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阐述了将变脱脱硫液的高塔再生改为自吸空气喷射再生新工艺, 就喷射器和喷射再生槽的设计作了较详细的说明, 并对改造效果作了评价。 相似文献
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对净化变换气脱硫液的高塔再生改造为自吸空气喷射再生的工作原理、喷射器和喷射再生槽的设计计算作了较详细的说明,并对改造应用效果做出了评价。 相似文献
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0前言
喷射氧化再生技术以其生产强度高、设备容积小、投资费用低、节能效果好、操作简便等显著特点在大、中型化肥企业和煤气厂逐步得到推广应用。在氮肥行业的湿法脱硫中,几乎都采用了喷射氧化再生技术;焦化厂的焦炉煤气脱硫也大多采用湿法脱硫工艺,由于历史原因及行业习惯,以采用高塔强制通风再生技术的较多。高塔强制通风再生技术和喷射氧化再生槽再生技术各有利弊。高塔强制通风再生技术设备占地面积小, 相似文献
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栲胶脱硫及自吸喷射再生技术在我厂的应用黄水清,向刚,李雁翎,封伯承(驻昆解放军化肥厂云南开远市,661000)我厂一期合成氨原料气(半水煤气)原采用常压改良砷碱法脱硫,再生为高塔再生。1992年6月决定改为拷胶无毒脱硫,并把高塔再生改为自吸喷射再生。... 相似文献
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喷射氧化再生技术在合成氨脱硫系统的应用 总被引:1,自引:0,他引:1
阐述了在合成氨脱硫系统中将高塔再生改为自吸空气喷射氧化再生的新工艺,对喷射再生槽和喷射器的设计作了详细的说明。井对实际运行效果作了客观的评价。 相似文献
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为实现SO2的达标排放,针对山西焦化脱硫装置现状,介绍了不同系统目前采用的AS脱硫工艺、JH-H脱硫工艺、真空碳酸盐脱硫工艺及其实际净化后煤气中的H2S含量;简述了高塔再生工艺、喷射再生工艺及脱硫再生一体塔工艺的流程及特点;估算了不同再生工艺的投资、占地面积、运行费用等,确定了AS脱硫装置改造选用以碳酸钠为碱源,采用JH-H湿式氧化脱硫工艺和脱硫再生一体塔的再生流程。改造实施后,将能满足现有标准的脱硫要求,有效降低现有AS脱硫装置操作成本,减少SO2排放,具有可观的经济效益和社会效益。 相似文献
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自吸空气喷射氧化装置的设计计算及在脱硫再生中的应用 总被引:1,自引:0,他引:1
目前,脱硫液再生装置大体有三种流程:高塔再生,二是槽式再生池,再是喷射氧化槽。这三种流程均需要用空压机或罗茨风机送入空气进行氧化再生。因而工艺流程较为复杂,设备庞大,动力消耗较大。 相似文献
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简要介绍了国内焦化厂应用最多的HPF法脱硫工艺。针对HPF法脱硫工艺中高塔再生工艺、槽式喷射氧化再生工艺及一塔式脱硫三种工艺,从脱硫效果、占地、投资、运行费用、能耗及检修工作量等方面进行了对比分析,指出:在占地、运行费用极具受限的企业可选一塔式脱硫工艺;高塔再生工艺脱硫效果最稳定,首次投资稍高但其能耗、运行费及检修工作量均低于槽式喷射再生工艺,是目前HPF法脱硫工艺中最好的选择。 相似文献
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U. R. Shettigar R. Hughes 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1972,22(6):787-797
The intrinsic kinetics of carbon removal from a coked catalyst have been determined. Measurements have also been made of the transient temperature distribution inside a coked catalyst pellet during regeneration. These transient temperature distributions have been compared with predictions based on the sharp interface unreacted core model and on the finite thickness reaction zone model. The experimentally determined values of the maximum temperature rise were found to be in good agreement with the latter model but the sharp interface unreacted core model predicted temperature rises of a very much greater magnitude. 相似文献
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Regeneration of used nickel catalyst from a hydrogenation plant has been achieved by converting the nickel content of slurry
into NiO and Ni(OH)2, and the subsequent reduction of these compounds by hydrogen gas at temperatures of 450 C and 290 C respectively. A laboratory
and plant apparatus for reduction are designed. Activity of regenerated catalyst was measured in comparison with reference
catalyst (G15). Pretreatment of discarded catalyst prior to reduction is described. 相似文献
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Used frying oils were purified in a packed column using different amounts of silica gel (SG), aluminum oxide (AO), activated charcoal (AC), bentonite (B), magnesol XL (M), calcium carbonate (CC), zeolite (Z), bleaching earth (BE) and/or their binary, triple, and quaternary combinations. SG (15 g) improved total polar material (TPM) by 100 %, conjugated diene (CD) content by 84 %, and p-anisidine value (AV) by 104 %, while AO and M improved free fatty acid (FFA) contents by 103 and 105 %, respectively. On the other hand, AC and M bleached the color by 100 and 90 %, respectively. As the amount of adsorbent in the column increased, FFA, CD, AV, and color improved. When the amount of used sunflower oil (UO1) loaded in the column containing SL was increased, FFA, CD, AV and color values increased, while no change was observed in TPM up to 60 g of UO1. Loading UO1 at 150 °C in the column caused the absorbance values at 460 nm to decrease from 0.740 to 0.240, while the amount of adsorbed tocopherol increased compared to UO1 at 25 °C. The increasing number of adsorbents within the column further improved the physicochemical properties of UO1 when it was used 30 g. However, as the amount of different type of used oils (UO2, UO3 and UO4) was increased to 300 g, improvement ratios of all parameters decreased. 相似文献
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