Relation analysis on emission control and economic cost of SCR system for marine diesels

Guang-wei, Zhang; Yan, Haoyu; Li, Tinghui; Zhu, Yuanqing; Zhou, Song; Zhou, Weihao

doi:10.1016/j.scitotenv.2021.147856

Cited by 32 publications

(11 citation statements)

References 10 publications

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“…Currently, NO x emissions from mobile sources (heavy trucks, cargo ships) are the main cause of many serious environmental problems, including ozone depletion, water eutrophication, photochemical smog, and acid rain. Meanwhile, NO x emissions also can cause serious health risk to humans. , The reduction of NO x emissions from mobile source exhausts has become an urgent environmental problem, and diesel exhaust post-treatment technology is being widely studied as the most effective means of NO x elimination. − The main technologies used for elimination of NO x from mobile source diesel engine exhausts are selective catalytic reduction (SCR), − NO x storage/reduction, − and nonselective catalytic reduction technologies. , Of these, NH 3 –SCR technology is the most effective, most widely used, and most commercially available technology for NO x removal. In marine engines, high-pressure selective catalytic reduction (HP-SCR) systems arranged in front of the turbine are more commonly used.…”

Section: Application Of Porous Metal Oxide Catalysts For Catalytic Pu...mentioning

confidence: 99%

Research Progress on Preparation of Metal Oxide Catalysts with Porous Structure and Their Catalytic Purification of Diesel Engine Exhausts Gases

Zhou,

Wang,

Gao

et al. 2024

ACS Catal.

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Because of their special physicochemical properties, pore-structured metal oxide catalysts are widely used in environmental catalysis, energy chemicals, fuel cells, medicine, and other related fields. In recent years, these oxides have also been increasingly studied in the catalytic purification of diesel engine exhaust gases. In this paper, the research progresses of preparation methods of porous metal oxide catalysts and their application in the catalytic purification of diesel engine exhaust were reviewed. The advantages and disadvantages of different methods for the synthesis of porous metal oxide catalysts were elaborated, as well as the mechanism comparison of different types of porous metal oxide catalysts in catalytic purification of diesel engine exhaust pollutants. Finally, the current issues on the preparation of porous metal oxide catalysts and their development trends in application of diesel engine exhaust purification were summarized and discussed. The pore-structured metal oxide catalysts are beneficial for improving the contact efficiency between catalysts and pollutants, which can enhance the catalytic purification efficiency of catalysts. Meanwhile, the intrinsic activity is the most fundamental factor for determining their catalytic activity except for porous structure effects. In addition, this paper can help researchers to deeply understand the important effect of porous metal oxide catalysts in the treatment of diesel engine exhaust pollutants and provide theoretical guidance for the design and development of high-efficiency catalysts.

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Section: Application Of Porous Metal Oxide Catalysts For Catalytic Pu...mentioning

confidence: 99%

Research Progress on Preparation of Metal Oxide Catalysts with Porous Structure and Their Catalytic Purification of Diesel Engine Exhausts Gases

Zhou,

Wang,

Gao

et al. 2024

ACS Catal.

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“…Moreover, the sustainability of the transport business is related to profitability and demand, which are influenced by reduced operating costs [2]. Currently, fuel cost is the biggest contributor to the overall operating costs of the shipping industry [3]. However, owing to increasing concerns over greenhouse gas emissions, this trend is expected to change in the future.…”

Section: Introductionmentioning

confidence: 99%

Techno–Economic and Risk Evaluation of Combined Cycle Propulsion Systems in Large Container Ships

2022

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Owing to the stringent regulations on pollutant emissions that are imposed by the International Maritime Organization and increasing fuel prices, there has been significant research on developing cleaner fuels and novel propulsion systems. This study presents a techno-economical and risk assessment method for evaluating alternative propulsion technologies and cleaner fuels as substitutes for heavy fuel oil and two-stroke diesel engines in marine transportation. This analysis was carried out for two different journeys. Accordingly, we evaluated the economic benefits of using an enhanced intercooler/reheat combined gas and steam cycle or simple and intercooler/reheat combined gas and steam cycles that were fueled by marine diesel oil or liquified natural gas instead of a two-stroke diesel engine that was fueled by MDO as the propulsion system in a large container ship, considering different shipping routes. The results highlighted the advantages of implementing the simple, intercooler/reheat, and enhanced combined gas and steam cycles as propulsion systems. A sensitivity analysis was performed to investigate the effects of the fuel cost, capital cost, and hull fouling resistance on the economic analysis. For the routes that were considered herein, compared to a two-stroke diesel engine that was fueled by MDO, the simple, intercooler/reheat, and enhanced gas and steam combined cycles that were fueled by LNG increased the net present value by 78.3%, 78.5%, and 76.4%, respectively, and reduced the payback period by 38.8%, 38.9%, and 35%, respectively. Furthermore, the fuel and capital costs had a significant influence on the overall economic profit.

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“…lorries, cargo ships, etc.). 12 An additive-free approach has, in contrast, focussed upon the behaviour of NO x over coinage-metal catalysts, where partial reduction to N 2 O has been found to occur at very low temperatures (c.100 K). 9,10,[13][14][15][16] Now, to be clear, N 2 O as an end-product is not without its drawbacks, chief among which is its potency as a greenhouse gas, but it is indisputably less damaging to health and the environment than NO x when released in the lower atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Partial reduction of NO to N₂O on Cu{311}: role of intermediate N₂O₂

Sitathani

Jenkins

Temprano

2022

Catal. Sci. Technol.

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Relation analysis on emission control and economic cost of SCR system for marine diesels

Cited by 32 publications

References 10 publications

Research Progress on Preparation of Metal Oxide Catalysts with Porous Structure and Their Catalytic Purification of Diesel Engine Exhausts Gases

Research Progress on Preparation of Metal Oxide Catalysts with Porous Structure and Their Catalytic Purification of Diesel Engine Exhausts Gases

Techno–Economic and Risk Evaluation of Combined Cycle Propulsion Systems in Large Container Ships

Partial reduction of NO to N₂O on Cu{311}: role of intermediate N₂O₂

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Relation analysis on emission control and economic cost of SCR system for marine diesels

Cited by 32 publications

References 10 publications

Research Progress on Preparation of Metal Oxide Catalysts with Porous Structure and Their Catalytic Purification of Diesel Engine Exhausts Gases

Research Progress on Preparation of Metal Oxide Catalysts with Porous Structure and Their Catalytic Purification of Diesel Engine Exhausts Gases

Techno–Economic and Risk Evaluation of Combined Cycle Propulsion Systems in Large Container Ships

Partial reduction of NO to N2O on Cu{311}: role of intermediate N2O2

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Partial reduction of NO to N₂O on Cu{311}: role of intermediate N₂O₂