硝胺推进剂燃烧性能的改善

选用了一种新型复合含能燃烧催化剂——ＰＮＴＯ／β－Ｃｕ／ＴＣＢ来改善硝胺推进剂的燃烧性能。结果表明这种催化剂的催化效果很好,在本试验配方条件下,硝胺推进剂常温下在７．８～１７．７ＭＰａ压力范围内,压力指数降为０．３７８,１７．７ＭＰａ压力下燃速升为２８．３２ｍｍ／ｓ。     

新型高效催化剂气相聚合制备聚乙烯

综合报道了新型乙烯气相聚合ＭＧ型催化剂的制备及其聚合反应性能。研究了采用浸渍反应法制备含ＴｉＣｌ４／ＭｇＣｌ２／ＺｎＣｌ２／ＳｉＯ２醇／Ａｌ（ｉ－Ｂｕ）３的ＭＧ－４型高效催化剂。在压力１．０ＭＰａ下,乙烯聚合催化效率高达４４５￣８８４ｋｇＰＥ／ｇＴｉ,制得了表观密度≥ｇ／０．３７／ｃｍ＾３、重均颗粒分布（２０￣２００目）≥９７．７％、颗粒状态良好的聚乙烯。用ＤＳＣ、ＳＥＭ、ＷＡＸＤ对聚合产物进行了     

滴流床加氢法生产木糖醇的研究

本文对滴流床中压加氢生产木糖醇的工艺进行了研究，反应温度１２０℃，氢压４．０ＭＰａ，表现液速０．５ｍｍ／ｓ￣２．０ｍｍ／ｓ，Ｒａｎｅｙ－Ｎｉ颗粒催化剂表层活化，床层内径１０ｍｍ。对平均粒径０．４７及０．６７ｍｍ的催化床层在低液速区反应特性进行了初步探讨。用简化模型计算的床层宏观效率因子比实际工业鼓泡床高８￣９倍。其值随液速降低而上升，并存在多稳态的现象，与床层部分润湿现象一致。     

均匀设计在推进剂配方优化中的应用

采用均匀设计对双基推进剂配方中复合燃烧催化剂φ－Ｐｂ／β－Ｃｕ／ＴＹＣＢ的配比进行优化。用螺压成型工艺制备配比不同的推进剂样品,用回归分析方法处理试验数据,建立了铅、铜盐和炭黑三者与燃速的线性回归方程,并进行了显著性检验。结果表明均匀设计在推进剂配方优化中的应用是可行的。φ－Ｐｂ＝３．０％、β－Ｃｕ＝０．６％、ＴＹＣＢ＝０．４％。双基推进剂表现出较好的燃烧性能,燃速随压力变化很小。     

NC型φ1200轴一径向氨合成塔的新设计

φ１２００ＮＣ型轴一径向民人件采用以径向流为主的催化剂筐结构，使全塔阻力降至０．２￣０．３ＭＰａ，不仅节省循环功耗，而且还为装填小颗粒，高活性催化剂提供条件，确保全塔生产能力≥３２０ｔ／ｄ，氨净值达到１５％。该内件还采用多层组合结构，层间换热器和气体分布器均可方便地装入或吊出，因而装卸催化剂和维修检查均较方便。该内件还与系统工艺流程的设计相配套，能副产１．３或２．４５ＭＰａ中压蒸汽０．９￣１．０ｔ     

新型催化剂PCeHM在甲醇胺化反应中的应用

对ＰＣｅＨＭ、Ａ－６及ＫＤＣ－６催化剂在常压及２．０ＭＰａ下进行了对比实验，结果表明ＰＣｅＨＭ在常压下的催化性能优于目前使用的催化剂，在２．０ＭＰａ下的催化性能与Ａ－６及ＫＤＣ－６的催化性能相当。     

从聚酯残渣R－1中回收有用成份粗DMT

以聚脂（ＰＥＴ）生产中的残渣Ｒ－１为原料，以Ｃｏ￣（２＋）、Ｍｎ￣（２＋）、Ｃａ￣（２＋）等为催化剂，在温度为２７０－２９０℃、压力为０．０８ＭＰａ下，热解回收了以ＤＭＴ为主的有用成份“粗ＤＭＴ”。     

钼系复合缓蚀剂软水水质稳定的动态模拟研究

通过现场动态模拟试验,研究了钼－膦－锌－唑复合配方对马钢公司软水的水质稳定效果。在循环水总硬度（以ＣａＣＯ３计）１０￣２０ｍｇ／Ｌ,ＭｏＯ４＾２－含量１３￣２０ｍｇ／Ｌ、有机磷１５ｍｇ／Ｌ、Ｚｎ＾２＋４ｍｇ／Ｌ条件下,试管平均腐蚀率０．００３６ｍｍ／ａ,平均污垢米附速度为７．０ｍｃｍ,极限污垢热阻接近零。循环不中配方组分性质稳定。试验同时对预膜及补药方式进行了讨论。研究表明,钼系复合配方对闭路软水     

难降解高浓度有机废水催化湿式氧化净化技术：I.高活性,高稳定性的…

通过对金属组份对载体影响及催化剂制备方法等因素的考察，研制出性能优良的催化湿式氧化催化剂，用于治理焦化厂蒸氨、脱酚前的含ＣＯＤｃｒ６３０５ｍｇ／Ｌ及ＮＨ３－Ｎ３７７５ｍｇ／Ｌ的高浓度焦化废水。在２８０℃，８．０ＭＰａ，液体空速＝１．０ｈ＾－１条件下，对ＣＯＤ及ＮＨ３－Ｎ的去除率分别为９９．５％及９９．９％。通过１０００ｈ催化剂寿命考察试验，确定催化剂稳定性良好，能够在水热条件下抗酸、碱腐蚀，长期使     

ZA23高铝锌基合金的铸造

采用普通金属材料的精炼和变质处理工艺，在燃油坩埚炉中熔炼出了２１％￣２７％Ａｌ；２．０％￣３．０％Ｃｕ；０．０１％￣０．０３５％Ｍｇ；杂质≤０．１９％，砂型铸态机械性能；σｂ：４１０￣３６２ＭＰａ；σｓ：３６９￣３１６ＭＰａ，δｓ：１１．３％￣２．５％；ＨＢ：１０９￣９９的ＺＡ２３高铝锌基合金；用粘土砂、手工造型、Ｖ／Ｆ判据和相应的铸造工艺解决了该合金易产生底缩和二次缩孔的难题生产出价值２．９万多     

包覆奥克托今颗粒的燃烧性能

采用聚合物材料和一些键合剂对ＨＭＸ表面进行了包覆,并研究了包覆材料对ＨＭＸ燃烧性能的影响,试验表明,聚合物材料将降低度系数而不盼子键合剂对ＨＭＸ燃性能的影响不大。     

金属氧化物对HNIW单元推进剂燃烧的催化研究

对六硝基六氮杂异伍兹烷 (HNIW)的催化燃烧进行了初步的实验探讨 ,实验结果表明 ,HNIW单元推进剂的燃烧速度是 HMX单元推进剂燃烧速度的 2倍左右 ,HNIW单元推进剂的燃烧速度随着压力的增加而直线增加 ,其燃速压力指数为 0 .846 ,通过加入金属氧化物可使 HNIW单元推进剂的燃烧速度发生变化 ,但对其燃速压力指数影响不大     

程序控制开裂棒状发射药的燃烧性能

应用密闭爆发器试验，对程序控制开裂棒状（ＰＳＳ）发射药的燃烧性能进行了研究。发现采用不同端封剂的ＰＳＳ发射药的燃烧性能有着明显的差异。研究结果表明，提高端封层的抗燃气冲击性能是研制ＰＳＳ发射药成功的关键之一。     

Soot in Diesel Combustion Systems

Diesel soot, one of the major environmental pollutants, is the finer particle produced during the high temperature pyrolysis or combustion of diesel fuel. Advances in the understanding of soot formation in diesel combustion systems during the recent decades are surveyed in this paper. It is universally accepted that soot formation steps can be summarized as (1) formation of molecular precursors of soot, (2) nucleation or inception of particles from heavy polycyclic aromatic hydrocarbon molecules, (3) mass growth of particles by addition of gas phase molecules, (4) coagulation via reactive particle‐particle collisions, (5) carbonization of particulate material, and, finally, (6) oxidation of polycyclic aromatic hydrocarbons and soot particles. Several mathematical models of diesel soot formation available in the related literature are offered in this review, which are Hiroyasu's model, Moss' model, Tesner's model, Lindstedt's model, and detailed soot formation models. Experimental and numerical studies currently play an important role in exploring the diesel soot formation mechanism. The success of such studies relies on the development of both diagnostic techniques to increase the quality of experiments and mathematical models for numerical simulations.     

Combustion of Propellants with Ammonium Dinitramide

This paper reports a series of experiments involving ammonium dinitramide (ADN), a new energetic oxidizer of potential use in composite solid propellants. The experiments include (a) self‐deflagration of pressed pellets of ADN; (b) combustion of sandwiches with ADN laminae on both sides of a binder lamina that is either “pure” or filled with particulate oxidizer and other additives; and, (c) combustion of propellants with a bimodal oxidizer size distribution, wherein, combustion of coarse ADN and fine AP (ammonium perchlorate) and vice versa were used, in addition to mixtures of coarse ADN and AP, fine ADN and AP, and all‐ADN or all‐AP formulations.     

硝胺单元推进剂的燃烧性能研究

测定了HMX、RDX和CL-20三种硝胺的热分解行为,对硝胺单元推进剂的能量进行了理论计算,并采用固体推进剂燃烧过程测定系统对硝胺单元推进剂的燃烧性能进行了测定,分析了硝胺单元推进剂的燃烧机理.测试结果表明,CL-20的热分解温度较低,其能量较高,燃烧速度约为mMX的2倍,压力指数与HMX、RDX的压力指数相当.     

Methane Combustion in the Presence of Zirconia-Based Catalysts

The influence of “superacidic” modification has been shown to enhance the methane combustion activity of ZrO₂ at 800 °C. Modification with SO₄ ²⁻, Fe/Mn/SO₄ ²⁻ and MoO₃ has been investigated, with the latter showing the most marked effect although this is a critical function of loading. Ceria–zirconia catalysts are also active, although the compositions studied are not as effective as 5 wt% MoO₃/ZrO₂ which shows a greater mass normalised activity than Fe₂O₃.     

Process Simulation of Combustion Drying with Simprosys Software

This article presents a software tool, Simprosys, and its newly added burner unit operation model for process modeling and simulation of drying. Combustion generation using the burner unit operation is described briefly. Humid gas properties of combustion are compared and found to be different from those of air. The effects of pressure on both air and combustion humid gas properties are investigated. It is found that both combustion and air could be significantly different in their moisture carrying capability when the operating pressure is different from standard atmospheric pressure, especially for some vacuum drying cases where the operating pressure is well below atmospheric pressure. A model combustion drying flowsheet is simulated with Simprosys 3.0 and simulation results are presented and discussed.