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近年来,国内丁辛醇扩能加速,市场竞争形势加剧,随着产品自给率的大幅提升,丁辛醇市场未来走势值得关注。本文通过对丁辛醇国内外生产现状、下游消费、进口变化情况进行整理分析,并在市场回顾和近2年在建项目汇总基础上,对未来市场前景做出分析预测。 相似文献
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综述了丁辛醇生产方法,指出羰基合成法是目前生产丁辛醇的主流工艺;分析了国内外生产能力的现状,预测了今后供需的发展前景;分析指出2014年国内丁辛醇可实现自给自足,同时生产企业将由于原料成本不同形成3个梯队,竞争力差距逐渐明显。 相似文献
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通过对国外与国内市场现状的分析,预测了世界特别是中国未来供需状况;分析了国内丁辛醇长期和短期价格数据,预测了未来价格走势;重点用定量分析方法,分析和评价了在目前情况下建设丁辛醇装置的经济性;对比分析了金属铑价格、原油价格、股价走势,测算了金属铑价格大幅波动给丁辛醇装置效益带来的影响;提出了短时间内建设多套丁辛醇装置存在一定风险,建议投资者谨慎。 相似文献
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文章主要对丁辛醇的生产方法进行详细的阐述及对比,并对羰基合成法的催化剂的发展进行了研究。对丁辛醇的国内外发展现状、市场需求、前景进行了论述,并指出存在的问题即采取的措施建议。 相似文献
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介绍国内主要上市轮胎公司的基本概况,对其2003年第3季度为止的主要财务指标进行对比分析,并运用企业竞争力理论对企业在财务管理和经营管理方面存在的风险进行预测,为国内轮胎企业提高综合竞争力、参与国际市场竞争提供理论支持和指导。 相似文献
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MDI的生产及市场 总被引:2,自引:0,他引:2
卞爱芳 《化学工业与工程技术》2002,23(1):24-26
介绍了国内外MDI的生产、应用及市场情况 ,并对影响MDI市场的关键因素进行了分析 相似文献
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采用原子转移自由基聚合(ATRP)合成了分子量与设计分子量(2000)大小相符的聚丙烯酸异辛酯,再以N-甲基单乙醇胺作为亲核试剂,对活性端基溴进行亲核取代,得到了分子量可控、分子量分布较窄的线型端羟基聚丙烯酸异辛酯。以此为原料与甲苯二异氰酸酯(TDI)反应,制备得到了聚丙烯酸异辛酯-氨酯。利用核磁共振谱(1HNMR)、差示扫描量热仪(DSC)、热重示差扫描量热仪(TGA)对合成的端羟基聚丙烯酸异辛酯及聚丙烯酸酯异辛酯-氨酯的结构、热稳定性等进行了表征。结果表明,利用端羟基聚丙烯酸异辛酯成功地制备了聚丙烯酸异辛酯-氨酯,由凝胶渗透色谱仪(GPC)测得其分子量为10200,玻璃化转变温度为-54℃,是一种新型的丙烯酸酯与聚氨酯的共聚物。 相似文献
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《Food and Bioproducts Processing》2014,92(3):298-308
In these studies concentrated sugar solutions of barley straw and corn stover hydrolysates were fermented using Clostridium beijerinckii P260 with simultaneous product recovery and compared with the performance of a control glucose batch fermentation process. The control glucose batch fermentation resulted in the production of 23.25 g L−1 ABE from 55.7 g L−1 glucose solution resulting in an ABE productivity and yield of 0.33 g L−1 h−1 and 0.42, respectively. The control reactor (I) was started with 62.5 g L−1 initial glucose and the culture left 6.8 g L−1 unused sugar due to butanol toxicity resulting in incomplete sugar utilization. Barley straw (BS) hydrolysate sugars (90.3 g L−1) resulted in the production of 47.20 g L−1 ABE with a productivity of 0.60 g L−1 h−1 and a yield of 0.42. Fermentation of corn stover (CS) hydrolysate sugars (93.1 g L−1) produced 50.14 g L−1 ABE with a yield of 0.43 and a productivity of 0.70 g L−1 h−1. These productivities are 182–212% higher than the control run. The culture was able to use 99.4–100% sugars (CS & BS respectively) present in these hydrolysates and improve productivities which were possible due to simultaneous product removal. Use of >100 g L−1 hydrolysate sugars was not considered as it would have been toxic to the culture in the integrated (simultaneous fermentation and recovery) process. 相似文献
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对中国烧碱竞争态势进行了研究和分析。认为:随着烧碱装置扩建热潮的继续、PVC生产和需求的波动以及氯与碱需求的不平衡,烧碱市场竞争日益激烈。 相似文献
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N. M. Murashova S. Yu. Levchishin E. V. Yurtov 《Journal of surfactants and detergents》2014,17(6):1249-1258
The effect of bis-(2-ethylhexyl)phosphoric acid (DEHPA) on the region of existence, conductivity and structure of sodium bis-(2-ethylhexyl)phosphate (NaDEHP) microemulsion has a dual nature and depends on DEHPA concentration. In the system NaDEHP–DEHPA–kerosene–water, the narrowing of the microemulsion region is observed with DEHPA concentration in the organic phase growth from 0.1 to 0.5 mol/L. The increase of DEHPA concentration in the organic phase from 0.1 to 0.4 mol/L leads to the reduction of electrical conductivity of the microemulsions. Based on the conductivity and viscosity measurements, we suppose the transition from reverse microemulsion with isolated droplets to percolate microemulsion at volume fraction of water 0.18 ( \(W = C_{{H_{2} O}} /C_{\text{NaDEHP}}\) = 8). Droplet size of the microemulsions increases linearly with W growth. The rise of DEHPA concentration in the organic phase from 0.1 to 0.3 mol/L causes the growth of the coefficient at W in the equation d = kW + b from 0.038 to 0.249, i.e., it increases the slope of the lines. In contrast, DEHPA introduction at the concentration 0.1 mol/L (in the organic phase) leads to the expansion of the microemulsion region, does not affect the conductivity and decreases the coefficient at W. The rate of copper recovery into the microemulsion increases considerably with the rise of DEHPA concentration from 0.0 to 0.3 mol/L; no dual effect is observed. The following composition of the microemulsion for non-ferrous metals leaching is recommended: C NaDEHP = 1.6 mol/L, C DEHPA = 0.3 mol/L (in the organic phase); W = 8–32. 相似文献