Abrégé

A method for removing sulfur containing dust particles from particulate material exiting a material preheater in which the particulate material is heated by kiln off gases may include a number of steps. Off gases from the kiln are directed through a gas conduit to the preheater to preheat particulate material traveling through the preheater in a direction countercurrent to the direction of off gas flow through the preheater. Material exiting the preheater is directed to a material bypass conduit that is separated from the gas conduit and is flow connected to a material inlet to the kiln. A stripping gas is directed through the conduit to entrain dust particles in the preheated material and to carry said dust particles away from the preheated material.

Classes IPC  ?

• F27B 7/36 - Aménagement des dispositifs d'alimentation en air ou gaz
• F27B 1/00 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale
• C04B 2/12 - Préchauffage, cuisson, calcination ou refroidissement dans des fours à cuve ou dans des fours verticaux

Abrégé

The invention relates to a device for sealing an oven chamber of a coking plant. The invention is characterized in that a sealing frame (14) can be applied to the inlet opening of the oven chamber during charging with a coal cake. Sealing flaps (12, 20) protrude from said sealing frame and can be swiveled inwards by the coal cake (2) on opposite sides (15, 16), the free end edges of the flaps grazing the coal cake (2).

Classes IPC  ?

• C10B 27/04 - Aménagement pour la sortie des gaz de distillation pendant le chargement du four
• C10B 31/10 - Dispositifs de chargement pour fours à coke pour chargement horizontal pour fours à coke à chambres horizontales à charge unique compacte

Abrégé

A centrifuge concentrator bowl has feed deposited onto a base of the bowl and includes a plurality of recesses at axially spaced positions along a peripheral wall of the bowl. The peripheral wall is formed of a rigid metal skeleton frame of rings and upstanding support members on which is molded a urethane liner material to form an integral structure with the rings located at ribs between the recesses. A fluidization water injection system includes an outer container on the bowl, which also acts as a clamping assembly and a plurality of liquid entry openings through the peripheral wall at the base of the recesses allowing flexing of the peripheral wall in response to changes in pressure in the fluidizing liquid. The bowl is formed of separate sections defined by a bottom concave base section and the cast skeleton wall all clamped together to allow replacement of the separate parts.

Classes IPC  ?

• B04B 11/04 - Alimentation ou déchargement cycliqueSystèmes de commande à cet effet

Abrégé

A method for the reduction of mercury emissions from an industrial plant that utilizes a cement or minerals kiln that has a high level of mercury emissions during specific operating conditions. The invention reduces a large spike in mercury emissions typically seen in cement kiln systems when the in-line raw mill is shut-down and all preheater gases are vented to the stack directly. The invention diverts the preheater gases to a cooling device that functions as an adsorption reactor to provide mercury absorption during periods when the raw mill is not in operation.

Classes IPC  ?

• B01D 53/10 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles avec adsorbants dispersés
• C04B 7/36 - Fabrication des ciments hydrauliques en général

Abrégé

Described is a method for removing sulfur containing dust particles from particulate material exiting a material preheater in which the particulate material is heated by kiln off gases. Off gases from the kiln are directed through a gas conduit to the preheater to preheat particulate material traveling through the preheater in a direction countercurrent to the direction of off gas flow through the preheater. Material exiting the preheater is directed to a material bypass conduit that is separated from the gas conduit and is flow connected to a material inlet to the kiln. A stripping gas is directed through the conduit to entrain dust particles in the preheated material and to carry said dust particles away from the preheated material.

Classes IPC  ?

• F27B 15/12 - Aménagement des collecteurs de poussières