Abstract: A feedstream combustion device for combusting a fuel feedstream having one or more burners, where each burner comprises a mixer having a first mixer segment and a second mixer segment that mixes a first air intake of a first air feedstream and a fuel feedstream at a first mixer segment inlet end and mixes a second air intake of a second air feedstream with the first air feedstream and fuel feedstream in an annular space between the external surface of the first mixer segment and the internal surface of the second mixer segment.

Abstract: A feedstream combustion device for combusting a fuel feedstream having one or more burners, where each burner comprises a mixer having a first mixer segment and a second mixer segment that mixes a first air intake of a first air feedstream and a fuel feedstream at a first mixer segment inlet end and mixes a second air intake of a second air feedstream with the first air feedstream and fuel feedstream in an annular space between the external surface of the first mixer segment and the internal surface of the second mixer segment.

Abstract: A securing apparatus for a prosthetic leg including a belt strap, a pair of hook and loop fasteners disposed on the belt strap, and a pair of top attachment loops attached to the belt strap. A sled-shaped support attachment includes a flattened base portion, a pair of support extensions, and a pair of bottom attachment loops. Each of a right ratchet strap and a left ratchet strap of a pair of ratchet straps has an upper spring-loaded clip and a lower spring-loaded clip. The upper spring-loaded clip of each of the right ratchet strap and the left ratchet strap is attachable to the right top attachment loop and the left top attachment loop, respectively. The lower spring-loaded clip of each of the right ratchet strap and the left ratchet strap is attachable to a right bottom attachment loop and a left bottom attachment loop, respectively, of the support attachment.

Abstract: The invention provides devices and methods for collecting vapor gas generated by an oil-containing material within a production tank. The devices and associated methods result in produced oil having a reduced level of dissolved hydrocarbons and recovery of vapor gas for resale. The devices include vapor recovery units connected to conventional oil-production units so that a conventional unit is converted to a low emission unit. In an embodiment, the device is a column separator comprising a perforated, packed spiral baffle with one end that receives vapor gas and a second end for removing gas that has traversed the length of the column separator. Also provided are methods for converting an oil-production unit into a low-emission oil production unit using any of the devices disclosed herein.

Abstract: The invention provides devices and methods for collecting vapor gas generated by an oil-containing material within a production tank. The devices and associated methods result in produced oil having a reduced level of dissolved hydrocarbons and recovery of vapor gas for resale. The devices include vapor recovery units connected to conventional oil-production units so that a conventional unit is converted to a low emission unit. In an embodiment, the device is a column separator comprising a perforated, packed spiral baffle with one end that receives vapor gas and a second end for removing gas that has traversed the length of the column separator. Also provided are methods for converting an oil-production unit into a low-emission oil production unit using any of the devices disclosed herein.