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Method of producing middle distillate oil through hydrocracking

A middle distillate, hydrocracking technology, applied in chemical instruments and methods, hydrocarbon oil cracking, petroleum industry, etc., can solve problems such as low activity

Active Publication Date: 2013-08-21
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of the special topological structure of ITQ-21 molecular sieve, the catalyst can control >380°C and the conversion rate of distillate oil is 60wt% when dealing with vacuum distillate oil with a distillation range of 103-490°C, total sulfur of 2.5%, and total nitrogen of 1000μg / g. , reaction pressure 5.0MPa, space velocity 2.8h -1 , under the condition of hydrogen-oil ratio 1000:1, the reaction temperature is 400°C, the yield at 150-250°C is 27.4wt%, and the yield at 250-380°C is 39.0wt%. The catalyst has a higher yield of middle distillates, but Relatively low activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 2274g of P123 to 100L of 1.7M hydrochloric acid solution, raise the temperature to 40°C and stir at a constant temperature for 6 hours. After the template agent P123 is completely dissolved, add 4798g of ethyl orthosilicate, hydrolyze at a constant temperature for 16 hours, and heat up to 98°C for hydrothermal crystallization 36h. Then, filter, wash, dry at 120°C for 12h, and roast at 550°C for 4h. The product number is SBA-1, and the obtained SBA-1 molecular sieve is passed through N 2 Measured by adsorption-desorption, the specific surface area is 834m 2 / g, the pore volume is 1.12ml / g, and the average pore diameter is 8.82nm.

[0029] At 30°C, dissolve 576g of aluminum isopropoxide in 100L of 0.03M hydrochloric acid solution, then add 1272g of SBA-1 to the solution, stir for 12h, then add 434g of HY zeolite with a molar ratio of silicon to aluminum of 40, continue stirring for 2h, and filter , dried at 120°C for 12h, calcined at 550°C for 4h, product number ASB...

Embodiment 2

[0031] Take 2527g of P123 and add it to 100L of 2.0M hydrochloric acid solution, heat up to 40°C and stir at constant temperature for 6 hours. After the template agent P123 is completely dissolved, add 4495g of ethyl orthosilicate, hydrolyze at constant temperature for 12 hours, heat up to 100°C for hydrothermal crystallization 48h, then, filter, wash, dry at 120°C for 12h, and bake at 550°C for 4h. The product number is SBA-2. The obtained SBA-2 molecular sieve is passed through N 2 Measured by adsorption-desorption, the specific surface area is 822m 2 / g, the pore volume is 1.12ml / g, and the average pore diameter is 8.69nm.

[0032] At 40°C, dissolve 198g of aluminum isopropoxide in 100L of 0.015M hydrochloric acid solution, then add 1165g of SBA-2 to the solution, stir for 16h, then add 3538g of HY zeolite with a molar ratio of silicon to aluminum of 20, continue stirring for 4h, and filter , dried at 120°C for 12h, calcined at 550°C for 4h, code ASBAY-2, see Table 1 for p...

Embodiment 3

[0034] Take 2342g of P123 and add it to 100L of 1.5M hydrochloric acid solution, heat up to 35°C and stir at constant temperature for 6 hours. After the template agent P123 is completely dissolved, add 5645g of ethyl orthosilicate, hydrolyze at constant temperature for 24 hours, and heat up to 100°C for hydrothermal crystallization 48h, then, filter, wash, dry at 120°C for 12h, and roast at 550°C for 4h, the product number is SBA-3, and the obtained SBA-3 molecular sieve is passed through N 2 Measured by adsorption-desorption, the specific surface area is 804m 2 / g, pore volume 1.10ml / g, average pore diameter 8.68nm.

[0035] At 40°C, dissolve 598g of aluminum isopropoxide in 100L of 0.04M hydrochloric acid solution, then add 1465g of SBA-3 to the solution, stir for 16h, then add 1502g of HY zeolite with a molar ratio of silicon to aluminum of 6.5, continue stirring for 4h, and filter , dried at 120°C for 12h, calcined at 550°C for 4h, numbered ASBAY-3, see Table 1 for proper...

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PUM

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Abstract

The invention relates to a method of producing middle distillate oil through hydrocracking. A distillation range of raw materials is between 250-570 DEG C; a nitrogen content is 0.1-2000 [mu]g / g; and a catalyst is composed of 20-65 % of amorphous silica-alumina, 8-25 % of macroporous alumina, 8-25 % of an adhesive, 4-40 % of a composite molecular sieve, 1.5-5 % of an extrusion aid, 12-30 % of VIB-group metal oxides, 3-10 % of VIII-group metal oxides, and 0.1-5 % of VA-group metal oxides, wherein the composite molecular sieve is composed of an AlSBA-15 / Y mediated-microporous composite molecular sieve and a [beta]microporous molecular sieve. The catalyst is relatively high in catalytic activity and middle distillate oil selectivity, and can be used to produce heavy naphtha, jet fuel, diesel oil, tail oil, etc.; and the produced products are good in quality.

Description

technical field [0001] The invention relates to a method for producing middle distillate oil by hydrocracking using a meso-microporous composite molecular sieve hydrocracking catalyst. The distillation range of the raw material is 250°C-570°C, and the nitrogen content is 0.1μg / g-2000μg / g. Background technique [0002] Hydrocracking technology is one of the important technological means for deep processing of heavy oil. It can directly produce clean fuel for vehicles and high-quality chemical raw materials while lightening raw materials. It is the most effective process for utilizing crude oil resources. Hydrocracking technology has many advantages such as strong raw material adaptability, flexible processing scheme, high yield of liquid products, and good product quality. It is an indispensable means of heavy oil processing, which has been increasingly widely used in the world. At the same time, worldwide demand for middle distillates is growing, and refineries are under in...

Claims

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Application Information

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IPC IPC(8): C10G47/20B01J29/80
Inventor 吕倩孙发民戴宝琴秦丽红张志华赵东元田然牛国兴肖勇宋明娟王东青李海岩孙博孙宏磊夏恩冬陈书仙马守涛王刚熊玉平刘丽莹
Owner PETROCHINA CO LTD
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