中国环境科学
中國環境科學
중국배경과학
CHINA ENVIRONMENTAL SCIENCE
2014年
4期
862-868
,共7页
梁俊宁%陈洁%卢立栋%王佩
樑俊寧%陳潔%盧立棟%王珮
량준저%진길%로립동%왕패
煤化工行业%氮氧化物(NOx)%模拟燃烧实验%排放系数
煤化工行業%氮氧化物(NOx)%模擬燃燒實驗%排放繫數
매화공행업%담양화물(NOx)%모의연소실험%배방계수
coal industry%nitrogen oxide (NOx)%simulated combustion experiment%emission coefficient
通过现场监测和模拟燃烧实验的方法,分别对陕西某煤化工企业中的甲醇、二甲醚、合成氨和尿素工艺过程中的氮氧化物进行监测,并初步核算各煤化工行业氮氧化物的排放系数.结果显示,不同煤化工行业中,煤炭在作为原料利用时氮氧化物排放量不尽相同,其中甲醇行业氮氧化物排放量为153.19~252.43g/h,平均为211.24g/h；二甲醚行业氮氧化物排放量为22.38~52.20g/h,平均为35.39g/h；合成氨行业为246.48~359.65g/h,平均305.94g/h；尿素行业为13.70~26.75g/h,平均19.89g/h.不同行业氮氧化物的排放系数也有所差别,按照单位产品排放量核算时,各行业氮氧化物的排放系数分别为甲醇41.35~88.10g/t-产品、二甲醚62.27~145.25g/t-产品、合成氨213.47~322.43g/t-产品、尿素0.21~0.41g/t-产品,以单位原料煤消耗量核算出的氮氧化物排放系数分别是甲醇30.18~52.86g/t-原料煤、二甲醚22.83~53.26g/t-原料煤、合成氨119.72~172.73g/t-原料煤、尿素为0.14~0.28g/t-原料煤.通过比较可知,煤在作为原料利用时其氮氧化物的排放系数远小于煤的燃烧过程.
通過現場鑑測和模擬燃燒實驗的方法,分彆對陝西某煤化工企業中的甲醇、二甲醚、閤成氨和尿素工藝過程中的氮氧化物進行鑑測,併初步覈算各煤化工行業氮氧化物的排放繫數.結果顯示,不同煤化工行業中,煤炭在作為原料利用時氮氧化物排放量不儘相同,其中甲醇行業氮氧化物排放量為153.19~252.43g/h,平均為211.24g/h；二甲醚行業氮氧化物排放量為22.38~52.20g/h,平均為35.39g/h；閤成氨行業為246.48~359.65g/h,平均305.94g/h；尿素行業為13.70~26.75g/h,平均19.89g/h.不同行業氮氧化物的排放繫數也有所差彆,按照單位產品排放量覈算時,各行業氮氧化物的排放繫數分彆為甲醇41.35~88.10g/t-產品、二甲醚62.27~145.25g/t-產品、閤成氨213.47~322.43g/t-產品、尿素0.21~0.41g/t-產品,以單位原料煤消耗量覈算齣的氮氧化物排放繫數分彆是甲醇30.18~52.86g/t-原料煤、二甲醚22.83~53.26g/t-原料煤、閤成氨119.72~172.73g/t-原料煤、尿素為0.14~0.28g/t-原料煤.通過比較可知,煤在作為原料利用時其氮氧化物的排放繫數遠小于煤的燃燒過程.
통과현장감측화모의연소실험적방법,분별대협서모매화공기업중적갑순、이갑미、합성안화뇨소공예과정중적담양화물진행감측,병초보핵산각매화공행업담양화물적배방계수.결과현시,불동매화공행업중,매탄재작위원료이용시담양화물배방량불진상동,기중갑순행업담양화물배방량위153.19~252.43g/h,평균위211.24g/h；이갑미행업담양화물배방량위22.38~52.20g/h,평균위35.39g/h；합성안행업위246.48~359.65g/h,평균305.94g/h；뇨소행업위13.70~26.75g/h,평균19.89g/h.불동행업담양화물적배방계수야유소차별,안조단위산품배방량핵산시,각행업담양화물적배방계수분별위갑순41.35~88.10g/t-산품、이갑미62.27~145.25g/t-산품、합성안213.47~322.43g/t-산품、뇨소0.21~0.41g/t-산품,이단위원료매소모량핵산출적담양화물배방계수분별시갑순30.18~52.86g/t-원료매、이갑미22.83~53.26g/t-원료매、합성안119.72~172.73g/t-원료매、뇨소위0.14~0.28g/t-원료매.통과비교가지,매재작위원료이용시기담양화물적배방계수원소우매적연소과정.
Nitrogen oxide emissions from the processing of methanol, dimethyl ether, synthetic ammonia and urea production were monitored in a certain coal chemical factory in Shaanxi province, and the nitrogen oxide emission coefficients were calculated based on the results of both monitoring and combustion experiments. It was shown that Nitrogen oxide emissions ranged from the different coal chemical production industries. The NOx discharge amounts of methanol, dimethyl ether, synthetic ammonia and urea industries were separately between 153.19 and 252.43g/h (AV: 211.24g/h), 22.38and 52.20g/h (AV:35.39g/h), 246.48and 356.65g/h (305.94g/h), 13.70and 26.75g/h (19.89g/h). Per capita production NOx emission coefficients in different industries also varied, which were 41.33~88.10g/t (methanol), 62.27~145.25g/t (synthetic ammonia), 213.47~322.43g/t (synthetic ammonia), 0.21~0.41g/t (urea). Per capita coal consumption as raw material NOx emission coefficients were respectively 30.18~52.86g/t (methanol), 22.83~53.26g/t (synthetic ammonia), 119.72~172.73g/t (synthetic ammonia), 0.14~0.28g/t (urea). Compared with two group data, NOx emission coefficients with coal as raw material were much less than those from coal combustion process.
