Hydrogenation production method of a kind of jet fuel

Abstract

The present invention discloses a jet fuel hydrogenation production method, which comprises that under a hydrorefining reaction condition, raw material oil, hydrogen and a hydrorefining catalyst contact, a gas phase stream is separated from the obtained effluent so as to obtain a liquid phase stream, the liquid phase stream, hydrogen and a hydrocracking catalyst contact under a hydrocracking reaction condition, and the jet fuel is separated from the obtained effluent, wherein the total aromatic hydrocarbon content in the raw material oil is more than or equal to 40 wt%, the saturation rate of the bicyclic aromatic hydrocarbon in the raw material oil is 45-85% through the hydrorefining reaction condition, and the saturation rate of the monocyclic aromatic hydrocarbon in the liquid phase stream is 60-95% through the hydrocracking reaction condition. According to the present invention, with the method, in the conventional fixed bed reactor, the high density jet fuel meeting the 6# jet fuel standard specified by GJB1603 can be produced even by using the poor quality catalytic cracking diesel fuel as the raw material.

Description

technical field

[0001] The invention relates to a hydrogenation production method of jet fuel, in particular to a method for processing hydrocarbon oil in the presence of hydrogen to produce jet fuel. Background technique

[0002] High-density jet fuel, also known as high-density jet fuel, is a type of jet fuel with high density (generally 0.835g / cm 3 Above), high volume calorific value (generally 35.8MJ / m 3 above) jet fuel. Compared with ordinary jet fuel (the density is generally 0.77-0.81g / cm 3 ) compared with high-density jet fuel can increase the calorific value per unit volume of the fuel. When the volume of the fuel tank is constant, it can effectively increase the energy of the fuel carried by the fuel tank, which is an important guarantee for the high-speed and long-range flight of aerospace vehicles. For example: the density is 845kg / m 3 (Volume calorific value is about 36×10 3 MJ / m 3 ) fuel with a density of 780kg / m 3 (Volume calorific value is about 33×10 ...

Examples

Embodiment 1

[0094] The feed oil A used in this example is catalytically cracked diesel oil, the properties of which are listed in Table 1.

[0095] This embodiment is carried out in two fixed-bed reactors, the first fixed-bed reactor is filled with a hydrofinishing catalyst, and the second fixed-bed reactor is filled with a hydrocracking catalyst and a supplementary hydrofinishing catalyst, wherein, The loading volume ratio of hydrofinishing catalyst, hydrocracking catalyst and supplementary hydrofinishing catalyst is 40:60:10; both hydrofinishing catalyst and supplementary hydrofinishing catalyst were purchased from Changling Branch of China Petroleum & Chemical Corporation The brand name of the catalyst is RS-2000, and the hydrocracking catalyst is the catalyst of the brand name RHC-5 purchased from Changling Branch of China Petroleum & Chemical Corporation.

[0096] This example refers to figure 1 The process shown produces jet fuel, and the specific process flow is as follows.

[00...

Embodiment 2

[0108] The feed oil B used in this example is catalytically cracked diesel oil, the properties of which are listed in Table 3.

[0109]This embodiment is carried out in two fixed-bed reactors, the first fixed-bed reactor is filled with a hydrofinishing catalyst, and the second fixed-bed reactor is filled with a hydrocracking catalyst and a supplementary hydrofinishing catalyst, wherein, The loading volume ratio of hydrofinishing catalyst, hydrocracking catalyst and make-up hydrofinishing catalyst is 60:40:10.

[0110] Hydrofinishing catalysts and make-up hydrofinishing catalysts were prepared as follows.

[0111] With 3000 grams of Silica Gel 955 commercial silica gel (U.S. Davison Chemical company product, SiO 2 The content is 99.8% by weight) and 75 grams of scallop powder are evenly mixed, and then mixed with 84 milliliters of nitric acid (concentration 65-68 weight percent, analytically pure, product of Shantou Xilong Chemical Factory) and 4200 milliliters of water. The ...

Embodiment 3

[0120] Jet fuel was produced in the same manner as in Example 2, except that the hydrofinishing catalyst used and the make-up hydrofinishing catalyst used were prepared as follows:

[0121] With 200 ml of dilute ammonia solution containing 21.9 g of ammonium paramolybdate (NH 3 The concentration is 10% by weight) to impregnate 200 grams of silica carrier S for 2 hours, then dry at 120° C. for 4 hours, and then bake at 460° C. for 4 hours to obtain a molybdenum-containing carrier loaded with molybdenum oxide. Then, the molybdenum-containing carrier was impregnated with 156 ml of an aqueous solution containing 13.3 g of cobalt nitrate and 4.4 g of nickel nitrate for 2 hours, followed by drying at 120° C. for 4 hours, and then calcining at 470° C. for 4 hours to obtain the hydrorefining catalyst. The composition of the catalyst was determined by X-ray fluorescence spectrometry, wherein, MoO 3 The content of NiO is 8.0% by weight, the content of NiO is 0.6% by weight, and the con...

technical field

[0001] The invention relates to a hydrogenation production method of jet fuel, in particular to a method for processing hydrocarbon oil in the presence of hydrogen to produce jet fuel. Background technique

[0002] High-density jet fuel, also known as high-density jet fuel, is a type of jet fuel with high density (generally 0.835g / cm 3 Above), high volume calorific value (generally 35.8MJ / m 3 above) jet fuel. Compared with ordinary jet fuel (the density is generally 0.77-0.81g / cm 3 ) compared with high-density jet fuel can increase the calorific value per unit volume of the fuel. When the volume of the fuel tank is constant, it can effectively increase the energy of the fuel carried by the fuel tank, which is an important guarantee for the high-speed and long-range flight of aerospace vehicles. For example: the density is 845kg / m 3 (Volume calorific value is about 36×10 3 MJ / m 3 ) fuel with a density of 780kg / m 3 (Volume calorific value is about 33×10 ...

Examples

Embodiment 1

[0094] The feed oil A used in this example is catalytically cracked diesel oil, the properties of which are listed in Table 1.

[0095] This embodiment is carried out in two fixed-bed reactors, the first fixed-bed reactor is filled with a hydrofinishing catalyst, and the second fixed-bed reactor is filled with a hydrocracking catalyst and a supplementary hydrofinishing catalyst, wherein, The loading volume ratio of hydrofinishing catalyst, hydrocracking catalyst and supplementary hydrofinishing catalyst is 40:60:10; both hydrofinishing catalyst and supplementary hydrofinishing catalyst were purchased from Changling Branch of China Petroleum & Chemical Corporation The brand name of the catalyst is RS-2000, and the hydrocracking catalyst is the catalyst of the brand name RHC-5 purchased from Changling Branch of China Petroleum & Chemical Corporation.

[0096] This example refers to figure 1 The process shown produces jet fuel, and the specific process flow is as follows.

[00...

Embodiment 2

[0108] The feed oil B used in this example is catalytically cracked diesel oil, the properties of which are listed in Table 3.

[0109]This embodiment is carried out in two fixed-bed reactors, the first fixed-bed reactor is filled with a hydrofinishing catalyst, and the second fixed-bed reactor is filled with a hydrocracking catalyst and a supplementary hydrofinishing catalyst, wherein, The loading volume ratio of hydrofinishing catalyst, hydrocracking catalyst and make-up hydrofinishing catalyst is 60:40:10.

[0110] Hydrofinishing catalysts and make-up hydrofinishing catalysts were prepared as follows.

[0111] With 3000 grams of Silica Gel 955 commercial silica gel (U.S. Davison Chemical company product, SiO 2 The content is 99.8% by weight) and 75 grams of scallop powder are evenly mixed, and then mixed with 84 milliliters of nitric acid (concentration 65-68 weight percent, analytically pure, product of Shantou Xilong Chemical Factory) and 4200 milliliters of water. The ...

Embodiment 3

[0120] Jet fuel was produced in the same manner as in Example 2, except that the hydrofinishing catalyst used and the make-up hydrofinishing catalyst used were prepared as follows:

[0121] With 200 ml of dilute ammonia solution containing 21.9 g of ammonium paramolybdate (NH 3 The concentration is 10% by weight) to impregnate 200 grams of silica carrier S for 2 hours, then dry at 120° C. for 4 hours, and then bake at 460° C. for 4 hours to obtain a molybdenum-containing carrier loaded with molybdenum oxide. Then, the molybdenum-containing carrier was impregnated with 156 ml of an aqueous solution containing 13.3 g of cobalt nitrate and 4.4 g of nickel nitrate for 2 hours, followed by drying at 120° C. for 4 hours, and then calcining at 470° C. for 4 hours to obtain the hydrorefining catalyst. The composition of the catalyst was determined by X-ray fluorescence spectrometry, wherein, MoO 3 The content of NiO is 8.0% by weight, the content of NiO is 0.6% by weight, and the con...

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