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Coal tar hydrogenating modification catalyst and its prepn and application

A hydrogenation modification and catalyst technology, applied in tar processing, petroleum industry, refined hydrocarbon oil, etc., can solve the problem of low activity, achieve strong aromatics saturation and ring-opening ability, good stability and mechanical strength, good The effect of hydrodesulfurization

Inactive Publication Date: 2006-05-17
LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a coal tar distillate oil hydrotreating catalyst and its preparation method and application. The catalyst of the present invention overcomes the shortcomings of existing distillate oil hydrotreating catalysts such as low activity, and it not only has suitable pore volume, pore diameter, Hydrogen centers and acid centers, and have good mechanical strength and water resistance. Under hydrogenation conditions, impurities such as sulfur, nitrogen, colloids and asphaltenes in coal tar fractions can be effectively removed, saturated aromatic components and some Aromatic ring opening

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add zirconium nitrate to deionized water at room temperature to make a solution. The composition of the solution is: 5g zirconium nitrate / 50ml. Add Y-type molecular sieves to the solution, and add 25g molecular sieves to the 50ml solution. Stir evenly, let stand at room temperature for 10 hours, and then dry it at 80°C. The drying time is 8 hours. Take it out, grind it, and pass through a 100-mesh sieve.

[0021] Mix 150g of pseudo-boehmite, 60g of silica sol, and 25g of modified Y-type molecular sieve evenly, then add 4g of scallop powder, appropriate amount of nitric acid, deionized water, etc., and knead to form. Drying is carried out at a temperature of 90° C., and the drying time is 8 hours. After that, it is fired at a temperature of 600°C. The calcination time is 4 hours, and the carrier is made. Its shape is cylindrical. Put the molded carrier into the treatment furnace, at 800°C, the water vapor space velocity is 6h -1 Under certain conditions, water va...

Embodiment 2

[0023] Add ammonium dihydrogen phosphate to deionized water at room temperature to make a solution. The composition of the solution is: 10g ammonium dihydrogen phosphate / 50ml. Add Y-type molecular sieves to the solution, and add 25g molecular sieves to the 50ml solution. Stir well, stand at room temperature for 4 hours, and then dry it at 140°C. The drying time is 4 hours. Take it out, grind it, and pass through a 140-mesh sieve.

[0024] Mix 150g of pseudo-boehmite, 60g of silica sol, and 25g of modified Y-type molecular sieve evenly, then add 5g of scallop powder, an appropriate amount of nitric acid, deionized water, etc., and knead to form it. Drying is carried out at a temperature of 120° C., and the drying time is 6 hours. After that, it is fired at a temperature of 500°C. The calcination time is 10 hours, and the carrier is made. Its shape is clover-shaped. Put the molded carrier into the treatment furnace, at 600°C, the water vapor space velocity is 4h -1 Under...

Embodiment 3

[0026] Add ammonium metatungstate and nickel nitrate into deionized water, and the solution composition is 80g ammonium metatungstate / 100ml, 30g nickel nitrate / 100ml. Immerse 100g of carrier A in 200ml of the above solution, soak at 15°C for 2h, filter and let stand at room temperature for 2h, then dry at 110°C for 8h, and then calcined at 460°C for 10h to prepare catalyst A1. Its properties are shown in Table 1.

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PUM

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Abstract

The coal tar hydrogenating modification catalyst consists of carrier and active component. The active component is the mixture of WO3, MoO3 and NiO, or the mixture of WO3 and NiO and accounts for 29-35 wt% of the catalyst; and the carrier consists of silica, alumina and modified type-Y molecular sieve, which is modified with zirconium nitrate and / or ammonium salt of phosphorus in the amount of 1-10 wt% of the modified molecular sieve, and accounts for 65-71 wt% of the catalyst. The catalyst has proper pore volume, pore size, hydrogenating center and acid center, relatively high mechanical strength and water resistance. Using the catalyst in hydrogenating modification of coal tar friction oil can eliminate its impurity S, N, gum, asphaltene and saturated arene component and open ring of partial arene.

Description

technical field [0001] The invention belongs to a catalyst for the hydrogenation process of distillate oil, and relates to a catalyst for hydrogenation and upgrading of coal tar fraction and its preparation method and application. Background technique [0002] Coal tar is a by-product of high-temperature thermal cracking of coal. Its liquid product has the characteristics of natural crude oil, but compared with ordinary crude oil, it has high density, high viscosity, high sulfur content, especially high nitrogen content, high residual carbon, and asphaltenes. High, so the quality is poor and more difficult to process. With the increasing consumption of petroleum resources worldwide and the increase in the proportion of domestic imported crude oil year by year, how to rationally use coal tar, a petroleum substitute, to obtain high-quality fuel oil and other chemical raw materials has attracted more and more attention. [0003] At present, some domestic coal tar production en...

Claims

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Application Information

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IPC IPC(8): C10G45/12C10C1/00
Inventor 霍宏敏黄新龙秦如意赵晓青刘金龙王洪彬胡艳芳赵智刚
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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