Title:
【発明の名称】窒素酸化物除去媒体の導入量の制御方法及び装置
Document Type and Number:
Japanese Patent JP3002819
Kind Code:
B2
Abstract:
In a method to reduce nitric oxide atmospheric emissions from a combustion process, ammonia (8a) is injected into the flow of combustion gases upstream of a catalytic converter (SCR process), or urea or a similar substance is spray-injected into an afterburner chamber (SNCR process). The agent is introduced in proportion to the quantity of nitric oxide (11a). The quantity of agent introduced is calculated and determined by reference to both: (a) the quantity of nitric oxide measured (16b) and a first process setting (14b) determining the quantity of agent; and (b) a second process setting (13b) for the quantity of agent which is determined by the agent slippage; and that (c) either the first or second process setting is adopted (12b), depending upon the level of nitric oxide detected. Also claimed is a regulation and control assembly for the above method.
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Inventors:
Joseph Merck
Marcel Wiederkale
Marcel Wiederkale
Application Number:
JP7087598A
Publication Date:
January 24, 2000
Filing Date:
March 19, 1998
Export Citation:
Assignee:
Von Roll Ummwert Technique Actien Gezel Shaft
International Classes:
B01D53/74; B01D53/86; B01D53/56; G05B21/02; G05D21/02; (IPC1-7): B01D53/56; B01D53/74
Domestic Patent References:
| JP61133126A | ||||
| JP61153124A | ||||
| JP8117553A |
Attorney, Agent or Firm:
Nobuo Kaida (3 outside)