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Alkylation reaction method of isoalkane and olefin

A technology for isoparaffins and olefins, which is applied in the field of magnetic solid acid catalyzed alkylation reactions of isoparaffins and olefins, and can solve problems that have not been seen before

Active Publication Date: 2013-01-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] So far, there is no report on the use of magnetic solid acid to catalyze the alkylation of isoparaffins and olefins in a magnetically stabilized bed reactor

Method used

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  • Alkylation reaction method of isoalkane and olefin
  • Alkylation reaction method of isoalkane and olefin
  • Alkylation reaction method of isoalkane and olefin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This example illustrates the preparation of a magnetic alumina support.

[0055] 0.5mol / L FeCl 2 Solution 240ml with 0.5mol / L FeCl 3 Mix 400ml of the solution, add 0.1mol / L NaOH solution under strong stirring until 103 o 4 .

[0056] the above Fe 3 o 4 Dilute to 30g / L with absolute ethanol, add tetraethoxysilane (0.003mol / gFe 3 o 4 ), to which 18% NH was added under stirring 3 .H 2 O (the molar ratio of ammonia to tetraethoxysilane is 25), stirred for 6 hours, separated, washed, and finally dried at 80°C for 2 hours to obtain the magnetic powder coated for the first time. Dilute the powder with distilled water to 30g / L, ultrasonically disperse for 5 minutes, adjust the suspension to PH=8-10 with 0.1mol / L NaOH solution, and raise the temperature of the suspension to 80-90°C, and then slowly Add 0.05mol / L of SiO 2 Solution (sodium silicate modulus is 1, the addition amount is 0.003molSiO 2 / g magnetic powder) and 0.1mol / L HCl solution, and reacted at this tempe...

Embodiment 2

[0059] This example illustrates the preparation of a magnetic solid acid catalyst.

[0060] 1.5g ZrSO 4 .4H 2 O was dissolved in 14ml of deionized water to make a saturated impregnation solution, and 20g of magnetic γ-Al was weighed 2 o 3 The carrier is saturated impregnated with the above impregnating solution, dried at 120°C and calcined at 650°C, and then ground to a size of 150-250um to obtain Catalyst-1.

[0061] 4.0g TiSO 4 Dissolve in 14ml deionized water to make a saturated impregnation solution, weigh 20g magnetic γ-Al 2 o 3 The carrier is saturated impregnated with the above impregnating solution, dried at 120°C and calcined at 500°C, and then ground to a size of 150-250um to obtain Catalyst-2.

[0062] 14.6g NiSO 4 .6H 2 O was dissolved in 14ml of deionized water to make a saturated impregnation solution, and 20g of magnetic γ-Al was weighed 2 o 3 The carrier is saturated impregnated with the above impregnating solution, dried at 120°C and calcined at 500°...

Embodiment 3～5

[0064] The following examples illustrate the reaction effects of different catalysts.

[0065] 15g of the catalyst obtained in Example 2 is loaded into the magnetically stabilized bed reactor. After reaching the reaction conditions, the mixture of raw material isobutane and 1-butene is pumped into the alkylation reaction. The reaction temperature is 80°C and the reaction pressure is 2.0MPa, and the weight space velocity is 2h -1 , the alkene molar ratio is 10, and the magnetic field strength is 200Oe. The reaction results are shown in Table 1.

[0066] Table 1

[0067]

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Abstract

The invention relates to an alkylation reaction method of isoalkane and olefin. The isoalkane and the olefin are subjected to contact reaction under the catalysis of magnetic solid acid functioning ascatalyst in a magnetically stabilized bed reactor at the temperature of 10-250 DEG C, the pressure of 0.2-5 MPa, the weight space velocity of 1-30h<-1>, the mol ratio of alkanes and alkenes of 1-100and the magnetic density of 40-1000 Oe. The isoalkane and the olefin are processed by contact reaction under the catalysis of magnetic solid acid of small grainsize in the magnetically stabilized bedreactor, thus the alkylation reaction efficiency of the isoalkane and the olefin is improved, and the mass transfer effect and the heat transfer effect during the alkylation reaction are greatly improved.

Description

technical field [0001] The present invention relates to a method for the alkylation reaction of isoparaffins and olefins, more specifically, relates to a method for carrying out the alkylation reaction of isoparaffins and olefins with a magnetic solid acid catalyst in a magnetically stabilized bed . Background technique [0002] The alkylation products of isoparaffins and olefins have the advantages of good anti-riot performance, low vapor pressure, no aromatics, sulfur and olefins, and less smoke in exhaust, etc. It is not only an ideal blending component for high-octane gasoline, but also An environmentally friendly petrochemical product. The alkylation process can more fully utilize the refinery gas resources, so it is the most widely used and most valued gas processing process in the refinery. [0003] After decades of development of the alkylation process, the liquid acid alkylation process is still commonly used. Although this process has the advantages of mild reac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C5/22C07C2/58C10G50/00B01J27/053
Inventor 彭颖宗保宁孟祥堃
Owner CHINA PETROLEUM & CHEM CORP
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