Method for producing high-octane gasoline through naphtha

A technology for high-octane gasoline and naphtha, which is applied in the petroleum industry, hydrocarbon oil treatment products, and hydrocarbon oil treatment. It can solve unrelated problems and achieve the goals of increasing gasoline yield, reducing content, and optimizing gasoline composition. Effect

Active Publication Date: 2019-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But none of the above methods involves the original methylcyclopentane (RON=91.3), 2,2-dimethylpentane (RON=92.8), 2,4-dimethylpentane (RON =83.1), 2,2,3-trimethylbutane (RON=100.0), cyclohexane (RON=83.0) and other high-octane component optimization utilization problems

Method used

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  • Method for producing high-octane gasoline through naphtha
  • Method for producing high-octane gasoline through naphtha
  • Method for producing high-octane gasoline through naphtha

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Experimental program
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Embodiment approach

[0031] In one embodiment, the catalytic reforming catalyst is prepared by a conventional method. Specifically, a shaped inorganic oxide carrier, such as a spherical or strip-shaped carrier, can be prepared first, and then impregnated to introduce the first metal component and halogen, if The catalyst contains the second metal component and / or the third metal component, preferably the second metal component and / or the third metal component are introduced into the carrier first, and finally the first metal component and halogen are introduced, and all The carrier after the metal component is dried and calcined at 450-650° C. to obtain an oxidized catalytic reforming catalyst. The catalytic reforming catalyst in an oxidized state needs to be reduced in a hydrogen-containing atmosphere at 315-650°C before use to obtain a catalytic reforming catalyst in a reduced state.

[0032] In the present invention, the second fractionation in step (4) is used to obtain the second light fracti...

example

[0056] (1) Hydrofining of naphtha raw materials.

[0057] In a 20 milliliter fixed-bed continuous flow reactor, 20 milliliters of hydrofinishing catalyst A is filled, on a dry basis, hydrofinishing catalyst A contains 0.03 mass % of CoO, 2.0 mass % of NiO, and 18.5 mass % of WO 3 , 0.5% by mass of Cl and 78.97% by mass of Al 2 o 3 .

[0058] The naphtha feedstock whose composition and properties are shown in Table 1 was heated at 290°C, pressure 2.0MPa, hydrogen / hydrocarbon volume ratio 200:1, feed volume space velocity 8.0h -1 Under the condition of passing through in the reactor of above-mentioned packing catalyst A to carry out hydrorefining. The reaction product was sent to a water cooler, separated into gas-liquid two phases, measured separately and analyzed for composition. The composition and properties of the hydrorefined naphtha obtained after hydrofining are shown in Table 2.

[0059] (2) The first fractionation of hydrotreated naphtha.

[0060] In the step (1),...

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Abstract

The invention relates to a method for producing high-octane gasoline through naphtha. The method comprises the steps: a naphtha raw material is subjected to hydrorefining, primary fractionation and secondary fractionation; methylcyclopentane, cyclohexane and multibranched paraffin are directly separated from the naphtha to serve as gasoline components; and then first heavy ends obtained through primary fractionation are subjected to catalytic reforming, second light ends obtained through secondary fractionation are subjected to an isomerization reaction to obtain a gasoline component, and benzene in the naphtha can further be hydrogenated to form the cyclohexane to be isomerized. According to the method, the gasoline yield can be increased, gasoline composition is optimized, the content ofisoparaffin and cycloparaffin in the gasoline is increased, and the content of arene and n-paraffin is decreased.

Description

technical field [0001] The invention relates to a method for producing high-octane gasoline from naphtha. Background technique [0002] Modern car engines require gasoline with a high octane rating. Aromatics and olefins are important high-octane gasoline blending components, but aromatics and olefins are not easy to burn completely, and will enter the atmosphere with vehicle exhaust, which is one of the important factors causing air pollution. Due to environmental issues, the restrictions on olefins and aromatics in high-octane gasoline are becoming more and more stringent. Multi-branched isoparaffins and certain cycloalkanes such as methylcyclopentane not only have a higher octane number, but also burn relatively completely. As the "ultimate blending component" for future gasoline upgrades, their role is becoming increasingly prominent. [0003] Naphtha is a mixture of various hydrocarbons such as normal paraffins, isoparaffins, naphthenes and aromatics. Naphtha can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/305C10G2400/02
Inventor 刘洪全马爱增张秋平于中伟
Owner CHINA PETROLEUM & CHEM CORP
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