余笙--盖德问答-化工人互助问答社区

余笙

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销售

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他的提问 2314 他的回答 13579

来自话题：

工艺技术

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合成气压缩机调速机构现场和总控如何切换? 你要讲明你现在用的是什么调速器,是机械调速还是电子调速查看更多

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五线制是什么? a、b、c三相加中性线和pe线查看更多

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来自话题：

化学学科

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管线震动大，有什么好的办法解决? 同意二楼的意见。采用气缸形式的开关阀的汽缸体积大。开关过快，管线就会有振动现象。我们也出现过这种现象。一方面，调慢阀门的开关速度，另一方面加固工艺管线。查看更多

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CAD中创建的块怎样才能删掉? 真是太感谢大家了！谢谢谢谢！查看更多

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HG 20231-2014 《化学工业建设项目试车规范》公示？目次 1 总则.............................................................................................................................1 2 术语.............................................................................................................................2 3 基本规定......................................................................................................................6 4 总体试车方案...............................................................................................................9 5 预试车....................................................................................................................... 11 5.1 静设备和管道系统................................................................................................... 11 5.2 电气系统..................................................................................................................12 5.3 仪表及控制系统.......................................................................................................14 5.4 动设备单机试车.......................................................................................................15 5.5 烘炉........................................................................................................................17 6 冷试车.......................................................................................................................19 6.1 冷试车的总体要求...................................................................................................19 6.2 单元或系统模拟运行...............................................................................................19 6.3 蒸汽发生器的煮炉...................................................................................................21 6.4 设备、管道系统的钝化............................................................................................22 6.5 催化剂、分子筛、树脂及干燥剂的装填....................................................................22 6.6 工艺系统气密性试验...............................................................................................24 7 热试车......................................................................................................................26 8 性能考核...................................................................................................................30 9 责任分工...................................................................................................................32 10 验收、交接..............................................................................................................34 附录 a 热试车条件检查单.............................................................................................37 本规范用词说明............................................................................................................39 条文说明.......................................................................................................................40 contents 1 general provisions·························································································· 1 2 terms·········································································································· 2 3 basic requirement··························································································· 6 4 general commissioning plan·············································································· 9 5 precommissioning·························································································· 11 5.1 static equipment and piping system································································ 11 5.2 electrical system························································································· 12 5.3 instrumentation and control system································································ 14 5.4 rotating equipment/machinery run-in ····························································· 15 5.5 drying out··································································································17 6 cold commissioning························································································ 19 6.1 general requirements of cold commissioning···················································· 19 6.2 “dummy operation” of each unit or system······················································ 19 6.3 boil out of steam boiler················································································· 21 6.4 passivation of equipment and piping system·······················································22 6.5 initial charge of catalysts，molecular sieves, resins and desiccants······················· 22 6.6 tightness test of process system···································································· 24 7 hot commissioning························································································· 26 8 performance test····························································································30 9 division of responsibilities·················································································32 10 acceptance and take over·············································································· 34 appendix a: ‘hydrocarbons or hazardous chemicals in’ check-list································ 37 explanation of wording in this code······································································ 39 addition: explanations for the provisions································································ 40 查看更多

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来自话题：

安全环保

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技术求助：污水处理中如何降低氯离子含量？ 你们回答都不负责任，别人都没有说浓度多少？里面除氯外还有其它什么成分？就乱七八槽的说一大堆？查看更多

9 0条评论

来自话题：

化学学科

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玻璃管换热器容易碎裂，材料换成四氟乙烯PTFE是否可行? 用在什么地方首先要说吧查看更多

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探讨：管道设备安装施工过程如何计划材料？怎么做又快又 ...？原帖由 guanqiong2004 于 2008-8-13 11:50 发表采用pdms吧,直接就可出来单线图,准确的材料表,同时,采办时一般也要根据材质,口径不同,增加适当的采办的富裕量比例,如大批量ss材质的管,2"以上的可为5[wiki]%[/wiki],以下的就10%.小批量的比例可更大些. 供参考. 请教哪里有pdms软件，费用多少？查看更多

2 0条评论

换热器管为什么会结垢？如何除垢? 对于有些换热器，运行中在冷却水侧定期用压缩空气吹除污垢，也能起到减缓结垢的作用。但得形成制度，坚持每班吹一次，每次5到10分钟，效果是很好的。。。不能等到换热效果不行了，再来作处理。再者就是平常要抓好水质管理，这点很重要。前面大家提到的采用脱盐水闭路循环，当然是最好的了，投资虽高一点，但总运行费用不高且效率高。如果系统系统有作热或是余冷可以利用，就可以采用脱盐水循环冷却，利用余热制冷或余冷间接冷却脱盐水，是可行的。。。查看更多

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来自话题：

仪器设备

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为什么高压下板式塔比填料塔效果好? 高压塔的气体密度大，液相负荷相对较大，采用在对付大液量工况时，填料塔没有优势，同样处理量下，高压填料 ... 感觉这种说法好像是对的，密度大了相对f因子中气相速度就减小了，相同塔径下通量减小，可能是这样吧，谢谢查看更多

9 0条评论

来自话题：

化学学科

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催化装置主风机是否设有油路蓄能器！？ 我们的压缩机没有蓄能器，只有高位油箱；汽轮机有蓄能器。查看更多

3 0条评论

aspen如何计算饱和蒸汽压？ aspen properties里面的analysis工具，楼主可以摸索下查看更多

#饱和蒸汽压

4 0条评论

主风管线大约180℃，为什么没有防烫保温？好像没见过？ 我们出口有,入口没有.查看更多

4 0条评论

共沸物用radfrac精馏竟能得到纯度99.9%的产品？应该是物性数据不全引起的先查气液平衡物性数据手册，查找1，3-二氧五环和水的气液平衡数据：如：p-x-y 或者t-x-y图然后使用合适的热力学数据进行回归得出二组分的交互硬性参数，在进行相应的精馏塔模拟查看更多

7 0条评论

求鲁奇净化，甲醇洗九塔工艺？这个工艺，最早的使用厂家为山西天脊集团，你可以想办法找原天脊集团的朋友求助，现在的流程已经不是原来的九塔流程了，做了改造。最后祝你好运。查看更多

6 0条评论

昆明化肥厂与云南氮厂？ 我上网查的，刚刚说错了从昆明市到静宁县有客运汽车直达详细地址：云南昆明市云南省昆明市静宁县查看更多

8 0条评论

来自话题：

仪器设备

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7.31热议——发挥下想象力（让接管旋转90°不泄漏）？原设计在转向弯头处采用m90×2公制螺纹连接，两头都是。如果在壳体外的排水口处有截止阀或球阀，排水时打开，装料时关闭，那么转向弯头处只要不被反应物堵塞，应该就没有问题，不需要密封吧。原设计的转向接头还起到支撑定位作用，用软接头就麻烦一些。此外，软管的内部是非金属的，反应工况条件下可能容易老化。查看更多

6 0条评论

来自话题：

仪器设备

，

关于厚壁管的计算公式？ 可参考 asme 锅炉i 附录 a317公式。或者压力容器筒体壁厚计算的所说的拉美公式。两种是一样的查看更多

10 0条评论

印度甲烷氯化物项目开车不正常的原因？ 这里是学术论坛,建议不要带有**色彩,说话也不要偏激. 查看更多

4 0条评论

来自话题：

说・吧

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经济危机下各企业不景气大学生求职难，大家是怎样看这一 ...？ 一针见血啊直接有效查看更多

4 0条评论

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简介

职业：福建闽海石化有限公司 - 销售

学校：西安建筑科技大学 - 智能建筑与楼宇自动化

地区：青海省

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