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Hydrocracking isomerization catalyst as well as preparation method and application thereof

A hydrocracking and catalyst technology, applied in the field of catalysis, can solve the problems of low selectivity of jet fuel components, poor catalyst stability, and high catalyst reaction temperature, and achieves improved reaction rate and catalytic activity, mild reaction, and high utilization rate of raw materials. Effect

Active Publication Date: 2020-09-25
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the fact that most of the existing hydrogenation catalysts use noble metals, and the reaction temperature of the catalyst is high, the selectivity of jet fuel components is low, and the stability of the catalyst is poor etc., the present invention provides a highly active hydrocracking isomerization catalyst and preparation method, as well as its application in long-chain alkane hydrocracking isomerization

Method used

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  • Hydrocracking isomerization catalyst as well as preparation method and application thereof
  • Hydrocracking isomerization catalyst as well as preparation method and application thereof
  • Hydrocracking isomerization catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: Hydrocracking and isomerization catalyst used for hydrocracking and isomerization of palm oil hydrodeoxygenation products

[0053] The reaction raw material is palm oil hydrodeoxygenation product, that is, palm oil is hydrodeoxygenated with hydrodeoxygenation catalyst, space velocity is 1h, reaction temperature is 350℃, hydrogen-oil ratio is 1333, reaction pressure is 5MPa, and hydrogenation is obtained. Deoxygenation products are C5-C14, C15-C18, water, and gas phase products (CO, CH 4 ,C 2 H 5 ,C 3 H 6 ); Separate the C15-C18 product and use it as a hydrocracking isomerization reaction raw material for reaction, wherein the mass ratio of the raw alkane mixture C15, C16, C17, and C18 is 20%, 11%, 47%, 22%.

[0054] Among them, the hydrodeoxygenation catalyst can be an existing hydrodeoxygenation catalyst, such as the hydrodeoxygenation catalyst involved in patent number CN 104525247B. Then use the hydrocracking isomerization catalyst prepared above, adjust the re...

Embodiment 2

[0055] Example 2: Hydrocracking and isomerization catalyst used in the hydrocracking and isomerization of castor oil hydrodeoxygenation products

[0056] The raw material for the reaction is castor oil hydrodeoxygenation product, that is, palm oil is hydrodeoxygenated with hydrodeoxygenation catalyst, space velocity is 1h, reaction temperature is 350℃, hydrogen-oil ratio is 1333, reaction pressure is 5MPa, and hydrogenation is obtained. Deoxygenation products are C5-C14, C15-C18, water, and gas phase products (CO, CH 4 ,C 2 H 5 ,C 3 H 6 ); The C15-C18 product is separated and used as a raw material for hydrocracking isomerization reaction, wherein the mass ratio of the raw alkane mixture C15, C16, C17, and C18 is 7%, 6%, 47%, and 40%.

[0057] The hydrodeoxygenation catalyst can be the same as in Example 1, and then the hydrocracking isomerization catalyst prepared above is used to adjust the reaction temperature to the desired temperature, and the hydrogen pressure in the reaction ...

Embodiment 3

[0058] Example 3: Hydrocracking isomerization catalyst used for hydrocracking isomerization of palmitoleate hydrodeoxygenation product

[0059] The reaction raw material is the product of methyl palmitoleate hydrodeoxygenation. The reaction system is the same as that of Example 1 or Example 2. The mass ratio of the raw material alkane mixture C15, C16, C17, C18 is 15%, 18%, 45%, twenty two%.

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Abstract

The invention relates to a composite carrier of an alumina-coated molecular sieve, a hydrocracking isomerization catalyst, and a preparation method and application thereof. Firstly, a molecular sieveis subjected to an amino acid pore broadening treatment; then the molecular sieve is sulfonated, the sulfonated molecular sieve is added into an alcohol-water solution containing hexadecyl trimethyl ammonium bromide, an aluminum source and urea are added, and then crystallizing, washing, drying, and roasting are performed to obtain the composite carrier, which has abundant pores and abundant acidic sites, thereby enhancing the hydro-isomerization performance. Pt, Pd, Ni and Co are used as main active metals; Na, K, Be, Mg, Ca, Sr, Cr, Mn, Fe, Cu and Zn are used as auxiliary metals; and the auxiliary metals can enhance the dispersity of the active metals, can selectively cover and inhibit the acidic sites of the molecular sieve, play a key role in hydrogenation activity, and have higher activity in the aspect of preparation of biofuel from long-chain alkane through hydro-isomerization.

Description

Technical field [0001] The invention belongs to the technical field of catalysis, and particularly relates to a hydrocracking isomerization catalyst and a preparation method and application thereof. Background technique [0002] In recent decades, the concentration of pollutants in the atmosphere has increased considerably, especially greenhouse gases that cause climate change. Carbon dioxide emissions mainly come from power generation and transportation. In the next three decades, the carbon dioxide emissions caused by transportation will increase from 16% to 79%. In recent years, the international air transport volume in the transportation sector has doubled, while road transport volume has increased by 50%. Aviation kerosene and diesel are the main fuels needed for the growth of the transport sector. Therefore, the development of efficient, sustainable and renewable aviation fuel processes is particularly important. Bio-aviation fuel is recognized by the International Air Tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J29/40B01J29/85B01J29/18B01J29/70B01J29/08B01J29/46B01J29/24B01J29/76B01J29/14B01J37/10C10G45/60C10G45/64
CPCB01J29/084B01J29/40B01J29/85B01J29/18B01J29/7007B01J29/46B01J29/24B01J29/7615B01J29/146B01J37/10C10G45/60C10G45/64C10G2400/02C10G2400/04B01J2229/20Y02P30/20
Inventor 李伟魏炯刘思阳关庆鑫
Owner NANKAI UNIV
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