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Deeply hydrodearomatized catalyst and preparation method

A technology of deep hydrogenation and catalyst, which is applied in the direction of chemical instruments and methods, hydrogenation refining of aromatics, metal/metal oxide/metal hydroxide catalyst, etc. Suitable for deep hydrodearomatization process, weak acidity and other problems, to achieve the effect of improving anti-pollution ability

Active Publication Date: 2012-08-08
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent applications CN1769379A, CN1140748A, and CN1070215A all involve conventional metal catalysts for hydrogenation processes. The catalyst has a disadvantage of low activity and cannot effectively solve the problem of deep dearomatization of lubricating oils; ZL98117511.2 and ZL90100187.2 all involve platinum-containing and palladium bimetallic noble metal hydrogenation catalysts, but due to the Al in these two catalyst supports 2 o 3 The content is relatively low, no more than 30% by weight, so the acidity of the catalyst is relatively weak, and it is only suitable for the hydrogenation process of light oil products and distillate oils, but not suitable for the deep hydrodearomatization process of heavy lubricating oil

Method used

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  • Deeply hydrodearomatized catalyst and preparation method
  • Deeply hydrodearomatized catalyst and preparation method
  • Deeply hydrodearomatized catalyst and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: This example illustrates the preparation of amorphous silica-alumina powder.

[0023] Aluminum chloride is added to distilled water, stirred until dissolved to obtain an aluminum-containing compound aqueous solution (a), and the concentration of aluminum ions in the solution is 2wt%; commercially available ammonia water is added into an appropriate amount of distilled water to dilute to obtain a precipitant with an ammonia ion concentration of 10wt% Solution (b): adding appropriate amount of distilled water to industrial water glass to dilute to obtain solution (c) with silicon dioxide content of 60 wt%.

[0024] Take a steel reaction tank, add distilled water and stir in the tank, after heating to 60°C, open the valves of the containers containing solutions (a) and (b) respectively, maintain the reaction temperature, control the flow rate, and make the pH of the reaction system The value is maintained at 7.0-7.2, and the neutralization reaction time is compl...

Embodiment 2～9

[0028]According to the experimental procedure of Example 1 and the raw materials and operating conditions shown in Table 1, powder F with different properties can be obtained 2 , F 3 , F 4 , F 5 , F 6 , F 7 , F 8 , F 9 ; The obtained powder properties are shown in Table 1.

[0029] Table 1 The physical and chemical properties of the powder obtained in Example 1

[0030]

Embodiment 10

[0031] Example 10: This example illustrates the shaping of the carrier.

[0032] The powder obtained in Example 1 has a total pore volume of 0.43ml / g and a surface area of ​​230m 2 The pseudo-boehmite (f) of / g is mixed evenly, and the addition of pseudo-boehmite is 15% of the weight of the molding carrier, and then 3% of the binder silica sol (g) of the weight of the molding carrier is added, after kneading Extrusion molding. After the mixed powder is kneaded and extruded, it is dried in the air atmosphere at 120°C for 5 hours, and then heated to 450°C for 6 hours to obtain the shaped carrier Z 1 , the properties of the obtained carrier are shown in Table 2.

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Abstract

The invention relates to a type of deeply hydrodearomatized catalyst and a preparation method. Slurry containing 1 percent to 5 percent by weight of aluminium ion, 40 percent to 60 percent by weight of silicon dioxide and 5 percent to 15 percent by weight of ammonium ion is prepared; the slurry is dried under the temperature of 100 DEG C to 200 DEG C; the produced powder is mixed with pseudo-boehmite with the total pore volume of 0.4ml / g to 0.45ml / g and the surface area of 200m2 / g to 240m2 / g, and the produced mixture is shaped, dried under the temperature of 100 DEG C to 150 DEG C and baked under the temperature of 450 DEG C to 530 DEG C, so that carrier is obtained; the aqua regia of Pt and Pd, the volume of which is equal to the water absorption capacity of the carrier, is added into the carrier, and the carrier is dried under the temperature of 80 DEG C to 120 DEG C and baked under the temperature of 450 DEG C to 480 DEG C, so that the catalyst is obtained; Pt accounts for 0.1 percent to 0.5 percent of the weight of the catalyst, and Pd accounts for 0.3 percent to 0.8 percent of the weight of the catalyst; and the catalyst can meet the requirement of the deep hydrodearomatization of naphthenic base oil with the viscosity from 8mm2 / s to 700mm2 / s under the temperature of 40 DEG C and from 2mm2 / s to 30mm2 / s under the temperature of 100 DEG C.

Description

technical field [0001] The invention relates to a hydrogenation refining process catalyst and a preparation method, in particular to a hydrogenation dearomatization catalyst and a preparation method. The catalyst is suitable for the hydrogenation process of aromatics, especially for the hydrogenation and decolorization of cycloalkyl high-viscosity white oil and solvent oil containing heavy aromatics. Background technique [0002] Under aerobic conditions, the oil produced by hydroprocessing is very sensitive to sunlight and ultraviolet radiation. Exposure to sunlight and air will cause the appearance and performance of the oil to be unstable, the color of the oil will deepen, and in severe cases, precipitation will occur. [0003] At present, naphthenic rubber oil products with good quality in China still have insufficient light and heat stability, and their yellowing resistance can only reach level 4, and cannot meet the requirements of level 5 without discoloration, so the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/42C10G45/52
Inventor 罗来龙胡宇辉于海滨马莉莉蔡烈奎熊春珠李效国
Owner PETROCHINA CO LTD
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