1 results about "Co product" patented technology

The application discloses a method for improving CO recycling rate in a carbonyl nickel production line and belongs to the technical field of carbonyl nickel refining. The method is aimed at the industry pain point that N2 enrichment in the CO recycling process in the carbonyl nickel production leads to inefficient recycling of CO. Unreacted CO-containing synthesis tail gas from a synthesis kettle and decomposition CO generated by decomposition of carbonyl nickel are collected together as a gas to be purified and recovered, pressurized to 0.3-0.5 MPa, and then sent to a pressure swing adsorption CO purification device filled with copper adsorbent, so that N2 impurities in the gas are removed, high-purity CO product gas with a CO purity of greater than or equal to 98% and an N2 content of less than or equal to 1% is obtained, and the gas is sent back to the synthesis kettle for recycling. The application completely solves the problem of N2 enrichment, realizes efficient recycling of all the CO, improves the recycling rate to more than 95%, greatly reduces the production cost, improves the efficiency of the carbonylation reaction, reduces the safety and environmental protection risks, and has the advantages of simple process, good economy and easy industrialization.