Method for producing propylene by oxygen-containing compound conversion

A compound and propylene technology, applied in the direction of hydrocarbon production from oxygen-containing organic compounds, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of low catalyst activity and achieve high activity, high sphericity, and difficult to agglomerate.

Active Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • 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 low activity of the molecular sieve fluidized bed catalyst used in the existing oxygenate conversion to propylene technology, and a new method for oxygenate conversion to propylene is provided. The catalyst used in the method is Has the advantage of high catalytic activity

Method used

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  • Method for producing propylene by oxygen-containing compound conversion
  • Method for producing propylene by oxygen-containing compound conversion
  • Method for producing propylene by oxygen-containing compound conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take by weighing 500 grams of kaolin and 2 grams of fennel powder, after mixing evenly, add 2000 grams of distilled water, shear at a high speed for 30 minutes with a high-speed shearing machine, then add 500 grams of silica sol containing 40% by weight of silicon oxide, and continue high-speed shearing for 30 minutes Minutes, then add 1 gram of triammonium citrate, 2 grams of sodium carbonate, after continuing high-speed shearing for 30 minutes, measure the particle size of this suspension with a laser particle size analyzer, and its average particle diameter is 2 microns. Spray molding with a spray dryer, the spray molding conditions are: inlet temperature 240°C, outlet temperature 120°C, centrifugal speed 10000 rpm, cyclone pressure difference at the outlet is 0.7KPa, feed rate is 1 kg / hour, and the formed micro Ball Catalyst Precursor I. The catalyst precursor I was calcined by temperature programming at 400° C. for 3 hours, and then at 650° C. for 3 hours to obtain...

Embodiment 2～10

[0026] According to the method of Example 1, using the ingredients and preparation conditions in Table 1 and Table 3, wherein the silica sol contains 40% by weight of silicon dioxide, the performance of the prepared fluidized bed catalyst is shown in Table 2.

[0027]

[0028]

[0029] table 3

[0030]

Embodiment 11

[0032] Get 200 grams of the method of embodiment 1 to make the fluidized bed ZSM-5 catalyst, put into the fluidized bed reactor that internal diameter is 50 millimeters, take methanol as raw material, at 480 ℃, weight space velocity 1h -1 , Water / methanol weight ratio 1: 1, pressure under the condition of 0.02MPa evaluation, the weight yield of ethylene reaches 25%, the weight yield of propylene reaches 50%, the product distribution is shown in Table 4, and the total yield of diene weight is 75%. .

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Abstract

The invention relates to a method for producing propylene by oxygen-containing compound conversion and mainly solves the problem of poor wear resistance of a fluidized bed catalyst during present technologies for producing propylene by oxygen-containing compound conversion. According to the invention, methanol or dimethyl ether is used as a raw material, and the raw material contacts with a binder-free ZSM-5 molecular sieve fluidized bed catalyst through a catalyst bed so as to generate light olefin while the reaction temperature is 400-600 DEG C, the reaction surface pressure is 0.001MPa-0.5MPa, the reaction weight space velocity is 0.1-4 h<-1>, and the weight ratio of water/methanol or dimethyl ether is 0.1-3: 1. The method for producing propylene by oxygen-containing compound conversion is adopted to greatly solve the problem and can be used in the industrial production of propylene by oxygen-containing compound conversion.

Description

technical field [0001] The invention relates to a method for producing propylene by converting oxygen-containing compounds. Background technique [0002] As the leader of the petrochemical industry, the low-carbon olefin industry plays a pivotal role in the development of the national economy. With the development of society, the market demand for low-carbon olefins in my country has increased sharply, and the import volume of low-carbon olefins and their downstream products has increased year by year, and the market share of domestic products is less than half. [0003] Methanol to propylene refers to the process technology of using methanol to generate low carbon olefins such as ethylene and propylene under the action of a catalyst. Methanol to propylene technology is a new process route for producing chemical products from non-petroleum resources, and has become one of the hot spots in the research and development of new energy resource technologies. [0004] Molecular ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/06C07C1/20B01J29/40
CPCY02P20/52Y02P30/20Y02P30/40
Inventor 马广伟徐建军
Owner CHINA PETROLEUM & CHEM CORP
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