首页
知秋
影响力0.00
经验值0.00
粉丝13
销售工程师
如何改善油性油墨在塑料上的附着力? 各位盖德,改善油性油墨在塑料上的附着力,该从哪些方面入手? 先谢谢大家! [ ]查看更多 7个回答 . 4人已关注
CAD里面的打断命令问题!? 以前用CAD的打断,只是快捷键命令后,再选择两点就可以打断了,可是最近傻了,要先选择打断对象,然后才能选择两点~~什么原因?查看更多 3个回答 . 2人已关注
历届美国总统就职演说系列4]-1801 Thomas Jefferson? 1801 Thomas Jefferson First Inaugural Address First Inaugural Address March 4, 1801 FRIENDS AND FELLOW-CITIZENS, Called upon to undertake the duties of the first executive office of our country, I avail myself of the presence of that portion of my fellow-citizens which is here assembled to express my grateful thanks for the favor with which they have been pleased to look toward me, to declare a sincere consciousness that the task is above my talents, and that I approach it with those anxious and awful presentiments which the greatness of the charge and the weakness of my powers so justly inspire. A rising nation, spread over a wide and fruitful land, traversing all the seas with the rich productions of their industry, engaged in commerce with nations who feel power and forget right, advancing rapidly to destinies beyond the reach of mortal eye -- when I contemplate these transcendent objects, and see the honor, the happiness, and the hopes of this beloved country committed to the issue and the auspices of this day, I shrink from the contemplation, and humble myself before the magnitude of the undertaking. Utterly, indeed, should I despair did not the presence of many whom I here see remind me that in the other high authorities provided by our Constitution I shall find resources of wisdom, of virtue, and of zeal on which to rely under all difficulties. To you, then, gentlemen, who are charged with the sovereign functions of legislation, and to those associated with you, I look with encouragement for that guidance and support which may enable us to steer with safety the vessel in which we are all embarked amidst the conflicting elements of a troubled world. During the contest of opinion through which we have passed the animation of discussions and of exertions has sometimes worn an aspect which might impose on strangers unused to think freely and to speak and to write what they think; but this being now decided by the voice of the nation, announced according to the rules of the constitution, all will, of course, arrange themselves under the will of the law, and unite in common efforts for the common good. All, too, will bear in mind this sacred principle, that though the will of the majority is in all cases to prevail, that will to be rightful must be reasonable; that the minority possess their equal rights, which equal law must protect, and to violate would be oppression. Let us, then, fellow-citizens, unite with one heart and one mind. Let us restore to social intercourse that harmony and affection without which liberty and even life itself are but dreary things. And let us reflect that, having banished from our land that religious intolerance under which mankind so long bled and suffered, we have yet gained little if we countenance a political intolerance as despotic, as wicked, and capable of as bitter and bloody persecutions. During the throes and convulsions of the ancient world, during the agonizing spasms of infuriated man, seeking through blood and slaughter his long-lost liberty, it was not wonderful that the agitation of the billows should reach even this distant and peaceful shore; that this should be more felt and feared by some and less by others, and should divide opinions as to measures of safety. But every difference of opinion is not a difference of principle. We have called by different names brethren of the same principle. We are all Republicans, we are all Federalists. If there be any among us who would wish to dissolve this Union or to change its republican form, let them stand undisturbed as monuments of the safety with which error of opinion may be tolerated where reason is left free to combat it. I know, indeed, that some honest men fear that a republican government can not be strong, that this Government is not strong enough; but would the honest patriot, in the full tide of successful experiment, abandon a government which has so far kept us free and firm on the theoretic and visionary fear that this Government, the world's best hope, may by possibility want energy to preserve itself? I trust not. I believe this, on the contrary, the strongest Government on earth. I believe it the only one where every man, at the call of the law, would fly to the standard of the law, and would meet invasions of the public order as his own personal concern. Sometimes it is said that man can not be trusted with the government of himself. Can he, then, be trusted with the government of others? Or have we found angels in the forms of kings to govern him? Let history answer this question. Let us, then, with courage and confidence pursue our own Federal and Republican principles, our attachment to union and representative government. Kindly separated by nature and a wide ocean from the exterminating havoc of one quarter of the globe; too high-minded to endure the degradations of the others; possessing a chosen country, with room enough for our descendants to the thousandth and thousandth generation; entertaining a due sense of our equal right to the use of our own faculties, to the acquisitions of our own industry, to honor and confidence from our fellow-citizens, resulting not from birth, but from our actions and their sense of them; enlightened by a benign religion, professed, indeed, and practiced in various forms, yet all of them inculcating honesty, truth, temperance, gratitude, and the love of man; acknowledging and adoring an overruling Providence, which by all its dispensations proves that it delights in the happiness of man here and his greater happiness hereafter -- with all these blessings, what more is necessary to make us a happy and a prosperous people? Still one thing more, fellow-citizens -- a wise and frugal Government, which shall restrain men from injuring one another, shall leave them otherwise free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned. This is the sum of good government, and this is necessary to close the circle of our felicities. About to enter, fellow-citizens, on the exercise of duties which comprehend everything dear and valuable to you, it is proper you should understand what I deem the essential principles of our Government, and consequently those which ought to shape its Administration. I will compress them within the narrowest compass they will bear, stating the general principle, but not all its limitations. Equal and exact justice to all men, of whatever state or persuasion, religious or political; peace, commerce, and honest friendship with all nations, entangling alliances with none; the support of the State governments in all their rights, as the most competent administrations for our domestic concerns and the surest bulwarks against antirepublican tendencies; the preservation of the General Government in its whole constitutional vigor, as the sheet anchor of our peace at home and safety abroad; a jealous care of the right of election by the people -- a mild and safe corrective of abuses which are lopped by the sword of revolution where peaceable remedies are unprovided; absolute acquiescence in the decisions of the majority, the vital principle of republics, from which is no appeal but to force, the vital principle and immediate parent of despotism; a well-disciplined militia, our best reliance in peace and for the first moments of war till regulars may relieve them; the supremacy of the civil over the military authority; economy in the public expense, that labor may be lightly burthened; the honest payment of our debts and sacred preservation of the public faith; encouragement of agriculture, and of commerce as its handmaid; the diffusion of information and arraignment of all abuses at the bar of the public reason; freedom of religion; freedom of the press, and freedom of person under the protection of the habeas corpus, and trial by juries impartially selected. These principles form the bright constellation which has gone before us and guided our steps through an age of revolution and reformation. The wisdom of our sages and blood of our heroes have been devoted to their attainment. They should be the creed of our political faith, the text of civic instruction, the touchstone by which to try the services of those we trust; and should we wander from them in moments of error or of alarm, let us hasten to retrace our steps and to regain the road which alone leads to peace, liberty, and safety. I repair, then, fellow-citizens, to the post you have assigned me. With experience enough in subordinate offices to have seen the difficulties of this the greatest of all, I have learnt to expect that it will rarely fall to the lot of imperfect man to retire from this station with the reputation and the favor which bring him into it. Without pretensions to that high confidence you reposed in our first and greatest revolutionary character, whose preeminent services had entitled him to the first place in his country's love and destined for him the fairest page in the volume of faithful history, I ask so much confidence only as may give firmness and effect to the legal administration of your affairs. I shall often go wrong through defect of judgment. When right, I shall often be thought wrong by those whose positions will not command a view of the whole ground. I ask your indulgence for my own errors, which will never be intentional, and your support against the errors of others, who may condemn what they would not if seen in all its parts. The approbation implied by your suffrage is a great consolation to me for the past, and my future solicitude will be to retain the good opinion of those who have bestowed it in advance, to conciliate that of others by doing them all the good in my power, and to be instrumental to the happiness and freedom of all. Relying, then, on the patronage of your good will, I advance with obedience to the work, ready to retire from it whenever you become sensible how much better choice it is in your power to make. And may that Infinite Power which rules the destinies of the universe lead our councils to what is best, and give them a favorable issue for your peace and prosperity.查看更多 3个回答 . 3人已关注
新型晶体硅电池产业化技术研究启动? 新型晶体硅电池产业化技术研究启动 作者:高长安 王帅 文章来源: 科学时报 更新时间:2012-08-09 中化新网讯 8月5日,国家“863”计划重大课题“效率20%以上新型电极结构晶体硅电池产业化成套关键技术及示范生产线”启动会在河北保定召开。   据悉,该课题由英利集团光伏材料与技术国家重点实验室牵头,采用产学研模式,共有五家科研院所、高校和企业参加。课题包括三项任务,其中英利集团与中科院半导体所、中科院微电子所、北京航空航天大学共同承担了“效率20%以上N型 单晶硅 高效MWT电池及示范生产线”任务,重点研究N型MWT太阳能电池关键核心技术。   据了解,N型硅单晶高效太阳能电池是我国光伏领域的研究热点。如何通过科技研发实现我国光伏企业在该领域的突破,对我国光伏行业整体水平的提升有着重要意义。   英利集团首席技术官宋登元表示,该任务的目标是在英利集团现有“熊猫”单晶电池技术的基础上进行再创新,实现MWT技术与N型晶体硅电池集成,提高N型晶体硅电池电性能指标,提升电池转换效率,降低电池成本。   据悉,目前英利集团“熊猫”N型单晶硅电池的实验室转换效率达20%,是全球三大高效太阳能电池之一。 查看更多 1个回答 . 2人已关注
电动葫芦的“工作级别”指的是什么? ========= 电动葫芦 的“工作级别”指的是什么? =========查看更多 2个回答 . 4人已关注
丁苯胶乳用哪只真空泵比较好? 现在我们厂用的是w4的 往复式真空 泵,真空效果差,最大问题是噪音非常大,可以用什么代替呢。由于 丁苯胶乳 再高温下有气态物会进入 真空泵 ,冷却后变成固态硬胶,清理比较难,所有有些泵都不行,如罗茨和液环。 查看更多 1个回答 . 2人已关注
宜宾积极采取措施保障煤矿安全度汛? 宜宾是产煤大市,煤矿安全事关全市经济社会发展稳定和能源保障需求。记者6月13日从宜宾市安全生产监督管理局采访时获悉,随着主汛期到来,宜宾积极采取措施,保障煤矿安全度汛。   截至2013年底,全市境内已查勘核实 煤炭 资源储量53.68亿吨,占四川省的39.3%。截至今年5月底,全市在生产的矿井有29个,建设40个,整改18个,停止作业48个。   针对近期强降雨情况,市安全监管局加强横向纵向监测体系,在每周一的《煤矿安全监测监控系统运行周报》上进行一周天气提示,提醒各县(区)根据天气变化情况做好相应防范工作。同时,通过省、市气象部门关注并掌握最新天气状况,及时传达雨情、水情和汛情变化情况,加强对比历史数据进行科学研判,完善应急救援预案,加强应急救援物资、装备管理,明确防汛责任人,制定应急防汛通讯录,确保相关人员保持通讯联络畅通,发生灾情后迅速上报并统计受灾情况,确保应急处置快速有效。   据市安全监管局负责人介绍,市安全监管局还将会同川南煤监分局、市经信委等有关部门,采取随机抽查和督查的方式,对区县地方煤矿开展为期一个月的汛期煤矿安全检查,随机抽查各县级监控中心、各矿山企业和驻矿安监员的值班值守情况,加强重点时段、重点区域的监控和巡查力度,保障矿井水位监测 传感器 和矿井排水系统等设施设备运行正常,保障排水能力正常发挥,确保安全度汛。查看更多 0个回答 . 2人已关注
请教HYSYS中怎么查看气化潜热? 各位前辈们,请教下HYSYS中怎么查看气化潜热,一个物流的属性里面有个heat of vap ,这个算不算??还是高热值减去低热值?请高手裁定!!查看更多 1个回答 . 1人已关注
国内刮板蒸发器较好的厂家? 求国内刮板 蒸发器 较好的厂家? 价格是怎么定位的?按平方米吗查看更多 2个回答 . 5人已关注
防爆不锈钢软管? ● 1区、2区危险场所; ● ⅡA、ⅡB、ⅡC类爆炸性气体环境 ● 具有耐燃、耐腐蚀、耐水、耐老化、挠性良好、结构牢固、工作 可靠等优点; ● 挠性管长度,螺纹尺寸可根据用户需要特殊加工。如NPT螺纹, 公制螺纹等。 注:标注螺纹规格时并应注明内外螺纹,如:NGd-700×G3/4″(内)/G1″(外)意义为长度为700,一端为内 螺纹G3/4″,一端为外螺纹G1″的橡胶护套 挠性连接管 ; ● 执行标准GB3836.1-2000、GB3836.2-2000。 有 防爆橡胶挠性软管,防爆304 不锈钢 挠性软管 型号 管通 径 接头管螺纹(G″) 长度 最小弯曲半径(mm) 防爆标志 NGd□-700×G1/2 13 1/2 700 80 ExdⅡ/DIPA20 NGd□-1000×G1/2 13 1/2 1000 80 NGd□-700×G3/4 20 3/4 700 110 NGd□-1000×G3/4 20 3/4 1000 110 NGd□-700×G1 25 1 700 145 NGd□-1000×G1 25 1 1000 145 NGd□-700×G11/4 32 11/4 700 180 NGd□-1000×G11/4 32 11/4 1000 180 NGd□-700×G11/2 40 11/2 700 210 NGd□-1000×G11/2 40 11/2 1000 210 NGd□-700×G2 50 2 700 250 NGd□-1000×G2 50 2 1000 250 NGd□-700×G21/2 70 21/2 700 350 NGd□-1000×G21/2 70 21/2 1000 350 NGd□-700×G3 80 3 700 400 NGd□-1000×G3 80 3 1000 400 NGd□-700×G4 100 4 700 500 NGd□-1000×G4 100 4 1000 500 查看更多 0个回答 . 5人已关注
易吸湿样品抽滤问题? < >因没有真空保护下抽滤装置,样品现已沉淀,但抽滤就强烈吸水,无法收集,那位前人介绍一个简单办法试试,谢谢了,想通 氮气 同时抽滤,但没有保护效果不好,请各位多提建议!</P>查看更多 6个回答 . 1人已关注
请在大学的朋友们帮忙下载一篇论文,谢谢!? http://epub.cnki.net/grid2008/detail.aspx?filename=HGZD200602018&dbname=cjfd2006 查看更多 1个回答 . 3人已关注
LNG接收站中的再冷凝器尺寸应如何设计? 有没有做LNG接收站项目的 想问一下大家 LNG接收站中的再 冷凝器 的尺寸应如何设计,希望有人给点提示! 能按照 填料塔 设计么?查看更多 2个回答 . 4人已关注
关于石化厂废水再利用工艺浅析? 摘 要 <BR>  通过小试与中试研究,开发了一种新的炼油废水再生工艺和技术,处理费用低,运行稳定可靠。 <BR>     <BR>  一、前言 <BR>  炼油厂废水是原油炼制与加工过程中产生的一类废水,对环境的危害大。20世纪70年代以来,国内炼油厂大多采用老三套工艺处理此类废水,外排水基本可以达标。国外炼油厂的吨油耗水量和产生的废水量均很少,废水一般采用三级处理,外排水的污染物浓度很低,废水的回用率高。国内炼油厂废水回用的探索早在上世纪70年代就开始了,但由于种种原因,没能坚持下去。90年代以后,我国的缺水矛盾突出,节水和废水回用成为人们的共识,废水回用的研究和应用也日益广泛。 <BR>  炼油废水的再生常采用物理、化学和生物深度处理方法,其中膜分离、高级氧化技术和生物深度处理是当前研究的热点。膜分离技术主要用于炼油废水的脱油、去除悬浮物或者除盐;高级氧化技术中臭氧氧化在炼油废水回用中的应用较多,而电化学、光化学技术尚处于试验阶段;生物深度处理具有除污染效率高、运行可靠、费用低等优点,能够获得良好的再生水。还有研究者将达标外排水直接回用于循环水系统,利用药剂来达到控制结垢、腐蚀和杀生的目的。 <BR>  从炼油厂废水回用的现状看,存在着一些缺陷,如污染物去除不彻底、除污染的种类单一、对循环水系统的影响大等,因此,开发简单适用、高效可靠的废水再生工艺或技术仍然十分必要和迫切。项目组经过一年多的研究,完成了相关工艺的小试和现场中试,生产性废水回用处理装置也已进入应用阶段,总出水回用到了循环冷却水、办公和生活杂用等领域。 <BR>  二、炼油厂废水回用处理的试验研究 <BR>  1.外排水的水质状况 <BR>  中试在某石化公司废水处理场进行,试验用水为该废水处理场的外排水。主要水质指标如下:COD80~140mg/L,BOD4.36~48.7mg/L,NH3-N6.91~77.65mg/L,油一般低于10mg/L,SS52.3~92.9mg/L,硫化物、酚低于1mg/L,外排水的颜色呈暗红色。 <BR>  2.工艺流程及试验装置 <BR>  2.1工艺流程 <BR>  分别建小试和中试装置各1套。中试装置为研究的主体;小试装置作为补充试验用。中试的技术路线如下:外排水→悬浮载体生物氧化深度处理→絮凝沉淀→石英砂过滤→臭氧部分氧化→生物活性炭处理→消毒→清水回用。 <BR>  2.2主要试验装置 <BR>  (1)生物深度处理装置:共有2套,高为1.8m,有效体积分别为5.95m3和4.95m3,采用穿孔管曝气方式。放置悬浮载体,两个处理池可串联或并联使用。悬浮载体呈短圆柱状,直径为5cm,高5cm,由翼片和套环组成,密度与水接近,可自由浮动于池内不同位置,比表面积达230m2/m3。 <BR>  (2)沉淀池:1个。前段用钢板隔成絮凝反应区, 絮凝剂 采用无机高分子药剂聚双酸铝铁(P AF SC);中段为固液分离区,后段被隔成清水区,兼作提升泵的吸水井。 <BR>  (3)砂滤柱:直径0.71m,高3.15m,放置石英砂,粒径为0.9~2mm,采用气水反冲洗方式。 <BR>  (4) 臭氧发生器 的产量为3~5gO3/h,臭氧与废水的接触采用鼓泡混合方式。 <BR>  (5)活性炭柱为钢结构,直径0.82m,高2.65m,放入不定形活性炭。活性炭属于煤质炭,碘值和亚甲蓝值都很高。 <BR>  3.试验系统的处理效果 <BR>  悬浮载体生物氧化工艺是一种新型水处理工艺,在固定填料生物接触氧化工艺的基础上发展而来,既有生物流化床的优点,也有活性污泥法的特点,管理和运行十分方便。处理装置投加填料后经过4周左右(水温20℃上下)就可培养出良好的生物膜,进入正常的试验阶段。 <BR>  3.1主要污染物的去除 <BR>  试验系统连续稳定运行7个月,总进水和总出水的主要污染物浓度变化。主要污染物的去除效果良好。外排水深度处理后,COD<40mg/L,月均去除率为44.6%~80.7%;BOD的去除率为67.5%~83.9%,出水BOD<6mg/L,可满足多种回用领域对BOD的要求。NH3-N的月均去除率为28.7%~79.2%,去除负荷率最高达到0.1kg/(m3·d),NH3-N主要由悬浮载体生物氧化工序去除,去除效率受进水碱度的影响较大。油、硫化物、SS和浊度等的去除也十分彻底,分析表明硫化物和酚在生物深度处理工序就几乎被完全去除。 <BR>  试验装置对总有机碳(TOC)有很好的去除效果。进水TOC月平均为22.4mg/L,总出水平均为3.05mg/L,总去除率达到86.4%;外排水的色度主要通过生物深度处理、臭氧氧化和活性炭吸附去除,总出水色度仅有10~20度;外排水的总细菌数为104~105个/mL,总出水为102~103个/mL,低于工业用新鲜水的指标。试验表明,液氯和臭氧对回用水均有理想的杀菌作用,但前者的费用更低。 <BR>  3.2微量有机物的去除 <BR>  炼油污水的微量有机物种类与数量均较多。GC-MS分析表明,外排水分子量100以上的有机物共147种,总浓度为1409.63μg/L,出水共有74种物质没有检测到,66种物质的浓度显著减少,微量有机物的总浓度为52.49 μg/L,降低了96.3%。可见,微量有机物的去除十分彻底。 <BR>  3.3悬浮载体与活性炭的微生物状况 <BR>  生物处理池稳定运行时,填料表面呈褐色至浅褐色,分布着一层致密、均匀的生物膜,生物量较高,每个填料的生物量为0.1185~0.1773gTS,挥发性成分占50%以上,表明填料上积泥少,膜的活性很高。生物膜上有数量众多的球状细菌、杆状细菌,此外,还有某种不知名的微小生物体。 光学显微镜 观察发现,附着在悬浮载体填料表面的动物主要是纤毛类原生动物,轮虫、环节动物等后生动物也时有出现。总之,填料表面的生物相非常丰富,十分有利于污染物的去除。 <BR>  在活性炭的表面或巨孔微生物生长的区域,既有很小的菌落,也可以看到单个或几个连在一起的菌群,以球菌和杆状菌为主。这说明细菌主要生长于活性炭的表面或者巨孔内,水和污染物可以自由地流动而不会影响炭的吸附功能。被吸附的污染物除了大分子物质外还有臭氧氧化后的中间产物,它们可以作为微生物生长的良好基质,细菌除了将这部分易降解的物质代谢外,还可以利用共代谢分解大分子物质,甚至某些细菌通过诱导效应产生和分泌特定的酶,直接氧化或分解大分子物质,实现活性炭的微生物再生。 <BR>  从活性炭的静态吸附和培养微生物后连续运行的试验也可反映出,微生物生长后,活性炭的吸附能力提高了一倍以上,即从257.49 mgCOD/gAC提高到了536.37mgCOD/gAC。 <BR>  三、结束语 <BR>  1.采用悬浮载体生物氧化、砂滤和臭氧生物活性炭等工艺深度处理炼油厂外排水,去除污染物的种类多、效率高,总出水的水质良好,可作为工业新鲜水、生活、办公杂用水、景观水等。 <BR>   2.臭氧部分氧化结合生物活性炭深度处理,臭氧的投加剂量低,活性炭的使用寿命长,对微量有机物和色度的去除效率高;整个工艺主要利用生物方法氧化和分解污染物,副产物少,后处理简单,无需大量的后处理费用。 <BR>  3.根据中试研究的成果而建立的废水回用工程,出水的水质好,装置运行稳定,水的处理费用低。查看更多 0个回答 . 4人已关注
请教一氧化碳相对湿度。? 焦炭 法 高纯一氧化碳 制备过程中,当从一氧化碳发生炉的高纯一氧化碳气体经过水洗,电除尘之后,此时,据说温度是30-40度的饱和蒸汽量的一氧化碳气体,请教在这种情况下,相当于相对湿度是多少?查看更多 0个回答 . 5人已关注
win7 32位旗舰版虚拟机安装ASPEN V7.2成功? 这两天在Win7 32位旗舰版虚拟机上安装ASPEN V7.2,第一个做的虚拟机上面安装的是Office 2003,按照网上说的步骤安装了Framework 4.0和SQL 2008 R2,关闭360安全卫士和杀软,开始ASPEN安装,lic检测通过后,安装到中途,在那个需要输入engine name、password 和 domain的界面通过之后(无论是按网上说的输入还是忽略),后面的Install界面就卡住了,无论如何进行不下去。寻找问题,认为可能是Office版本太低的问题,但是这个虚拟机上的Office 2003无法删除,升级到2007也无法删除2003。于是果断再弄一个自带Office 2007的win7新虚拟机。 开始仍然按网上说的步骤进行,注意一定要关闭360安全卫士和杀软,这个很重要。在需要输入engine name、password 和 domain的界面我选择了忽略,并没有按照网上说的进行输入。后面弹出的Install界面继续进行,果然顺利安装下去了,仔细看了下自动弹出的安装界面,其中一个是需要调用到Office 2007下的Access 2007,这证明了要想安装V7.2,果然需要先安装Office 2007,以后一路顺利,安装成功。后面又安装了ASPEN Engineering(Update)和中文补丁包,因为V7.2的EDR是在这个Update里面,同样成功。注意安装Update和补丁包的时候,一定不能同时进行Win 7的系统补丁自动更新,否则会英文提示有一个安装正在进行,本安装不能继续。 此外,在Win7安装Framework 4.0的时候,出了一点问题,弹出对话框报告说安装出现阻滞,无法进行。在网上找了下解决办法,进入win7 命令提示符界面,定位到文件夹“c:\windows\microsoft.net\framework\版本号\”, 执行命令:“aspnet_regiis.exe /iru”,“版本号”通过搜索 aspnet_regiis.exe文件位置获取。我在执行命令的时候又出现报告IIS未安装,于是继续度娘,找到“ win7下IIS的安装和配置 图文教程”,按照里面说的配置后,再在命令提示符下执行上述命令,顺利OK。再安装Framework 4.0成功。 查看更多 5个回答 . 3人已关注
加氢裂化装置的一组空冷风机? 加氢裂化装置的一组空 冷风机 查看更多 1个回答 . 2人已关注
大家聊聊杂醇? 本文由 盖德化工论坛 转载自互联网 甲醇 的精馏中,对于杂醇(注意:不是生产 乙醇 的那种 杂醇油 )的话题好像没有,请各位聊聊杂醇是怎么形成的,其中的成分是什么,采出的方法以及杂醇效益最大化的用途?以便更深入的了解和学习甲醇的精馏.查看更多 0个回答 . 2人已关注
off有非标准件的意思么? EQUIPMENT NAME:UNDERFLOW SCREENS (18-OFF) 后面18-OFF是非标件的意思么 谢谢查看更多 2个回答 . 5人已关注
翻译完了,帮忙看看有什么需要改进地方。? Details of MOV are outside the XXX(公司名)’s scope of work. Detail engineering contractor to provide the details in their drawings. XXX(公司名) has no objection if Sinochem wants to move the valve downstream of the drain. MOV的详细设计不在XXX(公司名)的工作范围之内。工程承包商将提供给那些图纸的详细设计。如果中化想要移动排凝下游阀,XXX(公司名)也不反对。 However XXX(公司名)’s opinion on the subject is as follows: 但是XXX(公司名)在这个问题上面有以下几个建议; If full credit for proper operation is taken, the operator stops the pump before he closes the MOV, and no interlock is then required. 如果操作工能按照操作程序要求,严格执行先关闭MOV,后停泵,则没有必要设计连锁控制 If full credit for proper operation cannot be taken, then some kind of interlock is desirable. Several levels of interlock are possible. Here are some possibilities. 如果不按照正常操作程序严格执行,那么就有必要保留一些连锁装置。但是有一些等级的连锁是必须的。下面有一些建议供参考。 1. Simplest: 1.最简单的设计。 a. Any switch that commands the MOV to close will also stop the pump. 关闭MOV的同时泵也停止运转。 b. Provide an open position and closed position switch on the valve, with position indication in the DCS, but no interlock between the position switches and the pump. 在DCS上面显示有阀门处在打开,关闭位置开关所处位置,但是在泵和开关之间没有连锁。 2. Simple but more prone to spurious trips: 简单但是更倾向于不合理的步骤: a. Provide an open position and closed position switch on the MOV, with position indication in the DCS. 在DCS上显示有阀门处在打开,关闭位置时开关所处位置。 b. If the open position switch signal indicates that the valve is "not open", then automatically trip the pump. 如果开关处在打开位置时显示的是没有打开,那么泵自动跳下。 3. Slightly more complex, not prone to spurious trips: 稍微有点复杂,比较的步骤: a. Any switch that commands the MOV to close will also stop the pump. 关闭MOV的同时泵也停止运转 b. Provide an open position and closed position switch on the MOV, with position indication in the DCS. 在DCS上显示有阀门处在打开,关闭位置时开关所处位置 c. The switch open position switch must indicate that valve is open as a permissive to start the pump. 阀门处于打开位置时,开关必须显示开,这是开泵的先决条件。 It is up to SinoChem to determine the type of interlock, if any, that they prefer. 如果这是中化确定的连锁类型,更好。 Steam lines have to be designed as per ASME SECT Ⅰ code. Detail engineering contractor to provide the details. 蒸汽管网设计都是按照ASME SECT I标准设计的。详细设计将由工程承包商提供。 XXX(公司名) has no objection if Sinochem / lpec wants to add. Sinochem to send deviation request for same. 如果中化/洛阳院想要增加的话XXX(公司名)也不反对。但是中化要发送同样的要求到XXX(公司名)不能有偏差。 XXX(公司名) does not see the need for a filter. XXX(公司名)认为不需要 过滤器 。 Details of MOV are outside the XXX(公司名)’s scope of work. Detail engineering contractor to provide the details in their drawings. XXX(公司名) has no objection if Sinochem wants to move the valve downstream of the drain. MOV细节设计不在XXX(公司名)的工作范围之内。工程承包商将提供给那些图纸的细节。如果中化想要移动排凝下游阀,XXX(公司名)也不反对。查看更多 2个回答 . 5人已关注
简介
职业:北京福陆工程管理有限公司 - 销售工程师
学校:四川师范大学 - 化学与材料科学学院
地区:江苏省
个人简介:爱情原如树叶一样,在人忽视里绿了,在忍耐里露出蓓蕾。查看更多
已连续签到天,累积获取个能量值
  • 第1天
  • 第2天
  • 第3天
  • 第4天
  • 第5天
  • 第6天
  • 第7天
 
这是一条消息提示
 
提醒
您好,您当前被封禁天,这天内您将不能登陆盖德问答,离解封时间还有
我已了解
提醒
提问需要5个能量值,您当前能量值为,请完成任务提升能量值
去查看任务