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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI 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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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 bu...

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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PUM

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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.

Description

technical field [0001] The invention relates to a fluidized bed catalyst for catalytic cracking to produce ethylene and propylene. Background technique [0002] At present, the most important method of producing ethylene propylene is steam thermal cracking. The most used raw material is naphtha. However, steam thermal cracking of naphtha has high reaction temperature, harsh process conditions, high requirements for equipment, especially furnace tube materials, and releases a large amount of CO. 2 , Loss and other shortcomings. Finding a suitable cracking catalyst to overcome the above-mentioned shortcomings has increasingly become a concern of people. [0003] The patents US4620051 and US4705769 of Phillips Company of the United States have adopted manganese oxide or iron oxide as active components, added rare earth element La, and an oxide catalyst of alkaline earth metal Mg, and cracked C 3 , C 4 raw material. Mn, Mg / Al 2 o 3 The cata...

Claims

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Application Information

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IPC IPC(8): B01J23/44C07C4/06C07C4/10C07C11/04C07C11/06
CPCY02P20/52
Inventor 谢在库姚晖马广伟肖景娴陈亮
Owner CHINA PETROLEUM & CHEM CORP
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