Apparatus for ammonia synthesis
Apparatus is described for the synthesis of ammonia, comprising: a first vertical synthesis reactor comprising a first reactor shell and a first catalyst bed contained in a first catalyst holder positioned within and spaced apart from the first reactor shell to provide a first annulus between the first catalyst holder and the first reactor shell to allow feed gas to enter the first catalyst bed; a second vertical synthesis reactor comprising a second reactor shell and a second catalyst bed contained in a second catalyst holder positioned within and spaced apart from the second reactor shell to provide a second annulus between the second catalyst holder and second reactor shell to allow feed gas to enter the second catalyst bed; a gas-gas heat exchanger; a first coupling means for coupling the bottom end of the first reactor to the gas-gas heat exchanger, the first coupling means having a first conduit between the fist annulus and the gas-gas heat exchanger for passage of feed to the first catalyst bed and a second conduit to pass effluent from the first catalyst bed to the gas-gas heat exchanger; a second heat exchanger comprising an exchanger shell having disposed therein a first tube bundle and a second tube bundle disposed in an interior portion of the exchanger shell inside of the first tube bundle; a second coupling means for coupling the bottom end of the second reactor to the second heat exchanger, the second coupling means having a third conduit between the second annulus and the outlet of the first tube bundle for passage of feed to the second catalyst bed and a fourth conduit to pass effluent from the second catalyst bed to the second tube bundle; and a fifth conduit to pass effluent from the gas-gas heat exchanger to the inlet of the first tube bundle.
- Assignee:
- C. F. Braun, Inc., Alhambra, CA (United States)
- Patent Number(s):
- US 5236671; A
- Application Number:
- PPN: US 7-586760
- OSTI ID:
- 6157251
- Resource Relation:
- Patent File Date: 24 Sep 1990
- Country of Publication:
- United States
- Language:
- English
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