Refractory walls, and gasification devices and methods

A gasification device for gasification of one or more carbonaceous fuels, comprising:

• a gasifying apparatus comprising a refractory wall defining a gasification chamber for the gasification, at least a part of the refractory wall comprising:
• a hotface layer comprising a hotface surface configured to define the gasification chamber,
• a backing layer around the hotface layer,
• a cooling layer around the backing layer and configured to cool the hotface layer via the backing layer,
• a compressible layer around the cooling layer, and
• a shield around the compressible layer.

A gasification process comprising:

• introducing one or more carbonaceous fuels and one or more oxidizing streams into a gasifying apparatus. the gasifying apparatus comprising a refractory wall defining a gasification chamber for the gasification with at least a part of the refractory wall comprising:
• a hotface layer configured to define the gasification chamber,
• a backing layer around the hotface layer,
• a cooling layer around the backing layer, and
• a compressible layer around the cooling layer;
• gasifying the one or more carbonaceous fuels in the gasifying apparatus to at least produce syngas and slag;
• and
• cooling the hotface layer via the backing layer by the cooling layer so that a portion of the slag deposits on at least a part of the hotface layer.