Abstract: Disclosed are processes for converting an alkyne to an olefin comprising feeding a molecular-oxygen-containing gas stream into a converting zone of an alkyne converter along with an alkyn-containing feed mixture comprising hydrocarbons and molecular hydrogen to contact the converting catalyst. The converting catalyst can be regenerated online as a result.

Abstract: The present invention involves a gas furnace having a condensate trap formed in the transition box between the secondary heat exchanger and the exhaust blower. The gas furnace includes gas burners which burn fuel within the passageways of the heat exchanger are induced through its internal passageways by an exhaust blower. The transition box connects the heat exchangers with the exhaust blower and provides a location for condensate to collect for discharge through the integral condensate trap assembly. Also, the exhaust blower housing has drainage ports to convey condensate from the blower and vent back to the condensate trap.

Abstract: A burner control for a condensing furnace having a flame proving circuit that incorporates the flame at the burner to be closed and that opens upon absence of a flame to cause a gas valve to close and block the flow of gas to the burner. A short circuit shunting the flame proving circuit includes a probe that projects into the outlet manifold of the condensing furnace. If liquid level in the outlet manifold reaches the probe, a short circuit is closed between the probe and a ground on the manifold. The control to the valve is energized to close the valve in the same manner as if the flame had extinguished at the burner. Upon closing the gas valve, the burner is extinguished.

Abstract: A condensate drain system for a furnace incorporates a collector and blower housing assembly mounted above a secondary condensing heat exchanger with condensate ports between the blower housing and the collector housing positioned to assure flow of all condensate from the exhaust flue and the blower housing to the collector housing. A pipe extends downwardly from the collector housing to the condenser outlet manifold so that all condensate ultimately flows to the condenser outlet manifold and can be discharged to a drain by a single tube.

Abstract: A combustion air blower assembly for a furnace includes a casing, a blower in said casing and a motor for driving said blower secured to said casing. This invention provides unique mounting means for securing the motor in close proximity to the casing, while allowing motor flexure in a direction radial to the axis of the motor to dissipate torsional vibration energy and maintaining the structural integrity of the motor in the axis thereof. The mounting means comprise a plurality of generally J-shaped isolation springs having a loop at each end. One loop of each isolation spring is secured to the casing and the other loop is secured to a bracket on the motor. Each isolation spring is generally flat and extends generally perpendicular from the wall of the casing to which the motor is secured.