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Method for preparing aromatics from raw material of methanol

A technology for methanol and raw materials, applied in the field of preparing aromatic hydrocarbons from methanol raw materials, can solve the problems of low aromatics selectivity and the like

Active Publication Date: 2018-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] One of the technical problems to be solved by the present invention is the technical problem of low selectivity of aromatics in the prior art, and a method for preparing aromatics from methanol raw material is provided

Method used

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  • Method for preparing aromatics from raw material of methanol

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The methanol raw material enters the fluidized bed reactor and contacts with the Zn-La-P-ZSM-5 catalyst for reaction. The mass percent content of methanol in the methanol raw material is 10%. The temperature of each point in the fluidized bed reactor is 480°C, the reaction gauge pressure is 0 MPa, and the methanol weight space velocity is 0.2 hours -1 , the residence time of methanol in the catalyst bed is 32 seconds, the catalyst bed density is 470 kg / m3, and the residence time-catalyst bed density compensation factor is 15×10 3 Second Kilogram / Cubic Meter.

[0029] In the Zn-La-P-ZSM-5 catalyst, based on the mass percentage of the catalyst, the Zn element content is 7%, the La element content is 5%, and the P element content is 3%. The reaction results are shown in Table 1.

Embodiment 2

[0031] According to the method and step of embodiment 1, adopt the catalyst of embodiment 1. The mass percent content of methanol in the methanol raw material is 30%. The temperature of each point in the fluidized bed reactor is 450°C, the reaction gauge pressure is 0.2 MPa, and the methanol weight space velocity is 4 hours -1 . Other reaction conditions and reaction results are shown in Table 1.

Embodiment 3

[0033] According to the method and step of embodiment 1, adopt the catalyst of embodiment 1. The mass percent content of methanol in the methanol raw material is 100%. The temperature of each point in the fluidized bed reactor is 520°C, the reaction gauge pressure is 0.1 MPa, and the methanol weight space velocity is 2.5 hours -1 . Other reaction conditions and reaction results are shown in Table 1.

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Abstract

The invention relates to a method for preparing aromatics from a raw material of methanol, and mainly solves the problem of low selectivity to a carbon base of the aromatics in the prior art. According to the method for preparing the aromatics from the raw material of methanol, a technical scheme is adopted, wherein the residence time-the density compensation factor of a catalyst bed layer is maintained at 1x10<3>-15x10<3> s.kg / m<3>; through the adoption of the technical scheme, the problem is solved well, and the method can be applied to industrial production of the aromatics.

Description

technical field [0001] The invention relates to a method for preparing aromatic hydrocarbons from methanol raw materials. Background technique [0002] Aromatic hydrocarbons (especially triphenyl, benzene Benzene, toluene, xylene Xylene, namely BTX) are important basic raw materials for organic synthesis. Driven by the demand for downstream derivatives, the market demand for aromatics continues to grow. [0003] The steam cracking process using liquid hydrocarbons (such as naphtha, diesel oil, secondary processed oil) as raw material is the main production process of aromatics. This process belongs to the production technology of petroleum route. In recent years, due to the limited supply and high price of petroleum resources, the cost of raw materials has been increasing. Due to these factors, the technology of producing aromatics from alternative raw materials has attracted more and more attention. Among them, coal-based methanol and dimethyl ether raw materials are gra...

Claims

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Application Information

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IPC IPC(8): C07C1/20C07C15/04C07C15/06C07C15/08
Inventor 李晓红钟思青齐国祯金永明
Owner CHINA PETROLEUM & CHEM CORP