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Methanol-to-olefin catalyst and preparation method thereof

A technology of methanol to olefins and catalysts, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as catalyst loss

Active Publication Date: 2018-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method effectively achieves a significant improvement in the wear resistance of the fluidized bed catalyst, and solves the problem of serious catalyst loss during the fluidized bed reaction process

Method used

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  • Methanol-to-olefin catalyst and preparation method thereof
  • Methanol-to-olefin catalyst and preparation method thereof
  • Methanol-to-olefin catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] According to the parts by weight, 30 parts of SAPO-34 molecular sieves, 20 parts of kaolin, 30 parts of aluminum sol and 30 parts of deionized water are fully mixed and stirred at high speed for 1 hour to form a mixed solution I, and 2.5% of its weight is added to the mixed solution I Nano-titanium silicate was stirred and sheared at high speed for 30 minutes to form a suspension. The average particle size of the suspension particles was measured by a laser particle size analyzer to be 4.1 μm. Spray dry the suspension, the atomizer frequency is 25HZ, the air inlet temperature is 340°C, and the air outlet temperature is 200°C, collect the solids at the bottom of the drying tower, use a 60-mesh standard sieve to remove the large particles, and finally put the catalyst in the muffle furnace. The temperature was raised to 600° C. within 8 hours, and then roasted at a constant temperature at 600° C. for 8 hours to obtain a finished microspherical catalyst with an average par...

Embodiment 2～9

[0033] The operation steps and experimental conditions are exactly the same as in Example 1, but the oxides or nanosilicates of the elements in Group IVB of the periodic table are changed, and the obtained catalyst wear index and catalyst evaluation results are shown in Table 1.

[0034] Table 1

[0035]

Embodiment 10～14

[0037] The operation steps and experimental conditions are exactly the same as in Example 1, but the mass fraction of nano-titanium silicate is different. The wear index and catalyst activity evaluation results of the catalyst obtained by spray drying are shown in Table 2.

[0038] Table 2

[0039]

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Abstract

The invention relates to a methanol-to-olefin catalyst. A purpose of the present invention is mainly to solve the problems of poor wear resistance and serious catalyst loss of the current fluidized bed catalyst. The technical scheme comprises that the methanol-to-olefin catalyst is used, and comprises, by weight, (1) 90-100 parts of a molecular sieve, and (2) 0.1-10 parts of the oxide or the nanometer silicate of at least one element selected from the Group IVB of the Periodic Table of the Elements. With the technical scheme, the problems in the prior art are well solved. The methanol-to-olefin catalyst of the present invention can be used in the methanol-to-olefin reaction in the industrial production.

Description

technical field [0001] The invention relates to a methanol-to-olefins catalyst and a preparation method thereof, in particular to a preparation method of a highly wear-resistant fluidized bed catalyst. Background technique [0002] Low-carbon olefins represented by ethylene and propylene are important basic chemical raw materials in the modern chemical industry. With the rapid development of my country's economy, the demand for ethylene and propylene is increasing day by day, and the contradiction between supply and demand is becoming increasingly prominent. At present, ethylene and propylene are mainly obtained through petroleum cracking, steam cracking and conversion of low-carbon alkanes in foreign countries, while my country mainly relies on petroleum catalytic cracking. With the rapid development of the economy, the demand for petroleum continues to grow. Due to the non-renewability of petroleum, the development of a non-petroleum route to produce low-carbon olefins is ...

Claims

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Application Information

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IPC IPC(8): B01J29/85B01J29/00B01J35/08C07C1/20C07C11/04C07C11/06
CPCC07C1/20B01J29/005B01J29/85B01J2229/186B01J35/51C07C11/04C07C11/06Y02P20/52Y02P30/20Y02P30/40
Inventor 吴思操刘红星顾松园殷喜平张少钢
Owner CHINA PETROLEUM & CHEM CORP
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