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催化油浆因具有丰富的碳源优势,已经应用于石油化工领域及其他经济领域,但实现其经济价值的前提是必须进行脱固处理。以大庆某炼厂催化油浆为研究对象,采用超声辅助化学沉降法对催化油浆进行脱固处理,主要考察了剂油比、温度、超声时间等因素对催化油浆脱除效率的影响,判断超声与化学沉降法组合应用是否发挥协同作用,加强脱除效果。研究结果表明:采用环己烷和聚丙烯酰胺为化学助剂,丙三醇水溶液为水相溶液的化学沉降法对催化油浆进行脱除固体颗粒实验时,催化油浆中催化剂颗粒的脱除率为89%;化学沉降法和超声联用,在超声频率40 k Hz,超声时间10 min条件下,催化油浆的脱除率可达到94%以上。这说明超声辅助作用能够强化催化油浆的脱除效果。 相似文献
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介绍了目前国内外催化油浆净化技术的研究现状,主要介绍了沉降分离、过滤分离、静电分离、离心分离和高温陶瓷膜错流过滤方法在脱除油浆催化剂颗粒方面的应用,对比分析了各种方法的优缺点,对催化油浆净化技术的发展方向进行了展望。 相似文献
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催化油浆是催化裂化工艺过程中产生的一种副产品,由于其含有较多的催化剂粉末,进一步加工利用受到限制,一般作为燃料油出厂,利用价值较低。为了提高催化油浆的加工利用价值,需要对其中含有的催化剂粉末脱除。介绍了脱除催化油浆中催化剂粉末的技术措施,包括过滤分离法、静电分离法、旋流分离法、沉降助剂法等,分析了各种方法的优缺点,对催化油浆中催化剂粉末分离方法的研究方向及前景进行了展望。 相似文献
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催化裂化油浆分离技术评述 总被引:2,自引:0,他引:2
综合利用催化裂化油浆必须突破两个关键技术,即高效分离掉催化裂化油浆中的催化剂粉末和根据要开发的产品分别脱除相关的胶质、沥青质、烯烃和稠环芳烃.文章介绍了催化裂化油浆澄清技术和脱剂油浆组分分离的常用方法和技术进展,并对这些分离技术的优缺点做了评述. 相似文献
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介绍了催化裂化油浆的性质和组成特点,油浆中脱除催化剂颗粒的常用分离技术与现状,着重对油浆的加工组合工艺和综合利用进行了综述。最后对催化裂化油浆的综合利用进行展望。 相似文献
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安庆石化催化油浆分离及利用技术分析 总被引:4,自引:0,他引:4
论述了催化油浆分离工艺的相关技术,并提出了合理经济地利用油浆资源的想法和建议.结合安庆分公司自身的特点阐述了催化油浆从澄清到分离再到深加工的全过程. 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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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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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