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Nobel metal hydrogen cracking catalyst and its preparing method

A hydrocracking and catalyst technology, which is used in hydrocarbon oil cracking, petroleum industry and other directions, can solve the problems of low selectivity of middle distillate oil, low content of precious metals, and the metal is not easy to distribute evenly, so as to meet the requirements of catalyst activity and selectivity, improve the The effect of medium oil selectivity and optimized dispersion of precious metals

Inactive Publication Date: 2003-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method of the catalyst in this patent still adopts the traditional preparation method without improvement. There is a problem that the loaded precious metal content is small, and the metal is not easy to distribute evenly. The hydrogenation center and cracking center on the catalyst are not separated, so the metal distribution Also suffers from poor homogeneity with low selectivity to middle distillates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] 1. put NaY zeolite 100g (98% crystallinity, unit cell parameter 2.462nm) that Wenzhou Catalyst Factory produces in the solution that has 144g NH 4 NO 3 and 2.7ml concentrated nitric acid (concentrated HNO 3 specific gravity 1.4, concentration 65%) in 1 liter of aqueous solution, the temperature was raised to 90°C, stirred for 1.5 hours, filtered, washed and dried.

[0038] 2. The product obtained in step 1 is placed in a hydrothermal treatment furnace, and treated at a water pressure of 0.3 MPa and a temperature of 600° C. for 4 hours.

[0039] 3. Put the product into 1 liter of aqueous solution as described in step 1, stir at 90° C. for 1 hour and then filter, repeat once.

[0040] 4. After repeating steps 2 and 3, the product was dried at 120°C for 8 hours to make a modified Y-type zeolite.

[0041] 5. SB alumina powder (Al 2 o 3 Aluminum powder dry basis content 75%) 300g immersed in 550ml of H 2 PdCl 4 In the aqueous solution for 24 hours, the solution contai...

example 2

[0044] 1. put NaY zeolite 100g (98% crystallinity, unit cell parameter 2.462nm) that Wenzhou Catalyst Factory produces in the solution that has 144g NH 4 NO 3 and 2.7ml concentrated nitric acid (concentrated HNO 3 specific gravity 1.4, concentration 65%) in 1 liter of aqueous solution, the temperature was raised to 70°C, stirred for 2 hours, filtered, washed and dried.

[0045] 2. The product obtained in step 1 is placed in a hydrothermal treatment furnace, and treated at a water pressure of 0.2 MPa and a temperature of 650° C. for 4 hours.

[0046] 3. Put the product into 1 liter of aqueous solution as described in step 1, stir at 70°C for 1 hour and then filter, repeat once.

[0047] 4. Repeat step 2, after carrying out secondary hydrothermal treatment, the product is put into 1 liter of aqueous solution that is dissolved with 38ml concentrated nitric acid (1.4,65%), is warmed up to 70 ℃, filters after stirring 1 hour, washes, dries, in 120 °C for 8 hours to prepare modif...

example 3

[0051] 1. put NaY zeolite 100g (98% crystallinity, unit cell parameter 2.462nm) that Wenzhou Catalyst Factory produces in the solution that has 144g NH 4 NO 3 1 liter of aqueous solution, heated to 80 ° C, stirred for 2 hours, filtered, washed, and dried.

[0052] 2. The product obtained in step 1 is placed in a hydrothermal treatment furnace, and treated at a water pressure of 0.15 MPa and a temperature of 600° C. for 4 hours.

[0053] 3. Put the product into 1 liter of aqueous solution as described in step 1, stir at 80° C. for 1 hour and then filter, repeat once.

[0054] 4. Repeat step 2, after the secondary hydrothermal treatment, the product is put into 1 liter of aqueous solution that is dissolved with 20ml of concentrated nitric acid (1.4, 65%), heated up to 80°C, filtered after stirring for 1 hour, washed, dried, and dried at 120 °C for 8 hours to prepare modified Y-type zeolite.

[0055] 5. SB alumina powder (Al 2 o 3 Aluminum powder dry basis content 75%) 200g ...

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PUM

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Abstract

The present invention discloses a kind of noble metal hydrogen cracking catalyst and its preparation process. The catalyst contains one carrier component, one modified Y-type zeolite, and one or two kinds of noble metal components. The catalyst features that the hydrogenating noble metal component is loaded onto the carrier component and that the modified superhydrophobic Y-type zeolite containing no hydrogenating component is deep treated to possess great specific surface area, great pore volume, proper acid distribution and high Si / Al ratio. The catalyst has high metal dispersivity, powerful carbon deposition resistance and certain sulfur resistance, and may be used in hydrogen cracking, hydrogenation, hydrogen modification, etc. of fraction oil with high selectivity to middle fraction oil.

Description

Technical field: [0001] The invention relates to a noble metal catalyst for hydrocracking of hydrocarbons and a preparation method thereof, in particular to a hydrocracking catalyst for producing middle distillates and a preparation method thereof. Background technique: [0002] At present, all refineries in the world are facing the problem of increasingly heavy raw materials and poorer quality. The hydrocracking process has become one of the important means of lightening heavy oil. At the same time, the demand for middle distillates continues to grow worldwide, so the development of medium oil-type hydrocracking catalysts is becoming increasingly active. [0003] Hydrocracking catalysts are usually bifunctional catalysts, and the cracking function is provided by an acidic support, which can be an amorphous oxide (such as SiO 2 -Al 2 o 3 ), zeolite molecular sieves and heat-resistant inorganic oxides (such as alumina) or their mixtures. The components providing the hydro...

Claims

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Application Information

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IPC IPC(8): C10G47/16
Inventor 刘雪玲王继锋申柯王旭梁相程温德荣
Owner CHINA PETROLEUM & CHEM CORP
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