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Method for preparing aromatic hydrocarbon through methanol transformation

A technology for methanol conversion and aromatics, applied in chemical instruments and methods, condensation between hydrocarbons and non-hydrocarbons, organic chemistry, etc., can solve the problems of complex process routes and low selectivity of target product aromatics

Inactive Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the complex process route and the low selectivity of the target product aromatics (especially BTX) existing in the prior art, providing a new method for methanol conversion to aromatics

Method used

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  • Method for preparing aromatic hydrocarbon through methanol transformation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The preparation of this embodiment includes: based on the total weight of the catalyst, 2% P 2 o 5 , 3% La 2 o 3 , 30% HZSM-5, 10% HZSM-11, 25% Hβ, 30% Al 2 o 3 Catalyst A.

[0015] Weigh 30 grams of HZSM-5 molecular sieve, 10 grams of HZSM-11 molecular sieve, 25 grams of Hβ molecular sieve, 30 grams of Al 2 o 3 , 3.8 grams of scallop powder, mixed evenly, adding 42 grams of nitric acid aqueous solution with a mass concentration of 5%, fully kneaded and extruded into a cylindrical shape with a diameter of 1.5 mm, dried and roasted at 520 ° C for 6 hours to make 2 ~ 3 mm long catalyst support.

[0016] 20 g of the above catalyst carrier was impregnated in 14 ml containing 0.63 g La 2 o 3 In the aqueous solution of lanthanum nitrate, the catalyst intermediate was prepared after standing at room temperature for 24 hours, drying, and calcining at 480°C for 4 hours.

[0017] The above catalyst intermediate was impregnated in 14 ml containing 0.42 g P 2 o 5 In the...

Embodiment 2

[0020] The preparation of this embodiment includes: based on the total weight of the catalyst, 2% P 2 o 5 , 3% La 2 o 3 , 30% HZSM-5, 18% HZSM-11, 17% Hβ, 30% Al 2 o 3 Catalyst B.

[0021] The preparation method is the same as in Example 1, except that 18 grams of HZSM-11 molecular sieve and 17 grams of Hβ molecular sieve are weighed.

[0022] Catalyst evaluation conditions are the same as in Example 1, and the reaction results are listed in Table 2.

Embodiment 3

[0024] The preparation of this embodiment includes: based on the total weight of the catalyst, 2% P 2 o 5 , 3% La 2 o 3 , 30% HZSM-5, 25% HZSM-11, 10% Hβ, 30% Al 2 o 3 Catalyst C.

[0025] The preparation method was the same as in Example 1, except that 25 grams of HZSM-11 molecular sieve and 10 grams of Hβ molecular sieve were weighed.

[0026] Catalyst evaluation conditions are the same as in Example 1, and the reaction results are listed in Table 2.

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Abstract

The invention relates to a method for preparing aromatic hydrocarbon through methanol transformation, and mainly solves the problems of complicated process flow and low selectivity of target products existing in the prior art. The problems are better solved by adopting the technical scheme that the method comprises the step of: reacting by taking methanol as a raw material and a mixture of HZSM-5 containing rare earth metal or oxide thereof and at least one of a HZSM-11 or Hbeta molecular sieve as an active main body of a catalyst under the condition that the reaction temperature is 320 to 480 DEG C, the reaction pressure is 0.1 to 3.0MPa and the weight hourly space velocity of the raw material is 0.5 to 6.0 h<-1>; and the method can be used for the industrial production of the aromatic hydrocarbon through methanol transformation.

Description

technical field [0001] The invention relates to a method for producing aromatics by converting methanol. Background technique [0002] Due to the shortage of oil and natural gas resources in my country, coal resources are relatively abundant. In recent years, my country's coal chemical industry has experienced a hot situation, and various coal chemical projects have been launched in various places. As a relatively mature coal chemical technology, coal-based methanol synthesis has become the preferred project of most coal chemical enterprises. In recent years, my country's production of methanol using coal as raw material is developing towards large-scale and energy-saving development, and the output continues to increase. The production capacity of methanol will far exceed the actual demand. It is of great significance to the development of the methanol industry to have the production technology level of the downstream products of methanol. [0003] The content of methanol...

Claims

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Application Information

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IPC IPC(8): C07C2/88C07C15/00B01J29/80
Inventor 林秀英滕加伟李斌朱慧芬
Owner CHINA PETROLEUM & CHEM CORP
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