摘要
在考虑电厂石灰石-石膏湿法脱硫技术造成的CO2排放的基础上,提出了利用循环煅烧/碳酸化分离二氧化碳过程中失活CaO替代脱硫用石灰石的新工艺.借助半经验公式,以600 MW机组为计算实例,进行了失活吸收剂和脱硫所需吸收剂的物料衡算.结果表明：锅炉排烟含CO2浓度为10％～15％时,保证CO2脱除效率85％～95％之间时,分离CO2排放的失活氧化钙物流为166.96～456.70 mol/s,足以提供脱硫需要的12.26～73.48 mol/s吸收剂同时,可减排因脱硫产生的CO21.94 ～ 11.64 t/h.
It had been noticed that in power plant due to limestone-gypsum wet desulphurization technology amount of CO2 was emissioned, we proposed a new method on the basis of limestone cyclic calcination/carbonation process. To make use of deactivationed CaO, some limestone was instend by CaO for desulfurization. Using semi-empirical formu- la, a 600 MW power plant unit was choosen as the calculating examples. Results show that the boiler exhaust contai- ning CO2 concentration from 10 % to 15 % , guarantee the CO2 removal efficiency between 85 % to 95 %. The deacti- vationed CaO mol mass is 166.96 to 456. 70 mol/s due to the separation of CO2 whitch is enough for desulfurization need from 12.26 to 73.48 mol/s, at the same time it can reduce CO2emissions froml. 94 to 11.64 t/h.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2014年第1期101-105,共5页
Journal of North China Electric Power University：Natural Science Edition
基金
河北省自然基金资助项目(E2013502292)
关键词
钙基吸收剂
失活吸收剂
脱硫
二氧化碳排放
calcium based sorbent
deactivation absorbent
desulfurization
CO2emissions
