Method and device for producing gasoline with high aromatic hydrocarbon content by modifying MTP byproduct mixed aromatic hydrocarbon, and gasoline with high aromatic hydrocarbon content 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: 2021-02-05
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 gasoline with high aromatic hydrocarbon content by modifying MTP byproduct mixed aromatic hydrocarbon, and gasoline with high aromatic hydrocarbon content and application thereof
  • Method and device for producing gasoline with high aromatic hydrocarbon content by modifying MTP byproduct mixed aromatic hydrocarbon, and gasoline with high aromatic hydrocarbon content and application thereof
  • Method and device for producing gasoline with high aromatic hydrocarbon content by modifying MTP byproduct mixed aromatic hydrocarbon, and gasoline with high aromatic hydrocarbon content and application thereof

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Embodiment approach

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

Embodiment 1

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

[0057] (2) the mixed light hydrocarbon that step (1) obtains is adjusted space velocity to be 1h -1 , and transported to a 350°C heating furnace by a feed pump at a pressure of 1.5MPa for heating, and then entered into a fixed-bed reactor equipped with a ZSM-5 strip catalyst for aromatization reaction to obtain an aromatization product; 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) cooling the aromatized product obtained in step (2) in a cooler to obtain gasoline S1 with high...

Embodiment 2

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

[0064] (2) the mixed light hydrocarbon that step (1) obtains is adjusted space velocity to be 1h -1 , and transported to a 300°C heating furnace by a feed pump at a pressure of 1.5 MPa for heating, and then entered into a fixed-bed reactor equipped with a ZSM-5 strip catalyst for aromatization reaction to obtain an aromatization product; 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) cooling the aromatized product obtained in step (2) in a cooler to obtain gasoline S2 with high aromatic...

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Abstract

The invention relates to the technical field of the aromatic hydrocarbon chemical industry, in particular to a method and a device for producing gasoline with a high aromatic hydrocarbon content by modifying a MTP byproduct, namely mixed aromatic hydrocarbon, and the gasoline with the high aromatic hydrocarbon content and application thereof. The method comprises the following steps: (1) rectifying the MTP byproduct, namely the mixed aromatic hydrocarbon to obtain a heavy component and mixed light hydrocarbon with a distillation range of less than 165 DEG C; and (2) in the presence of an aromatization catalyst, heating the mixed light hydrocarbon, carrying out an aromatization reaction, and cooling the obtained aromatization product to obtain a gas-phase component and the gasoline with thehigh aromatic hydrocarbon content. According to the invention, the mixed aromatic hydrocarbon is rectified, so the content of colloid and mechanical impurities in the mixed aromatic hydrocarbon is reduced, and the service life of the catalyst can be effectively prolonged; and meanwhile, the rectified mixed light hydrocarbon is subjected to an aromatization reaction, so the content of aromatic hydrocarbon in the gasoline with the high aromatic hydrocarbon content is effectively increased.

Description

technical field [0001] The invention relates to the technical field of aromatics chemical industry, in particular to a method and device for producing gasoline with high aromatics content by upgrading MTP by-product mixed aromatics, gasoline with high aromatics content and application thereof. Background technique [0002] The MTP produced by the technology of Lurgi company in Germany is a by-product of mixed aromatics. The main components are olefins, alkanes, naphthenes and aromatics. The content of aromatics is generally 20-60%, and the impurity content is very small, basically free of Benzene (<0.5%), low S and N content (<1ppm), octane number above 96%, but indicators such as distillation range, actual colloid and induction period do not meet the requirements of the National VI standard, and the price is lower than that of finished gasoline . [0003] New methods of upgrading mixed aromatics, such as: GTO technology, selective hydrogenation and aromatization tech...

Claims

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Application Information

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Patent Type & Authority Applications(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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