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Recovery method of oil in waste white clay and utilization method of recovered oil in waste white clay

A recovery method and technology for waste clay, which are applied to the recovery of oil in waste clay and the utilization of oil recovered from waste clay, can solve the problems of high construction and use costs, and achieve the effects of reducing energy consumption, eliminating pollution and improving yield.

Active Publication Date: 2021-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to obtain the oil dissolved in the solvent, it is necessary to build a separate recovery device to separate the mixture of the extraction solvent and the oil, and there are problems of high construction and use costs.

Method used

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  • Recovery method of oil in waste white clay and utilization method of recovered oil in waste white clay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] This embodiment is used to illustrate the recovery and utilization method of oil in waste clay provided by the present invention.

[0113] according to figure 1 The process is to recover the oil in the waste clay obtained by supplementing and refining the clay, and mix the recovered oil in the waste clay with the raw material oil used as the raw material for lubricating oil base oil production in Comparative Example 1, at a temperature of 100 ° C and a pressure of 0.05 MPa. After pretreatment, the lubricating oil base oil was produced using the same process flow and conditions as in Comparative Example 1. The difference was that the first experiment used the clay obtained in Comparative Example 1 to refine waste clay, and the second experiment used the first experiment The obtained waste clay was repeated for several times. When the results of two consecutive experiments were the same, the results of the last experiment were taken. See Table 2 for details.

[0114] The...

Embodiment 2

[0128] This embodiment is used to illustrate the recovery and utilization method of oil in waste clay provided by the present invention.

[0129] according to figure 1 The process is to recover the oil in the waste clay obtained by supplementing and refining the clay, and mix the recovered oil in the waste clay with the raw material oil used as the raw material for lubricating oil base oil production in Comparative Example 2, at a temperature of 100 ° C and a pressure of 0.05 MPa. After pretreatment, use the same technological process and conditions as Comparative Example 2 to produce lubricating oil base oil. The difference is that the first experiment used the white clay obtained in Comparative Example 2 to refine waste clay, and the second experiment used the first experiment The obtained waste clay was repeated for several times. When the results of two consecutive experiments were the same, the results of the last experiment were taken. See Table 2 for details.

[0130] ...

Embodiment 3

[0139] This embodiment is used to illustrate the recovery and utilization method of oil in waste clay provided by the present invention.

[0140] according to figure 1 The process is to recover the oil in the waste clay obtained by supplementing and refining the clay, and mix the recovered oil in the waste clay with the raw material oil used as the raw material for lubricating oil base oil production in Comparative Example 3, at a temperature of 100 ° C and a pressure of 0.05 MPa. After the pretreatment, the lubricating oil base oil was produced using the same technological process and conditions as in Comparative Example 3, the difference being that the first experiment used the white clay obtained in Comparative Example 3 to refine waste clay, and the second experiment used the first experiment The obtained waste clay was repeated for several times. When the results of two consecutive experiments were the same, the results of the last experiment were taken. See Table 2 for d...

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Abstract

The invention relates to the field of petrochemical industry, and discloses a method for recovering oil from waste white clay and a method for utilizing recovered oil from waste white clay, wherein the method includes: in the presence of air flow, mixing the waste white clay to be treated with a desorbent contact, to desorb the oil in the waste clay to obtain a mixture containing oil, desorbent and waste clay; carry out the first sedimentation and first separation of the mixture containing oil, desorbent and waste clay; Containing the primary treatment oil, part of the primary treatment desorbent and the upper layer of the first separation with a small amount of waste clay adhered to the second sedimentation, and the second separation; the secondary treatment oil with a small amount of waste clay adhered to the phase separation for solid-liquid separation , to obtain the treated oil; the solid-liquid phase containing the primary treatment waste clay and part of the primary treatment desorbent is subjected to solid-liquid separation to obtain the treatment waste clay and the second treatment desorbent; the treatment oil is returned as raw material oil; the treatment The desorbing agent returns as a desorbing agent; the desorbing agent is water. The method of the invention can effectively recover the lubricating oil base oil in the waste clay.

Description

technical field [0001] The invention relates to a treatment method for supplementing and refining waste clay in the production process of lubricating oil base oil, in particular to a method for recovering oil from waste clay and a method for utilizing recovered oil in waste clay. Background technique [0002] In order to improve the properties of lubricating base oils such as color, oxidation stability and viscosity-temperature performance, it is necessary to remove the non-ideal components in the production raw materials of lubricating base oils, and keep the ideal components with light color, good oxidation stability and viscosity-temperature performance. components. The ideal components are mainly isoparaffins, naphthenes and aromatics with few rings and long side chains, and the non-ideal components are mainly polycyclic short side chain aromatics and heteroatom compounds. At present, methods such as solvent refining and hydrotreating are mainly used to improve the prop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/02C10G53/04C10G53/08C10G25/12C10M177/00
Inventor 丁洛管翠诗王玉章蔡晨闫亮
Owner CHINA PETROLEUM & CHEM CORP