The invention relates to the technical field of
solid fuel gasification and gasification collection utilization and provides a
tar gasification circulating device. The device comprises a separator which is used for being connected with a gasification furnace, a
tar gasification
pipe and a filter device. A first liquid inlet, a first liquid outlet which is used for being communicated with a
drying chamber of the gasification furnace and a second gas outlet which is used for being communicated with a gasification chamber of the gasification furnace are formed in a
tar gasification channel, and a first
flue gas outlet which is formed in a
flue gas channel is connected with the filter device.
Tar generated by the gasification furnace can be recycled into the gasification furnace, so that the tar is subjected to repeated splitting
decomposition. The separator is provided with a first air inlet, a first air outlet and a first liquid drainage hole, the first air inlet is used for being communicated with the
drying chamber and a
pyrolysis chamber which are arranged in the gasification furnace, the first air outlet is used for being connected with the gasification chamber which is arranged in the gasification furnace, and the first liquid drainage hole is communicated with the first liquid inlet.
Mixed gas generated in the gasification furnace is filtered and separated by the separator, the
moisture in the
mixed gas is removed, and the calorific value of the
fuel gas can be increased.