高温コークス炉ガスの改質(<総説特集>コークス炉ガス(COG)利用技術の最前線)

概要

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The crude coke oven gas (COG) produced from coke ovens, so-called hot COG, is refined without heat recovery in the present systems. If the hot COG containing tar and light oil is reformed at high temperature, the heat can be recovered without tarry material and the reformed gas can be used to produce methanol and DME. The hydrogen to CO ratio of the reformed gas is within the suitable range for the synthetic reactions, because the reformed gas of the tar and light oil supplies more CO. The reforming technologies with catalyst and without catalyst have been being developed in Japan. The hot COG produced from a test unit for coke production was treated in an experimental unit to develop the technology without catalyst. It was confirmed that most tar was partially oxidized, reformed with steam and converted to hydrogen and CO, utilizing the heat of the hot COG for the reaction. The feasibility study showed that hydrogen can be produced by this technology at a lower cost and higher efficiency than by the separation of cold refined COG.
一般社団法人日本エネルギー学会の論文
2006-05-20