Hydrogenation method for producing catalytic reforming raw material

A technology for catalytic reforming and raw materials, applied in refining to remove heteroatoms, etc., can solve problems such as high investment and operation costs and complicated processes

Active Publication Date: 2007-02-14
CHINA PETROLEUM & CHEM CORP
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  • Abstract
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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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  • Hydrogenation method for producing catalytic reforming raw material

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Embodiment

[0033] A catalytically cracked gasoline was subjected to fractional distillation, and the mid-weight gasoline fraction (distillation range 79-175°C) was extracted as feedstock A; a straight-run naphtha was used as feedstock B. The properties of the feedstock are shown in Table 1.

[0034] In this embodiment, the reactor is divided into two beds, a quench box and an oil-gas distributor are arranged between the two beds, the first bed and the second bed are filled with the same hydrofinishing catalyst, and the first bed hydrofinishing catalyst The loading volume ratio of the two-bed hydrotreating catalyst and the second-bed hydrotreating catalyst is 55:45, and the total catalyst loading volume of the reactor is 37.1m 3 .

[0035] The raw material oil A and hydrogen enter the first bed of the reactor after being heated to carry out hydrofining reaction. The inlet temperature of the first bed is 250°C, and the outlet temperature of the first bed is 370°C. After the heat exchange,...

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Abstract

The invention is a hydrogenating method for producing catalytic reforming raw materials, cutting secondary processed gasoline as light gasoline fractions, medium gasoline fractions and heavy gasoline fractions, where the medium gasoline fraction and hydrogen gas together enter in first reacting region to react by the action of hydrofining catalyst, the resultant effluent is not separated but directly mixes with virgin naphtha to enter in second reacting region so as to react by the action of hydrofining catalyst, the corresponding resultant effluent is cooled and separated, where the extracted hydrogen-rich gas is recycled and the extracted liquid enters in a distilling 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 the method of refining hydrocarbon oil in the presence of hydrogen, more specifically, it is a method of hydrogenation 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, nitroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/02
Inventor 戴立顺金欣屈锦华牛传峰胡云剑夏国富卫剑习远兵
Owner CHINA PETROLEUM & CHEM CORP
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