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Process for producing high-octane gasoline through raw material rich in C4, C5 and C6 alkane

A C4C5C6alkane and process technology, applied in the field of high-octane gasoline production, can solve the problems of low liquid yield, low reaction temperature of alkane, harsh reaction conditions, etc.

Active Publication Date: 2013-10-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The inventor thinks through above analysis, C 4 / C 5 / C 6 In the alkanes reforming technology, the isomerization and aromatization of alkanes are mainly carried out, but the economic benefits are seriously affected due to harsh reaction conditions and low liquid yield.
The octane number of olefins in gasoline is higher than that of alkanes, but their stability is poor, and the environmental protection standards are becoming more and more stringent for them, but the reaction temperature of olefins in polymerization, cyclization, alkylation, aromatization and other reactions is lower than that of alkanes

Method used

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  • Process for producing high-octane gasoline through raw material rich in C4, C5 and C6 alkane
  • Process for producing high-octane gasoline through raw material rich in C4, C5 and C6 alkane

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The dehydrogenation catalyst adopts the HTPB-DH dehydrogenation catalyst of Haitai Company, in which Al 2 o 3 As the carrier, Pt and Cl are used as active components, wherein the mass content of Pt is 1%, the mass content of chlorine is 2%, and the specific surface area is 200m 2 / g, pore volume 0.5ml / g, diameter 1.59mm, bulk density 0.6g / cm 3 .

[0040] The aromatization catalyst adopts the method of CN1586721A catalyst preparation example 3 and adds the active component Ni. The specific preparation steps are as follows: use hydrothermal synthesis to produce high-silica zeolite raw powder with a grain size of less than 500nm, and dry it at 110°C for 3 hours. Dry at 550°C for 24 hours. Then according to 80g zeolite 20g alumina dry basis and 3.66g dried Ni(NO 3 ) 2 The powders were manually mixed evenly, then kneaded with 10% dilute nitric acid, extruded with a twin-screw extruder, dried at 110°C for 3 hours, and then kept at 550°C for 3 hours. Then use 0.6 mol / L, ...

Embodiment 2

[0043] The dehydrogenation catalyst is provided by the Key Laboratory of Fine Chemical Industry of Xinjiang University with a load of 10% MoO 3 γ-Al 2 o 3 Catalyst, its preparation process is to take a certain amount of (NH 4 ) 6 Mo 7 o 24 4H 2 Impregnation of γ-Al after O was dissolved in hot water 2 o 3 , stirred and evaporated to dryness, dried at 120°C for 10h, and finally calcined at 550°C for 4h to obtain the catalyst.

[0044] The aromatization catalyst adopts the chromium-containing ZSM-5 zeolite molecular sieve catalyst provided by Dalian University of Technology, and its carrier is Al 3 o 2 , wherein the chromium content is 4%, the ZSM-5 zeolite molecular sieve content is 25%, the shape is a cylindrical strip with a diameter of 1.5mm and a length of 3mm, the bulk density is 0.65g / ml, and the specific surface area is 340m 2 / g, the pore volume is 0.25ml / g.

[0045] The raw material rich in C4C5C6 alkane adopts raw material B, and the mass ratio of hydrogen ...

Embodiment 3

[0047] The dehydrogenation catalyst is prepared by the method of Example 1 in the patent CN101618319. Dissolve 2.24 grams of calcium oxide and 3.1 grams of polyethylene glycol in 120ml of deionized water, heat treatment at 240°C for 24 hours, and burn it at 600°C for 5 hours, then add it with an appropriate amount of absolute ethanol, 7.2 grams of chromium nitrate, 6 grams of trisodium Aluminum oxide is mixed evenly, dried for 12 hours, ground evenly, burned at 550°C for 3 hours, and then used for later use.

[0048] The aromatization catalyst adopts OCTC-02 gasoline aromatization catalyst from Zibo Xinhong Chemical Co., Ltd. Its main components are 40% ZSM-5 molecular sieve and 6% cobalt, and the rest is Al 2 o 3 . Its shape is a cylindrical bar with a diameter of 2.5 mm and a length of 3 mm, with a bulk density of 0.70 g / ml and a compressive strength of 90 N / cm.

[0049] The raw material rich in C4C5C6 alkane adopts raw material C, and the mass ratio of hydrogen entering...

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Abstract

The invention provides a process for producing a high-octane gasoline component. The process comprises the following steps of: mixing enriched C4, C5 and C6 alkane with hydrogen; feeding the mixture into a reactor containing a dehydrogenation catalyst and performing an alkane dehydrogenation reaction; treating a dehydrogenation product through a non-condensable gas separating device; then mixing with a raw material rich in alkane; and then transferring the mixture into a reactor containing an aromatization catalyst and aromizing to produce a low-benzene high-octane gasoline component rich in aromatic hydrocarbon. The modified gasoline is high in content of non-benzenoid aromatics, lower in content of benzene and low in content of olefin.

Description

technical field [0001] The invention provides a process for producing high-octane gasoline through steps such as catalytic dehydrogenation of C4C5C6 alkanes in a refinery, mixing with olefin-rich raw materials and aromatization. Background technique [0002] With the rapid development of my country's national economy and the continuous increase of car ownership, the demand for vehicle fuel gasoline is increasing. At the same time, with the increasingly stringent environmental protection requirements on gasoline quality standards, the quality standards of motor gasoline are developing in the direction of low sulfur content, low olefin content, low vapor pressure and high octane number. The market has a great demand for increasing the production of high-quality gasoline and low-sulfur, low-olefin content, and high-octane gasoline blending components. The technology development in this area has also become a hot issue of concern to domestic research institutes and enterprises. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
Inventor 黄剑锋马安孙世林李吉春李长明马应海程亮亮刘飞王玫田亮王小强许江孔祥冰张松显杨利斌
Owner PETROCHINA CO LTD
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