SU324814A1 - Method of dissociating ammonia - Google Patents

Method of dissociating ammonia Download PDF

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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
Application number
SU691384565A
Other languages
Russian (ru)
Inventor
Е.З. Голосман
В.С. Соболевский
В.П. Лыткин
Н.Н. Аксенов
А.И. Галкина
Я.А. Пекер
Д.И. Зинченко
С.И. Рузинский
Original Assignee
Golosman E Z
Sobolevskij V S
Lytkin V P
Aksenov N N
Galkina A I
Peker Ya A
Zinchenko D I
Ruzinskij S I
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Golosman E Z, Sobolevskij V S, Lytkin V P, Aksenov N N, Galkina A I, Peker Ya A, Zinchenko D I, Ruzinskij S I filed Critical Golosman E Z
Priority to SU691384565A priority Critical patent/SU324814A1/en
Application granted granted Critical
Publication of SU324814A1 publication Critical patent/SU324814A1/en

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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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  • Catalysts (AREA)

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)

СПОСОБ ДИССОЦИАЦИИ АММИАКА на катализаторе с получением водорода и азота, отличающийс я тем, что, с целью повышения степени диссоциации и улучшения состава газа, применяют катализатор, содержащий, Z: окись железа 77-49, окись алюминия 20-48, окись кальция 1,35-1,4, окись кремния 0,35-0,4, окись калия 0,5-0,6.METHOD FOR DISSOCIATION OF 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 containing Z: iron oxide 77-49, aluminum oxide 20-48, calcium oxide 1, 35-1.4, silicon oxide 0.35-0.4, potassium oxide 0.5-0.6. 1 3248141 324814
SU691384565A 1969-12-08 1969-12-08 Method of dissociating ammonia SU324814A1 (en)

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Application Number Priority Date Filing Date Title
SU691384565A SU324814A1 (en) 1969-12-08 1969-12-08 Method of dissociating ammonia

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Application Number Priority Date Filing Date Title
SU691384565A SU324814A1 (en) 1969-12-08 1969-12-08 Method of dissociating ammonia

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SU324814A1 true SU324814A1 (en) 1986-08-30

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Cited By (2)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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