共查询到20条相似文献,搜索用时 109 毫秒
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通过对管式炉加热量和焦炉可回收烟气余热量计算分析,通过对管式炉蒸苯工艺和焦炉烟气余热蒸苯工艺富油结焦可能性比较分析,论证了焦炉烟气余热蒸苯工艺的可行性。 相似文献
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针对废催化剂项目的安全隐患,分析该逆流式工艺系统存在的问题,论证贫氧烟气脱油技术.首先采用铝甑分析物料的特性,再采用管式炉分析物料的特性,然后确定烟气含氧量、温度,物料的出口温度及停留时间,保证安全脱油.结果表明,烟气含氧量控制在5%,物料出口温度控制在570℃,停留时间1.5h以上时,脱油效率可达99.99% 以上,... 相似文献
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针对列管式空气预热器在使用中出现的一些事故和问题,提出设计改进建议,以在充分发挥材料潜能的基础上提高系统的可靠性.在空气预热器前设置装有挡油管的进气装置,除去烟气夹带的油沫,以防止油沫进入预热器内继续燃烧损坏设备.当烟气将大量油沫带入进气装置内燃烧时,挡油管首先熔断,高温烟气从挡油管内排出,同时蜂鸣器报警.此外,在进气装置的前排挡油管内设远传温度计,在第一时间内感知油沫燃烧情况. 相似文献
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针对油母页岩干馏装置烟气中含有页岩油和页岩粉尘的特点和现有脱硫系统在运行中存在问题进行分析,通过对照湍流传质脱硫工艺与传统脱硫工艺技术指标,阐述了湍流传质技术在含有页岩油和页岩粉尘的烟气脱硫的应用优势。 相似文献
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采用煤油作膜溶剂,L-113B作表面活性剂,Ca(OH)2为内相液,海水为外相液,对乳状液膜体系进行了烟气脱硫的研究。还通过实验考察了表面活性剂的用量、外相液浓度、油内比、乳水比等对脱硫效率的影响。通过正交实验确定了在最佳条件下,烟气脱硫效率可达98.86%。 相似文献
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在拜耳法氧化铝生产中,有机物常会伴随铝土矿进入到铝酸钠溶液中。随着生产的进行,有机物含量会逐渐增加,严重的影响着氧化铝的正常生产。本文研究了浓缩结晶法对铝酸钠溶液中有机物排除率的影响规律,结果显示,有机物的排除率与苛性碱浓度密切相关,当苛性碱浓度约为360 g/L时,有机物的排除率最高,可达80%以上。 相似文献
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CTMAB—粘土吸附处理水中苯酚,苯胺和对硝基苯酚的性能及应用研究 总被引:26,自引:3,他引:26
本文用溴化十六烷基三甲胺分别改性膨润土,沸石和硅藻土,研究了CTMAB-粘土吸附处理水中苯酚,对硝苯酚和苯胺的适宜条件,探讨了粘土种类,改性时所用CTMAB浓度以及有机物本身性质对粘土吸附性能的影响。 相似文献
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介绍碱性氮化合物对油品质量和加工过程影响,加氢精制脱碱性氮效率和存在问题,研制开发出二氧化碳酸性水溶液洗涤脱除碱性氮新技术,可将油品中碱性氮化合物分离出来,洗涤柴油脱碱氮率平均达65%以上,提高了油品安全性,本技术可以脱除碱性氮后再进行加氢精制是劣质油加工的一个新途径。此方法工艺简单,投资少,成本低。 相似文献
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采用酸碱洗涤-溶剂萃取的方法对兰州窑街的页岩油中的氮类化合物进行了提取。产物经GC—MS进行了测定,用色谱峰面积归一化法确定各碱性氮的相对含量。结果显示,含氮化合物共检出87个。其中碱性氮化合物共有64个,主要分为吡啶、喹啉、苯胺3类。非碱性含氮化合物23个,主要分为吡咯、吲哚、咔唑3类。根据碱性氮的组成性质,分别考察了剂油比、不同反应时间、反应温度对脱氮效果的影响。结果表明,当剂油比为3%、反应温度55℃、反应时间为10min,脱氮效果最好,页岩油中碱氮脱除率可达到82.1%。 相似文献
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The processability, rheology, and thermal, mechanical, and morphological properties of three different commercial poly(vinyl chloride) (PVC) compounds blended with postconsumer PVC bottles and PVC cables were examined with respect to the recycled PVC content. The addition of PVC bottle recyclates [recycled bottles (RBs)] into virgin PVC bottle (VB) and virgin PVC pipe (VP) compounds caused a progressive reduction in the average torque. No thermal degradation or color change in the RB‐blended PVC compounds used was detected through carbonyl and polyene indices from IR analysis. The rheological properties for VP compounds were more sensitive to RB addition than those of VB compounds. The extrudate swell ratio did not change with the RB content. The decomposition temperature for the VB and VP compounds increased at 60–80% RB, whereas the glass‐transition temperature was unaffected by the RB loading. The 20 and 80 wt % RB loadings were recommended for the VB and VP compounds, respectively, for the optimum impact strength, the blends showing ductile fracture with a continuous phase. At the optimum impact and tensile properties, introducing RB recyclates into the VB compounds gave better results than the VP compounds. The hardness and density of the VB and VP compounds did not change with the RB content. The RB property change was comparatively faster than that of recycled PVC pipes. Adding the PVC cable recyclate [recycled cable (RC)] to virgin PVC cable (VC) had no obvious effect on the torque value of the RC/VC blends. The decomposition temperatures of the RC/VC blends stabilized at 20–60% RC and tended to decrease at 80% RC. The ultimate tensile stress was improved by the addition of the RC compounds, whereas the hardness and density of the VC compounds were unaffected by the RC content. It was concluded that the optimum concentrations of PVC recyclates to be added to virgin PVC compounds were different from one property to another and also depended on the type of virgin PVC grade used. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2738–2748, 2003 相似文献
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《Journal of Adhesion Science and Technology》2013,27(12):1223-1253
The adhesion property between rubber compounds containing different types of adhesion promoters (resinous adhesion promoter (containing both methylene donor and methylene acceptor), cobalt salt and zinc borate) and different loading amounts of sulfur and brass-plated steel cords was investigated to understand the effect of sulfur loading in the rubber compounds on their adhesion characteristics to the brass-plated steel cords. The adhesion property of the rubber compounds to brass-plated steel cords was largely dependent on both the type of adhesion promoter and the loading amount of sulfur in the rubber compounds. The pull-out force of adhesion samples increased significantly with increasing loading amount of sulfur in the rubber compounds containing resinous adhesion promoter, whereas it decreased slightly with increasing loading amount of sulfur in rubber compounds containing cobalt salt or zinc borate. In humidity aging, the best adhesion retention was observed in the rubber compound containing zinc borate and low loading of sulfur. Regardless of the type of adhesion promoter, adhesion retention after thermal aging treatments improved with increasing loading amount of sulfur in the rubber compounds. The adhesion property was interpreted in terms of the interphases formed between the rubber compounds and the brass-plated steel cords as studied using Auger electron spectroscopy. 相似文献
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三种理气类中药挥发性成分的GC-MS分析 总被引:2,自引:0,他引:2
研究了三种(厚朴、檀香、木香)理气类中药挥发油的化学成分。用水蒸气蒸馏提取三种药材的挥发油,用GC-MS分离检测其化学成分,并结合气相色谱程序升温指数辅助定性确定出挥发油中的化学组分。鉴定出木香挥发油中29个成分(占挥发油总量的92.00%);厚朴挥发油中26个成分(占挥发油总量的91.88%);檀香挥发油中10个成分(占挥发油总量的94.51%),三中药物挥发油的主要成分大不相同。计算了各种化合物的保留指数,使用保留指数辅助定性鉴定出的化合物所占挥发油百分含量明显多于文献中所报道的数据。 相似文献