Gasification reactor with superheater and superheated steam line

A gasification reactor comprising:

• a reactor chamber;
• a cooling channel connected to a syngas outlet of the reactor chamber, the cooling channel comprising a series of steam generating heat exchange units, at least one of the heat exchange units being a superheater;
• at least one steam drum;
• recirculation lines for circulating water and steam between one or more of the heat exchange units and the steam drum,
• a superheated steam header,
• a steam feed line configured to transport steam from the steam drum to the superheater,
• a superheated steam line configured to transport superheated steam from the superheater to the superheated steam header,
• the superheated steam line being split into a return line leading to a heat exchange line through the steam drum, and a header feed line leading to the superheated steam header,
• a first valve configured to selectively open or close the return line,
• a second valve configured to selectively open or close the header feed line, and
• a secondary superheated steam feed line connected to an outlet of the heat exchange line through the steam drum and leading to the superheated steam header, the secondary superheated steam feed line being connected to the header feed line between the second valve and the superheated steam header.