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大规模制备
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    On this foundation, Thestudy focused on the control methods and the influencing factors of thesupport pore structure, the membrane pore structure , the membranethickness and the membrane integrity, in order to establish foundationfor the industrialization preparation of high quality porous ceramicsinorganic membranes.
    在此基础上,着重研究了支撑体孔结构、膜孔结构、膜厚度以及膜完整性的影响因素及控制方法,为工业化大规模制备高质量的多孔陶瓷无机膜奠定基础。
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    The solubilized carbon nanotubes were well characterized and their solubilities in a variety of organic solvents as well as the percentage content of tubes in the solubilized samples have been determined.
    我们提出了一种大规模制备可溶性碳纳米管的有效而简便的方法,并对制备的可溶性碳纳米管进行了表征,同时测定了可溶性碳纳米管在多种有机溶剂中的溶解度以及碳纳米管在可溶性碳纳米管中的含量。 我们的工作解决了碳纳米管在聚合物中的分散问题,相关隐身特性研究正在进行之中。
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An external circulating fluidized bed reactor and a large scale apparatus for immobilized enzyme preparation with a capacity of 120 L per hour have been developed and applied in this study.The bed expansion of the bioreactor also follows R-Z relationship,and the proposed mixing model gives good agreement with the experimental results.The ethanol fermentation kinetics can well be described by a modified Monod equation.A pilot scale three-stage-in-series external circulating fluidized bed reactor with a total...

An external circulating fluidized bed reactor and a large scale apparatus for immobilized enzyme preparation with a capacity of 120 L per hour have been developed and applied in this study.The bed expansion of the bioreactor also follows R-Z relationship,and the proposed mixing model gives good agreement with the experimental results.The ethanol fermentation kinetics can well be described by a modified Monod equation.A pilot scale three-stage-in-series external circulating fluidized bed reactor with a total effective volume of 665 L has been continuously operated for three months to produce 8~10%(v/v)ethanol broth from non-sterilized diluted cane molasses using immobilized cells entraped in spherical alginate particles.Ethanol producivity and conversion yield were 12 kg ethanol/m~3 reactor/h and>92%,respectively.

针对固定化增殖细胞发酵酒精的特点,研制与开发了一种新型外循环流化床生物反应器和大规模制备固定化细胞颗粒的方法和装置。考查了固定化细胞颗粒流化特性,外循环速度对液相停留时间分布的影响,宏观发酵动力学及固定化增殖细胞发酵酒精的特点及历程。设计并完成了665L 中试规模的放大试验,连续运转近3个月。实验结果表明:以未处理无灭菌的废甘蔗糖蜜为原料,用海藻酸钙包埋的固定化酵母颗粒连续发酵酒精,终酒精浓度为8~10%(v/v),对糖收率>92%,反应器生产能力达12kg/(m~3·h)。

The key technology for titanium resources utilization includes large scale preparation of titanium-rich material,the chlorination process for titanium tetrachloride from the titanium-rich materials containing high content of calcium and magnesium and the oxidation process for titania of rutile. The status of the comprehensive utilization technology is reviewed and analyzed. In addition, the technology of rotary hearth furnace to produce high-grade titanium slag, the technology of fast-fluidized bed to produce...

The key technology for titanium resources utilization includes large scale preparation of titanium-rich material,the chlorination process for titanium tetrachloride from the titanium-rich materials containing high content of calcium and magnesium and the oxidation process for titania of rutile. The status of the comprehensive utilization technology is reviewed and analyzed. In addition, the technology of rotary hearth furnace to produce high-grade titanium slag, the technology of fast-fluidized bed to produce titanium tetrachloride,and the novelty idea to solve the scaling and clogging problems of the oxidation furnace are also introduced.

中国钛资源综合利用的关键技术包括大规模制备富钛料技术、高钙镁富钛料直接氯化制备TiCl4技术及TiCl4氧化制备金红石型钛白粉技术。分析了国内外钛资源综合利用技术现状及发展趋势 ,并介绍了转底炉制备高钛渣技术 ;快速流化床氯化制备四氯化钛技术以及解决氧化反应器结疤问题的新思路。

Nanometer TiO_(2)powder is a new kind of inorganic functional material,its preparation and application have been paid more and more attention.TiOSO_(4) and H_(2)TiO_(3) are intermediate products from the production of titanium dioxide by sulfuric acid method.These raw materials are widely available,cheap and ready for commercial production in large scale.The characteristics of precipitation method,colloidal chemical method and hydrothermal method for producing nanometer TiO_(2) are emphatically introduced,and...

Nanometer TiO_(2)powder is a new kind of inorganic functional material,its preparation and application have been paid more and more attention.TiOSO_(4) and H_(2)TiO_(3) are intermediate products from the production of titanium dioxide by sulfuric acid method.These raw materials are widely available,cheap and ready for commercial production in large scale.The characteristics of precipitation method,colloidal chemical method and hydrothermal method for producing nanometer TiO_(2) are emphatically introduced,and the existing problems and solutions in the commercial production are discussed.

纳米二氧化钛是一种重要的新型无机功能材料,其制备及应用愈来愈受到重视。以硫酸法生产二氧化钛的中间产物———硫酸氧钛和偏钛酸为原料制备纳米二氧化钛粉体,具有原料来源广泛、价格低廉、有利于工业化生产等优点,是大规模制备纳米二氧化钛粉体的重要途径。重点对沉淀法、胶溶法、水热法制备纳米二氧化钛的工艺及特点进行了介绍,对工业化生产存在的问题及解决方法进行了讨论。

 
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