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Coked gasoline desilication catalyst and preparation method thereof

A technology for coking gasoline and catalysts, which is applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Removal and other problems to achieve the effect of improving silicon capacity

Active Publication Date: 2015-04-08
WUHAN KELIN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Part of the silicon-containing compound can be removed through the adsorbent bed containing pseudo-boehmite and silicon oxide, but the macromolecular organosilicon is not easy to decompose in this case, and it is difficult to remove by adsorption, and the process of this method is relatively long

Method used

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  • Coked gasoline desilication catalyst and preparation method thereof
  • Coked gasoline desilication catalyst and preparation method thereof
  • Coked gasoline desilication catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Add 122g of pseudoboehmite (water content 30%, the same below), 12.3g of metatitanic acid, 3g of boron oxide, and 3.4g of cerium nitrate into a mortar and stir evenly, and add three times the volume of the carrier to the obtained powder at 65°C for desalination Water is slowly added into the colloid abrasive hopper for colloid mill processing, and the colloid mill gap is adjusted to 0.5mm. The slurry treated by the colloid mill is sent to the spray dryer for spray drying. During the spray drying process, the ratio of the catalyst material to water is 1:1, the air temperature is adjusted to 220°C, and the feed rate is adjusted to 1000ml / h. After the material, add 2.5g of ethylene glycol, 1.0g of scallion powder and appropriate amount of distilled water, stir evenly, extrude and shape, dry at 100°C for 5h, then raise the temperature to 700°C and roast in air for 2h, then pass in water Steam, the volume ratio of water vapor and air is 1:10, keep the temperature at 600°C for...

Embodiment 2

[0029] Add 108.6g of pseudoboehmite, 18.4g of metatitanic acid, 7g of boron oxide, and 4.5g of cerium chloride into a mortar and stir evenly. Add three times the volume of carrier desalted water at 65°C to the obtained powder, and slowly add colloidal abrasive The colloid mill is processed in the bucket, and the gap between the colloid mill is adjusted to 0.5mm. The slurry treated by the colloid mill is sent to the spray dryer for spray drying. During the spray drying process, the ratio of catalyst material to water is 1:5, the air temperature is adjusted to 220°C, and the feed rate is adjusted to 1000ml / h. After the material, add 3.5g of starch, 3.0g of safflower powder and an appropriate amount of distilled water, stir evenly, extrude, dry at 150°C for 5h, then raise the temperature to 700°C and roast in the air for 2h, then pass in water vapor, The volume ratio of water vapor to air is 2:10, keep the temperature at 600°C for another 2h, then stop the introduction of water v...

Embodiment 3

[0031] Add 96.4g of pseudoboehmite, 24.5g of metatitanic acid, 10g of boron oxide, and 5.6g of cerium nitrate into a mortar and stir evenly. Add three times the volume of carrier desalted water at 65°C to the obtained powder, and slowly add it to the colloidal abrasive hopper The colloid mill treatment is carried out in the middle, and the colloid mill gap is adjusted to 0.5mm. The slurry treated by the colloid mill is sent to the spray dryer for spray drying. During the spray drying process, the ratio of catalyst material to water is 1:1, the air temperature is adjusted to 220°C, and the feed rate is adjusted to 1000ml / h. After that, add 3.0g of diethylene glycol, 2.0g of kale powder and an appropriate amount of distilled water, stir evenly, extrude, dry at 130°C for 5 hours, then raise the temperature to 700°C and roast in the air for 2 hours, and then add water Steam, the volume ratio of water vapor and air is 1:10, keep the temperature at 600°C for another 2h, then stop fe...

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Abstract

The invention discloses a coked gasoline desilication catalyst and a preparation method thereof. The coked gasoline desilication catalyst disclosed by the invention contains an Al2O3-TiO2-B2O3 composite oxide as a carrier and Ni-Mo-W-Ce as an active component; the used Al2O3-TiO2-B2O3 carrier comprises the following components in percentage by weight: 10-20% of TiO2, 3-10% of B2O3, and the balance of Al2O3; and, in terms of the weight percentage of the catalyst, the active component comprises the following components in percentage by weight: 1.2-3.9% of NiO, 4.2-9.5% of MoO3, 5-15% of WO3, 1.5-2.5% of CeO2, and the balance of the carrier. The coked gasoline desilication catalyst disclosed by the invention is roasted in the atmosphere of water vapor, has a special pore diameter and higher pore volume, and is capable of effectively adsorbing and desorbing silicon impurities and protecting subsequent purification of the catalyst by mainly adding hydrogen into coked gasoline.

Description

technical field [0001] The invention relates to a coking gasoline desiliconization catalyst and a preparation method thereof, especially used in the coking gasoline hydrofining process, which can effectively absorb and remove impurity silicon to protect the subsequent coking gasoline main hydrofining catalyst. Background technique [0002] With the rise of energy prices, the quality of raw oil products is deteriorating day by day, and the processing depth is continuously improved. As a main product of delayed coking, coker gasoline can be used as raw materials for steam cracking to ethylene, catalytic reforming, and large chemical fertilizers. , It can also be used as a blending component of motor gasoline. However, there are silicon-containing compounds, unsaturated hydrocarbons, and heavy metal impurities in coking gasoline, which have poor stability and are difficult to be directly used as raw materials for the next process. It must be hydrotreated to improve its stabilit...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J20/08C10G45/08C10G25/00
Inventor 王国兴张先茂夏大寒王泽金建涛陈宗杰吴阳春王骥飞周正王天元
Owner WUHAN KELIN FINE CHEM
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