公开(公告)号：ZA200505912B

公开(公告)日：2006-12-27

申请号：ZA200505912

申请日：2003-11-14

Applicant: OUTOKUMPU OY

Inventor： MICHAEL STROEDER ,  STUART SNEYD ,  KLAUS HASSELWANDER

IPC: B01D20090101 ,  B01D53/12 ,  B01D53/50 ,  B01D53/68 ,  B01J20090101 ,  B01J8/18

Abstract: The present invention relates to a method for removing gaseous pollutants from exhaust gases, in which the gaseous pollutants react with a fine-grained reactant by forming solids in a fluidized-bed reactor (2), and to a corresponding plant. To achieve low pollutant concentrations in the clean gas with an almost stoichiometric consumption of reactant, it is proposed to introduce the exhaust gas from below through a preferably central gas supply tube ( 20 ) into a mixing chamber ( 21 ) of the reactor ( 2 ), the gas supply tube ( 20 ) being at least partly surrounded by a stationary annular fluidized bed ( 22 ) of reactant, which bed is fluidized by supplying fluidizing gas, and to adjust the the gas velocities of the exhaust gas and of the fluidizing gas for the annular fluidized bed ( 22 ) such that the Particle-Froude-Numbers in the gas supply tube ( 20 ) are between 1 and 100, in the annular fluidized bed ( 22 ) between 0.02 and 2, and in the mixing chamber ( 21 ) between 0.3 and 30.

公开(公告)号：ZA200600898B

公开(公告)日：2007-05-30

申请号：ZA200600898

申请日：2004-07-08

Applicant: OUTOKUMPU OY

Inventor： STUART SNEYD ,  MARTIN HIRSCH ,  DIRK NUBER

IPC: C21B20090101 ,  C21B13/00 ,  C22B1/248 ,  C22B5/14 ,  C22B5/18

Abstract: This invention relates to a process for reducing solids containing iron oxide, such as iron ore, in which fine-grained solids are heated and at least partly calcined in a pre-heating stage ( 2, 9 ). In a first fluidized-bed reactor ( 14 ) downstream of the preheating stage ( 2, 9 ), the solids are prereduced and reduced further in a second fluidized-bed reactor ( 16 ). Downstream of the second reactor ( 16 ) a briquetting stage ( 20 ) is provided, in which the solids are briquetted at a temperature above 500 ° C. To increase the energy efficiency of the process and improve the flowability of the solids in the briquetting stage ( 20 ), magnesite is added to the preheating stage ( 2, 9 ) together with the solids containing iron oxide, which magnesite is at least partly calcined in the preheating stage ( 2, 9 ) to obtain magnesium oxide. Furthermore, the invention relates to a corresponding plant.

公开(公告)号：BRPI0208569B1

公开(公告)日：2019-04-24

申请号：BRPI0208569

申请日：2002-03-09

Applicant: OUTOKUMPU OY

Inventor： LOTHAR FORMANEK ,  MARTIN HIRSCH ,  STUART SNEYD

IPC: B01J8/00 ,  B65G53/52 ,  C21B13/00

Abstract: "processo para o transporte de corpos sólidos granulares". a presente invenção refere-se a um processo de transporte contínuo de corpos sólidos granulares a partir de uma primeira zona com uma pressão de 4,08 a 16,32 kgf/cm^ 2^ (4 a 16 bar) através de uma linha descendente e via uma linha ascendente para uma segunda zona com uma pressão inferior à da primeira zona de 3,06 a 15,3 kgf/cm^ 2^ (3 a 15 bar), por meio de um meio gasoso. a fim de garantir que a pressão entre duas regiões possa ser reduzida a um baixo custo e com pouco esforço de manutenção no transporte contínuo dos corpos sólidos, um meio gasoso (9) é injetado em um tubo através de um bocal direcionado para cima (6) no ponto onde os corpos sólidos granulares são transportados através de uma linha descendente (2) para uma linha ascendente (3).

公开(公告)号：ZA200505917B

公开(公告)日：2006-11-29

申请号：ZA200505917

申请日：2003-12-01

Applicant: OUTOKUMPU OY

Inventor： ANDREAS ORTH ,  MARTIN HIRSCH ,  PETER WEBER ,  STUART SNEYD ,  DIRK NUBER ,  MICHAEL STROEDER

IPC: B01J20090101 ,  B01J8/18 ,  B01J8/30 ,  B01J8/44 ,  C22B20090101 ,  C22B1/10 ,  C22B5/14 ,  F27B20090101 ,  F27B15/02 ,  F27B15/08 ,  F27B15/10