Hydrogenation catalyst composition and preparation method thereof

A technology of hydrogenation catalyst and composition, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of active metal aggregation, inhomogeneous reaction environment, no Activity and other issues

Active Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many deficiencies in the preparation process of the catalyst. Firstly, the reaction environment in the process of neutralization and gelation is not uniform, the particle size of the prepared alumina particles is small, and the crystallinity is not high; secondly, the catalyst preparation process adopts multiple roasting processes, which makes the operation process complicated. , and high-temperature calcination can easily cause the loss of specific surface area and pore volume of the catalyst, making the pore structure of the catalyst unsatisfactory; moreover, calcination of the catalyst at high temperature can easily cause the aggregation of active metals and form inactive nickel-aluminum spinel, thus affecting the performance of the catalyst. activity and many other issues
[0005] CN101927197A relates to a hydrogenation catalyst and a preparation method in which the concentration of active metals and acidic additives is distributed in a gradient-decreasing manner. By preparing a relatively concentrated active metal solution and acidic additive solution, deionized water or ammonia water is gradually added during the impregnation of the carrier The method of diluting

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  • Hydrogenation catalyst composition and preparation method thereof
  • Hydrogenation catalyst composition and preparation method thereof
  • Hydrogenation catalyst composition and preparation method thereof

Examples

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Example Embodiment

[0060] Example 1

[0061] This example introduces the preparation method of Mo, Ni, P active metal salt solution. In this example, only one concentration and proportion of Mo, Ni, P active metal salt solutions are prepared, and solutions of other proportions and concentrations can be prepared according to the described method.

[0062] Take 386g of molybdenum oxide and 123g of basic nickel carbonate into a multi-necked flask, add a certain amount of deionized water, stir until the material in the bottle is in slurry shape, then slowly add 86g of phosphoric acid, and then slowly heat after the initial reaction. , keep the solution temperature at 90-110°C for 1-3 hours, stop heating, filter the obtained solution while hot, and then add phosphoric acid to adjust the pH of the solution to 1.0-4.0 to obtain a clear dark green original solution. The solution composition is MoO3: 69.27g / 100ml; NiO: 12.49g / 100ml.

[0063] Take 296g of ammonium molybdate and 105g of nickel nitrate in...

Example Embodiment

[0065] Example 2

[0066] Add bottom water to the bottom of the impinging flow reactor, and heat it to 90°C; start the impinging flow reactor, and adjust the frequency of the ultrasonic generator to 20 kHz. Adjust the impact direction of the two accelerating tubes to strike horizontally, and start the accelerator to add AlCl with a concentration of 45g / 100mL. 3 The solution was injected from the feed port I at a flow rate of 15L / h, and the liquid was atomized through the pressure atomizing nozzle and the acceleration pipe at the level of the feed port II was sprayed through the pressure atomizing nozzle. The concentration injected at the flow rate of 20L / h 40g / 100mL of NaAlO 2 The solutions collided with each other, reacted for 30min, and stopped injecting the liquid and the bottom ultrasonic generator; at the same time, the feed ports III and IV at both ends of the liquid-liquid reactor II were simultaneously added with NaAlO at 15L / h. 2 (concentration is 20g / 100ml), Na 2 ...

Example Embodiment

[0067] Example 3

[0068] Add bottom water to the bottom of the impinging flow reactor and heat it to 90°C; start the impinging flow reactor and adjust the frequency of the ultrasonic generator to 30 kHz. Adjust the impact direction of the two accelerating tubes to strike horizontally, and start the accelerator to add AlCl with a concentration of 50g / 100mL. 3 The solution is injected from the feed port I at a flow rate of 25L / h, and the liquid is atomized through the pressure atomizing nozzle and the acceleration pipe at the level of the feed port II is sprayed through the pressure atomizing nozzle. The concentration injected at the flow rate of 20L / h 48g / 100mL of NaAlO 2 The solutions collided with each other, reacted for 25min, and stopped injecting the liquid and the bottom stirrer; at the same time, NaAlO was continuously added at the feed ports III and IV at both ends of the bottom of the impacting flow reactor at 16L / h. 2 solution (35g / 100mL) and AlCl 3 Solution (conc...

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Abstract

The invention discloses a hydrogenation catalyst composition and a preparation method thereof. The hydrogenation catalyst composition comprises an aluminum oxide carrier, an active metal and an auxiliary agent, wherein the active metal is selected from one or more of VIII family and/or VIB family metallic elements, and the auxiliary agent is selected from one or two of silicon or zirconium; the concentration of silicon and/or zirconium in the catalyst, in the form of oxides, are gradually increased from centers to outer surfaces of catalyst particles, wherein the concentration of silicon and/or zirconium at a position of 1/3R of particles is 0.1-0.5wt%, the concentration of silicon and/or zirconium at a position of 2/3R is 0.5-1.0wt%, the concentration of silicon and/or zirconium at a position of R is 1.0-3.0wt%, and R is the semi-diameter of the catalyst particles by taking the center of the catalyst as an initial point. The catalyst prepared by adopting an impinging stream co-precipitation gel forming mode in the invention is centralized in particle size distribution, and has an ideal pore structure, and the auxiliary agent and the active metal are distributed in the catalyst in a gradient increase mode, so that the deactivation rate of the catalyst can be effectively reduced, and the desulfurization and denitrification capacities of the catalyst are improved.

Description

technical field [0001] The invention relates to a hydrogenation catalyst composition and a preparation method thereof, in particular to a hydrogenation catalyst composition with a gradient distribution of the concentration of auxiliary agents and active metals and a preparation method thereof. Background technique [0002] Crude oil and distillates derived from crude oil contain impurities such as sulfur, nitrogen, oxygen and metals. The presence of these impurities not only affects the stability of the oil, but also emits SO during use X , NO X and other harmful gases pollute the environment. During the secondary processing of oil, the presence of impurities such as sulfur, nitrogen, oxygen and metals can poison the catalyst. Therefore, the removal of the above impurities is an important process in oil processing. Distillate hydrotreating refers to the process of contacting raw oil and hydrogen with catalyst under certain temperature and pressure to remove impurities an...

Claims

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Application Information

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IPC IPC(8): B01J23/883C10G45/08
Inventor 吕振辉彭绍忠高玉兰张学辉徐黎明佟佳
Owner CHINA PETROLEUM & CHEM CORP
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