Axial-radial reactors in the braun ammonia synloop with extrnal heat sink
AssigneeBrown & Root Petroleum and Chemicals
InventorBernard J. Grotz
Life of this patent
Estimating the term…
Abstract
The present invention discloses application of axial-radial reactors to the Braun synloop using an external heat sink between the feed/effluent exchanger and the inlet to the second reactor. The advantages of the axial-radial reactors in the Braun synloop have been heretofor unavailable for failure of the prior art to combine the advantages of the high conversion disclosed in U.S. Pat. No. 4,867,959 with axial-radial reactors.
Claims18
A method of ammonia synthesis using a two- or three-reactor synloop, the improvement comprising:
- a) raising the temperature of (a) an ammonia synthesis gas feed to a first reactor inlet temperature by indirect heat transfer in a feed/effluent exchanger;
- b) removing heat from the synthesis gas effluent from the first reactor first in the feed/effluent exchanger and then in a heat sink exchanger;
- c) feeding the ammonia synthesis gas from the heat sink exchanger to the second reactor;
- and
- d) providing axial-radial flow means for each reactor in the synloop.
A method of ammonia synthesis using a two- or three-reactor synloop, the improvement comprising:
- a) raising the temperature of (a) an ammonia synthesis gas feed to a first reactor inlet temperature by indirect heat transfer in a feed/effluent exchanger;
- b) removing heat from the synthesis gas effluent from the first reactor first in the feed/effluent exchanger and then in a heat sink exchanger;
- c) feeding the ammonia synthesis gas from the heat sink exchanger to the second reactor;
- and
- d) providing axial-radial flow means for the first reactor and axial flow means for subsequent reactors in the synloop.
Dependencies are inferred from the claim text.