The present invention concerns a pig launcher comprising a tubular pig housing holding several pigs in line. A main connector is connectable to a fluid flow line at an end of the tubular pig housing. A kicker valve is provided for each pig and includes a control pressure inlet, a flow inlet and a flow outlet. A kicker valve control pipe is connected each of the kicker valves and to a kicker system connector. A kicker header is connected to the flow inlet of each of the kicker valves. A kicker branch pipe is connected between each of the kicker valves and the kicker branch pipe inlet for each of the number of pigs.

There is provided an apparatus for controlling a run of a pig (20) through a tubular object (22), the apparatus comprising: a propulsion device (32) for propelling the pig (20) inside the tubular object (22); a recording device (30) configured to, in real-time, record operating steps and operating parameters of a human-controlled reference run of the pig (20) through the tubular object (22); and a controller (30) programmed to selectively carry out an automatic control mode in which the controller (30) automatically controls a subsequent run of the pig (20) through the tubular object (22) in accordance with the recorded operating steps and operating parameters of the reference run, wherein the automatic control mode includes control of the propulsion device (32) to propel the pig (20) through the tubular object (22).

There is provided an apparatus for controlling a run of a pig (20) through a tubular object (22), the apparatus comprising: a propulsion device (32) for propelling the pig (20) inside the tubular object (22); a recording device (30) configured to, in real-time, record operating steps and operating parameters of a human-controlled reference run of the pig (20) through the tubular object (22); and a controller (30) programmed to selectively carry out an automatic control mode in which the controller (30) automatically controls a subsequent run of the pig (20) through the tubular object (22) in accordance with the recorded operating steps and operating parameters of the reference run, wherein the automatic control mode includes control of the propulsion device (32) to propel the pig (20) through the tubular object (22).

A method for cleaning a coke deposit from an internal surface of a process equipment, comprising removing at least a portion of the coke deposit from the internal surface using a flexible pig comprising a plurality of bristles, without damaging a metal protective layer of the internal surface of the process equipment. A flexible pig for cleaning a coke deposit from an internal surface of a process equipment without damaging a metal protective layer of the internal surface, comprising a flexible body formed of a polymeric material, and a plurality of bristles partially encapsulated by the polymeric material of the flexible body.

A method for cleaning a coke deposit from an internal surface of a process equipment, comprising removing at least a portion of the coke deposit from the internal surface using a flexible pig comprising a plurality of bristles, without damaging a metal protective layer of the internal surface of the process equipment. A flexible pig for cleaning a coke deposit from an internal surface of a process equipment without damaging a metal protective layer of the internal surface, comprising a flexible body formed of a polymeric material, and a plurality of bristles partially encapsulated by the polymeric material of the flexible body.

Methods and systems are provided for treating the tail gas stream of a sulfur recovery plant. The methods including generating a tail gas stream from a sulfur recovery plant, treating the tail gas stream with a hydrogen sulfide absorption unit and a hydrogen selective membrane unit, generating a stream low in hydrogen sulfide and a stream rich in hydrogen. The hydrogen sulfide rich stream is recycled to the sulfur recovery unit. The hydrogen selective membrane unit includes a glassy polymer membrane selective for hydrogen over hydrogen sulfide and carbon dioxide.

Methods and systems are provided for treating the tail gas stream of a sulfur recovery plant. The methods including generating a tail gas stream from a sulfur recovery plant, treating the tail gas stream with a hydrogen sulfide absorption unit and a hydrogen selective membrane unit, generating a stream low in hydrogen sulfide and a stream rich in hydrogen. The hydrogen sulfide rich stream is recycled to the sulfur recovery unit. The hydrogen selective membrane unit includes a glassy polymer membrane selective for hydrogen over hydrogen sulfide and carbon dioxide.

A self-powered pipeline pig includes a housing defining a trailing end, a leading end and a longitudinal axis. The plurality of internal flow channels extend longitudinally through the housing between the trailing end and the leading end. A power generation device is disposed in a first one of the plurality of internal flow channels. The power generation device generates electric power from a pipeline fluid flowing through the first flow channel during a pigging operation. A battery is disposed on the self-powered pipeline pig to provide electric power during the pigging operation to operate one or more components installed on the self-powered pipeline pig. The power generation device is electrically coupled to the battery to recharge the battery using the generated electric power.

A pig pumping unit is provided that allows eight passes to be made simultaneously with a single pumping unit. A single engine is used to drive three or four pumps, each connected into separate pumping units. Two engines may thus be used to drive up to eight pumps in a single trailer.

A pig launch and recovery apparatus independently mountable to and removable from a water supply system including at least one water main and valve. The pig launch and recovery apparatus comprises a flow tube and a launch and recovery tube. The flow tube includes first and second flow ends and a main flow valve located between the first and second flow ends. The first flow end is removably mounted to a recirculating unit including a pump. The second flow end is removably mounted to a first point in the system. A launch and recovery tube further includes first and second launch ends, wherein the first launch end is fluidly connected to the flow tube between the first flow end and the main flow valve, and wherein the second launch end is fluidly connected to the flow tube between the main flow valve and the second flow end.