Abstract: A method and device for producing ammonia from a syngas in a heterogeneous gas catalysis process in at least two reaction devices connected in series. Each reaction device includes at least two catalyst beds through which the syngas is conducted and in which an at least partial conversion of the syngas into the product gas is carried out. At least one first heat exchanger is provided in the first reaction device, and the fresh syngas is pre-heated in the first heat exchanger. The syngas exiting the first catalyst bed and which includes the product and non-converted reactants is cooled before entering the second catalyst bed. According to an embodiment of the invention, the pre-heating process is carried out in a first heat exchanger arranged between the first and the second catalyst bed. Thus, synthesis conversion can be increased without substantially increasing the process gas quantity.

Abstract: A process and a device for the production of ammonia at different pressure levels may involve removing gases that are inert (inert gases) or harmful with regard to ammonia synthesis from the process in a process step before the ammonia synthesis so that enrichment of these is decreased or suppressed. For example, with respect to a gas mixture that includes hydrogen, nitrogen, water, methane, carbon monoxide, and carbon dioxide, at least part of the water, at least part of the methane, at least part of the carbon monoxide, and at least part of the carbon dioxide may be removed from the gas mixture before the synthesis of the ammonia occurs.

Abstract: A method and device for producing ammonia from a syngas in a heterogeneous gas catalysis process in at least two reaction devices connected in series. Each reaction device includes at least two catalyst beds through which the syngas is conducted and in which an at least partial conversion of the syngas into the product gas is carried out. At least one first heat exchanger is provided in the first reaction device, and the fresh syngas is pre-heated in the first heat exchanger. The syngas exiting the first catalyst bed and which includes the product and non-converted reactants is cooled before entering the second catalyst bed. According to an embodiment of the invention, the pre-heating process is carried out in a first heat exchanger arranged between the first and the second catalyst bed. Thus, synthesis conversion can be increased without substantially increasing the process gas quantity.

Abstract: A process for humidifying a gas stream in a humidifier chamber by passing heated water downwardly through the humidifier and passing gas upwardly through the chamber to transfer water vapor to the gas stream. One or more portions of the water is removed at an intermediate stage in the chamber and the remaining portion of the water collected at the bottom is removed. The intermediate portion and final portion may have make-up water added thereto and the portions are reheated either separately or as a combined mixture. The process provides an improved economic method for humidification with good energy savings.