Pyrolysis plastic oil production and optimisation followed by maximum possible replacement of diesel with bio-oil/methanol blends in a CRDI engine

Mariappan, Murugan; Panithasan, Mebin Samuel; Venkadesan, Gnanamoorthi

doi:10.1016/j.jclepro.2021.127687

Cited by 63 publications

(18 citation statements)

References 94 publications

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“…41 Also, the higher oxygen concentration in the fuel improves the combustion process leading to increased NOx formation due to the increase in temperature inside the combustion chamber. 42 Figure 12 shows the NOx emission variation with respect to an increase in load. The figure shows that NOx emission was more for biofuel blends than diesel fuel at all load conditions, and NOx emission increases with an increase in load.…”

Section: Emission Outcomesmentioning

confidence: 99%

Evaluating the outcomes of a single-cylinder CRDI engine operated by lemon peel oil under the influence of DTBP, rice husk nano additive and water injection

Panithasan

Venkadesan²

2021

International Journal of Engine Research

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In the search for an alternative energy source with lesser pollution for transportation needs, bio-oil, a denser and viscous fuel that needs a transesterification process, have been widely considered for diesel engines. However, these problems are solved by using low viscous biofuel, but this improvement also significantly leads to increased NOx emission. Hence this present study investigates the usage of a low viscous biofuel in the CRDI engine with measures to reduce NOx emission through water injection technique. The low viscous bio-oil was used in this study along with an ignition enhancer (di-tert-butyl-peroxide), non-metallic nano additive (rice husk). They were tested in a constant speed, single-cylinder, diesel engine for various loads. Considering the brake thermal efficiency (BTE), 2% and 150 ppm were selected as the optimum value after testing five ratios (1%, 1.5%, 2%, 2.5% and 3%) of di tert butyl peroxide (DTBP) and four ratios (50, 100, 150 and 200 ppm) of rice husk (RH). The lemon peel oil (LPO) with the optimum additive ratio produced 30.69% BTE, which was 4.7% lesser than diesel fuel. A considerable decrease in fuel consumption and emissions except for nitrogen oxides (NOx) is recorded. NOx emission increased by 17.3% for the biofuel blend containing RH and DTBP. To control NOx emission, 2% of water was injected into the intake manifold with the fresh intake air. Two percent by vol. was finalised after experimenting four ratios (1%, 2%, 3% and 4%) of water addition. This 2% water reduces 11% of NOx emission and affects the other outputs, denoted with the 8.9% reduced BTE value compared with diesel fuel. Thus, the LPOC combination proved to operate well in the CRDI engine and produces lower NOx emissions than other LPO blends.

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Section: Emission Outcomesmentioning

confidence: 99%

Evaluating the outcomes of a single-cylinder CRDI engine operated by lemon peel oil under the influence of DTBP, rice husk nano additive and water injection

Panithasan

Venkadesan²

2021

International Journal of Engine Research

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“…With 31.25% brake thermal efficiency and, at full load, 2.3, 20.28, 34.61 g/h of hydrocarbon, nitrogen oxides, carbon monoxide, and smoke, respectively, these gains demonstrated a notable improvement. The findings demonstrated that plastic oil may replace up to 40% of diesel fuel and that the drawbacks of using plastic oil could be offset by combining methanol fuel and a diethyl ether additive [8].…”

Section: Introductionmentioning

confidence: 98%

Effect of Injection Timing in Direct Injection Diesel Engine using Plastic Oil Diesel Blends with Biodiesel as an Additive

Chandrashekar

Banapurmath

et al. 2023

ARFMTS

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Environmental Concern and depletion in petroleum reservoirs caused interest in search of alternate energies for internal combustion engine. Waste plastic materials being non-biodegradable, can be suitably processed using pyrolysis to obtain liquid fraction which has properties like petroleum fuels. 20% plastic oil (PO) blends with diesel may be utilized in diesel engines. However, adding biodiesel by 20% being renewable in nature reduces emissions. In the present work 20% PO and 20% biodiesel blend is considered to access the impact of injection timing on the engine performance. Engine tests were performed at four different injection timing 230, 210, 190, 250 and 270 before TDC. The blend (PO20+60D+B20) showed improved performance with advancing of injection timing with higher in-cylinder pressures and rapid heat release rate. Retarding the injection timings results in early combustion before the working stroke which reduces thermal efficiency. Further retarded IT of 19o bTDC results in lower in-cylinder pressures which lead to reduced engine performance. However, advancing IT to 210 improvements in engine performance with higher BTE, and lower emissions of HC, CO, and Smoke respectively with higher NOx.

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“…Also, the soot level reduced, while NO x level increased with inserting M100. Mariappan et al 23 optimized the production of bi-oil from pyrolysis plastic oil and then assessed the combustion and emission aspects of a CI engine driven by bio-oil/D100 blends and bi-oil/M100 (15 and 20%)/ diethyl ether mixtures. They mentioned that the addition of M100 instigated a reduction in the CO, UHC, soot levels, while the NO x concentration increased.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the combustion, emission, and stability features of diesel-methanol blends using n-decanol as cosolvent

EL‐Seesy

Waly

Nasser

et al. 2022

Sci Rep

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This research endeavored to boost the applicability of methanol in CI engines utilizing n-decanol as cosolvents. The work was split into binary phases. Firstly, the stabilities of pure methanol (M100) and hydrous-methanol (MH10), with diesel as a reference fuel, were examined applying various temperatures: 10 °C, 20 °C, and 30 °C. The findings showed that the M100-diesel and MH10-diesel combinations were unstable. Thus, n-decanol was utilized as a cosolvent. Following by the engine combustion and emissions characteristics were evaluated by manipulating three proportions of M100-diesel mixtures with n-decanol. Three mixtures comprised of 5, 10, and 15% M100 with 20% n-decanol, which are denoted as M5, M10, and M15, correspondingly. These combinations were assessed via thermogravimetric assessment, and their physicochemical properties were assessed corresponding to the ASTM. The maximum in-cylinder pressure, heat release rate, and pressure rise rate diminished by 10, 11, and 10%, respectively, for the M100/diesel/n-decanol combinations compared with the diesel oil. The brake thermal efficiency lowered by 10%, whereas the brake specific fuel consumption enlarged by 10% for the combinations compared with the diesel. NOx and smoke opacity levels diminished by about 30 and 50%, respectively, whereas the CO and UHC enlarged by about 50 and 60% for the blends compared with the diesel oil.

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Pyrolysis plastic oil production and optimisation followed by maximum possible replacement of diesel with bio-oil/methanol blends in a CRDI engine

Cited by 63 publications

References 94 publications

Evaluating the outcomes of a single-cylinder CRDI engine operated by lemon peel oil under the influence of DTBP, rice husk nano additive and water injection

Evaluating the outcomes of a single-cylinder CRDI engine operated by lemon peel oil under the influence of DTBP, rice husk nano additive and water injection

Effect of Injection Timing in Direct Injection Diesel Engine using Plastic Oil Diesel Blends with Biodiesel as an Additive

Improvement of the combustion, emission, and stability features of diesel-methanol blends using n-decanol as cosolvent

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