Study On The Simulation And Reform Of CO Cryogenic Separation

Carbon monoxide plays a very important role in modern industry. With the increasing development of C1chemistry, carbon monoxide has become a momentous raw material of a series of basic organic chemical products and intermediates. Owing to the low price and abundance as well as advanced separation technique, the further growth of carbon monoxide chemical process will be greatly promoted.There are mainly two ways to obtain carbon monoxide in industry. One is the preparation of carbon monoxide synthesis gas from coal gasification, natural gas or oil steam reforming, partial oxidation and so on. The other is carbon monoxide recovery from industrial exhaust which is discharged by coking, steelmaking, the production of yellow phosphorus, calcium carbide, acetic acid, etc. Otherwise, the carbon monoxide-rich gas utilization not only reduces the emissions and increases performance of enterprises, but also be helpful for environmental conservation and human health. In fact, carbon monoxide in the above two ways is present in the mixture. In order to get high-pure carbon monoxide, separation process of low energy consumption and cost, and high efficiency has been sought for decades. Cryogenic separation method can effectively obtain high purity gases and is suitable for large-scale production. However, the complicated process and high equipment investment make it crucial for potential tapping and energy savings.The general simulation software is applied to simulate the carbon monoxide cryogenic separation. Since the whole system technology is very complicated, we calculate every block respectively, and then assemble all the blocks step by step to complete the whole simulation. Based on the successfully simulated analysis of the first plant’s design working condition, an improvement scheme is proposed according to the great change in feedstock, proving necessary technical support and theoretical guidance for the factory reconstruction. What’s more, an optimization scheme is made based on the primary process, to be used as a reference for potential-digging revamping. Finally, a new process is designed and simulated, meeting the second plant’s production requirements.