Shaping capture masses for the purification of a liquid or gas feed containing heavy metals

摘要

A process for the elimination of heavy metals, in particular mercury and possibly arsenic and lead, present in a gaseous or liquid effluent by means of a fixed bed process using an adsorbent in the form of monolithic or supported extrudates, said extrudates being characterized by a length h and a section comprising at least three lobes. The adsorbent is composed of at least one active phase based on sulphur in the elemental form or in the form of a metallic sulphide. The process is advantageously applicable to the treatment of gas of industrial origin, synthesis gas, natural gas, gas phase condensates and liquid hydrocarbon feeds.

主权项

1. A fixed bed process for the elimination of heavy metals contained in a gaseous or liquid effluent, comprising bringing the effluent into contact with a capture mass in the form of a monolithic or supported extrudate comprising an active phase containing at least sulphur in the elemental form or cuprous copper sulphide, CuS, or the metallic sulphide FeS2, said extrudate being characterized by a length h in the range 0.5 to 100 mm and a section comprising at least three lobes.