Low-wear fluidized bed catalyst for preparing aromatics from methanol and preparation method of low-wear fluidized bed catalyst for preparing aromatics from methanol

A fluidized bed catalyst, catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low catalyst wear, low yield of propylene and aromatic hydrocarbons, poor catalyst stability, etc. Selectivity, increased solids content, improved effect of wear resistance

Active Publication Date: 2015-03-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] One of the technical problems to be solved by the present invention is the problem of poor catalyst stability and low yield of propylene and aromatic hydrocarbons in the existing reaction of methanol conversion to propylene and aromatics. A new catalyst for methanol conversion to propylene and aromatics is provided. In the reaction of methanol conversion to propylene and aromatics, it has the advantages of high catalyst stability, high yield of propylene and aromatics, and low catalyst wear

Method used

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  • Low-wear fluidized bed catalyst for preparing aromatics from methanol and preparation method of low-wear fluidized bed catalyst for preparing aromatics from methanol
  • Low-wear fluidized bed catalyst for preparing aromatics from methanol and preparation method of low-wear fluidized bed catalyst for preparing aromatics from methanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Weigh 160g of water, 12g of concentrated phosphoric acid, mix well, add 180g of aluminum sol, 120g of kaolin and 100g of ZSM-5 molecular sieve, and use a colloid mill to mix vigorously for 20 minutes to obtain the required slurry for spray drying.

[0038] 2) Spray-dry the obtained slurry to make microspheres of 20-200 μm, and bake them at 600°C for 4 hours to form them.

[0039] 3) Take 150g of formed microspheres, use zinc nitrate solution as the impregnating solution, and use the impregnation method to load zinc element, and finally dry at 120°C for 10h, and burn at 600°C for 4h to obtain methanol-to-aromatics fluidized bed catalyst A. The zinc in the obtained catalyst The element content is 3.0%.

Embodiment 2

[0041] The difference from Example 1 is that during the slurry preparation process, the amount of concentrated phosphoric acid added is 3.0 g, and the rest of the steps are the same as in Example 1 to obtain catalyst B.

[0042]

Embodiment 3

[0044] 1) Weigh 210g of water, 5g of ammonium phosphate, and 2g of phosphoric acid to dissolve evenly, add 160g of aluminum sol, 100g of kaolin, and 110g of ZSM-5 molecular sieve, and use a colloid mill to mix vigorously for 30 minutes to obtain the slurry required for spray drying.

[0045] 2) Spray-dry the obtained slurry to make microspheres of 20-200 μm, and bake them at 650°C for 2 hours to form them.

[0046] 3) Take 150g of molded microspheres and load 1.5% of the metal element gallium by impregnation method. Dry at 100°C for 16 hours, and burn at 580°C for 8 hours to obtain methanol-to-aromatics fluidized-bed catalyst C.

[0047]

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Abstract

The invention relates to a low-wear fluidized bed catalyst for preparing aromatics from methanol, and a preparation method for the low-wear fluidized bed catalyst for preparing the aromatics from the methanol, and mainly solves the technical problem that an existing catalyst is large in wear. According to the technical scheme adopted, the fluidized bed catalyst comprises the following components in percentage by weight: (1) 20.0-55.0% of kaolin, (2) 10.0-25.0% of a binder, (3) 0.2-15.0% of phosphorus oxide; (4) 0.1-10.0% of metal element oxide, and (5) 25.0-60.0% of a ZSM-5 molecular sieve, wherein the phosphorus oxide is added during preparation of slurry for spray-drying a catalyst, and the problem is well solved, and the low-wear fluidized bed catalyst and the preparation method thereof can be used for industrial production of preparing the aromatics from the methanol.

Description

technical field [0001] The invention relates to a fluidized-bed catalyst for converting methanol into aromatics and its preparation method and application, in particular to a novel ZSM-5 molecular sieve catalyst, its preparation method and application. Background technique [0002] Methanol is an important organic chemical raw material with wide application and rich sources. In addition to obtaining it from biomass, coal or natural gas is also an important raw material for methanol production. Many sets of methanol production devices using natural gas and coal as raw materials have been built and put into operation in my country , Methanol production is increasing year by year. Regarding the planning and construction of my country's methanol projects, despite the differences in various statistical data, the unanimous conclusion is that the production capacity of methanol will far exceed the actual demand in a relatively short period of time in the future. Carrying out resear...

Claims

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Application Information

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IPC IPC(8): B01J29/40B01J29/46C07C1/20C07C15/02C07C15/04C07C15/06C07C15/08
CPCY02P20/52
Inventor 陈希强肖景娴许烽
Owner CHINA PETROLEUM & CHEM CORP
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