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Solid acid alkylation catalyst, and preparation method and application thereof

A catalyst and alkylation technology, which is applied in the direction of catalyst activation/preparation, carbon compound catalyst, catalyst, etc., can solve the problems of process technology industrialization process, fast deactivation, etc., achieve long service life, good stability, and improve selection sexual effect

Pending Publication Date: 2019-12-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the development of solid acid catalysts for the alkylation of isobutane and butene has passed for decades, due to the rapid deactivation of the developed solid acid catalysts during the alkylation reaction, the industrialization of this process technology has received limited attention. influences

Method used

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  • Solid acid alkylation catalyst, and preparation method and application thereof
  • Solid acid alkylation catalyst, and preparation method and application thereof
  • Solid acid alkylation catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] With 25.20g high alkali sodium metaaluminate solution (Sinopec Catalyst Changling Branch Company provides, Al 2 o 3 The content is 40.2g / L, Na 2 O content is 255g / L, specific gravity is 1.324) joins 32.78g water glass (Sinopec Catalyst Changling Branch provides, SiO 2 The content is 260.6g / L, Na 2 The O content is 81.6g / L, the specific gravity is 1.2655, and the modulus is 3.3), and the molar composition is 15Na 2 O: A1 2 o 3 :15SiO2 2 The first mixture was aged under dynamic stirring at room temperature for 48 hours, then stood and aged at 60°C for 5 hours, and finally added 7.5 g of deionized water under stirring conditions to obtain a final molar composition of 15Na 2 O: A1 2 o 3 :15SiO2 2 :320H 2 The second mixture of O is the directing agent.

[0101] Under the conditions of room temperature and high-speed stirring, follow the guide agent (prepared in the preceding steps), 84.13g water glass (same as above), 6.71g low-alkali sodium metaaluminate solution...

Embodiment 2

[0105] With 25.20g high alkali sodium metaaluminate solution (Sinopec Catalyst Changling Branch Company provides, Al 2 o 3 The content is 40.2g / L, Na 2 O content is 255g / L, specific gravity is 1.324) joins 32.78g water glass (Sinopec Catalyst Changling Branch provides, SiO 2 The content is 260.6g / L, Na 2 The O content is 81.6g / L, the specific gravity is 1.2655, and the modulus is 3.3), and the molar composition is 15Na 2 O: A1 2 o 3 :15SiO2 2 The first mixture was aged under dynamic stirring at 60°C for 5 hours, then stood and aged at 60°C for 5 hours, and finally added 7.5g of deionized water under stirring conditions to obtain the final molar composition: 15Na 2 O: A1 2 o 3 :15SiO2 2 :320H 2 The second mixture of O is the directing agent.

[0106] Under the conditions of room temperature and high-speed stirring, follow the guide agent (prepared in the preceding steps), 84.13g water glass (same as above), 6.71g low-alkali sodium metaaluminate solution (provided by...

Embodiment 3

[0110] 82.27g high alkali sodium metaaluminate solution (provided by Sinopec Catalyst Changling Branch, Al 2 o 3 The content is 40.2g / L, Na 2 O content is 340g / L, specific gravity is 1.297) joins 145.68g water glass (Sinopec Catalyst Changling Branch provides, SiO 2 The content is 260.6g / L, Na 2 The O content is 81.6g / L, the specific gravity is 1.2655, and the modulus is 3.3), and the molar composition is 20Na 2 O: A1 2 o 3 :20SiO2 2 The first mixture was aged under dynamic stirring at 30°C for 20 hours, then stood and aged at 40°C for 15 hours, and finally added 30g of deionized water under stirring to obtain a final molar composition of 20Na 2 O: A1 2 o 3 :20SiO2 2 :380H 2 The second mixture of O is the directing agent.

[0111] Under the conditions of room temperature and high-speed stirring, according to the guide agent (prepared in the preceding steps), 54.63g water glass (same as above), 8.32 low alkali sodium metaaluminate solution (provided by Sinopec Catalyst...

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Abstract

The invention relates to a solid acid alkylation catalyst, and a preparation method and application thereof. Based on the dry basis weight of the catalyst, the catalyst comprises 38-90 wt% of a modified Y molecular sieve in terms of dry basis weight, 8-60 wt% of a carrier in terms of dry basis weight, and 0.1-2 wt% of a metal auxiliary agent having a hydrogenation function in terms of metal. A molar ratio of SiO2 to Al2O3 in the framework of the modified Y molecular sieve is 5.0-6.0; the modified Y molecular sieve has a micropore specific surface area of 400-600 m<2> / g, a micropore volume of 0.25 to 0.35 cm<3> / g, a mesopore specific surface area of 30-200 m<2> / g, a mesopore volume of 0.07-0.85 cm<3> / g, and a mesopore diameter of 2.0-6.0 nm; and the content of sodium oxide in the modified Ymolecular sieve does not exceed 0.1 wt% based on the total weight of the modified Y molecular sieve. The catalyst disclosed by the invention is suitable for catalyzing an alkylation reaction of isoparaffin with low-carbon olefin, can improve the selectivity of the target product trimethylpentane and limit the yield of the unwanted by-product C9<+>, and has long service life and good stability; and the activity of the catalyst can be recovered to the level of a fresh catalyst after hydrogen regeneration.

Description

technical field [0001] The present disclosure relates to a solid acid alkylation catalyst, its preparation method and application. Background technique [0002] In the petroleum refining industry, isoparaffins and C 3 ~C 6 Alkylation of olefins is an important process for the production of clean, high-octane gasoline components. This kind of alkylated gasoline has low vapor pressure, low sensitivity, good anti-knock performance, no aromatics, olefins, and low sulfur content. It is an ideal blending component for high-octane gasoline. [0003] Alkylation is an acid catalyzed reaction. At present, the industrially applied alkylation production processes include sulfuric acid method and hydrofluoric acid method, which use liquid sulfuric acid or hydrofluoric acid as a catalyst to synthesize alkylate oil from isoparaffins and olefins. Due to the corrosiveness and toxicity of liquid acid catalyst sulfuric acid and hydrofluoric acid and the harm to the environment caused by th...

Claims

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Application Information

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IPC IPC(8): B01J29/12B01J29/14B01J37/10B01J37/30B01J37/02B01J35/10C07C2/58C07C9/21
CPCB01J29/126B01J29/146B01J37/10B01J37/30B01J37/0018B01J37/0201C07C2/58B01J2229/18B01J2229/16C07C2529/12C07C2529/14B01J35/615B01J35/617B01J35/633B01J35/635B01J35/69B01J35/647C07C9/21Y02P20/584
Inventor 付强慕旭宏李永祥张成喜胡合新
Owner CHINA PETROLEUM & CHEM CORP