| 摘要 |
1469386 Forced circulation crystalliser HOOKER CHEMICALS & PLASTICS CORP 18 July 1975 [5 Aug 1974] 30228/75 Heading BIG An integral forced circulation cooling crystalliser comprises in vertical disposition, as shown in Fig. 1, (a) a upper fluid holding chamber 5 having a fluid inlet section 19 and inlet 27 and an outlet section 21 and outlet 29 and a vertical partition 13 positioned to permit fluid flow between the inlet and outlet sections in the upper region thereof but not in the lower region thereof; (b) a heat exchange chamber 3 comprising a number of separate vertical tubular elements 11, a fluid inlet 31 and outlet 33 for the heat exchange fluid which flows around the outside of the tubular elements 11, and a number of horizontal baffles 25 to direct the flow of heat exchange fluid upward in a horizontally alternating path around the outside of the tubular elements of the heat exchanger; (c) a lower pump chamber 1 having a vertical partition 7 to provide an intake section 15 and a discharge section 17 and having a pump 9 displaced therein to circulate the fluid being therein to circulate the fluid being crystallised; the tubular elements 11 of the heat exchanger being arranged so that part provide direct fluid communication between the inlet section 19 of holding chamber and intake section 15 of pump chamber and part provide direct fluid communication between the corresponding sections 21 and 17 and whereby the fluid to be crystallised is circulated by the pump 9 from inlet section 19 down through part of the heat exchanger through the pump chamber section 15 and 17 and up through the other part of the exchanger to outlet section 21 where a portion of the fluid circulating is withdrawn through outlet 29 while a portion flows over the top of partition 13 and is recirculated with the fluid entering at inlet 27. The partition 13 may be adjustable for height to provide a greater degree of control.
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