EP 0000993 A1 19790307 - Ammonia production process.
Title (en)
Ammonia production process.
Title (de)
Verfahren zur Herstellung von Ammoniak.
Title (fr)
Procédé pour la production d'ammoniac.
Publication
Application
Priority
- GB 3509677 A 19770822
- GB 4476677 A 19771027
- GB 4499677 A 19771028
Abstract (en)
[origin: US4298588A] An ammonia production process comprises steam hydrocarbon primary reforming, air secondary reforming, carbon monoxide hift, carbon oxides removal, ammonia synthesis and discarding of non-reactive gases and is made more economical in energy consumption by using excess air in secondary reforming and treating the synthesis gas to separate a hydrogen-enriched stream and returning that stream to the synthesis. Preferably the synthesis gas after carbon moxides removal is compressed if at all by no more than 50% and consequently the process can be carried out in a plant having a gas circulator but no compressor. Preferably synthesis is at a pressure in the range 40-80 bar abs. and at an outlet temperature in the range 350 DEG -430 DEG C. over a catalyst containing iron, cobalt and promoting compounds. Recovery of the hydrogen-enriched stream is preferably from a side stream of synthesis gas.
IPC 1-7
IPC 8 full level
C01B 3/02 (2006.01); C01B 3/38 (2006.01); C01C 1/04 (2006.01)
CPC (source: EP US)
C01B 3/025 (2013.01 - EP US); C01B 3/382 (2013.01 - EP US); C01C 1/0405 (2013.01 - EP US); C01C 1/0411 (2013.01 - EP US); C01C 1/0464 (2013.01 - EP US); C01B 2203/143 (2013.01 - EP US); C01B 2203/147 (2013.01 - EP US); C01B 2203/82 (2013.01 - EP US); Y02P 20/52 (2015.11 - EP US)
Citation (search report)
- US 2795559 A 19570611 - WHALEY THOMAS H
- GB 1460681 A 19770106 - PETROCARBON DEV LTD
- DE 1815532 A1 19700625 - LINDE AG
- US 3081268 A 19630312 - MARSHALL JR WALTON H
- DE 2212358 A1 19730920 - AZOTE & PROD CHIM
- GB 1115952 A 19680606 - SNAM SPA
- [D] GB 1156002 A 19690625 - C F BROWN & CO [US]
- [D] GB 1186939 A 19700408 - WHESSOE LTD
- [AD] GB 1156003 A 19690625 - BRAUN & CO C F [US]
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0000993 A1 19790307; EP 0000993 B1 19821208; CA 1124032 A 19820525; DE 2862117 D1 19830113; IT 1098269 B 19850907; IT 7826942 A0 19780822; JP S5460298 A 19790515; JP S6058165 B2 19851218; NO 158616 B 19880704; NO 158616 C 19881012; NO 782769 L 19790223; US 4298588 A 19811103
DOCDB simple family (application)
EP 78300276 A 19780810; CA 309759 A 19780821; DE 2862117 T 19780810; IT 2694278 A 19780822; JP 10223578 A 19780822; NO 782769 A 19780815; US 10529779 A 19791219