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Low temperaure catalyst for producing intermediate fraction oil with heavy alkane and its preparation method

A technology for middle distillates and heavy alkanes, applied in catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as high reaction temperature, high hydrothermal treatment temperature, high temperature resistance of high temperature furnace, etc., to achieve Good combustion performance, improved yield, high activity effect

Inactive Publication Date: 2003-01-08
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] EP0028938A1 discloses a medium-oil type hydrocracking catalyst for crude oil processing, which is characterized by the use of Yili Y-type zeolite, and its preparation process includes SiO 2 / Al 2 o 3 The molar ratio is 4.5-9, and the specific surface area is 350m 2 / g of raw material zeolite, hydrothermal treatment at 0.2-10 atmospheres, 725-870 °C, due to the high temperature of the zeolite hydrothermal treatment, the high temperature resistance requirements of the high-temperature furnace during the preparation process, and high energy consumption
In addition, although the catalyst has a medium oil selectivity of 86%, the conversion rate is only 60%, and the reaction temperature is as high as 407°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Take 500g NaY zeolite (produced by Wenzhou Catalyst Factory), add to 2L concentration of 2M NH 4 NO 3 solution, stirred at 90°C, ion exchanged for 2 hours, and exchanged 5 times in total, then filtered, washed until neutral, and dried to obtain NH 4 Y zeolite;

[0027] (2) Ni(NO 3 ) 2 ·6H 2 O 174 grams, prepared as a 0.6mol / L solution, added dropwise ammonia to PH=11.

[0028] (3) NH 4 300 grams of Y zeolite is impregnated in the above solution, stirred evenly, and placed for more than 12 hours to obtain Y zeolite impregnated with hydrogenation metal;

[0029] (4) drying the Y zeolite impregnated with the hydrogenation metal at 90°C for 6 hours, and roasting at 400°C for 5 hours;

[0030] (5) Dissolve 45 grams of phosphotungstic acid in 210 grams of water, immerse the substance obtained in (4) in it, stir evenly, leave it for more than 12 hours, and dry at 90°C for 6 hours to obtain substance A;

[0031] (6) Mix 500 grams of alumina and substance A evenly, a...

Embodiment 2

[0036] (1) Take 500g NaY zeolite (produced by Wenzhou Catalyst Factory), add to 2L concentration of 2M NH 4 NO 3 In the solution, stirred at 90°C, ion exchanged for 2 hours, and exchanged 5 times in total, then filtered, washed until neutral, and dried.

[0037] (2) Ni(NO 3 ) 2 ·6H 2 O 291 grams, prepared as a solution of 0.8mol / L, ammoniacal liquor was added dropwise to form dark blue transparent nickel ammonia solution, pH=13.

[0038] (3) NH 4 Immerse 250 grams of Y zeolite in the above solution, stir evenly, and place it for more than 12 hours.

[0039] (4) Dry at 100°C for 5 hours, and bake at 300°C for 6 hours.

[0040] (5) Dissolve 95 grams of phosphotungstic acid in 450 grams of water, immerse the substance obtained in (4) in it, stir evenly, and place it for more than 12 hours.

[0041] (6) Drying at 100° C. for 5 hours.

[0042] (7) Mix 450 grams of alumina and the material obtained in (6) evenly, add nitric acid solution, roll into a paste after sufficient t...

Embodiment 3

[0047] (1) Take 500g NaY zeolite (produced by Wenzhou Catalyst Factory), add to 2L concentration of 2M NH 4 NO 3 In the solution, stirred at 90°C, ion-exchanged for 2 hours, and exchanged 6 times in total, then filtered, washed until neutral, and dried.

[0048] (2) Ni(NO 3 ) 2 ·6H 2 O 213 grams, prepared as a solution of 0.67mol / L, ammoniacal liquor was added dropwise to form dark blue transparent nickel-ammonia solution, pH=12.

[0049] (3) NH 4 Immerse 225 grams of Y zeolite in the above solution, stir evenly, and place it for more than 12 hours.

[0050] (4) Dry at 110°C for 4 hours, and bake at 500°C for 4 hours.

[0051] (5) Dissolve 145 grams of phosphotungstic acid in 600 grams of water, immerse the substance obtained in (4) in it, stir evenly, and place it for more than 12 hours.

[0052] (6) Drying at 110° C. for 4 hours.

[0053] (7) Mix 400 grams of alumina and the material obtained in (6) evenly, add nitric acid solution, roll into a paste after sufficient...

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Abstract

There is a kind of low temperature catalyst of mid distillate in producing heavy alkenes, its weight percentage composing is Y zeolite 20%-40%, phosphor-tungsten mixed multi-acid or silicon-tungsten mixed multi-acid 5%-20%, nickel oxide 5-10%, alumina 40-60%. The surface of catalyst 250-450m2 / g, hole capacity 0.45-0.70 ml / g, TPD acidity 0.8-1.9 mmol / g. The catalyst in the invention has strong low-temperature reaction active and mid-oil selectivity to heavy alkenes, it applies to process of hydrogenation cracking which creates mid-distillate.

Description

[0001] Field: [0002] The invention belongs to a hydrocracking catalyst, in particular to a catalyst for processing heavy alkanes and producing middle distillates. Background technique: [0003] In recent years, in the face of the huge liquid fuel market brought about by economic growth and the depletion of oil resources, the deep processing of heavy alkanes in crude oil has become an important research topic. At the same time, with the maturity of coal / natural gas indirect liquefaction technology, especially the SMDS (Shell Middle Distillate Synthesis) process developed by Shell Company and the Synthol fluidized Fischer-Tropsch synthesis reactor developed by South Africa Sasol Company have achieved industrial-scale production, making coal / natural gas indirect liquefaction Liquefaction technology has become one of the most attractive approaches for liquid fuels in the post-petroleum industry era. However, the research on the deep processing of waxes produced by Fischer-Tropsc...

Claims

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Application Information

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IPC IPC(8): B01J29/08B01J37/00C10G47/02C10G57/02
Inventor 孙予罕任杰李到
Owner SYNFUELS CHINA TECH CO LTD
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