燃料超低硫黄化,軽質化の重要性(<特集>石油系燃料油及び重質油のクリーン化技術の最近の進展)

概要

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Motor vehicles are one of the large origins of NO_x and SPM emissions in modern urban area in Japan. While various kinds of exhaust gas posttreatments are developed to reduce NO_x and SPM emissions, they fatally lose their functions even when they are exposed to very small amount of SO_2 contained in exhaust gas. Therefore in order to reduce NO_x and SPM emissions from motor vehicles, SO_2 emission from engines should be reduced. Aiming to reduce SO_2 emission from engines, ultra-deep hydrodesulfurization processes are newly developed to produce ultra-low-sulfur motor fuels. After a lot of efforts, Japanese petroleum refineries have succeeded first in the world to commercially produce gas oil with 10 ppm sulfur. Since middle-east petroleum, the most part of petroleum consumed in Japan, contains higher content of sulfur and metals, ceaseless efforts to develop advanced processes for hydrodesulfurization and heavy-oil cracking are necessary to produce ultra clean motor fuels economically in Japan. For the purposes, it is important to develop highly active HDS catalyst with cracking activity and long life.
一般社団法人日本エネルギー学会の論文
2010-03-20