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1957-06-25
Recovery of nh3 from a gaseous mixture containing nh3 and hcn
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1996-05-13
Method of producing carbamide
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1969-03-26
Process for recovering nitrogen oxides from waste gases
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1977-11-16
Method for removing sulphur dioxide from an exhaust gas
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1976-02-24
Recycle process for the preparation and processing of a hydroxylammonium salt solution
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1970-07-22
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2002-06-15
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GB1505477A
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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
GB1005977A
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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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1960-05-03
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SU779365A1
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1980-11-15
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EP0292823B1
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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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2003-04-30
Verfahren zur destillation von ammoniak
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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
GB1129939A
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1968-10-09
Process for the separation and recovery of ammonia and carbon dioxide from an ammoniacal ammonium carbonate solution
Warington
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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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1980-12-15
Способ регенерации отработанных сульфитных щелоков на магниевом основании производства целлюлозы
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1986-11-30
Способ получени серы
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