Study on test instrument and filtration theory of the carbonized micron wood fiber DPF

Guo, Xiurong; Du, Danfeng; Wang, Fenghu; Ma, Yan; Yang, Chunmei; Han-zhao, Zhang

doi:10.1016/j.micromeso.2011.01.013

Cited by 10 publications

(11 citation statements)

References 8 publications

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“…13 Wood fiber is a kind of natural porous biomass material containing a large number of different diameter pores, which can not only adsorb PM, including nanoscale particulates but also serve as catalyst carriers with low back pressure 14 . Compared with the inorganic materials, such as cordierite and silicon carbide that are widely used as a catalyst carrier in the area of exhaust purification, the wood fiber filter has the properties of multi‐aperture, high porosity, large specific surface, excellent adsorption capacity for PM, including ultrafine particles, low cost, and easy to be used as fuel or fertilizer after used 14,15 . The combination of NTP with Nano‐CeO 2 supported on the wood fiber filter can remove PM and NO x simultaneously at a low‐temperature condition.…”

Section: Introductionmentioning

confidence: 99%

“…14 Compared with the inorganic materials, such as cordierite and silicon carbide that are widely used as a catalyst carrier in the area of exhaust purification, the wood fiber filter has the properties of multi-aperture, high porosity, large specific surface, excellent adsorption capacity for PM, including ultrafine particles, low cost, and easy to be used as fuel or fertilizer after used. 14,15 The combination of NTP with Nano-CeO 2 supported on the wood fiber filter can remove PM and NO x simultaneously at a low-temperature condition. In this paper, a kind of exhaust purification device (EPD) is designed, and it can purify the PM and NO x effectively by the synergetic effect of NTP and Nano-CeO 2 supported on micro-wood fiber.…”

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confidence: 99%

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Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO₂ supported on the wood fiber filter

Guo

Wang

et al. 2020

Env Prog and Sustain Energy

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In order to reduce the emissions of pollutants from diesel exhaust, a kind of exhaust purification technology by the combination of non-thermal plasma (NTP) with Nano-CeO 2 supported on the micro-wood fiber filter is proposed, and a simulation test bench is designed to test the influence factors of purification efficiency. It can be seen from the simulation experiments, the purification efficiency for particulate matter (PM) and NO x can be enhanced from 37 and 28% to 53 and 38% when the content of Nano-CeO 2 is from 0 to 16.92 wt%. The test results also show that the purification efficiency of PM and NO x increases with the rising of temperature between 40 and 160 C. Furthermore, when the mass of PM is no more than 30 mg, the purification efficiency of PM and NO x increases with the rising of PM mass. At last, the experiment shows that when the input voltage is between 6 and 12 kV, the corresponding purification efficiency increases with the rising of voltage. Temperature 160 C, catalyst 16.92 wt%, input voltage 12 kV, and PM 30 mg are the best experimental conditions for this study, in which the corresponding purification of PM and NO x is 66 and 53%, respectively. This can provide an experimental basis for the practical application of NTP and wood fiber filters in the field of exhaust gas purification.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO₂ supported on the wood fiber filter

Guo

Wang

et al. 2020

Env Prog and Sustain Energy

Self Cite

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“…The wood fiber, as a kind of widespread porous materials in nature, has many virtues of high adsorption efficiency, low filtration resistance, less requirement for fuel quality, simple manufacturing procedure and very low price. The wood fiber DPF, combined with air cooling device, can be easily installed at the position of the tail pipe where the temperature is lower than other place of the exhaust system [6]. Different structure, such as solid cylindrical and gear-shaped wood fiber filter has different structural stability and filtering ability.…”

Section: Introductionmentioning

confidence: 99%

Performance study about a new kind wood fiber filter element utilized in capturing diesel particulate material

Guo

et al. 2019

J Wood Sci

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A new kind diesel particulate filter (DPF) with gear-shaped wood fiber filter element is researched and it has very low cost and less requirement for fuel quality. In this paper, the mathematical models of the filtration resistance and the structural parameters of the wood fiber filter element were established first. Then by SEM, the advantages of this material can be proved. Finally, to verify reliability and efficiency of the filter elements with different structure parameters, the filtration resistance change were compared and analyzed through a DPF bench test based on meeting the demand of filtration efficiency that is above 85%. The test results showed that the filtration efficiency is more than 85% and the filtration resistance is below 3 kPa. Meanwhile, the life span of this new kind wood fiber filter is more than 90 h and the cost of it is very low.

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“…Guo et al. 16 concluded that for the muffler filter design, we should be careful to select purification material pore and give preference to larger diameter and longer length. Pan et al.…”

Section: Introductionmentioning

confidence: 99%

Computational fluid dynamics simulations of the flow field characteristics in a novel exhaust purification muffler of diesel engine

Zhang

Wei

et al. 2018

Journal of Low Frequency Noise, Vibration and Active Control

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The purpose of this paper is to improve the emission performance of diesel engines. A novel exhaust purification muffler was proposed and designed. The flow field characteristics of the exhaust purification muffler were studied based on the finite volume method, the pressure loss of the exhaust purification muffler was 3315 Pa, and the pressure loss of the exhaust purification muffler was just 2% higher than the original muffler. Then, a three-dimensional numerical simulation model was established and used to investigate the effect of different expansion ratio, cavity length ratio, and ratio of length to diameter on the flow field characteristics in an exhaust purification muffler of diesel engine. The study was shown that the porous media (ceramic foam) had a great influence on the flow field distribution, where the air flow velocity was stable and the pressure distribution was trapezoidal, having a good pressure reduction and deceleration effect. With the increase of the expansion ratio parameter, the airflow cross-section area changed when air entered into the inlet silencing cavity, which had great influence on the velocity field and the pressure loss. Because of the improvement of cavity length ratio parameter, the flowing distance in the inlet silencing increased, which caused more local turbulence and pressure fluctuation. Also with the increase of the ratio of length to diameter parameter, the volume of inlet silencing chamber and the air flow space increased. The change of the structural parameters of each scheme had a certain influence on the pressure loss. The maximum pressure loss changing value among the expansion ratio schemes was 878 Pa, then the maximum pressure loss changing value among the cavity length ratio schemes was 328 Pa, and it was 89 Pa among the cavity length ratio schemes. The pressure loss caused by the expansion ratio parameter changed greatly, and the pressure loss changing value caused by the change of the cavity length ratio parameter and the ratio of length to diameter parameter was relatively small. In this paper, a muffler which contained a ceramic foam and had the functions of exhaust soot purification and noise elimination was supplied. The effects of the structure factors on flow field characteristics were studied. The guidance for the design and improvement of muffler is able to be supplied in this paper.

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Study on test instrument and filtration theory of the carbonized micron wood fiber DPF

Cited by 10 publications

References 8 publications

Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO₂ supported on the wood fiber filter

Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO₂ supported on the wood fiber filter

Performance study about a new kind wood fiber filter element utilized in capturing diesel particulate material

Computational fluid dynamics simulations of the flow field characteristics in a novel exhaust purification muffler of diesel engine

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Study on test instrument and filtration theory of the carbonized micron wood fiber DPF

Cited by 10 publications

References 8 publications

Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO2 supported on the wood fiber filter

Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO2 supported on the wood fiber filter

Performance study about a new kind wood fiber filter element utilized in capturing diesel particulate material

Computational fluid dynamics simulations of the flow field characteristics in a novel exhaust purification muffler of diesel engine

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Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO₂ supported on the wood fiber filter

Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO₂ supported on the wood fiber filter