| 摘要 |
<p>1,161,489. Cooling waste gases; steam generators. SIMON-CARVES Ltd. 9 Dec., 1966 [22 Dec., 1965], No. 54378/65. Headings F4A and F4S. A heat exchanger arrangement particularly for use in cooling waste gases from a steel making converter 10 comprises a first heat exchanger 12 through which the waste gases flow and in which they are cooled by an aqueous cooling fluid normally water, a second heat exchanger 14 for cooling the aqueous fluid and an interconnecting pipework 16 for recycling the aqueous fluid. As shown the exchanger 12 comprises annular headers 26, 28 interconnected by vertical tubes 22, the cooled waste gases leaving normally through a conduit 30 leading to a spray cooler and an electroprecipitator. Alternatively the gases may pass through conduit 32 directly to the atmosphere. The water after flowing through the heat exchanger 12 and into an expansion tank 56 is cooled in the heat exchanger 14 before being recycled by way of pipe 50 and pump 52. In the heat exchanger 14, the water flows along horizontal tubes 44 and is cooled by air induced by a fan unit 47. In a second embodiment (Fig. 3, not shown) wherein steam is generated within the first heat exchanger (112), the tank (156) acts as a phase separation means. Saturated steam passes into the second heat exchanger (114), is condensed and returned to the tank (156) for recycling. The water may circulate by natural convection, the pump being dispensed with.</p> |
