Method and apparatus for the direct reduction of iron

C - Chemistry – Metallurgy – 21 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

53/24

C21B 13/00 (2006.01)

Patent

CA 2014308

A process for the direct reduction of iron-containing metal oxides to obtain iron is disclosed in which a reformed reduction gas rich in H2 and CO and having an oxidation degree in the range of from about 0.30 to about 0.35 is formed and reduction is carried out simultaneously in a single reaction zone of a reduction reactor. The reformed reduction gas is formed using a highly endothermic reaction during which a mixture of heated natural gas, recycled top gas and air, preferably oxygen enriched air, is placed into contact with heated surfaces of DRI metallized iron in the reaction zone. The resulting reformed reducing gas consists essentially of from about 45% to about 48% hydrogen, from about 32% to about 34% carbon monoxide, from about 2% to about 4% carbon dioxide, from about 1% to about 3% methane, from about 14% to about 16% nitrogen and from about 1% to about 3% water vapor.

On divulgue une méthode pour la réduction directe d'oxydes métalliques renfermant du fer et permettant d'obtenir ce dernier. Dans cette méthode, un gaz de réduction réformé, riche en H2 et en CO, et possédant un degré d'oxydation d'environ 0,30-0,35 est produit , et la réduction est effectuée simultanément dans une seule zone de réaction d'un réacteur de réduction. Le gaz de réduction réformé est produit par une réaction fortement endothermique, pendant laquelle un mélange de gaz naturel chauffé, de gaz de gueulard recyclé et d'air, de préférence de l'air enrichi en oxygène, est mis en contact avec des surfaces chauffées de fer métallisé de réduction directe (DRI) dans la zone de réaction. Le gaz réducteur réformé résultant est constitué essentiellement d'environ 45- 48 % d'hydrogène, d'environ 32-34 % de monoxyde de carbone, d'environ 2-4 % de dioxyde de carbone, d'environ 1-3 % de méthane, d'environ 14-16 % d'azote et d'environ 1-3 % de vapeur d'eau.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for the direct reduction of iron does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for the direct reduction of iron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the direct reduction of iron will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1359743

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.