| 摘要 |
1501284 Gasifiers SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 2 May 1975 [30 May 1974] 18550/75 Heading C5E A gasifier comprises a gasification chamber 3 defined by a water tube wall structure 2 composed of tubes 4 joined to headers 5, 6, the tube wall structure being separated from the outer pressure shell 1 by layers 11, 12 of insulating material; to facilitate dismantling of the apparatus, the layers 11, 12 are separable along parting boundary 13 and the tube wall structure is removable as a unit, the outer pressure shell being dismantlable by releasing flange connectors 39. A further parting boundary 34 is provided in layer 12 at the level of lower header 6. A layer 10 of refractory tamping compound protects the tube wall structure from the flames in the chamber 1. In use, a mixture of powdered coal and oxygen is fed to burners 16, gases are discharged through water-cooled outlet 18, and slag through a water-cooled discharge shaft 23. An oxygen lance 32 burns off any slag deposits which form in outlet 21. |
