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Coalescence separation type decoloring device and method for base oil solvent extraction raffinate

A technology of coalescence separation and coalescence separator, which is applied in the direction of separation method, solvent extraction, liquid solution solvent extraction, etc., can solve the problem of darkening the color, and achieve the effect of continuous production and high efficiency

Pending Publication Date: 2022-03-15
安徽国孚凤凰科技有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide a coalescence separation decolorization device and method for base oil solvent extraction raffinate, which uses coalescence separation technology to solve the problem that the raffinate oil becomes darker after evaporation of NMP solvent

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  • Coalescence separation type decoloring device and method for base oil solvent extraction raffinate
  • Coalescence separation type decoloring device and method for base oil solvent extraction raffinate

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Embodiment Construction

[0020] The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and cannot be interpreted as limiting the protection scope of the application. The above application content makes some non-essential improvements and adjustments to this application.

[0021] combine figure 1 with figure 2 As shown, a coalescence separation decolorization device for base oil solvent extraction raffinate, the decolorization device is connected to the raffinate outlet of base oil solvent extraction device 1, and the decolorization device includes intermediate tanks 2, coalescence Separator 3, heater 4 and wiped film evaporator 5, and the pump body 6 that is arranged on the pipeline, coalescing separator 3 comprises shell, is formed with connected coalescing chamber 301 and separating chamber 302 inside the shell, coalescing The ...

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Abstract

The invention discloses a coalescence separation type decoloring device and method for base oil solvent extraction raffinate, and the method comprises the following steps: guiding the raffinate into an intermediate tank for buffer sedimentation, then guiding the raffinate into a coalescence separator, and separating the raffinate under the coalescence action of tubular arrangement filaments and blocky arrangement filaments to obtain the base oil solvent extraction raffinate. According to the method, the fine filaments are separated, a solvent doped in the raffinate and impurities dispersed in the solvent are adsorbed to the surfaces of the fine filaments, the fine filaments are wetted, along with the increase of the adsorption amount, the solvent and the impurities dispersed in the solvent gradually form large liquid beads and fall off, the large liquid beads enter the separation cavity after falling off, and separation is achieved due to different densities. According to the method, the NMP solvent and impurities in the raffinate are coalesced to form large liquid beads by utilizing a coalescence separation technology, so that the large liquid beads are separated from the base oil, the residual content of the NMP solvent in the raffinate is less than 1%, the corresponding impurity content is also greatly reduced, and after the residual NMP solvent is subsequently evaporated out, the chromaticity of the obtained base oil is lower than 9 # and meets the standard; the continuous production can be realized, and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of waste lubricating oil treatment, in particular to a coalescence-separation decolorization device and method for base oil solvent extraction raffinate. Background technique [0002] Lubricating oil is composed of base oil and a certain amount of additives. After a period of use, lubricating oil will lose its normal function due to the introduction of impurities and deterioration of additives, and become waste lubricating oil. Waste lubricating oil contains saturated oil (light component base oil, as the reason component) and unsaturated oil, and also contains impurities such as sludge, metal particles, carbon black, water, additives and degradation products. [0003] With the development of technology and the improvement of environmental protection requirements, waste lubricating oil can be processed to obtain regenerated base oil. The main process includes distillation and extraction. The waste lubricatin...

Claims

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Application Information

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IPC IPC(8): B01D17/022B01D17/09B01D17/025B01D11/04C10M175/00
CPCB01D11/0488B01D11/0492B01D17/02B01D17/005B01D17/0208B01D17/0202C10M175/005C10M175/0025C10M175/0083
Inventor 李书龙汪绪武
Owner 安徽国孚凤凰科技有限公司
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