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A kind of catalytic cracking auxiliary agent and preparation method thereof

A catalytic cracking aid, inorganic oxide technology, applied in catalytic cracking, chemical instruments and methods, cracking and other directions, can solve the problems of metal pollution resistance and heavy oil conversion capacity need to be improved, the cost of auxiliary agents is increased, and the price is expensive. Achieve the effect of reducing production cost, improving production efficiency and high light oil yield

Active Publication Date: 2014-10-01
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Among them, the best preparation method of the aluminosilicate compound mentioned in ① can be found in US5045519A. This patent uses aluminum alcohol salt as raw material, which is expensive and greatly increases the cost of additives.
[0005] It can be seen that the prior art is trying various methods that can improve the catalytic performance of the auxiliary agent. Although certain results have been obtained and the cracking of heavy oil has been promoted to a certain extent, the existing preparation of catalytic cracking auxiliary agent However, the method still has problems such as high cost, metal pollution resistance and heavy oil conversion ability to be improved.

Method used

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  • A kind of catalytic cracking auxiliary agent and preparation method thereof
  • A kind of catalytic cracking auxiliary agent and preparation method thereof
  • A kind of catalytic cracking auxiliary agent and preparation method thereof

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preparation example Construction

[0022] In the present invention, the non-ion-exchanged mesoporous silica-alumina material can be various mesoporous silica-alumina materials without any ion exchange commonly used in the art. The non-ion-exchanged mesoporous silica-alumina material can be prepared according to conventional methods, and the preparation method can include, for example, neutralizing the aluminum source and alkali solution at room temperature to 85°C to form a gel, and the final pH of the gel is 7 -11; then follow SiO 2 :Al 2 o 3 =1:0.6-9 weight ratio to add silicon source, aging at room temperature to 90°C for 1-10 hours, and then filter. In the present invention, the silica-alumina precipitate obtained after the filtration can be directly used as the non-ion-exchanged mesoporous silica-alumina material, or it can be used as the ion-free mesoporous silica-alumina material after being dried and / or calcined. Exchanged mesoporous silica-alumina materials.

[0023] In the present invention, the a...

preparation Embodiment 1

[0061] The preparation process of the mesoporous silicon-aluminum material SSA-1 is basically the same as that of the mesoporous silicon-aluminum material SA-1 in Example 1 of CN1565733A, except that the ammonium exchange process is replaced by an acid exchange process. The intermediate sediment of SA-1, i.e. the silicon-aluminum precipitate after aging and filtering, is mixed with water in a weight ratio of 1:10, and then the HCl solution (concentration is 10% by weight) is pressed into the sediment (dry basis): HCl=1:0.07 weight ratio was added to the above slurry, contacted at 55°C for 30 minutes, filtered, dried and calcined to obtain a mesoporous silica-alumina material, denoted as SSA-1. The X-ray diffraction spectrum of the sample is shown in figure 1 Curve 2 in . The elemental analysis gravimetric chemical composition of this sample is 0.14Na 2 O·73.6Al 2 o 3 26.1 SiO2 2 .

preparation Embodiment 2

[0063] The preparation process of the mesoporous silicon-aluminum material SSA-2 is basically the same as that of the mesoporous silicon-aluminum material SA-2 in Example 2 of CN1565733A, except that the ammonium exchange process is replaced by an acid exchange process. The intermediate precipitate of SA-2, that is, the aged and filtered silicon-aluminum precipitate, is mixed with water in a weight ratio of 1:10, and then the HCl solution is weighed according to the weight of the precipitate (dry basis): HCl=1:0.12 Add it to the above slurry, contact it at 55°C for 40 minutes, filter, dry and roast to obtain a mesoporous silicon-aluminum material, which is designated as SSA-2. This sample has figure 1 The characteristics of the X-ray diffraction spectrum line of middle curve 2; its elemental analysis gravimetric chemical composition is 0.1Na 2 O·58.9Al 2 o 3 40.9SiO2 2 .

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Abstract

The invention provides a catalytic cracking auxiliary agent and a preparation method thereof. The catalytic cracking auxiliary agent contains a mesoporous silica alumina material, spinel and / or precursors of the spinel and clay and / or heat-resistant inorganic oxide, wherein the mesoporous silica alumina material is obtained by the following steps of mix-pulping the mesoporous silica alumina material without ion exchange with water to obtain a slurry liquid; and contacting the slurry liquid with an inorganic acid for at least 0.2 hour at a temperature ranging from room temperature to 100 DEG C, so as to make the sodium oxide content in the mesoporous silica alumina material no higher than 0.2 wt%, wherein the weight ratio of the mesoporous silica alumina material without ion exchange, water and the inorganic acid is 1 : 5-30 : 0.03-0.3. The catalytic cracking auxiliary agent has relatively strong heavy oil cracking ability, high light oil yield and good coke selectivity when being used for the catalytic cracking of the heavy oil.

Description

technical field [0001] The invention relates to a catalytic cracking auxiliary agent and a preparation method thereof. Background technique [0002] The continuous rise of crude oil prices has greatly increased the processing costs of refineries. On the one hand, refineries can reduce costs by purchasing low-priced low-quality oil; on the other hand, they can increase economic benefits through deep processing of heavy oil. As an important means of heavy oil processing in refineries, catalytic cracking plays a pivotal role in refineries. It is not only the main means of heavy oil balance and clean fuel production in refineries, but also the focus of energy saving and efficiency enhancement in refineries. Therefore, more and more refineries have turned their attention to the deep conversion of heavy oil, seeking to improve processing capacity and produce more high value-added products in order to maximize benefits. This means converting as much heavy crude as possible and red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/16B01J23/06B01J23/847C10G11/05
Inventor 陈蓓艳蒋文斌宋海涛欧阳颖沈宁元田辉平黄志青罗一斌郑金玉朱玉霞
Owner CHINA PETROLEUM & CHEM CORP
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