Device for producing 1, 2, 4-trifluorobenzene based on microchannel technology

The utility model discloses a device for producing 1, 2, 4-trifluorobenzene based on a micro-channel technology, which comprises a first micro-channel reactor, a second micro-channel reactor, a centrifugal machine, a drying tank, a thermal decomposition reactor and a hydrofluoric acid spraying tank which are communicated with one another, a slag outlet of the thermal decomposition reactor is communicated with a solid waste recovery tank; a water phase outlet of the hydrofluoric acid spraying tank is communicated with a fluoboric acid solution recovery tank, and an oil phase outlet of the hydrofluoric acid spraying tank is sequentially communicated with a rectifying tower and a finished product tank; the gas phase outlet of the centrifugal machine is also sequentially communicated with a sulfuric acid solution spraying tank and a nitroso sulfuric acid storage tank; a heat exchange coil pipe is arranged in the thermal decomposition reactor, and a flow guide groove is formed in the inner wall of the heat exchang