Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 20, 2023 - September 21, 2023
In Central Research Institute of Electric Power Industry (CRIEPI), we are developing the basic technology for a poly-generation system utilizing various fuels for capturing CO2. In the system, O2/CO2/H2O gasification technology is used. We are verifying the reaction characteristics of the fuel injected into the reductor and the tar generation behavior by using a "Gasification experimental facility simulating reductor of gasifier" that simulates reductor part of a two-stage entrained flow gasifier. In this study, we evaluated the tar generation behavior when gasifying coal and plastic mixed fuels. In the test conditions, part of the tar was decomposed in the gasifier when only coal was gasified. In the gasification of mixed fuel of coal and plastic, the amount of tar generated increased due to the gasification of plastic. It is assumed that decomposition of tar is promoted when the steam concentration in the gasifying agent is increased, but the amount of tar increased in the test conditions. In this study, it is considered that the amount of tar generated increased due to low temperature of the gasifier. In order to decrease the generation of tar, it is necessary to pay attention to the temperature for sufficient gasification.
