Light oil non-hydroaromatization catalyst as well as preparation method and application thereof

A catalyst and aromatization technology, applied in the field of non-hydrogen reforming catalysts, can solve the problems of low processing utilization rate of carbon four fractions, poor combustion quality, less than 20%, etc., and achieve high catalytic activity and stability. The effect of small investment and reduced preparation cost

Inactive Publication Date: 2015-09-23
SHANDONG JINCHENG HEAVY OIL RES INST OFCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The processing and utilization rate of the C4 fraction in refinery gas in my country is very low. Except a small amount is used to produce alkylated gasoline and MTBE, most of the rest are directly burned as civil liquefied gas, and the total utilization rate is less than 20%. With the improvement of my country's catalytic cracking processing capacity, especially the application of some heavy oil catalytic cracking technologies aimed at producing more ethylene and propylene, the output of carbon four components from catalytic cracking units has increased year by year. Due to its high olefin content, combustion Poor quality, directly used as fuel will not only pollute the environment, but also a great waste

Method used

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  • Light oil non-hydroaromatization catalyst as well as preparation method and application thereof
  • Light oil non-hydroaromatization catalyst as well as preparation method and application thereof
  • Light oil non-hydroaromatization catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Modification of molecular sieve with Zn: Weigh 8.0g zinc nitrate, dissolve it in 175ml distilled water, and weigh 100g SiO 2 / Al 2 O 3 The HZSM-5 molecular sieve with a molar ratio of 35 was put into the prepared zinc nitrate aqueous solution and stirred rapidly at 35°C for 3 hours. Ensure that the exchange is complete, then filter the slurry, dry the filter cake at 100°C for 2 hours, and roast the filter cake at 550°C for 4 hours. After crushing, Zn / HZSM-5 is obtained.

[0035] (2) Molecular sieve P modification: Weigh 9.98g phosphoric acid (85%) solution, dissolve it in 180ml distilled water, weigh Zn / HZSM-5 into the phosphoric acid aqueous solution, exchange for 3h, and then filter the slurry at 100℃ The filter cake was dried for 2 hours, and the filter cake was calcined at 550°C for 4 hours and crushed to obtain ZnP / HZSM-5.

[0036] (3) Preparation of carrier: Weigh 3.5 g of Sesbania powder and 49.8 g of SB powder and mix them evenly, and add 70.3 g of modified molec...

Embodiment 2

[0040] (1) Modification of molecular sieve with Zn: Weigh 12.0g zinc nitrate, dissolve it in 263ml distilled water, and weigh 150g SiO 2 / Al 2 O 3 The HZSM-5 molecular sieve with a molar ratio of 35 was put into the prepared zinc nitrate aqueous solution and stirred rapidly at 35°C for 3 hours. Ensure that the exchange is complete, then filter the slurry, and dry the filter cake at 100°C for 2 hours. The filter cake is calcined at 550°C for 4 hours and crushed to obtain Zn / HZSM-5.

[0041] (2) Molecular sieve P modification: Weigh 14.97g phosphoric acid (85%) solution, dissolve it in 270ml distilled water, weigh Zn / HZSM-5 into the phosphoric acid aqueous solution, exchange for 3h, and then filter the slurry at 100℃ The filter cake was dried for 2 hours, and the filter cake was calcined at 550°C for 4 hours and crushed to obtain ZnP / HZSM-5.

[0042] (3) Preparation of carrier: Weigh 5.3 g of sesame powder and 74.7 g of SB powder and mix them uniformly, and add 105.5 g of modified mo...

Embodiment 3

[0046] (1) Modification of molecular sieve with Zn: Weigh 8.0g zinc nitrate, dissolve it in 175ml distilled water, and weigh 100g SiO 2 / Al 2 O 3 The HZSM-5 molecular sieve with a molar ratio of 50 was put into the prepared zinc nitrate aqueous solution and stirred rapidly at 35°C for 3 hours. Ensure that the exchange is complete, then filter the slurry, and dry the filter cake at 100°C for 2 hours. The filter cake is calcined at 550°C for 4 hours and crushed to obtain Zn / HZSM-5.

[0047] (2) Modification of molecular sieve P: Same as described in Example 1(2).

[0048] (3) Preparation of carrier: same as described in Example 1(3).

[0049] (4) Preparation of the dipping solution: same as described in Example 1(4).

[0050] (5) Preparation of catalyst: As described in Example 1(2), the light oil aromatization catalyst FGHC-3 was finally prepared.

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Abstract

The invention relates to a light oil aromatization catalyst, in particular to a non-hydrogen modified catalyst suitable for producing a high-octane gasoline blending component as well as a preparation method and application of the non-hydrogen modified catalyst. According to the catalyst, a catalyst active component is loaded on a carrier containing a modified molecular sieve. The catalyst is characterized in that the active component is transition metal oxide and the loading capacity is 0.5-5.0 wt%. The preparation method comprises the following specific steps: 1), molecular sieve modification; 2), carrier preparation; 3), preparation of a dipping solution; 4) catalyst preparation; 5), steam treatment. The application of the catalyst is that the catalyst is used in light oil non-hydroaromatization reaction, and is characterized in that the aromatization reaction conditions are that reaction pressure is 0.1-1.0 MPa, the reaction temperature is 280-420 DEG C and the liquid hourly space velocity is 0.5-2.0 h<-1>. According to the invention, the transition metal element with relatively cheap price is used as the active component for preparation of the light oil aromatization catalyst which is high in activity and good in stability, the catalyst can replace an industrial modifier in the prior art, an octane value of the gasoline is further increased and the liquid yield is increased.

Description

Technical field [0001] The invention relates to a light oil aromatization catalyst, in particular to a non-hydrogen upgrading catalyst suitable for producing high-octane gasoline blending components, and a preparation method and application thereof. Background technique [0002] With the increasing environmental protection requirements, by 2016, motor gasoline will fully implement the National V standard, and the sulfur content will be reduced from 50ppm of National IV to below 10ppm. The traditional methods for producing clean gasoline that meet the requirements of the new standard include catalytic reforming of naphtha, isomerization of light gasoline, and hydrocracking, etc., but catalytic reforming is still the main method. Therefore, the production capacity of my country's clean gasoline is still far from meeting the demand. [0003] The processing utilization rate of the C4 fraction in the refinery gas in China is very low. Except for a small amount used to produce alkylated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/46B01J29/48C10G35/095
Inventor 郭秀学姚若纳高双飞
Owner SHANDONG JINCHENG HEAVY OIL RES INST OFCHEM TECH
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