Cyclone separator and cyclone separation method

A cyclone separator comprising a shell and a core tube, wherein an upper end of the shell is provided with a gas inlet, and a lower end of the shell is provided with a shell outlet;

• an opening at a lower end of the core tube is provided inside the shell;
• the lower end of the core tube is provided with a baffle structure, and at least a portion of the baffle structure extends vertically;
• wherein the shell comprises a first cylindrical barrel and a first conical barrel connected to a lower end of the first cylindrical barrel, and the shell outlet is located at a lower end of the first conical barrel;
• wherein the baffle structure extends from the lower end of the core tube to the shell outlet, an annular space is formed between the baffle structure and the shell, and an inner space is formed on an inner side of the baffle structure;
• wherein the baffle structure has an opening through which the annular space is communicated with the inner space, and at least part of the opening of the baffle structure is provided on a portion of the baffle structure located within the first conical barrel;
• wherein the opening of the baffle structure comprises an arc-shaped opening and a spiral opening;
• wherein the baffle structure comprises a first baffle fixedly connected to the lower end of the core tube, and the first baffle extends along an axial direction of the core tube and along part of a circumferential area of a sidewall of the core tube, so as to define the arc-shaped opening extending along the other part of the circumferential area of the sidewall of the core tube;
• wherein a lower middle portion of the first baffle is connected to a spiral baffle, which extends spirally along the axial direction of the core tube, so as to define the spiral opening extending spirally along the spiral baffle from a lower end face of the first baffle to the shell outlet;
• and
• wherein a lower end of the spiral baffle is connected to a vortex stabilizing stick which extends along the axial direction of the core tube;
• and
• wherein the spiral baffle comprises a first section disposed within the first cylindrical barrel and a second section disposed within the first conical barrel, the first section is arranged on a cylindrical surface, the second section is arranged on a conical surface, and a taper of the conical surface is equal to that of the first conical barrel.