Reactor for preparing syngas

A reactor vessel for preparing a syngas comprising a tubular syngas collection chamber, a quench chamber and a dipleg connecting the syngas collection chamber with the quench chamber,

• wherein the syngas collection chamber is connected to the dipleg via a slag tap, comprising of a frusto-conical part starting from the lower end of a tubular wall of the syngas collection chamber and converging to an opening fluidly connected to the interior of the dipleg,
• wherein the diameter of said opening is smaller than the diameter of the dipleg, and
• wherein the frusto-conical part comprises one or more conduits having in inlet for cooling medium and an outlet for used cooling medium,
• wherein the slag tap also comprises a first tubular part connected to the opening of the frusto-conical part and extending in the direction of the dipleg,
• wherein a second tubular part is connected to the frusto-conical part or to the tubular part and extending in the direction of the dipleg and having a diameter smaller than the diameter of the dipleg and larger than the diameter of the opening of the frusto-conical part and wherein the second tubular part is spaced away from the dipleg to provide an annular space and wherein in said annular space a discharge conduit for liquid water is present having a liquid water discharge opening located such to direct the liquid water along the inner wall of the dipleg, and
• wherein at least half of the vertical length of the first tubular part extends below the liquid water discharge opening.