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对活性炭及瓷拉西环两种填料用自来水进行脱硫对比实验,证明无论是等宏观表面积还是等填料层高度,活性炭填料的脱硫率均高于瓷拉西环。在活性炭填料塔中进行了FeSO4液相催化氧化脱硫实验,考察了液气比、空塔气速、吸收温度及SO2进口浓度对脱硫率的影响。综合实验结果表明,连续运行500min时,脱硫率及吸收液pH分别稳定在93.5%以上及4.6左右,且两者的变化趋势基本一致。 相似文献
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丁建础 《再生资源与循环经济》2004,(5)
用钡渣对煤矿酸性废水进行了处理实验,确定了钡渣处理煤矿酸性废水的工艺参数,钡渣对煤矿酸性废水具有较好的净化效果,开辟了钡渣资源化利用的新途径. 相似文献
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用钡渣处理含铬(Ⅵ)废水 总被引:3,自引:0,他引:3
探索了用钡渣处理含铬(Ⅵ)废水的最佳实验条件,在废水pH小于6、钡渣与铬(Ⅵ)质量比为60~80、钡渣粒度为180~200目、反应时间为90min的条件下,废水中铬(Ⅵ)的去除率较高,钡渣对含铬(Ⅵ)废水的去除行为符合Langmuir等温方程。钡渣处理含铬(Ⅵ)废水的工业化应用试验表明,其工艺简单,操作方便,成本低。 相似文献
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对国内外常用的两种航空煤油(简称航煤) 精制工艺——加氢工艺和非加氢工艺进行了介绍,结合各自的工艺流程对“三废”排放情况进行了分析,并提出了相应的污染防治措施。分析结果表明:与加氢工艺相比,非加氢工艺相对简单,对反应的控制要求较低;两种工艺排放的废气和废水基本相同,包括酸性水、含油废水和酸性气等;非加氢工艺产生的废渣量远大于加氢工艺,除包括加氢工艺产生的废催化剂和废瓷球外,还包括废白土、废岩盐和废脱酸吸附剂等;航煤精制工艺的有组织排放污染物可通过酸性水汽提装置和硫磺回收装置进行处理,废渣由原生产厂家回收或按性质分类送往符合资质的相应渣场处理。 相似文献
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《化工环保》2010,(6)
<正> 与印染废水结合的脱硫工艺该发明公开了一种与印染废水结合的脱硫工艺,利用电石渣、石灰或石灰石作为脱硫剂对烟气进行湿法脱硫,利用脱硫剂配制脱硫浆液的化浆过程用水采用印染废水;脱硫浆液中固体的质量分数为8%~15%,脱硫系统的pH为5.2~6.0,液气流量比为8~12 L/m~3。该发明的脱硫工艺以电石渣和印染废水的混合浆液作为脱硫剂对烟气进行湿法处理,大量减少了印染废水的排放量,对COD在10 000 mg/L以上的高浓度废水的COD去除率在80%以上,色度去除率在90%以上,废水水量排放减少30%以上。/CN101816889A,2010-09-01 相似文献
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阐述了氨法烟气脱硫技术的原理和工艺特点.介绍了Walther氨法、AMASOX氨法、GE氨法、NADS氨-肥法、电子束氨法和流光放电氨法烟气脱硫工艺,重点介绍了新型流光放电氨法烟气脱硫技术的特点及其工程应用情况.展望了氨法烟气脱硫技术的应用前景. 相似文献
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The objective of this paper is to evaluate the combustion process of municipal solid waste combustion in a grate furnace both experimentally and numerically by using data of a reference experiment with over-stoichiometric primary air supply. Measurements were carried out inside the combustion chamber of a pilot plant by monitoring temperatures and sampling gaseous combustion products along the bed surface. The data were assessed using elemental and energy balances. Experimental data of the axial temperature profiles of the flue gas, the fuel bed and the grate bars, as well as local gas flows and the flue gas composition measured above the fuel bed along the grate were used to describe the conversion process, including drying and carbon burnout. These data served as input to model the thermo- and fluid dynamic processes of the gas phase above the bed inside the combustion chamber. For this purpose the commercial code FLUENT was employed to carry out the simulations. Thus, the turbulent temperature, flow and species distributions in the combustion chamber of the pilot waste incinerator TAMARA were predicted. The results of the FLUENT modeling showed that under the prevailing conditions the flue gas burnout is almost completed before entering the first flue due to high temperatures, effective mixing and sufficient residence times of the flue gas inside the combustion chamber. This agrees well with the experimental results inside the first flue. On the basis of the above mentioned results, design and parametric studies can be carried out in a more efficient way by saving cost and time. 相似文献
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针对钢铁行业烧结烟气的特点及同时脱硫、脱硝技术发展现状,研究开发了烧结烟气同时脱硫、脱硝一体化工艺——"双碱法"液相氧化技术。从该工艺特点、脱硫、脱硝机理等方面阐述了其应用于烧结烟气的可行性。 相似文献
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在分析铁矿石烧结烟气脱硫灰成分的基础上,利用脱硫灰中的亚硫酸盐还原废水中的Cr(Ⅵ),再加碱中和,通过沉淀去除铬。在初始废水pH 1.0、脱硫灰加入量0.06 g/mg(以Cr(Ⅵ)计)、振荡转速160 r/min、振荡时间25 min、中和pH 7.5的最佳工艺条件下处理模拟含铬废水,Cr(Ⅵ)质量浓度由10.00 mg/L降至0.18 mg/L,去除率达98.2%。最佳工艺条件下处理3种实际含铬废水,处理后出水的Cr(Ⅵ)和总铬的质量浓度及pH均满足GB 8978—1996《污水综合排放标准》。实现了对脱硫灰的综合利用、化害为利和以废治废的目标。 相似文献
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Anthony EJ Berry EE Blondin J Bulewicz EM Burwell S 《Waste management (New York, N.Y.)》2005,25(3):265-279
LIFAC is a more recent addition to flue gas desulphurization methods for reducing sulphur emissions during coal combustion for the production of electricity. Ashes from the combustion of a low-sulphur lignite coal using LIFAC technology were used to evaluate different ash management strategies. The ashes, as produced and after treatment by the CERCHAR hydration process, were examined for their disposal characteristics and their utilization potential in concrete. They were also evaluated as underground disposal material using the AWDS process. 相似文献