe with the additives substantially increased Fe concentration in the EOut, but the SMF system was effective in removal of Fe-containing aerosols. The FOut Fe concentrations for all three tested fuels were found to be much lower than the corresponding EOut Fe concentrations for the case of untreated ULSD fuel. The results support recommendations that these additives should not be used in diesel engines unless they are equipped with exhaust filtration systems. Since the tested SMF system was found to be very efficient in removing Fe introduced by the additives, the use of these additives should not result in a measurable increase in emissions of de novo generated Fe-containing aerosols. The findings from this study should promote a better understanding of the benefits and challenges of using sintered metal systems and fuel additives to control the exposure of underground miners and other workers to diesel aerosols and gases.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Emissions from a Diesel Engine using Fe-based Fuel Additives and a Sintered Metal Filtration System

Bugarski

Hummer

Stachulak

et al. 2015

ANNHYG

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“…With the depletion of shallow resources, civil engineering projects such as mining engineering, hydroelectric engineering, and traffic tunnel engineering were constructed in the deeper subsurface of the earth. Currently, extensive mines and tunnels are being developed at depths of greater than 2000 m, including the Creighton nickel mine depth of 2400 m in Canada (Stachulak and Hensel, 2010), the depth of the drainage tunnel of the Jinping II hydropower station in China that reached 2525 m (Gong et al, 2012), and the Anglo-gold mine in South Africa development of 3700 m (Peprah, 2002). Rockburst disaster is one of the most harmful problems encountered in deep underground excavations (Li et al, 2012;Mazaira and Konicek, 2015;Wang et al, 2015aWang et al, , 2015b.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the dynamically induced rockburst of a rock wall with double free faces

Chen

et al. 2018

International Journal of Damage Mechanics

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Dynamic disturbance is regarded as one of the most significant factors that induce rockburst around the boundary of underground excavation, particularly in high confining pressure conditions. In the present study, three types of dynamic loading tests are conducted to investigate the dynamically triggered rockburst behavior of a rock wall with double free faces. The three types of dynamic loading considered are the large stress single-pulse loading (mild-disturbance), the middle stress low-frequency cyclic loading (modest-disturbance), and the small stress high-frequency cyclic loading (weak-disturbance). The experimental results are analyzed and the damage evolution process during the dynamic disturbances is described. The tests reveal that the failure strain (i.e., the strain at unstable failure) of the dynamically triggered rockburst is greater than that of the self-initiated rockburst. The intensity of rockburst depends not only on the initial static stress level but also on the dynamic disturbance type. The rockburst induced by the mild-disturbance is mainly related to large amounts of disturbance energy imported. The rockburst caused by the modest-disturbance is contributed by the disturbance degradation of ultimate energy-storage capacity of specimen. The rockburst in a weak-disturbance specimen is primarily due to the disturbance aggravation of the damage in specimen and the elastic strain energy release. In particular, the rockburst hazard from the double free faces is more likely to be triggered and its result more serious than that of the rock structure with only one free face because the increasing free face decreases the rock strength. The fragmentation of the dynamically induced rockburst is larger than that of the self-initiated rockburst. With increasing time of dynamic loading, the damage induced by the modest-disturbance and the weak-disturbance first increases continually, subsequently increases steadily, and finally increases drastically. By contrast, the damage of the specimen under the mild-disturbance condition has a linearly increasing trend.

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Mobile Equipment Power Source—Impact on Ventilation Design

Allen

Stachulak²

2018

Proceedings of the 11th International Mine Ventilation Congress

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Successful application of a diesel particulate filter system at Vale’s Creighton mine

Cited by 5 publications

References 0 publications

Emissions from a Diesel Engine using Fe-based Fuel Additives and a Sintered Metal Filtration System

Emissions from a Diesel Engine using Fe-based Fuel Additives and a Sintered Metal Filtration System

Experimental study of the dynamically induced rockburst of a rock wall with double free faces

Mobile Equipment Power Source—Impact on Ventilation Design

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