| 摘要 |
A method of removing residual asphalt from an asphalt transport tank car after substantially unloading the transported asphalt, including the steps of (1) chilling the interior of the tank car to make the residual asphalt brittle, and (2) chipping the brittle residual asphalt from the interior of the tank car. The tank car may be chilled by pumping cooled air into the tank and/or circulating cool liquid through the tank car coils. The tank may be chilled to about 40° F. or below. Chipping may be accomplished by pneumatic chisels or chippers.
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