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Method for producing naphthenic base refrigerating machine oil base oil by using coal tar oil

A technology for refrigerating machine oil and coal tar, which is applied in the petroleum industry, processing hydrocarbon oil, hydrogenation process, etc. It can solve the problems of long process, unprepared refrigerating machine oil, and high quality, and achieve high quality and extend the hydrogenation industry chain , The effect of broadening the source of raw materials

Active Publication Date: 2015-05-27
王树宽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method uses the "old three sets" process to prepare refrigeration oil, which has a long process, and there is no hydrogenation method to obtain high-quality products
[0007] Chinese patent CN 1 260 824 and Japanese JP 53 136 005 disclose a method for producing refrigerating machine oil with paraffin-based crude oil, but the low-temperature performance of the paraffin-based product is not as good as that of naphthenic products
The raw materials of these reported processes are all naphthenic crude oil, and there is no process report on the preparation of refrigerating machine oil from coal tar or its derivatives.

Method used

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  • Method for producing naphthenic base refrigerating machine oil base oil by using coal tar oil
  • Method for producing naphthenic base refrigerating machine oil base oil by using coal tar oil
  • Method for producing naphthenic base refrigerating machine oil base oil by using coal tar oil

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Experimental program
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Effect test

Embodiment 1

[0036] In this embodiment, the medium and low temperature coal tar produced in the coal pyrolysis process is used as raw material to prepare naphthenic refrigerating machine oil base oil, and the method is realized by the following steps:

[0037] (1) Primary hydrotreating of coal tar

[0038]Mix medium and low temperature coal tar and hydrogen into the primary hydrogenation reactor for primary hydrogenation refining. The reaction temperature is 370°C, the reaction pressure is 14MPa, the hydrogen-oil volume ratio is 1000:1, and the liquid volume space velocity is 0.3h -1 , to obtain a first-grade coal tar hydrorefining product;

[0039] The primary hydrotreating catalyst used in this example is the TK-561 catalyst developed by TOPSOE (http: / / www.topsoe.com / products / CatalystPortfolio.aspx), which uses aluminum oxide as a carrier and has a catalytic activity of The content of molybdenum trioxide in the metal is at least 20wt%, the content of nickel oxide is at least 5wt%, the t...

Embodiment 2

[0059] In this example, the reaction temperature of step (1) is 380°C, the reaction pressure is 15MPa, the volume ratio of hydrogen to oil is 800:1, and the liquid volume space velocity is 0.4h -1 , to obtain the primary coal tar hydrorefining product; in step (3), the residual oil fraction is mixed with hydrogen and then carried out in the secondary hydrogenation reactor for secondary hydrorefining, the reaction temperature is 360 ° C, and the reaction pressure is 15 MPa , the volume ratio of hydrogen to oil is 800:1, and the liquid volume space velocity is 0.8h -1 . The other steps were the same as in Example 1 to obtain refrigerating machine oil base oil, the yield of which is shown in Table 4, and the properties of the obtained refrigerating machine oil base oil were shown in Table 5.

Embodiment 3

[0061] In this example, the reaction temperature of step (1) is 370°C, the reaction pressure is 14MPa, the volume ratio of hydrogen to oil is 1000:1, and the liquid volume space velocity is 0.3h -1 , the primary hydrotreating catalyst used is the FZC-41A catalyst produced by Shandong Gongquan Chemical Co., Ltd. (http: / / www.gqcat.com.cn / Chinese / ProductList.asp?PID=25), and the primary Coal tar hydrorefining product; in step (3), after mixing the residual oil fraction with hydrogen, carry out secondary hydrofining in the secondary hydrogenation reactor, the reaction temperature is 360°C, the reaction pressure is 13MPa, and the volume of hydrogen oil The ratio is 800:1, and the liquid volume space velocity is 0.7h -1 , the secondary hydrorefining catalyst used is the FV-1 catalyst of China Petrochemical Corporation (http: / / www.sinopec.com / products_services / for_business / catalysts / ). The other steps were the same as in Example 1 to obtain refrigerating machine oil base oil, the yi...

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Abstract

The invention relates to a method for producing naphthenic base refrigerating machine oil base oil by using coal tar oil. The method comprises the following steps of: (1) carrying out first-stage hydrofining on the coal tar oil; (2) carrying out fractional distillation on a first-stage hydrofining product; (3) carrying out secondary-stage hydrofining on residual oil fractions; (4) carrying out fractional distillation on secondary-stage hydrofining oil; (5) carrying out clay refining on refrigerating machine oil distillate oil, thus obtaining high-additional value products such as the naphthenic base refrigerating machine oil base oil, naphtha oil, diesel oil and refrigerating machine oil base oil. The method has the advantages that the hydrogenation industrial chain of the coal tar oil is extended, the utilization value of the coal tar oil is increased, and the refrigerating machine oil base oil with the high quality is obtained.

Description

technical field [0001] The invention relates to a method for preparing naphthenic refrigerating machine oil base oil, in particular to a method for preparing naphthenic refrigerating machine oil base oil by using coal tar as a raw material. Background technique [0002] Refrigeration oil is a special lubricating oil for refrigeration compression devices, and it is an important part that determines and affects the refrigeration function and effect of the refrigeration system. During the working process of the refrigeration compressor, the low temperature is obtained by decompression and evaporation of the refrigerant, and the refrigeration machine oil lubricates the working parts of the refrigeration device. Since the refrigerating machine oil must be in the low-temperature environment of the refrigerating system for a long time, the raw materials used to produce the refrigerating machine oil must be selected. According to different production raw materials, commonly used re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/06C10M177/00
Inventor 王树宽杨占彪
Owner 王树宽
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