CN105645457A - Method for producing silver nitrate and aluminum nitrate nonahydrate with waste silver catalyst - Google Patents
Method for producing silver nitrate and aluminum nitrate nonahydrate with waste silver catalyst Download PDFInfo
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- CN105645457A CN105645457A CN201410538246.4A CN201410538246A CN105645457A CN 105645457 A CN105645457 A CN 105645457A CN 201410538246 A CN201410538246 A CN 201410538246A CN 105645457 A CN105645457 A CN 105645457A
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Abstract
The invention relates to a method for producing silver nitrate and aluminum nitrate nonahydrate with a waste silver catalyst. The method comprises the following steps: the waste silver catalyst and a carrier residue thereof, and a nitric acid solution are subjected to a reaction in a corrosion-resisting reactor according to a pure mass ratio of 1: 0.47-1.08, based on pure substance silver, such that a mixed solution of silver nitrate and aluminum nitrate is produced; filtering is carried out, such that a small amount of impurity filter cake is obtained, and is burned or buried; a clear filtrate of silver nitrate and aluminum nitrate is subjected to further processing; the clear solution is subjected to reduced-pressure distillation in a reduced-pressure distiller; when a saturated solution is obtained by concentration, the solution is discharged, and is subjected to cooling, crystallization and separation; according to different solidifying points, silver nitrate and aluminum nitrate polyhydrate crystals are respectively precipitated; after conversion, if water amount is not enough, water can be refilled until the amount for nine crystal water can be reached; and washing and drying are carried out, such that silver nitrate and aluminum nitrate nonahydrate crystal products are obtained. According to the invention, silver nitrate and aluminum nitrate nonahydrate are produced with waste silver catalyst, such that waste is turned useful, and considerable economic benefit can be provided for enterprises.
Description
Technical field
The present invention relates to the technical field of comprehensive utilization of oil organic chemical industry's deep processing spent catalyst, particularly relate to a kind of method utilizing waste silver catalyst to produce Silver Nitrate and nine water aluminum nitrates.
Background technology
Oxidation of ethylene method be ethene and air or oxygen under the existence of silver catalyst, direct gaseous oxidation generates oxyethane, forms condensed fluid being absorbed by absorption tower use water. The ethene of non-oxidizing reaction continues reaction in pump around circuit to reactor, and cyclic absorption is until all form oxyethane liquid. Absorbing liquid obtains oxyethane finished product through desorb rectifying.
Link the most important in this oxidizing reaction plays catalyzed reaction with catalyzer silver exactly, and any material that is silver-colored and the inside of getting along well reacts, so the effect of catalyzer silver is irreplaceable. Occuping above-mentioned reason uses the cost of catalyzer silver to be very high, falls as waste discharge again after katalysis completes, not only uneconomical but also not environmentally. Therefore researching and developing catalyzer silver or other catalyzer, it is extremely important for making it to turn waste into wealth, timely, essential.
Oxidation of ethylene its quantity discharged of method silver catalyst to be discharged 0.0002 ton for producing every ton of product, is also exactly every ton and produces discharge 0.2 kilogram, and the inside also has alumina carrier mixing to be called for short alum clay. Wherein the content of catalyzer silver is 15%, and remaining is all aluminium sesquioxide. The present invention utilizes silver catalyst and carrier waste residue thereof to prepare Silver Nitrate and the method for nine water aluminum nitrates.
Summary of the invention
Technical problem to be solved by this invention is, silver catalyst and carrier waste residue thereof are processed, comprehensive utilization, prepare Silver Nitrate and the method for nine water aluminum nitrates, a kind of method utilizing waste silver catalyst to produce Silver Nitrate and nine water aluminum nitrates is provided, the method effectively make use of waste silver catalyst to prepare the valuable product such as Silver Nitrate and nine water aluminum nitrates, had both created economic worth, and had turn eliminated pollution.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method utilizing waste silver catalyst to produce Silver Nitrate and nine water aluminum nitrates, comprises the steps:
Waste silver catalyst and carrier waste residue thereof are reacted on corrosion-resistant reactor in salpeter solution with pure mass ratio 1: 0.47��1.08 with pure substance silver, start agitator, carry out chemical reaction, reaction generates the mixing solutions of Silver Nitrate and aluminum nitrate, and filtration obtains a small amount of impurity filter cake and sends to burning or bury;The Silver Nitrate and the aluminum nitrate filtrate that obtain clarification send to further processing;
The Silver Nitrate obtaining clarification by above-mentioned and aluminum nitrate mixing solutions are sent in underpressure distillation device and carry out underpressure distillation, when being condensed into saturated solution, eject crystallisation by cooling separation, what first the difference according to their zero pour precipitated out is Silver Nitrate, evaporate nine the crystallization water yields reaching aluminum nitrate afterwards according to conversion and just precipitate out nine water aluminum nitrate crystal, if the amount that nine crystal water can be filled to through conversion water yield deficiency, then obtain Silver Nitrate and nine water aluminum nitrate crystal products through washing, drying.
The main chemical reactions equation of the present invention is as follows:
3Ag+4HNO3=3AgNO3+2H2O+NO
Al2O3+6HNO3=2Al (NO3)3��9H2O+3H2O
The invention has the beneficial effects as follows: it is one years old, the present invention provides a kind of a kind of method utilizing waste silver catalyst to produce Silver Nitrate and nine water aluminum nitrates, the method effectively make use of the material composition of silver catalyst and carrier waste residue thereof, silver catalyst and carrier waste residue thereof are processed, comprehensive utilization, prepares Silver Nitrate and nine water aluminum nitrates. Its two, Silver Nitrate and nine water aluminum nitrate purposes are wide, be the product that two kinds of economic worths are bigger, it is to increase the economic benefit of Processing Ag catalyzer and carrier waste residue thereof, create very big profit return. Its three, less investment, Silver Nitrate is prepared by Processing Ag catalyzer and carrier waste residue thereof and nine water aluminum nitrates particularly applicable, it suffices to say that open a Tiao Xin road. Its four, the purity height of preparation, quality is guaranteed. Its five, the method effectively avoids the secondary pollution of oil organic chemical industry deep processing enterprise, turns waste into wealth, finally become valuable Silver Nitrate and nine water aluminum nitrate products, create considerable economic benefit in primary emission.
Embodiment
Embodiment one, a kind of method utilizing waste silver catalyst to produce Silver Nitrate and nine water aluminum nitrates, comprises the steps:
Get that catalyzer silver content is 15%, aluminium sesquioxide content be 85% waste silver catalyst and 500 kilograms, carrier waste residue prepare Silver monobromide and six water aluminum bromides, waste silver catalyst and carrier waste residue thereof are reacted on corrosion-resistant reactor in salpeter solution with pure mass ratio 1: 0.58 with pure substance silver, start agitator, carry out chemical reaction, reacting the mixing solutions of the Silver Nitrate generating aluminum nitrate and 88 kilograms, filtration obtains a small amount of impurity filter cake and sends to burning or bury; The Silver Nitrate and the aluminum nitrate filtrate that obtain clarification send to further processing;
The Silver Nitrate obtaining clarification by above-mentioned and aluminum nitrate mixing solutions are sent in underpressure distillation device and carry out underpressure distillation, when being condensed into saturated solution, eject crystallisation by cooling separation, what first the difference according to their zero pour precipitated out is Silver Nitrate, evaporate nine the crystallization water yields reaching aluminum nitrate afterwards according to conversion and just precipitate out nine water aluminum nitrate crystal, if the amount that nine crystal water can be filled to through conversion water yield deficiency, then obtain Silver Nitrate and nine water aluminum nitrate crystal products through washing, drying.
Embodiment two, a kind of method utilizing waste silver catalyst to produce Silver Nitrate and nine water aluminum nitrates, comprises the steps:
Get that catalyzer silver content is 15%, aluminium sesquioxide content be 85% waste silver catalyst and 500 kilograms, carrier waste residue prepare Silver monobromide and six water aluminum bromides, waste silver catalyst and carrier waste residue thereof are reacted on corrosion-resistant reactor in salpeter solution with pure mass ratio 1: 0.78 with pure substance silver, start agitator, carry out chemical reaction, reacting the mixing solutions of the Silver Nitrate generating aluminum nitrate and 118 kilograms, filtration obtains a small amount of impurity filter cake and sends to burning or bury;The Silver Nitrate and the aluminum nitrate filtrate that obtain clarification send to further processing;
The Silver Nitrate obtaining clarification by above-mentioned and aluminum nitrate mixing solutions are sent in underpressure distillation device and carry out underpressure distillation, when being condensed into saturated solution, eject crystallisation by cooling separation, what first the difference according to their zero pour precipitated out is Silver Nitrate, evaporate nine the crystallization water yields reaching aluminum nitrate afterwards according to conversion and just precipitate out nine water aluminum nitrate crystal, if the amount that nine crystal water can be filled to through conversion water yield deficiency, then obtain Silver Nitrate and nine water aluminum nitrate crystal products through washing, drying.
Embodiment three, a kind of method utilizing waste silver catalyst to produce Silver Nitrate and nine water aluminum nitrates, comprises the steps:
Get that catalyzer silver content is 15%, aluminium sesquioxide content be 85% waste silver catalyst and 500 kilograms, carrier waste residue prepare Silver monobromide and six water aluminum bromides, waste silver catalyst and carrier waste residue thereof are reacted on corrosion-resistant reactor in salpeter solution with pure mass ratio 1: 0.98 with pure substance silver, start agitator, carry out chemical reaction, reacting the mixing solutions of the Silver Nitrate generating aluminum nitrate and 148.9 kilograms, filtration obtains a small amount of impurity filter cake and sends to burning or bury; The Silver Nitrate and the aluminum nitrate filtrate that obtain clarification send to further processing;
The Silver Nitrate obtaining clarification by above-mentioned and aluminum nitrate mixing solutions are sent in underpressure distillation device and carry out underpressure distillation, when being condensed into saturated solution, eject crystallisation by cooling separation, what first the difference according to their zero pour precipitated out is Silver Nitrate, evaporate nine the crystallization water yields reaching aluminum nitrate afterwards according to conversion and just precipitate out nine water aluminum nitrate crystal, if the amount that nine crystal water can be filled to through conversion water yield deficiency, then obtain Silver Nitrate and nine water aluminum nitrate crystal products through washing, drying.
The above is only three preferred embodiments of the present invention, is not used for limiting the present invention, and its similar embodiments all, all should be covered by the protection domain of patent of the present invention.
Claims (1)
1. one kind utilizes the method for waste silver catalyst production Silver Nitrate and nine water aluminum nitrates, it is characterized in that comprising the steps: to react on corrosion-resistant reactor in salpeter solution with pure mass ratio 1: 0.47��1.08 with pure substance silver by waste silver catalyst and carrier waste residue thereof, start agitator, carry out chemical reaction, reaction generates the mixing solutions of Silver Nitrate and aluminum nitrate, and filtration obtains a small amount of impurity filter cake and sends to burning or bury; The Silver Nitrate and the aluminum nitrate filtrate that obtain clarification send to further processing; The Silver Nitrate obtaining clarification by above-mentioned and aluminum nitrate mixing solutions are sent in underpressure distillation device and carry out underpressure distillation, when being condensed into saturated solution, eject crystallisation by cooling separation, difference according to their zero pour, what first precipitate out is Silver Nitrate, evaporate nine the crystallization water yields reaching aluminum nitrate afterwards according to conversion and just precipitate out nine water aluminum nitrate crystal, if the amount of nine crystal water can be filled to through conversion water yield deficiency, then obtain Silver Nitrate and nine water aluminum nitrate crystal products through washing, drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538246.4A CN105645457A (en) | 2014-09-24 | 2014-09-24 | Method for producing silver nitrate and aluminum nitrate nonahydrate with waste silver catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538246.4A CN105645457A (en) | 2014-09-24 | 2014-09-24 | Method for producing silver nitrate and aluminum nitrate nonahydrate with waste silver catalyst |
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| Publication Number | Publication Date |
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| CN105645457A true CN105645457A (en) | 2016-06-08 |
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| CN201410538246.4A Pending CN105645457A (en) | 2014-09-24 | 2014-09-24 | Method for producing silver nitrate and aluminum nitrate nonahydrate with waste silver catalyst |
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- 2014-09-24 CN CN201410538246.4A patent/CN105645457A/en active Pending
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Application publication date: 20160608 |
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| WD01 | Invention patent application deemed withdrawn after publication |