CN1089044C - Prepn. of fast cooled Ni-Al alloy powder catalyst - Google Patents
Prepn. of fast cooled Ni-Al alloy powder catalyst Download PDFInfo
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- CN1089044C CN1089044C CN97117042A CN97117042A CN1089044C CN 1089044 C CN1089044 C CN 1089044C CN 97117042 A CN97117042 A CN 97117042A CN 97117042 A CN97117042 A CN 97117042A CN 1089044 C CN1089044 C CN 1089044C
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Abstract
The present invention provides the preparation of quenched Ni-Al alloy powder catalysts. Ni in alloys accounts for 30 to 55 wt%, and Al accounts for the rest. The present invention is characterized in that the Ni-Al alloy catalysts are prepared by an ultrasonic gas atomizing means, and the technological parameters comprise 1400 to 1500 DEG C of ejecting temperature, air as a gas source and 20 to 80 atm of gas pressure. In the present invention, the molten alloys are prepared to be powder in one step, and the quality of products is improved. Environmental pollution is avoided, the constituent range of framework nickel alloy catalysts and other alloy catalysts is widened, and new alloy catalysts can be developed. Since the air is used as the gas supply, the cost is greatly reduced.
Description
The present invention relates to Preparation of catalysts, a kind of advanced ultrasonic atomizatio technology that adopts is provided especially, prepare high performance chilling Ni-Al alloy powder caltalyst technology.
The Ni-Al alloy catalyst occupies very consequence in industrial catalyst, be widely used in industries such as petrochemical industry, chemical fibre, pharmacy, and consumption is big, purposes is wide.Prepare the Ni-Al alloy catalyst yet still continue to use traditional technology in the world at present, exist five to keep away end greatly:
(1) traditional handicraft prepares Ni-Al alloy catalyst employing smelting-ingot casting-fragmentation-ball milling-sieving technology, complex procedures.Smelt and ingot casting, the segregation that brings inevitable alloy catalyst composition and auxiliary agent can not be given full play to the effect of each constituent element.
(2) be subjected to have only in the traditional handicraft restriction through alloy pig " fragmentation " ability " ball milling becomes powder ", the research of Ni-Al alloy catalyst decades, its Ni-Al alloy composition can only be at Ni
50Al
50The narrow range of brittle alloy in gyrate (the toughness alloy is difficult to fragmentation and ball milling); So be difficult to expansion and select best composition.
(3) traditional handicraft adopts " fragmentation " and " ball milling ", also limited the use of inflammable, easy oxidation and active element auxiliary agent, thereby limited the further raising of alloy catalyst performance.
(4) by traditional handicraft, alloy be smelt and ingot casting after, still need " fragmentation " with " ball milling " two procedures, not only this " consuming time taking a lot of work ", and cause " environmental pollution ".
(5) " ball milling " of traditional handicraft employing is difficult to control " particle size range " of alloy catalyst, and passes through " selection by winnowing " or " sieving " afterwards, and very thin part powder can't use and reclaim again, causes waste and pollution.
As seen, the Ni-Al alloy catalyst of traditional handicraft preparation can not satisfy the growing needs of national economy far away, presses for the novel alloy catalyst of development and replaces.Prepare the chilling Ni-Al alloy powder caltalyst that band pulverizes again with fast quenching in the last few years report is arranged repeatly, the catalytic performance of chilling Ni-Al is much improved than traditional product, its production is far from breaking away from traditional mode, preparation cost improves greatly than conventional method, thereby can not put into production always.
The object of the present invention is to provide a kind of preparation of chilling Ni-Al alloy powder caltalyst, the composition wide ranges of its catalyst prod, catalytic performance significantly improves, and its production cycle shorten dramatically, production cost is low.
The invention provides a kind of preparation of chilling Ni-Al alloy powder caltalyst, the Ni in the alloy accounts for 30～55%wt, and the Al of surplus is characterized in that adopting the ultrasonic gas atomization means to prepare the Ni-Al alloy catalyst, and technological parameter is:
Injection temperation: 1400～1500 ℃;
Source of the gas: air;
Gas pressure: 20～80atm.
Also can add Cr, Fe, Ti, Co, Nb, Cu, Si, Pd, Pt and rare earth element among the Ni-Al and make auxiliary agent, addition is 0.01～1.5%wt.
Adopting the Ni-Al alloyed powder shape of the ultrasonic atomizatio means preparation ball-type that is as the criterion is comparatively desirable catalyst shape, and the catalyst performance of the identical composition of pulverizing again than quick quenching band has raising again.Generally speaking, the ultrasonic gas atomization method prepares alloy powder and adopts N more
2, Ar, He be as source of the gas, promptly uses gas-recycling plant also need regularly add N
2, Ar, He, production cost is very high.As everyone knows, adopt air as source of the gas, only needing to increase an air compressor gets final product, economical convenient, but the source of the gas of air as the reactive alloys powder may be set off an explosion owing to it, is forbidden in experience in the past, and the present invention has then overcome this technology prejudice, thereby production cost is significantly reduced, realized chilling Ni-Al alloy catalyst suitability for industrialized production.In a word, the alloy one of 1. fusion in the present invention goes on foot into powder, has improved product quality, and has avoided environmental pollution; 2. widen the composition scope of framing nickel type and other alloy catalysts, can develop and develop the alloy catalyst that makes new advances; 3. owing to adopt air as source of the gas, thereby cost significantly reduces.Below by embodiment in detail the present invention is described in detail.
Embodiment 1
Ni, Al packed in proportion heat in ultrasonic gas atomization equipment and the heating furnace, the melting injection temperation is 1450 ± 20 ℃, and expulsion pressure is 40～20atm, and preparing composition is Ni 47.5%wt, Al 52.5%wt alloy powder caltalyst, powder size between 10～80 μ m the person greater than 85%.Be used for the hydrogenating cyclobufene sultone reaction, the congruent Ni-Al catalyst that specific activity is produced than traditional handicraft improves 10%.
Embodiment 2
Interior heating is protected in pack in proportion ultrasonic gas atomization equipment and heating of Ni, Al, Cr, Fe, the melting injection temperation is 1480 ± 20 ℃, expulsion pressure is 60～40atm, preparing composition is Ni 49%wt, Al 49.5%wt, Cr 1.0%wt, Fe 0.5%wt, alloy powder caltalyst, powder size between 10～50 μ m the person greater than 80%.Be used for the adipic dinitrile hydrogenation reaction, the congruent Ni-Al catalyst that specific activity is produced than traditional handicraft improves 20%.
Embodiment 3
Interior heating is protected in packed in proportion information body atomization plant and heating of Ni, Al, the melting injection temperation is 1400 ± 20 ℃, and expulsion pressure is 50～30atm, and preparing composition is Ni 30%wt, Al70%wt alloy powder caltalyst, powder size between 10～80 μ m the person greater than 85%.Be used for the hydrogenating cyclobufene sultone reaction, the Ni 49 that specific activity is produced than traditional handicraft, Al 49.5, and Cr 1.0, and Fe 0.5 improves 25%.
Embodiment 4
Ni, Al, Ti packed in proportion heat in ultrasonic gas atomization equipment and the heating furnace, the melting injection temperation is 1480 ± 20 ℃, expulsion pressure is 70～50atm, preparing composition is Ni 49.7%wt, Al50%wt, Ti 0.3%wt, alloy powder caltalyst, powder size between 10～50 μ m the person greater than 80%.
Claims (2)
1. the preparation method of a chilling Ni-Al alloy powder caltalyst, the Ni in the alloy accounts for 30～55%wt, and the Al of surplus is characterized in that adopting the ultrasonic gas atomization means to prepare the Ni-Al alloy catalyst, and technological parameter is:
Injection temperation: 1400～1500 ℃;
Source of the gas: air;
Gas pressure: 20～80atm.
2. according to the preparation method of the described chilling Ni-Al of claim 1 alloy powder caltalyst, it is characterized in that: add Cr, Fe, Ti, Co, Nb, Cu, Si, Pd, Pt and rare earth element among the Ni-Al and make auxiliary agent, addition is 0.01～1.5%wt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97117042A CN1089044C (en) | 1997-10-05 | 1997-10-05 | Prepn. of fast cooled Ni-Al alloy powder catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97117042A CN1089044C (en) | 1997-10-05 | 1997-10-05 | Prepn. of fast cooled Ni-Al alloy powder catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1213595A CN1213595A (en) | 1999-04-14 |
| CN1089044C true CN1089044C (en) | 2002-08-14 |
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ID=5174298
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97117042A Expired - Fee Related CN1089044C (en) | 1997-10-05 | 1997-10-05 | Prepn. of fast cooled Ni-Al alloy powder catalyst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425377C (en) * | 2002-09-10 | 2008-10-15 | 昭荣化学工业株式会社 | Method for mfg. metal powder |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157800B (en) * | 2013-03-21 | 2014-09-24 | 中国航空工业集团公司北京航空材料研究院 | Collecting device of high-temperature alloy powder |
| CN106825602B (en) * | 2016-12-31 | 2019-04-02 | 东莞市华研新材料科技有限公司 | A kind of surface is coated with the preparation method of the nickel powder of aluminium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5090997A (en) * | 1990-01-19 | 1992-02-25 | Bayer Aktiengesellschaft | Process for producing powdered aluminum alloys |
| CN1060974A (en) * | 1990-10-29 | 1992-05-13 | 中国科学院金属研究所 | The preparation method of skeletal nickel catalyst |
-
1997
- 1997-10-05 CN CN97117042A patent/CN1089044C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5090997A (en) * | 1990-01-19 | 1992-02-25 | Bayer Aktiengesellschaft | Process for producing powdered aluminum alloys |
| CN1060974A (en) * | 1990-10-29 | 1992-05-13 | 中国科学院金属研究所 | The preparation method of skeletal nickel catalyst |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425377C (en) * | 2002-09-10 | 2008-10-15 | 昭荣化学工业株式会社 | Method for mfg. metal powder |
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| Publication number | Publication date |
|---|---|
| CN1213595A (en) | 1999-04-14 |
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