重油催化裂化油浆系统设备冲刷隐患分析

通过对重油催化裂化装置油浆组分中催化剂颗粒的粒径、含量等测定分析,找出了设备受到冲刷磨损的原因,并对反应装置中的旋风分离器进行了技术改造,消除了事故隐患,确保了安全生产。     

生命

生命,也许是宇宙之间唯一应该受到崇拜的因素。生命的孕育、诞生和显示本质是一种无比激动人心的过程。生命像音乐和画面一样暗自挟带着一种命定的声调或血色,当它遇到大潮的袭卷,当它听到号角的催促时,它会顿时抖擞,露出本质的绚烂和激昂。当然,这本质更可能是卑污、懦弱、乏味的;它的主人并无选择的可能。     

海油陆采平台冲刷防护及断面稳定性试验解析

受时代发展、科学技术发展的影响,人们在生活中对于各种能源的需求逐渐提升。现阶段陆地中的油气资源在不断的开采下已经逐渐枯竭,因此对于油气的开采逐渐由陆地转为海洋领域。通过勘察得知,在一些距离较近的浅海区具有油田资源,但是因为其区域不能设置采油平台进行油田的开采,主要以海油陆采的形式进行油田的开采。但是建设海油陆采平台需要注意对其冲刷防护,提高断面的稳定性,文章围绕海油陆采平台的冲刷防护,对其断面的稳定性进行试验,通过具体工程的分析,从而提出面对冲刷防护的具体措施。     

对合阳榆林下延工程抢险的思考

2001年9月3～24日，当黄河龙门站流量仅为368～1130m^3/s，多为800m^3/s以下时，黄河主流在合阳榆林护村工程与榆林下延工程之间形成斜河，不断坐湾冲刷，使其间长500m(回淤口)的滩岸接连溃退270多m，榆林下延工程上坝路坍塌长达160余m，宽1～3m，出险原因一是流量较小，     

浅谈山区高等级公路沿河路基设计

本文是作者根据自己从事山区高等级公路建设过程中对沿河路基设计及施工提出的体会和见解,以供相关工程建设及设计人员参考借鉴。     

三维地震资料解释煤层冲刷范围

根据煤系及河流沉积规律,通过钻孔资料做煤层顶板岩性分布趋势分析图,结合地震地质模型研究,找出煤层冲刷及河流相沉积在地震反射剖面上的反映特征,利用三维地震剖面资料,煤层反射波顺层振幅切片等综合手段确定河流对煤层的冲刷范围.     

Bridge pressure flow scour at clear water threshold condition

Bridge pressure flow scour at clear water threshold condition is studied theoretically and experimentally. The flume experiments reveal that the measured scour profiles under a bridge are more or less 2-dimensional; all the measured scour profiles can be described by two similarity equations, where the horizontal distance is scaled by the deck width while the local scour by the maximum scour depth; the maximum scour position is located just under the bridge about 15% deck width from the downstream deck edge; the scour begins at about one deck width upstream the bridge while the deposition occurs at about 2.5 deck widths downstream the bridge; and the maximum scour depth decreases with increas-ing sediment size, but increases with deck inundation. The theoretical analysis shows that: bridge scour can be divided into three cases, i.e. downstream unsubmerged, partially submerged, and totally submerged. For downstream unsubmerged flows, the maximum bridge scour depth is an open-channel problem where the conventional methods in terms of critical velocity or bed shear stress can be applied; for partially and totally submerged flows, the equilibrium maximum scour depth can be described by a scour and an inundation similarity number, which has been confirmed by experiments with two decks and two sediment sizes. For application, a design and field evaluation procedure with examples is presented, including the maximum scour depth and scour profile.     

做人的智慧

1.记住该记住的,忘记该忘记的。改变能改变的,接受不能改变的。2.能冲刷一切的除了眼泪,就是时间。以时间来推移感情,时间越长,冲突越淡,仿佛不断稀释的茶。     

管卡松脱导致锅炉爆管的原因分析

锅炉受热面四管爆漏严重影响机组安全运行,引起四管爆漏的原因有很多,本文对管卡问题导致爆管进行了分析。并提出了相应的控制措施。