CRIEPI and Mitsubishi Heavy Industries Co., Ltd. set up the bench scale gasifier (2t/d coal gasifier) in 1983 and have developed a prototype of the air blown pressurized two-stage entrained flow gasifier with dry coal feed system. Recent years, in order to support the IGCC demonstration plant project, our institute is developing the evaluation tools to optimize the design and operation of the coal gasifier. Our tools integrate the experimental technique with the numerical analysis technology for the securing of reliability, the achievement of highly efficiency and the cost reduction.

   The numerical simulation approach is one of the most effective methods understanding the phenomena in the coal gasifier in order to optimize the design and operation of the gasifier.

   CRIEPI developed three dimensional numerical analysis technology for predicting gasification performance of the gasifier. To consider a variety of phenomena such as the gas flow, the particle transport, the heat transfer, and chemical reactions, a lot of analytical models based on the experimental results have been introduced in our numerical analysis technology.

< Evaluation Tool for Design and Operation of Gasifier >

< Outline of Numerical Simulation Technology >

The phenomena in coal gasifier can be predicted by adding the coal gasification models (pyrolytic reaction, char reaction and gas phase reaction) to the 3D simulation method of particle-gas two-phase flow.