Distillation device for preventing thermal cracking of vacuum residue

The utility model relates to the technical field of petrochemical engineering, and discloses a distillation device for preventing thermal cracking of vacuum residue, which comprises a distillation kettle, a receiving pipe, a vacuum pump, a gas detector and a PLC (programmable logic controller) electric control component, the distillation kettle is connected with the receiving pipe through a first connecting pipe, a condensing pipe is connected above the receiving pipe, and a water cooling pipe is wound outside the condensing pipe; the condenser pipe is connected with the vacuum pump through a second connecting pipe, the gas detector is arranged on the second connecting pipe and is electrically connected with the PLC electric control assembly, and the PLC electric control assembly is also electrically connected with the heating assembly of the distillation kettle and is used for controlling starting and stopping of heating of the distillation kettle. Compared with the prior art, the distillation device for pre