Method for removing carbon black and high polymer in preparation of acetylene by cracking natural gas with plasma

The invention discloses a method for removing carbon black and high polymer in the preparation of acetylene by cracking natural gas with plasma. The method comprises the following steps: 1) the cracked gas from a gas generating process enters a hot water washing tower from a bottom charge end, performs the spray washing of hot water with the temperature of 60-130 DEG C and the absorption of porous packing and is discharged from a discharge end on the top of the hot water washing tower; 2) the gas leaving the hot water washing tower enters a single-stage electrostatic precipitator to perform single-stage electrostatic precipitation treatment; and 3) the treated gas enters a washing tower from a bottom charge end, performs the spray cooling of water with the temperature of 20-40 DEG C and enters a gas holder for the post-treatment. By using the method, the carbon black and high polymer in the raw acetylene feed gas can be removed more thoroughly, the technological requirement of the preparation of acetylene by