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Aromatization catalyst, its preparation method and application

A catalyst and aromatization technology, which is applied in the field of aromatization catalyst and its preparation, can solve the problems of deactivation, aromatization catalyst easy to coke, etc., achieve high operation rate, realize long-term operation, improve reaction and regeneration status effect

Active Publication Date: 2007-02-07
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a novel aromatization catalyst aiming at the shortcoming that the aromatization catalyst in the prior art is easily coke-generated and deactivated, and the catalyst has higher aromatization activity, strength, stability and fluidity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Get 1500 grams of HZSM-5 molecular sieves with a commercially available silicon-aluminum ratio of 60, use 206 grams of Zn(NO 3 ) 2 1000ml of the solution and 200ml of the solution containing 25 grams of mixed rare earth chlorides (wherein containing lanthanum oxide 21%, cerium oxide 11%) are exchanged. That is, at 40°C, stir and exchange rapidly for 2 hours, then filter the slurry, dry the filter cake at 110°C for 2 hours, roast and pulverize the filter cake, and then use 63.9 g (NH 4 ) 2 HPO 4 The solution 1000ML was exchanged for another 2 hours. After drying, roasting and crushing, a modified HZSM-5 molecular sieve a was obtained, in which the Zn content was 2.7%, the total amount of rare earth element oxides was 0.5% (including 0.3% of lanthanum oxide and 0.2% of cerium oxide), and the content of P was 1 %.

[0023] 714 grams of aluminum sol solution (pH value is 3.0, containing Al 2 o3 21%), add 100 ml of deionized water. Mix 500 grams of modified ZSM-5 mol...

Embodiment 2

[0025] Get 1500 grams of HZSM-5 molecular sieves with a commercially available silicon-aluminum ratio of 35, use 420 grams of Zn(NO 3 ) 2 1000ml of the solution and 200ml of the solution containing 50 grams of lanthanum nitrate (wherein the lanthanum content is 13.1%) are exchanged. That is, at 40°C, stir and exchange rapidly for 2 hours, then filter the slurry, dry at 110°C for 2 hours, roast and pulverize, and then use 63.9 g (NH 4 ) 2 HPO 4 The solution 1000ML was exchanged for another 2 hours. After drying, roasting and crushing, the modified HZSM-5 molecular sieve b is obtained, in which the Zn content is 5.6%, the rare earth element lanthanum content is 0.398%, and the P content is 1%.

[0026] Get 476 grams of aluminum sol solution (pH value is 3.0, containing Al 2 o 3 21%), add 100 ml of deionized water. Mix 600 grams of modified ZSM-5 molecular sieve b, 80 grams of REUSY molecular sieve and 220 grams of pseudoboehmite evenly, ball mill to 400-1000 mesh, take a...

Embodiment 3

[0028] Get 1500 grams of HZSM-5 molecular sieves with a commercially available silicon-aluminum ratio of 100, use 420 grams of Zn(NO 3 ) 2 Exchange 1000ml of the solution and 200ml of the solution containing 100 grams of lanthanum nitrate (wherein the lanthanum content is 13.1%) (. That is, at 40°C, stir and exchange rapidly for 2 hours, then filter the slurry, dry at 110°C for 2 hours, and roast , After crushing, use 63.9 grams (NH 4 ) 2 HPO 4 The solution 1000ML was exchanged for another 2 hours. After drying, roasting and crushing, the modified HZSM-5 molecular sieve c is obtained, wherein the Zn content is 5.6%, the rare earth element lanthanum content is 0.8%, and the P content is 1%.

[0029] Get 476 grams of aluminum sol solution (pH value is 3.0, containing Al 2 o 3 21%), add 100 ml of deionized water. Mix 600 grams of modified ZSM-5 molecular sieve c, 80 grams of REY molecular sieve and 220 grams of pseudo-boehmite evenly, ball mill to 400-1000 mesh, take a sm...

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Abstract

An aromatizing catalyst for molifying poor gasoline to prepare high-octane gaseline component or arylhydrocarbon is prepared from the Zn, P and RE metal modified HZSM-5 molecular sieve, Y-type molecular sieve, carrier and adhesive proportionally.

Description

technical field [0001] The invention belongs to the field of petroleum refining, and relates to an aromatization catalyst, a preparation method and application thereof. Background technique [0002] More than 70% of my country's gasoline comes from catalytic cracking units, and more than 50% of the raw materials processed by my country's catalytic cracking units are paraffin-based (including Daqing crude oil, Jilin crude oil, Shenbei crude oil, etc., collectively referred to as Daqing crude oil), due to its density Low, low heavy metal content, low sulfur content, high hydrogen content, high saturated hydrocarbon content, etc., both distillate oil and atmospheric heavy oil are good raw materials for catalytic cracking, but the low octane number of gasoline is the shortcoming of this kind of raw materials Whereas, the overall research octane level of FCC gasoline processing this feedstock ranges from about 87.5 to 89.5. With the improvement of environmental protection requirem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/06C07C2/42C07C15/00
Inventor 郝代军刘丹禾魏小波韩海波龚旭辉黄学政俞安平任潇航沈方峡王贵云李昕
Owner CHINA PETROCHEMICAL CORP
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