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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, hydrocarbon production from oxygen-containing organic compounds, organic chemistry, etc., can solve the problems of complex process routes and low selectivity of target product aromatics

Active 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, and a new method for preparing aromatics by methanol conversion is provided

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 example includes: based on the total weight of the catalyst, 2% NiO, 3% ZnO, 45% HZSM-5, 15% HZSM-11, 15% HMCM-22, 20% Al 2 o 3 Catalyst A.

[0015] Weigh 45 grams of HZSM-5 molecular sieve, 15 grams of HZSM-11 molecular sieve, 15 grams of HMCM-22 molecular sieve, 20 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 600 ° C for 4 hours to make 2 ~ 3 mm long catalyst support.

[0016] 20 grams of the above-mentioned catalyst carrier was immersed in 14 milliliters of zinc nitrate aqueous solution containing 0.63 grams of ZnO, left standing at room temperature for 24 hours, dried, and calcined at 450° C. for 6 hours to prepare a catalyst intermediate.

[0017] The catalyst intermediate was immersed in 14 ml of nickel nitrate aqueous solution containing 0....

Embodiment 2

[0020] The preparation of this embodiment includes: based on the total weight of the catalyst, 5% P 2 o 5 , 8% ZnO, 30% HZSM-5, 30% HZSM-11, 7% HMCM-22, 20% Al 2 o 3 Catalyst B.

[0021] Weigh 30 grams of HZSM-5 molecular sieve, 30 grams of HZSM-11 molecular sieve, 7 grams of HMCM-22 molecular sieve, 20 grams of Al 2 o 3 , 3.5 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 4 hours to make 2 ~ 3 mm long catalyst support.

[0022] 20 grams of the above-mentioned catalyst carrier was immersed in 14 milliliters of zinc nitrate aqueous solution containing 1.84 grams of ZnO, left to stand at room temperature for 24 hours, dried, and calcined at 480 ° C for 4 hours to prepare a catalyst intermediate.

[0023] The above catalyst intermediate was impregnated in 14 ml containing 1.15 g P 2 o 5 In ...

Embodiment 3

[0026] The preparation of this example includes: based on the total weight of the catalyst, 3% NiO, 5% ZnO, 20% HZSM-5, 12% HZSM-11, 20% HMCM-22, 40% Al 2 o 3 Catalyst C.

[0027] Weigh 20 grams of HZSM-5 molecular sieve, 12 grams of HZSM-11 molecular sieve, 20 grams of HMCM-22 molecular sieve, 40 grams of Al 2 o 3 , 3.7 grams of scallop powder, mixed evenly, adding 43 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 550 ° C for 4 hours to make 2 ~ 3 mm long catalyst support.

[0028] 20 grams of the above-mentioned catalyst carrier was immersed in 15 milliliters of zinc nitrate aqueous solution containing 1.09 grams of ZnO, left to stand at room temperature for 24 hours, dried, and calcined at 500 ° C for 4 hours to prepare a catalyst intermediate.

[0029]The catalyst intermediate was immersed in 15 ml of nickel nitrate aqueous solution containing 0.6...

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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 a metal element or oxide thereof and at least one of a HZSM-11 or HMCM-22 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 preparing aromatic hydrocarbons 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C15/00C07C15/04C07C15/06C07C15/08B01J29/80
CPCY02P20/52
Inventor 林秀英滕加伟李斌朱慧芬
Owner CHINA PETROLEUM & CHEM CORP
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