公开(公告)号：US06514310B2

公开(公告)日：2003-02-04

申请号：US09912533

申请日：2001-07-26

申请人： Bruno Allemand ,  Christel Champinot ,  Stéphane Melen ,  Jean-Claude Vuillermoz ,  Sabastien Flichy ,  Jacky Laurent

发明人： Bruno Allemand ,  Christel Champinot ,  Stéphane Melen ,  Jean-Claude Vuillermoz ,  Sabastien Flichy ,  Jacky Laurent

IPC分类号： C21C7072

CPC分类号： C21C5/5217 ,  C21C5/4606 ,  Y02P10/143 ,  Y02P10/216

摘要： The electric arc furnace is equipped with a supersonic injector comprising a so-called Laval nozzle arranged at a certain distance above the bath. The dimensions of the nozzle are calculated as a function of the desired flow rate of oxygen and the desired velocity of the jet, and the pressure of the oxygen at the intake of the nozzle is such that the static pressure of the jet at the exit of the injector is substantially equal to the pressure of the surrounding atmosphere. Preferably, the injector comprises an annular channel for injection of natural gas, and can be used in burner mode at the start of the melting of scrap iron. The velocity of the oxygen is then subsonic.

摘要翻译： 电弧炉配备有超音速喷射器，其包括布置在浴上方一定距离处的所谓拉瓦尔喷嘴。 喷嘴的尺寸根据期望的氧气流速和喷射的期望速度计算，并且喷嘴入口处的氧气的压力使得喷嘴出口处的喷嘴的静压力 喷射器基本上等于周围大气的压力。 优选地，喷射器包括用于喷射天然气的环形通道，并且可以在废铁熔化开始时以燃烧器模式使用。 然后氧气的速度是亚音速。

公开(公告)号：US07147460B2

公开(公告)日：2006-12-12

申请号：US10363516

申请日：2001-09-10

申请人： Olivier Negro ,  Sami Dick ,  Marc Leturmy ,  Stéphane Melen

发明人： Olivier Negro ,  Sami Dick ,  Marc Leturmy ,  Stéphane Melen

IPC分类号： B29C35/04

CPC分类号： B29C45/1701 ,  B29C45/1816 ,  B29C47/0009 ,  B29C47/10 ,  B29C47/1063 ,  B29C47/1072

摘要： The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening O allowing the gas to be ejected at right angles to its direction of flow in the pipe.

摘要翻译： 本发明涉及通过在惰性气氛中形成塑料制品的装置，该装置包括料斗，进料螺杆和用于形成聚合物熔体的装置。 用于注入惰性气体的装置包括气体供给管，靠近料斗的壁的气体注入表面和装配在料斗的壁和气体供给管之间的均质室。 朝向注射表面的气体供给管的端部是封闭的，并且具有至少一个径向开口O，允许气体与其在管道中的流动方向成直角喷射。

公开(公告)号：US06458330B1

公开(公告)日：2002-10-01

申请号：US09738314

申请日：2000-12-18

申请人： Panayotis Cocolios ,  François Coeuret ,  Wolfgang Döring ,  Franck Förster ,  Jean-Louis Gelot ,  Bernd Martens ,  Stéphane Melen ,  Eckhard Prinz ,  Jean-Yves Thonnelier ,  Alain Villermet

发明人： Panayotis Cocolios ,  François Coeuret ,  Wolfgang Döring ,  Franck Förster ,  Jean-Louis Gelot ,  Bernd Martens ,  Stéphane Melen ,  Eckhard Prinz ,  Jean-Yves Thonnelier ,  Alain Villermet

IPC分类号： B01J1908

CPC分类号： C23C16/45519 ,  C23C16/4412 ,  C23C16/455 ,  C23C16/45563 ,  C23C16/545 ,  G05D7/0676

摘要： Optimization of an installation in which an operation is performed that requires control over the atmosphere inside a chamber (3), the operation being performed in the presence of a gaseous mixture capable of giving off emissions, the optimization being obtained by the presence of inlet (5) and outlet (8) devices external to the chamber to oppose the ingress of air into the chamber and the exit of gaseous emissions; and of an extraction device (4) comprising means (42) for regulating the flow rate to maintain an approximately zero pressure differential between the inside and the outside of the chamber.

摘要翻译： 优化其中进行操作的装置，其需要控制室（3）内的大气，该操作是在存在可释放排放物的气体混合物的情况下进行的，优化是通过入口（存在 5）和出口（8）设备外部的装置，以反对空气进入室和气体排放物的出口; 以及包括用于调节流速以在腔室的内部和外部之间保持近似零压力差的装置（42）的提取装置（4）。