2015 年 57 巻 182 号 p. 280-285
In this review, development and future plan of IHI original gasifier TIGAR® (Twin Ihi GAsifieR) are described. IHI has developed gasification technology for lignite coal, TIGAR® is applied the Circulating Fluidized Bed technology, operated under atmospheric pressure and the steam gasification agent. TIGAR® gasifier features a simple coal feed system with coarse particle & high moisture, and slag free gasifier because of low gasification temperature. Furthermore TIGAR® has the advantage to utilize a various kinds of feedstock such as a biomass not only the coal because of the atmospheric pressure which is not required the pressurized and dry feeding. Through various fundamental researches, the design concept of gasifier has been obtained. And 6 tons/day pilot plant was built for the verification of the process in IHI factory. Those results showed that syngas with high calorie and high hydrogen content can be produced. After successful operation of pilot plant, IHI has built 50 tons/day prototype plant at Fertilizer factory of Indonesia in 2014 and is ongoing the demonstration operation from 2015. IHI will have a plan to carry out the demonstration of TIGAR® process for about 4,000 hours until 2017. IHI is targeting a highly efficient use of unused energy by TIGAR® technology.
