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Method for hydrogenation of medium-low temperature coal tar to produce refrigerator oil base oil

A technology for low-temperature coal tar and refrigerating machine oil, which is applied in the field of refrigerating machine oil base oil, can solve the problems of reduced production, poor quality, inability to stabilize resources of refrigerating machine oil, etc., and achieves the effect of promoting rational utilization and increasing the characteristics of distillate oil.

Active Publication Date: 2015-04-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Liaohe Huanxiling crude oil can no longer be used as a stable resource for the production of refrigeration oil due to the decrease in output and deterioration in quality

Method used

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  • Method for hydrogenation of medium-low temperature coal tar to produce refrigerator oil base oil

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Experimental program
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Effect test

Embodiment 1

[0037] Datang low-temperature coal tar is used as raw material, and the cut point is 500°C. The specific properties are shown in Table 1. The hydrogenation protection catalyst FZC-103 and the hydrofinishing catalyst 3936 are filled in the hydrotreatment reaction zone, and the filling volume ratio of the hydrogenation protection catalyst FZC-103 and the hydrofinishing catalyst 3936 is 1:4. The hydrogenation upgrading reaction zone is filled with FTX catalyst and FC-28 catalyst, and the loading volume ratio is 1:1. The hydrogenation supplementary refining reaction zone is filled with hydrofining catalyst FV-10. The process conditions and product properties of the hydrogenation process are shown in Table 2 .

Embodiment 2

[0039] Ito medium-temperature coal tar is used as raw material, and the cut point is 500°C. The specific properties are shown in Table 1. The hydrogenation protection catalyst FZC-103 and the hydrofinishing catalyst 3936 are filled in the hydrotreatment reaction zone, and the filling volume ratio of the hydrogenation protection catalyst FZC-103 and the hydrofinishing catalyst 3936 is 1:4. The hydrogenation upgrading reaction zone is filled with FTX catalyst and FC-28 catalyst, and the loading volume ratio is 1:1. The hydrogenation supplementary refining reaction zone is filled with hydrofining catalyst FV-10. The process conditions and product properties of the hydrogenation process are shown in Table 2 .

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Abstract

The invention discloses a method for hydrogenation of medium-low temperature coal tar to produce refrigerator oil base oil. The method includes: fractionating the medium-low temperature coal tar to obtain light fraction and heavy fraction, mixing the light fraction with hydrogen and leading the mixture into a hydrotreating reaction area to contact a hydrogenation protective catalyst and a hydrofining catalyst in order to undergo hydrogenation reaction; separating the hydrofining effluent, making the obtained liquid phase product enter a fractionating tower; bringing the 320-350DEG C diesel fraction obtained by fractionation into a hydro-upgrading reaction area where a hydro-upgrading catalyst containing amorphous aluminium silicon and modified Y zeolite is adopted, and performing hydro-upgrading reaction in the presence of hydrogen; subjecting the hydro-upgrading effluent into a hydrofinishing reaction area to undergo hydrofinishing reaction, and separating the hydrofinishing product to obtain the refrigerator oil base oil. The method provided by the invention adopts the medium-low temperature coal tar as the raw material to produce the refrigerator oil base oil with the characteristics of good low-temperature fluidity, corrosiveness, intersolubility with refrigerant and oxidation stability.

Description

technical field [0001] The invention relates to a production method of refrigerating machine oil base oil, specifically a method of hydrogenation in two stages of hydrogenation-hydrogenation upgrading / hydrogenation supplementary refining by using medium and low-temperature coal tar pretreated by raw materials A method for producing refrigerating machine oil base oil. Background technique [0002] Refrigeration machine oil is a special oil product that requires strong lubricity, low temperature fluidity, oxidation stability and high flash point. It is also required that the refrigerator oil and the refrigerant can be miscible, the product has excellent chemical stability, and can last as long as the compressor. These stringent requirements are currently only met by naphthenic oil and synthetic oil among mineral oils. Therefore, naphthenic oil has become the main raw material for the manufacture of refrigerating machine oil. The mineral oil-type refrigerating machine oils cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M177/00C10M101/02C10G67/02
Inventor 赵威姚春雷全辉张志银林振发孙国权
Owner CHINA PETROLEUM & CHEM CORP
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