Modeling the gasification reaction is one of the important research items to clarify the phenomenon in coal gasifier. For instance, optimization of design, prediction of performance and evaluation of coal type.   In IGCC, gasifier is operated under pressurized condition, about 2.5-3MPa, and the gasification temperature becomes the high temperature of 1500 degree C or more. Then, CRIEPI developed Pressurized Drop Tube Furnace (PDTF) with the specification of the max. 1800 degree C and max. 2.5MPa, and is conducting the experiment and the modeling of the coal pyrolysis and the char gasification reaction under the high temperature and pressurized conditions.

Using this PDTF and pressurized thermo gravimeter (PTG), it is possible to obtain reaction rate in wide range of reaction temperature.

< Pressurized Drop Tube Furnace >

< Pressurized Thermo Gravimeter >

There are two major gasification reaction in the gasifier.

   C+CO₂→2CO, C+H₂O→CO+H₂

PDTF and PTG are equipments to measure these reaction rate, and two equipments are used properly according to the reaction condition, and it experiments efficiently. The reaction model is constructed with a detailed experimental results that imitates the condition in the actual gasifier. Then, these results are reflected in the numerical simulation technology.