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液下泵选电机? 才三米搞什么液下泵。。搞个立式自吸泵好了。。是罐子还是池子。。。立式自吸泵不比液下泵便宜多了啊。。零部件少、维护还简单。。查看更多
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求多晶硅还原炉的设计步骤? 对数确定也没用的啊,还原炉的其他的参数你起码知道吧,要不你设计出来也没人用,你不是设计院,整个流程你可以控制,设备设计就是一个节点,人家需要怎么样的结构,需要设备所达到的生产能力,工艺所要求的查看更多
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蒸馏塔压力是塔顶高还是塔底高,饱和蒸气压与轻重组分有 ...? 塔顶压力低。组分轻的饱和蒸汽压高! 你看一下,苯和甲苯的饱和蒸气压,饱和蒸气压是定值 查看更多
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ZG25与2Cr13间焊接选择哪种焊条? 可以选用a307焊材,焊接方法手工电弧焊试试。查看更多
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关于设备图纸立面图和管口方位图管口对不上的问题? 化工设备管口多,可能在同一标高、沿圆周分布5个甚至10个管口,假如按照常规的第三视角投影规格,有些管口就无法在图纸中体现。 为了完整表达,不得已采取了以上办法。 这对于采用三维模软件设计出图,是个灾难。查看更多
CAD技术? 坛子里谁会啊,能否把自己的作图过程和讲解搞成屏幕录像的方式发到这上面来供我们学习 啊。查看更多
马上进行检修了,大家讨论一下工艺人员该做些什么? 检修的内容大多是为工艺服务的,工艺员应该有很多的工作可做的。 1、编写系统开停车方案。 2、编写系统开停车置换方案,确保系统的动火和生产安全。 3、技改项目的吹扫、试车、查定方案。 4、利用这一空档,进行工艺人员的培训。 5、项目检修完的验收工作。 6、会诊系统的瓶颈并制定改进方案。查看更多
常温管道做热补偿吗? 说个例子,低压瓦斯管线,这个就是常温运行的,就连保温都没有,可停工需要动火怎么办,反正我们厂但是用蒸 ... 是的,不过这是另外一个问题了,也就是偶尔需要吹扫的管子需要像蒸汽管一样做补偿吗?做的话,很久都不吹一次,太浪费,业主也不太同意;不做的话,要吹的时候怎么办?我也发过帖子问过这个问题,没有得到很好的回答,好像都是凭着经验决定,最后得到一个折中的回答就是不做,但是吹扫的时候缓慢升温。 回到这个问题上,如果是普通的不吹扫的常温管,直管段很长的话,需要做热补偿吗?我见到的现场的例子是需要做的,不过比较少π,而且中间没有做固定架,根据我们应力的人说,如果常温管做固定架的话,推力会很大。但是没有固定架的π有用吗?他的补偿量是怎么决定的? 大家做管廊的时候,应力计算把常温管也建模吗?查看更多
高手指点一下? 工业na2s和bas中主要有什么杂质啊。实验室的硫化钠是白色的,放了三个月结块了,但拿剪刀一捅就比较散了,大约有5%的水不溶物,硫化钡是灰绿色粉末(反正灰不溜秋的),不溶物15%。这几张图片是用sem的元素分析功能照的 , , - 查看更多
关于液氯分离器 哪位高手能给小弟讲讲? 回复 1# billiejeanfan77 液氯分离器安装高度有一定的要求,否则对流料影响。查看更多
煤浆里面为何加沙? 回复 14# qihuajingling 但是灰熔点也不能无限低呀,否则,挂渣很难。查看更多
来自话题:
单法兰液位计的耐压问题? 这个算不算“自制”双法兰液位计? 没有啊,你还是只有一个法兰嘛,只不过这样做是把罐子当闭密容器看了。一般带氮封的大一些的储罐都是这么做的,用双法兰成本高出一截,而且不见得有那么长的毛细管,呵呵。 查看更多
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泵轴承箱上用的放气塞用多少种型式? 加个迷宫罩就行了查看更多
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硫酸储罐里面的悲剧? 这样的师弟在领导岗位上也不能长干,试想一下,自己都盲目瞎干,将来也是违章指挥;现在自己出事了,希望不要伤害太大,对自己也是一个教训; 看来了,选拔干部要求的不仅仅是吃苦耐劳,更重要的是要有一颗责任心,对自己负责,对别人负责; 试想不能好好爱惜自己,还能爱惜别人吗?查看更多
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补强圈的疑惑? 可以设计补强管查看更多
求助个公司名称翻译? 1# zhouhuahui 看看中石化主页自己的译文,就是sinopec maoming company [fly]sinopec maoming company[/fly] sinopec maoming company (herein after referred to as maoming company) i is located in maoming city and situated in a coastal area of guangdong province, with southwest china at its back and facing southeast asia. with oil refining as the leading role and petrochemical industry as the mainstay, it is a large scale integrated refining & petrochemical enterprise and also one of the largest petrochemical production bases in china. running more than 70 leading production units, maoming company boasts the primary crude oil processing capacity of 13.5 million mty and the ethylene producing capacity of 1 million mty. it enjoys convenient and fast import of crude oil and export of products, benefiting from a well-established dock, crude oil loading/unloading at sea and railway transportation system as well as crude oil, product oil pipeline transfer system with starting point and terminals of product oil transfer pipeline in southwest and the pearl river delta area. by the end of 2006, the original value of the fixed assets amounts to 24.048 billion rmb and net value of 13.422 billion rmb. the number of registered staff totals 7488. the company has created 10 new records among domestic enterprises with over 30 national authorized patents. in recent years, maoming company has been focused on development and expansion. in august, 1996, the completion and operation of 300,000mty ethylene plant(the capacity of the second year reached 360,000mty) marked the realization of integration of refining with petrochemical. since 1999, the company initiated revamp for refining capability which elevated the crude oil processing capability to 13.5 million mty from 8.5 million mty in 1999, becoming the first refining and petrochemical base whose refining capability exceeds 10 million mty. since 2004, following the guideline of "upgrading quality, restructuring, correcting potential risks, retrofitting technology, identifying potential and improving efficiency", the company established 1 million mty coking plant, 1.2 million mty catalytic reforming unit (cru), 2.6 million mty diesel oil hydrogenation unit and reconstructed one 600,000mty coking plant to 1 million mty, enabling more perfect refining and processing means and more reasonable structure of plants. on december 15th, 2004, maoming company started expansion of its ethylene capacity, and realized completion and operation only after 21 months on september 16th, 2006, creating a new record among similar ethylene projects with respect to short construction period, investment saving, successful start-up, high nationalized level of equipment and technology. up to this point, the ethylene capacity has expanded to 1 million mty from original 360,000mty, and maoming company became the first 1 million mty ethylene capacity production base in china. thus, maoming company owns 10 million mty refining capability and 1 million mty ethylene capacity, ranking the top place in china in terms of refining and petrochemical scale. it can supply more than 2.6 million tons of chemical products and 10 million tons of refining products per year with annual sales revenue exceeding 80 billion rmb and annual profit payments and tax turnover exceeding 10 billion rmb. moreover, it also brings ethylene downstream processing production value more than 10 billion rmb or even to 100 billion rmb, playing a more contributive role in promoting development of the local economy. in 2006, maoming company witnessed its best performance in history with processed crude oil of 14.0033 million tons and produced ethylene of 522,100 tons. the sales revenue amounted to 62.904 billion rmb with a growth of 14.595 billion rmb year-on-year, creating a new record of the enterprise. in 2007, maoming company will implement scientific development conception in every respect, adhere to the working policy of "optimizing production, itemizing management, deepening reform and consolidation of science and technology" and accomplish various tasks in a satisfactory manner, striving to rank the first in terms of efficiency among sinopec refining and petrochemical enterprises, make more contributions to the national and local economic development. 查看更多
首次学习aspen化工模拟软件的疑问? 经过 计算没有问题 答案如下: isentropic power required=131.94hp temperature=713.35f 而且楼上是正解 [ ]查看更多
关于职称英语? 求助 职称英语是永久性的吗?我今天刚毕业2年,如果现在考了,等到3年后我申报中级职称还用考试吗?还有职称计算机也一样吗?查看更多
win7自动升win10后,aspen流程图不显示了? 需要重新安装一下查看更多
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资料求助ABB控制系统? abb dcs的相关资料查看更多
简介
职业:连云港万泰医药材料有限公司 - 销售
学校:闽江学院 - 化学与化学工程系
地区:江西省
个人简介:忠诚可以简练地定义为对不可能的情况的一种不合逻辑的信仰。查看更多
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