SUN Huafang1, YANG Shiji 2 1.Zhejiang Energy Jiahua Power Generation Co.. Feasibility study on denitration transformation of two 210MW unit boilers[J]. Thermal power generation, 2013, 42(7): 123-125.
SUN Huafang1, YANG Shiji 2 1.Zhejiang Energy Jiahua Power Generation Co.. Feasibility study on denitration transformation of two 210MW unit boilers[J]. Thermal power generation, 2013, 42(7): 123-125.DOI:
某2×210MW机组锅炉脱硝系统改造
摘要
对某电厂2×210MW机组锅炉采用LNB+SCR联合脱硝技术进行了脱硝系统改造
其中SCR工艺采用高灰型布置
反应器入、出口不增设灰斗
选择蜂窝式催化剂
按"2+1"模式布置
增设蒸汽吹灰器和声波吹灰器
以液氨作为还原剂。由于燃用的煤种含硫量较低
原空气预热器换热管管径较大
因此空气预热器不做改造;但必须对引风机进行改造
以满足新系统要求。
Abstract
Denitration transformation of two 210MW unit boilers in a power plant was presented.The low NOxburner combined with SCR technology was adopted.For the SCR device
high ash content layout was employed
and no inlet and outlet ash bucket was equipped;the honeycomb catalyst was selected and arranged according to"2plus 1"mode;the steam sootblower and acoustic sootblower were applied
and liquid ammonia was used as the reductant.Due to low sulfur content in the fired coal and large diameter of the original air preheater tubes
the air preheater can not be modified.However
the original induced draft fan can not meet needs of the new system