The ActiSorb® series of catalysts and adsorbents are used for the purification of almost all hydrocarbon feedstocks. This purification is typically a combination of a reaction using a pre-treatment catalyst, i.e. hydrogenation, followed by adsorption with the ActiSorb adsorbent. The following table gives a general overview of the different families of ActiSorb materials.
A Zinc Oxide based adsorbent is used for removal of Sulfur components from hydrocarbon feed streams for an achieved purity of less than 0.1 ppm wt. sulfur.ActiSorb® S 2 is the perfect solution when operating at high space velocities and elevated temperatures and is available in Extrusion shape.
In some cases, it is necessary to remove sulfur to a level below 10 ppb H2S. ActiSorb® S6, a Copper-promoted Zinc Oxide, is placed in the bottom of the standard zinc oxide reactor and removes the remaining H2S to a value < 10 ppb H2S under a wide range of operating conditions. It is available in Extrusion shape.
Purification of natural gas containing low concentrations of total sulfur can also be performed by a CuO/MoO promoted Zinc Oxide catalyst ActiSorb® G1. Simultaneous hydrodesulfurisation and H2S pick-up is a feature unique to ActiSorb® G1. Even when saturated, ActiSorb® G1 catalyst fully retains its hydrogenation capabilities.
Desulfurisation of natural gas and light hydrocarbon feed stocks is also possible under ambient conditions using activated carbon. C8 catalyst series are coconut-shell-based and simple activated carbon or promoted with copper oxide. It should be noted that propane and C4+ hydrocarbons are also absorbed by the activated carbon, thereby minimising the sulfur pickup capability of the activated carbon catalysts.
HDMax ® 200 / HDMax ® 300
The standard catalysts for the hydrogenation of organic sulfur compounds in hydrocarbon feedstocks are the cobalt-molybdenum-type catalysts from the HDMax 200 series. These catalysts are used in both liquid and gas phase for all types of hydrocarbons, such as naphtha, LPG, natural gas and off-gases.For the hydrogenation of organic nitrogen compounds and/or olefin saturation, our nickel-molybdenum-based HDMax 310 catalyst is recommended.