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Method for treating copper drawing waste fluid with hydrothermal process

A copper wire drawing liquid, hydrothermal technology, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of high treatment cost, large dosage of chemicals, environmental pollution and so on , to achieve the effect of high processing efficiency, simple steps and strong operability

Active Publication Date: 2018-05-18
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the serious environmental pollution caused by the copper wire drawing liquid waste liquid in the prior art, the existing treatment technology steps are relatively cumbersome, the dosage of chemicals is large, the treatment cost is high, and the composition of the liquid after treatment has changed significantly compared with the original copper wire drawing liquid. Large changes, the problem that it cannot be recycled and reused, the invention provides a method for treating waste liquid of copper wire drawing liquid by hydrothermal method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the processing recycling method of copper wire drawing liquid waste liquid

[0034] Step (1) heat preservation

[0035] Take 100L of copper wire drawing liquid waste liquid, put it into the hydrothermal reaction kettle, and then add 4g of benzotriazole. The hydrothermal reaction kettle used requires better thermal insulation and sealing performance. First turn on the heating power of the heat conduction oil tank, adjust the temperature and set the temperature to 130°C. After the temperature is constant, the pressure inside the hydrothermal reactor is about 0.27MPa, start the circulation pump, and pass the heat conduction oil into the jacket layer of the hydrothermal reactor. Inject the heating medium into the heating jacket of the hydrothermal reaction kettle, control the heating temperature to maintain 130°C, and keep the heat preservation reaction time for 6 hours; turn off the heat conduction oil heating and the circulation pump power supply, and open t...

Embodiment 2

[0044] Embodiment 2: the processing recycling method of copper wire drawing liquid waste liquid

[0045] Step (1) heat preservation

[0046] Take 100L of copper wire drawing liquid waste liquid, put it into the hydrothermal reaction kettle, and then add 4.5g of tolyltriazole. The hydrothermal reaction kettle used requires better thermal insulation and sealing performance. First turn on the heating power of the heat conduction oil tank, adjust the temperature and set the temperature to 140°C. After the temperature is constant, the pressure inside the hydrothermal reactor is about 0.36MPa, start the circulation pump, and pass the heat conduction oil into the jacket layer of the hydrothermal reactor. Inject the heating medium into the heating jacket of the hydrothermal reaction kettle, control the heating temperature to maintain 140°C, and keep the heat preservation reaction time for 5 hours; turn off the power supply of the heat transfer oil heating and circulation pump, and ope...

Embodiment 3

[0054] Embodiment 3: the processing recycling method of copper wire drawing liquid waste liquid

[0055] Step (1) heat preservation

[0056] Take 100L of copper wire drawing liquid waste liquid, put it into the hydrothermal reaction kettle, and then add 4.5g of tolyltriazole. The hydrothermal reaction kettle used requires better thermal insulation and sealing performance. First turn on the heating power of the heat conduction oil tank, adjust the temperature and set the temperature to 150°C, after the temperature is constant, the pressure inside the hydrothermal reactor is about 0.47MPa, start the circulation pump, and pass the heat conduction oil into the jacket layer of the hydrothermal reactor, Inject the heating medium into the heating jacket of the hydrothermal reaction kettle, control the heating temperature at 150°C, and keep the heat preservation reaction time for 4 hours; turn off the heat conduction oil heating and the circulation pump power supply, and open the disc...

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Abstract

The invention particularly relates to a method for treating a copper drawing waste fluid with a hydrothermal process. The method comprises following steps: step (1) heating and thermal insulation: thecopper drawing waste fluid is taken and added to a hydrothermal reaction kettle, a copper corrosion inhibitor is added, a thermal insulation sealed reaction is performed, the heating temperature is controlled at 80-200 DEG C, and the thermal insulation reaction time is 1-10 h; step (2) copper removal: the copper drawing waste fluid subjected to thermal insulation treatment is transferred to a centrifugal separator, centrifugal separation is performed on liquid and solid phases, and a liquid phase is obtained; step (3) measurement of oil phase content; step (4) adjustment and recycling: a proper oil phase or water phase is supplemented, so that the mass percentage of the oil phase in the copper drawing waste fluid without copper is adjusted to the required concentration, and then, the copper corrosion inhibitor is supplemented. By means of the method for treating the copper drawing waste fluid with the hydrothermal process, 95% or above of copper ions can be removed, the treatment efficiency is high, zero emission and recycling are realized, the process is simple, the operability is high, and the method is suitable for large-scale popularization and application and has great significance in environmental protection.

Description

technical field [0001] The invention belongs to the technical field of industrial waste liquid treatment, and in particular relates to a method for treating copper wire drawing liquid waste liquid by a hydrothermal method. Background technique [0002] Wire drawing fluid, whose basic components include oil, water and various chemical additives, is mainly used in the metal wire and cable industry, such as copper and aluminum wire drawing process, to play the role of lubrication, cooling, cleaning, rust prevention, etc., by adjusting the wire drawing The mixing ratio of oil and tap water or soft water is suitable for drawing copper wires and aluminum wires of different specifications such as large drawing, medium drawing, small drawing and micro drawing. In general, the drawing liquid: the concentration of large drawing is 8-10%, the concentration of medium drawing is 5-7%, and the concentration of small drawing is 2.5-3.5%. The wire drawing fluid used in the machining proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/02C10M133/44C02F9/10C02F101/20C10N40/24
CPCC02F1/025C02F1/38C02F2101/20C02F2303/08C10M133/44C10M175/02C10N2040/24
Inventor 崔斌李卓陆奕霖李恒欣田忠马晓迅
Owner NORTHWEST UNIV(CN)
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