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Catalytic cracking microsphere anti-vanadium cocatalyst and preparation method and application thereof

A co-catalyst and catalytic cracking technology, which is applied in the direction of catalytic cracking, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of limited hydrofining capacity, which cannot meet the actual production, hydrogen source Insufficient and other problems, to achieve the effect of improving production economic benefits, relieving conditions, and reducing poisoning and destructive effects

Inactive Publication Date: 2014-11-26
崔超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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

[0018] 1000 grams of lanthanum carbonate powder (industrial product, Inner Mongolia Baotou Hefa Rare Earth Technology Co., Ltd., lanthanum oxide content 42 ~ 45% by weight) and 800 grams of aluminum sol (industrial product, Qingdao Shida Excellence Technology Co., Ltd., Al 2 o 3 22~24% by weight) in the beating tank for beating for 1 hour, spray drying and molding on a small spray drier to make solid microspheres with an average particle diameter of 48 microns, and 240° C. of sprayer tail gas temperature to obtain the catalytic cracking microspheres of embodiment 1. The vanadium co-catalyst has a content of 66% by weight of lanthanum oxide and 28% by weight of aluminum oxide calculated on an oxide dry basis, an apparent bulk density of 0.75 g / ml, and an abrasion strength of 1.7% by weight.

Embodiment 2

[0020] Put 1,000 grams of lanthanum carbonate powder (same as above) and 850 grams of aluminum sol (same as above) into a beating tank for beating for 1 hour, then spray dry them on a small spray dryer to form solid microspheres with an average particle diameter of 50 microns, and the temperature of the sprayer tail gas is 250 °C , obtain the catalytic cracking microsphere anti-vanadium promoter of embodiment 2, its lanthanum oxide content 67 weight %, aluminum oxide 29 weight % calculated by oxide dry basis, apparent bulk density is 0.85 g / ml, abrasion strength 1.5 weight % %.

Embodiment 3

[0022] Put 1000 grams of lanthanum carbonate powder (same as above) and 750 grams of aluminum sol (same as above) into the beating tank for beating for 1 hour, spray dry and form solid microspheres with an average particle diameter of 49 microns on a small spray dryer, and the temperature of the tail gas of the spray tower is 210 ℃, the catalytic cracking microsphere anti-vanadium co-catalyst of embodiment 3 was obtained, and its content of lanthanum oxide calculated on an oxide dry basis was 67% by weight, alumina 26% by weight, the apparent bulk density was 0.72 g / ml, and the wear strength was 1.8% Heavy%.

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Abstract

The invention discloses a microsphere anti-vanadium cocatalyst for use in a heavy oil catalytic cracking process and a preparation method and an application thereof. The cocatalyst is characterized by comprising 60-75 percent by weight of lanthanum oxide and 20-35 percent by weight of aluminum oxide in a chemical composition counted by the dry basis of an oxide, and being a fluidized solid microsphere anti-vanadium cocatalyst of which the average particle diameter is 40-70 microns prepared by mixing and pulping 40-50 percent by weight of lanthanum carbonate containing lanthanum oxide and 20-25 percent by weight of aluminum sol containing aluminum oxide, and performing spray drying and molding at the temperature of 150-300 DEG C, wherein the apparent bulk density is 0.6-1.0 g / ml, and the tear strength is less than 3.0 percent by weight. The preparation process of the microsphere anti-vanadium cocatalyst disclosed by the invention is simple; and when the cocatalyst prepared with the method is added in an amount of 0.5-15 percent by weight of the total weight of a catalyst in a catalytic cracking device system, the poisoning destruction effect of vanadium in heavy crude oil on the catalyst in the system can be reduced, the agent consumption is lowered, the transformation efficiency of raw materials is increased, the yield of light hydrocarbons in a product is increased, and the production economic benefit of the device is increased.

Description

technical field [0001] The present invention relates to a catalytic cracking anti-vanadium promoter and its preparation method and application, in particular to a fluidized microsphere anti-vanadium promoter composed of aluminum sol and lanthanum carbonate used in the catalytic cracking process of heavy oil and Its preparation method and application process. 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 heavy oil is generally higher th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/10B01J35/08C10G11/04
Inventor 崔超
Owner 崔超
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