A kind of preparation method of refrigerating machine oil base oil

A technology for refrigerating machine oil and base oil, which is used in base materials, petroleum industry, processing hydrocarbon oil, etc., can solve problems such as few research reports, and achieve the effects of high economic value, simple and environmentally friendly process, and easy preparation.

Active Publication Date: 2011-12-28
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, mineral type hermetic refrigerating machine oils at home and abroad mainly have viscosity grades of 8, 10, 12, 15, 22mm 2...

Method used

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  • A kind of preparation method of refrigerating machine oil base oil
  • A kind of preparation method of refrigerating machine oil base oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The hydrogenation reaction catalyst is loaded into the hydrotreating fixed-bed reactor for presulfurization, and the presulfurized catalyst is ready for use. The hydrogenation reaction catalyst components and their proportions by weight of the catalyst are: 25.2% of nickel oxide, 2% of molybdenum oxide, 4.5% of cobalt oxide, 3% of tungsten oxide, 15% of silica carrier, and the balance of alumina carrier, Catalyst average pore size 100 , The specific surface area is 350m 3 / g, the pore volume is 0.3cm 3 / g, the strength is 200N / mm.

[0020] The pre-sulfurization process conditions are: use carbon disulfide CS which accounts for 2% of the weight of the vulcanized oil 2 And the remaining kerosene is used as vulcanized oil, and hydrogen gas is passed under the hydrogen partial pressure of 6MPa, the vulcanization temperature is 280°C, and the space velocity is 0.5h -1 , the volume ratio of hydrogen to oil is 1000:1, and the vulcanization time is 50 hours.

[0021] The ...

Embodiment 2～10

[0024] According to the preparation process of Example 1 and the method for analyzing the properties of refrigerating machine oil, the preparations of Examples 2 to 10 were carried out, wherein the preparation process conditions of "hydrogenation-clay supplementation refining" are shown in Table 1, and the cutting process conditions of oil produced after hydrogenation Same as in Example 1, the properties of the prepared refrigerating machine oil base oil are shown in Table 2.

[0025]

[0026]

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Abstract

The invention relates to a preparation method of refrigerator oil base oil. The method comprises the following steps of performing hydrotreatment on 300-500 DEG C naphthene petroleum fractions used as a raw material at a pressure of 2.0-20.0 MPa, a temperature between 250 and 400 DEG C, an air speed of 0.1-2.0 h-1, and a hydrogen-oil volume ratio of 100:1-2000:1; and cutting the hydrogenated oil into 270-320 DEG C fractions, and replenishing with white clay and refining, wherein the addition weight of the white clay is 1-6% of the weight of the distillate oil, the temperature is 60-120 DEG C and the time is 30-120 min, the catalyst active component in the hydrogenation reaction is one, two or more than three of Ni, W, Mo and Co, and the carrier is aluminum oxide. The coefficient of kinematic viscosity at 40 DEG C of the refrigerator oil base oil is 4-6 mm<2>/s, the flocculation point is less than -60 DEG C, the CA value is 2-12%, and the contents of nitrides and polycyclic aromatic hydrocarbons are low; and the base oil is suitable for a refrigerating compressor system of hydrocarbon coolant with 3 or 4 carbon atoms.

Description

technical field [0001] The invention relates to a method for preparing refrigerating machine oil base oil. The refrigerating machine oil is suitable for a refrigeration compressor system using hydrocarbon refrigerants, mainly hydrocarbons with 3 or 4 carbon atoms, as refrigerants. Background technique [0002] CN1944588A discloses a method for producing lubricating oil base oil from hydrogenated tail oil, which uses vacuum distillate, solvent refined deasphalted oil and Fischer-Tropsch synthetic oil as raw materials, adopts a catalyst containing modified β molecular sieve, and undergoes hydrogenation to obtain The hydrogenated tail oil with an initial boiling point of 320-390°C is refined with clay or supplemented with hydrogen at medium pressure to obtain a high viscosity index lubricating base oil product (HVI150). The invention uses hydrogenated tail oil with an initial boiling point of 320-390°C as the raw material, and the target product produced is a lubricating oil ba...

Claims

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Application Information

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IPC IPC(8): C10G67/06C10M177/00C10M101/02C10N40/30
Inventor 柯友胜刘燕张霞玲王凯明
Owner PETROCHINA CO LTD
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