SU324814A1 - Method of dissociating ammonia - Google Patents
Method of dissociating ammonia Download PDFInfo
- Publication number
- SU324814A1 SU324814A1 SU691384565A SU1384565A SU324814A1 SU 324814 A1 SU324814 A1 SU 324814A1 SU 691384565 A SU691384565 A SU 691384565A SU 1384565 A SU1384565 A SU 1384565A SU 324814 A1 SU324814 A1 SU 324814A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- oxide
- catalyst
- dissociation
- ammonia
- composition
- Prior art date
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
СПОСОБ ДИССОЦИАЦИИ АММИАКА на катализаторе с получением водорода и азота, отличающий- с тем, что, с целью повышени степени диссоциации и улучшени состава газа, примен ют катализатор, содержащий, 7,: окись железа 77-49, окись алюмини 20-48, окись кальци 1,35-1,4, окись кремни 0,35-0,4, окись кали 0,5-0,6.A method of dissociating ammonia on a catalyst to produce hydrogen and nitrogen, characterized in that, in order to increase the degree of dissociation and improve the composition of the gas, a catalyst is used that contains, 7, iron oxide 77-49, aluminum oxide 20-48, oxide calcium 1.35-1.4, silicon oxide 0.35-0.4, potassium oxide 0.5-0.6.
Description
(Л С. Изобретение относитс к получению защитного газа при диссоциации аммиака. Известен спосоС5 диссоциации аммиака на катализаторе, содержащем железо, никель и магний, нанесенны на окись алюмини , При объемной скорости процесса А05 и темпера туре остаточное содержание аммиака составл ет 0,4%, т.е. степень диссоциации 99,2%. Недостатками указанного способа вл ютс низка степень диссоциаци низка объемна скорость процесса и большое, содержание остаточного аммиака в газе. Дл повьппени степени диссоциации и улучшени состава газа предлагаетс примен ть катализатор (КДА-1А), содержащий, %: Окись железа 77-49, Окись алюмини 20-48 Окись кальци 1,35-1,4 Окись кремни 0,35-0,4 Окись кали 0,5-0,6 Содержание остаточного аммиака при температуре 850С при расходе 30-100 м/ч диссоциированного аммиака 0,018-0,037%. 41 Пример. Смесь магнетита, окиси кальци , окиси кремни и окиси кали , вз тых в указанных соотношени х , загружают в шаровую мельницу и подвергают тщательному перемешиванию . Приготовленную шихту помещают в печь сопротивлени между, водоохлаждаемыми металлическими электродами . На электроды подаетс напр жение пор дка 30-60 Вт при силе тока 400-600 А. Плавку продолжают в течение 20-30 мин. Полученную массу охлаждают, дроб т, смешивают с 10-16% окиси алюмини и вновь плав т в печи сопротивлени при тех же параметрах. В зависимости от заданного состава катализатора производитс двухили трехкратное введение окиси алюмини с целью лучшего распределени железа и кромоторов в катализаторе. . Содержание остаточного аммиака 0,017-0,018%, что улучшает состав защитного газа. Высока активность катализатора не снижаетс при объемной скорости 1500 и более. Результаты лабораторных исхтытаний следующие (объемна скорость 1000Р 0,3 ати):(L C. The invention relates to the production of a protective gas in the dissociation of ammonia. The known method is the dissociation of ammonia on a catalyst containing iron, nickel and magnesium deposited on alumina. At a volumetric rate of the A05 process and at a temperature the residual ammonia content is 0.4% i.e., the dissociation degree is 99.2%. The disadvantages of this method are low degree of dissociation, low volumetric rate of the process and high residual ammonia content in the gas. To increase the degree of dissociation and improve the composition of the gas A catalyst (KDA-1A) containing,%: Ferric oxide 77-49, Alumina 20-48 Calcium oxide 1.35-1.4 Silicon oxide 0.35-0.4 Potassium oxide 0.5-0 , 6 The content of residual ammonia at a temperature of 850 ° C at a flow rate of 30-100 m / h dissociated ammonia is 0.018-0.037%. 41 Example: A mixture of magnetite, calcium oxide, silica and potassium oxide, taken in the indicated ratios, is loaded into a ball mill and subjected to thorough mixing. The prepared mixture is placed in a resistance furnace between water-cooled metal electrodes. A voltage of about 30-60 W is applied to the electrodes at a current of 400-600 A. Melting is continued for 20-30 minutes. The resulting mass is cooled, crushed, mixed with 10-16% alumina and again melted in a resistance furnace with the same parameters. Depending on the composition of the catalyst, a two or threefold introduction of alumina is carried out in order to better distribute the iron and the edge of the catalyst. . The content of residual ammonia is 0,017-0,018%, which improves the composition of the protective gas. High catalyst activity does not decrease with a space velocity of 1500 or more. The results of laboratory tests are as follows (volumetric speed of 1000P 0.3 ati):
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU691384565A SU324814A1 (en) | 1969-12-08 | 1969-12-08 | Method of dissociating ammonia |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU691384565A SU324814A1 (en) | 1969-12-08 | 1969-12-08 | Method of dissociating ammonia |
Publications (1)
Publication Number | Publication Date |
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SU324814A1 true SU324814A1 (en) | 1986-08-30 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU691384565A SU324814A1 (en) | 1969-12-08 | 1969-12-08 | Method of dissociating ammonia |
Country Status (1)
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SU (1) | SU324814A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1034066C (en) * | 1992-11-19 | 1997-02-19 | 化学工业部上海化工研究院 | Method for preparation of low pressure high pure hydrogen nitrogen mixed gas |
WO1998046063A3 (en) * | 1997-03-17 | 1999-09-10 | Allied Signal Inc | System and method for disposal of hydrazine propellants and other energetic materials |
-
1969
- 1969-12-08 SU SU691384565A patent/SU324814A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1034066C (en) * | 1992-11-19 | 1997-02-19 | 化学工业部上海化工研究院 | Method for preparation of low pressure high pure hydrogen nitrogen mixed gas |
WO1998046063A3 (en) * | 1997-03-17 | 1999-09-10 | Allied Signal Inc | System and method for disposal of hydrazine propellants and other energetic materials |
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