CN104649230A - Method for preparing sodium hydride powder - Google Patents
Method for preparing sodium hydride powder Download PDFInfo
- Publication number
- CN104649230A CN104649230A CN201510108603.8A CN201510108603A CN104649230A CN 104649230 A CN104649230 A CN 104649230A CN 201510108603 A CN201510108603 A CN 201510108603A CN 104649230 A CN104649230 A CN 104649230A
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- Prior art keywords
- sodium hydride
- hydrogen
- atomizer
- sodium
- production technology
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- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000012312 sodium hydride Substances 0.000 title claims abstract description 51
- 229910000104 sodium hydride Inorganic materials 0.000 title claims abstract description 51
- 239000000843 powder Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000001257 hydrogen Substances 0.000 claims abstract description 44
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000010792 warming Methods 0.000 claims description 10
- 238000000889 atomisation Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 238000005984 hydrogenation reaction Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003960 organic solvent Substances 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 4
- 229910052708 sodium Inorganic materials 0.000 abstract 4
- 239000011734 sodium Substances 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 description 3
- 239000012279 sodium borohydride Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a method for preparing sodium hydride powder. The method for preparing the sodium hydride powder comprises the following steps: (1) heating hydrogen with the purity higher than 99.9% to 200-350 DEG C; (2) melting metallic sodium, and filtering to remove insoluble impurities, and heating to 150-350 DEG C; (3) introducing molten metallic sodium and hydrogen into an atomizer, wherein the atomizer is arranged at the upper part of a closed reactor, hydrogen is respectively introduced into an inner channel and an outer channel of the atomizer, the molten metallic sodium is introduced into an intermediate channel of the atomizer; and (4) carrying out quick reaction on hydrogen and atomized metallic sodium fogdrops in an external space of a nozzle of the atomizer to generate sodium hydride powder. The method for preparing the sodium hydride powder has the beneficial effects that firstly the problem that sodium hydride is polluted by an organic solvent in the traditional technique is solved, the purity of sodium hydride prepared by adopting the method provided by the invention can reach up to 98% or more, and no organic matter is contained; and secondly, the grain size of the sodium hydride powder is small and can reach up to 30-50 microns.
Description
Technical field
The invention belongs to Inorganic synthese technical field, relate to a kind of raw powder's production technology, be specifically related to a kind of sodium hydride raw powder's production technology.
Background technology
Sodium hydride is a kind of widely used reductive agent, and common commerical prod is dispersed in (normally kerosene or paraffin) in inert solvent with 25% ~ 50% ratio, also can obtain the product of sodium hydride content 65% through press filtration.This product owing to affecting the application in downstream containing organic solvent, especially when to derived product require higher.In addition, the sodium hydride granularity that this method obtains is comparatively large, active poor.
Chinese patent application (application number: the preparation and the purification process that 02814666.2) disclose a kind of sodium hydride, wherein describe a kind of preparation method of sodium hydride, the sodium hydride granularity that the method obtains less than 20 microns.This method introduces organism in preparation process, in reaction process with metal hydroxidess such as sodium hydroxide for solvent, comprise the impurity such as sodium carbonate unavoidably in therefore obtained sodium hydride.
Summary of the invention
Goal of the invention: the present invention is directed to above-mentioned prior art Problems existing and make improvement, namely the invention discloses a kind of sodium hydride raw powder's production technology.
Technical scheme: a kind of sodium hydride raw powder's production technology, comprises the following steps:
(1), by purity higher than 99.9% hydrogen be warming up to 200 ~ 350 DEG C;
(2), sodium Metal 99.5 melt filteration removed infusibility impurity and be warming up to 150 ~ 350 DEG C;
(3), by sodium Metal 99.5 melt, hydrogen pass into atomizer, atomizer is located at the top of airtight reactor simultaneously, and hydrogen passes into interior passageway and the exterior passage way of atomizer, and sodium Metal 99.5 melt passes into the center-aisle of atomizer;
(4), at the space outerpace of the spout of atomizer, the sodium Metal 99.5 droplet rapid reaction of hydrogen and atomization generates sodium hydride powder.
A kind of preferred version as sodium hydride raw powder's production technology a kind of in the present invention: unreacted hydrogen can again use as raw material after removing sodium hydride by the cyclonic separator of inside reactor after hydrogen gas compressor compression.
A kind of preferred version as sodium hydride raw powder's production technology a kind of in the present invention: adopt metal sintered filter to filter in step (2), the aperture of the filter pore of metal sintered filter is 0.1 micron.
A kind of preferred version as sodium hydride raw powder's production technology a kind of in the present invention: the molar flow entering the hydrogen of shower nozzle in step (3) is 50 ~ 100 times of the molar flow of the sodium Metal 99.5 melt entering shower nozzle.
A kind of preferred version as sodium hydride raw powder's production technology a kind of in the present invention: enter the mol ratio of the hydrogen of interior passageway and the hydrogen of exterior passage way in step (3) for (1 ~ 2): (2 ~ 1).
A kind of preferred version as sodium hydride raw powder's production technology a kind of in the present invention: atomizer is the outer hybrid shower nozzle of triple channel fluid.
Beneficial effect: a kind of sodium hydride raw powder's production technology disclosed by the invention has following beneficial effect:
1, solve sodium hydride in traditional technology and be subject to a difficult problem for organic solvent pollution, the purity of the sodium hydride adopting the present invention to prepare can reach more than 98%, and not containing any organism.
2, the particle diameter of sodium hydride powder is little, can reach 30 ~ 50 microns.
Accompanying drawing explanation
Fig. 1 is the structural representation of atomizer;
Fig. 2 is the schematic flow sheet of a kind of sodium hydride raw powder's production technology disclosed by the invention;
Wherein:
10-exterior passage way 20-center-aisle
30-interior passageway
Embodiment:
Below the specific embodiment of the present invention is described in detail.
Specific embodiment 1
As shown in Figure 2, a kind of sodium hydride raw powder's production technology, comprises the following steps:
(1), by purity higher than 99.9% hydrogen be warming up to 200 DEG C;
(2), sodium Metal 99.5 melt filteration removed infusibility impurity and be warming up to 350 DEG C;
(3), by sodium Metal 99.5 melt, hydrogen pass into atomizer, atomizer is located at the top of airtight reactor simultaneously, and hydrogen passes into interior passageway 30 and the exterior passage way 10 of atomizer, and sodium Metal 99.5 melt passes into the center-aisle 20 of atomizer;
(4), at the space outerpace of the spout of atomizer, the sodium Metal 99.5 droplet rapid reaction of hydrogen and atomization generates sodium hydride powder.Collecting reaction product is analyzed, and product is the sodium hydride powder of 99.2%, and median size is 50 microns.
In the present embodiment, unreacted hydrogen can again use as raw material after removing sodium hydride by the cyclonic separator of inside reactor after hydrogen gas compressor compression.
In the present embodiment, adopt metal sintered filter to filter in step (2), the aperture of the filter pore of metal sintered filter is 0.1 micron.
In the present embodiment, the molar flow entering the hydrogen of shower nozzle in step (3) is 50 times of the molar flow of the sodium Metal 99.5 melt entering shower nozzle.Reaction can be made like this to carry out thoroughly and Sodium Borohydride powder can be separated by cyclonic separator efficiently from air-flow.
In the present embodiment, the mol ratio entering the hydrogen of interior passageway 30 and the hydrogen of exterior passage way 10 in step (3) is 1:2.Reaction can be made like this to carry out thoroughly.
In the present embodiment, atomizer is the outer hybrid shower nozzle (as shown in Figure 1) of triple channel fluid.
Specific embodiment 2
A kind of sodium hydride raw powder's production technology, comprises the following steps:
(1), by purity higher than 99.9% hydrogen be warming up to 350 DEG C;
(2), sodium Metal 99.5 melt filteration removed infusibility impurity and be warming up to 150 DEG C;
(3), by sodium Metal 99.5 melt, hydrogen pass into atomizer, atomizer is located at the top of airtight reactor simultaneously, and hydrogen passes into interior passageway 30 and the exterior passage way 10 of atomizer, and sodium Metal 99.5 melt passes into the center-aisle 20 of atomizer;
(4), at the space outerpace of the spout of atomizer, the sodium Metal 99.5 droplet rapid reaction of hydrogen and atomization generates sodium hydride powder.Collecting reaction product is analyzed, and product is the sodium hydride powder of 99.6%, and median size is 33 microns.
In the present embodiment, unreacted hydrogen can again use as raw material after removing sodium hydride by the cyclonic separator of inside reactor after hydrogen gas compressor compression.
In the present embodiment, adopt metal sintered filter to filter in step (2), the aperture of the filter pore of metal sintered filter is 0.1 micron.
In the present embodiment, the molar flow entering the hydrogen of shower nozzle in step (3) is 100 times of the molar flow of the sodium Metal 99.5 melt entering shower nozzle.Reaction can be made like this to carry out thoroughly and Sodium Borohydride powder can be separated by cyclonic separator efficiently from air-flow.
In the present embodiment, the mol ratio entering the hydrogen of interior passageway 30 and the hydrogen of exterior passage way 10 in step (3) is 1:1.
In the present embodiment, atomizer is the outer hybrid shower nozzle of triple channel fluid.
Specific embodiment 3
A kind of sodium hydride raw powder's production technology, comprises the following steps:
(1), by purity higher than 99.9% hydrogen be warming up to 300 DEG C;
(2), sodium Metal 99.5 melt filteration removed infusibility impurity and be warming up to 300 DEG C;
(3), by sodium Metal 99.5 melt, hydrogen pass into atomizer, atomizer is located at the top of airtight reactor simultaneously, and hydrogen passes into interior passageway 30 and the exterior passage way 10 of atomizer respectively, and sodium Metal 99.5 melt passes into the center-aisle 20 of atomizer;
(4), at the space outerpace of the spout of atomizer, the sodium Metal 99.5 droplet rapid reaction of hydrogen and atomization generates sodium hydride powder.Collecting reaction product is analyzed, and product is the sodium hydride powder of 99.5%, and median size is 45 microns.
In the present embodiment, unreacted hydrogen can again use as raw material after removing sodium hydride by the cyclonic separator of inside reactor after hydrogen gas compressor compression.
In the present embodiment, adopt metal sintered filter to filter in step (2), the aperture of the filter pore of metal sintered filter is 0.1 micron.
In the present embodiment, the molar flow entering the hydrogen of shower nozzle in step (3) is 70 times of the molar flow of the sodium Metal 99.5 melt entering shower nozzle.Reaction can be made like this to carry out thoroughly and Sodium Borohydride powder can be separated by cyclonic separator efficiently from air-flow.
In the present embodiment, the mol ratio entering the hydrogen of interior passageway 30 and the hydrogen of exterior passage way 10 in step (3) is 2:1.
In the present embodiment, atomizer is the outer hybrid shower nozzle of triple channel fluid.
Above embodiments of the present invention are elaborated.But the present invention is not limited to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, can also make a variety of changes under the prerequisite not departing from present inventive concept.
Claims (6)
1. a sodium hydride raw powder's production technology, is characterized in that, comprises the following steps:
(1), by purity higher than 99.9% hydrogen be warming up to 200 ~ 350 DEG C;
(2), sodium Metal 99.5 melt filteration removed infusibility impurity and be warming up to 150 ~ 350 DEG C;
(3), by sodium Metal 99.5 melt, hydrogen pass into atomizer, atomizer is located at the top of airtight reactor simultaneously, and hydrogen passes into interior passageway and the exterior passage way of atomizer, and sodium Metal 99.5 melt passes into the center-aisle of atomizer;
(4), at the space outerpace of the spout of atomizer, the sodium Metal 99.5 droplet rapid reaction of hydrogen and atomization generates sodium hydride powder.
2. a kind of sodium hydride raw powder's production technology as claimed in claim 1, is characterized in that, unreacted hydrogen can again use as raw material after removing sodium hydride by the cyclonic separator of inside reactor after hydrogen gas compressor compression.
3. a kind of sodium hydride raw powder's production technology as claimed in claim 1, is characterized in that, adopt metal sintered filter to filter in step (2), the aperture of the filter pore of metal sintered filter is 0.1 micron.
4. a kind of sodium hydride raw powder's production technology as claimed in claim 1, is characterized in that, the molar flow entering the hydrogen of shower nozzle in step (3) is 50 ~ 100 times of the molar flow of the sodium Metal 99.5 melt entering shower nozzle.
5. a kind of sodium hydride raw powder's production technology as claimed in claim 1, is characterized in that, enters the mol ratio of the hydrogen of interior passageway and the hydrogen of exterior passage way for (1 ~ 2): (2 ~ 1) in step (3).
6. a kind of sodium hydride raw powder's production technology as claimed in claim 1, is characterized in that, atomizer is the outer hybrid shower nozzle of triple channel fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108603.8A CN104649230B (en) | 2015-03-12 | 2015-03-12 | A kind of sodium hydride raw powder's production technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510108603.8A CN104649230B (en) | 2015-03-12 | 2015-03-12 | A kind of sodium hydride raw powder's production technology |
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| CN104649230A true CN104649230A (en) | 2015-05-27 |
| CN104649230B CN104649230B (en) | 2016-11-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961098A (en) * | 2015-06-15 | 2015-10-07 | 车荣睿 | Preparation method of sodium hydride |
| WO2019095627A1 (en) * | 2017-11-16 | 2019-05-23 | 上海镁源动力科技有限公司 | Integrated device for preparing magnesium hydride powder and method for preparing magnesium hydride powder |
| CN110862068A (en) * | 2018-08-28 | 2020-03-06 | 宁夏佰斯特医药化工有限公司 | New process for producing sodium hydride |
| CN110862102A (en) * | 2018-08-28 | 2020-03-06 | 宁夏佰斯特医药化工有限公司 | Novel process for producing magnesium sulfate |
| US11813675B2 (en) | 2017-11-16 | 2023-11-14 | Shanghai Mg Power Technology Co., Ltd | Integrated device for preparing magnesium hydride powder and method for preparing magnesium hydride powder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2021567A (en) * | 1931-11-06 | 1935-11-19 | Du Pont | Catalyst and process of hydrogenating organic compounds |
| US3222288A (en) * | 1960-12-12 | 1965-12-07 | Nat Distillers Chem Corp | Process for preparing sodium hydride |
| US3535078A (en) * | 1967-03-29 | 1970-10-20 | Ceskoslovenska Akademie Ved | Process for the production of sodium hydride |
| CN1876289A (en) * | 2006-07-12 | 2006-12-13 | 华东理工大学 | Method for preparing antimony doped stannic oxide nanometer electricity-conductive powder |
-
2015
- 2015-03-12 CN CN201510108603.8A patent/CN104649230B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2021567A (en) * | 1931-11-06 | 1935-11-19 | Du Pont | Catalyst and process of hydrogenating organic compounds |
| US3222288A (en) * | 1960-12-12 | 1965-12-07 | Nat Distillers Chem Corp | Process for preparing sodium hydride |
| US3535078A (en) * | 1967-03-29 | 1970-10-20 | Ceskoslovenska Akademie Ved | Process for the production of sodium hydride |
| CN1876289A (en) * | 2006-07-12 | 2006-12-13 | 华东理工大学 | Method for preparing antimony doped stannic oxide nanometer electricity-conductive powder |
Non-Patent Citations (3)
| Title |
|---|
| 侯殿保等: "氢化钠的合成、性质及应用", 《盐湖研究》 * |
| 唐宏青主编: "《现代煤化工新技术》", 30 November 2009, 化学工业出版社 * |
| 龚毅生，申泮文译: "《无机合成》", 31 December 1963, 科学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961098A (en) * | 2015-06-15 | 2015-10-07 | 车荣睿 | Preparation method of sodium hydride |
| WO2019095627A1 (en) * | 2017-11-16 | 2019-05-23 | 上海镁源动力科技有限公司 | Integrated device for preparing magnesium hydride powder and method for preparing magnesium hydride powder |
| US11813675B2 (en) | 2017-11-16 | 2023-11-14 | Shanghai Mg Power Technology Co., Ltd | Integrated device for preparing magnesium hydride powder and method for preparing magnesium hydride powder |
| CN110862068A (en) * | 2018-08-28 | 2020-03-06 | 宁夏佰斯特医药化工有限公司 | New process for producing sodium hydride |
| CN110862102A (en) * | 2018-08-28 | 2020-03-06 | 宁夏佰斯特医药化工有限公司 | Novel process for producing magnesium sulfate |
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| Publication number | Publication date |
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| CN104649230B (en) | 2016-11-23 |
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Effective date of registration: 20191129 Address after: 753600 Riverside Industrial District, Shizuishan, the Ningxia Hui Autonomous Region Patentee after: NINGXIA SHENGLAN CHEMICAL ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 315211 Zhejiang Province, Ningbo Jiangbei District Fenghua Road No. 818 Patentee before: Ningbo University |
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Denomination of invention: A preparation method of sodium hydride powder Effective date of registration: 20230330 Granted publication date: 20161123 Pledgee: Industrial Bank Co.,Ltd. Yinchuan Branch Pledgor: NINGXIA SHENGLAN CHEMICAL ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2023980036999 |
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Denomination of invention: A preparation method of sodium hydride powder Granted publication date: 20161123 Pledgee: Industrial Bank Co.,Ltd. Yinchuan Branch Pledgor: NINGXIA SHENGLAN CHEMICAL ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2024980010536 |
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