公开(公告)号：US06694900B2

公开(公告)日：2004-02-24

申请号：US10014828

申请日：2001-12-14

申请人： Vitali Lissianski ,  George Rizeq ,  Vladimir Zamansky

发明人： Vitali Lissianski ,  George Rizeq ,  Vladimir Zamansky

IPC分类号： F23J1500

CPC分类号： F23G7/07 ,  F23G5/027 ,  F23G5/16 ,  F23G5/30 ,  F23G7/001 ,  F23G7/10 ,  F23G2201/40 ,  F23L9/04

摘要： The methods and systems of the present invention reduce NOx emissions in combustion systems, e.g., power plants, boilers, furnaces, incinerators, engines, and any combinations thereof. The inventive process decreases NOx emissions from stationary combustion sources and provides improved utilization of low-grade biomass and other waste fuels without slagging and fouling problems. The invention reduces NOx emissions while utilizing gasified fuels, including biomass and low-grade waste fuels, by gasifying solid fuels and injecting produced gas into a reburning zone of, for example, a boiler at relatively low temperatures and in relatively small amounts. By feeding the gas directly into a reburning zone, the need for gas cleaning is eliminated or substantially reduced as tars are burned in the flame and alkali species may be present at much lower levels than is the case with direct combustion applications.

摘要翻译： 本发明的方法和系统减少燃烧系统中的NOx排放，例如发电厂，锅炉，炉，焚化炉，发动机及其任何组合。 本发明的方法降低了来自固定燃烧源的NOx排放，并提供了低等级生物质和其他废弃燃料的改进的利用，而没有结渣和结垢问题。 本发明通过气化固体燃料并将产生的气体注入例如锅炉的再燃烧区域，同时利用气化燃料（包括生物质和低等级的废燃料）来降低NOx排放，并在相对较低的温度和相对较少的量下进行。 通过将气体直接供给到再燃烧区域，由于焦油在火焰中燃烧，因此消除或显着减少对气体清洗的需要，并且碱性物质可以以比直接燃烧应用的情况低得多的水平存在。