Biomass off-peak electricity coupling type VOC gas treatment system

The utility model discloses a biomass off-peak electricity coupling type VOC gas treatment system which comprises a drying furnace, a biomass gasifier, an incinerator, a waste heat power generation unit, a first heat exchanger and a first heat source circulation unit. An exhaust pipe of the drying furnace is provided with a branch pipeline which is connected with a second heat exchanger through asecond fan and a second air valve, and the second heat exchanger is connected with a catalytic combustion device; the second heat exchanger is connected with the second heat source circulation unit; the second heat source circulation unit comprises a second heat conduction oil tank, a second oil pump and a second electric heater, the second heat conduction oil tank and the second heat exchanger form a circulation pipeline through the second oil pump, and the second electric heater is installed in the second heat conduction oil tank and connected with the mains supply through a wire. The heating device has the advantag