抄録
MEET (Multi-staged Enthalpy Extraction Technology) system is a new coal/wastes-fired power generation system. In order to realize MEET system, the demonstration plant of commercial scale, MEET II, was completed. The capacity of MEET II is 2 t/day of coal or 4 t/day of RDF. There were no such small-scale plants which can utilize energy from solid fuel. MEET II consists of pebble bed slagging-gasifier, high-temperature air generator and high temperature air combustion boiler. Gasification by high-temperature air results in higher calorific value of syngas. Cleaned-up syngas is used as a fuel of boiler, and for preheating air to high temperature. Tests at MEET II were carried out step by step. In order to obtain higher gasification efficiency, we modified some parts of the gasifier and then obtained targeted high-calorific syngas on pulverized coal test. Temperature at the pebble bed was kept above the ash fusion temperature and slag was extracted smoothly.
