| 摘要 |
PURPOSE:To perform the uniform distribution of powdered coal subject to pneumatic conveyance in a simple structure, by installing a stagnant region in the terminal part of a vertically upward conveying pipe, while connecting plural horizontal conveying pipes to the lower part of the said region via a small diametral part. CONSTITUTION:In case of a device, using nitrogen or the like as a conveying gaseous body, that pneumatically conveys powdered coal to a branched conveying device 7 from a conveying pipe and uniformly conveys the powdered coal to a coal gasifier furnace or the like from the said device 7 after being plurally dispersed, the branched conveying device 7 is composed of a straight pipe conveying part 10, a branched part 11 at the terminal of the said conveying part 10, and plural horizontal conveying part 13 installed extendedly toward a right-angled direction to this branched part 11. At this time, the diameter of a junction part with the straight pipe conveying part 10 of the plural horizontal conveying part 13 is made to be thined as compared with that of the horizontal conveying part 13. In addition, a stagnant part 12 is installed in the more upper traight pipe conveying part than the said junction part. With this method, a mixed stream 14 of the powdered coal and the conveying gaseous body is led into the stagnant part 12 and, after being turned over hereat, led into the horizontal conveying part 13 so that uniform dispersion can be thus attained. |
