SU132626A1 - The method of preparation of protective gas - Google Patents

The method of preparation of protective gas

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Publication number
SU132626A1
SU132626A1 SU651694A SU651694A SU132626A1 SU 132626 A1 SU132626 A1 SU 132626A1 SU 651694 A SU651694 A SU 651694A SU 651694 A SU651694 A SU 651694A SU 132626 A1 SU132626 A1 SU 132626A1
Authority
SU
USSR - Soviet Union
Prior art keywords
protective gas
ammonia
preparation
catalyst
nitrogen
Prior art date
Application number
SU651694A
Other languages
Russian (ru)
Inventor
Б.М. Эстрин
Original Assignee
Б.М. Эстрин
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.)
Filing date
Publication date
Application filed by Б.М. Эстрин filed Critical Б.М. Эстрин
Priority to SU651694A priority Critical patent/SU132626A1/en
Application granted granted Critical
Publication of SU132626A1 publication Critical patent/SU132626A1/en

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Description

Известно, что дл  приготовлени  защитного газа из аммиака примен етс  специальный диссоциатор, в котором поддерживаетс  высока  температура.It is known that a special dissociator is used to prepare the protective gas from ammonia, in which a high temperature is maintained.

Предлагаемый способ отличаетс  отсутствием специального диссоциатора и применением нового катализатора, с помощью которого осуществл етс  окисление аммиака, или каталитическое сжигание аммиака в смеси с воздухом, с большим выходом молекул рного азота. Кроме того, предлагаемый способ не требует подвода тепла извне, что уменьшает эксплуатационные расходы.The proposed method is characterized by the absence of a special dissociator and the use of a new catalyst, by means of which ammonia is oxidized, or catalytic combustion of ammonia mixed with air, with a high yield of molecular nitrogen. In addition, the proposed method does not require the supply of heat from the outside, which reduces operating costs.

В основу способа положен процесс каталитического окислени  на специально разработанном дл  этой цели никелево-кобальтовом катализаторе , промотированном окисью хрома. Носителем служит активна  окись алюмини  а-модификации.The method is based on a catalytic oxidation process on a chromium oxide promoted nickel-cobalt catalyst specially developed for this purpose. The carrier is active alumina a-modification.

Суммарное содержание никел  и кобальта составл ет 3 г на 100 сн катализатора. Содержание промотора Сг2Оз - 1,5 г на 100 см катализатора .The total content of nickel and cobalt is 3 g per 100 cn of the catalyst. The content of the Cr2Oz promoter is 1.5 g per 100 cm of catalyst.

Процесс получени  защитного газа проводитс  в реакторе, представл ющем собою стальной цилиндр с головкой, футерованньп изнутри огнеупорным бетоном.The process of obtaining protective gas is carried out in a reactor, which is a steel cylinder with a head, which is lined from the inside with refractory concrete.

Получение защитного газа проводитс  в три стадии. На первой стадии аммиачно-воздущна  смесь с избыточным количеством аммиака подвергаетс  в головке реактора процессу каталитического окислени  Продукты окислени , состо щие из азота, паров воды и непрореагировавщего аммиака, поступают в .основной объем реактора, где при температуре 700-850° осуществл етс  втора  стади  процесса-глубока  диссоциаци  остаточного аммиака, при этом подвод тепла извне не требуетс .The generation of protective gas is carried out in three stages. In the first stage, an ammonia-air mixture with an excess of ammonia is subjected in the reactor head to a catalytic oxidation process. Oxidation products, consisting of nitrogen, water vapor and unreacted ammonia, enter the main volume of the reactor, where the second stage is at 700-850 ° C. process — deep dissociation of residual ammonia — without the need for external heat supply.

№ 132626- 2 Треть  стади  процесса заключаетс  в гидрогенизации окисле в азота,  вл ющихс  побочными продуктами при диссоциации. Заключительным этаном получени  защитного газа  вл етс  осушка продуктов реакции.No. 132626-2. The third stage of the process is the hydrogenation of the oxide to nitrogen, which are by-products during dissociation. The final ethane of production of the protective gas is the drying of the reaction products.

Предмет изобретени Subject invention

Способ приготовлени  защитного газа, состо щего из азота и водорода , дл  безокислительного нагрева стали, с использованием в качестве сырь  аммиака, отличающийс  тем, что, с целью уменьщени  расхода электроэнергии, примен ют процесс окислени  аммиака воздухом на никелево-кобальтовом катализаторе, промотированном окисью хрома.A method of preparing a protective gas consisting of nitrogen and hydrogen for non-oxidative heating of steel using ammonia as a raw material, characterized in that, in order to reduce power consumption, the process of oxidizing ammonia with air on a nickel-cobalt catalyst promoted with chromium oxide is used .

SU651694A 1960-01-22 1960-01-22 The method of preparation of protective gas SU132626A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU651694A SU132626A1 (en) 1960-01-22 1960-01-22 The method of preparation of protective gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU651694A SU132626A1 (en) 1960-01-22 1960-01-22 The method of preparation of protective gas

Publications (1)

Publication Number Publication Date
SU132626A1 true SU132626A1 (en) 1960-11-30

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Family Applications (1)

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SU651694A SU132626A1 (en) 1960-01-22 1960-01-22 The method of preparation of protective gas

Country Status (1)

Country Link
SU (1) SU132626A1 (en)

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