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Transformer oil base oil and preparation method thereof

A technology for transformer oil and base oil, which is applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil processing products, etc., can solve the problems of limited naphthenic distillate oil resources, low yield of target products, and long process.

Active Publication Date: 2018-12-11
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The main purpose of the present invention is to provide a kind of transformer oil base oil and preparation method thereof, to solve the preparation method process in the prior art is long, cost is high, the target product yield is low, continuity is poor, processing capacity is small and cycloalkyl Distillate oil resources are limited and a large amount of environmental pollution (such as acid slag, nitrogen slag, white clay slag) is produced

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  • Transformer oil base oil and preparation method thereof
  • Transformer oil base oil and preparation method thereof
  • Transformer oil base oil and preparation method thereof

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preparation example Construction

[0080] As described in the background technology section, the existing methods for the preparation of transformer oil base oils cannot solve the problems of long process, high cost, low yield of target product, poor continuity, small processing capacity, limited resources of naphthenic distillates and production The problem of a large amount of environmental pollution (such as acid residue, nitrogen residue, white earth residue). In order to solve the above problems, the present invention provides a method for preparing a transformer oil base oil, the preparation method comprising: 1) fractionating coal direct liquefied oil to obtain a diesel fraction, and the distillation range of the diesel fraction is 290-330°C; 2) subjecting the diesel fraction to hydrogenation refining reaction to obtain a hydrogenation product; 3) subjecting the hydrogenation product to a hydrogenation upgrading reaction to obtain a first transformer oil base oil; 4) subjecting the first transformer oil b...

Embodiment 1

[0103] Shenhua coal direct liquefied oil is used as raw material (coal direct liquefied oil is prepared by mixing medium-temperature oil and high-temperature oil at a ratio of 1:6), and the specific properties of medium-temperature oil and high-temperature oil are shown in Table 1. The hydrogenation protection catalyst RGC-1 and the hydrofinishing catalyst RNC-2 are filled in the hydrofinishing reaction zone, and the filling volume ratio of the hydrogenation protection catalyst RGC-1 and the hydrofinishing catalyst RNC-2 is 1:4. The hydrogenation upgrading reaction zone is filled with hydrogenation upgrading catalyst RCC-1. The hydrogenation supplementary refining reaction zone is filled with hydrogenation supplementary refining catalyst RLF-20. The process conditions and product properties of the hydrogenation process are shown in Table 2 and Table 3.

Embodiment 2

[0105] Shenhua coal direct liquefied oil is used as raw material (coal direct liquefied oil is prepared by mixing medium-temperature oil and high-temperature oil at a ratio of 1:1), and the rest is the same as in Example 1. The process conditions and product properties of the hydrogenation process are shown in Table 2 and Table 2. 3.

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Abstract

The invention provides a transformer oil base oil and a preparation method thereof. The preparation method comprises the following steps: 1) fractionating a coal direct liquefied oil to obtain a diesel fraction, wherein the distillation range of the diesel fraction is 290-330 DEG C; 2) performing hydrotreating reaction on the diesel fraction to obtain a hydrogenation product; 3) subjecting the hydrogenation product to a hydro-upgrading reaction to obtain a first transformer oil base oil; 4) subjecting the first transformer oil base oil to a hydrogenation replenishing reaction to obtain a second transformer oil base oil; wherein the coal direct liquefied oil comprises oil A and oil B, wherein the volume ratio of the oil A to the oil B is (1:1) to (1:10), wherein the oil A and the oil B bothcontain a certain amount of chain alkane, cycloalkane, monocyclic aromatic hydrocarbon, bicyclic aromatic hydrocarbon and tricyclic aromatic hydrocarbon, the sum of the contents of the components isequal to 100%. The preparation method has short process flow, low energy consumption, high target product yield and excellent performance.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a transformer oil base oil and a preparation method thereof. Background technique [0002] Transformer oil refers to a type of liquid insulating material used for insulation, cooling and arc extinguishing in oil-filled electrical equipment such as transformers, reactors, transformers, bushings, and oil switches. The main functions of transformer oil include insulation protection, heat cooling and arc extinguishing, so the requirements for the electrical and physical and chemical properties of transformer oil are particularly high. Among the important properties of transformer oil, the cooling and heat dissipation performance, solubility performance, oxidation resistance, aging performance, electrical performance, low temperature performance and anti-gassing performance are closely related to the hydrocarbon composition of the oil. [0003] Transformer oil base oil is the ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2400/12
Inventor 单贤根舒歌平章序文杨葛灵王洪学曹雪萍
Owner CHNA ENERGY INVESTMENT CORP LTD
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