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Treatment method for steel rolling waste oil

A treatment method and technology for waste oil, applied in workpiece surface treatment equipment, metal rolling, metal rolling, etc., can solve the problems of waste oil not being used for regeneration, secondary pollution, etc., to achieve efficient utilization and solve secondary pollution. The effect of pollution

Inactive Publication Date: 2019-01-15
泰安市国士环保科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the common problems in the existing steel rolling waste oil treatment technology that easily lead to secondary pollution and the waste oil cannot be recycled after treatment, this application proposes a new method for the treatment of steel rolling waste oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The waste steel rolling oil can be sucked up by magnet detection, and 1mol / l sulfuric acid solution is added at 20°C. The waste oil reacts violently and the room is filled with acid salt spray, which triggers the dark witch alarm and the experiment is terminated.

Embodiment 2

[0019] (1) Add PH=7 potassium-hydroxyethylidene diphosphonic acid 3 mol / l, orthophosphoric acid 0.2 mol / l, phytic acid 0.5 mol / l mixed acid at 20°C to waste steel rolling oil, without any salt spray ;

[0020] (2) After standing still for 14 days, the solution and the waste oil did not change in any way, and fixed stratification still occurred, with the waste oil at the bottom and the solution at the top.

Embodiment 3

[0022] (1) Add the waste steel rolling oil at 20°C to a mixed acid composed of 3 mol / l orthophosphoric acid and 0.5 mol / l phytic acid, without any salt spray;

[0023] (2) After standing still for 14 days, the solution and the waste oil did not change in any way, and fixed stratification still occurred, with the waste oil at the bottom and the solution at the top.

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PUM

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Abstract

The invention provides a treatment method for steel rolling waste oil. The method includes the following steps that: (1) a treatment liquid is added to waste oil, so that the treatment liquid can react with the waste oil until detection standards are satisfied, wherein the treatment liquid is a mixed acid; and (2) a reaction liquid in the step (1) is detected, if the pH value of the reaction liquid is less than 6.5, alkaline powder is added into the reaction liquid, so that the pH of the reaction liquid is adjusted to 7. With the method of the invention adopted, re-treatment devices such as adevice for additional distillation are not required; after the treating agent slowly reacts with the waste oil, and then the waste oil and impurities such as metal are converted into a water-soluble solution, and no waste smoke, waste residues, exhaust gas and odor are generated in a treatment process.

Description

technical field [0001] The invention relates to the treatment technology of steel rolling waste oil, in particular to the environmental protection treatment and reuse technology of the three steel rolling wastes. Background technique [0002] During the heating and rolling process of steel billet (steel ingot), hydraulic oil, gear lubricating oil, mechanical lubricating oil, etc. will gradually age and deteriorate due to high temperature and air oxidation during use, and the metal that is worn off by friction parts Moisture in the oil caused by powder, respiration and other reasons, and impurities intruded from the environment not only pollute the oil, but also promote the oxidation of various rolling oils, thereby continuously producing waste rolling oil. Moreover, with the development of the country and the upgrading of the steel industry, waste oil has also increased accordingly. The Chinese industry used to use methods such as soil backfilling and road oiling, but the M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02
CPCB21B45/0296
Inventor 高峰苏克敏周传恩孙丰伟高奇辉高裕林
Owner 泰安市国士环保科技有限公司
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