| 摘要 |
<p>Titanium tetrachloride is produced by treating a mixture of an oxygenated titanium-containing material and carbon in a furnace with chlorine and oxygen separately so that the mixture is first chlorinated and then oxidized and the heat generated in the oxidation is utilized in the chlorination. The oxygenated titanium-containing material (preferably rutile) is preferably used as briquettes containing 18 to 23% by weight of coal, and in addition from 5 to 15% by weight of loose pieces of coal, with respect to the briquettes, may be added to the furnace. In the <PICT:0929207/III/1> Figure, air at room temperature, or a mixture of air and oxygen, is fed through inlet 2 to the heated furnace and meets a first layer of coal pieces in which combustion takes place and the resulting gases are mixed with chlorine introduced at room temperature through inlets 3 thus preheating the chlorine and coal pieces in this layer to the reaction temperature. The coal layer in the furnace is kept constant by adding coal pieces and briquettes through hopper 6. As the titanium-containing material is chlorinated, the unconsumed coal pieces sink to the layer below chlorine inlets 3 where combustion with air takes place, the desired level being controlled by withdrawing samples through pipes 4. The reaction products are removed through pipe 5.</p> |
