共查询到20条相似文献,搜索用时 125 毫秒
1.
对影响NH3/CO2吸收塔操作的主要因素进行了分析,并提出了稳定吸收塔操作方案和优化建议,使吸收塔运行达到最大可能稳定性. 相似文献
2.
对影响NH3/CO2吸收塔操作的主要因素进行了分析,并提出了稳定吸收塔操作方案和优化建议,使吸收塔运行达到最大可能稳定性。 相似文献
3.
对影响NH3/CO2吸收塔操作的主要因素进行了分析,并提出了稳定吸收塔的操作方案和优化建议。 相似文献
4.
5.
6.
某含硫瓦斯气及克劳斯尾气脱硫装置溶剂系统存在不合理现象:尾气吸收塔操作弹性小、溶剂使用量大、焚烧炉烟气二氧化硫排放浓度较高、装置能耗高.对该溶剂系统进行改造,将溶剂系统重新分配,提高溶剂系统的合理性.增加尾气吸收塔填料高度,提高尾气吸收塔操作弹性.改造后降低了贫液使用量,减少了装置蒸汽消耗,降低了装置焚烧炉烟气二氧化硫... 相似文献
7.
9.
用Aspen HYSYS软件模拟分析了富含CO_2天然气脱CO_2方法和工艺操作条件,如原料气处理量、吸收塔温度、吸收塔压力、吸收塔板数、再生塔温度对脱CO_2能耗的影响,并通过灵敏度分析比较了各操作条件对脱CO_2能耗的影响力大小。结果表明,富含CO_2天然气中CO_2浓度高,为满足净化要求需增大溶液循环量,由此带动公用工程消耗增加,脱CO_2能耗比常规天然气脱CO_2情况显著增加。在操作中,提高吸收塔温度、再生塔温度和原料气处理量均会引起脱CO_2能耗升高,而降低吸收塔压力、减少吸收塔板数可降低脱CO_2能耗。由于醇胺溶液再生耗能占脱CO_2总能耗绝大部分,在制定节能措施应重点考虑了再生塔温度控制,蒸汽、凝结水以及净化系统余压、余热资源的合理利用。 相似文献
10.
浮阀塔在碳化生产中的应用 总被引:2,自引:0,他引:2
该文介绍应用浮阀塔作碳化尾气吸收塔,以实现小氮肥厂生产达到水平衡的使用经验。该法具有流程短、投资少、操作弹性大以及维修操作费用低等特点。文章对碳化尾气吸收塔的反应原理及其塔型选型;浮阀塔的使用情况等作了叙述。 相似文献
11.
Power generation from fossil fuel-fired power plants is the largest single source of CO2 emissions. Post combustion capture via chemical absorption is viewed as the most mature CO2 capture technique. This paper presents a study of the post combustion CO2 capture with monoethanolamine (MEA) based on dynamic modelling of the process. The aims of the project were to compare two different approaches (the equilibrium-based approach versus the rate-based approach) in modelling the absorber dynamically and to understand the dynamic behaviour of the absorber during part load operation and with disturbances from the stripper. A powerful modelling and simulation tool gPROMS was chosen to implement the proposed work. The study indicates that the rate-based model gives a better prediction of the chemical absorption process than the equilibrium-based model. The dynamic simulation of the absorber indicates normal absorber column operation could be maintained during part load operation by maintaining the ratio of the flow rates of the lean solvent and flue gas to the absorber. Disturbances in the CO2 loading of the lean solvent to the absorber significantly affect absorber performance. Further work will extend the dynamic modelling to the stripper for whole plant analysis. 相似文献
12.
通过改造氨水管道和回流氨管道及液封,保证装置生产异常导致一吸塔超温超压时,回流氨和氨水能流入一吸塔. 相似文献
13.
根据吸收操作的特点,开发设计了一种内循环冷却吸收装置。该吸收装置在合成氨厂使用中显示出了较高的吸收效率,取得了较好的经济效益。试验证明,该装置有利于碳化尾气的处理,能解决碳化“水平衡”问题。 相似文献
14.
分析石灰水吸收法处理三氯乙醛尾氯所存在的问题,介绍小试,中试所用釜式间歇式酒清吸收装置和工业化塔式连续吸收装置试验运行情况。 相似文献
15.
文章针对铁钼法甲醛装置吸收塔因甲醛结晶聚合,导致塔釜堵塞、吸收塔运行状况变差、产品无法采出等现象,从甲醛工艺、设计、操作、结晶理论等多方分析产生原因,并提出优化操作、装置技改、增加电伴热数量等多途径解决措施,并明确了措施效果。 相似文献
16.
根据单一沥青生产厂的特点,采用油浸吸收一焚烧法新工艺处理氧化沥青尾气。除基本上消除了污染外,还可回收馏出油。结合操作实践,讨论了油浸吸收器直径、高度、吸收介质需要量及吸收器顶部温度的计算。 相似文献
17.
18.
19.
20.
Si-Jia Li Peng-Xin Wu He-Xiu Xu Yu-Long Zhou Xiang-Yu Cao Jiang-Feng Han Chen Zhang Huan-Huan Yang Zhao Zhang 《Nanoscale research letters》2018,13(1):386
We theoretically and experimentally proposed a new structure of ultra-wideband and thin perfect metamaterial absorber loaded with lumped resistances. The thin absorber was composed of four dielectric layers, the metallic double split ring resonators (MDSRR) microstructures and a set of lumped resistors. The mechanism of the ultra-wideband absorption was analyzed and parametric study was also carried out to achieve ultra-wideband operation. The features of ultra-wideband, polarization-insensitivity, and angle-immune absorption were systematically characterized by the angular absorption spectrum, the near electric-field, the surface current distributions and dielectric and ohmic losses. Numerical results show that the proposed metamaterial absorber achieved perfect absorption with absorptivity larger than 80% at the normal incidences within 4.52~25.42?GHz (an absolute bandwidth of 20.9GHz), corresponding to a fractional bandwidth of 139.6%. For verification, a thin metamaterial absorber was implemented using the common printed circuit board method and then measured in a microwave anechoic chamber. Numerical and experimental results agreed well with each other and verified the desired polarization-insensitive ultra-wideband perfect absorption. 相似文献