| 摘要 |
A process for producing ammonia synthesis gas from a hydrocarbon source, comprising: conversion of the hydrocarbon source into a raw synthesis gas (14) in ATR or POX reactor (11) which is fired with oxygen (12) or oxygen-enriched air (28); a water-gas shift treatment of the raw synthesis gas (14), which consist of a medium-temperature shift (15) at a temperature of 200 –300 °C, thus obtaining a shifted synthesis gas (16); purification of said shifted synthesis gas (16) including at least a step of pressure-swing adsorption (17) to remove residual carbon oxides and methane from the synthesis gas, obtaining a purified synthesis gas (18), and optionally, addition of nitrogen (19) to said purified synthesis gas (18), thus obtaining ammonia synthesis gas with a desired hydrogen to nitrogen ratio. |
