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Recovery of nh3 from a gaseous mixture containing nh3 and hcn
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1971-11-25
Verfahren zur Abtrennung und Gewinnung von sauren Gasen aus Gasgemischen
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Verfahren zum säuren Beizen von Stahlen, insbesondere von rostfreien Stahlen.
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1977-11-16
Method for removing sulphur dioxide from an exhaust gas
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Recycle process for the preparation and processing of a hydroxylammonium salt solution
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1970-07-22
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1978-03-30
Process for the conversion of the ammonia and hydrogen sulphide contained in coke-oven gases into nitrogen and water and into sulphur respectively
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1965-09-29
Improvements in or relating to processes for treating gaseous effluents
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1976-04-06
Cyclic process for preparing and working up a hydroxylammonium salt solution
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1980-11-15
Способ обработки фосфогипса
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1991-08-21
Verfahren zur NO-Rückgewinnung aus dem bei der Ammoniumnitritherstellung anfallenden Abgas
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1952-02-05
Method of preparing substantially iron-free ammonium sulfate from spent pickle liquor
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Verfahren zur destillation von ammoniak
Aulakh et al.
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Azide effects upon N2O emission and transformations of N in soils
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1973-01-25
Verfahren zur herstellung von alkandicarbonsaeuren
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1979-11-30
Способ очистки газов от окислов азота
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1968-10-09
Process for the separation and recovery of ammonia and carbon dioxide from an ammoniacal ammonium carbonate solution
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I.—On the part taken by oxide of iron and alumina in the absorptive action of soils
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1982-11-16
Werkwijze voor het strippen van ammoniak en kooldioxyde uit een waterige ammoniumcarbonaatoplossing.
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1980-12-15
Способ регенерации отработанных сульфитных щелоков на магниевом основании производства целлюлозы
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Способ получени серы