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Silicon-aluminum dual binding agent vanadium-resisting additive and preparation method thereof

A dual-binder, vanadium additive technology, applied in chemical instruments and methods, physical/chemical process catalysts, petroleum industry, etc., can solve problems such as easy dilution, affecting the stable operation of the device, and insufficient conversion capacity of heavy oil. Achieve the effects of reducing poisoning, non-toxic preparation process, and improving production efficiency

Inactive Publication Date: 2012-12-12
ZHEJIANG MEIFU PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, an obvious problem in the use of additives is that it is easy to dilute the content of the main catalyst, resulting in insufficient conversion capacity of heavy oil in the system, which affects the smooth operation of the device, especially when the proportion of slag is getting higher and higher. Down

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] With 1000 grams of lanthanum chloride (industrial product, Zibo Rongruida powder material factory, La 2 o 3 42% by weight) is dissolved in 4 liters of water, adds 270 gram aluminum hydroxide powders (industrial product, Shandong aluminum factory produces, SiO 2 2 o 3 2 O2 25% by weight, density (25°C) 1.17 g / ml, pH 4.0, viscosity (25°C) ≤ 7.0 mpos, Na 2 O≤0.06% by weight) in the gel forming still, with MBE-100L type high-shear mixing emulsifier (manufactured by Shanghai Environmental Protection Equipment General Factory) beating and homogenizing after 2 hours in the laboratory with a small spray dryer (LPG-5 type , Changzhou Jianda Drying Equipment Co., Ltd.) made of microspheres, the tail gas temperature of 280 ° C. Obtain the anti-vanadium auxiliary agent of silicon-aluminum double binder catalytic cracking microspheres of embodiment 1, lanthanum oxide content 41.5 weight %, aluminum oxide 16.8 weight %, silicon oxide 5.8 weight %, chlorine 10.5 weight %, sodium ...

Embodiment 2

[0032] 220 grams of lanthanum chloride (same as above) are dissolved in 3 liters of water, add 700 grams of aluminum hydroxide powder (same as above) and 300 grams of hydrochloric acid (same as above) of 33% by weight for beating for 30 minutes, add 200 milliliters of silica sol (same as above) to In the gelling kettle, use a high-shear mixing emulsifier (same as above) to beat and homogenize for 3 hours, then make microspheres on a small spray dryer (same as above) in the laboratory, and the tail gas temperature is 180 ° C. Obtain the anti-vanadium auxiliary agent of silicon-aluminum double binder catalytic cracking microspheres of embodiment 2, lanthanum oxide content 9.2 weight %, aluminum oxide 45.2 weight %, silicon oxide 6.1 weight %, chlorine 17.1 weight %, sodium oxide 0.02 weight % , with an apparent bulk density of 1.05 g / ml and a specific surface area of ​​105 m after being treated at 538°C for 1 hour 2 / g, the average particle diameter is 65 microns.

Embodiment 3

[0034] 960 grams of lanthanum chloride (same as above) are dissolved in 4 liters of water, add 250 grams of aluminum hydroxide powder (same as above) and 90 grams of hydrochloric acid (same as above) of 33% by weight after beating for 30 minutes, add 430 milliliters of silica sol (same as above) to In the gelling kettle, use a high-shear mixing emulsifier (same as above) to beat and homogenize for 1 hour, then make microspheres on a small spray dryer (same as above) in the laboratory, and the tail gas temperature is 260 ° C. Obtain the anti-vanadium auxiliary agent of silicon-aluminum double binder catalytic cracking microspheres of embodiment 3, lanthanum oxide content 40.1 weight %, aluminum oxide 16.2 weight %, silicon oxide 12.5 weight %, chlorine 9.3 weight %, sodium oxide 0.41 weight % , with an apparent bulk density of 0.91 g / ml and a specific surface area of ​​32 meters after being treated at 538°C for 1 hour 2 / g, the average particle diameter is 45 microns.

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Abstract

The invention relates to a silicon-aluminum dual binding agent vanadium-resisting additive used in a heavy oil catalytic cracking process and a preparation method thereof. The additive is characterized by comprising the following components in percent by weight: 5-45 percent of lanthana, 15-50 percent of aluminum oxide, 5-15 percent of silicon oxide, 5-20 percent of chlorine and 0.01-0.5 percent of sodium oxide. The preparation method comprises the steps of: adding the lanthana, chemical water, aluminium hydroxide and hydrochloric acid according to the requirement of the composition of the additive, wherein the aluminium hydroxide / hydrochloric acid accounts for 5-20 percent by weight; and finally, adding an acidic silica sol binding agent, mixing and pulping, homogenizing and grinding, spraying and drying to form fluidized solid microspheres with an average particle diameter of 35-85micrometers, wherein the fluidized solid microspheres have surface appearance stacking density of 0.7-1.3g / ml and specific surface area of 20-120m<2> / g. When the fluidized solid microspheres are added in an additive form and applied to the heavy oil catalytic cracking process, the intoxication of vanadium in lube oil feedstock to a system catalyst can be reduced; and according to a silicon-aluminum dual binding agent with high activity, the conversion of the heavy oil can be promoted and the yield of light oil is increased.

Description

technical field [0001] The invention relates to a silicon-aluminum double-binder anti-vanadium additive and a preparation method thereof, in particular to a fluidized catalyst composed of a silicon-aluminum double-binder and lanthanum chloride used in the catalytic cracking process of heavy oil. Microsphere anti-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 heavy oil is generally higher tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/125C10G11/04
Inventor 卓润生
Owner ZHEJIANG MEIFU PETROCHEMICAL CO LTD
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