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Mo-Ni catalyst for C4 fraction low-temperature hydrogenation and its preparation method and use

A technology of hydrogenation catalyst and C4 fraction is applied in the field of catalyst and its preparation, and can solve the problems of complex, cumbersome and high cost of preparation process

Active Publication Date: 2012-10-17
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main purpose is to provide a cost-effective method for the existing catalysts or high hydrogenation temperature, or complex and cumbersome preparation process, or the use of noble metal palladium as the active component, high cost, and strict requirements on poisons such as sulfur and arsenic in raw materials. Catalysts with low, relatively simple manufacturing process and high low-temperature hydrogenation activity for C 4 Distillate Hydrosaturation

Method used

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  • Mo-Ni catalyst for C4 fraction low-temperature hydrogenation and its preparation method and use
  • Mo-Ni catalyst for C4 fraction low-temperature hydrogenation and its preparation method and use
  • Mo-Ni catalyst for C4 fraction low-temperature hydrogenation and its preparation method and use

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preparation example Construction

[0036] Catalyst preparation: Weigh a certain amount of molded γ-alumina carrier, use soluble salts of nickel and molybdenum to make a solution equal to the volume of the carrier, soak the carrier in the solution for a certain period of time at room temperature, pour The remaining soaking liquid is taken out, and after drying and roasting, the required catalyst is obtained.

[0037] Catalyst evaluation conditions: feed temperature 20-40°C, reaction temperature 20-105°C, reaction pressure 1.5-3.0MPa, volume liquid hourly space velocity 1.0-10.0h -1 , hydrogen / olefin molar ratio 1.02~1.2.

Embodiment 1

[0039] Weigh 20g (about 30ml) of the formed γ-alumina carrier I, 14.86g nickel nitrate and 5.52g ammonium molybdate to prepare a 30ml solution. The carrier was soaked in the mixed solution at room temperature for 12 hours, the remaining soaking solution was poured out, dried at 120°C, and then calcined at 350°C for 6 hours. The prepared catalyst was JH-1. In the same way, γ-alumina carriers II and III were made into catalysts JH-2 and JH-3, respectively.

[0040] Perform performance evaluation on JH-1, JH-2, and JH-3, and the evaluation results are shown in Table 1.

[0041] Catalyst performance prepared by different supports in table 1

[0042]

Embodiment 2

[0044] Weigh 30g (about 45ml) of the formed γ-alumina carrier III, 22.29g nickel nitrate, and 8.28g ammonium molybdate to prepare a 45ml solution. Soak the carrier in the solution for 12 hours at room temperature, and pour off the remaining soaking solution. After drying at 125°C, it was divided into three parts and fired at 375°C, 400°C, and 500°C for 6 hours respectively. The prepared catalysts are JH-4, JH-5 and JH-6.

[0045] Evaluate JH-4, JH-5, JH-6, and compare with JH-3 evaluation results, the evaluation results are shown in Table 2.

[0046] Catalyst performance prepared by different calcination temperatures in table 2

[0047]

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Abstract

The invention discloses a Mo-Ni catalyst for C4 fraction low-temperature hydrogenation and its preparation method and use. The Mo-Ni catalyst for C4 fraction low-temperature hydrogenation adopts gamma-Al2O3 as a carrier, contains main active ingredients of Mo and Ni and is prepared by a co-impregnation or stepwise impregnation method. The Mo-Ni catalyst for C4 fraction low-temperature hydrogenation comprises: by weight, 8.0 to 25.0% of Mo2O3, 6.0 to 25.0% of NiO and 60 to 80% of gamma-Al2O3 as a carrier, and has a specific surface area of 120 to 200m<2> / g. The Mo-Ni catalyst for C4 fraction low-temperature hydrogenation is especially suitable for C4 fraction low-temperature hydrogenation and does not need prevulcanization before use. In a heat insulation or tubular fixed bed reactor, a reaction temperature is in a range of 25 to 105 DEG C; reaction pressure is in a range of 1.5 to 3.0MPa; a liquid hourly space velocity is in a range of 1.0 to 6.0h<-1>; and a hydrogen / olefin mole ratio is in a range of 1.02 to 1.2. Aiming at C4 fractions having various olefin content values, the Mo-Ni catalyst for C4 fraction low-temperature hydrogenation can realize that olefin content after hydrogenation is less than 1%.

Description

technical field [0001] The invention relates to a catalyst for olefin hydrogenation saturation and a preparation method thereof, especially a catalyst for C 4 Mo-Ni catalyst for low-temperature hydrogenation of fractions, its preparation method and application. Background technique [0002] A large amount of C 4 Hydrocarbons, C of most domestic enterprises 4 Hydrocarbons are sold as liquefied gas, and the chemical utilization rate is not high. [0003] Ethylene is the basic raw material of petrochemical industry. At present, domestic ethylene production capacity is increasing rapidly. In ethylene production, raw material costs account for 60-80% of production costs. At present, ethylene production is mainly based on steam cracking of hydrocarbon raw materials, and the cracking raw materials mainly include ethane, LPG, raffinate, naphtha, hydrogenated tail oil, etc. The heavier the ethylene cracking raw material, the more by-products, the greater the material handling ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883C07C9/10C07C5/03
Inventor 李明玉马颖涛闫雨李军张丽梅
Owner CHINA PETROLEUM & CHEM CORP
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