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Preparation method for hydro-treating protecting agent

A technology for hydrotreating and protecting agent, applied in catalyst protection, chemical instruments and methods, catalysts for physical/chemical processes, etc., can solve problems such as reducing catalyst utilization rate, and achieve the effect of low wear rate and high strength

Inactive Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pore diameters of the alumina support are concentrated in the ranges of 6nm-35nm and 100nm-2000nm respectively, and there are many small and medium pores with a pore diameter <35nm, while there are fewer micron-sized pores, resulting in the deposition of Ca and Fe carried by heavy and residual oil on the catalyst. surface, reducing catalyst utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 17g of pseudo-boehmite dry rubber powder A, pulverize until 100% pass through 150 mesh, and 150g of pseudo-boehmite dry rubber powder B, pulverize until 100% pass through 50 mesh, mix the two thoroughly and add a concentration of 2 % (mass fraction) nitric acid aqueous solution 160mL, kneaded into a plastic body, shaped, dried at 100°C for 4 hours, then heated to 600°C at 200°C / hour in a roasting furnace, and kept at constant temperature for 5 hours to obtain carrier 1.

Embodiment 2

[0034] Weigh 66g of pseudo-boehmite dry rubber powder A, and crush until 100% passes through 150 mesh. Pseudoboehmite dry rubber powder B 100g, pulverized until 100% passed 50 mesh. After the two are thoroughly mixed, 160 mL of aqueous nitric acid solution with a concentration of 3.0% (mass fraction) is added, kneaded into a plastic body, shaped, dried at 120°C for 6 hours, and then heated to 700°C at 250°C / hour in a roasting furnace. The temperature was maintained for 4 hours to obtain carrier 2.

Embodiment 3

[0040] Weigh 7.5g of industrial ammonium heptamolybdate, put it in 95mL of ammonia water, stir until there is no insoluble matter, then add 4.2g of industrial nickel nitrate, stir until there is no insoluble matter, then add ammonia water to 100mL, and obtain a co-immersion liquid.

[0041] Take 100 g of the carriers prepared in Examples 1 and 2 and Comparative Examples 1 and 2, spray them evenly with 100 ml of the above-mentioned co-immersion solution, turn them over and shake them well, and then dry them at 100°C for 8 hours, then Raise the temperature at 180°C / h to 505°C and keep the temperature constant for 2 hours to prepare catalysts 1, 2, 3 and 4, respectively.

[0042] Prepared protective agent properties are shown in table 2:

[0043] Table 2 Physical properties of hydrotreating protective agent

[0044] Hydrotreating protectant

[0045] As can be seen from the above results, the hydrotreating protective agent prepared by the method of the present inventio...

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Abstract

The invention discloses a preparation method for a hydro-treating protecting agent. An alumina carrier in the method is prepared by kneading two kinds of different pseudo-boehmite dry colloid powder and loading an active metal, wherein the first pseudo-boehmite has relatively low crystallization degree and large pore volume and can provide pores with diameter of 30 to 100 nanometers; and the second pseudo-boehmite has relatively high crystallization degree and can provide pores of micron scale, the second pseudo-boehmite represents extremely hard blocks after drying due to high acidic index, and the crushed second pseudo-boehmite can completely pass through a 50-mesh sieve, so that the number of micro-scale pores can be increased, and the strength of the catalyst carrier can be improved. By adjusting the mixing proportion of the two kinds of pseudo-boehmite, the hydro-treating protecting agent with high strength, high stacking density, large pore volume and low abrasion rate can be prepared. The hydro-treating protecting agent is particularly suitable to be used as a heavy oil or residuum hydro-treating protecting agent.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation protecting agent, in particular to a method for preparing a hydrogenation protecting agent for heavy oil and residual oil. Background technique [0002] In recent years, the upgrading and utilization of heavy and residual oils have become the development focus of today's oil refining industry, and more and more attention has been paid to them. One of the keys to heavy and residual oil hydrogenation technology is to develop catalysts with excellent performance. The performance of the catalyst not only depends on the active components, but also has a close relationship with the pore structure of the catalyst. The function of the heavy and residual oil hydrogenation protection agent is not only to make the Ca, Fe, V and scale carried by the heavy and residual oil penetrate into the catalyst particles and deposit them, but also to deposit some metal impurities such as vanadium and nickel, the...

Claims

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Application Information

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IPC IPC(8): B01J35/10B01J23/883B01J33/00
Inventor 刘喜来王刚隋宝宽张成
Owner CHINA PETROLEUM & CHEM CORP
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