SU356872A1 - Method of reducing low temperature catalyst for carbon monoxide conversion - Google Patents
Method of reducing low temperature catalyst for carbon monoxide conversionInfo
- Publication number
- SU356872A1 SU356872A1 SU1493465A SU1493465A SU356872A1 SU 356872 A1 SU356872 A1 SU 356872A1 SU 1493465 A SU1493465 A SU 1493465A SU 1493465 A SU1493465 A SU 1493465A SU 356872 A1 SU356872 A1 SU 356872A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- carbon monoxide
- low temperature
- catalyst
- temperature catalyst
- monoxide conversion
- Prior art date
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- Catalysts (AREA)
Description
Изобретение относитс к способу восстановлени низкотемпературных катализаторов дл конверсии окиси углерода с вод ным паром и может быть использовано в химической промышленности , например в производстве синтетического аммиака и азотной кислоты.The invention relates to a process for the reduction of low temperature catalysts for the conversion of carbon monoxide with steam and can be used in the chemical industry, for example, in the production of synthetic ammonia and nitric acid.
Известен способ восстановленн свежеприготовленного цинкхроммедного катализатора дл конверсии окиси углерода с вод ным наром путем нагрева катализатора до 150- 190°С в токе азотоводородной смеси, содержащей 75% водорода, 25% азота с добавками двуокиси углерода с последующим переходом на технологический режим обработкой его парогазовой смесью с. содержанием окиси углерода до 20% при 260-270°С и при отношении пара к газу, равном 3-6.A known method is the reduction of a freshly prepared zinc-chromium-containing catalyst for the conversion of carbon monoxide with water nara by heating the catalyst to 150-190 ° C in a stream of a nitric mixture containing 75% of hydrogen, 25% of nitrogen with additives of carbon dioxide, and then switching to the process mode by treating it with a gas-vapor mixture with. carbon monoxide content up to 20% at 260-270 ° С and at a steam to gas ratio of 3-6.
Однако этот способ отличаетс невозможностью проведени восстановлени катализатора без значительного выделени тепла и частичной потери активности катализатора за счет спекани . Кроме того, способ активации ципкхроммедного катализатора требует специального приготовлени огромного количества азотводородной смеси с добавками 10- 30% СОг, а это неудобно в заводских услови х .However, this method is characterized by the impossibility of carrying out catalyst reduction without significant heat generation and partial loss of catalyst activity due to sintering. In addition, the method of activation of the zipkhrommedny catalyst requires special preparation of a huge amount of a nitrogen-hydrogen mixture with additives of 10–30% C02, and this is inconvenient under factory conditions.
и спекани предложенов качестве газа-восстановител использоватьсмесь следующего состава, вес.%:and sintering the quality of the reducing gas using a mixture of the following composition, wt.%:
Нг1-10Ng1-10
СО285-95CO285-95
СО1-2СО1-2
Na3-2Na3-2
СН4 1.CH4 1.
Температура восстановлени не превышает 200-210°С с последующим переходом на технологический режим. Перед восстановлением катализатор предварительно прокаливают при температуре не выше 350°С, а нагревают катализатор в токе инертного газа, например азота .The recovery temperature does not exceed 200-210 ° C with the subsequent transition to the process mode. Before reduction, the catalyst is preliminarily calcined at a temperature not higher than 350 ° C, and the catalyst is heated in a stream of inert gas, for example nitrogen.
Смесь вл етс промышленной газовой смесью технологической схемы синтеза аммиака (экспанзерный газ).The mixture is an industrial gas mixture of the technological scheme for the synthesis of ammonia (expansion gas).
Способ восстановлени обеспечивает получение катализатора высокой активности. Содержание сернистых соединений в газовой смеси, а также в азоте должно составл ть не менее 0,2 мг/нмThe reduction process provides a high activity catalyst. The content of sulfur compounds in the gas mixture, as well as in nitrogen should be at least 0.2 mg / nm
Предварительна прокалка катализатора при температуре не выше 350°С уменьшает тепловой эффект восстановлени катализатора и поэтому может быть рекомендована как желательна стади перед восстановлением катализатора.Pre-calcination of the catalyst at a temperature not higher than 350 ° C reduces the thermal effect of catalyst reduction and therefore can be recommended as a desirable step before catalyst reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1493465A SU356872A1 (en) | 1970-11-18 | 1970-11-18 | Method of reducing low temperature catalyst for carbon monoxide conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1493465A SU356872A1 (en) | 1970-11-18 | 1970-11-18 | Method of reducing low temperature catalyst for carbon monoxide conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU356872A1 true SU356872A1 (en) | 1975-01-25 |
Family
ID=20460070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1493465A SU356872A1 (en) | 1970-11-18 | 1970-11-18 | Method of reducing low temperature catalyst for carbon monoxide conversion |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU356872A1 (en) |
-
1970
- 1970-11-18 SU SU1493465A patent/SU356872A1/en active
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