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Method of producing gasoline for car from synthetic naphtha

A naphtha, production vehicle technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process and other directions, can solve the problem of low octane number of synthetic naphtha, improve the overall economic benefits, and improve the octane number , the effect of low sensitivity

Active Publication Date: 2013-11-20
中国寰球工程有限公司辽宁分公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing motor gasoline by using the indirect coal liquefaction process to synthesize naphtha, which can effectively improve the octane number of synthetic naphtha and solve the problem of too low octane number of synthetic naphtha problem, to produce motor gasoline whose index reaches the "National Gasoline Quality Standard-Ⅵ", solve the production technology bottleneck problem of coal-to-oil enterprises, and improve the overall economic benefits of coal-to-oil enterprises

Method used

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  • Method of producing gasoline for car from synthetic naphtha
  • Method of producing gasoline for car from synthetic naphtha
  • Method of producing gasoline for car from synthetic naphtha

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Embodiment Construction

[0011] The main physicochemical properties of the naphtha synthesized by the coal indirect liquefaction process adopted in this embodiment are as follows:

[0012]

[0013] The concrete steps of the inventive method are as follows

[0014] ①Raw material pretreatment process:

[0015] The naphtha synthesized by the coal indirect liquefaction process is sent to the fractionation tower, and the components ≤ C4 are removed from the top of the tower, and the C5-C6 fraction is fractionated in the first line of the tower as the feed for the normal paraffin hydroisomerization process, and the bottom of the tower is obtained The ≥80°C distillate is used as the feed for the fixed bed reforming process.

[0016] ② Hydroisomerization process of n-paraffins:

[0017] The C5-C6 distillate from the first line of the tower is mixed with hydrogen and heated to a reaction temperature of 250-270°C, then enters a fixed-bed isomerization reactor and undergoes isomerization reaction under the ...

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Abstract

The invention discloses a method of producing gasoline for a car from naphtha. The method comprises the following steps: feeding the naphtha which is synthesized by a coal indirect liquefaction process into a fractionating tower for fractioning, wherein C5-C6 which is fractioned out by a tower line I is fed to a normal paraffin hydro-isomerization process for being treated; and feeding fraction which is not lower than 80 DEG C and obtained at the tower bottom to a fixed-bed catalytic reforming process for being treated; and mixing and feeding the oil, which is obtained by the normal paraffin hydro-isomerization process and the fixed-bed catalytic reforming process, into a degassing tower for degassing to obtain a car gasoline component at the tower bottom. According to the method of producing gasoline for a car from naphtha disclosed by the invention, the fixed-bed catalytic reforming process is adopted for converting C7-C9 alkane not lower than 80 DEG C in the synthetic naphtha into aromatic hydrocarbon; and the normal paraffin hydro-isomerization process is adopted for realizing the hydrocarbon isomerization of the C5-C6 normal paraffin in the synthetic naphtha. And therefore, the octane value of the synthetic naphtha is effectively improved, and the car gasoline with indexes reaching National Gasoline Quality Standard-VI is produced.

Description

1. Technical field [0001] The invention belongs to the technical field of gasoline production for vehicles, and in particular relates to a method for producing gasoline for vehicles using naphtha synthesized by an indirect coal liquefaction process. 2. Background technology [0002] In my country's indirect coal liquefaction production technology, synthetic naphtha is the product of synthetic cold trap oil after hydrogenation process, and is one of the main products in the production of synthetic oil from coal liquefaction. 22% of the total. Since a large amount of mono- and di-olefins are generated during the coal-to-liquids process, these olefins are converted into normal paraffins after hydrogenation and saturation, and the content of normal paraffins in the product synthetic naphtha is generally about 85%. The n-alkanes have a lower octane number, nC6 has an octane number (RON) of 26 and nC7 has an octane number (RON) of 0. The presence of a large amount of n-alkanes af...

Claims

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Application Information

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IPC IPC(8): C10G67/00
Inventor 金月昶曾蓬都浩韩建新
Owner 中国寰球工程有限公司辽宁分公司
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