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采用哌嗪等二元胺和二乙醇胺为吸收剂,对模拟烟气进行SO2的吸收解吸实验研究,筛选出性能优异的吸收剂,并考察添加剂H2 S O 4对其性能的影响。实验表明:可再生胺类吸收剂脱硫率可接近100%,二元胺吸收剂较醇胺的SO 2吸收量大、pH值随时间变化慢、首次解吸率高;羟乙基支链对胺类吸收剂的抗氧化能力、SO2吸收量和首次解吸率均有影响,环状二元胺比链状二元胺的抗氧化能力好、首次解吸率高;在N-(2-羟乙基)哌嗪溶液中添加硫酸构成N-(2-羟乙基)哌嗪/H 2S O 4脱硫体系后,脱硫率未受影响、SO2吸收量变小、首次解吸率显著提高,具有更好的循环使用性能。 相似文献
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Lasse Wallquist Vivianne H.M. Visschers Michael Siegrist 《International Journal of Greenhouse Gas Control》2009,3(5):652-657
Laypeople's acceptance and perception of Carbon Dioxide Capture and Storage (CCS) can have an influence on its political feasibility. It is important, therefore, to study how laypeople perceive CCS and which cognitions they hold with respect to this technique. We conducted in-depth interviews with laypeople (N = 16) to explore their mental concepts of CCS. Little knowledge about CCS was detected among laypeople. We also found that laypeople fear that a deployment of CCS could create incentives that would hinder a sustainable development of the energy economy. A misunderstanding of the concepts of hydro- and geostatic pressure, as well as a lack of knowledge about the physical–chemical properties of carbon dioxide seemed to trigger fundamental rejection of CCS among some laypeople. This qualitative study identifies concepts that underlie CCS perception, and these should be objects of future studies. We provide some suggestions for risk management and communication about CCS. 相似文献
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Brian P. Leaderer Rebecca T. Zagraniski Jan A. J. Stolwijk 《Environmental management》1977,1(1):31-37
A method is presented here by which the actual numbers of individuals in the U.S. population who would be expected to suffer respiratory illness as a result of exposure to ambient nitrogen dioxide (NO2) concentrations in excess of the Federally-designated ambient air quality standard can be estimated. At the same time we have attempted to quantify how these adverse health effects would be alleviated by various degrees of reductions in current ambient concentrations. In addition, the health benefit expected to be derived by various NOx emission control strategies will be examined utilizing the health benefit estimation method presented.It is estimated that there were approximately 33.2×106 excess cases of respiratory illnesses in the U.S. in 1973 associated with ambient NO2 concentrations in excess of the national ambient standard. A reduction of approximately 50 to 60 percent below 1973 NO2 levels is needed to essentially eliminate excess respiratory illness associated with ambient NO2 concentration. 相似文献
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Over the last three decades, ambient concentrations of sulfur dioxide (SO2) air pollution have declined by approximately 80%. This paper tests whether the 1970 Clean Air Act and its subsequent amendments caused this decline. The centerpiece of this legislation is the annual assignment of all counties to SO2 nonattainment or attainment categories. Polluters face stricter regulations in nonattainment counties. There are two primary findings. First, regulators pay little attention to the statutory selection rule in their assignment of the SO2 nonattainment designations. Second, SO2 nonattainment status is associated with modest reductions in SO2 air pollution, but a null hypothesis of zero effect generally cannot be rejected. This finding holds whether the estimated effect is obtained with linear adjustment or propensity score matching. Overall, the evidence suggests that the nonattainment designation played a minor role in the dramatic reduction of SO2 concentrations over the last 30 years. 相似文献
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CO2是《京都议定书》要求减排的6种温室气体之一,《京都议定书》还确立了有助于发展中国家获得资金和先进技术的清洁发展机制(CDM)。本文结合实际工程案例,介绍了合成氨副产CO2气的回收和利用方法,为我国氮肥行业申请CDM项目资助,回收利用CO2,减少CO2排放提供技术参考。 相似文献
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用二氧化氯降解废水中的苯胺类化合物(2)──降解机理的探讨 总被引:5,自引:0,他引:5
本文在上文(1)的基础上,进一步研究了经二氧化氯处理前后BOD_5/COD的变化规律,其比值大于或接近0.3.其降解产物有醌及醌的氧化产物和NHI.对苯胺及二氧化氯来说其.反应级数为1,整个反应为二级反应. 相似文献