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Silicon-carrier lanthanum carbonate catalytic cracking microspherical vanadium-resistant aid and preparation method thereof

A catalytic cracking and lanthanum carbonate technology, which is applied in catalytic cracking, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems that cannot meet the actual production, limited hydrofining capacity, and lack of hydrogen sources, etc., and achieve the preparation process Non-toxic, improved distribution, and reduced toxic effects

Active Publication Date: 2012-12-12
REZEL CATALYSTS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the hydrorefining capacity of my country's refineries is limited and the cost is high, coupled with the lack of hydrogen sources, it is far from meeting the needs of actual production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1000 grams of lanthanum carbonate powder (industrial product, Zibo Rongruida Powder Material Factory, 95% by weight) and 3 liters of water are ground and dispersed into a slurry shape. Add 80 grams of 33% by weight hydrochloric acid (industrial product, produced by Hexiang Chemical Factory in Qingdao) and beat for 30 minutes, add 620 milliliters of silica sol (produced by Qingdao Jiyida Silica Gel Reagent Factory, SiO 2 25% by weight, density (25°C) 1.17 g / ml, pH 4.0, viscosity (25°C) ≤ 7.0 millipoise seconds, sodium oxide content ≤ 0.06% by weight) into the gelling kettle, use MBE-100L type high shear After cutting and mixing emulsifier (manufactured by Shanghai Environmental Protection Equipment General Factory) beating and homogenizing for 2 hours, microspheres were made on the laboratory with a small spray dryer (LPG-5 type, manufactured by Changzhou Jianda Drying Equipment Co., Ltd.) to obtain the embodiment 1 silicon-supported lanthanum carbonate catalytic crack...

Embodiment 2

[0031] 870 grams of lanthanum carbonate powder (same as above) and 3 liters of water were ground and dispersed into a slurry with a sand mill (same as above). After adding 230 grams of 33% by weight hydrochloric acid (same as above) for beating for 30 minutes, add 820 milliliters of silica sol (same as above) to the gelling kettle, and use a high-shear mixing emulsifier (same as above) to beat and homogenize for 3 hours before using in the laboratory Make microspheres on the small-sized spray drier (same as above), obtain the anti-vanadium auxiliary agent of silicon carrier lanthanum carbonate catalytic cracking microspheres of embodiment 2, lanthanum oxide content 39 weight %, silicon oxide 24 weight %, chlorine 7.5 weight %, oxidation Sodium 0.02% by weight, the apparent bulk density is 0.75 g / ml, and the specific surface area after 1 hour treatment at 538 ° C is 95 m 2 / g, the average particle diameter is 80 microns, and the loss on ignition after sintering at 954° C. for 1...

Embodiment 3

[0033] 980 grams of lanthanum carbonate powder (same as above) and 3 liters of water were ground and dispersed into a slurry with a sand mill (same as above). After adding 60 grams of 33% by weight hydrochloric acid (same as above) for beating for 30 minutes, add 550 milliliters of silica sol (same as above) to the gelling kettle, use a high-shear mixing emulsifier (same as above) for beating and homogenizing for 1 hour, and then use it in the laboratory Make microspheres on the small-sized spray drier (same as above), obtain the anti-vanadium auxiliary agent of silicon carrier lanthanum carbonate catalytic cracking microspheres of embodiment 3, lanthanum oxide content 44 weight %, silicon oxide 16 weight %, chlorine 2.0 weight %, oxidation Sodium 0.45% by weight, the apparent bulk density is 1.05 g / ml, and the specific surface area after 538 ° C treatment for 1 hour is 22 m 2 / g, the average particle diameter is 40 microns, and the loss on ignition after sintering at 954° C. ...

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Abstract

The invention discloses a silicon-carrier lanthanum carbonate catalytic cracking microspherical vanadium-resistant aid in the process of catalytic cracking of heavy oil, and a preparation method thereof. The aid is characterized by comprising 38 to 45 weight percent of high activity lanthanum oxide, 15 to 25 weight percent of silicon oxide, 1 to 8 weight percent of chlorine, and 0.01 to 0.5 weight percent of sodium oxide. In the preparation process, an acidic silica sol adhesive which contains 20 to 31 weight percent of silicon oxide and has the average particle size of 5 to 30 nanometers andthe pH value of 3.5 to 4.5 is adopted, lanthanum carbonate, hydrochloric acid and chemical water are mixed, pulped and ground in a composition ratio of the aid, and the fluidized solid microsphericalvanadium-resistant aid with the average particle size of 35 to 85 micrometers is formed through atomization. The aid has the apparent bulk density of 0.7 to 1.1 grams / milliliter, and the specific surface area of 20 to 100 square meters / gram; when the aid is used in the process of catalytic cracking of heavy oil, the aid can reduce the poisoning effect of vanadium on a catalyst in a system, improves the conversion efficiency and the yield of light hydrocarbons, and has low coke yield.

Description

technical field [0001] The invention relates to a silicon carrier lanthanum carbonate catalytic cracking microsphere anti-vanadium additive and a preparation method thereof, in particular to a fluidized microsphere anti-vanadium additive composed of a silicon carrier and lanthanum carbonate used in the catalytic cracking process of heavy oil. Vanadium additive and its preparation method. Background technique [0002] In recent years, due to the heavy and inferior quality of crude oil worldwide, heavy and inferior crude oil has inevitably become part or even all of the raw materials in the refining process of refineries. The heavy and inferior quality of crude oil makes the content of heavy metal vanadium in heavy oil (>350℃ fraction) increase significantly. In recent years, the amount of high-vanadium crude oil imported by China has increased year by year and the development and utilization of Tarim Oilfield in Xinjiang has gradually increased. The vanadium content in he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06B01J35/10C10G11/04
Inventor 卓润生
Owner REZEL CATALYSTS CORP
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