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

A co-catalyst and catalytic cracking technology, which is applied in catalytic cracking, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve problems that cannot meet actual production, limited hydrofining capacity, 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: 2012-12-05
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 h

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] Combine 1000 grams of lanthanum carbonate powder (industrial product, Inner Mongolia Baotou Hefa Rare Earth Technology Co., Ltd., lanthanum oxide content of 42-45% by weight) and 800 grams of aluminum sol (industrial product, Qingdao Shida Zhuoyue Technology Co., Ltd., Al 2 O 3 22-24% by weight) in a beating tank for 1 hour, spray-dried on a small spray dryer to form solid microspheres with an average particle diameter of 48 microns, and the exhaust temperature of the sprayer was 240°C to obtain the catalytic cracking microspheres of Example 1. The vanadium promoter has a lanthanum oxide content of 66% by weight and 28% by weight of alumina calculated on an oxide dry basis, an apparent bulk density of 0.75 g / ml, and abrasion strength of 1.7% by weight.

Example Embodiment

[0019] Example 2

[0020] Put 1000g of lanthanum carbonate powder (same as above) and 850g of aluminum sol (same as above) into a beating tank for 1 hour, and spray-dry on a small spray dryer to form solid microspheres with an average particle diameter of 50 microns. The exhaust temperature of the sprayer is 250℃. , The catalytic cracking microsphere anti-vanadium co-catalyst of Example 2 was obtained. The content of lanthanum oxide was 67% by weight, alumina was 29% by weight, the apparent bulk density was 0.85 g / ml, and the abrasion strength was 1.5 weight. %.

Example Embodiment

[0021] Example 3

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

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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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IPC IPC(8): B01J23/10B01J35/08C10G11/04
Inventor 崔超
Owner 崔超
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