阅读说明：本技术 一种废铝拉丝油的处理方法 (Treatment method of waste aluminum wire drawing oil ) 是由 蒋陆肆 于 2019-10-23 设计创作，主要内容包括：本发明公开了一种电线电缆行业废铝拉丝油的处理方法,包括废铝拉丝油的加热沉淀,油的回收利用,沉淀后油泥的无污染化学处理方法,用该方法处理一吨拉丝油的费用约150元,且基本没有污染物产生,电线电缆厂家可自行就地处理,节约大量处理费用,免去装车和运输途中可能造成的环境和道路污染,本发明方法处理过程成本低、简单,安全,可靠,无污染物产生。(The invention discloses a method for treating waste aluminum drawing oil in the wire and cable industry, which comprises the steps of heating and precipitating the waste aluminum drawing oil, recycling the oil, and carrying out pollution-free chemical treatment on precipitated oil sludge, wherein the cost for treating one ton of drawing oil by using the method is about 150 yuan, and basically no pollutants are generated, a wire and cable manufacturer can carry out self-on-site treatment, a large amount of treatment cost is saved, and the environmental and road pollution possibly caused in the processes of loading and transportation is avoided.)

1. A method for treating waste aluminum wire drawing oil is characterized by comprising the following steps: the method comprises the following steps:

(1) collecting the waste wire drawing oil into a treatment oil pool with a steel structure which is large enough, wherein the liquid level of the oil is about 1/5 of the depth of the oil pool;

(2) heating the oil in the oil pool to 60-65 ℃, stirring for 10-15min to enable the wire drawing oil to enter a standing state, heating for 2h to enable the oil to be heated to 118-122 ℃, keeping the temperature for 1.5h, and then standing until the temperature is cooled to room temperature for at least 8 h;

(3) firstly, discharging and separating the wiredrawing oil separated out of the surface, adding tap water with the volume of 2-2.5 times that of the precipitated wiredrawing oil sludge, and stirring for 5min to fully and uniformly mix the water and the precipitated oil sludge;

(4) and adding sodium hydroxide into the mixture of the oil sludge and the water to enable the mixture to be in an alkaline environment, and stirring the mixture to enable the mixture to continuously react for 1 to 2 hours.

Technical Field

The invention relates to the technical field of waste oil stain treatment, in particular to a method for treating waste aluminum wire drawing oil.

Background

The aluminum consumption of the wire and cable industry reaches millions of tons every year, the wire and cable is mainly used for manufacturing conductor materials of wires and cables, when the wire and cable is used, an aluminum rod with the diameter of about phi 9.5mm is drawn into a monofilament with the diameter ranging from phi 1mm to phi 5mm through a die, and aluminum drawing oil is used for overmoulding lubrication in the whole wire drawing process. The main component of the drawing oil is hydrocarbon, and after a certain amount of aluminum monofilaments are drawn, a large amount of fine aluminum components are mixed in the drawing oil, so that the drawing oil gradually becomes viscous, cannot be used continuously after losing fluidity, and needs to be replaced by new oil.

The waste wire drawing oil is a viscous state industrial waste, can be sold as low-value industrial fuel oil to enterprises with fuel requirements in the past as fuel, can generate a large amount of black smoke and harmful gas when being combusted, and has a long-term technical problem that the electric wire and cable manufacturers are troubled by how to treat the waste wire drawing oil along with the national improvement of the emission requirements and the enhancement of the supervision of environmental protection and industrial waste gas. At present, in order to meet the requirement of environmental protection, the waste wire drawing oil is purchased and treated by enterprises with environmental protection quality, the treatment cost is increased year by year, the cost for treating one ton of waste wire drawing oil is more than 6000 yuan at present, and the price is more than 2 times of the price for purchasing brand new wire drawing oil.

Disclosure of Invention

The invention aims to provide a method for treating waste aluminum wire drawing oil, which has the advantages of low treatment cost, environmental protection, simplicity and practicability.

In order to achieve the purpose, the invention adopts the technical scheme that: a method for treating waste aluminum wire drawing oil comprises the following steps:

(1) collecting the waste wire drawing oil into a treatment oil pool with a steel structure which is large enough, wherein the liquid level of the oil is about 1/5 of the depth of the oil pool;

(2) heating the oil in the oil pool to 60-65 ℃, stirring for 10-15min to enable the wire drawing oil to enter a standing state, heating for 2h to enable the oil to be heated to 118-122 ℃, keeping the temperature for 1.5h, and then standing until the temperature is cooled to room temperature for at least 8 h; the process mainly makes the aluminum powder in the waste drawing oil fully precipitate and the oil floats to the surface.

(3) Firstly, discharging and separating the wiredrawing oil separated out of the surface, adding tap water with the volume of 2 times that of the precipitated wiredrawing oil sludge, and stirring for 5min to fully and uniformly mix the water and the precipitated oil sludge; in the application, the separated drawing oil can be returned to the drawing machine for reuse;

(4) and adding sodium hydroxide into the mixture of the oil sludge and the water to enable the mixture to be in an alkaline environment, and stirring the mixture to enable the mixture to continuously react for 1 to 2 hours. .

In the present application, sodium hydroxide is added to the mixture to initiate and produce a chemical reaction that conforms to the following aluminum water reaction equation:

2Al+6H₂O＝2Al(OH)₃↓+3H₂↑

Al(OH)₃+NaOH＝NaAlO₂+2H₂O。

in the method, the temperature of the mixture is continuously raised and is in a boiling state for a short time while stirring, a large amount of water vapor is generated, the mixture of solid sodium metaaluminate with fine particles as main components and a small amount of aluminum hydroxide is evaporated until the reaction is finished, and the mixture has various industrial applications.

The beneficial technical effects of the invention are as follows: the invention discloses a method for treating waste aluminum drawing oil in the wire and cable industry, which comprises the steps of heating and precipitating the waste aluminum drawing oil, recycling the oil, and carrying out pollution-free chemical treatment on precipitated oil sludge, wherein the cost for treating one ton of drawing oil by using the method is about 150 yuan, a large amount of water vapor is mainly generated in the treatment process, no pollutant is generated basically, a wire and cable manufacturer can carry out on-site treatment by self, a large amount of treatment cost is saved, and the environmental and road pollution possibly caused in the process of loading and transportation is avoided. The method has the advantages of low cost, simplicity, safety, reliability and no pollutant generation in the treatment process.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.