Tubular pressurized catalytic hydrocarbon converter

A converter comprising a cylindrical vessel and inside of said vessel comprising:

• rising columns for the discharge of gases,
• reaction tubes grouped around the rising columns and disposed coaxially in sheaths, the lower part of the reaction tubes of one group being connected to the lower end of the corresponding rising column by "pig tails",
• means for feeding the reaction tubes with gas, means for the discharge of the gases from the rising columns and means for passing a heat-carrying fluid between the tubes and the sheaths,
• wherein the connection between the pig tails and the corresponding rising columns is effected on plates disposed at the lower ends of the rising columns for the discharge of the gases and provided with removable covers, and
• said converter further comprising at least three sheaths and a transverse partition freely attached to the lower ends of at least three of the sheaths, said partition having orifices for the free passage of the reaction tubes and of the rising columns.