Parallel path, downdraft gasifier apparatus and method

摘要

A gasifier is disclosed. The gasifier may include a housing and a refractory system contained within the housing. The refractory system may comprise an upper manifold, an intermediate portion, and a lower manifold. The refractory system may also include columnar cavities. The columnar cavities may extend vertically through the intermediate portion and place the upper manifold in communication with the lower manifold.