Abstract: A catalytic incinerator system for oxidation/combustion of volatile organic compounds (VOC's). The system is relatively compact, is designed to accommodate the thermal stresses within the system without adversely affecting the system components, and to provide substantially uniform temperature distribution in the VOC's and combustion air. The system includes a dual shell housing having an inner shell and an outer shell, wherein the inner shell is capable of thermal expansion and movement relative to the outer shell. Also included is a multi-pass tube-type heat exchanger suspended or otherwise mounted within a heat exchange chamber. The heat exchanger is mounted within the heat exchange chamber so that one end is unfixed and thus the heat exchanger can freely expand and contract due to temperature fluctuations within the heat exchange chamber.

Abstract: An apparatus for forming circular weld joints includes a support frame, a motor having a primary drive shaft, a secondary drive shaft coupled to the primary drive shaft, and a hub mounting plate affixed to the support frame. A floating hub assembly is included and a chuck which is coupled to the secondary drive shaft and has at least one radially offset receiving bore. A MIG-type welding tip is rotated in a circular path upon activation of the motor to form a circular weld. Stabilizing guide members and depth guides are provided which extend outwardly from a support frame to ensure proper positioning of the welding tip during the weld forming operation.

Abstract: A catalytic incinerator system for oxidation/combustion of volatile organic compounds (VOCs). The system is relatively compact, is designed to accommodate the thermal stresses within the system without adversely affecting the system components, and to provide substantially uniform temperature distribution in the VOCs and combustion air. The system includes a dual shell housing having an inner shell and an outer shell, wherein the inner shell is capable of thermal expansion and movement relative to the outer shell. Also included is a multi-pass tube-type heat exchanger suspended or otherwise mounted within a heat exchange chamber. The heat exchanger is mounted within the heat exchange chamber so that one end is unfixed and thus the heat exchanger can freely expand and contract due to temperature fluctuations within the heat exchange chamber.