A kind of alkali-resistant nitrogen catalytic cracking catalyst and preparation method thereof

A catalytic cracking and catalyst technology, used in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of deterioration of product distribution and reduction of conversion activity, and achieves alleviating toxic effects, improving activity stability, and significantly resisting. The effect of alkali nitrogen properties

Active Publication Date: 2014-10-29
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0008] Although the above-mentioned methods can be used to prepare rare earth-containing Y-type molecular sieves suitable for use as active components of catalytic cracking catalysts, the rare-earth-containing Y molecular sieves prepared by these methods are used as active components of cracking agents. When using wax oil raw materials, it still faces the problems of reduced conversion activity and poor product distribution

Method used

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  • A kind of alkali-resistant nitrogen catalytic cracking catalyst and preparation method thereof
  • A kind of alkali-resistant nitrogen catalytic cracking catalyst and preparation method thereof
  • A kind of alkali-resistant nitrogen catalytic cracking catalyst and preparation method thereof

Examples

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preparation example Construction

[0031] The preparation method of the anti-alkali nitrogen catalytic cracking catalyst provided by the invention preferably comprises the following steps:

[0032] (1) Using NaY molecular sieve as raw material, after rare earth exchange and roasting, "cross-baking" RENaY is obtained; then react with rare earth compounds, iron-containing substances, copper-containing substances, phosphorus-containing substances, and ammonium salts to obtain The Y-type molecular sieve product modified with rare earth, iron, copper and phosphorus;

[0033] Wherein, the described process of obtaining "one-baking" RENaY is well known to those skilled in the art, usually NaY and rare earth compound are mixed in NaY:RE 2 o 3 =1:0.10-0.25 (weight ratio), pH=2.0-4.5, exchange temperature 25-100°C for 0.3-1.5 hours, filter, wash, filter cake at 400-850°C, 0-100% steam It is obtained by roasting for more than 0.3 hours. Further, the described process of reacting with rare earth compounds, iron-containi...

Embodiment 1

[0045] This example is used to illustrate the catalytic cracking catalyst provided by the present invention.

[0046] (1) Preparation of modified Y-type molecular sieve

[0047]In the reactor, add 5.0 kilograms of NaY molecular sieves on a dry basis (Changling Catalyst Factory provides, crystallinity 86%, skeleton silicon-aluminum ratio 5.2) and 4 kilograms of deionized water, slowly add 4.0 liters of rare earth chloride solution ( Provided by Qilu Catalyst Factory, RE 2 o 3 content of 222.5 grams per liter), adjust the system pH=3.5 with 4% by weight dilute hydrochloric acid, heat up to 90°C and stir for 1.5 hours, filter, wash, and dry; then bake at 650°C and 100% steam atmosphere for 2 hours to prepare Get "cross-baked" rare earth sodium Y, which is recorded as modified molecular sieve ABY-1A.

[0048] Take 2.0 kg of modified molecular sieve ABY-1A dry basis and put it into the reactor, add 1.6 kg of deionized water, slowly add 0.50 liter of rare earth chloride, 135 g of...

Embodiment 2-7

[0055] This example is used to illustrate the catalytic cracking catalyst provided by the present invention.

[0056] Prepare catalytic cracking catalyst according to the method of embodiment 1 respectively, difference is, in step (2), mesoporous silica-alumina material, kaolin, modified Y-type molecular sieve, described second Y-type molecular sieve, described third Y-type molecular sieves, pseudo-boehmite, and alumina sol are shown in Table 1 below in terms of dry basis, wherein the amounts of each component are in parts by weight, so that catalytic cracking catalysts C2-C7 are prepared respectively. .

[0057] Table 1

[0058]

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Abstract

The invention relates to an anti-basic nitrogen catalysis cracking catalyst and a preparation method thereof. The catalyst comprises a cracking activity component, clay and an adhesive, and contains or does not contain a mesoporous silicon-aluminum material, wherein the cracking activity component comprises a Y type molecular sieve modified by using rare earth, iron, cooper and phosphorus, rare earth content in the molecular sieve is 8-23 wt% (calculated as rare earth oxide), iron content in the molecular sieve is 0.1-3.0 wt% (calculated as Fe2O3), copper content in the molecular sieve is 0-3.0 wt% (calculated as CuO), phosphorus content in the molecular sieve is 0-2.0 wt% (calculated as P2O5), and sodium oxide content in the molecular sieve is 0.1-2.5 wt%. The catalyst preparation method comprises: carrying out mixing pulping on a cracking activity component, a mesoporous silicon-aluminum material, an adhesive and clay, and sequentially carrying out spray drying, washing, filtering and drying. With application of the catalyst in catalytic cracking of high basic nitrogen content hydrocarbon oil, high activity is provided.

Description

technical field [0001] The invention relates to an alkali-nitrogen-resistant catalytic cracking catalyst and a preparation method thereof, more particularly, to a Y-type molecular sieve cracking catalyst and a preparation method thereof. Background technique [0002] Catalytic cracking (FCC) is an important secondary processing process of crude oil and occupies a pivotal position in the oil refining industry. In the catalytic cracking process, heavy fractions such as vacuum distillate oil or residues of heavier components react in the presence of catalysts and are converted into high value-added products such as liquefied gas, gasoline, and diesel oil. In this process, it is usually necessary to use Catalytic material with high cracking activity. Microporous zeolite catalytic materials are widely used in petroleum refining and processing industries due to their excellent shape-selective catalytic performance and high cracking reactivity. With the depletion of petroleum res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/14C10G11/05
Inventor 朱玉霞罗一斌许明德王维家杨雪邓景辉郑金玉唐立文欧阳颖任飞
Owner CHINA PETROLEUM & CHEM CORP
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