Catalytic cracking addition agent with high productivity of propylene and preparation method thereof

A catalytic cracking aid, propylene yield technology, applied in catalytic cracking, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low propylene conversion selectivity, insufficient hydrothermal activity stability, and heavy hydrocarbon oil adaptability. It can achieve the effects of excellent propylene selectivity, improved catalytic cracking conversion rate, and wide application range.

Inactive Publication Date: 2011-06-01
青岛鼎诺化工技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its hydrothermal activity stability is not high enough, its conversion selectivity to propylene is low, and its adaptability to heavy hydrocarbon oil is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] a. Preparation of aluminum phosphorous solution: Dissolve 0.65 kg (dry basis) of pseudo-boehmite (raw material: solid content of 73.67 wt%, produced by Shandong Aluminum Factory) and 2.52 kg of 85% orthophosphoric acid in deionized water. Mix and prepare a phosphor-aluminum glue with a solid content of 30wt / %, stir and peptize at a temperature of 20°C to 60°C for 1 to 5 hours under stirring; prepare a phosphor-aluminum solution for use;

[0043] b. Preparation of ZSM-5 molecular sieve modified by multiple organic acids: weigh 4 kg of ZSM-5 molecular sieve, add water to prepare a slurry with a solid content of 10%, add 3 kg of oxalic acid during stirring, and stir at 20-90℃ for reaction For 1 to 5 hours, filter and wash the filter cake with ion-free water until the filtrate is neutral and set aside;

[0044] c. Rare earth conversion: the polybasic acid modified ZSM-5 molecular sieve filter cake prepared in step b is beaten with water and prepared into a molecular sieve slurry...

Embodiment 2

[0049] According to the method of Example 1, the raw material ratio is: 0.54 kg pseudo-boehmite, 2.44 kg 85% orthophosphoric acid, 3.0 kg ZSM-5 molecular sieve, 6.0 kg EDTA, La 2 O 3 0.10 kg, Ce 2 O 3 0.20 kg, 3.3 kg of kaolin, and 1.65 kg of aluminum solution.

Embodiment 3

[0051] According to the method in Example 1, the raw material ratio is: 074 kg pseudo-boehmite, 2.84 kg 85% orthophosphoric acid, 4.5 kg ZSM-5 molecular sieve, 2.0 kg citric acid, Ce 2 O 3 0.21 kg, 3.0 kg of kaolin, 1.12 kg of aluminum solution.

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PUM

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Abstract

The present invention discloses a catalytic cracking assistant for high propylene yield and a preparation method thereof, which pertains to the hydrocarbon oil catalytic cracking assistant catalyst and is characterized by being composed of the following components (wt / %): 10-60 polybasic organic acid modified ZSM-5 molecular sieve, 10-40 Al2O3, 1-20 P (counted by P element), 1-15 rare earth element (counted by RE2O3) and 5-40 clay. Compound use of the assistant and catalytic cracking catalysts in the invention is fit for heavy hydrocarbon oil and hydrocarbon oil of catalytic cracking raw materials from various sources. The catalytic cracking assistant has good propylene selectivity, high catalytic cracking conversion rate, high liquefied gas yield, high propylene content in the liquefied gas and no dry gas or coke increase and greatly improves hydro-thermal activity stability of the main catalyst, thus is an ideal catalytic cracking assistant for high propylene yield.

Description

Technical field [0001] The invention is a catalytic cracking aid with high propylene yield and a preparation method thereof. It is an auxiliary catalyst for the catalytic cracking of hydrocarbon oil. Background technique [0002] Propylene is the basic chemical raw material for organic synthesis, especially the synthesis of polymer materials. The market demand is increasing year by year, and it plays an important role in the development of the national economy. In the prior art catalytic cracking production process, propylene is present in the liquefied petroleum gas as a by-product of the production of gasoline and light diesel. Therefore, increasing the propylene content in the liquefied gas is the key to increasing the propylene yield in the hydrocarbon oil catalytic cracking unit. C in liquefied gas 4 , C 5 Distillate is burned as fuel, which not only wastes precious non-renewable energy, but also pollutes the environment. If it can be converted into propylene products req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/40C10G11/05
Inventor 丁泳
Owner 青岛鼎诺化工技术有限公司
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