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Selective catalytic reduction
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Selective catalytic reduction means converting nitrogen oxides, also referred to as NOx with the aid of a catalyst into diatomic nitrogen, and water. A reductant, typically anhydrous ammonia, aqueous
Hino truck and its Standardized SCR Unit which combines SCR with Diesel Particulate Active Reduction (DPR). DPR is a diesel particulate filtration sys
Hino truck and its Standardized SCR Unit which combines SCR with Diesel Particulate Active Reduction (DPR). DPR is a diesel particulate filtration system with regeneration process that uses late fuel injection to control exhaust temperature to burn off soot.
Urea
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Urea, also called carbamide, is an organic compound with chemical formula CO2. This amide has two amino groups joined by a carbonyl functional group. It is thus the simplest amide of carbamic acid.
Selective catalytic reduction
…the aid of a catalyst into diatomic nitrogen (N 2), and water (H 2O). A reductant, typically anhydrous ammonia (NH 3), aqueous ammonia (NH 4OH), or a urea (CO(NH 2) 2) solution, is added to a stream of flue or exhaust gas and is reacted onto a catalyst. As the reaction drives toward completion, nitrogen…
Sample of Urea
Sample of Urea
Structure of [Fe(urea)6]2+ showing intramolecular hydrogen bonds. Color code: blue = N, red = O.
Structure of [Fe(urea)6]2+ showing intramolecular hydrogen bonds. Color code: blue = N, red = O.
A plant in Bangladesh that produces urea fertilizer
A plant in Bangladesh that produces urea fertilizer
Urea plant using ammonium carbamate briquettes, Fixed Nitrogen Research Laboratory, ca. 1930
Urea plant using ammonium carbamate briquettes, Fixed Nitrogen Research Laboratory, ca. 1930