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DCS更换CPU电源注意事项? 请教下,DCS的CPU电源更换时需要注意哪些? 我们公司用的是横河的CS3000系统,是不是只需要把电源模块上的开关打到OFF 就可以更换了?谢谢查看更多 4个回答 . 3人已关注
请教--有没有一种不那么脆的无机胶粘剂? 请教各位朋友,有没有一种与金属具有一定结合强度,但是又不容易脆裂的无机粘合剂 (因为铁基体会存在一定的程度的往复形变,且希望该粘合剂能耐300度,如果有的话抗热震性可以进一步了再要求)查看更多 5个回答 . 2人已关注
这句话翻译有些别扭,麻烦高人指导下!? A baffle in the heat exchanger was redesigned, and the control algorithm for the compressor was altered to recycle warmer gas when necessary. 换热器 中的折流板进行重新设计, 压缩机 的经过改变,当必要时对温热气体进行循环。 这句话翻译有些别扭,麻烦高人给修饰下,谢谢! 查看更多 7个回答 . 3人已关注
EDTA的换算? 请问一下,关于EDTA的换算,Zn的滴定度为0.3036,换算出铟的滴定度是多少?查看更多 1个回答 . 1人已关注
催化干气中为什么有空气? 制氢原料气讲到催化干气组成如下: 氢气:11.62%; 甲烷 38.22%;乙烷:10.51%; 乙烯 :16.91%;丙烷:0.16%; 丙烯 :0.83%;丁烷:0.08%;一氧化碳:0.23%; 二氧化碳:1.59%;空气:19.85%;硫化氢:0.102% 催化朋友请讲一讲,催化干气中为什么有空气、一氧化碳、二氧化碳?查看更多 10个回答 . 4人已关注
小生意大成就---十大创业建议帮你成就梦想? How To Make A Million In Your Small Business There are hundreds of thousands of small business owners within the U.S. and millions around the world; they form a vibrant core to many national economies . However, a large portion of small businesses do not survive. According to the U.S. Small Business Administration, only about 31% of small businesses survive for at least seven years - never mind making it big. Almost every small business would like to grow its revenues, but most are only working with teams of a few employees. While some marketing and growth tactics that work well for large corporations can be applied to small businesses, many cannot, and growing a new business from scratch is even more unique. Read on to find out how to grow a small business and bring it to the big leagues. 1. Become a Thought Leader in Your Industry Start a blog, give speeches, write articles or publish a book on your niche area of business. Become the expert that people seek out when they need a solution. If you market yourself enough you will be receiving warm phone calls from individuals wanting to buy from you instead of potentially cold calling on individuals who have no interest in your business. (For further reading, check out Small Business: It’s All About Relationships .) This is the least expensive suggestion on how to grow your business - there are many places where you can start a blog for free. Invest one hour a day in learning about your market and writing about what you learn and within one year, you will have potential customers and joint venture partnerships approaching you. This strategy works for all types of niches, including dog training, hedge fund investing, copywriting, fundraising and physical therapy. Every niche has an online audience looking to learn more about the subject. Start feeding them with valuable content and they will start feeding your business with leads and marketing opportunities. This tip is provided first because this alone has helped hundreds of businesses grow to more than $1 million a year in revenue. 2. Create Passive Income Streams Subscription-based models and membership programs sell a customer once and earn a profit every month as long as you keep those customers happy. An example of this is a website information portal selling a service provider directory listing. The website charges $99 a month and receives that payment every single month of the year as long as the website remains popular and relevant. Passive income models could incorporate a low monthly fee for on-demand customer service or maintenance, subscription access to exclusive coaching or a newsletter with interviews, book reviews and market analysis on your industry. 3. "Up Sell" Your Current Customers . If you have a customer who loves your product, perhaps he or she would like a premium version of that same product, or a second one for a coworker or a family member. One of the easiest ways to quickly grow your business is to earn additional sales through your current customers. 4. Over-Deliver to Every Customer Whenever Possible Word of mouth is the most powerful marketing tool that you can employ. Many large corporations spend millions of dollars on marketing only to pay their customer service personnel minimum wage . This is their area of vulnerability - your small business can create more personal relationships and provide better delivery and customer service than most of the large players in the industry. 5. Conduct a Best Practices Analysis Analyze your top five competitors; everything from their websites, customer service, to product lines and prices. Take notes and write down 10 new ideas you could use from each of these competitors. If you do this once a year, not only will you keep up with your competitors as they innovate and evolve, but you will leapfrog over them as many others will not do this hard work, and the combination of new ideas will lead to new creative solutions for your customers. (To learn more, see Competitive Advantage Counts .) 6. St ay Focused Your business is an investment; changing your environment by spending time with other motivated individuals can help you keep focused. Become a student of positive psychology, and clear your office and desk of distractions. If you get up early and start each day by studying your industry , your competitors and your top-level goals, you will work more efficiently and gain an edge on your competition. 7. Sell Your Products and Services Internationally Choose one to three target markets outside of where you are currently operating and identify would-be competitors there. What do they charge? What products do they offer? Call or email these companies as time permits, and introduce yourself. Tell them you are doing research, as many will be happy to lend some advice or tips. In a worst-case scenario, you will find that there is no way to expand abroad, but you will probably come across another product idea or customer acquisition strategy by completing the research and seeing what the industry is like within other regions of the world. 8. $1 Million I s an Intimidating Number Work toward $1 million a year in revenue backwards. If you want your business to earn $1 million a year, that means you must make $83,333 a month, or $20,833 a week, or $4,166 per business day. That is a lot of money to earn every business day, but what new products or services could you add now that could possibly earn that much within one to two years? Think in terms of leverage, developing systems and residual passive income streams. Every minute of time you spend should be seen as an investment. 9. Acquire Businesses Who are your competitors? How are they doing business-wise? Are they about to retire? Most businesses sell for two to five times their annual earnings or profits, and many parties who are interested in selling end up simply closing shop after not finding an interested buyer. Many times, you may be able to pick up a business that, when combined with a business you already own, could pay for itself within 12-18 months. This is one of the most expensive but quickest ways of reaching $1 million a year in sales. (To examine the flip side argument, read 7 Steps To Selling Your Small Business .) 10. Experiment Many business owners find that it is only through listening to customers and/or trying to offer a dozen business services or products that they finally find one that really resonates with their target market and takes off in terms of sales. Each experiment that you try will teach you something about your business and customers. Many of the largest, most successful companies have market-tested thousands of products to develop their portfolios of one- to two-dozen existing product offerings. Hard work creates luck and if you experiment long enough, you will find something that sticks. Conclusion This list is not exhaustive, but it should help create some momentum and spur creative thinking on how to grow your business. While it is true that some of these tips may be applied more readily to some businesses than others, those that appear most foreign to your industry could be most valuable as it is less likely that one of your competitors has used them.查看更多 0个回答 . 1人已关注
氟化铵可以用玻璃瓶吗? 最近做一个反应要用到 氟化 铵,量比较大, 无水 ,150度回流。此种条件下能否用 玻璃 反应瓶?如不能该用什么容器代替?望高手赐教。查看更多 2个回答 . 1人已关注
ZCQ[ZMD]自吸式磁力泵的工作应用原理? 磁力泵 又可称它为磁力驱动泵,由泵、 磁力传动器 、电动机三部分组成。关键部件磁力传动器由外磁转子、内磁转子及不导磁的隔离套组成。当电动机带动外磁转子旋转时,磁场能穿透空气隙和非磁性物质,带动与叶轮相连的内磁转子作同步旋转,实现动力的无接触传递,将动密封转化为静密封。 今天我们介绍的是磁力泵中的一种: 自吸式磁力泵 (自吸磁力泵),这种磁力泵的常用型号为:ZCQ[ZMD]系列磁力驱动泵。 它的工作应用原理如下: 吸水室中的剩余液与进液管路中的空气被叶轮搅拌成气水混合物,混合物经蜗壳进入气液分离室,随着速度减慢,导致气水分离,空气由增压泵出液口排出,液体经回水孔返回泵内,经过多次循环,进液管道中的空气被排净,使泵内形成一定的真空度,达到自吸作用。 自吸磁力泵,自吸式磁力泵的工作原理就是泵启动前不需引灌介质,经短时间运转,靠泵本身的作用,把水吸上来,投入正常运转。泵体由吸液室、储液室、蜗壳、回流孔、气液分离室等部件组成。 家用水泵启动后,在离心力的作.吸水室中的剩余液与进液管路中的空气被叶轮搅拌成气水混合物,混合物经蜗壳进入气液分离室,随着速度减慢,导致气水分离,空气由泵出液口排出,液体经回水孔返回泵内,经过多次循环,进液管道中的空气被排净,使泵内形成一定的真空度,达到自吸作用。 自吸式 磁力驱动离心泵 不但具有自吸功能,而且为磁力驱动结构,具有全密封、耐腐蚀、无泄漏的特点,是自动化远距离控制和流动使用的理想用泵。在一些泵的轴承体底部还设有冷却室。当轴承发热引起轴承体温升超过70度时,可在冷却室处通过任意一只冷却液管接头,注入冷却液循环冷却。泵内部防止液体由高压区向低压区泄漏的密封机构是前后密封环,前密封环装在泵体上,后密封环装在轴承体上,当泵经长期运转密封环磨损到一定程度,并影响到泵的效率和自吸性能时,应给予更换。 ZCQ[ZMD]氟塑料自吸式磁力泵广泛适用于石油化工、有色金属冶炼农药、制酸制碱、造纸、酸洗工艺、稀土分离、电镀、电子,化成箔等行业,是目前磁力泵品种中结构最新颖的产品,高效节能、安全实用。该型衬氟自吸式磁力泵荣获“国家科学技术进步一等奖”,国内首创,已申请国家专利技术保护。 设计特点: ZCQ[ZMD]系列自吸式磁力泵,集合了磁力泵的所有优良特性,且最大的优势即可以自吸,一般自吸高度可达2-4米,充分结合了自吸泵和磁力泵的所有优点,既具有自吸功能,又取消了轴封,利用磁力偶合间接传动,完全消除了滴漏的现象。是输送易燃、易爆、易挥发、强腐蚀、强渗透性高危化学介质最理想的选择。根据所输送介质的特性,如介质比重、腐蚀性等可选用不用材质的泵主轴材料,如输送氢氟酸和有机溶剂可选用无压烧结碳化硅主轴或99.99%氧化铝陶瓷主轴。 ZCQ[ZMD]系列磁力驱动泵采用最新材料制成的隔离套具有高强度的力学性能,彻底消除了一般磁力泵具有的磁涡流现象。 ZCQ[ZMD]系列磁力驱动泵采用独特的后拉式结构,整机过流部分只有5个部件总成组合而成,一人便可以很轻松地进行内部检修和零件更换,无需拆卸管道,大大方便了日常的检修和保养工作。 以上就是自吸磁力泵(自吸式磁力泵)的工作应用原理。 查看更多 1个回答 . 1人已关注
废旧轮胎回收生产胶粉生产工艺? 如果一个橡胶生产企业用废旧轮胎材料,经过抽出钢丝、裂解橡胶以后产生 炭黑 ,炭黑用什么设备,怎样的工艺转化生产出胶粉?这种工艺目前有几种呢?查看更多 0个回答 . 3人已关注
生产操作中如何提高转化效率? 本人认为 1、适度提高转化各段进口温度; 2、摸索并获得转化各段的最大温升,特别是最后一段温升; 3、摸索并获得最佳O2/SO2体积比,一般装置接近0.95最合适; 4、选用进口触媒。查看更多 22个回答 . 2人已关注
盐酸,温度200,如何选材? 原帖由 Antren 于 2008-11-27 17:16 发表 设备的制造工艺在国内已经不是什么问题了,目前最大的 反应器 直径是4M,而直径在2m以下已经是家常便饭了。一年国内制造的不大于2m直径的锆钢复合板反应器应该超过50台,主要就是用在 盐酸 方面。   举例:锆702/ ... 容器采用复合板是不错的,螺带 搅拌器 用不了。查看更多 21个回答 . 4人已关注
康吉森画面标题都是什么意思? 看看这斜线处都表示什么意思!请高手给看看,都是什么报警 查看更多 5个回答 . 5人已关注
半再生重整——辛烷值问题? 怎样把重整装置 分馏塔 的轻石脑油的 辛烷 值升高,并把稳定 汽油 的辛烷值降下来查看更多 0个回答 . 5人已关注
螺栓强度的问题? 近期采购的成套螺拴,大约1000个 ,都已经安装完毕,而且打压、气密都已做完,送检螺母强度不合格,比规范要求低10%,不知道能不能用,该不该换查看更多 12个回答 . 4人已关注
空分分子筛后二氧化碳超标问题求助? 现有两套43000空分装置,装置投用4年多,周围环境中有xiao 酸雾、 氮氧化物 、二氧化硫、硫化氢、氨等有害气体。环境中二氧化碳含量在500~600ppm。南套装置距有害气体稍远,分子筛后二氧化碳暂时不超标,北套装置吸入口距有害气体近,近1年来分子筛后空气中二氧化碳微量在使用后期50分钟左右从0.3ppm上涨到3~5ppm,甚至更高。总使用周期从240分钟缩短到200分钟,效果不明显。低压换热器阻力从正常15kPa左右上涨到33kPa到头的时间逐步缩短,空分运行周期下降到30天左右。 北套分子筛蒸汽加热器微漏,再生污氮气中含水量约30~50ppm。 北套装置加工空气量约22万方每小时,进分子筛空气温度现在控制在16度以下,分子筛吸附器共2包,每包装填 活性氧化铝 约29吨,UOP 13X APG-I型分子筛54吨。 现在准备对北套装置采取措施:1)对蒸汽加热器进行处理,不能保证不漏。2)补加13X分子筛。 请大家帮忙计算一下大约需要补加分子筛的量,全部更换一是时间较长,二是费用过高。 另外还有更好的方法请赐教,真心感谢! 查看更多 26个回答 . 3人已关注
催化装置油浆泵抽空有什么现象?怎么处理? 如题:催化装置油浆泵抽空有什么现象? 分馏塔 顶压力怎么变化,怎么处理?查看更多 6个回答 . 3人已关注
离心风机问题,高手进? 新的 离心风机 , 355kw 额定电流 690A。之前手动,程序分别调试过 开满50HZ 正常,电流正常; 现在使用只能开到 80%,38HZ 已经660A多个电流了 ,之前调试电流没有问题,高手指点下查看更多 1个回答 . 4人已关注
关于车间使用管道的问题? 我是一个焦化厂的供货商,现在 甲醇 车间采购316的 不锈钢管 说是要走高温蒸汽和纯氧的 混合气 体,这次费尽千辛万苦终于算是找到了几支需要的管子,可是以后就很难讲能找到了,因为现在的316基本都被316L材质替代了,想问一下各位专业人士,在这个部位是否可以用316L替代316的产品,如果不行原因是什么,望各位不吝赐教,拜谢查看更多 0个回答 . 5人已关注
合成气发电? 请教,利用煤化工产生的合成气进行IGCC发电,其中燃气锅炉的发电量和蒸汽锅炉的发电量有没有一个大概的比例啊?查看更多 2个回答 . 1人已关注
工作中最常见的职业危害因素都有哪些? 职业病危害,对从事职业活动的劳动者可能导致职业病的各种危害。职业病危害因素包括:职业活动中存在的各种有害的化学、物理、生物因素,以及在作业过程中产生的其他职业有害因素。由于行业的多样性,不同行业在劳动过程中存在的职业危害因素也不一样,但根据其来源不同,可分为三类: (一)生产过程中产生的有害因素 1.化学因素 (1)有毒物质,如铅、汞,乙烯生产过程中,有苯、甲苯、乙基苯、苯乙烯等毒物;生产 丁苯橡胶 过程中有丁二烯、苯乙烯、高芳烃油、亚硝酸钠、过氧化 二异丙苯 等几十种。 (2)生产性粉尘,如炼油生产过程中,有石油焦粉尘,使用 催化剂 硅酸铝粉(粉尘状)等;催化剂生产过程中,有金属粉尘、水泥粉尘等,此外,还有石棉尘、煤尘等。 2.物理因素 (1)异常气象条件,如高温、高湿、低温等。 (2)异常气压,如高气压、低气压。 (3)噪声、振动。 (4)非电离辐射,如可见光、紫外线、红外线、射频、微波、激光。 (5)电离辐射,如X射线、放射性同位素仪表产生的丫射线等。 3.生物因素,如附着在皮毛上的炭疽杆菌、蔗渣上的霉菌等。在石化行业少见。 (二)劳动过程中的有害因素 劳动过程是指生产过程的劳动组织、操作体位和方式以及体力和脑力劳动的比例等。在此过程中产生的有害因素有: ①大检修或抢修期间,易发生劳动组织和制度不合理,劳动作息制度不合理等;②精神紧张;自动化程度高,仪表代替了笨重的体力劳动和手工操作,也带来了精神紧张问题。③劳动强度过大或生产定额不当,如安排的作业与职工生理状况不相适应等;④个别系统或器官过分紧张,如视力紧张等;⑤长时间处于某种不良体位或使用不合理的工具等。 (三)生产环境中的有害因素 生产环境可以是大自然的环境,也可以是按生产过程的需要而建立起来的人工环境,生产过程中的职业危害因素包括: ①自然环境中的因素,如炎热季节的太阳辐射;②房屋建筑或布置不合理,如有毒工段与无毒工段安排在一个车间;③由不合理生产过程所致的环境污染,如氯气回收、精制、液化岗位产生的氯气泄液,有时造成周围10~20m环境的 污染。 在实际生产中,职业病危害因素常不是单一存在的,多种职业病危害因素的联合存在,常可加重对职工健康的影响。查看更多 0个回答 . 5人已关注
简介
职业:江西凯美迪生物医药技术有限公司 - 副矿长
学校:湖南科技学院 - 化学与生物工程学院
地区:湖南省
个人简介:如果你浪费了自己的年龄,那是挺可悲的。因为你的青春只能持续一点儿时间——很短的一点儿时间。查看更多
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