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Cracking catalyst with hydrogen being added for noble metal and its prepn. method

A hydrocracking and precious metal technology, applied in hydrocarbon oil cracking, petroleum industry and other directions, can solve the problem of low oil selectivity in reaction products, and achieve the effects of good thermal stability, high nitrogen resistance, and good oil selectivity

Inactive Publication Date: 2004-09-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The common disadvantages of the above patents are that the USY zeolite used in the preparation process has not undergone secondary hydrothermal treatment and acid treatment, so the zeolite has a relatively low silicon-alumina ratio and high acidity, which leads to the catalyst being used for heavy distillate oil hydrogenation During the cracking process, the medium oil selectivity of the reaction product is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] a. NaY zeolite 100g (unit cell parameter 2.472nm, crystallinity 100% with the production of Wenzhou Catalyst Factory, NaY 2 O content 10w%, SiO 2 / Al 2 o 3 =5.1, dry basis 100%) put in the solution containing 160gNH 4 NO 3 and 3 ml of concentrated nitric acid (65%) in 1 liter of aqueous solution, heated up to 80°C, stirred for 1 hour, filtered, washed, and dried.

[0031] b. Afterwards, place it in a closed furnace and treat it for 2 hours at a water pressure of 0.2MPa and a temperature of 620°C.

[0032] c. Put the product into 1 liter of aqueous solution as described in a, stir at 80° C. for 1 hour and then filter, repeat once.

[0033] d. After repeating steps b and c, the product was dried at 120° C. for 2 hours to prepare a modified Y-type zeolite.

[0034] e. the obtained modified Y-type zeolite and German SB alumina powder (Al 2 o 3 Dry basis content 75w%) 300g mix evenly, and add 7ml concentrated nitric acid (65%) and appropriate amount of water, add 3g ...

example 2

[0037] A. put in the NaY zeolite 100g (same embodiment 1) that Wenzhou Catalyst Factory produces is dissolved in 160g

[0038] NH 4 NO 3 1 liter of aqueous solution, heated to 80 ° C, stirred for 1 hour, filtered, washed, and dried.

[0039] b. Afterwards, place it in a closed furnace and treat it for 2 hours at a water pressure of 0.15MPa and a temperature of 600°C.

[0040] The c.b product was put into 1 liter of aqueous solution as described in a, stirred at 80°C for 1 hour, then filtered, and repeated once.

[0041] d. Repeat step b, after the second hydrothermal treatment, the product is put into 1 liter of aqueous solution that is dissolved with 25ml of concentrated nitric acid (65%), heated up to 80°C, filtered after stirring for 1 hour, washed, dried, and dried at 120°C Dry for 2 hours to make a modified Y-type zeolite.

[0042] e. the obtained modified Y-type zeolite and German SB alumina powder (Al 2 o 3 Dry basis content 75w%) 350g and mix evenly, and add 7ml ...

example 3

[0045] a. NaY zeolite 100g (unit cell parameter 2.472nm, crystallinity 100% with the production of Wenzhou Catalyst Factory, NaY 2 O content 10w%, SiO 2 / Al 2 o 3 =5.1, dry basis 100%) put in the solution containing 160gNH 4 NO 3 and 3 ml of concentrated nitric acid (1.4 g / ml, 65%) in 1 liter of aqueous solution, heated to 80° C., stirred for 1 hour, filtered, washed, and dried.

[0046] b.a The product is placed in a closed furnace and treated for 2 hours at a water pressure of 0.3Mpa and a temperature of 650°C.

[0047] Put the product in c.b into 1 liter of aqueous solution as described in a, stir at 80°C for 1 hour and then filter, repeat once.

[0048] d. Repeat step b. After the second hydrothermal treatment, the product is put into 1 liter of aqueous solution that is dissolved with 40 ml of concentrated nitric acid (65%), heated to 80° C., filtered after stirring for 1 hour, washed, dried, and heated at 120° C. Dry for 2 hours to make a modified Y-type zeolite.

...

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Abstract

A noble metal hydrocracking catalyst is composed of modified Y zeolite alumina as carrier which has been treated hydrothermal twice and by acid, and the active hydrogenating component which is the noble metal chosen from VIII family. Its advantages are high thermal stability, high selectivity to medium oil and high resistance to S and N.

Description

1. Technical field [0001] The invention belongs to the hydrocracking technology in the oil refining process, and relates to a supported noble metal catalyst for distillate oil hydrocracking and a preparation method thereof. 2. Background technology [0002] Hydrocracking refers to the reactions of hydrogenation, desulfurization, denitrogenation, rearrangement of carbon atom skeleton and cracking of raw oil in the presence of certain temperature and pressure, hydrogen and catalyst, so as to convert high boiling point hydrocarbons into small molecules with low boiling point product process. [0003] Hydrocracking catalysts are generally bifunctional catalysts. The catalytic cracking function is provided by an acidic carrier, which can be amorphous alumina (Al 2 o 3 ), silicon aluminum oxide (such as SiO 2 -Al 2 o 3 ) or crystalline molecular sieves (usually modified Y zeolite), or their combination; while the hydrogenation-dehydrogenation function is provided by metal co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G47/12
Inventor 王旭王继锋申柯梁湘程刘雪玲
Owner CHINA PETROLEUM & CHEM CORP
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