Nitrogen oxides reducing agent and a phosphate

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专利权人:

NALCO FUEL TECH

发明人:

DIEP, DANIEL V.

申请号：

US19940209541

公开号：

US5489420(A)

申请日:

1994.03.10

申请国别(地区):

美国

年份:

1996

代理人:

摘要：

Processes and compositions enable selective noncatalytic reduction (SNCR) in the gas phase at temperatures above 950 DEG C. to reduce the environmental damage caused by NOx and related emissions. By utilizing a nitrogenous NOx-reducing agent, such as urea, in combination with a phosphate at a ratio of nitrogen in the NOx-reducing agent to phosphorous of less than about 50:1, NOx reduction is improved and carbon monoxide, nitrous oxide and ammonia are maintained at low levels.

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