Abstract:
An apparatus and method for consistently delivering solid fuel to the combustion zone of a furnace is disclosed. The method includes feeding the solid fuel into the material inlet of a rotating rotary air lock valve which may have slanted vanes and moving the fuel from the material inlet of the rotating rotary air lock valve to the material outlet of the rotating rotary air lock valve, and conveying the fuel and gas through a discharge conduit to a fuel feed receiver of a furnace burner having a combustion zone.
Abstract:
A method and apparatus for delivering biomass fuel to a structure through an external wall of the structure is disclosed. The apparatus comprises a hopper disposed within a delivery vehicle. The hopper includes an inlet disposed on its top surface to receive biomass fuel and an outlet located proximate the bottom of the hopper to release the fuel by opening a gate valve. A delivery hose is connected to the hopper outlet at one end and is sealably connectable at its other end to an externally accessible coupling disposed on an external wall of the structure to which fuel is to be delivered. The coupling is connected on the interior side of the external wall to a delivery pipe that connects to a fuel bin for storing the biomass fuel. Sensors within the bin can signal the operator when the level of fuel within the bin reaches a preselected level, allowing the operator to stop delivery when the bin is full.
Abstract:
A flow homogeniser for insertion in a pipeline conveying a particulate material carried by a carrier fluid comprising a pipe having an inlet end and an outlet end and including a core defined by one or more core pipe sections connected in series between the inlet end and the outlet end, the or each core pipe section defining a relatively gradual or rapid change in cross-sectional area in order to mix particulate material and carrier fluid entering the inlet end to form a homogeneous mixture on exit from the outlet end.
Abstract:
A method for retrofitting a solid fuel pulverizer and exhauster system includes replacing the bowl drive motor 38 with a new drive motor which is operable to drivingly rotate the bowl 12 at the pre-retrofit speed but which provides relatively more horsepower than the replaced bowl drive motor 38 and replacing the original exhauster fan coupling with a new exhauster fan gear set 46, 48 which effects rotation of the exhauster fan 30 at a relatively higher rotational speed than the pre-retrofit speed. A solid fuel pulverizer and exhauster system of the present invention acting in cooperative association with a fuel-fired steam generating power plant includes an exhauster fan transmission assembly 50, 52 operable to translate the rotation of the drive shaft 54 of the exhauster fan drive motor 44 through ninety (90) degrees to thereby effect rotation of the fan by the exhauster fan drive motor 44.
Abstract:
A particulate distributor for pulverized coal flowing to a combustion chamber has an inner cylinder, an outer cylinder concentric with the inner cylinder, an intermediate cylinder concentric with the inner cylinder, a first flow channel defined between the inner cylinder and the intermediate cylinder, the first flow channel having a first cross-sectional flow area, a second flow channel defined between the intermediate cylinder and the outer cylinder, the second flow channel having a second cross-sectional flow area, and an outlet diffuser attached to an outlet side of the particulate distributor, the outlet diffuser having a surface area extending perpendicular to the first flow channel and the second flow channel. The outlet diffuser is configured to reduce the first cross-sectional flow area and the second cross-sectional flow area at the outlet side.
Abstract:
A conical cylindrical distributor for particulate coal being fed from a mill/pulverizer to a combustion chamber has concentric, vaned flow channels terminating in dentillated plated extending partially across the flow paths directly at the outlet ends thereof to create turbulence and particle impact to better supply the combustion chamber with a uniform mixture of coal particles.
Abstract:
A system for fluidizing and conveying a powdery product is provided. The system includes plurality of powder-locking and metering vessels, the vessels each having a conveying line for the powdery product and a control mechanism for the mass flow of the powdery product. The conveying lines are brought together to form a common conveying line and are supplied to a remover of the powdery product. The powder-locking and metering vessels are alternatively fed with the powdery product and tensioned with the fluidizing gas under operating pressure. The control mechanisms of the powder-locking and metering vessels are activated in such a manner that the mass flow sum of powdery product in the conveying lines is identical to the desired value for the mass flow of powdery product to the remover of the powdery product.
Abstract:
A solid particle distribution controller includes a plurality of division plates proximate a division between an upstream solid particle conveyance pipe and a plurality of downstream pipes. The solid particle distribution controller also includes a plurality of extension plates. Each of the extension plates is movably mounted proximate to a respective division plate for movement in an upstream and downstream direction with respect to the division plate. The plurality of extension plates are configured and adapted for motion in the upstream and downstream direction independent of one another to extend upstream of the division plates as needed to improve solid particle distribution among the downstream pipes.
Abstract:
A solid particle distribution controller includes a plurality of division plates proximate a division between an upstream solid particle conveyance pipe and a plurality of downstream pipes. The solid particle distribution controller also includes a plurality of extension plates. Each of the extension plates is movably mounted proximate to a respective division plate for movement in an upstream and downstream direction with respect to the division plate. The plurality of extension plates are configured and adapted for motion in the upstream and downstream direction independent of one another to extend upstream of the division plates as needed to improve solid particle distribution among the downstream pipes.
Abstract:
Provided is a combustion burner including: a fuel nozzle (51) that is able to blow a fuel gas obtained by mixing pulverized coal with primary air; a secondary air nozzle (52) that is able to blow secondary air from the outside of the fuel nozzle (51); a flame stabilizer (54) that is provided at a front end portion of the fuel nozzle (51) so as to be near the axis center; and a rectification member (55) that is provided between the inner wall surface of the fuel nozzle (51) and the flame stabilizer (54), wherein an appropriate flow of a fuel gas obtained by mixing solid fuel with air may be realized.