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Fluidized bed electrode reactor

An electrode reactor and fluidized bed technology, which is applied in the field of new fluidized bed electrode reactors, can solve the problems of high concentration, difficult to remove impurities, and inability to enter the field of hydrometallurgy, and achieves simple structure, operating cost and energy efficiency. consumption reduction effect

Active Publication Date: 2014-05-14
唐山瑞能再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the variety of impurity ions in these solutions, the concentration of main metal ions and impurity ions is too high, resulting in the difference between the actual decomposition voltage is far smaller than the theoretical value, it is difficult for the traditional plate electrode to be used in the field of hydrometallurgy for impurity removal. , and the traditional fluidized electrode cannot enter the field of hydrometallurgy due to the above shortcomings

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] To treat copper-containing electroplating wastewater, the concentration of copper ions is 4.2mg / L.

[0030]The size of the reactor bed is 30cm×10cm×15cm long×width×height. The effective working area of ​​the cathode plate is 10cm×7cm, the effective working area of ​​the anode plate is 10cm×5cm, the thickness of the cathode and anode plates is 2cm, and the distance between the cathode and anode surfaces is 4cm. A total of 3 anodes and 2 cathodes are connected to the DC converter in parallel. A fluidized air duct with a length of 7 cm and D of 2.5 cm is arranged parallel to the plate at 1 cm below each plate. The 5 air pipes are connected with the main air pipe, and the main air pipe is connected with the fan. The solution volume is 3L, and the fluidized volume is 15L / min. The electrolysis voltage is 2.8V, and the solution temperature is 50 degrees.

[0031] Implementation results: after electrolysis for 90 minutes, the concentration of copper ions was reduced to 0.05 ...

Embodiment 2

[0033] Zinc ammonia complex solution purification to remove lead, copper, cadmium, Zn 2+ : 48.01g / L, Pb 2+ : 0.86g / L, Cu 2+ : 1.86g / L, Cd 2+ : 3.9g / L.

[0034] The size of the reactor bed is 30cm×10cm×15cm long×width×height. The effective working area of ​​the cathode plate is 10cm×7cm, the effective working area of ​​the anode plate is 10cm×6cm, the thickness of the cathode and anode plates is 2cm, and the distance between the cathode and anode surfaces is 4cm. A total of 3 anodes and 2 cathodes are connected to the DC converter in parallel. A fluidized air duct with a length of 7 cm and D of 2.5 cm is arranged parallel to the plate at 1 cm below each plate, and the 5 air pipes are connected with the main air pipe, and the main air pipe is connected with the fan. The solution volume is 3L, and the fluidized volume is 20L / min. The electrolysis voltage is 2.1V, and the solution temperature is 75 degrees.

[0035] Implementation results: after 120 minutes of electrolysis,...

Embodiment 3

[0037] To treat silver-containing chlorine-containing wastewater, the concentration of silver ions is 1.1 mg / L, and the concentration of chloride ions is 0.1 mol / L.

[0038] The size of the reactor bed is 30cm×10cm×15cm long×width×height. The effective working area of ​​the cathode plate is 10cm×7cm, the effective working area of ​​the anode plate is 10cm×3cm, the thickness of the cathode and anode plates is 2cm, and the distance between the cathode and anode surfaces is 4cm. A total of 3 anodes and 2 cathodes are connected to the DC converter in parallel. A fluidized air duct with a length of 7 cm and D of 2.5 cm is arranged parallel to the plate at 1 cm below each plate, and the 5 air pipes are connected with the main air pipe, and the main air pipe is connected with the fan. The solution volume is 3L, and the fluidized volume is 40L / min. The electrolysis voltage is 3.5V, and the solution temperature is 45 degrees.

[0039] Implementation results: after electrolysis for 1...

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Abstract

The invention provides a novel fluidized bed electrode reactor which comprises a reactor bed body, cathode and anode boards and fluidization air tubes, wherein the reactor bed body is divided into a reaction area and a powder collection area; the cathode and anode boards are positioned in the reaction area; the fluidization air tubes are uniformly distributed below each cathode and anode board; the fluidization air tubes are connected with one main air tube; and the main air tube is connected with a fan outside the reaction area. The fluidized bed electrode reactor is simple in equipment manufacturing, no conductive granules and conductive granules which are used for treating deposited metal need to be added into a solution, the solution is good in fluidization state, the current efficiency is high, and the operation cost is low; the equipment can be applied to purification of low-concentration metal wastewater, or purification for eliminating impurity ions which have more positive electrical property than that of the main metal in the solution in a colored metallurgy process.

Description

technical field [0001] The invention relates to a novel fluidized bed electrode reactor, which is used to treat industrial wastewater containing low concentration metal ions, and can also purify and remove impurity ions in the solution that are more positive than the main metal in the hydrometallurgical process, which belongs to electrochemical In the field of industrial wastewater treatment or in the field of purification of hydrometallurgical solutions. Background technique [0002] Industrial production, especially metallurgy, precious metal processing, tanning, electroplating and other fields, usually contains a variety of metal ions, such as copper, lead, cobalt, nickel, zinc, cadmium, gold, silver, arsenic, etc. Even if the content of these ions in wastewater is very low, they are extremely harmful to the environment, and they must be strictly purified before they can be discharged. At present, the treatment methods of industrial wastewater generally include physical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C25C7/00
Inventor 魏清松
Owner 唐山瑞能再生资源有限公司