| 摘要 |
PRODUCTION OF PURIFIED SYNTHESIS GAS AND CARBON MONOXIDE (D#76,169-F) A continuous process for simultaneously producing(1) a stream of purified synthesis gas having a controlled mole ratio H2/CO, and (2) a separate stream of CO-rich gas. Methanol may be synthesized from the purified synthesis gas and reacted with CO to produce acetic acid. In the process, raw synthesis gas from a noncatalytic partial-oxidation gas generator is cleaned (if necessary), cooled, and dehumidified. At least a portion of the resulting gas stream is then partially purified by removing H2S and COS if present, and at least a portion of the CO2 in a first gas purification zone. The remainder of the clean dehumidified gas stream if any, by-passes the first gas purification zone. Partially purified gas from the first gas purification zone is introduced into a second gas-purification or separation zone and at least a portion of the remainder if any, by-passes the second gas purification zone. A product stream of CO-rich gas and a separate stream of H2-rich gas is removed from the second gas purification zone. The product stream of purified synthesis gas may be then produced by mixing together at least a portion of said H2-rich gas stream with at least a portion of at least one of the following by-pass gas streams:(a) gas processed in the first gas purification zone that by-passes the second gas purification zone; (b) clean dehumidified gas that by-passes the first gas purification zone. I |
