Falling film freeze exchanger

A falling film freeze exchanger comprising:

• a plurality of spaced apart vertical freeze tubes secured in, and penetrating, an upper and a lower tube sheet;
• a cover above the upper tube sheet;
• a shell around the tube sheets and connected thereto, with said cover supported by the shell;
• the upper ends of the freeze tubes extending above the upper tube sheet and the lower ends of the freeze tubes not being enclosed by the shell;
• means to deliver a liquid feed stream into a feed box between the upper tube sheet and the cover;
• and
• means to deliver a cooling fluid around the tubes inside of the shell between the upper and lower tube sheets and means to remove cooling fluid therefrom.

A falling film freeze exchanger comprising:

• a vessel having a top, bottom and side wall enclosing a liquid feed box in the bottom portion, and a cooling fluid space in the top portion separated by an insulated tube sheet;
• a plurality of freeze tubes, supported by the tube sheet, extending downwardly in the feed box and out through holes larger than the freeze tubes in the vessel bottom;
• means to deliver a liquid feed stream into the feed box;
• and
• means to deliver a cooling fluid into the cooling fluid space and means to remove cooling fluid therefrom.

A falling film freeze exchanger comprising:

• a vessel having a top, bottom and side wall enclosing a liquid feed box in the bottom portion, and a cooling fluid space in the top portion separated by a tube sheet;
• a plurality of freeze tubes, supported by the tube sheet, extending downwardly in the feed box and out through holes larger than the freeze tubes in the vessel bottom;
• the freeze tube portions inside of the liquid feed box being insulated;
• means to deliver a liquid feed stream into the feed box;
• and
• means to deliver a cooling fluid into the cooling fluid space and means to remove cooling fluid therefrom.

A falling film freeze exchanger comprising:

• a vessel having a top, bottom and side wall enclosing a liquid feed box in the bottom portion, and a cooling fluid space in the top portion separated by a tube sheet;
• a plurality of freeze tubes, supported by the tube sheet, extending downwardly in the feed box and out through holes larger than the freeze tubes in the vessel bottom;
• means to deliver a liquid feed stream into the feed box;
• means to remove excess liquid feed from the feed box;
• and
• means to deliver a cooling fluid into the cooling fluid space and means to remove cooling fluid therefrom.

A falling film freeze exchanger comprising:

• a vessel having a top, bottom and side wall enclosing a liquid feed box in the bottom portion, and a cooling fluid box in the top portion separated by a first tube sheet;
• a second tube sheet located in the vessel above the first tube sheet, thereby dividing the cooling fluid box into an upper section between the second tube sheet and the vessel cover and a lower section between the first and second tube sheets;
• a plurality of freeze tubes, supported by the tube sheet, extending downwardly in the feed box and out through holes larger than the freeze tubes in the vessel bottom;
• means to deliver a liquid feed stream into the feed box;
• means to deliver a cooling fluid into the cooling fluid box and means to remove cooling fluid therefrom;
• the means for delivering cooling liquid communicating with the cooling fluid box upper section and the means for removing cooling liquid communicating with the cooling fluid box lower section;
• and
• a cooling liquid delivery tube extending from the second tube sheet into each freeze tube.