D - Textiles – Paper – 06 – B
Patent
D - Textiles, Paper
06
B
8/93.6
D06B 1/00 (2006.01) D06M 11/61 (2006.01)
Patent
CA 1078109
PROCESS AND APPARATUS FOR RECOVERY AND REUSE OF AMMONIA IN A LIQUID AMMONIA FABRIC TREATING SYSTEM Abstract of the Disclosure The disclosure is directed to a system for the recovery of spent ammonia, in connection with the processing of fabrics and the like with liquid ammonia, and concerns particularly the elimination from the recovered ammonia of undesired water. Economic processing of fabrics by liquid ammonia requires recovery and reuse of substantial quantities of ammonia. In the course of processing, the ammonia unavoidably becomes contaminated with water. Separation of water from ammonia on a laboratory level or, in any kind of batch processing is a theoretically simple matter and can be coped with by conventional differential evapo- ration techniques, or otherwise. However, in a continuously operating processing line where large quantities of anhydrous liquid ammonia are being used as the treating medium, water accumulates rapidly, not only from the fabric being processed, but also from a certain inevitable amount of air leakage in the system, Because so much of any given increment of the treating medium must be recycled, as compared to that actually "used up" in the treating process, water accumulates rapidly in the system and must be removed on a continuous basis. The specification discloses a unique and highly efficient procedure for removal of water by effecting condensation of water and ammonia vapors, con- stituting the process effluent, by feeding the effluent to a de- superheating vessel, where it is brought into direct contact with a body of low temperature liquid ammonia. This is done in con- junction with a preliminary low temperature condensation of the effluent in a non-contact heat exchange stage. The condensed body of liquid ammonia in the desuperheater vessel, including residual condensed water from the process effluent combined with re-lique- fied ammonia, forms the feed supply of liquid ammonia solution to the process. The condensed water, which in the new process constitutes a portion of the feed supply, is applied to the fabric being treated, along with the liquid ammonia. Typically, some of the water is carried away with the processed fabric as a con- stituent of its moisture content. The remainder, which is driven off as steam in the process, is recycled. - 1a -
263240
LandOfFree
Process and apparatus for recovery and reuse of ammonia in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and apparatus for recovery and reuse of ammonia in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for recovery and reuse of ammonia in a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-930417