Oxidation equipment for production of trimellitic anhydride

The utility model relates to chemical production equipment, in particular to oxidation equipment for trimellitic anhydride production, which comprises an oxidation tower and a gas pipeline, the tail end of the gas pipeline is connected with an air distributor, the air distributor comprises a main pipe connected with the gas pipeline, the peripheral side of the main pipe is connected with branch pipes, and the branch pipes are distributed in an annular array; the air distributor is accommodated in the guide cylinder; the guide cylinder is of a structure with two thick ends and a thin middle part; and the upper port of the guide cylinder is positioned below the liquid level in the oxidation tower. The guide cylinder is thin in the middle and thick at the two ends, after air enters the guide cylinder, low pressure is generated at the middle position, the low pressure can pull fluid on the upstream of the guide cylinder to be mixed with the entering air, the fluid and the entering air are sprayed out of the guide