神奇的催化剂英语

三元催化剂 Three-Way Catalyst求采纳

Hydrogen cyanide is another gaseous effluent in cases where it is not recovered for further use-it can be burned. 氰化氢是在不回收供进一步利用时的另一种气体排放物，它可以被烧掉。Process economics .工艺的经济学。Materials and utilities ，within battery limits , for 1,000 kg pure acrylonitrile produced are shown in TABLE 1. by-products recoveries are shown in table 2在界区范围内，对于产生的1000kg纯丙烯腈来说，材料和功用示于表1。Hydrogen cyanide is obtained as a gas of more than 99.5 percent purity and needs no further treatment for several reactions . acetonitrile can be recovered in a series of distillation columns from the 70 percent solution produce . montecatini Edison has developed and tested commercially such a process where the acetonitrile meet current specifications for several uses i.e butadiene extraction 氰化氢是作为超过95％纯度的气体而获得的，而且不需要进一步处理就可用于好几种反应，丙烯腈可以用一系列的蒸馏塔从70％的溶液而回收。Montecatini Edison已经在商业上开发并试验了一种工艺，在这种工艺中，丙烯腈能满足用于若干应用的现用规范，其中包括用于丁二烯的萃取。Product specifications of acrylonitrile are given in table 3 丙烯腈的产品规范在表3中给出。Investment and capital fees may be assessed from the cost of 12.6 billion Italian lire for a 120,000-metric-ton/year plant投资和资金费用可以根据12万公吨/年的工厂126亿意大利里拉的成本加以估算。 This industrial process and its performance are the result of extended work by the company’s staff in the laboratory ,pilot plant ,process design and engineering before the start of the commercial plant and careful refinement of operating conditions and experience gained in operation of the plant itself . 这一工业化的工艺及其绩效是公司员工在开始商业性生产，微调工作条件，获得工厂本身运作的经验前，于实验室、中试生产、工业设计和工程方方面广泛努力的结果Specific consumption on 1.2 kg of propylene per kg of acrylonitrile corresponds to a molar yield of about 66 percent for the over-all process . this corresponds to a reactor yield of 70 percent on the mole basis for large industrial reactors operating on a continuous basis .this is due to the out standing properties of the catalyst activity and life . because of its low bulk density ,small amounts of the catalyst are required thus reducing investment .the catalyst is low in cost because of its 70-80wt./wt. percent silica and the moderate costs of active components and ease of preparation.每公斤丙烯腈1.2kg丙烯的比消耗率相当于这个工艺大约66％的摩尔产率。这相当于连续工作的大型工业反应器在摩尔基础上70％的反应器产率。这是由于催化剂活性和寿命的杰出性能而导致的。因为其低的体积密度，所以催化剂所需的量少，从而降低了投资。因为其70－80wt/wt％二氧化硅，成本适中的活性成分和容易制备，所以催化剂的成本较低。 Steam consumption of 2.5 kg per kg of acrylonitrile is a balance between the 7 kg produce by heat recovery and the 9.5 kg consumed in the various process step .original devices have been developed and applied for the best heat recovery and best use of steam in the various columns. Complex equipment has been avoided in the purification section for easy and reliable operation . capital costs are not only affected by the number of columns ,but their simplicity , their size and construction materials must be considered 每公斤丙烯腈2.5kg的蒸汽消耗是在通过热回收的7kg产物和各个工艺步骤中9.5kg消耗之间的平衡。最初的装置已经研发出来，并用于最佳的热回收和最佳地利用各个蒸馏塔中的蒸汽。为了容易而可靠地工作，所以在纯化阶段避免了复杂的设备。资金成本不仅受到蒸馏塔数目的影响，而且它们的简单性，它们的尺寸和构成材料也必须加以考虑。Therefore ,the montecatint Edison process is competitive with other process .continuing studies are being made toward chemical and engineering improvement因此，Montecatini Edison的工艺与其他工艺相比是有竞争力的。对于化学上和工程上的改进正在进行继续的研究。

氢氰化物是另一气体的流出的在朝派cases,那里它未被为进一步使用-它罐是恢复烧过的.在电池限度内为生产 1,000千克纯粹丙烯腈过程经济学.Materials和公用事业被在1表中展示.副产品恢复被在桌子2氢氰化物存在中显示百分之99.5以上纯洁和不是必定进一步的几反作用的治疗的得到阿斯一气体是.acetonitrile是能从百分之70解决方案农产品收回在朝派一系列的蒸馏柱.montecatini爱迪生富人发展和测验商业上这样一列队前进地方 acetonitrile碰在一起潮流规格说明为几个我们i.e丁二烯摘取产品规格说明的丙烯腈公亩让步在朝派桌子3投资和资本费用有能力被估计从花费的0亿意大利的lire为a 120,000-公吨年种植这个工业股票列队前进和它的表现公亩随之发生的伸出工作在附近company’s工作人员在朝派实验室小规模试验性工厂列队前进设计在商业植物的出发和造成状况和经验的小心文雅它自己获得植物的在朝派运作之前,工程学.每丙烯腈的千克丙烯的特有的消耗右手击球员的左后方场地1.2千克为剩余物-所有的过程与一大约百分之66百分之的臼齿产量相符.这个为动手术按连续.this是的大工业起反应的人与一百分之70的按痣起反应的人产量相符在野派由于把催化剂活动和生活的小道具竖放.由于它的低体积密度,少量的催化剂公亩需要因此减少投资.the催化剂由于它的70-80wt./wt是低在朝派成本.百分之一硅石和中等活跃成分的成本和准备的安逸.每在各种各样过程步.original装置中消耗7千克农产品在附近热恢复和9.5千克之间丙烯腈存在一平衡的千克2.5千克的蒸汽消耗已经被发展和申请最好的最好热恢复和最好使用的冒蒸汽在朝派 the various columns. Complex equipment has been avoided in the purification section for easy and reliable operation . capital costs are not only affected by the number of columns ,but their simplicity , their size and construction materials must be considered Therefore ,the montecatint Edison process is competitive with other process .continuing studies are being made toward chemical and engineering improvement