Preparation method of aromatic hydrocarbon oil

An aromatic oil and alkane technology, applied in the field of aromatic oil preparation, can solve problems such as harsh conditions, poor conversion rate and product yield, and complexity, and achieve high octane number, improved engine power, and good anti-knock performance. Effect

Active Publication Date: 2017-12-01
SHANDONG JINGBO PETROCHEM +1
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Problems solved by technology

However, these existing preparation processes are usually relatively complicated, require harsh conditions, or have poor conversion rates and product yields; and how to simply prepare aromatics, obtain good conversion rates and aromatics yields, especially light aromatics yields, and obtain high Quality aromatic products are getting more and more attention

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preparation example Construction

[0023] The invention provides a kind of preparation method of aromatic hydrocarbon oil, comprises the following steps:

[0024] In a methane-containing atmosphere, the raw oil rich in alkane components is subjected to an aromatization reaction under the action of an aromatization catalyst to obtain aromatic oil;

[0025] In the methane-containing atmosphere, the volume ratio of methane is 1% to 100%;

[0026] The aromatization catalyst is a metal-loaded ZSM-5 molecular sieve catalyst.

[0027] The preparation method of the present invention combines the methane atmosphere with the metal-loaded ZSM-5 molecular sieve catalyst, and the catalytic action of the catalyst and the activation of methane cooperate with each other, which can promote the aromatization reaction of the raw material oil, and effectively improve the conversion rate of the raw material and the yield of aromatics , especially improve the selectivity and yield of these light aromatic hydrocarbons of benzene, to...

Embodiment 1

[0041] Raffinated oil is used as raw material, and Zn-Ga / ZSM-5 molecular sieve is used as catalyst (the ratio of silicon to aluminum is 80, the mass ratio of Zn to ZSM-5 molecular sieve is 5%, and the mass ratio of Ga to ZSM-5 molecular sieve is 1%) , under a 100% methane atmosphere, the aromatization reaction is carried out in a continuous fixed-bed reactor; the mass space velocity of the raw oil is 3h -1 , the catalyst dosage is 1 g, the reaction temperature is 300° C., the reaction pressure is 5.0 MPa, and the reaction time is 60 min. After the reaction, aromatic oil is obtained. The obtained aromatic oil components were tested, and the results showed that the conversion rate of the raw oil was 45.86%, and the liquid product yield was 33.95%; among them, the selectivity of benzene, toluene and xylene was 15.59%, and the benzene, toluene in the aromatic oil The relative content of xylene and xylene is 18.74%, and the relative content of C9 and above aromatic compounds is 4.4...

Embodiment 2

[0043] Raffinated oil is used as raw material, and Zn-Ga / ZSM-5 molecular sieve is used as catalyst (the ratio of silicon to aluminum is 80, the mass ratio of Zn to ZSM-5 molecular sieve is 5%, and the mass ratio of Ga to ZSM-5 molecular sieve is 1%) , under a 100% methane atmosphere, the aromatization reaction is carried out in a continuous fixed-bed reactor; the mass space velocity of the feedstock oil is 1.5h -1 , the amount of catalyst is 2g, the reaction temperature is 380°C, the reaction pressure is 5.0MPa, and the reaction time is 60min. After the reaction, aromatic oil is obtained. The obtained aromatic oil components were detected, and the results showed that the conversion rate of the raw oil was 92.93%, and the liquid product yield was 48.17%; among them, the selectivity of benzene, toluene and xylene was 34.46%, and the benzene, toluene in the aromatic oil The relative content of xylene and xylene is 63.41%, and the relative content of C9 and above aromatic compound...

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Abstract

The application provides a preparation method of aromatic hydrocarbon oil. Under a methane-containing atmosphere, raw oil rich in alkane components is subjected to an aromatization reaction under the action of an aromatization catalyst, so as to obtain the aromatic hydrocarbon oil. In the methane-containing atmosphere, the volume ratio of methane is 1 to 100 percent. The aromatization catalyst is a metal-supported ZSM-5 molecular sieve catalyst. The preparation method is simple and practicable, and facilitates large-scale production; moreover, according to the preparation method, the methane-containing atmosphere and the metal-supported ZSM-5 molecular sieve catalyst are combined, the catalytic action of the catalyst and the activation of the methane are cooperated and matched, the aromatization reaction of the raw oil can be promoted, the raw material conversion rate and the aromatic hydrocarbon yield are effectively improved, and the selectivity and yield of these light aromatic hydrocarbons such as benzene, methylbenzene and xylene therein are particularly improved; in addition, the aromatic hydrocarbon oil prepared according to the preparation method has a high octane number, the aromatic hydrocarbon oil serving as gasoline has good anti-detonating quality, and the engine power is improved and fuel is saved favorably.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a method for preparing aromatic oil. Background technique [0002] With the reduction of petroleum energy, the aromatization of resources rich in alkane components to obtain aromatic oil containing aromatic hydrocarbons is an effective method to improve the utilization value of alkane, and it is also one of the ways to optimize the comprehensive utilization of carbon resources. Among the aromatic hydrocarbons, those with longer carbon chains connected by benzene rings are heavy aromatics, and those with shorter carbon chains connected by benzene rings are light aromatics. Generally speaking, aromatics above C10 are heavy aromatics, and vice versa are light aromatics, such as benzene , toluene, etc. are common light aromatics. In recent years, the transformation of rich light hydrocarbon resources into high value-added aromatics such as benzene, toluene and xylene through a serie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/64B01J29/40B01J29/44
CPCB01J29/40B01J29/405B01J29/44C10G45/64C10G2300/305C10G2300/70Y02P20/52
Inventor 宋华栾波王耀伟张凤岐李庆银赵凯何鹏杰克·贾维斯李艳芳
Owner SHANDONG JINGBO PETROCHEM
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