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Crude octanol liquid phase hydrogenation catalyst and preparation method thereof

A liquid-phase hydrogenation and catalyst technology, which is applied in the directions of heterogeneous catalyst chemical elements, chemical instruments and methods, and hydroxyl compound preparation, can solve problems such as the treatment of waste catalysts for catalytic cracking that is not mentioned, and achieve good economic benefits and social benefits. Benefit, improved purity and color, high hydrogenation activity

Active Publication Date: 2020-04-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in a method for reusing spent catalytic cracking catalysts disclosed in Chinese patent application CN106140296A, fresh catalytic cracking catalysts are prepared by in-situ crystallization using spent catalytic cracking catalysts as the main source of aluminum and part of the silicon source. However, this document does not mention how to treat the spent catalytic cracking catalyst to make it suitable as a carrier for crude octanol liquid-phase hydrogenation catalyst

Method used

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  • Crude octanol liquid phase hydrogenation catalyst and preparation method thereof
  • Crude octanol liquid phase hydrogenation catalyst and preparation method thereof
  • Crude octanol liquid phase hydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] CD002 (taken from Sinopec Catalyst Qilu Branch in 2017, containing about 37% (m / m) SiO 2 , about 53% (m / m) Al 2 o 3 , the balance is iron, nickel, vanadium, sodium, etc., which can be washed off by acid) The waste agent is soaked and washed with 30% nitric acid for 2 hours, taken out and drained, and roasted to remove carbon deposits. The roasting temperature is 500 ° C, and the roasting time is 2 hours. The final waste agent is crushed through a 140 mesh sieve.

[0033] Weigh a certain amount of nickel nitrate, add water to dissolve, and adjust the pH value with nitric acid to configure a 3.7mol / L nickel nitrate solution with a pH value of 1.2.

[0034] Vector preparation:

[0035]Mix 35g of the roasted waste catalytic cracking catalyst, 8.75g of alumina glue, 1.2g of turnip powder and 1mL of nitric acid, the pH value of the mixed material is measured as 4, add 10mL of water and knead evenly; then extrude into strips, Dry at 120°C for 6 hours, and then roast. The r...

Embodiment 2

[0040] Soak and wash CD002 waste agent (taken from Sinopec Catalyst Qilu Branch in 2017) with 35% nitric acid for 10 hours, take it out and drain, and roast to remove carbon deposits. The roasting temperature is 700°C and the roasting time is 10 hours. The powder was crushed through a 160 mesh sieve.

[0041] Weigh a certain amount of nickel nitrate, add water to dissolve, and adjust the pH value with nitric acid to prepare a 0.5 mol / L nickel nitrate solution with a pH value of 2.5.

[0042] Vector preparation:

[0043] Mix 78g of roasted waste catalytic cracking catalyst, 17g of alumina glue, 1.5g of scallop powder and 1mL of nitric acid, the pH value of the mixed material is measured as 3, add 29mL of water and knead evenly; Dry at 120°C for 4h, and bake at 1100°C for 2h to prepare the carrier. The alumina glue used has a specific surface area of ​​305m 2 / g.

[0044] Catalyst preparation:

[0045] Spray 68mL of the above-mentioned nickel nitrate solution on the carrier...

Embodiment 3

[0048] Soak CD002 waste agent (taken from Sinopec Catalyst Qilu Branch in 2017) with nitric acid with a concentration of 10% for 10 hours, take it out and drain, and roast to remove carbon deposits. The roasting temperature is 550 ° C and the roasting time is 4 hours. The agent was crushed through a 120 mesh sieve.

[0049] Weigh a certain amount of nickel nitrate, add water to dissolve, and adjust the pH value with nitric acid to prepare a 2 mol / L nickel nitrate solution with a pH value of 2.5.

[0050] Vector preparation:

[0051] Mix 62g of the roasted waste catalytic cracking catalyst, 13g of alumina glue, 1.5g of turnip powder and 0.8mL of nitric acid, the pH value of the mixed material is measured to be 3.5, add 22mL of water and knead evenly; then extrude into strips, The carrier was obtained after drying at 120°C for 4h and calcining at 1050°C for 3h. The alumina glue used has a specific surface area of ​​315m 2 / g.

[0052] Catalyst preparation:

[0053] Spray 85...

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Abstract

The invention belongs to the field of hydrogenation, and particularly relates to a catalyst for liquid phase hydrogenation of crude octanol (containing isooctanol, octenol, octenal, other unsaturatedlight components and unsaturated heavy components) through a fixed bed reactor and a preparation method. The catalyst provided by the invention contains 5-45wt.% of NiO and the balance of SiO2 and Al2O3 as main components, and the mass ratio of Al2O3 to SiO2 is 1.35-2.5 (mass ratio); wherein more than 95% of pores in the catalyst are mesopores, pores of 6-8nm are mainly used, and the specific porevolume of the catalyst is more than or equal to 0.42 cm < 3 > / g. The catalyst has a proper pore structure, is beneficial to hydrogenation reaction of aldehydes, and is wide in range of adapting to process conditions and high in hydrogenation activity; according to the preparation method, the preparation cost of the catalyst is greatly reduced, an effective way is found for comprehensive utilization of a waste catalytic cracking catalyst, and good economic benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the field of hydrogenation. Specifically, the invention relates to a method of passing crude octanol (containing isooctyl alcohol, octenol, octenal, and other unsaturated light components and unsaturated heavy components) through A catalyst for liquid-phase hydrogenation in a fixed-bed reactor and a preparation method thereof. Background technique [0002] Butanol is an important organic chemical raw material, which can be divided into three types: n-butanol, isobutanol, and octanol (2-ethylhexanol). [0003] Butanol production processes include: acetaldehyde condensation method, fermentation method, Ziegler method and oxo synthesis method, etc. The acetaldehyde condensation method has been eliminated; the cost of the fermentation method depends on the price of grain or starchy agricultural products; the Ziegler method uses ethylene as a raw material to produce higher fatty alcohols, and butanol is its by-product. [0004] Ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/10C07C29/90C07C31/125
CPCB01J23/755C07C29/90B01J2523/00B01J35/615B01J35/633B01J35/647B01J2523/31B01J2523/41B01J2523/847C07C31/125
Inventor 王昊白志敏余汉涛何宗华薛红霞姜建波齐焕东梁卫忠宋晓军
Owner CHINA PETROLEUM & CHEM CORP
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