Safety interlocking protection device of waste acid treatment system

The invention discloses a safety interlocking protection device of a waste acid treatment system, and relates to the technical field of waste acid treatment.The safety interlocking protection device is characterized in that a pressure sensor is installed on a concentration device, the pressure in the concentration device is detected in real time, and when the pressure in the concentration device exceeds a preset value, high-temperature steam is stopped from being provided for the waste acid treatment system, and a three-way valve is switched; through the arrangement of the pneumatic three-way valve, gas in the waste acid treatment system passes through the pneumatic three-way valve, is absorbed by low-pressure steam and then flows to the waste water collection pool, so that overhigh pressure in the concentration device is avoided, the problem that concentration equipment is possibly damaged due to overhigh pressure in the prior art is solved, and the concentration device is suitable for waste acid treatment.