METHOD AND APPARATUS FOR RECYCLING METHANE

摘要

The present invention relates to a method and gasification system for recycling methane-rich gas from syngas stream emanating from fluidized bed reactor and then returning the methane to the fluidized bed reactor. The method comprises recovering methane-rich gas from the synthesis gas and delivering at least a portion of the recovered methane-rich gas to the fluidized bed reactor. Methods to recover methane- rich gas from syngas at different steps in the gasification system are also provided herein.