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Low-viscosity refrigerating machine oil base oil, preparation method and application thereof

A technology of refrigeration oil and low viscosity, applied in mixing methods, chemical instruments and methods, base materials, etc., can solve the problems of high base oil cost and easy to cause pollution, and achieve lower production costs, low flocculation point, and significant benefits. Effect

Pending Publication Date: 2021-11-19
CHINA OFFSHORE BITUMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the high cost of producing low-viscosity refrigerating machine oil base oil in the prior art and the problem of easy pollution, the present invention provides a low-viscosity refrigerating machine oil base oil and its preparation method and application. At the same time, no waste is produced, and the kinematic viscosity of the refrigeration oil base oil is low, and the low-temperature performance is good, and the indicators are obviously better than the GB / T 16630-2012 "Refrigeration Oil" standard requirements

Method used

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  • Low-viscosity refrigerating machine oil base oil, preparation method and application thereof
  • Low-viscosity refrigerating machine oil base oil, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] After stirring and mixing evenly, naphthenic straight-run diesel oil and coker diesel oil with a mass ratio of 1:1 are used as raw material oil, heated to 280°C, filtered through a filter, and then entered into a hydrogenation reaction device for hydrogenation reaction at a pressure of 15.0MPa. The first-stage reactor is filled with hydrodecondensation catalyst FDW-3 (ZSM-5 zeolite catalyst), the reaction temperature is 280°C, and the volume space velocity is 1.0 h -1 , the second-stage reactor is filled with supplementary refined catalyst RN-1 (nickel-tungsten type), the reaction temperature is 280°C, and the volume space velocity is 1.0 h -1 , The oil after the hydrogenation reaction is rectified and cut, and the light fraction before 260°C is cut off to obtain a low-viscosity refrigerating machine oil base oil.

Embodiment 2

[0033] Use naphthenic straight-run diesel oil, coker diesel oil and furfural extract oil with a mass ratio of 45:45:10 after stirring and mixing uniformly as raw material oil, heat it to 300°C and filter it through a filter, then enter the hydrogenation reaction device, at a pressure of 15.0MPa The hydrogenation reaction is carried out under the following conditions: the first stage of the reactor is filled with the hydrogen depreciation catalyst FDW-3 (ZSM-5 zeolite catalyst), the reaction temperature is 300 °C, and the volume space velocity is 1.0 h -1 , the second-stage reactor is filled with supplementary refined catalyst RN-1 (nickel-tungsten type), the reaction temperature is 300°C, and the volume space velocity is 1.0 h -1 ; After the hydrogenation reaction, the oil product is rectified and cut, and the light fraction before 260°C is cut off to obtain a low-viscosity refrigerating machine oil base oil.

Embodiment 3

[0035] The raw material oil is naphthenic straight-run diesel oil, coker diesel oil and furfural oil with a mass ratio of 35:35:30 after stirring and mixing evenly. The hydrogenation reaction is carried out under the pressure of MPa, and the first-stage reactor is filled with the hydrogen depreciation catalyst FDW-3 (ZSM-5 zeolite catalyst), the reaction temperature is 340°C, and the volume space velocity is 1.0 h -1 The second-stage reactor is filled with supplementary refined catalyst RN-1 (nickel-tungsten type), the reaction temperature is 340°C, and the volume space velocity is 1.0 h -1 ; After the hydrogenation reaction, the oil product is rectified and cut, and the light fraction before 260°C is cut off to obtain a low-viscosity refrigerating machine oil base oil.

[0036] The data of the products obtained in the above-mentioned Examples 1-3 (the yield is relative to the raw material oil), the standard is the standard index requirement of GB / T 16630-2012 "Refrigeration M...

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Abstract

The invention discloses low-viscosity refrigerating machine oil base oil, a preparation method and application thereof. The preparation method comprises the steps that one or more of naphthenic base straight-run diesel oil, coker diesel oil and furfural extract serve as raw material oil, heating and filtering are carried out, filtrate is sequentially subjected to hydrodewaxing and finishing reactions in a hydrogenation reaction device to obtain hydrofined oil, the hydrofined oil is rectified and cut, and light fractions are cut off to obtain the low-viscosity refrigerating machine oil base oil. According to the invention, naphthenic base straight-run diesel oil / coker diesel oil is used as raw oil, and furfural extract oil with low added value is added, so that the method has remarkable benefit advantages; and compared with a traditional process, a hydrogenation process is adopted, so that waste is not generated, the method is more environment-friendly, and all indexes of the prepared low-pour-point, low-flocculation-point and low-viscosity refrigerating machine oil base oil meet and are superior to the standard requirements of GB / T 16630-2012 refrigerating machine oil.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil preparation, and in particular relates to a low-viscosity refrigerating machine oil base oil and a preparation method and application thereof. Background technique [0002] Refrigeration oil is a special lubricating oil for refrigeration compressors, and it is a vital component in the refrigeration system that determines and affects the refrigeration function and effect. In order to achieve the goal of saving energy and increasing efficiency of refrigeration compressors, combined with the refrigeration conditions of hydrochlorofluorocarbons, the use of low-viscosity refrigeration oil can help reduce low-temperature viscosity and reduce starting power. Most of the matching refrigeration oil has a kinematic viscosity of about 40 °C Mineral oil of 8-12mm2 / s is the mainstream product, and this type of refrigerating machine oil is usually naphthenic mineral oil or low pour point paraffinic mine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00B01D3/14B01F3/08C10M109/00C10M177/00
CPCB01J19/0053B01J19/0006B01D3/14C10M109/00C10M177/00C10M2203/1006C10N2040/30
Inventor 冯涛张东春王春江
Owner CHINA OFFSHORE BITUMEN
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