A Study on the Emission Characteristics for Blended Power Bio-Fuel Oil

Ha, Jong-Han; Jeon, Cheol-Hwan; Kwon, Yongchai

doi:10.7316/khnes.2015.26.5.484

Cited by 10 publications

(3 citation statements)

References 1 publication

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“…Ships on international voyages make long trips and consume considerable fuel, so relatively inexpensive scrubber installations are proliferating in place of expensive fuel oil [2]. Scrubbers for ships are very vulnerable to pitting and crevice corrosion due to the chloride environment caused by the use of seawater as washing water and sulfur components generated during the desulfurization process [3]. Therefore, scrubbers require further technological development to improve corrosion and pitting resistance.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical characteristics and damage mechanism in scrubber washing water of UNS N08367 with plasma ion nitriding and electropolishing

Kim,

Hwang

2024

Preprint

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In this investigation, electropolishing and plasma ion nitriding were applied to super austenitic stainless steel for the purpose of improving its corrosion and pitting resistance. Electrochemical experiment were conducted with washing water collected directly from the ship’s scrubber. After electropolishing, the surface roughness was improved by about 73.6% compared to mechanical polishing. Following plasma ion nitriding, expanded austenite and chromium nitride were observed on the surface, and the thickness of the nitrided layer was measured as about 10 μm. A hysteresis loop was observed in the cyclic potentiodynamic polarization curves of mechanical polishing and electropolishing, and the areas were calculated as 23.33mW/cm2 and 0.17mW/cm2, respectively. The polarization curve of plasma ion nitriding presented perfect passivation characteristics. Accordingly, mechanical polishing and electropolishing revealed local corrosion, whereas plasma ion nitriding presented a tendency towards general corrosion. In the mechanical polishing, electropolishing, and plasma ion nitriding, the corrosion current densities were 0.665 ㎂/cm2, 0.093 ㎂/cm2, and 16.47 ㎂/cm2, respectively, and the maximum damage depth was observed to grow progressively smaller from plasma ion nitriding to electropolishing and then mechanical polishing

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Section: Introductionmentioning

confidence: 99%

Electrochemical characteristics and damage mechanism in scrubber washing water of UNS N08367 with plasma ion nitriding and electropolishing

Kim,

Hwang

2024

Preprint

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“…Austenitic stainless steel, which has excellent corrosion resistance, wear resistance, and heat resistance, is generally used as a material for exhaust gas aftertreatment devices on ships. However, these devices for ships use seawater for washing water, accelerating local corrosion damage due to sulfate and chloric acid generated during the desulfurization process [8]. In addition, because exhaust gas is exposed to a harsh, corrosive, high-temperature environment, the corrosion problem still occurs in an exhaust gas aftertreatment device made of general austenitic stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Properties of Super Austenite Stainless Steel with Temperature in a Green Death Solution

Hwang

Kim

2023

Coatings

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In this investigation, potentiodynamic polarization experiments were conducted on UNS S31603 and UNS N08367 in a modified green death solution, which simulates the environment of a desulfurization device (scrubber), using temperature as a variable. A Tafel analysis showed that the corrosion current density of UNS S31603 at the highest temperature (90 °C) was approximately 4.5 times higher than that of UNS N83067. A surface analysis using a scanning electron microscope revealed that pitting and intergranular corrosion occurred simultaneously in UNS S31603, whereas UNS N83067 exhibited a stronger tendency toward intergranular corrosion. After electrochemical experiments, the corrosion rates according to maximum damage depth were compared with the corrosion rates according to corrosion current density; the relationships between the two values were expressed as α values. The α values of UNS N08367 were higher than those of UNS S31603, indicating that the local damage rate of UNS N08367 was higher.

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“…14 Under these circumstances, the power producers wanted an easier way to deal with the RPS system, which is by converting fuel through retrofitting of existing HFO plants. 15…”

Section: Introductionmentioning

confidence: 99%

Economic effects of the liquid biofuel industry in South Korea using input–output analysis

Seo¹,

Kim

Jeon

2019

Energy & Environment

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Bio-energy is a research field that is of worldwide interest. South Korea, which imports all of its heavy fuel oil for consumption, passed a new law allowing bio-heavy oil made from animal fat, by-product of biodiesel processes, palm oil, and other leftover oil to be used to generate electricity in place of heavy fuel oil. As there is lack of policy research with respect to liquid biofuels, the purpose of this study is to define the bio-heavy oil industry in South Korea and to investigate the economic effects of bio-heavy oil. An input–output analysis model was used and demonstrated that the production-, value-added-, import-, and employment-induced effects of the bio-heavy oil industry were larger than those induced by the heavy fuel oil industry. As the import of fuel by the heavy fuel oil industry was greater than the bio-heavy oil industry, the import substitution effect of the bio-heavy oil industry was found to be greater. This resulted in a positive value for the net-induced effect of the bio-heavy oil industry. When considering the global concern with respect to the development and expansion of biofuel feedstock, this study shows the possibility of transforming heavy fuel oil plants distributed around the world into renewable energy sources.

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A Study on the Emission Characteristics for Blended Power Bio-Fuel Oil

Cited by 10 publications

References 1 publication

Electrochemical characteristics and damage mechanism in scrubber washing water of UNS N08367 with plasma ion nitriding and electropolishing

Electrochemical characteristics and damage mechanism in scrubber washing water of UNS N08367 with plasma ion nitriding and electropolishing

Electrochemical Properties of Super Austenite Stainless Steel with Temperature in a Green Death Solution

Economic effects of the liquid biofuel industry in South Korea using input–output analysis

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