A co-current contacting system, comprising: a co-current contactor located in-line within a pipe, the co-current contactor comprising: an annular support ring configured to maintain the co-current contactor within the pipe; a plurality of radial blades extending from the annular support ring, the annular support ring having a plurality of liquid channels configured to allow a liquid stream to flow through the plurality of radial blades and out of injection orifices (711, 808) disposed on the radial blades; and a central gas entry cone supported by the plurality of radial blades and configured to allow a first portion of a gas stream to flow through a hollow section of the central gas entry cone and through gas exit slots included in the plurality of radial blades, and a second portion of the gas stream to flow around the central gas entry cone between the plurality of radial blades, to thereby shear the liquid stream flowing out of the injection orifices into liquid droplets and entrain the liquid droplets in the first and second portions of the gas stream; and a separation system configured to remove at least a portion of the liquid droplets from the gas stream. a co-current contactor located in-line within a pipe, the co-current contactor comprising: an annular support ring configured to maintain the co-current contactor within the pipe; a plurality of radial blades extending from the annular support ring, the annular support ring having a plurality of liquid channels configured to allow a liquid stream to flow through the plurality of radial blades and out of injection orifices (711, 808) disposed on the radial blades; and a central gas entry cone supported by the plurality of radial blades and configured to allow a first portion of a gas stream to flow through a hollow section of the central gas entry cone and through gas exit slots included in the plurality of radial blades, and a second portion of the gas stream to flow around the central gas entry cone between the plurality of radial blades, to thereby shear the liquid stream flowing out of the injection orifices into liquid droplets and entrain the liquid droplets in the first and second portions of the gas stream; and an annular support ring configured to maintain the co-current contactor within the pipe; a plurality of radial blades extending from the annular support ring, the annular support ring having a plurality of liquid channels configured to allow a liquid stream to flow through the plurality of radial blades and out of injection orifices (711, 808) disposed on the radial blades; and a central gas entry cone supported by the plurality of radial blades and configured to allow a first portion of a gas stream to flow through a hollow section of the central gas entry cone and through gas exit slots included in the plurality of radial blades, and a second portion of the gas stream to flow around the central gas entry cone between the plurality of radial blades, to thereby shear the liquid stream flowing out of the injection orifices into liquid droplets and entrain the liquid droplets in the first and second portions of the gas stream; and a separation system configured to remove at least a portion of the liquid droplets from the gas stream.