共查询到19条相似文献,搜索用时 109 毫秒
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针对KL-15型制氧制氮车操作过程中,在规定纯度下难以达到并维持最大产量的状况,以设备制氧过程为例,对在操作上可应用的微机提示系统进行了初步探讨,此提示系统可指导操作者进行及时、准确、迅速的操作;并对微机能提示的调整方法、数据的具体处理方法进行了介绍;最后分析了此提示系统的设计思想和程序框图。图2。 相似文献
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<正>1984年11月1~3日,在四川简阳召开了四川空分设备厂研制的40~50升/时制氧制氮车和1200升液氧槽车两项产品设计定型技术鉴定会。有29个单位派人参加了会议。会议通过技术报告,样机参观,并经认真讨论后认为:四川空分设备厂在驻厂军代表配合下,用四年时间研制出40~50升/时车载制氧制氮设备及1200升液氧槽车,取得了可喜成果。在制氧制氮设备上采用了附加高压制冷循环的低压流程方案,这对车载制氧制氮设备的制造创出了一条新路。制氧 相似文献
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某小型制氧制氮设备由于流程设计上存在的不足 ,存在冷损大、产品浪费大和氮纯度不及时反映工况等问题 ;针对问题 ,提出了改进措施 相似文献
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小型移动式制氧制氮装置的许多部位易堵塞,加温吹除工作很重要。本文介绍了加温操作中应注意的几个问题,例如加温操作方法的确定、如何防止出现死区,以及合理选择加温时机等。 相似文献
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通过对一种新颖的高压氮膨胀液化液氧泵内压缩常温分子筛净化空分流程的组织构思和对换热、制冷、精馏系统全面的计算,为开拓化工企业高压用氧(9.5MPaA)的新型空分流程探索出了一条可行的路。根据计算,新流程和原有的高压氮节流液化液氧泵内压缩切换式换热器冻结空分流程相比,氧提取率可提高9%,单位氧能耗可下降2%,流程组织大大简化,高压氧的生产安全可靠,显示了新流程的生机。 相似文献
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全低压大型制氧机“快速制氧”操作法 总被引:1,自引:1,他引:0
介绍了“快速制氧”的原理和制氧机流程的改造。分析了氮气回收型和氮气不回收型两种“快速制氧”操作的启动方法和操作要点 ,阐述了“快速制氧”的特点及在制氧机启动和运行中的作用 相似文献
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This study investigated the effects of different operational strategies for nitrogen removal by aerobic granules with mean granule sizes of 1.5mm and 0.7 mm in a sequencing batch reactor (SBR). With an alternating anoxic/oxic (AO) operation mode without control of dissolve oxygen (DO), the granular sludge with different size achieved the total inorganic nitrogen (TIN) removal efficiencies of 67.8-71.5%. While under the AO condition with DO controlled at 2mg/l at the oxic phase, the TIN removal efficiency was improved up to 75.0-80.4%. A novel operational strategy of alternating anoxic/oxic combined with the step-feeding mode was developed for nitrogen removal by aerobic granules. It was found that nitrogen removal efficiencies could be further improved to 93.0-95.9% with the novel strategy. Obviously, the alternating anoxic/oxic strategy combined with step-feeding is the optimal way for TIN removal by granular sludge, which is independent of granule size. 相似文献
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现代空分设备由于生产工艺限制造成停车后恢复过程中出氩时间晚于氧氮。介绍了如何利用现有管网、设备,从而达到氧氮氩同时外供,为后续炼钢、炼铁恢复生产节省了时间。 相似文献
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安钢制氧厂球罐区氧气管道泄漏,影响了正常供氧并威胁安全生产。文章详细介绍了氧气管道泄漏的应对措施以及检修过程中的停送气方案、施工方案和安全措施,彻底消除了泄漏隐患。 相似文献
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Two new applications for sequence treatment of mature (stabilized) landfill leachate, that is, cationic resin followed by anionic resin (cationic/anionic) and anionic resin followed by cationic resin (anionic/cationic), are employed and documented for the first time in the literature. Response surface methodology (RSM) concerning central composite design (CCD) is used to optimize each treatment process, as well as evaluate the individual and interactive effects of operational cationic resin dosage and anionic resin dosage on the effectiveness of each application in terms of color, chemical oxygen demand (COD), and NH(3)-N removal efficiency. A statistically significant model for color, COD, and NH(3)-N removal was obtained with high coefficient of determination values (R(2)>0.8). Under optimum operational conditions, the removal efficiency levels for color, COD, and NH(3)-N are 96.8%, 87.9%, and 93.8% via cationic/anionic sequence, and 91.6%, 72.3%, and 92.5% via anionic/cationic sequence, respectively. The experimental results and the model predictions agree well with each other. 相似文献
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《Separations Technology》1994,4(2):93-103
We propose a complementary pressure swing adsorption (CPSA) process consisting of four beds for separating air into enriched oxygen and nitrogen. Simulation results showed that the CPSA process performed better than either the oxygen process or the nitrogen process. Using zeolite 5A and 4A as adsorbents, the mole fraction of oxygen and argon in the enriched oxygen may be as high as 99.57% (at 34.44% recovery), and the purity of the enriched nitrogen about 98% (at 47.86% recovery). For producing enriched oxygen of 80–90% purity, a modified CPSA process is suggested. The relationships between production rate, purity, and oxygen and nitrogen recoveries are discussed. 相似文献
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分析了提高膨胀机膨胀量的可行性,详细介绍了增加膨胀量的方法以及获得的效果,经实际运行测试,改造后液氧产量翻番。 相似文献