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Catalyst for preparing gasoline blending component through alcohol-naphtha coupling, preparation method and application thereof

A naphtha and catalyst technology, which is applied in the field of catalysts for preparing gasoline, can solve the problems of low added value, restricting the development of naphtha aromatization, low yield of modified gasoline and the like, and achieves the effect of improving the yield

Active Publication Date: 2018-04-24
SINOPEC ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the prior art, whether it is fixed bed or moving bed naphtha aromatization upgrading technology, there are low yields of modified gasoline, no desulfurization function, resulting in excessive sulfur content, and cannot be used as a blending component of clean gasoline fuel , low cycloalkane dehydrogenation activity, low conversion rate, etc.
Moreover, because in the process of naphtha aromatization modification, whether it is isoparaffins with high octane number or n-paraffins with low octane number, they must go through cracking, oligomerization, cyclization, dehydrogenation and hydrogenation. Alkanes and aromatics with high octane number can only be generated through processes such as transfer, while in the prior art there is no cracking ability and isomerization ability of low-carbon alkanes, a large amount of by-product liquefied petroleum gas and fuel gas with low added value, and methanol has not been obtained. Reasonable utilization and other deficiencies greatly limit the development of naphtha aromatization

Method used

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  • Catalyst for preparing gasoline blending component through alcohol-naphtha coupling, preparation method and application thereof
  • Catalyst for preparing gasoline blending component through alcohol-naphtha coupling, preparation method and application thereof
  • Catalyst for preparing gasoline blending component through alcohol-naphtha coupling, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Component A1 of this example is SAPO-11 molecular sieve modified by tin and nickel, wherein the mass fractions of nickel and tin in component A are 5% and 2%, respectively.

[0054] The preparation method of described component A1 is as follows:

[0055] Weigh 24.8g of nickel nitrate hexahydrate and dissolve it in 120g of deionized water to obtain a nickel nitrate solution for subsequent use. Mix 100g of SAPO-11 molecular sieve powder with 2.53g of tin oxide, add to the prepared nickel nitrate solution, soak at 60-100°C for 4h, then dry at 110°C for 4h, then dry at 500°C Calcined under air atmosphere for 5h to obtain the active component A1 of the catalyst for use.

Embodiment 2

[0057] Component A2 of this example is SAPO-11 molecular sieve modified by tin and nickel, wherein the mass fractions of nickel and tin in component A are 7.5% and 3%, respectively.

[0058] The preparation method of described component A2 is as follows:

[0059] Weigh 35.4g of nickel nitrate hexahydrate and dissolve it in 130g of deionized water to obtain a nickel nitrate solution for subsequent use. Mix 100g of SAPO-11 molecular sieve powder with 3.8g of tin oxide, add it to the prepared nickel nitrate solution, soak it at 60-100°C for 4h, then dry it at 110°C for 4h, and then dry it at 500°C Calcined for 5 hours under an air atmosphere to obtain active component A2 of the catalyst for use.

Embodiment 3

[0061] Component A3 of this example is SAPO-11 molecular sieve and MgAPO-11 molecular sieve modified by tin and nickel, wherein the mass fractions of nickel and tin in component A are 10% and 4%, respectively.

[0062] The preparation method of described component A3 is as follows:

[0063] Weigh 49.5g of nickel nitrate hexahydrate and dissolve it in 130g of deionized water to obtain a nickel nitrate solution for subsequent use. Mix 50g of SAPO-11 molecular sieve powder and 50g of MgAPO-11 molecular sieve powder with 5.1g of tin oxide, add to the prepared nickel nitrate solution, soak at 60-100°C for 4h, and then bake at 110°C Dry for 4 hours, and then calcined at 500°C for 5 hours in an air atmosphere to obtain the active component A3 of the catalyst for use.

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Abstract

The invention relates to the technical field of catalysts for preparing gasoline, in particular to a catalyst for preparing a gasoline blending component through alcohol-naphtha coupling, a preparation method and application thereof. The catalyst comprises a metal modified molecular sieve, a rare earth element modified molecular sieve, one or multiple active components like platinum, palladium, tin and rhenium loaded on a carrier and two or three active components like nickel, molybdenum and tungsten. The catalyst has functions of isomerization, naphthene dehydrogenation, cracking, alkylation,aromatization and desulfurization and can effectively increase gasoline yield and octane value of gasoline and lower sulfur content.

Description

technical field [0001] The invention relates to the technical field of catalysts for preparing gasoline, in particular to a catalyst for preparing gasoline blending components by coupling alcohol naphtha, a preparation method and an application thereof. Background technique [0002] Naphtha mainly refers to oilfield condensate, straight-run gasoline, hydrocoking gasoline and reforming raffinate, etc. The traditional use of naphtha is based on its structure and composition as a raw material for catalytic reforming and steam cracking to produce ethylene. Generally, when naphtha contains relatively high aromatics and naphthenes, naphtha is suitable as a raw material for catalytic reforming to produce aromatics or high-octane gasoline; when naphtha contains relatively high paraffins, Naphtha is suitable as raw material for steam cracking to produce ethylene. [0003] In recent years, with the effective development of natural gas, light hydrocarbons such as ethane are used as r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J29/00B01J37/02B01J37/08C10G3/00
CPCB01J29/005B01J29/088B01J29/166B01J29/405B01J29/48B01J29/7049B01J29/7057B01J29/7088B01J29/80B01J29/84B01J29/85B01J37/0201B01J37/08C10G3/49C10G2300/305C10G2400/02Y02P30/20
Inventor 魏小波
Owner SINOPEC ENG GRP CO LTD
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