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Method for producing industrial grade white oil

A production industry, industrial-grade technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of low catalyst activity, high metal catalyst, inability to apply activity, etc., achieve high activity, reduce reaction temperature, The effect of strong market adaptability

Active Publication Date: 2007-05-30
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These catalysts are used in white oil refining, and each has its own advantages and disadvantages: the catalyst with strong sulfur resistance has low activity, especially the saturation activity of aromatic hydrocarbons, but has strong sulfur resistance, and can be used for desulfurization and denitrogenation in raw materials with high sulfur and nitrogen content. occasion
The disadvantage of this method is that because there is a certain amount of sulfur-containing compounds in the raw material, a metal catalyst with high activity cannot be used, but a refined catalyst with strong anti-sulfur ability is used, so the content of aromatics in the product is still high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] The preparation of the catalyst carrier: a kind of macroporous aluminum hydroxide dry powder (refers to the pore volume greater than 0.8ml·g -1 Aluminium hydroxide powder) 1000g, 25g acetic acid, 25g citric acid, 25g sesame powder and 800ml deionized water are added, kneaded, extruded, dried at 110°C for 3 hours, and calcined at 550°C for 3 hours to prepare a carrier. The pore volume of the carrier is 0.71ml·g -1 , The specific surface is 316m 2 ·G -1 、Bulk density is 54g·(100ml) -1 , The shape is cylindrical, the particle size is Ф1.6×(4-6)mm.

[0022] Preparation of immersion solution: add 750g of nickel nitrate to 630ml of deionized water at a temperature of 20°C, stir to dissolve, filter and make up water to obtain 1000ml of nickel nitrate aqueous solution, the nickel content in the solution is 18.9g / 100ml calculated as NiO.

[0023] Dry the carrier prepared above at 120°C for 3 hours, take 100 g after cooling, and use 120 ml of the above-mentioned impregnating solution...

example 2

[0025] The rest of this embodiment is the same as that of Example 1, except that the third dipping is performed after the second dipping, the amount of dipping solution is 80 ml, and the dipping, drying, and roasting conditions are the same as the previous two. The prepared catalyst is denoted as C2, and the main physical and chemical properties are shown in Table 1.

example 3

[0027] The rest of this embodiment is the same as Example 2, except that the fourth dipping is performed after the third dipping, the amount of dipping solution is 80 ml, and the dipping, drying, and roasting conditions are the same as the previous three times. The prepared catalyst is denoted as C3, and the main physical and chemical properties are shown in Table 1.

[0028] Table 1 Main physical and chemical properties of white oil hydrorefining catalyst

[0029] Remind

[0030] 2. Hydrogen reduction of catalyst

[0031] Before use, the above catalyst is put into a fixed bed reactor for hydrogen reduction, and the nickel oxide in the catalyst is reduced to metallic nickel. The conditions for the reduction are shown in Table 2.

[0032] Table 2 Process conditions of catalyst hydrogen reduction

[0033] Hydrogen pressure

[0034] 3. The method of producing industrial grade white oil

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Abstract

The industrial white oil producing process includes the following steps: 1. catalytically dewaxing hydrocracked tail oil as material oil under the action of shape selecting catalyst; 2. fractioning in fractionating tower and leading out side oils of different viscosities from different side lines; and 3. feeding side oils to corresponding fixed bed reactors with hydrorefining reducing nickel metal catalyst to produce industrial white oils in corresponding grades via one section of hydrorefining. The present invention has reduced reaction temperature, reduced viscosity lowering of the hydrorefined material, capacity of reaching the saturated aromatic hydrocarbon level, flexible operation and high market adaptability.

Description

Technical field [0001] The invention relates to a method for producing industrial-grade white oil, in particular, a method for producing industrial-grade white oil with different labels after hydrorefining with hydrocracking tail oil as a raw material. Background technique [0002] The raw material oil for producing white oil includes lubricating oil base oil, vacuum distillate oil and hydrocracking tail oil. The raw material oil is refined to remove sulfur, nitrogen compounds and aromatics to obtain a colorless, odorless, and chemically stable category. Liquid petroleum products. The label is distinguished by viscosity. According to the kinematic viscosity at 40°C, it is divided into low-viscosity white oil, medium-viscosity white oil and high-viscosity white oil. In addition, according to the depth of refining, white oil is divided into industrial-grade white oil, cosmetic-grade white oil, and edible and pharmaceutical-grade white oil. [0003] The refining of white oil include...

Claims

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Application Information

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IPC IPC(8): C10G65/16
Inventor 罗继刚张笑剑
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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