Hydrocracking method for preparation of high-octane naphtha

A hydrocracking and hydrogenation activity technology, applied in chemical instruments and methods, petroleum industry, hydrotreating process, etc., can solve the problems of high yield, harsh operating conditions, influence of catalyst service life, etc., and achieve the adaptability of raw materials Strong, good product quality, high octane effect

Active Publication Date: 2013-05-01
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because single-stage hydrocracking is used to produce gasoline, harsh operating conditions are required, the yield of low-value gas is high, and the service life of the catalyst will also be affected

Method used

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  • Hydrocracking method for preparation of high-octane naphtha

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1, preparation contains the catalyst CA of composite molecular sieve

[0051] The modified Y molecular sieve NTY (relative crystallinity is 97%, unit cell parameter is 2.432nm, specific surface area is 781m 2 / g, SiO 2 / Al 2 o 3 The molar ratio is 12.9, the total infrared acid is 1.06mmol / g) and SAPO-11 molecular sieve (the pore volume is 0.18ml / g, the specific surface area is 223m 2 / g) according to the mass ratio of 1:1 mixed to obtain a composite molecular sieve, take 200 grams of composite molecular sieve, MoO 3 (Based on the mass of molybdenum oxide) 37.5 grams, Ni(NO 3 ) 2 ·6H 2 O (based on the mass of nickel oxide) 145 grams, amorphous silicon aluminum (SiO 2 Content 50wt%, pore volume 0.85ml / g, specific surface area 370m 2 / g, dry basis 75wt%) 35 grams, macroporous alumina (pore volume 1.0ml / g, specific surface area 400m 2 / g, 75wt% on a dry basis) 80 grams, binder (30wt% on a dry basis, the molar ratio of nitric acid to small-pore alumina is...

Embodiment 2

[0054] Embodiment 2, preparation contains the catalyst CB of composite molecular sieve

[0055] NTY (relative crystallinity is 97%, unit cell parameter is 2.432nm, specific surface area is 781m 2 / g, SiO 2 / Al 2 o 3 The molar ratio is 12.9, the total infrared acid is 1.06mmol / g) and SAPO-11 molecular sieve (the pore volume is 0.18ml / g, the specific surface area is 223m 2 / g) according to the mass ratio of 3:1 mixed to obtain a composite molecular sieve, take 200 grams of composite molecular sieve, MoO 3 37.5 grams, Ni(NO 3 ) 2 ·6H 2 O145 grams, amorphous silicon aluminum (SiO 2 Content 50wt%, pore volume 0.85ml / g, specific surface area 370m 2 / g, dry basis 75wt%) 35 grams, macroporous alumina (pore volume 1.0ml / g, specific surface area 400m 2 / g, 75wt% on a dry basis) 80 grams, binder (30wt% on a dry basis, the molar ratio of nitric acid to small-pore alumina is 0.3, the pore volume of small-pore alumina is 0.46ml / g, and the specific surface area is 280m 2 / g) 66.5 g...

Embodiment 3

[0058] Embodiment 3, preparation contains the catalyst CC of composite molecular sieve

[0059] NTY (relative crystallinity is 97%, unit cell parameter is 2.432nm, specific surface area is 781m 2 / g, SiO 2 / Al 2 o 3 Molar ratio is 12.9, total infrared acid is 1.06mmol / g) and SAPO-11 molecular sieve (pore volume is 0.18ml / g, specific surface area is 223m 2 / g) by mass ratio 3:1 mixed to obtain a composite molecular sieve, get 160 grams of composite molecular sieve, MoO 3 37.5 grams, Ni(NO 3 ) 2 ·6H 2 O145 grams, amorphous silicon aluminum (SiO 2 Content 50wt%, pore volume 0.85ml / g, specific surface area 370m 2 / g, dry basis 75wt%) 35 grams, macroporous alumina (pore volume 1.0ml / g, specific surface area 400m 2 / g, dry basis 75wt%) 133 grams, binder (dry basis 30wt%, the mol ratio of nitric acid and small-pore alumina is 0.3, the pore volume of small-pore alumina is 0.46ml / g, specific surface area is 280m 2 / g) 66.5 grams are placed in a roller compactor for kneading a...

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Abstract

The invention discloses a hydrocracking method for preparation of high-octane naphtha. The method comprises the following steps: (1), in a first reactor, heavy distilled oil conducts hydrofining reaction under the catalysis of hydrofining catalyst; (2), products generated during hydrofining reaction enter a second reactor, at the upper layer of the second reactor, the products generated during hydrofining reaction conduct hydrocracking reaction under the catalysis of hydrocracking catalyst, and the products during hydrocracking reaction enter the lower layer of the second reactor and conduct cracking and isomerization reaction under the catalysis of the catalyst containing composite molecular sieve; and (3), the products generated during cracking and isomerization reaction are separated, so that the high-octane naphtha is obtained. The method has the advantages that the raw material adaptability is strong, the process is simple, the product quality is good, and the octane of light naphtha is high.

Description

technical field [0001] The invention relates to a hydrocracking method for preparing high-octane naphtha. Background technique [0002] With the rapid development of the national economy, people's demand for light fuel oil is increasing day by day, and with the progress of society, the environmental requirements for fuel oil are becoming increasingly stringent. The quantity and quality of the primary processing of petroleum cannot meet people's needs. The conversion of heavy distillate oil into high-quality light fuel through secondary processing of petroleum not only makes full use of limited petroleum resources, but also alleviates the burden of light distillate oil. Market demand. Hydrocracking technology has strong adaptability to raw materials, flexible production plan, and high product quality. It is one of the main means of petroleum secondary processing. The blending component of gasoline, but the light naphtha produced by hydrocracking currently has a low octane n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85C10G65/12
Inventor 孟繁梅宋君辉吴晶晶刘丽芝
Owner CHINA NAT OFFSHORE OIL CORP
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