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Catalyst suitable for enhancing gasoline octane number of fuel and lowering olefin content and application thereof

A gasoline octane number and olefin content technology, applied in molecular sieve catalysts, physical/chemical process catalysts, catalytic cracking, etc., can solve the problems of short service life of catalysts, high dry gas yield, complex devices, etc., and achieve good product resistance Effects of carbon capacity, long catalyst one-way life, and long one-way life

Active Publication Date: 2014-08-27
宁夏永全新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] 1. The device is complicated and the investment is large
[0016] 2. Increase gasoline octane number and reduce olefin content at the same time, the effect is not good
[0017] 3. High dry gas yield.
[0018] 4. Single use, either suitable for olefin aromatization, or suitable for increasing octane number
[0019] 5. It is easy to form carbon during use, and the service life of the catalyst is short

Method used

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  • Catalyst suitable for enhancing gasoline octane number of fuel and lowering olefin content and application thereof
  • Catalyst suitable for enhancing gasoline octane number of fuel and lowering olefin content and application thereof
  • Catalyst suitable for enhancing gasoline octane number of fuel and lowering olefin content and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Prepare the catalyst of the present invention according to the following method

[0061] 0.148Kg Ga 2 (SO 4 ) 3 The prepared solution was washed with ammonium (Na 2 O<0.1% by weight) ammonium ZSM-5 molecular sieve (silicon to aluminum ratio 80) was impregnated with equal volume at room temperature for 2h, then dried at 120°C for 12h, and calcined at 550°C for 2h.

[0062] 0.093Kg (dry basis weight, the same below) pseudo-boehmite (solid content 73.67% by weight, Shandong Aluminum Plant), 0.422Kg 85% by weight phosphoric acid and deionized water were used to prepare phosphoraluminum glue with a solid content of 30% by weight. The peptization was stirred at room temperature for 2h.

[0063] Mix the above modified ZSM-5 molecular sieve and phosphoraluminum glue with 3.41Kg α-alumina monohydrate powder (manufactured by Condea, Germany), and add 1:1 nitric acid (nitric acid: carrier dry basis = 1mL: 100g) and water ( Water: Carrier dry basis = 1:4), knead into a dough, ...

Embodiment 2

[0067] Prepare the catalyst of the present invention according to the following method

[0068] 0.176KgMn(NO 3 ) 2 Make up the solution to 7Kg ​​(dry basis weight) after ammonium cross washing (Na 2 O<0.1% by weight) ammonium ZSM-5 molecular sieves (silicon-aluminum ratio 120) were impregnated with equal volume at room temperature for 2h, then dried at 120°C for 12h, and calcined at 550°C for 2h.

[0069] 0.11Kg (dry basis weight, the same below) pseudoboehmite (solid content 73.67% by weight, Shandong Aluminum Plant), 0.45Kg 85% by weight phosphoric acid and deionized water were prepared into a phosphoraluminum glue with a solid content of 30% by weight. The peptization was stirred at 45°C for 2h.

[0070] Mix the above modified ZSM-5 molecular sieve and phosphoraluminum glue with 2.89Kg α-alumina monohydrate powder (manufactured by Condea, Germany) evenly, add 1:1 nitric acid (nitric acid: carrier dry basis = 1mL: 100g) and water (water : Carrier dry basis = 1:4), knead ...

Embodiment 3

[0074] Prepare the catalyst of the present invention according to the following method

[0075] 0.14KgZn(NO 3 ) 2 Make up the solution to 6Kg (dry basis weight) after ammonium cross washing (Na 2 O<0.1% by weight) ammonium ZSM-5 molecular sieve (silicon to aluminum ratio 50) was impregnated with equal volume at room temperature for 2h, then dried at 120°C for 12h, and calcined at 550°C for 2h.

[0076] 0.072Kg (dry basis weight, the same below) pseudo-boehmite (solid content 73.67% by weight, Shandong Aluminum Plant), 0.39Kg 85% by weight of phosphoric acid and deionized water to prepare phosphoraluminum glue with a solid content of 30% by weight, The peptization was stirred at 60°C for 2h.

[0077] Mix the above modified ZSM-5 molecular sieve and phosphoraluminum glue with 3.93Kgα-alumina monohydrate powder (manufactured by Condea, Germany) evenly, add 1:1 nitric acid (nitric acid: carrier dry basis = 1mL: 100g) and water (water : Carrier dry basis = 1:4), knead into a do...

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Abstract

The invention relates to a catalyst suitable for enhancing gasoline octane number of fuel and lowering olefin content and application thereof, belonging to a catalyst containing a molecular sieve. The catalyst is prepared from the following raw materials in percentage by mass: 25-50% of aluminum trioxide hydrate on the basis of Al2O3, 1-5% of P on the basis of P2O5, 0.1-5% of rare-earth oxide on the basis of RE2O3 and 50-75% of modified shape-selective molecular sieve. The invention provides a catalyst with olefin aromatization function; the fuel treated by the catalyst has the advantages of high gasoline octane number, low olefin content, high gasoline yield and low dry gas yield; and the catalyst has the advantages of low coking tendency and long service life. The catalyst is suitable for aromatization modification of fuel C4 liquefied petroleum gas, and can lower the olefin content of the fuel; and the catalyst enhances the straight-run gasoline octane number, and lowers the catalytically cracked gasoline olefin content. The C4 liquefied petroleum gas and the straight-run gasoline can be used as raw materials to produce modified fuel gasoline; and etherified C4 and straight-run naphtha can be used as raw materials to produce modified fuel gasoline.

Description

technical field [0001] The invention relates to a catalyst suitable for increasing the octane number of fuel gasoline while reducing its olefin content and its application. Catalysts including molecular sieves. Background technique [0002] National III gasoline vehicle emission standards stipulate that the olefin content in gasoline should not be higher than 30%, the aromatic content should not be higher than 40%, and the benzene content should not be higher than 1%. At present, among fuel gasoline, catalytic cracking gasoline, also known as olefin gasoline, occupies a large market share, and its olefin content is relatively high, so it is difficult to meet the technical requirements of the new standard. In particular, fuel gasoline produced by the catalytic cracking process of heavy oil and crude oil with high slag content has higher olefin content. It is difficult to reach the specified target only by improving the catalytic cracking process technology. Therefore, reduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/48C10G35/095C10G50/00C10G45/68C10G11/05C10G45/64
Inventor 丁泳
Owner 宁夏永全新能源科技有限公司
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