| 摘要 |
<p>PIG LAUNCH AND RETRIEVAL SYSTEM A method of launching a pig into and retrieving a pig from a path in tubing, for example through a furnace, by directing fluid flow into the path through the pig launcher/retriever (18) during launch and fluid flow out of the path through the pig launcher/retriever (18) during retrieval. - 1/4 Downstream 16- Feedstock 5 Outlet 6 3 0' Furnace Outlet Upstream Feedstock Inlet murace Fig. 1</p> |
