Catalytic effect of diesel PM derived ash on PM oxidation activity

Gao, Jianbing; Wang, Yufeng; Li, Xiaopan; Wang, Shanshan; Ma, Chaochen; Wang, Xiaochen

doi:10.1016/j.chemosphere.2022.134445

Cited by 32 publications

(4 citation statements)

References 44 publications

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“…Compared with lubricating oil-derived ash, the catalytic effect of diesel derived ash on soot oxidation has not been experimentally verified until recently (Gao et al 2022 ). Figure 6 shows TGA curves for PM and ash containing PM at different heating rates.…”

Section: Composition Of Particulate Matter and Its Effect On Regenera...mentioning

confidence: 99%

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Zhang

Dong

Lan

et al. 2023

Environ Sci Pollut Res

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Diesel particulate filter (DPF) is considered as an effective method to control particulate matter (PM) emissions from diesel engines, which is included in the mandatory installation list by more and more national/regional laws and regulations, such as CHINA VI, Euro VI, and EPA Tier3. Due to the limited capacity of DPF to contain PM, the manufacturer introduced a method of treating deposited PM by oxidation, which is called regeneration. This paper comprehensively summarizes the most advanced regeneration technology, including filter structure, new catalyst formula, accurate soot prediction, safe and reliable regeneration strategy, uncontrolled regeneration and its control methods. In addition, due to the change of working conditions in the regeneration process, the additional emissions during regeneration are discussed in this paper. The DPF is not only the aftertreatment device but also can be combined with diesel oxidation catalyst (DOC), selective catalytic reduction (SCR) and exhaust recirculation (EGR). In addition, the impact of DPF modification on the original system of some old models has been reasonably discussed in order to achieve emission targets.

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Section: Composition Of Particulate Matter and Its Effect On Regenera...mentioning

confidence: 99%

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Zhang

Dong

Lan

et al. 2023

Environ Sci Pollut Res

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“…11 For the optimization of filter regeneration events, soot reactivity towards oxidation must be accurately characterized because it determines the oxidation rates at given reaction conditions. Soot reactivity depends on its morphological and nanostructural characteristics, such as primary particle and aggregate size, 12,13 crystallite arrangement, 14,15 and carbon amorphous degree. 16 Generally, primary particles with smaller diameters induce a larger specific surface area and provide more surface availability for oxidizers, which promotes soot reactivity towards oxidation.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the nanostructure and reactivity of soot particulates from diesel/methanol dual-fuel combustion with and without EGR

Chen,

Ji,

Wang

et al. 2024

Sustainable Energy Fuels

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“…Combustion optimization, water addition, and exhaust gas recirculation (EGR) have been adopted as treatment technologies for combustion [13][14][15][16][17][18]. Three technologies are widely used in post-combustion treatment, specifically, selective catalytic reduction (SCR), which can effectively reduce NO x emissions; diesel particulate filters (DPF), which are used to remove PM emissions; and scrubbers, which reduce SO x emissions [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Compact Design in Marine Urea-SCR Systems for Small Ship Applications

Choi,

et al. 2023

Energies

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With increasingly stringent emissions legislation, such as that stipulated by the International Maritime Organization, for nitrogen oxide emission reduction in marine diesel engines, the imperative of curtailing nitrogen oxide emissions from marine diesel engines is intensifying. Consequently, the significance of aftertreatment technologies, including diesel particulate filters (DPFs) and selective catalytic reduction (SCR), is poised to grow substantially. In particular, a redesign is required to reduce the size of DPF and SCR systems for application in small ships. In this study, we varied the shape of the filters in DPF and SCR systems, aiming to achieve a distinct flow pattern and enable overall miniaturization. The performance metrics, including the nitric oxide (NO) reduction rate, NH3 slip rate, and pressure drop, of the redesigned models were compared with those of the conventional model. Computational fluid dynamics simulations were used to compare the performance of the redesigned model with that of the conventional model in terms of NO reduction and pressure drop. The redesigned system achieved a NO reduction rate of 6.9% below that of the conventional system, offering additional noteworthy benefits such as a 50% reduction in both pressure and overall length.

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Catalytic effect of diesel PM derived ash on PM oxidation activity

Cited by 32 publications

References 44 publications

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Investigation of the nanostructure and reactivity of soot particulates from diesel/methanol dual-fuel combustion with and without EGR

Numerical Study on Compact Design in Marine Urea-SCR Systems for Small Ship Applications

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