Fixed bed adsorbing device for basic oil

Abstract

The invention provides a fixed bed adsorbing device for basic oil. The fixed bed adsorbing device comprises an input port, a fixed bed absorber, a filter and an output port, wherein the fixed bed absorber comprises a tube-shaped casing, a fixed bed layer arranged in the tube-shaped casing and an input cavity communicated with the tube-shaped casing and arranged under the fixed bed layer. The input cavity is a cone body with the upper top face larger than the lower bottom face, and the input port is horizontally arranged on the lateral wall of the cone body. The fixed bed layer comprises an upper partition board, a lower partition board and an absorber pressed tightly between the upper partition board and the lower partition board, wherein the upper partition board and the lower partition board are arranged in parallel mode. The basic oil is input into the input cavity through the input port, output into the filter after absorbed by the fixed bed layer and discharged through the output port after being filtered by the filter. The fixed bed adsorbing device for basic oil has the advantages of being simple in structure, high in automation degree, small in pollution and good in adsorbing performance.

Description

technical field [0001] The invention relates to the field of petroleum refining, in particular to a fixed-bed adsorption device for base oil. Background technique [0002] The fixed bed is a fixed bed of a certain height formed by stacking solid granular adsorbents. The material passes through the bed from the upper or lower part to achieve the purpose of mass transfer and full contact adsorption. It has the characteristics of simple operation and convenient control. [0003] The base oil obtained by molecular distillation also contains impurities such as azo, asphalt colloid, organic pigments, naphthenic acid, and trace metals decomposed by additives, odors, distillation entrained substances, etc., which need to be refined to improve the stability of the base oil. Keep the base oil with good physical and chemical properties. [0004] In the process of petroleum refining, lubricating oil production class I base oil is generally supplemented and refined with clay: the proces...

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Problems solved by technology

[0004] In the process of petroleum refining, lubricating oil production class I base oil is generally supplemented and refined with clay: the process is to mix clay and base oil in a reactor, heat and stir, let stand, and then press filter with a plate and frame filter. The equipment has a white clay feeding device, the investment cost of the whole device is large, and the energy consumption is also high

[0005] In addition, because the oil content of the clay adsorption residue is as high as about 46% (clay dry basis), the amount of use is relatively large, so its use is disposable and cannot be reused, and the solid waste disposal needs to be incinerated, and the cost is about 2000 Yuan / ton, not only the production cost is high, but also the processing process is complicated

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