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C4 alkylation catalyst and method for preparing high-octane gasoline through C4 alkylation

A high-octane gasoline and carbon tetraalkyl technology, which is applied in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of increasing catalyst costs and improve activity and anti-carbon deposition performance , Strong anti-carbon deposition ability, high dispersion effect

Pending Publication Date: 2022-05-20
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of the above technologies use precious metals, which increases the cost of the catalyst

Method used

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  • C4 alkylation catalyst and method for preparing high-octane gasoline through C4 alkylation
  • C4 alkylation catalyst and method for preparing high-octane gasoline through C4 alkylation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of directing agent

[0029] Add 2.3g of sodium hydroxide, 1.4g of pseudo-boehmite and 11.9g of deionized water into the beaker, stir to dissolve completely, add 12.6g of sodium silicate solution, stir vigorously, seal and age for 24 hours to obtain a directing agent solution ;

[0030] (2) Preparation of Mo modified Y molecular sieve

[0031] Add 6.3g of molybdenum cyclohexanoate into 50.0g of cyclohexane, and stir evenly after dissolving to form an organic solution containing molybdenum;

[0032] 63.7g sodium hydroxide, 82.9g sodium aluminate and 890g silica sol (35wt% SiO 2 content) into 2000g deionized water in turn, and stirred at room temperature until a uniform sol solution was formed;

[0033] Add the prepared directing agent solution to the sol solution, stir evenly, add the molybdenum-containing organic solution, and continue stirring until a uniform sol solution is formed;

[0034] Transfer the above sol solution into a hydrothermal crystal...

Embodiment 3

[0068] This example provides a preparation method for in-situ synthesis of Mo-modified Y molecular sieve and its application example in C4 alkylation reaction:

[0069] Add 2.3g of sodium hydroxide, 1.35g of pseudo-boehmite and 11.9g of deionized water into the beaker, stir to dissolve completely, add 12.6g of sodium silicate solution, stir vigorously, seal and age for 24 hours to obtain a directing agent solution ;

[0070] Add 6.6g of molybdenum cyclohexanoate into 68.5g of cyclohexane, stir evenly to form molybdenum-containing organic solution after dissolving completely;

[0071] With 76.9g sodium hydroxide, 105.6g pseudo-boehmite and 900g water glass solution (30wt%SiO 2 content) into 2100g deionized water in turn, and stirred at room temperature until a uniform sol solution was formed;

[0072] Add the prepared directing agent to the sol solution, stir evenly, then add the molybdenum-containing organic solution, and continue stirring until a uniform sol solution is for...

Embodiment 4

[0087] This example provides a preparation method for in-situ synthesis of Mo-modified Y molecular sieve and its application example in C4 alkylation reaction:

[0088] Add 2.3g of sodium hydroxide, 1.35g of pseudo-boehmite and 11.9g of deionized water into the beaker, stir to dissolve completely, add 12.6g of sodium silicate solution, stir vigorously, seal and age for 24 hours to obtain a directing agent solution ;

[0089] Add 9.0g of molybdenum octadecyl salicylate into 80.0g of cyclohexane, and stir evenly after dissolving to form an organic solution containing molybdenum;

[0090] 51.3g sodium hydroxide, 89.8g sodium aluminate, and 700g silica sol (35wt% SiO 2 Content) was added to 2500g deionized water in turn, and stirred at room temperature until a uniform sol solution was formed;

[0091] Add the prepared directing agent to the sol solution, stir evenly, then add the molybdenum-containing organic solution, and continue stirring until a uniform sol solution is formed...

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Abstract

The invention relates to an application of a Mo modified Y molecular sieve in a C4 alkylation reaction. The Mo modified Y type molecular sieve catalyst can be obtained through impregnation loading, ion exchange and in-situ synthesis. The C4 alkylation reaction is an alkylation reaction of isobutane and butene, and the reaction temperature range is 60-90 DEG C, preferably 70-80 DEG C; the pressure range is from 1.5 MPa to 3.0 MPa, preferably from 2.0 MPa to 2.5 MPa; the weight hourly space velocity in terms of total butylene is 0.02-0.2 h <-1 >, preferably 0.05-0.1 h <-1 >; the ratio of alkane to olefin ranges from 50 to 300, and preferably ranges from 90 to 250. The Mo modified Y-type molecular sieve prepared by the invention can obviously improve the C4 alkylation reaction performance of the Y-type molecular sieve, prolong the reaction life and improve the average octane number of the product.

Description

technical field [0001] The invention relates to the field of C4 alkylation, in particular to a C4 alkylation catalyst and a method for preparing high-octane gasoline by C4 alkylation. Background technique [0002] C4-alkylated gasoline has the characteristics of high octane number, low sulfur, and low olefins. It is an ideal gasoline blending component and an important means to upgrade domestic gasoline quality. With the increasingly stringent domestic environmental protection regulations, the quality upgrade of refined oil will surely promote the rapid development of C4-alkylated gasoline industry. The feedstock used in the alkylation unit usually comes from the mixed C4 fraction produced by the catalytic cracking unit. [0003] Among the many blending components, the main component of alkylated gasoline is isoparaffins with high octane number. It does not contain tetraethyl lead, MTBE, olefins, and aromatics. The octane number is as high as 95-99, and the vapor pressure i...

Claims

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Application Information

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IPC IPC(8): B01J29/16B01J37/10B01J37/30C01B39/24C10G50/00
CPCB01J29/166B01J37/10B01J37/30C01B39/24C10G50/00B01J2229/186B01J2229/24C10G2300/1092C10G2300/305C10G2400/02C10G2300/70C10G2300/1081Y02P30/20
Inventor 任鲲龚奇菡吕雉马安张上胡长禄徐华崔佳杜令印陈志伟王晓胜张习硕韩晓琳张鹏潘晖华李知春桂鹏
Owner PETROCHINA CO LTD
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