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销售
来自话题:
寻找稀硫酸浓缩工艺设计单位? 外国公司有德国的plinke公司和德国德地氏qvf公司查看更多
大型尿素装置和小型尿素装置由多大的区别? 大装置,单系列,流程简单,设备精良,停产损失大,现场干净,装置周围花园式,沟见底,零排放,无氨味,标准高,管理正规严细,操作要求高,员工"三懂四会",由其是国企,大气,员工福利好,自信,人员流动少,很难进去,主控室/员工休息室/配饮间/更衣室高标准水平.查看更多
煤焦油罐区设计? 水罐要看是否是全厂重要设施,要是普通水罐或废水罐,没有其它要求的,可按0.4d考虑查看更多
碱蒸发中真空度的产生!!? 在蒸发系统中,真空泵用来抽走系统中的不凝性气体,在不凝性气体抽走后,用水冷却二次蒸汽,使得系统能保持在相应温度下的水的饱和蒸汽压,也就产生真空度.如水温高,相应的饱和蒸汽压高,真空度就小,如果系统中不凝性气体不能有效排除,系统的真空度也不能保证.因此在蒸发过程中,真空泵和冷却缺一不可.当然真空泵可以采用多种形式,冷却可以是直接冷却,也可以是间接冷却.查看更多
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常压立式硫酸储罐罐壁设计? 硫酸的腐蚀很严重,取3mm腐蚀余量有点不够呢。壁厚应当适当厚一点,最上圈最小罐壁厚度建议取8mm。 嗯,介质为98%硫酸,我也觉得可以将厚度再稍微取大一点。按14 12 10 8 8分五层圈板 查看更多
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调节阀数据表中的最大流量计算? 不用留余量 啊,最大流量工艺提供的时候已经考虑了,再一个就是调节阀厂家计算选型时要考虑比计算的cv值要大 ... 要看具体情况,举个例子: 1。泵出口流量fv 泵的数据表上写:操作10,最大15。 你只要保证10这个流量下的调节开度,15能通过就可以了。泵的流量不会增大很多:马达配好了,功率就基本定死了,过载马达要跳车的。。。。 2。加热器蒸汽tv 换热器规格书按照蒸汽40来设计换热面积的,夏天10,冬天30。 实际上二个操作工况,那么选择的阀门以全开通过40,10和30能有良好开度,大于30%就ok了。换热器设计好的,换热面积定死了,给他50他也“吃不进去”,有温控在那里管着的。。。。 如果这个最大流量不是工艺的操作点,就放在85-90%开度,还要兼顾正常/最小工况的开度。 多请教工艺,他那个最大/最小流量是什么工况?有些是拍脑袋,x倍数给你的,那就没必要去追求“良好的开度”。 查看更多
来自话题:
请教下轴承问题? 此种说法不切实际,因为两端轴承箱的几何尺寸不一,怎么能变换?不要误导人家。还请检查一下转子的位置, ... 我们已经更换并使用过了,这是实际,呵呵 查看更多
大家给些 aspen plus 的入门 教程 资料谢谢? 好啊我也分享一下了谢谢各位了!查看更多
回转窑的加热问题? 空气加热可以节省燃料,谁说的?查看更多
来自话题:
普通离心泵和水泵安装与支座连接是硬性连接还是弹性连接? 离心泵底座用地脚螺丝将底板与基础刚性连接,离心风机应有减震垫。查看更多
AUTOCAD中如何进行3D管道绘制? 楼主的问题我也在苦恼。看了大家的留言有茅塞顿开的感觉。谢谢大家查看更多
金石灰熔聚72小时开车成功? 灰熔聚 mtg查看更多
终于装上了,CADWORX2014。Let's go!? 是的哦,请问哪里有下载呀?谢谢 查看更多
当换热器的加热蒸汽有饱和蒸汽变成过热蒸汽,换热效果会 ...? 饱和蒸汽传热系数高,饱和蒸汽直接冷凝过程中会产生相变,此时传热系数很高,传热系数比过热蒸汽通过“过热—饱和—冷凝”的传热系数高出很多。因为过热蒸汽降温至饱和蒸汽的过程中,传热系数很低(无相变过程)。查看更多
来自话题:
酸性水汽提装置如何判断净化水与原料水换热的换热器内漏? 从各台换热器的导淋分别取样分析就可以快速做出判断。查看更多
来自话题:
生产主管的工作? 我认为,生产主管职责为: 1 人员管理 2 生产管理 3 成本 4 设备操作 5 品质管理 6设备保养 7 异常处理 8 查核 9工安环保查看更多
劝大家不要盲目进多晶硅企业啦? 预言帝呀!再预言下什么时候春天能来,大家的日子能好过点!查看更多
美国人帮我们修改的英语句子? 美国同事帮ph7改的作文. ph7不会怪我吧? ph7写道: what is loilet soap? i asked my colleague who is a chemist what the toilet soap is when we were on the business trip to suzhou, a beautiful city not far away from shanghai. he looked at me surprisingly, "don't you know what toilet soap is?" i replied embarrassedly, "i know what soap is but i don't what toilet soap is. what is toilet soap for? the soap having a word, something like adjective, toilet in front makes me feel this kind of soap can only be used in toilet. but what kind of soap is which can only be used in toilet? i never saw but this is a kind of soap widely used. " he laughed. then he told me that normally there are 5 kinds of soap. they are toilet soap, laundry soap, crude soap, soft soap and liquid soap. toilet soap can be used to clean your hands, face or body and it is of best quality among the other kinds of soap. because, cleaning often happens in toilet so we call this kind of soap toilet soap. i realized suddenly we call toilet soap in chinese xiangzao(香皂). after i arrived at home, i checked the word toilet on wiki website. toilet came from french word toile which means the cloth draped on the shoulders of a lady or a gentleman when she or he has hair dressed. later, it extended the meaning both in english and french to various elements and operations of hair dressing and body care. in short, toilet meant make-up. now, i fully understand that toilet soap is a kind soap for make-up. it is the common soap we use everyday but of best quality soap. 美国人改道: what is loilet soap? while on a business trip to suzhou, a beautiful city not far away from shanghai, i asked my colleague, who is a chemist, what the toilet soap is. he looked at me surprisingly, "don't you know what toilet soap is?" i replied embarrassedly, "i know what soap is but i don't what toilet soap is. what is toilet soap? the word soap, having an adjective like toilet in front, makes me feel this kind of soap can only be used in the restroom. but what kind of soap is there that can only be used on restroom?" i never noticed it before, but this kind of soap is widely used. he laughed. then he told me that normally there are 5 kinds of soap; there are toilet soap, laundry soap, crude soap, soft soap and liquid soap. toilet soap can be used to clean your hands, face or body and it is the best quality amongst the other kinds of soap. because cleaning often happens in toilet (restroom), we call this kind of soap toilet soap. i realized suddenly that toilet soap is called xiangzao(香皂) in chinese . after i arrived at home, i checked the word toilet on a wiki website. toilet comes from the french word toile which means the cloth draped on the shoulders of a lady or a gentleman when she or he has their hair dressed. later, its meaning was extended in both english and french to various elements and operations involved in hair dressing and body care. in short, toilet is synonymous with make-up. now, i fully understand that toilet soap is a kind soap for make-up. it is the common soap we use everyday and also the best quality soap.查看更多
来自话题:
关于山东晋煤明升达化工有限公司气化系统? 3台ge,产能60万吨合成氨,那么炉型就是3200的炉子,单台日投煤量1500t/d。单台气化炉对应产能30万吨/年合成氨查看更多
设计单位和施工单位? 要看怎么结算,人工料单价那业主就惨了。总价合同就无所谓。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:烟台汽车工程职业学院 - 机械制造与自动化
地区:海南省
个人简介:真正的友谊无论从正反看都应一样,不可能从前面看是蔷薇而从后面看是刺。查看更多
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