静电除尘器在煤磨机上的应用

鹤岗矿务局水泥厂煤磨系统φ2.2×4.4m风扫式烘干兼粉磨机,废气直接排放,其中煤粉排放浓度为30g/m~3,不仅严重污染环境,而且每年造成的经济损失达10多万元。为此,我们根据煤粉易燃、易爆的特点,结合电除尘器原理,同时考虑投资少运行费用低,自行设计制造了立筒式电除     

建筑陶瓷行业只能煤改气？

建筑陶瓷企业的日子不好过。一方面,因为房地产行业不景气,市场需求下降;另一方面,一些地方政府出于环保考虑,要求企业实施煤改气,给企业生产带来更大的困难。 广东省建筑材料行业协会会长吴一岳说,现在的建陶企业处在十字路口上。改用天然气,不仅成本会增加,还面临供给不足的风险：但如果用其他的煤的清洁利用技术代替天然气,又担心能否得到政府部门的认可。     

太原市采暖期PM_(10)中PAHs的碳同位素组成及源贡献率

在太原市7个点位采集采暖期PM10样品,用气相色谱-同位素质谱仪测定环境空气PM10和污染源(煤烟尘和机动车尾气)中9种多环芳烃(PAHs)的碳同位素组成(δ13C),并根据碳同位素质量平衡原理定量环境空气PAHs的源贡献率.结果表明:煤烟尘中PAHs随环数增加贫13C,机动车尾气中PAHs随环数增加富13C;各点位PAHs的δ13C值差别不大,变化趋势与煤烟尘基本一致,煤烟尘是城市PAHs的主要污染源;煤烟尘对各点位荧蒽和苯并[a]蒽的贡献率都大于机动车尾气,对的贡献率与机动车尾气相当,煤烟尘是各点位荧蒽和苯并[a]蒽的主要来源,是二者共同作用的结果;煤烟尘和机动车尾气对全市环境空气中荧蒽、苯并[ghi]荧蒽、苯并[a]蒽和苯并[b+k]荧蒽贡献率比都约为7:3,太原市环境空气PAHs污染属于煤烟尘和机动车尾气的复合污染.     

On-board measurement of emissions from liquefied petroleum gas, gasoline and diesel powered passenger cars in Algeria

On-board measurements of unit emissions of CO,HC,NOx and CO2 were conducted on 17 private cars powered by different types of fuels including gasoline,dual gasoline–liquefied petroleum gas(LPG),gasoline,and diesel. The tests performed revealed the effect of LPG injection technology on unit emissions and made it possible to compare the measured emissions to the European Artemis emission model. A sequential multipoint injection LPG kit with no catalyst installed was found to be the most efficient pollutant reduction device for all of the pollutants,with the exception of the NOx. Specific test results for a sub-group of LPG vehicles revealed that LPG-fueled engines with no catalyst cannot compete with catalyzed gasoline and diesel engines. Vehicle age does not appear to be a determining parameter with regard to vehicle pollutant emissions. A fuel switch to LPG offers many advantages as far as pollutant emissions are concerned,due to LPG's intrinsic characteristics.However,these advantages are being rapidly offset by the strong development of both gasoline and diesel engine technologies and catalyst converters. The LPG's performance on a chassis dynamometer under real driving conditions was better than expected. The enforcement of pollutant emission standards in developing countries is an important step towards introducing clean technology and reducing vehicle emissions.     

乌鲁木齐市“煤改气”后治理大气污染关键措施研究

大气污染一直制约着乌鲁木齐市社会经济文化发展。中央新疆工作座谈会以来,乌鲁木齐市"煤改气"工程,环境空气质量明显好转。但是,燃煤、扬尘、机动车尾气等污染源依然存在,持续改善环境空气质量,依然任重道远。为此本文针对乌鲁木齐市"煤改气"后治理大气污染关键措施展开研究。     

陈塘热电搬迁工程节能减排新举措

按照天津市节能减排战略部署,天津陈塘热电有限公司＂煤改气＂搬迁工程在设计中采用先进可行的节电、节水及节约原材料的措施,能源和资源利用合理,设计中严格贯彻了节能、环保的指导思想,在技术方案和设备、材料选择、建筑结构等方面,充分考虑了节能的要求。     

液化烃储罐底部防泄漏技术措施分析

以法律法规、标准规范为依据,旨在解决液化烃储罐泄漏时,液化烃能及时导出,减少产生火灾爆炸的危险源并降低其危害性,防止二次泄漏、次生灾害和环境污染事件的发生、避免排放火炬燃烧损失等,达到安全可靠.本文结合现场检查和建设项目审查及相关企业考察,借鉴相关的事故案例,就发现的问题及采取措施的可靠性进行分析论证.     

焦油渣和煤沥青焚烧处置实验研究

通过开展残渣与有机污染土壤的混合焚烧实验,分析了炉渣、烟气中多环芳烃和重金属的含量及浓度,明确了残渣焚烧的适用工艺及条件。结果表明,在一段炉焚烧温度600~900℃、二段炉出口温度≥1 100℃、烟气停留时间≥2s、急冷器出口温度≤150℃的条件下,炉渣中重金属含量较高,少部分进入到尾气中,多环芳烃含量极少,大部分被焚烧破坏和尾气净化设施去除。实验结果表明,在残渣掺入量为30%条件下,尾气排放能够满足标准要求。