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Method and device for producing high aromatic content gasoline by upgrading Mtp by-product mixed aromatics, high aromatic content gasoline and application thereof

A technology of mixed aromatics and high aromatics, applied in the field of aromatics chemical industry, can solve the problems of unable to quickly increase aromatics content, unstable aromatics content, high investment cost of equipment, etc., achieve the effect of reducing aromatics content, increasing olefin content, and reducing production cost of equipment

Active Publication Date: 2022-07-26
CHINA ENERGY GRP NINGXIA COAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an MTP by-product mixed Method and device for producing gasoline with high aromatics content by upgrading aromatics, gasoline with high aromatics content and application thereof

Method used

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  • Method and device for producing high aromatic content gasoline by upgrading Mtp by-product mixed aromatics, high aromatic content gasoline and application thereof
  • Method and device for producing high aromatic content gasoline by upgrading Mtp by-product mixed aromatics, high aromatic content gasoline and application thereof
  • Method and device for producing high aromatic content gasoline by upgrading Mtp by-product mixed aromatics, high aromatic content gasoline and application thereof

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Embodiment approach

[0049] According to a preferred embodiment of the present invention, the device for upgrading the MTP by-product mixed aromatics to produce gasoline with high aromatics content is as follows: figure 1 As shown, the device includes: a rectifying tower, a heating furnace, a fixed-bed reactor, a cooling tower and a product tank that are communicated in sequence; the rectifying tower is used to rectify the mixed aromatics produced by MTP to obtain the heavy components and Mixed light hydrocarbons with distillation range <165°C; the heating furnace is used for heating the mixed light hydrocarbons to obtain heated mixed light hydrocarbons; the fixed bed reactor is used for mixing the heated mixed light hydrocarbons with The aromatization catalyst is contacted to perform an aromatization reaction to obtain an aromatized product; the cooling tower is used to cool the aromatized product to obtain gas phase components and gasoline with high aromatic content; the product tank is used for ...

Embodiment 1

[0056] (1) carry out rectification of MTP by-product mixed aromatics in a rectifying tower to obtain mixed light hydrocarbons and heavy components with a distillation range of <165 ° C, wherein, the theoretical plate number of the rectifying tower is 15, and the conditions of rectification Including: the reflux ratio is 5:1, the extraction rate is 15mL / min, and the heating rate is 0.5℃ / min;

[0057] (2) adjusting the space velocity of the mixed light hydrocarbons obtained in step (1) to be 1h -1 , and pressurized 1.5MPa by the feed pump and transported to a 350 ℃ heating furnace for heating, and then entered a fixed bed reactor equipped with ZSM-5 strip catalyst for aromatization reaction to obtain aromatization products; wherein, The conditions of the aromatization reaction include: the temperature of the catalyst bed is 450°C, and the temperature of the column core is 460°C;

[0058] (3) the aromatization product obtained in step (2) is cooled in a cooler to obtain high aro...

Embodiment 2

[0063] (1) carry out rectification of MTP by-product mixed aromatics in a rectifying tower to obtain mixed light hydrocarbons and heavy components with a distillation range <165 ° C, wherein, the theoretical plate number of the rectifying tower is 30, and the conditions of the rectifying Including: the reflux ratio is 8:1, the extraction rate is 25mL / min, and the heating rate is 0.5℃ / min;

[0064] (2) adjusting the space velocity of the mixed light hydrocarbons obtained in step (1) to be 1h -1 , and pressurized 1.5MPa by the feed pump and transported to a 300 ℃ heating furnace for heating, and then entered a fixed bed reactor equipped with ZSM-5 strip catalyst for aromatization reaction to obtain aromatization products; wherein, The conditions of the aromatization reaction include: the temperature of the catalyst bed is 350°C, and the temperature of the column core is 360°C;

[0065] (3) the aromatization product obtained in step (2) is cooled in a cooler to obtain high aroma...

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Abstract

The invention relates to the technical field of aromatics chemical industry, in particular to a method and a device for producing gasoline with high aromatics content by upgrading MTP by-product mixed aromatics, a gasoline with high aromatics content and applications thereof. The method comprises the following steps: (1) rectifying the mixed aromatic hydrocarbons produced by MTP to obtain heavy components and mixed light hydrocarbons with a distillation range of <165°C; (2) in the presence of an aromatization catalyst, rectify the mixed light hydrocarbons Aromatization reaction is carried out after heating, and the obtained aromatization product is cooled to obtain gas phase components and gasoline with high aromatic content. The method rectifies the mixed aromatic hydrocarbons, reduces the content of colloid and mechanical impurities in the mixed aromatic hydrocarbons, and can effectively prolong the service life of the catalyst; at the same time, the rectified mixed light hydrocarbons are subjected to an aromatization reaction, thereby effectively increasing the high aromatic hydrocarbon content The content of aromatic hydrocarbons in gasoline.

Description

technical field [0001] The invention relates to the technical field of aromatics chemical industry, in particular to a method and a device for producing gasoline with high aromatics content by upgrading MTP by-product mixed aromatics, a gasoline with high aromatics content and applications thereof. Background technique [0002] The MTP by-product mixed aromatics produced by the German Lurgi company's process technology is mainly composed of olefins, alkanes, naphthenes and aromatics, of which the content of aromatics is generally 20-60%, and the content of impurities is very small, basically free of Benzene (<0.5%), low S and N content (<1ppm), octane number above 96%, but distillation range, actual gum and induction period and other indicators still do not meet the requirements of the national VI standard, and the price is lower than that of finished gasoline . [0003] New mixed aromatics upgrading methods, such as: GTO technology, selective hydrogenation and aromat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/02
CPCC10G53/02
Inventor 张静郭守敬段永亮张安贵安良成刘记磊马超梁雪美王慧琴吕兆海何金学白天忠李艳张慧佳苏星宇
Owner CHINA ENERGY GRP NINGXIA COAL IND CO LTD
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