UNIT OF AN AMMONIA PLANT AND AMMONIA PLANT INCLUDING THIS UNIT, AS WELL AS A METHOD FOR STARTING UP THE FRONT END OF AN AMMONIA PLANT

摘要

The invention relates to a unit of an ammonia plant, comprising a) a front end for an ammonia plant, including a primary reformer (3), a secondary reformer (4), a HTS catalyst (5) and an LTS catalyst (6) and optionally a methanator (7) as components; and b) at least one natural gas compressor (1), designed and configured for compressing natural gas and for compressing nitrogen, wherein the unit is designed and configured such that nitrogen compressed by the natural gas compressor (1) can be directed, in a gaseous, heated form, through the primary reformer (3), secondary reformer (4), HTS catalyst (5), LTS catalyst (6) and/or methanator (7). The invention also relates to an ammonia plant comprising the unit according to the invention. The invention further relates to a method for starting up the front end of an ammonia plant, comprising, inter alia, the provision of a unit according to the invention. Finally, the invention relates to the use of a nitrogen circuit for heating, in particular starting up, at least one component or a plurality of components of the front end of an ammonia plant, in particular for heating, in particular starting up, the front end of an ammonia plant.