CN101518746A - Method for recycling waste oil-refining catalysts - Google Patents
Method for recycling waste oil-refining catalysts Download PDFInfo
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- CN101518746A CN101518746A CN200910010741A CN200910010741A CN101518746A CN 101518746 A CN101518746 A CN 101518746A CN 200910010741 A CN200910010741 A CN 200910010741A CN 200910010741 A CN200910010741 A CN 200910010741A CN 101518746 A CN101518746 A CN 101518746A
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Abstract
The invention provides a method for recycling waste oil-refining catalysts produced during catalytic cracking in the oil-refining chemical field. The method comprises the steps of putting discharged water catalysts in a container, pouring acidic regulators into the container according to the experimental dosage of the waste catalysts and acid, stirring the obtained product for one hour at natural temperature and turning the obtained product into regenerative catalysts. By redistributing heavy metal molecules of the waste catalysts and strengthening the acidic activity center of the waste catalysts through the acidic regulators, the waste catalysts can be recycled. The method has the characteristics of saving energy, protecting environment, saving and reducing production cost, achieves the effects of circular economy, and is suitable for recycling the waste catalysts produced by the catalytic cracking of the oil refining industry.
Description
Technical field
What the present invention proposed is the method for recycling waste oil-refining catalysts that oil-refining chemical field catalytic cracking process is produced.
Background technology
In the refining catalytic cracking unit, prolongation along with the time, carbon distribution increases on the catalyst surface, cause activity of such catalysts to descend, and contain heavy metal in the feedstock oil, with the contact process of catalyst in be adsorbed on catalyst surface and make catalyst poisoning, as the compound and the acid centre effect of nickel, activity of such catalysts is descended.Also have the wax oil of coking in the feedstock oil, this wax oil contains basic nitrogen can make 3-5 unit of catalyst lateral reactivity decline.For guaranteeing that catalyst activity must draw off catalyst, the catalyst that draws off is a dead catalyst.The amount that perfect condition, raw band increase for the catalyst heavy metal equals the amount that catalyst runs damage naturally and adds the amount that dead catalyst carries heavy metal that draws off.The present processing method of the dead catalyst that draws off is to carry out nuisanceless landfill as " danger is useless ", increases investment like this, also brings pollution to environment.
Summary of the invention
In order to realize that dead catalyst that the refining catalytic cracking process produced can regeneration, the present invention proposes the dead catalyst renovation process.This method solves the technical problem of dead catalyst regeneration by dead catalyst is carried out acid treatment.
The present invention solves the scheme that its technical problem takes: the dead catalyst that draws off is placed in the container, pours acid regulator into by the dead catalyst and the test consumption of acid then, under the natural temperature condition, stirred 1 hour, become regenerated catalyst.
Good effect to the heavy metal molecule redistribution of dead catalyst and the reinforcement in the acid activated centre of dead catalyst, can be realized the regeneration of dead catalyst through acid regulator.The characteristics that have energy-saving and environmental protection and saving, reduce production costs, reach recycling economy effect.The regeneration of the dead catalyst that suitable oil refining industry catalytic cracking is produced.
The specific embodiment
Because content of beary metal increases in the raw material, make catalyst activity reduction, when catalyst activity drops to can not satisfy the catalytic cracking production requirement time, satisfy the activity of such catalysts requirement in order to guarantee content of beary metal and distribution on the catalyst, need draw off a certain amount of catalyst, and add new adjusting catalyst, improve activity of such catalysts and content of beary metal.
Regeneration of spent catalyst of the present invention is used acid regulator, used acid is inorganic aqueous acid or pressed powder, used acid is sulfuric acid, hydrochloric acid, nitric acid or phosphoric acid, makes dead catalyst pH value less than 5 after adding acid, and its sour addition is determined according to activity of such catalysts and content of beary metal test.
Its method is:
1, the dead catalyst that draws off is placed in the container, sampling is reacted with acid regulator then, after reacting completely, measure activity of such catalysts, course of reaction needs the consumption of acid regulator per sample, calculate, the concentration of the consumption of the used acid regulator of dead catalyst regenerative response and acid is measured and the processing parameters of concentration as a large amount of processing dead catalyst with this.
2, with the consumption of the acid regulator of sample test and working concentration as foundation, add the acid regulator of quantitative concentrations in the quantitative dead catalyst in container, under the natural temperature condition, stirred 1 hour, become regenerated catalyst.
Prepared regenerated catalyst mixes with primary catalyst by proportion, uses as the refining catalytic Cracking catalyst.
More than 500 ton of industrial production application shows that regenerated catalyst can reach the specification requirement of catalytic cracking fully through enterprises such as overtesting and Ning Lu petrochemical industry.Thereby, reduce the discharging of dead catalyst, prevent contaminated environment, reduce production costs significantly simultaneously.
Claims (1)
1, method for recycling waste oil-refining catalysts is characterized in that:
(1), the dead catalyst that draws off is placed in the container, sampling is reacted with acid regulator then, after reacting completely, measure activity of such catalysts, course of reaction needs the consumption of acid regulator per sample, calculate the consumption of the used acid regulator of dead catalyst regenerative response and the concentration of acid, measure and the processing parameters of concentration as a large amount of processing dead catalyst with this.
(2), with the consumption of the acid regulator of sample test and working concentration as foundation, add the acid regulator of quantitative concentrations in the quantitative dead catalyst in container, under the natural temperature condition, stirred 1 hour, become regenerated catalyst.
Described acid regulator uses inorganic aqueous acid or pressed powder, comprises sulfuric acid, hydrochloric acid, nitric acid or phosphoric acid, makes dead catalyst pH value less than 5 after adding acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910010741A CN101518746A (en) | 2009-03-19 | 2009-03-19 | Method for recycling waste oil-refining catalysts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910010741A CN101518746A (en) | 2009-03-19 | 2009-03-19 | Method for recycling waste oil-refining catalysts |
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| CN101518746A true CN101518746A (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910010741A Pending CN101518746A (en) | 2009-03-19 | 2009-03-19 | Method for recycling waste oil-refining catalysts |
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| CN (1) | CN101518746A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125872A (en) * | 2011-01-17 | 2011-07-20 | 湖南聚力催化剂股份有限公司 | Method for synthesizing porous microsphere material containing NaY zeolite by waste FCC (fluid catalytic cracking) catalyst |
| CN102441440A (en) * | 2010-10-13 | 2012-05-09 | 中国石油化工股份有限公司 | Method for preparing hydrotreating catalyst from waste catalyst |
-
2009
- 2009-03-19 CN CN200910010741A patent/CN101518746A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441440A (en) * | 2010-10-13 | 2012-05-09 | 中国石油化工股份有限公司 | Method for preparing hydrotreating catalyst from waste catalyst |
| CN102441440B (en) * | 2010-10-13 | 2014-05-21 | 中国石油化工股份有限公司 | Method for preparing hydrogenation catalyst from waste catalyst |
| CN102125872A (en) * | 2011-01-17 | 2011-07-20 | 湖南聚力催化剂股份有限公司 | Method for synthesizing porous microsphere material containing NaY zeolite by waste FCC (fluid catalytic cracking) catalyst |
| CN102125872B (en) * | 2011-01-17 | 2013-05-29 | 湖南聚力催化剂股份有限公司 | Method for synthesizing porous microsphere material containing NaY zeolite by waste FCC (fluid catalytic cracking) catalyst |
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Open date: 20090902 |