C - Chemistry – Metallurgy – 01 – C
Patent
C - Chemistry, Metallurgy
01
C
23/217
C01C 1/04 (2006.01) C01B 3/22 (2006.01) C01B 3/34 (2006.01)
Patent
CA 1117735
Abstract In a process for producing a hydrogen containing gas by reacting steam with a feedstock to give a gas at a temperature of at lest 350°C, generating high pressure steam by heat exchange with such a gas, letting down the steam in an expansion engine of the pass-out type and using engine exhaust steam as process feed, an improvement in energy economy is achieved by bringing the engine exhaust steam into heat exchange with water and contacting the result- ing hot water with a gaseous or vaporised feed to the process. The steam exhausted from the engine is preferably at a pressure lower than that at which the steam-using process step is operated. The process is especially useful in ammonia production by way of steam hydrocarbon reforming at an unconventionally high pressure in the range 40 - 80 bar abs., followed by synthesis at a pressure not more than 50% higher. Referring to the drawing, steam generated at 60 bars abs, by inter alia heat exchange with secondary reformer effluent at 30 is superheated and let down in turbine 104 to 19.1 bar abs. The turbine effluent steam is subjected to direct heat exchange with warm water in tower 120 to give a pressurized hot water stream which then is contacted in tower 128 with natural gas feed the pressure of which is 26.1 bar abs. The mixture receives an addition of steam at 132, is preheated at 24 and reacted over a catalyst in tubes 22 heated in steam reforming furnace 10.
331299
Imperial Chemical Industries Limited
Roussin Bernard F.
LandOfFree
Hydrogen does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrogen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrogen will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-855498