Removal of NOx from flue gas with radical oxidation combined with chemical scrubber

In this paper, removal of NOx(namely DeNOx) from flue gas by radical injection combined with NaOH solution(26% by weight of NaOH in water) scrubbing was investigated. The experimental results showed that the steady streamer corona occurs through adjusting the flow rate of the oxygen fed into the nozzles electrode. The vapor in the oxygen has influence on the V-I characteristics of corona discharge. Both HNO2 and HNO3 come into being in the plasma reactor and the DeNOx efficiency in the plasma reactor is more than 60%. The overall DeNOx efficiency of the whole system reaches 81.7 % when the NaOH solution scrubbing is collaborated.     

烟道气中二氧化硫监测质量控制探讨

通过对碘量法测定烟道气中二氧化硫在布点,采样,样品保存等方面的分析,找出了二氧化硫监测结果产生误差的原因,提出了改进方法,进而提高监测数据的准确性和可靠性。     

Capture of carbon dioxide from flue gas on TEPA-grafted metal-organic framework Mg2(dobdc)

Carbon dioxide （CO2） adsorption on a standard metal-organic framework Mg2（dobdc） （Mg/DOBDC or Mg-MOF-74） and a tetraethylenepentamine （TEPA） modified Mgz（dobdc） （TEPA-Mg/DOBDC） were investigated and compared. The structural information, surface chemistry and thermal behavior of the adsorbent samples were characterized by X-ray powder diffraction （XRD）, infrared spectroscopy （IR）, thermogravimetric analysis （TGA） and nitrogen adsorption-desorption isotherm analysis. CO2 adsorption capacity was measured by dynamic adsorption experiments with N2-CO2 mixed gases at 60℃. Results showed that the CO2 adsorption capacity of Mg/DOBDC was significantly improved after amine modification, with an increase from 2.67 to 6.06 mmol CO2/g adsorbent. Moreover, CO2 adsorption on the TEPA-Mg/DOBDC adsorbent was promoted by water vapor, and the adsorption capacity was enhanced to 8.31 mmol CO2/g absorbent. The adsorption capacity of the TEPA-Mg/DOBDC adsorbent dropped only 3% after 5 consecutive adsorption]desorption cycles. Therefore, this kind of adsorbent can be considered as a promising material for the capture of CO2 from flue gas.     

几种可能来源对广东某地空气中二(口恶)英的影响

采用高分辨气相色谱法/高分辨质谱法（HRGC/HRMS）对广东某地生活垃圾焚烧厂烟道气及周边环境空气和可能来源的环境空气中17种二英进行了分析.讨论了所有样品中同系物、主要毒性贡献体的特性.并运用主成分和聚类分析法,探究了焚烧厂周边监测点位与焚烧厂排放烟气及可能来源的关系.结果表明周边空气中二英浓度低于焚烧厂烟道气,且不受主导风向的影响.在调查基础上,推断轮胎厂及露天焚烧为可能污染源.轮胎厂二英浓度均低于上风向监测点,露天焚烧空气中二英高于厂界外监测点.对各同类物百分比分析可知,烟道气和所有空气中主要同类物为OCDD、1,2,3,4,6,7,8-HpCDD及1,2,3,4,6,7,8-HpCDF,但空气中同类物还包括OCDF;焚烧厂周边监测点与轮胎厂空气中二英单体百分浓度相似,烟气与露天焚烧中二英单体分布相似.进一步研究表明所有空气样品中单体1,2,3,7,8-PeCDD和2,3,4,6,7,8-HxCDF与总毒性当量浓度的线性相关系数分别为0.95和0.75,相关性较强.主成分分析及聚类分析表明垃圾焚烧厂对周边空气产生影响,轮胎厂对上风向产生影响,露天焚烧对厂界影响较小.     

用煤烟道气沉淀造纸黑液

一、前言我国大多数造纸厂是用烧硷或硫化硷与植物纤维一起高温高压蒸煮,植物纤维中木质素、脂肪酸、树脂等类有机物成为可溶性物而进入废水中,排出黑褐色废液称造纸黑液。每生产1吨纸浆需用200—     

电子束净化烟气机理探讨

探讨了电子束法净化电厂烟道气过程中自由粒子的产生以及SO2与NOx的脱除机理，结果表明：SO2的脱除有两条途径-热化学和辐射化学，在当量氨的存在下，热化学起主导作用，脱除NOx的过程则纯粹是辐射诱发的氧化-还原反应。     

红外分光光度法测定烟道气中油烟的探讨

结合水体石油类监测分析方法在实际应用中的经验，对饮服业油烟进行监测，并提出几点看法。