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Method for producing food grade white oil by hydrogenating tail oil

A hydrogenation tail oil, food-grade technology, applied in the field of hydrogenation tail oil production of food-grade white oil, can solve problems such as complex production process, and achieve the effect of many secondary holes, low investment and simple process flow

Active Publication Date: 2007-04-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technologies for producing white oil with hydrogenated tail oil as raw material all require the process of solvent dewaxing, catalytic dewaxing or isomerization dewaxing to reduce the pour point of hydrogenated tail oil before producing food-grade white oil. Therefore, the production process is more complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 227.1 g of amorphous silica-alumina (SiO 2 The content is 45w%, the pore volume is 0.75ml / g, and the specific surface area is 390m 2 / g), 18.8 grams of modified β molecular sieves, 65.8 grams of macroporous alumina (the pore volume is 1.0ml / g, and the specific surface area is 460m 2 / g) into the roller compactor, mixed for 30 minutes, then add 288.5 grams of binder (with a pore volume of 0.4ml / g and a specific surface area of ​​280m 2 / g of small-pore alumina 107.1g, HNO 3 Molar ratio to alumina is 0.3), rolling for 30 minutes, then add 60 ml of water, continue rolling until the paste can be extruded, extruded, and dried at 110°C for 6 hours. The dried strips were heated up to 580° C. and calcined for 4 hours to obtain the carrier. The carrier was impregnated with an impregnating solution containing tungsten and nickel for 2 hours at room temperature, dried at 120°C for 6 hours, and calcined at 480°C for 4 hours to obtain a hydrotreating catalyst. The physical and ch...

Embodiment 2

[0033] 252.8 grams of amorphous silicon aluminum (SiO 2 The content is 65w%, the pore volume is 0.58ml / g, and the specific surface area is 340m 2 / g), 9.4 grams of modified β molecular sieves, 41.1 grams of macroporous alumina (pore volume is 0.75ml / g, specific surface area is 360m 2 / g) put into the roller compactor and mix for 20 minutes, then add 323.1 grams of binder (with a pore volume of 0.45ml / g and a specific surface area of ​​300m 2 / g small pore alumina 120.0g, HPO 3 The molar ratio to alumina is 0.2), continue rolling for 40 minutes, then add 55 ml of water, roll until the paste can be extruded, extrude, and dry the extruded strips at 140°C for 3 hours. The drying strip was heated to 530° C. and calcined for 5 hours to obtain the carrier. The carrier was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 4 hours, dried at 130°C for 3 hours, and then calcined at 460°C for 5 hours to obtain catalyst B. The physical and...

Embodiment 3

[0036] 201.4 g of amorphous silica-alumina (SiO 2 The content is 30w%, the pore volume is 0.89ml / g, and the specific surface area is 460m 2 / g), 31.3 grams of modified β molecular sieves, 82.8 grams of macroporous alumina (same as Example 1) were put into the roller compactor and mixed for 40 minutes, then added 265.4 grams of binding agent (same as Example 1), and continued Roll for 25 minutes, then add 30 milliliters of water, roll to extrude paste, extrude, and extrude at 130°C for 4 hours. The drying strip was heated up to 680° C. and calcined for 2.5 hours to obtain the carrier. The carrier was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 8 hours, dried at 130°C for 4 hours, and calcined at 530°C for 3 hours to obtain catalyst C. The physical and chemical properties are shown in Table 1.

[0037] The properties of the modified β molecular sieve are: molecular sieve SiO 2 / Al 2 o 3 Weight ratio 85, specific surface ...

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Abstract

The present invention provides method of producing food grade white oil with hydrogenated tail oil. Hydrogenated tail oil as material is treated through one high pressure hydrogenating and refining process under proper condition to obtain the food grade white oil product. The hydrogenated tail oil is produced with vacuum gas oil, refined solvent oil or Fischer-Tropsch synthesized oil as material and through hydrocracking or hydrotreating process under the action of hydrogenating catalyst, and has pour point lower than -10deg.c.

Description

technical field [0001] The invention relates to a method for producing food-grade white oil from hydrogenated tail oil. The hydrogenated tail oil obtained through hydrogenation catalyst treatment with strong isomerization function is selected, and the method is directly high-pressure hydrogenated supplementary refining to produce food-grade white oil. Background technique [0002] White oil is a type of petroleum product obtained by deep refining of lubricating oil fractions to remove impurities such as aromatics and sulfides in lubricating oil fractions. It is colorless, odorless and stable in chemical properties, and is widely used in chemical industry, daily necessities, food, medicine, textile and agriculture and other fields. According to different uses and refining depths, white oil can be divided into industrial, cosmetic, food and pharmaceutical categories. Among them, food-grade white oil is the most refined. [0003] The white oil production process is mainly the...

Claims

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Application Information

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IPC IPC(8): C10G67/02A23D9/00
Inventor 关明华全辉姚春雷刘平林振发
Owner CHINA PETROLEUM & CHEM CORP
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