Catalyst of fluid bed in use for preparing ethane, propylene through catalytic cracking

A fluidized bed catalyst, ethylene propylene technology, used in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrocarbon cracking to produce hydrocarbons, etc., can solve the problem of poor selectivity, high reaction temperature, The problem of low catalyst activity is to achieve good technical effect and strong low temperature activity effect.

Active Publication Date: 2007-02-21

CHINA PETROLEUM & CHEM CORP +1

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AI-Extracted Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the problems of high reaction temperature, low activity and poor selectivity o...

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Abstract

A catalyst for preparing ethene and propene by catalytic cracking of petroleum naphtha on fluidized bed is composed of the carrier chosen from SiO2, Al2O3 and their mixture and the active component Mo1.0BiaVbAcBdOx. It has high low-temp activity, selectivity and low reaction temp.

Application Domain

HydrocarbonsMetal/metal-oxides/metal-hydroxide catalysts +2

Technology Topic

ChemistryFluid catalytic cracking +6

Examples

Experimental program(8)

Example Embodiment

[0027] [Example 1]

[0028] Take 5.89 g of bismuth nitrate and dissolve it with 10 ml of 1:1 concentrated nitric acid to obtain a yellow solution. Another 30 g of ammonium molybdate was dissolved in 200 ml of water, poured into the bismuth nitrate solution, and stirred to prepare solution (I).

[0029] Take another 3 g of ammonium metavanadate, add 100 ml of water, drop 2 ml of 80% phosphoric acid, add 3 g of oxalic acid, and heat until the ammonium metavanadate is dissolved to obtain solution (II).

[0030] Then take 7.86 g of cobalt nitrate, 5.58 g of cerium nitrate, and 6.72 g of calcium nitrate, and dissolve the three together in 250 ml of water to obtain solution (III).

[0031] Mix the solutions (I), (II), and (III), place them in a 70-80°C water bath and heat, add 25 grams of weighed silica and 1 gram of alumina. Reflux for 5 hours, and then use a spray dryer to dry and shape. After the obtained powder was sieved, it was placed in a muffle furnace and heated to 740°C and burned for 5 hours. After cooling, the catalyst was sieved.

[0032] The chemical formula of the obtained catalyst is: Mo 1.0 Bi 0.07 V 0.15 Co 0.16 Ca 0.17 Ce 0.08 O x +30.6% carrier

[0033] The catalyst activity evaluation was performed under the following conditions: a fluidized bed reactor with an inner diameter of 39 mm, a reaction temperature of 650° C., and a pressure of 0.15 MPa. The weight ratio of water/naphtha is 3:1, the catalyst loading is 20g, and the loading is 1g naphtha/g catalyst·hour. The gas products were collected and analyzed by gas chromatography. The product distribution is shown in Table 2.

[0034] Products

Example Embodiment

[0035] [Example 2]

[0036] As in Example 1, solution (I) and solution (II) were prepared. Take 10.91 g of iron nitrate, 3.73 g of nickel nitrate, 5.85 g of lanthanum nitrate, and 1.1 g of potassium nitrate, and dissolve them in 250 ml of water to obtain solution (III).

[0037] Mix the solutions (I), (II), and (III). Add 25 grams of silica and 1 gram of alumina.

[0038] The chemical formula of the catalyst is: Mo 1.0 Bi 0.07 V 0.15 Fe 0.16 Ni 0.08 K 0.06 La 0.08 O x +30.06% carrier

[0039] Others are the same as in Example 1, and the product distribution is shown in Table 3.

[0040] Products

Example Embodiment

[0041] [Example 3]

[0042] As in Example 1, solution (I) and solution (II) were prepared. Take 7.86 g of cobalt nitrate, 1.68 g of barium nitrate, 2.79 g of cerium nitrate, and 1.30 g of potassium nitrate, and dissolve them in 250 ml of water to obtain solution (III).

[0043] Mix the solutions (I), (II), and (III). Add 30 grams of silica and 1.5 grams of alumina.

[0044] The chemical formula of the catalyst is: Mo 1.0 Bi 0.07 V 0.15 Co 0.16 Ba 0.04 K 0.04 Ce 0.08 O x+ 37.5% of the carrier Others are the same as in Example 1. The product yield: 29.89% of ethylene, 7.37% of propylene, 37.25% of diene.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Good technical effect

Catalyst of fluid bed in use for preparing ethane, propylene through catalytic cracking

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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