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Method of two-stage hydrogenation treatment regeneration technology for full-fraction waste mineral oil

A waste mineral oil, hydrogenation treatment technology, applied in the direction of hydrogenation treatment process, hydrocarbon oil treatment products, petroleum industry, etc., can solve the problems of low purity of regenerated lubricating oil, low yield of base oil, low regeneration efficiency, etc. Achieve the effects of improving product viscosity index and oxidation stability, reducing product pour point and improving product quality

Active Publication Date: 2018-07-06
新疆聚力环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of this technical solution is: the purity of the regenerated lubricating oil after the pretreatment method is not high, the regeneration efficiency is not high, and the pretreatment step is not convenient, which is not conducive to industrialized integrated production
However, the yield of regenerated base oil after pretreatment such as vacuum distillation process is low, only below 80%, causing a lot of waste

Method used

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  • Method of two-stage hydrogenation treatment regeneration technology for full-fraction waste mineral oil
  • Method of two-stage hydrogenation treatment regeneration technology for full-fraction waste mineral oil
  • Method of two-stage hydrogenation treatment regeneration technology for full-fraction waste mineral oil

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Experimental program
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Effect test

Embodiment 1

[0068] Such as figure 1 Shown, the method for a kind of full fraction waste mineral oil two-stage hydrotreating regeneration process of the present invention comprises the steps:

[0069] S1. Filtration treatment process unit

[0070] S1-1. Waste mineral oil enters the settling tank first, and settles to remove water, sludge and large solid particles in the oil;

[0071] S1-2. Heat the settled raw materials to 85°C, then add demulsifier and mix to remove water-soluble substances in the oil phase;

[0072] S1-3, and then the materials are sequentially entered into the closed mechanical interception pre-filter and the closed mechanical interception fine filter to further remove solid impurities and water;

[0073] S2. Low-pressure hydrogenation reaction process unit

[0074] S2-1. After heating the filtered waste mineral oil to 330°C, transport it to a low-pressure hydrogenation device with a pressure of 3MPa for low-pressure hydrogenation reaction;

[0075] S2-2. The materi...

Embodiment 2

[0104] Repeat embodiment 1, difference is: raw material 2 in table 1 passes through following process condition, and this raw material passes through low-pressure hydroprocessing unit and high-pressure hydroprocessing unit, and the main process condition that raw material enters two processing units is shown in Table 5; Table 6 shows the raw material properties of the lubricating oil base oil produced by the low-pressure hydroprocessing unit. The properties of the product lubricating base oil after high-pressure hydrotreating are shown in Table 7.

[0105] Table 5 embodiment 2 raw material enters the main process condition of two process units

[0106] Process conditions

Low pressure hydrotreating process unit

High pressure hydrotreating process unit

temperature / ℃

Raw materials enter the heating furnace and exit 200 / 320

Raw materials enter the heating furnace outlet 340

Pressure / MPa

4.0

12.0

airspeed

0.2

1.2

Hydr...

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Abstract

The invention discloses a method of a two-stage hydrogenation treatment regeneration technology for full-fraction waste mineral oil. The method comprises the following steps: S1, a filtering treatmenttechnology unit; S2, a low-pressure hydrogenation reaction technology unit; S3, a high-pressure hydrogenation reaction / fractionation technology unit. According to the method disclosed by the invention, the waste mineral oil is not subjected to a pre-treatment process of traditional raw material separation technologies, such as water washing, flocculation, adsorption, extraction, decompression anddistillation (scraping membrane evaporation or molecular distillation), and a combined technology thereof and the like, and full fractions subjected to dehydration and filtering treatment are directly subjected to low-pressure hydrogenation treatment to remove colloid asphalt and impurities including heavy metal and non-metal chlorine, silicon, phosphorus and the like; then hydrogenation treatment including high-pressure hydrogenation refining, modification, aromatic removal and the like is carried out and fractional distillation is carried out to produce basic oil of high-grade III type lubricating oil. According to the method disclosed by the invention, the operation period of a high-pressure hydrogenation and fractionation device can be improved to 20 months or more; the yield of the basic oil of the lubricating oil of a full-fraction low-pressure hydrogenation technology can reach 85 to 95 percent.

Description

technical field [0001] The invention belongs to the technical field of energy saving and environmental protection, and in particular relates to a method for a two-stage hydrogenation regeneration process of whole distillate waste mineral oil. Background technique [0002] In terms of composition, lubricating oil is composed of 80%-90% base oil and 10%-20% additives. The main chemical composition is a mixture of various hydrocarbons and a small amount of non-hydrocarbons. However, after the lubricating oil has been used for a period of time, the performance of the lubricating oil has deteriorated due to physical, chemical or human factors, such as aldehydes, ketones, resins, asphalt colloidal substances, carbon black and organic acids, salt, water, metal shavings, etc. Contaminated impurities can no longer be used and become waste lubricating oil. In fact, waste lubricating oil is not waste, but only a few percent of the used lubricating oil has really deteriorated. Therefor...

Claims

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Application Information

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IPC IPC(8): C10G67/14
CPCC10G67/14C10G2300/1007C10G2300/202C10G2300/205C10G2300/206C10G2300/302C10G2300/304C10G2400/10
Inventor 蔡德民徐冀杨开财
Owner 新疆聚力环保科技有限公司
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