Method for preparing fuel oil by taking waste lubricating oil as raw material

A technology for waste lubricating oil and fuel oil, which is applied in the direction of lubricating compositions, petroleum industry, and hydrocarbon oil treatment, and can solve problems such as ecological environment damage, waste oil regeneration and use confusion, waste oil regeneration process backwardness, etc. pollution effect

Inactive Publication Date: 2014-04-30
JINAN DEV ZONE XINGHUO SCI & TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology helps create clean-fused liquid fuels by performing several steps before being used for combustion engines or other applications. By doing this process with specific techniques like multi-distilled water separation (MWD), high pressure hydrocracking, and catalysts, it can produce more pure oils while reducing environmental concerns associated therewith. Additionally, these processes allow usable spent lubricant from previous uses to be recovered after use without harmful chemical residue left behind on our soil.

Problems solved by technology

This technical problem addressed in this patents relates to improving the efficiency and effectiveness of cleanup or reuse of waste grease (oil). Current methods involve expensive equipment and complex procedures involving multiple steps, leading to increased risk of contamination and negative impact upon both human health and natural environments. Additionally, current techniques require long periods before they return their effects, making them less practical options compared to alternative sources like coal reserves.

Method used

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  • Method for preparing fuel oil by taking waste lubricating oil as raw material

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Experimental program
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Effect test

Embodiment 1

[0038] Distill the waste lubricating oil, collect the fraction between 300-500°C, and measure the density of the oil according to the national standard GB / T1884T2000 at 0.83-0.89g / cm 3 , the viscosity is measured according to the national standard GB / T2651998 between 2-11Mpa·s. Control the obtained fraction: water: the mass ratio of concentrated sulfuric acid is 60:35:5, stir and mix it well to form a mixed solution, heat the mixture to 60°C while stirring, and add sodium hydroxide to neutralize to pH 7 , stand still for 60 minutes to form an oil-water separation layer, the bottom is a waste water slag layer, and the upper part is a fuel oil layer. After removing the waste water slag layer at the bottom, the upper part is the recovery of fuel oil products.

[0039] The prepared fuel oil product is further distilled, and the fractions between 300-400°C are collected, and the fractions in this temperature range are added to the hydrofinishing catalyst reactor equipped with hi

Embodiment 2

[0041] Distill the waste lubricating oil, collect the fraction between 300-500°C, and measure the density of the oil according to the national standard GB / T1884T2000 at 0.83-0.89g / cm 3 , the viscosity is measured according to the national standard GB / T2651998 between 2-11Mpa·s. Control the obtained fraction: water: the mass ratio of concentrated sulfuric acid is 65:31:4, stir and mix it well to form a mixed solution, heat the mixture to 70°C while stirring, and add sodium hydroxide to neutralize to pH 7 , stand still for 70 minutes to form an oil and water separation layer, the bottom is a waste water slag layer, and the upper part is a fuel oil layer. After removing the waste water slag layer at the bottom, the upper part is the recovery of fuel oil products.

[0042] The prepared fuel oil product is further distilled, and the fractions between 300-400°C are collected, and the fractions in this temperature range are added to the hydrofinishing catalyst reactor equipped wit

Embodiment 3

[0044] Distill the waste lubricating oil, collect the fraction between 300-500°C, and measure the density of the oil according to the national standard GB / T1884T2000 at 0.83-0.89g / cm 3, the viscosity is measured according to the national standard GB / T2651998 between 2-11Mpa·s. Control the obtained fraction: water: the mass ratio of concentrated sulfuric acid is 70:28:2, stir and mix it well to form a mixed solution, heat the mixture to 75°C while stirring, and add sodium hydroxide to neutralize to pH 7 , standing still for 90min, forming oil and water separation layer, the bottom is the waste water slag layer, the upper part is the fuel oil layer, remove the waste water slag layer at the bottom, and the upper part is the fuel oil product recovery.

[0045] The prepared fuel oil product is further distilled, and the fractions between 300-400°C are collected, and the fractions in this temperature range are added to the hydrofinishing catalyst reactor equipped with high water

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Abstract

The invention relates to the technical field of petrochemical engineering, and especially relates to a method for preparing fuel oil by taking waste lubricating oil as a raw material. The method comprises the following steps: collecting waste lubricating oil as the raw material, distilling and collecting a fraction; mixing the fraction with water and a strong-acidic catalyst, and fully stirring and mixing the above three compositions to form a mixed solution; heating the mixed solution to 60-90 DEG C with stirring, and adjusting pH to 7 to obtain an oil-water mixture; after the oil-water mixture is stirred, standing to form an oil-water separation layer, distilling to obtain a fraction, performing hydrofinishing on the fraction, performing secondary distilling and collecting a fraction to obtain the fuel oil. By employing the method provided by the invention for preparing the fuel oil, multiple distilling is performed, and the reaction product is further subjected to deep hydrotreatment through catalytic hydrogenation, the prepared fuel oil is clarified and transparent, the disadvantages of landfill treatment of waste oil as a waste are solved, and the pollution to environment is reduced.

Description

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Claims

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Application Information

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Owner JINAN DEV ZONE XINGHUO SCI & TECH RES INST
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