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Method for regenerating waste rolling oil

A rolling oil and oil technology, which is used in the recycling and reuse of waste rolling oil and the field of regeneration of waste rolling oil, can solve the problems of secondary pollution, achieve high recovery rate, abandon secondary pollution, and avoid secondary pollution. The effect of pollution

Inactive Publication Date: 2016-07-13
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a method for regenerating waste rolling oil, which can solve the secondary pollution problem of the traditional waste rolling oil regeneration process, reduce operating costs, improve the recovery rate, and abandon Traditional regeneration processes such as sulfuric acid-clay can not only reduce secondary pollution, but also effectively regenerate waste oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for regenerating waste rolling oil, comprising the following steps:

[0024] (1) Flocculation of waste rolling oil

[0025] Add 1% polyacrylamide solution, 20% sodium hydroxide solution, 1% polydimethyldiallylammonium chloride solution, and polyacrylamide solution to the waste rolling oil in sequence. , sodium hydroxide solution, polydimethyldiallylammonium chloride solution and the mass ratio of waste rolling oil are 1:1:1:14; then it is put into an oil bath and heated and stirred, and the heating temperature at 40°C, and the stirring time was 20 minutes; finally, put it into a centrifuge for centrifugation at a speed of 8000 r / min, and the centrifugation time was 5 minutes, to obtain the upper layer of oil.

[0026] (2) Silica gel modification

[0027] ①Put 100-200 mesh silica gel into a tube furnace, feed nitrogen, raise the temperature to 600°C, and roast for 4 hours to obtain silica gel modified by high-temperature roasting.

[0028] ② Vacuum-dry 100-20...

Embodiment 2

[0036] A method for regenerating waste rolling oil, comprising the following steps:

[0037] (1) Flocculation of waste rolling oil

[0038] Add 1% polyacrylamide solution, 20% sodium hydroxide solution, 1% polydimethyldiallylammonium chloride solution, and polyacrylamide solution to the waste rolling oil in sequence. , sodium hydroxide solution, polydimethyldiallylammonium chloride solution and the mass ratio of waste rolling oil are 1:1:1:14; then it is put into an oil bath and heated and stirred, and the heating temperature at 40°C, and the stirring time was 20 minutes; finally, put it into a centrifuge for centrifugation at a speed of 8000 r / min, and the centrifugation time was 5 minutes, to obtain the upper layer of oil.

[0039] (2) Silica gel modification

[0040] ①Put 200-300 mesh silica gel into the tube furnace respectively, pass in nitrogen, raise the temperature to 600°C, and roast for 4 hours at 600°C to obtain silica gel modified by high-temperature roasting met...

Embodiment 3

[0049] A method for regenerating waste rolling oil, comprising the following steps:

[0050] (1) Flocculation of waste rolling oil

[0051] Add 1% polyacrylamide solution, 20% sodium hydroxide solution, 1% polydimethyldiallylammonium chloride solution, and polyacrylamide solution to the waste rolling oil in sequence. The mass ratio of sodium hydroxide or potassium hydroxide solution, polydimethyldiallyl ammonium chloride solution and waste rolling oil is 1:1:1:14; then it is put into an oil bath for heating and Stir, the heating temperature is 40°C, and the stirring time is 20 minutes; finally put it into a centrifuge for centrifugation, the speed is 8000r / min, and the centrifugation time is 5 minutes to obtain the upper layer oil.

[0052] (2) Silica gel modification

[0053] ① Put 300-400 mesh silica gel into the tube furnace respectively, feed nitrogen, raise the temperature to 600°C, and roast for 4 hours at 500°C to obtain silica gel modified by high-temperature roastin...

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Abstract

The invention belongs to the technical field of petroleum energy resources, and particularly relates to a method for regenerating waste rolling oil.The method comprises the following steps that firstly, the waste rolling oil is pretreated, a polyacrylamide solution, an alkali solution and a poly(diallyldimethylammonium chloride) solution are sequentially added into the waste rolling oil, stirring under heating and centrifugal separating are sequentially performed, and supernatant oil liquid is obtained; meanwhile, silica gel is modified through high-temperature roasting and a method of doping metal elements; lastly, column chromatography is performed on the supernatant oil liquid through the modified silica gel, wherein the supernatant oil liquid is poured into an assembled chromatographic column, the oil acceleratedly passes through the chromatographic column through a vacuum pump, and then regenerated base oil is obtained.The method has the advantages of being easy to operate, low in energy consumption, free of pollution, clean, environmentally friendly, high in recovery rate and the like, and secondary pollution caused by a traditional process technology is thoroughly abandoned; by adopting the method to treat the waste rolling oil, the physical and chemical properties and the using property of the waste oil can be effectively recovered, and the good social benefit and economic benefit are achieved.

Description

[technical field] [0001] The invention relates to the recovery and reuse of waste rolling oil, and belongs to the technical field of petroleum energy, in particular to a method for regenerating waste rolling oil. [Background technique] [0002] Waste rolling oil is the impurity-containing and invalid rolling oil replaced during the rolling process. In recent years, with the rapid development of my country's metallurgical industry, rolling oil has been widely used in the metallurgical rolling process, so the production of waste rolling oil is also increasing. Many factories burn waste rolling oil directly as fuel, and the combustion process will emit a large amount of toxic substances into the air. Using this method to treat waste rolling oil will pollute the environment and waste resources. In today's increasingly scarce oil resources, the recovery and regeneration of waste rolling oil has attracted more and more attention. [0003] Waste rolling oil contains metal particl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00
CPCC10M175/0016C10M175/0008
Inventor 韩生周嘉伟马鹏刘平薛原许广文赵志成陈红艳常兴李勇韩治亚陈达明兰国贤
Owner SHANGHAI INST OF TECH
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