二塔式循環流動層による褐炭ガス化(<特集>RGB三部会[リサイクル・ガス化・バイオマス]合同シンポジウム-廃棄物,バイオマス,石炭等利用技術の最新動向-)

概要

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The importance of coal gasification technology is increasing in the world due to the rising cost of oil and natural gas. Lignite coal is suitable for gasification because of its higher reactivity, and considering its huge reserve, simple and cheap gasifier is needed. Circulating fluidized bed with twin reactor (riser combustor and bubbling bed gasifier) is suitable for lignite coal gasification because it can produce syngas with high calorific value without using high temperature or pressurized condition. IHI has developed TIGAR^[○!R] (Twin IHI Gasifier) process based on our commercialized circulating fluidized bed technology. This process can produce syngas with high calorific value and also high hydrogen content with air under atmospheric pressure. Also, TIGAR^[○!R] can accept wide variety of fuel like low rank coal or biomass due to the stable reaction by fluidized bed. In this paper, some results obtained by process simulation, cold model test and pilot scale experiments are shown.
2011-03-20