Method for preparing propylene catalyst from methanol conversion

A technology for methanol conversion and catalyst, which can be used in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., and can solve problems such as low propylene yield

Active Publication Date: 2008-08-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that there are low propylene yields and low P / E (propylene / ethylene weight) ratios in the prior art, and a new method for preparing a catalyst for methanol conversion to propylene is provided

Method used

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  • Method for preparing propylene catalyst from methanol conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The ZSM-5 prepared by Comparative Example 1 was roasted at 500°C for 7 hours, and then exchanged with 1 mol / liter of hydrochloric acid solution. The exchange temperature was 90°C and the time was 5 hours. The sodium solution is subjected to alkali treatment, the treatment time is 16 hours, and the solid-to-liquid ratio is 1 / 10 (g / g). After washing and drying, it is exchanged twice with 1 mol / L hydrochloric acid solution at 90°C for two hours each time. Sample B was obtained by washing, drying and calcining at 550° C. for 5 hours. Under the same reaction conditions as in Example 1, its product distribution is shown in Table 1.

Embodiment 2

[0023]The ZSM-5 prepared by Comparative Example 1 was roasted at 450°C for 5 hours, and then exchanged with a 6 mol / liter hydrochloric acid solution. The exchange temperature was 90°C and the time was 5 hours. The sodium solution is subjected to alkali treatment, the treatment time is 8 hours, and the solid-to-liquid ratio is 1 / 20 (g / g). After washing and drying, it is exchanged twice with 1 mol / L hydrochloric acid solution at 90°C for two hours each time. Sample C was obtained by washing, drying and calcining at 500° C. for 6 hours. Under the same reaction conditions as in Example 1, its product distribution is shown in Table 1.

Embodiment 4

[0025] The ZSM-5 prepared by Comparative Example 1 was roasted at 300°C for 24 hours, and then exchanged with a 2 mol / liter phosphoric acid solution. The exchange temperature was 30°C and the time was 9 hours. The sodium solution is subjected to alkali treatment, the treatment time is 24 hours, and the solid-to-liquid ratio is 1 / 10 (g / g). After washing and drying, it is exchanged twice with 3 mol / L phosphoric acid solution at 90° C. for two hours each time. Sample D was obtained by washing, drying and calcining at 350° C. for 16 hours. Under the same reaction conditions as in Example 1, its product distribution is shown in Table 1.

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Abstract

The present invention provides a preparing method of propylene catalyst by converting methanol, mainly resolves the problem of lower yield of product propylene and lower P / E ratio present in the technology. ZSM-5 powder of the invention partly removes the template agent in air, ZSM-5 molecular sieve precursors I then is acid cleaned by at least one mineral acid from hydrochloric acid, nitric acid, sulphuric acid or phosphoric acid, molecular sieve precursors II is caustic washed by washing the molecular sieve precursors I by aqueous slkali; the catalyst is prepared by converting and baking the molecular sieve precursors I using at least one mineral acid from hydrochloric acid, nitric acid, sulphuric acid or phosphoric acid, the method can resolve the problem, and used for DMTP industry.

Description

technical field [0001] The invention relates to a preparation method of a catalyst for converting methanol into propylene. Background technique [0002] Propylene is an important organic chemical raw material. With the rapid growth of demand for polypropylene and other derivatives, the demand for propylene is also increasing year by year. The traditional propylene production process requires a large supply of crude oil or liquefied petroleum gas, the sharp rise in global oil prices and the depletion of future oil energy, there is an urgent need to develop new energy alternatives and new processes to solve the energy shortage caused by future oil shortages crisis. Catalytic production of light olefins (MTO) from methanol and conversion of methanol to propylene (MTP) are the most promising new technologies to replace the petroleum route. The research, development and industrialization of methanol-to-olefins technology has become a hot spot in the technology development of ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40C07C1/20C07C11/06
CPCY02P20/52
Inventor 温鹏宇梅长松杨为民刘红星陈庆龄雷多方敬东
Owner CHINA PETROLEUM & CHEM CORP
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