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A kind of recovery and reuse method of vanadium-containing waste catalytic cracking balance agent

A catalytic cracking and balancing agent technology, applied in chemical recovery, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of gaseous waste, large amount of ammonium sulfate, etc.

Active Publication Date: 2017-07-04
任丘市华北石油科林环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will inevitably produce a large amount of metal-containing acidic waste liquid, which needs further treatment.
[0004] Disclosed in CN1035104C is a method for washing heavy metals with ammonium sulfate and waste catalytic cracking balancer after solid-phase reaction. In this method, the amount of ammonium sulfate is too large, and serious environmental protection problems exist in the process
However, these technologies either only partially recycle the spent balance catalyst, or further generate gaseous, solid or liquid waste

Method used

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  • A kind of recovery and reuse method of vanadium-containing waste catalytic cracking balance agent
  • A kind of recovery and reuse method of vanadium-containing waste catalytic cracking balance agent
  • A kind of recovery and reuse method of vanadium-containing waste catalytic cracking balance agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 100 kg of vanadium-containing waste catalytic cracking balancer was continuously added to a small rotary kiln, and roasted at 400°C for 1 hour in an oxygen-rich atmosphere to remove coke deposits and organic matter. After roasting, vanadium waste catalytic cracking balancer was prepared; the roasting process is Convert vanadium in vanadium-containing waste catalytic cracking balancer into vanadium oxide.

[0044] Put 30 kilograms of deionized water and 15 kilograms of roasting-vanadium waste catalytic cracking balance agent into the enamel stirred tank, heat up to 65°C under stirring at 800 rpm, add 50 grams of oxalic acid, continue stirring for 30 minutes, and then add hydrochloric acid (Industrial hydrochloric acid with a concentration of 31 parts by weight) 100 g, continue to stir for 45 minutes to prepare a mixed solution. Filter the mixed solution to get rich SiO 2 Filter cake and filtrate containing aluminum and vanadium. The rich SiO obtained in Example 1 2 The fil...

Embodiment 2

[0046] 100 kg of vanadium-containing waste catalytic cracking balancer was continuously added to a small rotary kiln, and roasted at 400°C for 1 hour in an oxygen-rich atmosphere to remove coke deposits and organic matter. After roasting, vanadium waste catalytic cracking balancer was prepared; the roasting process is Convert vanadium in vanadium-containing waste catalytic cracking balancer into vanadium oxide.

[0047] Put 30 kilograms of deionized water and 15 kilograms of roasting-vanadium waste catalytic cracking balance agent into the enamel stirred tank, heat up to 65°C under stirring at 800 rpm, add 100 grams of oxalic acid, continue stirring for 30 minutes, and then add hydrochloric acid ( 200 grams of industrial hydrochloric acid with a concentration of 31 parts by weight), and continued stirring for 45 minutes to prepare a mixed solution. Filter the mixed solution to get rich SiO 2 Filter cake and filtrate containing aluminum and vanadium. The rich SiO obtained in Exam...

Embodiment 3

[0049] 100 kg of vanadium-containing waste catalytic cracking balancer was continuously added to a small rotary kiln, and roasted at 400°C for 1 hour in an oxygen-rich atmosphere to remove coke deposits and organic matter. After roasting, vanadium waste catalytic cracking balancer was prepared; the roasting process is Convert vanadium in vanadium-containing waste catalytic cracking balancer into vanadium oxide.

[0050] Put 30 kilograms of deionized water and 15 kilograms of roasting-vanadium waste catalytic cracking balance agent into the enamel stirring tank, heat up to 65°C under stirring at 800 rpm, add 150 grams of oxalic acid, continue stirring for 30 minutes, and then add hydrochloric acid ( 350 grams of industrial hydrochloric acid with a concentration of 31% by weight), and continue to stir for 45 minutes to prepare a mixed solution. Filter the mixed solution to get rich SiO 2 Filter cake and filtrate containing aluminum and vanadium. The rich SiO obtained in Example 3 ...

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Abstract

The invention discloses a recycling method of a vanadium-containing waste FCC (fluid catalytic cracking) equilibrium catalyst. The method comprises the following steps: step A, the vanadium-containing waste FCC equilibrium catalyst is roasted in an oxygen-enriched atmosphere to enable vanadium in the waste FCC equilibrium catalyst to be converted into vanadium oxide; step B, a product in the step A is mashed with deionized water and dispersed into slurry; step C, oxalic acid and dilute hydrochloric acid are added under stirring, vanadium oxide and aluminum oxide in the waste FCC equilibrium catalyst are dissolved into a solution sequentially, filtering is performed, and a SiO2-enriched filter cake and a vanadium-aluminum-containing filtrate are obtained. The SiO2-enriched filter cake is used for partially replacing a kaolin raw material for preparation of an FCC yield-increase low-carbon-olefin additive. The vanadium-aluminum-containing filtrate is taken as a raw material required by an FCC sulfur transfer additive for preparation of the sulfur transfer additive. When the vanadium-containing waste FCC equilibrium catalyst is treated with the method, solid, liquid and gas emission is avoided, and complete recycling of the vanadium-containing waste FCC equilibrium catalyst is realized truly.

Description

Technical field [0001] The invention relates to a method for recycling and utilization, and more particularly, to a method for recycling and recycling vanadium-containing waste catalytic cracking balancer. Background technique [0002] Catalytic cracking (FCC) is one of the core technologies for oil refineries to produce high-value products such as gasoline, diesel, and low-carbon olefins from heavy oil. The use of FCC catalyst is the key to FCC process. At present, the use of catalytic cracking catalysts in my country is more than 150,000 tons per year, and about half of them are taken away with the regenerated flue gas and catalytic oil slurry and cannot be recycled (so-called natural running losses). Therefore, there are more than 6,000 tons per year. Spent FCC balancer needs to be treated. The reason why these spent catalytic cracking balancers cannot be used continuously and must be regularly discharged from the FCC unit is because the spent catalytic cracking balancers hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/40C07C11/06C07C4/06B01J23/22B01D53/86B01D53/50
CPCY02P20/52Y02P20/584
Inventor 郭佳艺刘文香郭子愉
Owner 任丘市华北石油科林环保有限公司