Abstract:

This paper introduces a new kind of built-in scale collector. The structure and working principle of the collector are introduced in detail. Compared with the prior art, the built-in scale collector has advantages of simple structure, and larger dirt holding capacity,good scaling effect. It does not occupy the catalyst bed space and can effectively delay the increase rate of reactor bed pressure drop, and prolong the operation cycle of the reactor. The built-in scale collector were applied successfully in wax hydrofining unit of Yanshan Petrochemical Branch, the pressure drop of the reactor is less than 0.1 MPa and the life cycle of the reactor are prolonged

Key words: hydrogenation reactor, built-in scale collector, flow pattern