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1.
废热锅炉是Cassle合成氨技术中的关键设备,本文以某改造项目Cassle技术废热锅炉为研究对象,阐述了废热锅炉的结构特点,结合化工厂反馈的问题,针对关键工序提出了改进措施,为制造类似结构和要求的产品积累了宝贵经验。 相似文献
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《International Journal of Hydrogen Energy》2020,45(1):230-262
The Co-Current reactor gasifier is a promising technique, owing to its good performance and less residue content. Even though it can be used only for low moisture feedstock, it is needed improvement by incorporating modifications in the design of reactor, feeding system, air supply system, preheating air or feedstock, discharge system, recirculation technique, and co-gasification. Many of the researchers found that various improvement methods have been done to improve the performance of the gasifier at different operating condition. Therefore, in this paper a detailed review has been made to study about that developments of Co-Current gasifier and their effects on the performance of the gasifier. Further to improve the performance a suitable method for the gasifier is identified. A comparision with various methods reveals that design modification showed better performance, higher producer gas yield and less pollution. 相似文献
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《International Journal of Hydrogen Energy》2020,45(13):7641-7646
The depletion of non-renewable energy resources such as fossil fuels urge the human society to concentrate more on renewable energy including production of biological hydrogen (H2) from algae. Biological hydrogen or biohydrogen is one of the cleanest and efficient alternate energy sources for human needs. It is a well-known fact that hydrogenase (H2ase) will work in anoxic condition which is the key enzyme in H2 generation from photosynthetic algae or advanced plants. Keeping in view the significance of anoxic condition, the present study deals with screening of three oxygen scavengers/removers such as sodium sulfite (Na2SO3), sodium metabisulfite (Na2S2O5) and sodium dithionite (Na2S2O4) individually along with universal tris-acetate-phosphate (TAP) medium for improvement of biohydrogen production in green alga Chlorococcum minutum (C. minutum) under in vitro conditions. To the best of our knowledge, for the first time improvement in hydrogen production was achieved using sodium sulfite and sodium metabisulfite individually with algal cultures. Efficient photobiological H2 production was observed at 24 h in C. minutum in the presence of all the three oxygen scavengers when compared to untreated samples via limiting the oxygen levels but output was more with sodium sulfite treatment. Particularly 0.8 mM Na2SO3 is best for enhancement of H2 production at 24 h when compared to other two scavengers and this may be due to high oxidation state and more electron negativity of this compound. Apart from augmentation in H2 production in this species, present screening may also be helpful for researchers working in the area of biological H2 generation. 相似文献
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针对沙曲选煤厂、旧系统存在问题,对选煤工艺改造方案进行探讨,即采用预脱泥有压两产品重介旋流器主再洗、毛煤动筛排矸、浮选精煤加压过滤机回收、尾煤压滤回收工艺.通过试运行,设备状况良好,基本达到设计生产能力. 相似文献
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霍州煤电集团辛置洗煤厂,于2002年经过重介技术改造,各项指标均达到规定要求,但随着重介生产能力的逐渐提高,煤泥水系统、澄清工艺已无法满足重介分选时要求的清水作业.因此,经过分析工艺要求和生产现状,提出改造方案,改进了煤泥水系统工艺流程.改造后,满足了重介分选清水作业的要求,入洗能力显著提高. 相似文献
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针对在偏载受力状况下单体液压支柱漏液问题,对其构造进行了分析、改进,合理地解决了漏液问题,保证工作面的正常生产。 相似文献
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介绍了西曲矿选煤厂对原来分流机构的改造,将原来的分流箱改成了分流管,取得了显著效果,解决了因为分流箱执行机构动作不灵而致使分流效果不佳的问题。 相似文献
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