Waste acid reduction pneumatic mixing device

Abstract

The invention belongs to the technical field of dangerous waste treatment, and specifically relates to a waste acid reduction pneumatic mixing device. The waste acid reduction pneumatic mixing deviceis characterized in that a main body structure comprises an air compressor, an air pipeline, a mixing pipe, a baffle plate, sloping plates, iron powder, a material inlet, an outlet valve and a reaction tank, wherein the sloping plates are arranged around the bottom part of the reaction tank; the iron powder for reducing waste acid is contained in the bottom part of the reaction tank; the iron powder is concentrated and precipitated to the middle position of the reaction tank under the guiding of the sloping surfaces of the sloping plates; the mixing pipe which is vertically arranged is arranged right above the middle part of the reaction tank. Air generated by the air compressor can be conveyed to the bottom part of the reaction tank through the air pipeline, the waste acid can be blown, the waste acid drives the iron powder to enter the mixing pipe, and the iron powder and the waste acid can be seriously and fully mixed for reacting under the action of airflow agitation during an ascending process in the mixing pipe; the main body structure is simple, the design conception is ingenious, the use is safe and convenient, the application environment is environment-friendly, and a market prospect is wide.

Description

Technical field: [0001] The invention belongs to the technical field of hazardous waste treatment, and specifically relates to a pneumatic mixing device for waste acid reduction, which uses an air compressor to deliver air to a reduction pool to drive iron powder at the bottom of the pool to fully contact with waste acid and perform a reduction reaction. Background technique: [0002] With the continuous advancement of the industrialization process, more and more waste acids are generated in the chemical industry. During the production of titanium dioxide, steel pickling and gas drying, these waste acids contain certain concentrations of heavy metal pollutants. In the waste acid heavy metal purification process, the iron powder reduction method is commonly used in the heavy metal purification process. The heavy metal purification process The mechanism is that the iron powder and the heavy metal ions in the waste acid undergo a redox reaction, and the heavy metal is precipita...

AI Technical Summary

Problems solved by technology

In actual engineering, the full mixing and contact of iron powder and waste acid determines the efficiency of redox reaction and the utilization rate of iron powder. However, iron powder has a large proportion and is easy to deposit at the bottom corners, so it is difficult to stir and mix fully. Based on the above The reason is that in the prior art, the reduction of waste acid by iron powder still has the defects of low reaction efficiency, long reaction time, and large consumption of iron powder, resulting in the high cost of waste acid treatment.

Images