Abstract: A feed injector for a gasifier comprising a burner and a cooling jacket to protect the burner from high temperatures. The cooling jacket comprises two concentric channels in order to provide a flow path for a heat transfer fluid, typically water, to travel through one channel toward the burner front, travel along the burner front, and return through the other channel. Heat transfer in the cooling jacket is improved by introducing one or more fins in the path of the heat transfer fluid and/or by increasing the radius of curvature of the wall corner bordering the flow recirculation zone in the cooling jacket.

Abstract: A syngas cooler is configured to cool a syngas. The syngas cooler includes a superheater heat exchanger, which further includes a first header configured to receive saturated steam, a second header configured to discharge superheated steam, and a first group of tubes directly coupled to and vertically extending between the first and second headers. Each tube of the first group of tubes includes an outer surface that interfaces with the syngas and a respective length between the first and second headers, and each tube of the first group of tubes does not contact another tube along the respective length to enable a flow of the syngas around each tube's outer surface along its respective length and between each tube.

Abstract: A syngas cooler is configured to cool a syngas. The syngas cooler includes a superheater heat exchanger, which further includes a first header configured to receive saturated steam, a second header configured to discharge superheated steam, and a first group of tubes directly coupled to and vertically extending between the first and second headers. Each tube of the first group of tubes includes an outer surface that interfaces with the syngas and a respective length between the first and second headers, and each tube of the first group of tubes does not contact another tube along the respective length to enable a flow of the syngas around each tube's outer surface along its respective length and between each tube.

Abstract: A quench system includes a housing having a longitudinal axis, a gas path for a gas within the housing, a steam input and output, and a dip tube within the housing. The dip tube includes tubing arranged to form a wall. A steam path, separate from the gas path, is disposed within the tubing in a thickness of the wall. The dip tube is configured to allow passage of the gas along the gas path. The steam input is fluidically connected to the steam output by the tubing. The quench system is configured to cool the gas along the gas path and heat steam along the steam path within the tubing of the dip tube.

Abstract: The present application provides a gasifier for creating a flow of a syngas. The gasifier may include a reaction chamber and a quench chamber. The quench chamber may include a number of integrated scrubber trays therein such that the syngas first enters a quench pool via a dip tube and then passes through the scrubber trays before leaving the quench chamber.

Abstract: A system includes a syngas cooler and a compatible seal gas system. The syngas cooler may be configured to cool a syngas. The compatible seal gas system may be configured to supply a compatible seal gas to a seal of the syngas cooler. The seal may be configured to block the syngas from a passage between an outer wall of the syngas cooler and a tube cage of the syngas cooler.

Abstract: A quench system includes a housing having a longitudinal axis, a gas path for a gas within the housing, a steam input and output, and a dip tube within the housing. The dip tube includes tubing arranged to form a wall. A steam path, separate from the gas path, is disposed within the tubing in a thickness of the wall. The dip tube is configured to allow passage of the gas along the gas path. The steam input is fluidically connected to the steam output by the tubing. The quench system is configured to cool the gas along the gas path and heat steam along the steam path within the tubing of the dip tube.

Abstract: A modular heat exchanger assembly for a steam generator includes a first fluid inlet conduit configured and disposed to be connected to a source of a first fluid, and a tube sheet coupled to the first fluid inlet conduit. The tube sheet includes a first surface and an opposing, second surface. A plurality of platen tubes extends from the second surface of the tube sheet. The plurality of platen tubes is configured and disposed to carry a second fluid in a heat exchange relationship with the first fluid in a heat exchange vessel. The modular heat exchanger assembly is configured and disposed to be selectively and readily removable from the heat exchange vessel.

Abstract: A radiant syngas cooler is provided and includes a vessel shell defining an interior region for cooling of syngas. The cooler also includes a tube cage comprising a plurality of tubes, each having a first end and a second end. The cooler further includes a plurality of platen tubes located radially inwardly from the tube cage. The cooler yet further includes a pipe fluidly coupling the second end of the plurality of tubes with an inlet of the plurality of platen tubes. The cooler also includes an outlet pipe fluidly coupling an outlet of the plurality of platen tubes with a steam usage structure. The cooler further includes an inlet pipe fluidly coupling the steam usage structure to the first end of the plurality of tubes of the tube cage.

Abstract: A system includes a gasifier that may gasify a feedstock to produce a syngas and a syngas cooler that includes a cooling chamber having a tapered configuration. The cooling chamber includes a first section that may separate particulates from the syngas and includes a first opening and a second opening. The first opening has a smaller width than the second opening. The system also includes a second section in fluid communication with the first section that includes a plurality of tubes surrounding the first section. A first portion of the plurality of tubes is arranged parallel to a longitudinal axis of the cooling chamber and a second portion of the plurality of tubes is angled such that the second portion of the plurality of tubes forms the tapered configuration. The system further includes a passage to flow a seal gas between a shell of the radiant syngas cooler and the second section. The shell encloses the cooling chamber.

Abstract: The present application provides a gasifier for creating a flow of a syngas. The gasifier may include a reaction chamber and a quench chamber. The quench chamber may include a number of integrated scrubber trays therein such that the syngas first enters a quench pool via a dip tube and then passes through the scrubber trays before leaving the quench chamber.

Abstract: A system includes a gasifier. The gasifier includes a reaction chamber configured to convert a feedstock into a synthetic gas, a quench chamber configured to cool the synthetic gas, and a transition section between the reaction chamber and the quench chamber. The gasifier also includes a quench ring configured to provide a first flow of a coolant to the quench chamber and a shielding gas system configured to provide a second flow of a shielding gas to protect at least one of the quench ring or the transition section.

Abstract: A system includes a gasifier that may gasify a feedstock to produce a syngas and a syngas cooler that includes a cooling chamber having a tapered configuration. The cooling chamber includes a first section that may separate particulates from the syngas and includes a first opening and a second opening. The first opening has a smaller width than the second opening. The system also includes a second section in fluid communication with the first section that includes a plurality of tubes surrounding the first section. A first portion of the plurality of tubes is arranged parallel to a longitudinal axis of the cooling chamber and a second portion of the plurality of tubes is angled such that the second portion of the plurality of tubes forms the tapered configuration. The system further includes a passage to flow a seal gas between a shell of the radiant syngas cooler and the second section. The shell encloses the cooling chamber.

Abstract: A system includes a syngas cooler and a compatible seal gas system. The syngas cooler may be configured to cool a syngas. The compatible seal gas system may be configured to supply a compatible seal gas to a seal of the syngas cooler. The seal may be configured to block the syngas from a passage between an outer wall of the syngas cooler and a tube cage of the syngas cooler.

Abstract: A system includes a gasifier. The gasifier includes a reaction chamber configured to convert a feedstock into a synthetic gas, a quench chamber configured to cool the synthetic gas, and a transition section between the reaction chamber and the quench chamber. The gasifier also includes a quench ring configured to provide a first flow of a coolant to the quench chamber and a shielding gas system configured to provide a second flow of a shielding gas to protect at least one of the quench ring or the transition section.