Waste acid reduction pneumatic mixing device

A pneumatic mixing and mixing tube technology, applied in chemical/physical processes, chemical instruments and methods, etc., can solve the problems of high cost of waste acid treatment, difficulty in mixing fully, large consumption of iron powder, etc., and achieve saving and reduction The effect of cost, safe and convenient use, and simple main structure

CN108479646AInactive Publication Date: 2018-09-04QINGDAO TECHNOLOGICAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-09-04
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment 1

[0014] The main structure of the waste acid reduction pneumatic mixing device involved in this embodiment includes: air compressor 1, air pipeline 2, mixing pipe 3, baffle plate 4, inclined plate 5, iron powder 6, feed inlet 7, outlet valve 8 and Reaction tank 9; inclined plates 5 are arranged around the bottom of the reaction tank 9 to form an inverted cone structure at the bottom of the reaction tank 9, and the bottom of the reaction tank 9 is filled with iron powder 6 for reducing waste acid. The powder 6 concentrates and settles in the middle of the reaction tank 9 under the guidance of the inclined surface of the inclined plate 5. A vertically placed mixing tube 3 is arranged directly above the middle of the reaction tank 9, and one end of the air pipe 2 for transporting air extends to The bottom end of the mixing tube 3 and the other end are connected to the air compressor 1, and the air generated by the air compressor 1 is transported to the bottom of the reaction tank 9...