| 摘要 |
<p>1,172,636. Making coke and carbon black. PEABODY COAL CO. 12 July, 1968 [11 Dec., 1967], No. 33493/68. Heading C5E. [Also in Division C1] Coke and carbon black are produced simultaneously by continuously feeding a flat coal bed through a carbonizer for partial combustion with air to produce partial coking, reaction of the air with part of the hydrocarbons, and cracking of unreacted hydrocarbons, to form carbon black which is carried by the combustion gases via 64 to a filter 68 where it is recovered. Coking is completed in a shaft furnace. The pressure in the carbonizer must be controlled by a damper 70 so that it never falls below 0 inches of water, thus preventing the ingress of air and burning of carbon black. A pressure of 0À05 to 0À1 inch of water may be maintained. Air for combustion is preheated at 36 by gases from 32, 34 which pass to the cooler 28 via 38, 42. The heated air is delivered to separate zones in the carbonizer (see Fig. 2, not shown).</p> |
