Hydrogenation method for production of high quality middle distillate oil

A technology for middle distillates and fractions, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, etc. It can solve the problems of low yield of middle distillates, achieve the effects of increasing yield, improving selectivity and saving consumption

Active Publication Date: 2012-12-26
CHINA PETROLEUM & CHEM CORP +1
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  • Claims
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Problems solved by technology

[0008] The purpose of the present invention is to provide a hydrogenation method for producing high-quality middle distillates on the basis of the prior art, so as to solve the problem of low yield of middle distillates in the hydrocracking method of the prior art

Method used

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  • Hydrogenation method for production of high quality middle distillate oil

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Effect test

Embodiment 1

[0036] At the reaction pressure of 14.5MPa, the reaction temperature of hydrogenation reactor I is 380 °C, the reaction temperature of hydrogenation reactor II is 370 °C, and the volume space velocity of hydrogenation reactor I (for fresh raw materials) is 1.8h. -1 , the hydrogenation reactor II volumetric space velocity (total feed to the hydrogenation reactor II) is 1.3 h -1 Under the reaction conditions of the present invention, with the hydrocracking method provided by the present invention, a test was carried out using the raw material A. The ratio of the fresh feed oil entering the hydrogenation reactor I and the hydrogenation reactor II is 4:1, and all the tail oil fractions are recycled back to the hydrogenation reactor II. Hydrogenation Reactor II Reaction Atmosphere H 2 S partial pressure is 0.03MPa, NH 3 The partial pressure was 0.006MPa. The test results are shown in Table 2. Based on 100% fresh raw materials, the yields of product jet fuel and diesel are 42.33%...

Embodiment 2

[0038] At the reaction pressure of 14.5MPa, the reaction temperature of hydrogenation reactor I is 380 °C, the reaction temperature of hydrogenation reactor II is 380 °C, and the volume space velocity of hydrogenation reactor I (for fresh raw materials) is 1.8h -1 , the hydrogenation reactor II volumetric space velocity (total feed to the hydrogenation reactor II) is 1.3 h -1 Under the reaction conditions of the present invention, with the hydrocracking method provided by the present invention, a test was carried out using the raw material A. The ratio of the fresh feed oil entering the hydrogenation reactor I and the hydrogenation reactor II is 2:1, and all the tail oil fractions are recycled back to the hydrogenation reactor II. Hydrogenation Reactor II Reaction Atmosphere H 2 S partial pressure is 0.05MPa, NH 3 The partial pressure was 0.01MPa. The test results are shown in Table 3. Based on 100% fresh raw materials, the yields of product jet fuel and diesel are 41.98% a...

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Abstract

The invention relates to a hydrogenation method for production of high quality middle distillate oil. The method consists of: adding fresh raw oil into a hydrogenation reactor I and a hydrogenation reactor II in a cocurrent flow way; filling the hydrogenation reactor I with an amorphous hydrocracking catalyst, and filling the hydrogenation reactor II with a molecular sieve hydrocracking catalyst; separating the reaction effluent of the hydrogenation reactor I to obtain light distillates and tail oil distillates; and bringing all or part of the tail oil distillates into the hydrogenation reactor II, and introducing the reaction effluent of the hydrogenation reactor II and part of the raw oil into the hydrogenation reactor I together. The method provided by the invention is in favor of enhancing the yield of the middle distillate oil, increasing the overall reaction space velocity, reducing the reactor volume of the whole equipment, thus lowering the investment.

Description

technical field [0001] The present invention belongs to a hydrocracking method for obtaining low boiling point hydrocarbon oil in the presence of hydrogen. Background technique [0002] With the deterioration of crude oil quality year by year and the increasingly strict environmental protection requirements around the world, hydrocracking process, one of the main means for secondary processing of crude oil and lightening of heavy oil, has strong applicability of raw materials, flexible production plans, and liquid With high product yield and good product quality, it plays an increasingly important role in the deep processing of sulfur-containing and high-sulfur crude oil to produce clean fuel, and its application range is also increasingly extensive. [0003] In recent years, the market demand for various oil products, especially high-quality middle distillate products, has continued to grow, and the pressure on refineries to produce high-quality middle distillate products h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
Inventor 陈元君胡志海董建伟董松涛赵阳王子文龙湘云聂红
Owner CHINA PETROLEUM & CHEM CORP
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