阅读说明：本技术 一种废机油或废液压油回收再利用的处理工艺 (Treatment process for recycling waste engine oil or waste hydraulic oil ) 是由 颜健彬 于 2021-10-21 设计创作，主要内容包括：本发明公开了一种废机油或废液压油回收再利用的处理工艺,包括如下的工艺步骤：(1)脱水处理：将待处理的废油置入液体搅拌机内,将油品充分搅拌10～12小时,使油和水充分分离,待油和水上下分层后,将下层的水排出；(2)脱色处理：向油品中添加过滤砂,在常温下将油品充分搅拌15分钟～20分钟,油品呈现为淡黄色并略带浑浊；(3)沉淀处理：向油品中添加沉降絮凝剂,油品在常温下静置12～14小时,待油品下层呈淡红色,上层呈清澈透明油液,抽取油品上层清液,即得到可以再利用的成品油。本发明的工艺操作简便,环保无污染,所得油品品质优良,利用价值较高,废油处理成本较低。(The invention discloses a treatment process for recycling waste engine oil or waste hydraulic oil, which comprises the following process steps: (1) and (3) dehydration treatment: putting the waste oil to be treated into a liquid stirrer, fully stirring the oil for 10-12 hours to fully separate the oil from the water, and discharging the water on the lower layer after the oil and the water are layered up and down; (2) and (3) decoloring treatment: adding filter sand into the oil product, and fully stirring the oil product for 15-20 minutes at normal temperature to obtain a light yellow oil product with slight turbidity; (3) and (3) precipitation treatment: and adding a settling flocculant into the oil product, standing the oil product at normal temperature for 12-14 hours, and extracting the supernatant of the oil product to obtain the recyclable product oil after the lower layer of the oil product is light red and the upper layer of the oil product is clear and transparent oil. The process of the invention has simple operation, environmental protection and no pollution, and the obtained oil product has good quality, higher utilization value and lower waste oil treatment cost.)

1. A treatment process for recycling waste engine oil or waste hydraulic oil is characterized in that: the method comprises the following process steps:

(1) and (3) dehydration treatment: putting the waste oil to be treated into a liquid stirrer, setting the temperature in the liquid stirrer at 60-80 ℃, fully stirring the oil product for 10-12 hours to fully separate the oil from the water, opening a valve on the liquid stirrer after the oil and the water are layered up and down, and discharging the water on the lower layer to ensure that the water content in the oil product is not more than 0.1%;

(2) carrying out decoloring treatment on the oil product obtained in the step (1): adding filter sand into the oil product in a liquid stirrer, wherein the weight percentage of the filter sand to the oil product is 2:100, fully stirring the oil product for 15-20 minutes at normal temperature, and adsorbing most impurities and pigments in the oil product by using the filter sand to obtain a light yellow oil product which is slightly turbid;

(3) carrying out precipitation treatment on the oil product obtained in the step (2): adding a sedimentation flocculant into an oil product in a liquid stirrer, wherein the weight percentage of the sedimentation flocculant to the oil product is 1:1000, standing the oil product at normal temperature for 12-14 hours to quickly coagulate and sediment residual oil-soluble impurities in the oil product, and extracting supernatant of the oil product when the lower layer of the oil product is light red and the upper layer of the oil product is clear transparent oil to obtain recyclable product oil.

2. The process according to claim 1, wherein the waste oil or the waste hydraulic oil is recycled and reused, and the process comprises the following steps: the sedimentation flocculant is a polyacrylamide flocculant, a sodium polyacrylate flocculant, a polyvinyl pyridinium flocculant or a polyethyleneimine flocculant.

3. The process according to claim 1, wherein the waste oil or the waste hydraulic oil is recycled and reused, and the process comprises the following steps: the filter sand is crystal sand or mineral sand, and the diameter of the sand is 40-80 meshes.

Technical Field

The invention relates to an oil product recovery technology, in particular to a treatment process for recycling waste engine oil or waste hydraulic oil.

Technical Field

The waste oil recovered after the use of the engine oil or the hydraulic oil used on the industrial equipment contains impurities such as metal chips, silt, coking substances and the like, and if the impurities are to be recycled, the impurities are generally removed through special equipment, and then auxiliary agents are added to adjust the lubricating degree of the engine oil so as to meet the operation requirement of the machine. The existing recovery treatment technology of waste engine oil or waste hydraulic oil has complex recovery equipment and treatment process, higher treatment cost, poor quality of treated oil and needs to be improved.

Disclosure of Invention

The invention aims to solve the technical problem of providing a treatment process for recycling waste engine oil or waste hydraulic oil, which has the advantages of simple operation, environmental protection and no pollution, and the obtained oil product has excellent quality, higher utilization value and lower waste oil treatment cost.

In order to solve the technical problems, the technical scheme of the invention is as follows: the treatment process for recycling the waste engine oil or the waste hydraulic oil comprises the following process steps:

(1) and (3) dehydration treatment: putting the waste oil to be treated into a liquid stirrer, setting the temperature in the liquid stirrer at 60-80 ℃, fully stirring the oil product for 10-12 hours to fully separate the oil from the water, opening a valve on the liquid stirrer after the oil and the water are layered up and down, and discharging the water on the lower layer to ensure that the water content in the oil product is not more than 0.1%;

(2) carrying out decoloring treatment on the oil product obtained in the step (1): adding filter sand into the oil product in a liquid stirrer, wherein the weight percentage of the filter sand to the oil product is 2:100, fully stirring the oil product for 15-20 minutes at normal temperature, and adsorbing most impurities and pigments in the oil product by using the filter sand to obtain a light yellow oil product which is slightly turbid;

(3) carrying out precipitation treatment on the oil product obtained in the step (2): adding a sedimentation flocculant into an oil product in a liquid stirrer, wherein the weight percentage of the sedimentation flocculant to the oil product is 1:1000, standing the oil product at normal temperature for 12-14 hours to quickly coagulate and sediment residual oil-soluble impurities in the oil product, and extracting supernatant of the oil product when the lower layer of the oil product is light red and the upper layer of the oil product is clear transparent oil to obtain recyclable product oil.

According to the treatment process for recycling the waste engine oil or the waste hydraulic oil, the sedimentation flocculant is a polyacrylamide flocculant, a sodium polyacrylate flocculant, a polyvinyl pyridinium flocculant or a polyethyleneimine flocculant.

According to the treatment process for recycling the waste engine oil or the waste hydraulic oil, the filter sand is crystal sand or mineral sand, and the diameter of the sand is 40-80 meshes.

The invention has the beneficial technical effects that: the method has the advantages of simple process, simple and convenient operation, no pungent smell in the treatment process, environmental protection and no pollution, cleaner treatment of impurities and pigments in the waste oil, excellent quality of the obtained oil product, higher utilization value, no need of special filtering equipment due to the fact that the waste oil is only treated by a common liquid stirring machine, and lower waste oil treatment cost.

Detailed Description

The treatment process for recycling the waste engine oil or the waste hydraulic oil comprises the following process steps:

(1) and (3) dehydration treatment: putting 100KG of waste oil to be treated into a liquid stirrer, setting the temperature in the liquid stirrer at 60 ℃, fully stirring the oil for 10-12 hours to fully separate the oil from the water, observing through a transparent liquid column on the liquid stirrer, layering the oil and the water, opening a valve on the liquid stirrer, and discharging the water on the lower layer to ensure that the water content in the oil is not more than 0.1%;

(2) carrying out decoloring treatment on the oil product obtained in the step (1): adding filter sand into an oil product in a liquid stirrer, wherein the filter sand is specifically crystal sand, namely silica gel filter sand, and adsorbing impurities and pigments in waste oil by utilizing the principle of a large number of nanoscale molecular structures contained in the structure of silica gel (in actual treatment, the filter sand can also adopt mineral sand, and the components of the filter sand are attapulgite clay and montmorillonite clay), wherein the weight of the filter sand is 2KG, the diameter of the sand is 40-80 meshes, the oil product is fully stirred for 15-20 minutes at normal temperature, and after most of impurities and pigments in the oil product are adsorbed by the filter sand, the oil product is light yellow and slightly turbid;

(3) carrying out precipitation treatment on the oil product obtained in the step (2): adding a sedimentation flocculating agent into an oil product in a liquid mixer, wherein the sedimentation flocculating agent is a polyacrylamide flocculating agent, or adopting a sodium polyacrylate flocculating agent, a polyvinyl pyridinium flocculating agent and a polyethyleneimine flocculating agent, the weight of the added sedimentation flocculating agent is 0.1KG, standing the oil product at normal temperature for 12-14 hours to quickly coagulate and sediment residual oil-soluble impurities in the oil product, observing through a transparent liquid column on the liquid mixer, and extracting the supernatant of the oil product to obtain the recyclable product oil when the lower layer of the oil product is light red and the upper layer of the oil product is clear transparent oil.

The treatment process has the advantages of simple process, simple and convenient operation, no pungent smell in the treatment process, environmental protection and no pollution, the impurities and pigments in the waste oil are filtered and adsorbed, the treatment is cleaner, the obtained oil product has good quality and higher utilization value, in addition, the treatment is only carried out by a common liquid stirring machine, no special filtering equipment is needed, and the waste oil treatment cost is lower.

The above embodiments are preferred embodiments of the present invention, and all similar processes and equivalent variations to those of the present invention should fall within the scope of the present invention.