Shut-off valve, coking drum and method

A shut-off valve of a coking drum comprising:

• a pipe socket having a first end for connection to the coking drum and a second end on which a slider is configured and arranged for opening and closing the coking drum;
• a supply connection included in the pipe socket for filling the coking drum with a medium;
• and
• a diaphragm included in the pipe socket configured and arranged between the supply connection and the first end of the pipe socket, wherein the diaphragm is movable into a filling position and into an emptying position,
• wherein, in the filling position, a diaphragm opening is arranged in a region of a central longitudinal axis of the pipe socket for introducing the medium centrally into the coking drum,
• wherein, in the emptying position, the diaphragm opening has a larger passage area than in the filling position, and
• wherein a volume flow of the medium when filling the coking drum is controllable by changing the diaphragm opening.

A method for producing coke in a coking drum connected to a shut-off valve, the method comprising:

• providing a pipe socket having a first end for connection to the coking drum and a second end on which a slider is configured and arranged for opening and closing the coking drum;
• providing a supply connection included in the pipe socket for filling the coking drum with a medium;
• providing a diaphragm included in the pipe socket configured and arranged between the supply connection and the first end of the pipe socket, wherein the diaphragm is movable into a filling position and into an emptying position,
• wherein, in the filling position, a diaphragm opening is arranged in a region of a central longitudinal axis of the pipe socket for introducing the medium centrally into the coking drum;
• wherein, in the emptying position, the diaphragm opening has a larger passage area than in the filling position;
• filing the coking drum with the medium;
• and
• moving the diaphragm into the filling position, wherein the medium is fed though the supply connection into the pipe socket and through the diaphragm into the coking drum centrally with respect to the coking drum.