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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 of the catalyst used in the existing catalytic cracking technology, and provide a new fluidized bed for catalytic cracking to produce ethylene propylene catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 5.89 g of bismuth nitrate and dissolve it in 10 ml of 1:1 concentrated nitric acid to obtain a yellow solution. Get another 30 grams of ammonium molybdate and dissolve it in 200 milliliters of water, pour it into bismuth nitrate solution, stir, and make solution (I).

[0029] Take another 3 g of ammonium metavanadate, add 100 ml of water, add dropwise 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] Take 7.86 grams of cobalt nitrate, 5.58 grams of cerium nitrate, and 6.72 grams of calcium nitrate, and dissolve the three together in 250 milliliters of water to obtain solution (III).

[0031] Mix the solutions (I), (II) and (III), heat on a water bath at 70-80° C., add 25 grams of weighed silicon dioxide and 1 gram of aluminum oxide. Reflux for 5 hours, and then dry and shape with a spray dryer. After sieving the obtained powder, place it in a muffle furnace and raise the te...

Embodiment 2

[0036] Prepare solution (I) and solution (II) with embodiment 1. Take 10.91 grams of iron nitrate, 3.73 grams of nickel nitrate, 5.85 grams of lanthanum nitrate, and 1.1 grams of potassium nitrate, and dissolve them in 250 milliliters of water to obtain solution (III).

[0037] Mix solutions (I)(II)(III) together. Add 25 grams of silicon dioxide and 1 gram of aluminum oxide.

[0038] The catalyst chemical formula obtained 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] product

Embodiment 3

[0042] Prepare solution (I) and solution (II) with embodiment 1. Take 7.86 grams of cobalt nitrate, 1.68 grams of barium nitrate, 2.79 grams of cerium nitrate, and 1.30 grams of potassium nitrate, and dissolve them in 250 ml of water to obtain solution (III).

[0043] Mix solutions (I)(II)(III) together. Add 30 grams of silicon dioxide and 1.5 grams of aluminum oxide.

[0044] The catalyst chemical formula obtained 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% carrier Others are the same as Example 1, product yield: ethylene 29.89%, propylene 7.37%, diene 37.25%.

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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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