Method of producing catalytic reforming raw material

A technology for catalytic reforming and raw materials, applied in refining to remove heteroatoms, etc., can solve the problems of complex process and high investment and operating costs

Active Publication Date: 2007-02-14
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Using this method to obtain reformate must go through two hydrotreating processes, so

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The raw material used in this embodiment is the same as the raw material A used in Comparative Example 1. Feed oil A is contacted with hydrofinishing catalyst G and hydrofinishing catalyst S in sequence to carry out olefin saturation, hydrodesulfurization and hydrodenitrogenation reactions, and the reaction effluent is cooled, separated and removed to obtain naphtha products. The loading volume ratio of the hydrofinishing catalyst G and the hydrofinishing catalyst S is 40:60. Average reaction temperature, volume space velocity and hydrogen oil volume ratio in the reaction condition of embodiment 1 are identical with comparative example 1, and reaction pressure drops to 2.0MPa, and its reaction condition and product property are as shown in table 2.

[0033] It can be seen from Table 2 that the sulfur and nitrogen contents in the naphtha product oil are both less than 0.5 μg / g, meeting the feed requirements of the catalytic reforming unit.

Embodiment 2

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

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

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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] This invention pertains to a process for the refining of hydrocarbon oils in the presence of hydrogen, and more particularly to a process for the production of catalytic reforming feedstock. Background technique [0002] According to different sources, gasoline can be roughly divided into two categories, namely, straight-run gasoline and secondary processed gasoline. Secondary processed gasoline mainly includes catalytic cracking gasoline, coking gasoline, hydrocracking 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 have 100% by weight of FCC gasoline. Therefore, how to reduce the sulfur and olefin content of FCC gasoline is the key point for refineries to produce clean gasoline that meets the new environmental protection standards. Reformed gasoline is basically sulfur-free, nitrogen-free, olefi...

Claims

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Application Information

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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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