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概述了氯碱盐泥渣在国内外的研究现状和综合回收利用最新的研究进展。对盐泥渣作为混料利用(建材、化肥、填料、吸附剂等),有效分离提纯(镁盐、钙盐、钡盐等)进行了归纳,并针对中国氯碱工业生产情况,对氯碱盐泥渣的综合利用进行了展望,提出了分步回收循环利用等相关建议。 相似文献
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为解决煤制天然气工艺过程中多效蒸发产生的盐泥的出路及利用问题,研究了盐泥入气化炉掺烧的可行性。采用干混法,将盐泥与块煤以0.3:100的质量比掺混入炉燃烧的试验。一周的试验结果表明,将盐泥均匀掺入气化炉内,变换入口合成气中甲烷体积分数提高了1个百分点以上,初步推断盐泥对气化炉内的甲烷化反应有催化作用;通过对渣水、煤气水、酚氨回收、污水处理系统相关指标分析,推断盐泥中的大部分盐以熔融态进入渣池系统,小部分盐可能随粗煤气带出,并随煤气水进入后续水系统。 相似文献
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针对废弃白土资源短缺和无法循环利用的问题,提出对志丹废弃白土进行改性,以提高废弃白土的重复利用。对此,以陕北志丹废弃白土为载体,采用离子交换法和等体积浸渍法对废弃脱色白土改性,然后通过LPG吸附脱硫试验对改性后的白土脱硫性能进行验证,并分别探讨了不同制备方法、负载不同金属离子和不同活性助剂浓度对改性白土脱硫性能的影响。结果表明,采用离子交换法负载金属对废弃白土进行改性得到的白土吸附剂的脱硫性能最佳;以浓度为0.1mol/L的Cu(NO3)2溶液作为活性助剂得到的改性白土脱硫效果明显。 相似文献
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介绍了盐泥的来源,探索了盐泥的处理方式,指出柔性填埋和回注盐井是当前可行性较高的两种方式。同时指出盐泥洗涤对于盐泥的柔性填埋和资源化利用具有非常重要的意义。盐泥多采用三层洗涤桶进行洗涤,洗涤的清液可以回注盐井。 相似文献
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随着油气田的不断开发,不可避免地会产生大量的废弃钻井泥浆。废弃泥浆经过处理,可脱出泥饼,而泥饼成分复杂,存在环保隐患。结合HL油田实际情况,通过X射线衍射仪方法分析出泥饼中固体颗粒成分,同时通过多参数分析仪、原子吸收光谱仪、BOD含量测定仪等研究废弃钻井液脱出泥饼的离子成分、含油性、聚合物含量、微生物含量等,分析了脱出泥饼的成分。结果表明:废弃泥浆脱出泥饼,其含水率较低,含油性较差,其主要以黏土矿物、石英、方解石等为主。泥饼滤液中钠、钙、钾、镁等阳离子含量高,含有少量的铅,并且微生物含量较少,不含聚合物。研究结果对进一步研究切实可行的废弃钻井液脱出泥饼综合利用方法、保护环境和资源利用具有重要意义。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉 相似文献
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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献
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Conclusions It is significant that the purification on a single passage of viscose through porous ceramic corresponds to the result of a two-stage filtration of it in industrial filter-presses with standard fillings.Kiev Combine. Kiev Technological Institute of Light Industry. Translated from Khimicheskie Volokna, No. 3, pp. 20–22, May–June, 1969. 相似文献
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A refined nonlinear value of the main parameter of a material, i.e., the elongation modulus versus the instant temperature value, was suggested for introduction into the computational algorithm of tempering stresses. 相似文献