Catalyst of fluid bed for preparing ethane and propylene through catalytic cracking

A fluidized bed catalyst, ethylene propylene technology, used in physical/chemical process catalysts, hydrocarbon cracking to hydrocarbon production, organic chemistry, etc., can solve the problems of high reaction temperature, poor selectivity, low catalyst activity, etc., and achieve strong low temperature Active, good technical 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 catalyst for producing ethylene propylene by catalytic cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get 3 grams of ammonium metavanadate, add 100 milliliters of water, drop into 2 milliliters of 80% phosphoric acid, add 3 grams of oxalic acid, heat until the ammonium metavanadate dissolves, and obtain solution (I).

[0027] Get 30 grams of ammonium molybdate, 7.61 grams of ferric nitrate, 10.88 grams of chromium nitrate, and 4.08 grams of lanthanum nitrate and dissolve them in 250 milliliters of water together to obtain solution (II). Dissolve 2.24 grams of diammonium hydrogen phosphate in 100 milliliters of water, pour it into solution (II), and a precipitate will form.

[0028] Pour the solution (I) into (II), heat on a water bath at 70-80° C., add 30 grams of silicon dioxide and 3 grams of aluminum oxide that have been weighed. Reflux for 5 hours, and then dry and shape with a spray dryer.

[0029] After the obtained powder was sieved, the temperature was raised to 740° C. in a muffle furnace and burned for 5 hours. After cooling, the catalyst was ground into pow...

Embodiment 2

[0035] Prepare solution (I) with embodiment 1.

[0036] Another 30 g of ammonium molybdate, 7.61 g of iron nitrate, 5.88 g of zinc nitrate, and 5.60 g of cerium nitrate were dissolved in 250 ml of water to obtain solution (II). Dissolve 2.24 grams of diammonium hydrogen phosphate in 100 milliliters of water, pour it into solution (II), and a precipitate will form.

[0037] The obtained catalyst chemical formula is: Mo 1.0 V 0.15 P 0.10 Fe 0.11 Zn 0.12 Ce 0.08 o x +37.8% carrier

[0038] The catalyst investigation conditions are the same as in Example 1, and the product distribution and diene yield obtained are shown in Table 3.

[0039] product

Embodiment 3

[0041] Prepare solution (I) with embodiment 1.

[0042] Another 30 g of ammonium molybdate, 7.61 g of iron nitrate, 7.29 g of nickel nitrate, 5.60 g of lanthanum nitrate, and 5.18 g of calcium nitrate were dissolved in 250 ml of water to obtain solution (II). Dissolve 2.24 grams of diammonium hydrogen phosphate in 100 milliliters of water, pour it into solution (II), and a precipitate will form.

[0043] The catalyst chemical formula obtained is: Mo 1.0 V 0.15 P 0.10 Fe 0.11 Ni 0.15 Ca 0.13 La 0.08 o x +35.1% carrier

[0044] The conditions for catalyst investigation were the same as those in Example 1, and the product yields obtained were ethylene: 25.77%, propylene: 15.29%, and diene: 41.06%.

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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 Mo1.0VaPbAcBdOx. It has high low-temp activity, selectivity and low reaction temp.

Description

technical field [0001] The invention relates to a fluidized bed catalyst for preparing ethylene and propylene by catalytic cracking. 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 the disadvantages of high reaction temperature, harsh process conditions, high requirements for equipment, especially furnace tube materials, and large losses. 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 catalyst is in a laboratory fixed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/14C07C4/06C07C4/10C07C5/32C07C11/04C07C11/06C10G45/26
CPCY02P20/52
Inventor 姚晖谢在库马广伟肖景娴陈亮杨为民
Owner CHINA PETROLEUM & CHEM CORP
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