IMPROVEMENT OF LOW-TEMPERATURE LIQUID CARBON DIOXIDE PRODUCTION IN THE CYCLES OF MEDIUM PRESSURE
DOI:
https://doi.org/10.18198/j.ind.gases.2013.0668Keywords:
Carbamide, Carbon dioxide, Ammonia, СО2 condensation, Liquid ammonia cold, Specific power inputs, Increasing the productivity, Compressor-pumping unitAbstract
Carbon dioxide is a marketable product. Large quantities of the product are used for carbamide production. The designs of two installations for obtaining liquid low-temperature СO2 in the cycle of medium pressure with subsequent feeding it into the units of carbamide synthesis are considered. In the first one for СО2 condensation the use of the liquid ammonia cold has been suggested; in the second one - the cold of an absorptive ammonia-water refrigerating unit has been proposed. Liquid carbon dioxide from these installations is moved by the pump to the carbamide production unit. The specific power inputs for carbon dioxide liquefaction and feeding with the pressure level of 15 MPa in both installations were lower by 25 % than in the compressor lines used nowadays.
References
Patent of Russia No. 2376537. Method of liquifaction of carbon dioxide / МПК F 25J 1/02.
Patent of Russia No. 2380629. Installation for liquefaction of carbon dioxide/ МПК F 25J 1/00.
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