| 摘要 |
<p>An injection valve (10) for reactors is used both for injecting into reactors (2) and for taking samples from reactors. For taking samples, the valve (10) is opened, so that the liquid, usually a polymer melt, is forced out of the reactor (2) by the pressure prevailing in the reactor (2). The liquid forced out can then be analysed. The valve is expediently provided with heating (37), sealing (17) as well as shutting-off and feeding mechanisms (28, 29, 26). Installing these valves (10) widens the applications of the reactor (2). For instance, the valves (10) according to the invention can not only be used everywhere where commercially available valves can be used, but also in areas of operations in which previously customary valves cannot be used, for example in reaction extruders.</p> |
