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Method of producing catalytic reforming raw material

A technology of catalytic reforming and raw materials, applied in refining to remove heteroatoms, etc., can solve the problems of high investment and operation cost and complicated process.

Active Publication Date: 2009-01-07
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method to obtain reformate must go through two hydrotreating processes, so there are problems such as complicated process and high investment and operation costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The raw material used in this example is the same as the raw oil A used in Comparative Example 1. The feedstock oil A is sequentially contacted with the hydrorefining catalyst G and the hydrorefining catalyst S to perform olefin saturation, hydrodesulfurization, and hydrodenitrogenation reactions. The reaction effluent is cooled, separated and removed from impurities to obtain a naphtha product. The filling volume ratio of the hydrorefining catalyst G and the hydrorefining catalyst S is 40:60. The average reaction temperature, volumetric space velocity, and hydrogen-to-oil volume ratio in the reaction conditions of Example 1 are the same as those of Comparative Example 1, while the reaction pressure drops to 2.0 MPa. The reaction conditions and product properties are shown in Table 2.

[0033] It can be seen from Table 2 that the content of sulfur and nitrogen in the naphtha product oil is less than 0.5 μg / g, which meets the feed requirements of the catalytic reformer.

Embodiment 2

[0035] A catalytically cracked gasoline and a hydrogenated coking gasoline are mixed in a weight ratio of 66:34, and a mid-quality gasoline fraction (distillation range of 70 to 168°C) is obtained after fractionation, and then this mid-quality gasoline fraction is mixed with a direct Distillate naphtha was mixed at a weight ratio of 50:50 to obtain feedstock oil B, the properties of which are shown in Table 1. It can be seen from Table 1 that the nitrogen content in feed oil B is relatively high, reaching 17 μg / g.

[0036] The feedstock oil B is in contact with the hydrorefining catalyst G and the hydrorefining catalyst S in sequence, at a reaction pressure of 1.8MPa, an average reaction temperature of 300°C, and a volumetric space velocity of 3.0h -1 , The volume ratio of hydrogen to oil is 150Nm 3 / m 3 Under the conditions of olefin saturation, hydrodesulfurization and hydrodenitrogenation reactions, the reaction effluent is cooled, separated and removed from impurities to obtai...

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PUM

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Abstract

The invention is a method for producing catalytic reforming raw material, cutting secondary gasoline raw material into light gasoline fraction, medium gasoline fraction and heavy gasoline fraction, where the medium gasoline fraction, optional virgin naphtha and hydrogen gas contact with first hydrofining catalyst to make alkene saturated reaction, the resultant effluent is not separated but directly contacts with second hydrofining catalyst to make hydrodesulfurization and hydro- denitrogenation reactions, and the extracted hydrogen-enriched gas is recycled and the extracted liquid enters a distillation dehydrating tower and is purified to obtain naphtha. And it can process secondary gasoline with high sulfur, nitrogen and alkene contents, and provides qualified raw material with sulfur and nitrogen contents both less than 0.5 mug / g for catalytic reforming.

Description

Technical field [0001] The present invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, and more specifically, is a method for producing catalytic reforming feedstock. Background technique [0002] According to the different sources of gasoline, gasoline can be roughly divided into two categories, namely straight-run gasoline and secondary processed gasoline. Secondary processed gasoline mainly includes catalytic cracked gasoline, coking gasoline, hydrocracked gasoline, pyrolysis gasoline, and reformed gasoline. In my country, more than 80% by weight of the components in the gasoline pool come from FCC gasoline, and some refineries even 100% by weight are FCC gasoline. Therefore, how to reduce the sulfur and olefin content of FCC gasoline is the key to the refinery's production of clean gasoline that meets the new environmental standards. Reformed gasoline is basically sulfur-free, nitrogen-free, olefin-free, and has a high octane number. It is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/02
Inventor 戴立顺屈锦华习远兵何宗付胡云剑李明丰夏国富田鹏程
Owner CHINA PETROLEUM & CHEM CORP
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