Car dumper dust collection method and apparatus
AssigneeAir-Cure Incorporated
InventorsDennis Hall, Michael Harris, Kal Ugargol
Life of this patent
Estimating the term…
Abstract
A method and apparatus for controlling dust generated by the rotary dumping of rail cars may include one or more flexible baffles provided to the back-side of a rotary dump frame to seal a portion of the material receiving pit during a portion of the rotary motion. The dust cloud generated by this dumping is retained in the pit for an increased time due to tumbling of the cloud induced by the baffles and other features of the facility. A plurality of intake ducts removes the dust cloud from the pit for transfer to a remote filtering facility.
Claims24
A method of controlling dust produced as part of a rail car material dumping operation in a rail car dumping facility, the rail car dumping facility comprising a rotatable frame wherein material contained within a rail car is dumped into a pit, the pit having a dump side toward which contained material is dumped and an opposing back side, a back side diverter being located within the pit on the back side, the method comprising the steps of:
- positioning the rail car on the rotatable frame within the rotary dumping facility;
- rotating the rotatable frame and car through a predetermined rotational motion above the pit from an upright position where the contained material is within the car to a dumping position wherein the contained material exits the car, thereby emptying the car of the contained material;
- substantially sealing the rotatable frame to the back side diverter with a plurality of baffles to inhibit dust from escaping from the pit between the rotatable frame and the back side diverter;
- controlling air inflow into the pit on the dump side of the pit thereby inducing tumbling of a cloud of particulate matter and air formed within the pit from the dumping operation;
- exhausting the particulate matter and air through a plurality of air intakes located within the pit;
- and
- in a rings out dumping facility positioning an end ring baffle that extends from a grizzly upwardly to approximately the perimeter of a supporting ring and from the backside diverter toward the dumpside of the pit whereby dust laden air is substantially prevented from escaping from the pit under the end ring baffle.
A method of controlling dust produced as part of a rail car material dumping operation in a rail car dumping facility, the rail car dumping facility comprising a rotatable frame wherein material contained within a rail car is dumped into a pit, the pit having a dump side toward which contained material is dumped and an opposing back side, a back side diverter being located within the pit on the back side, the method comprising:
- positioning the rail car on the rotatable frame within the rotary dumping facility;
- rotating the rotatable frame and car through a predetermined rotational motion above the pit from an upright position where the contained material is within the car to a dumping position wherein the contained material exits the car, thereby emptying the car of the contained material;
- substantially sealing the rotatable frame to the back side diverter with a plurality of baffles to inhibit dust from escaping from the pit between the rotatable frame and the back side diverter;
- controlling air inflow into the pit on the dump side of the pit thereby inducing tumbling of a cloud of particulate matter and air formed within the pit from the dumping operation;
- exhausting the particulate matter and air through a plurality of air intakes located within the pit;
- and
- in a rings in dumping facility, positioning an end of hood close off panel extending substantially from a wall supporting the rotatable frame to the back side diverter.
A method of increasing dwell time of a dust cloud in a rail car dumping facility material receiving pit, the material receiving pit having a dump side toward which material is dumped and an opposing back side, the method comprising:
- disposing an airflow diverter on the back side of the material receiving pit;
- disposing a plurality of baffles on a rotary dumping frame;
- rotating the rotary dumping frame through a predetermined motion from an upright position where contained material is within a rail car to a dumping position where the contained material exits the rail car;
- substantially sealing the rotary dumping frame to the back side of the pit by bringing the baffles into contact with the airflow diverter during at least a portion of the step of rotating the dumping frame;
- diverting airflow on a dump side of the pit via a dump side diverter;
- inducing the dust cloud to tumble within the pit;
- and
- in a rings out dumping facility positioning an end ring baffle that extends from a grizzly upwardly to approximately the perimeter of a supporting ring and from the backside diverter toward the dumpside of the pit whereby dust laden air is substantially prevented from escaping from the pit under the end ring baffle.
A method of increasing dwell time of a dust cloud in a rail car dumping facility material receiving pit, the material receiving pit having a dump side toward which material is dumped and an opposing back side, the method comprising:
- disposing an airflow diverter on the back side of the material receiving pit;
- disposing a plurality of flexible baffles on a rotary dumping frame;
- rotating the rotary dumping frame through a predetermined motion from an upright position where contained material is within a rail car to a dumping position where the contained material exits the rail car;
- substantially sealing the rotary dumping frame to the back side of the pit by bringing the baffles into contact with the airflow diverter during at least a portion of the step of rotating the dumping frame;
- diverting airflow on a dump side of the pit via a dump side diverter;
- inducing the dust cloud to tumble within the pit;
- and
- in a rings in dumping facility, positioning an end of hood close off panel extending substantially from a wall supporting the rotary dumping frame to the back side diverter.
An apparatus for rotary dumping of rail cars within a rail car dumping facility, comprising:
- means for material receiving disposed within a dumping facility, the means for material receiving having a dump side toward which materials are dumped and an opposing a back side,
- means for supporting a rail car within the dumping facility;
- means for rotating the car through a predetermined rotational motion above the means for material receiving thereby emptying the car of contained material;
- back side means for diverting the contained material located in the back side of the means for receiving;
- means for substantially sealing the means for rotating to the back side means for diverting to inhibit dust from escaping between the means for rotating and the back side means for diverting;
- means for inducing tumbling of a cloud of dust formed from the dumping operation;
- means for removing the dust cloud;
- and
- in a rings out dumping facility, an end ring baffle that extends from a grizzly upwardly to approximately the perimeter of a supporting ring and from the back side means for diverting toward the dumpside of the pit whereby dust laden air is substantially prevented from escaping from the pit under the end ring baffle.
An apparatus for rotary dumping of rail cars within a rail car dumping facility, comprising:
- means for material receiving disposed within a dumping facility, the means for material receiving having a dump side toward which materials are dumped and an opposing a back side,
- means for supporting a rail car within the dumping facility;
- means for rotating the car through a predetermined rotational motion above the means for material receiving thereby emptying the car of contained material;
- back side means for diverting the contained material located in the back side of the means for receiving;
- means for substantially sealing the means for rotating to the back side means for diverting to inhibit dust from escaping between the means for rotating and the back side means for diverting;
- means for inducing tumbling of a cloud of dust formed from the dumping operation;
- means for removing the dust cloud;
- and
- in a rings in dumping facility, an end of hood close off panel extending substantially from a wall supporting the means for rotating to the back side means for diverting.
Dependencies are inferred from the claim text.