Shell Oil Comapny

David W Westerman

Andrew M Scott

Franciscus J Schrauwen

Multitube reactor for carrying out a process for catalytic conversion, comprising a normally substantially vertically extending vessel, a plurality of open-ended reactor tubes (2) arranged in the vessel parallel to its central longitudinal axis of which the upper ends are fixed to an upper tube plate (5) and in fluid communication with a fluid inlet chamber (8) above the upper tube plate (5) and of which the lower ends are fixed to a lower tube plate and in fluid communication with an effluent collecting chamber below the lower tube plate, an inlet (13) for supplying liquid to the fluid inlet chamber (8), inlet for supplying gas to the fluid inlet chamber (8), and an effluent outlet arranged in the effluent collecting chamber, wherein the upper end part of each reactor tube is provided with a cap (25) having a gas inlet opening (27), which defines a liquid inlet (28) and an outlet (30) in fluid communication with the upper end part of the reactor tube (2), and a liquid riser (33) extending between a level in the layer (40) of liquid which is during normal operation present in the fluid inlet chamber (8) and the liquid inlet (28) of the inlet chamber (26).

Multitube reactor

In a multitube reactor gas and liquid are allowed to pass through reactor tubes, effluents are removed from the lower ends of the reactor tubes, and heat-exchange fluid is passed along the outer surfaces of the reactor tubes. To obtain a uniform distribution of liquid to the upper ends of the reactor tubes, the liquid is supplied to a plurality of adjacent trays which are in fluid communication with the reactor tubes.

Catalytic conversion of gas or liquid in a miltitube reactor

The invention relates to catalytic conversion of fluid introduced into the upper end of a vessel (1), passed through a catalyst bed in the vessel (1), passed through passage (20) between guide elements (14) arranged in the vessel (1), and removed from the lower end of the vessel (1), wherein at or near narrow parts of the passages (20) cooling fluid is introduced into the passages (20) to control the temperature in the catalyst bed.

Growing community of inventors

Amsterdam, Netherlands

David W Westerman