Method for producing aromatic hydrocarbon by adopting raw materials containing methanol

A technology of methanol and raw materials, applied in the field of preparing aromatics

Inactive Publication Date: 2011-09-28
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is currently no report on an industrial plant suitable for fixed-bed methanol and / or Fischer-Tropsch synthetic naphtha components to produce aromatics, and there is no good method for processing and utilizing Fischer-Tropsch synthetic naphtha components.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] According to the present invention, the preparation method of the silica-alumina zeolite molecular sieve through metal-modified MFI structure and / or MEL structure comprises the following steps:

[0017] (1) The zeolite molecular sieve raw powder is subjected to NH 4+ Ion exchange and roasting to prepare acidic zeolite molecular sieves;

[0018] (2) Use soluble non-rare earth metal salt solution and / or soluble rare earth metal salt solution to impregnate acidic zeolite molecular sieve, as long as the impregnation time and the concentration of metal salt in soluble non-rare earth metal salt solution and / or soluble rare earth metal salt solution meet The content of the metal component in the catalyst is sufficient; after drying and roasting, a non-rare earth metal and / or rare earth metal modified zeolite molecular sieve is obtained;

[0019] (3) The modified catalyst prepared in the step (2) is pressed into tablets, dried and shaped.

[0020] Wherein, in step (1), the ra...

Embodiment 1

[0024] This example is used to illustrate the preparation of fixed bed catalyst

[0025] (1) 500 grams of ZSM-5 zeolite molecular sieve former powder (Nankai University Catalyst Factory) SiO 2 / Al 2 o 3 =50 (molar ratio) roasting at 550°C to remove template agent, exchange 4 times with 0.5 molar equivalent ammonium nitrate solution in 80°C water bath, dry at 120°C air after exchange, and roast at 550°C for 3 hours to obtain HZSM-5 zeolite molecular sieve.

[0026] (2) 20 grams of HZSM-5 zeolite molecular sieves prepared in step (1) were pressed into tablets, and the 40-60 mesh samples were obtained after crushing and screening, which were divided into two parts. 3% by weight and 9% by weight of zinc nitrate Zn (NO3 ) 2 The solution was soaked for 4 hours, dried at 120°C, and roasted in air at 550°C for 6 hours to obtain a non-rare earth metal modified catalyst;

[0027] (3) With a concentration of 10% by weight La(NO 3 ) 3 The aqueous solution impregnation step (2) obta...

Embodiment 2

[0029] This example is used to illustrate the preparation of fixed bed catalyst

[0030] (1) 500 grams of ZSM-5 zeolite molecular sieve former powder (Nankai University Catalyst Factory) (SiO 2 / Al 2 o 3 =50) Roast at 550°C to remove template agent, exchange 4 times with 0.5 molar equivalent ammonium nitrate solution in 80°C water bath, dry in air at 120°C after exchange, and roast at 550°C for 3 hours to obtain HZSM-5 Zeolite molecular sieve.

[0031] (2) 20 grams of HZSM-5 zeolite molecular sieves prepared in step (1) were pressed into tablets, and the 40-60 mesh samples were obtained after crushing and screening, which were divided into two parts. 3.7% by weight and 11.1% by weight of molybdenum nitrate Mo (NO 3 ) 3 The solution was soaked at room temperature for 4 hours, dried at 120°C, and then calcined in air at 550°C for 6 hours to obtain a non-rare earth metal modified catalyst;

[0032] (3) With a concentration of 10% by weight La(NO 3 ) 3 The aqueous solution...

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PUM

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Abstract

The invention discloses a method for producing aromatic hydrocarbon by adopting raw materials containing methanol. The raw material containing methanol comprises the methanol and Fischer-Tropsch synthesis naphtha. In the method, the raw materials containing methanol and a catalyst undergo a contact reaction under the condition of producing the aromatic hydrocarbon by using the methanol. By adopting the method disclosed by the invention, the problem that great removed heat is needed to be adopted in the prior art is solved; and the method has the advantages of simple flow and simpleness and convenience for operation. By adopting the method provided by the invention and a good method for processing and utilizing Fischer-Tropsch synthesis naphtha components, aromatic hydrocarbon products are produced or the octane value of the Fischer-Tropsch synthesis naphtha components is increased to gasoline mediated components with a high octane value.

Description

technical field [0001] The invention relates to a method for preparing aromatic hydrocarbons from raw materials containing methanol. Background technique [0002] Aromatics are important petrochemical products with high added value. Aromatics in my country mainly come from petroleum resources, and the shortage of petroleum resources in my country determines the shortage of aromatics resources. The direct conversion of resource-rich methanol to produce aromatics is of great value in alleviating the shortage of aromatics, increasing the added value of methanol downstream products, and prolonging the industrial chains of coal chemical and natural gas chemical industries. Using methanol to prepare aromatics is a new way to produce aromatics by non-petroleum route. [0003] In 1976, Mobil Oil Company carried out the conversion reaction of methanol to hydrocarbons on ZSM-5 molecular sieve catalyst. US4035430 discloses a process in which methanol is converted to gasoline on a ZS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G35/095C10G3/00C07C1/20C07C15/00
CPCY02P30/20
Inventor 欧书能马跃龙王建伟熊亮于广欣谭海涛金阳肖钢郑长波许磊
Owner CHINA NAT OFFSHORE OIL CORP
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