Three-way catalytic converter and device for processing tail gas

A three-way catalytic converter assembly, comprising:

• a cylindrical housing configured to convey a tail gas, the cylindrical housing including:
• a tail gas inlet and a tail gas outlet each provided at a top of the cylindrical housing, and an air-mixing inlet connecting port and a spare connecting port each provided at a bottom of the cylindrical housing so as to extend parallel to each other;
• at least one three-way catalytic filter element arranged in the cylindrical housing;
• and
• a heater circumferentially wrapped around an outer side wall of the cylindrical housing, the heater configured to be energized so as to heat the at least one three-way catalytic filter element;
• wherein the air-mixing inlet connecting port is arranged upstream of the at least one three-way catalytic filter element so as to introduce secondary air into the tail gas, and
• wherein the spare connecting port is arranged downstream of the at least one three-way catalytic filter element so as to discharge treated tail gas when the tail gas outlet is clogged.