Process for preparing high-viscosity technical white oil

A technology for industrial white oil and production method, which is applied in refining to remove heteroatoms and other directions, can solve the problems of high production pressure, long process flow, complicated operation, etc., and achieves concentrated pore distribution, simple preparation method and low preparation cost. Effect

Active Publication Date: 2012-05-30
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual production pressure is high, the process is long, and the operation is complicated

Method used

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  • Process for preparing high-viscosity technical white oil
  • Process for preparing high-viscosity technical white oil
  • Process for preparing high-viscosity technical white oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Titanium dioxide slurry preparation

[0016] Measure 300ml of deionized water, use undiluted ammonia water to adjust the pH value to 8.5, then add 100g of titanium dioxide powder to mix and add to the ball mill, use the above ammonia water to control the pH value of the slurry between 8 and 10. Grind at 25°C for 24 hours and seal it for later use.

[0017] (2) Preparation of dipping solution

[0018] Measure 300ml of deionized water, adjust the pH value to 8.5-10 with undiluted ammonia water, add 150g of ammonium molybdate, stir for 10-15min to fully dissolve, add 25ml of phosphoric acid, add citric acid to adjust the pH value to 6-7.5, then add anhydrous carbonic acid 400g of nickel is fully dissolved, sealed and set aside.

[0019] Get 150g of dried silica-alumina xerogel, 25g of alumina solid powder, 7.5ml of nitric acid, 5ml of citric acid, 7g of scallop powder, 50ml of prepared titanium dioxide slurry, appropriate amount of deionized water kneading, molding (...

Embodiment 2

[0022] 100g dried silica-alumina xerogel, 25g aluminum oxide solid powder, 3.5ml nitric acid, 2.5ml citric acid, 5g scallop powder, get embodiment 1 titanium dioxide slurry 35ml, deionized water kneads in right amount, molding (clover), then in Dry at 120°C for 24 hours, and then bake at 450-550°C for 5.5 hours to obtain a catalyst carrier without active metal. Take 75 ml of the impregnating solution prepared in Example 1 and add an appropriate amount of deionized water to dilute and impregnate the catalyst C-2 calcined at 450-550° C. for 4 hours. The catalyst properties are shown in Table 2, and the evaluation results are shown in Table 3.

[0023] Using the catalyst prepared above, the process conditions: reaction temperature 200, reaction hydrogen partial pressure 4.0MPa, liquid volume space velocity 0.3h -1 1. Hydrogenation of HVIH350 (raw material 2) base oil under the condition of hydrogen oil volume ratio of 200 produces 68# industrial white oil.

Embodiment 3

[0025] 100g dried silica-alumina xerogel, 30g aluminum oxide solid powder, 4.5ml nitric acid, 5ml citric acid, 4.5g scallop powder, get embodiment 1 titanium dioxide slurry 40ml, deionized water kneads in right amount, molding (clover), then in Dry at 120°C for 24 hours, and then bake at 450-550°C for 5.5 hours to obtain a catalyst carrier without active metal. Take 60 ml of the impregnating solution prepared in Example 1 and add an appropriate amount of deionized water to dilute and impregnate the catalyst C-3 calcined at 450-550° C. for 4 hours. Catalyst properties are shown in Table 2.

[0026] Using the above catalyst in the process conditions: reaction temperature 280 ℃, reaction hydrogen partial pressure 6.0MPa, liquid volume space velocity 1.0h -1 1. Hydrogenation of HVIH400 (raw material 3) base oil under the condition of hydrogen oil volume ratio of 800 produces 68# industrial white oil. The quality analysis of industrial white oil is shown in Table 3

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Abstract

The invention relates to a high viscosity industrial white oil production method, which takes the catalytic cracking mesoplasm lube base oil as the raw material, anti-sulfur catalyst is adopted, the industrial white oil is generated through the first stage hydrogenation, the reaction temperature is 200 DEG C to 320 DEG C, the reaction hydrogen partial pressure is 4.0 MPa to 8.0 MPa, the liquid volume space velocity is 0.3 to 1.5 h-1, and the hydrogen oil volume rate is 200 to 1000; the catalyst carrier is SiO2-Al2O3 modified by TiO2, an active component takes the catalyst weight as the datum, the NiO content is 10 wt percent to 40 wt percent, the MoO3 content is 15 wt percent to 20 wt percent, the TiO2 content is 3 wt percent to 8 wt percent, the surplus is a SiO2-Al2O3 carrier, the catalyst active component content is low, the sulfur-resistant and nitrogen poisoning ability is high, the method is suitable for the impurities, such as sulfur, nitrogen and the like, and the mesoplasm lube base oil with a higher aromatics content, and the superior grade high viscosity industrial white oil is generated by adopting the first stage hydrogenation technology.

Description

technical field [0001] The invention relates to a method for producing high-viscosity industrial white oil by one-stage catalytic hydrogenation of hydrocracking medium lubricating oil base oil by using an anti-sulfur catalyst. Background technique [0002] The production process of white oil generally includes solvent acid-base refining, hydrogenation refining and other methods. Solvent acid-base refining is to react the white oil raw material with concentrated sulfuric acid (or sulfur trioxide) under certain conditions, absorb heterocyclic and polycyclic substances to form acid residue, and refine the reacted oil through alkali neutralization and extraction. Yield is 60~75% white oil product, because it produces a large amount of acid residues, waste water and other pollution and gradually eliminated. The production of white oil by hydrogenation is to remove the impurities and convert the heterocyclic and aromatic hydrocarbons in the raw materials into useful components. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/04
Inventor 邹士应曾佑富刘成林谭振明闫桂玲方义
Owner PETROCHINA CO LTD
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