玻璃熔窑烟气除尘、脱硫、脱硝协同治理技术的筛选与评估

Screening and evaluation of collaborative treatment technology of dust,sulfur and nitrogen removal for flue gas in glass furnace

筛选了8种典型的玻璃熔窑烟气除尘、脱硫、脱硝协同治理技术,对其进行以环境指标、经济指标和技术指标为一级指标的技术评估。结果表明,使用电能、天然气等清洁能源,能从源头上减少NO x的生成,综合性能较好。对于使用清洁能源的玻璃熔窑,特别是新建玻璃熔窑,重点考虑经济指标时推荐选择天然气+原料控制脱硫+纯氧燃烧+袋除尘技术,而重点考虑环境指标和技术指标时推荐选择电能+原料控制脱硫技术;若脱硝有特殊要求,重点考虑环境指标和技术指标时推荐选择天然气+原料控制脱硫+干法脱硫+复合陶瓷滤筒除尘脱硝一体化技术,重点考虑经济指标时推荐选择天然气+原料控制脱硫+静电除尘+选择性催化还原脱硝(SCR)技术。对于现阶段以非清洁能源为主导的玻璃熔窑,重点考虑环境指标时推荐选择煤制气+原料控制脱硫+静电除尘+SCR+湿法脱硫+湿式静电除尘技术;在重点考虑经济指标时推荐选择煤制气+原料控制脱硫+静电除尘+SCR+半干法脱硫+袋除尘技术或传统重污染能源+原料控制脱硫+静电除尘+SCR+半干法脱硫+袋除尘技术;重点考虑技术指标时优先考虑煤制气+原料控制脱硫+静电除尘+SCR+半干法脱硫+袋除尘技术或传统重污染能源+原料控制脱硫+静电除尘+SCR+半干法脱硫+袋除尘技术,也可考虑煤制气+原料控制脱硫+静电除尘+SCR+湿法脱硫+湿式静电除尘技术。

8 typical collaborative treatment technologies of dust,sulfur and nitrogen removal for flue gas in glass furnace were sieved out to be evaluated by primary indicators like environmental indicators,economical indicators and technological indicators.Results showed that glass furnaces using clean energy like electricity or natural gas could reduce NO x production from the source,which could achieve good comprehensive effect.For glass furnaces using clean energy,especially new ones,natural gas+raw material control desulfurization+combustion in pure oxygen+bag dust removal technology was suggested if focusing on economical indicators,while electricity+raw material control desulfurization technology was suggested if focusing on environmental indicators and technological indicators.When nitrogen removal needed special requirement,natural gas+raw material control desulfurization+dry desulfurization+dust and nitrogen integrated removal technology of composite ceramic filter cartridge was suggested if focusing on environmental indicators and technological indicators,while natural gas+raw material control desulfurization+electrostatic dust removal+selective catalytic reduction denitrification(SCR)technology was suggested if focusing on economical indicators.For glass furnaces mainly using unclean energy at present,coal gas+raw material control desulfurization+electrostatic dust removal+SCR+wet desulfurization+wet electrostatic dust removal technology was suggested if focusing on environmental indicators;coal gas+raw material control desulfurization+electrostatic dust removal+SCR+semi-dry desulfurization+bag dust removal technology or traditional heavy pollution energy+raw material control desulfurization+electrostatic dust removal+SCR+semi-dry desulfurization+bag dust removal technology was suggested if focusing on economical indicators;coal gas+raw material control desulfurization+electrostatic dust removal+SCR+semi-dry desulfurization+bag dust removal technology or traditional heavy pollution energy+raw material control desulfurization+electrostatic dust removal+SCR+semi-dry desulfurization+bag dust removal technology was firstly suggested if focusing on technological indicators,and coal gas+raw material control desulfurization+electrostatic dust removal+SCR+wet desulfurization+wet electrostatic dust removal technology was also optional.