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Method for producing aromatic hydrocarbons by methanol conversion

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

[0005] The technical problem to be solved by the present invention is the problem of complex process route and low selectivity of target product aromatics (especially BTX) existing in the prior art, providing a new method for the conversion of methanol to aromatics

Method used

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  • Method for producing aromatic hydrocarbons by methanol conversion

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The preparation of this embodiment includes: based on the total weight of the catalyst, 3% La 2 o 3 , 5% Ga 2 o 3 , 55% HZSM-5, 17% HMCM-22, 20% Al 2 o 3 Catalyst A.

[0014] Weigh 55 grams of HZSM-5 molecular sieve, 17 grams of HMCM-22 molecular sieve, 20 grams of Al 2 o 3 , 3.6 grams of scallop powder, mix it uniformly, add 40 grams of mass concentration of 5% nitric acid aqueous solution, fully knead and extrude into a cylindrical shape with a diameter of 1.5 mm, dry and roast at 600 ° C for 4 hours to make 2 ~ 3 mm long catalyst support.

[0015] 20 g of the above catalyst carrier was impregnated in 14 ml containing 1.09 g of Ga 2 o 3 In the gallium nitrate aqueous solution, the catalyst intermediate was prepared after standing at room temperature for 24 hours, drying, and calcining at 450°C for 6 hours.

[0016] The above catalyst intermediate was impregnated in 14 ml containing 0.65 g La 2 o 3 In the lanthanum nitrate aqueous solution, the catalyst A w...

Embodiment 2

[0019] The preparation of this embodiment includes: based on the total weight of the catalyst, 2% P 2 o 5 , 3% Ga 2 o 3 , 40% HZSM-5, 25% HMCM-22, 30% Al 2 o 3 Catalyst B.

[0020] Weigh 40 grams of HZSM-5 molecular sieve, 25 grams of HMCM-22 molecular sieve, 30 grams of Al 2 o 3 , 3.8 grams of scallop powder, mixed evenly, adding 40 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.

[0021] 20 g of the above catalyst carrier was impregnated in 14 ml containing 0.63 g of Ga 2 o 3 In the gallium nitrate aqueous solution, the catalyst intermediate was prepared after standing at room temperature for 24 hours, drying, and calcining at 480°C for 4 hours.

[0022] The above catalyst intermediate was impregnated in 14 ml containing 0.42 g P 2 o 5 In the ammonium dihydrogen phosphate aqueous sol...

Embodiment 3

[0025] The preparation of this embodiment includes: based on the total weight of the catalyst, 5% La 2 o 3 , 8% Ga 2 o 3 , 20% HZSM-5, 40% HMCM-22, 27% Al 2 o 3 Catalyst C.

[0026] Weigh 20 grams of HZSM-5 molecular sieve, 40 grams of HMCM-22 molecular sieve, 27 grams of Al 2 o 3 , 3.5 grams of scallop powder, mixed evenly, adding 40 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.

[0027] 20 g of the above catalyst carrier was impregnated in 14 ml containing 1.84 g of Ga 2 o 3 In the gallium nitrate aqueous solution, the catalyst intermediate was prepared after standing at room temperature for 24 hours, drying, and calcination at 500°C for 4 hours.

[0028] The above catalyst intermediate was impregnated in 14 ml containing 1.15 g La 2 o 3 In the lanthanum nitrate aqueous solution, t...

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Abstract

The invention relates to a method for producing aromatic hydrocarbons by methanol conversion and mainly solves the problems of complex technological process and low selectivity of target products in the prior art. According to the invention, methanol is used as a raw material to react with a catalyst active component which is an HZSM-5 and HMCM-22 molecular sieve mixture containing rare earth metal or its oxide while the reaction temperature is 320-480 DEGC, the reaction pressure is 0.1-3.0MPa and weight hourly space velocity of the raw material is 0.5-6.0 h<-1>. The technical scheme greatly solves the problems and can be used in the industrial production of aromatic hydrocarbons by methanol conversion.

Description

technical field [0001] The invention relates to a method for converting methanol to aromatics. Background technique [0002] Aromatics (especially Benzene, Toluene and Xylene, collectively referred to as BTX) are important basic petrochemical raw materials. Aromatics in my country mainly come from petroleum resources, and the shortage of petroleum resources in my country determines that aromatics Due to the scarcity of resources, it is very important to find a new technology that can replace petrochemical production of aromatics. [0003] Due to the shortage of oil and natural gas resources in my country and the relative abundance of coal resources, 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, so methanol production is actively carried out. The development of downstream ...

Claims

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Application Information

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IPC IPC(8): C07C1/20C07C15/00C07C15/04C07C15/06C07C15/08B01J29/80B01J29/40B01J29/70
CPCY02P20/52
Inventor 林秀英滕加伟李斌朱慧芬
Owner CHINA PETROLEUM & CHEM CORP
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