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Process for the production of aromatics from methanol conversion

A technology for methanol conversion and aromatic hydrocarbons, which can be applied in the production of bulk chemicals, chemical instruments and methods, and hydrocarbon production from oxygen-containing organic compounds, etc., and can solve the problems of low yield of aromatics and low yield of BTX.

Active Publication Date: 2015-08-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is the problem of low aromatics yield and low BTX yield in the process of producing aromatics by methanol conversion in the prior art, and a new method for producing aromatics by methanol conversion is provided

Method used

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  • Process for the production of aromatics from methanol conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Take by weighing 2.8g polyethylene glycol, 4.0g P123, 16g concentration be the nitric acid solution of 1mol / L, 3.9g aluminum nitrate, 27.9g tetraethyl orthosilicate and 28g water mix, dissolve under stirring condition, And continue to hydrolyze for 2h. Then it was transferred to an airtight container, gelled and aged for 24 hours at 65°C, and then the gel was taken out and dried to obtain sample A1.

[0025] 2) Weigh 7.0g sample A1, 0.3g HZSM-5 (SiO 2 / Al 2 o 3 Ratio=25) molecular sieve, 7.2g silica sol (SiO 2 Mass concentration 40%), 0.17g pseudo-boehmite, 0.3g scallop powder and 3.9g dilute hydrochloric acid solution (concentration is 1mol / L), after kneading evenly, adopt the mode of extrusion to make cylindrical particles, and obtain Sample B1.

[0026] 3) Take 1.5g of sample B1 and place it in the upper layer of the crystallization reaction kettle, place 4.0g of water and 1.0g of TPAOH in the lower layer, and crystallize at 160°C for 2 days under autogenous ...

Embodiment 2～6

[0031] Weigh the sample C1 prepared in [Example 1], adjust the amount of zinc nitrate, and prepare catalysts with Zn oxide content of 1.2 parts, 2.4 parts, 3.6 parts, 14.5 parts and 20 parts respectively, which are denoted as MTA-2, MTA-3, MTA-4, MTA-5, MTA-6.

[0032] Catalyst evaluation adopts the method of [Example 1], and the results are listed in Table 1.

Embodiment 7

[0034] 1) Take by weighing 15.6g polyethylene oxide, 12g P123, 117g concentration be the hydrochloric acid solution of 1mol / L, 5.2g aluminum sulfate, 52.9g methyl orthosilicate and 110g water mix, dissolve under stirring condition, and sonicated for 10 minutes. Then it was transferred to an airtight container, and the gel was aged at 60°C for 36 hours, and then the gel was taken out and dried to obtain sample A2.

[0035] 2) Weigh 20g sample A2, 2g HZSM-5 (SiO 2 / Al 2 o 3 ratio=50) molecular sieve, 6g fumed silica, 1g pseudoboehmite, 5.5g silica sol (SiO 2 mass content 40%), 16g of dilute nitric acid solution with a concentration of 1.5%, kneaded uniformly, then formed by extruding, and dried to obtain sample B2.

[0036] 3) Take 5.0g of sample B4, absorb 1.0g of TPAOH and place it on the upper layer of the crystallization reaction kettle, place 10g of water on the lower layer, and crystallize at 170°C for 48 hours under autogenous pressure conditions. After the product is...

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Abstract

The invention relates to a method for producing arene through conversion of methyl alcohol, which mainly solves the problems that the yield of arene is low and the yield of BTX (benzene, toluene and xylol) is low in an existing method for producing arene through conversion of methyl alcohol. According to the method disclosed by the invention, the methyl alcohol is taken as a raw material, under reaction conditions that the reaction temperature is 370-480 DEG C, the gage pressure is 0-0.5MPa, and the reaction weight air speed is 0.5-4.0 hour<-1>, the methyl alcohol and the catalyst contact and react so as to produce arene, wherein the catalyst is a ZSM-5 zeolite catalyst without adhesive and comprises the following components in parts by weight: (a) 70-95 parts of ZSM-5zeolite without adhesive, (b)1-30 parts of at least one oxide selected from Ag, Zn or Ga, and (c) 0-5 parts of at least one oxide selected from Mo, Cu, La, P, Ce or Co. The method for producing arene through conversion of methyl alcohol well solves the problems and can be used in industrial production.

Description

technical field [0001] The invention relates to a method for converting methanol to produce aromatic hydrocarbons. Background technique [0002] Aromatics, especially light aromatics BTX (benzene, toluene, xylene) is an important basic organic chemical material, its output and scale are second only to ethylene and propylene, and its derivatives are widely used in chemical products such as chemical fibers, plastics and rubber and the production of fine chemicals. In recent years, with the continuous development of petrochemical and textile industries, the demand for aromatics has been increasing. The current main sources of BTX are catalytic reforming and pyrolysis gasoline by-products, both of which use petroleum as the initial raw material for production. According to statistics, aromatics produced by petroleum routes in my country accounted for more than 85% of the total output of aromatics, and aromatics produced by petroleum as raw materials in foreign countries accoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C1/20C07C15/00C07C15/04C07C15/06C07C15/08B01J29/40B01J29/48B01J29/46
CPCY02P20/52
Inventor 陈希强汪哲明肖景娴
Owner CHINA PETROLEUM & CHEM CORP
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