Abstract: Improved method, apparatus and system for treating bilge water and other marine emulsion wastes comprising water and hydrocarbon, and possibly solids in some cases. Microwave Separation Technology (MST) is used to treat a broad class of emulsion wastes associated with, generated by, or carried at sea on, ships or other marine entities (such as drilling platforms, oil spill clean-up systems, etc.). The hydrocarbon component from a marine emulsion waste comprising water and hydrocarbon, and possibly solids in some cases, is concentrated (e.g., the emulsion's water content is reduced) so that the volume of waste material that requires off-loading or out-hauling (or both) is reduced over conventional methods of separating emulsion wastes for disposal. In view of the reductions achieved in process volumes, significant cost savings may be realized. Better compliance with environmental laws and standards may also be realized.

Abstract: The present invention is directed to a cascade catalytic hydrotreating/dewaxing process, wherein a hydrocarbon feedstock containing waxy components is treated. The hydrotreating phase precedes the dewaxing phase in order to remove contaminants, such as nitrogen and sulfur, from the feedstock to prolong the life of the catalyst used in the subsequent dewaxing step. A conventional hydrotreating catalyst is used. The dewaxing catalyst is a Zeolite Beta catalyst. The cascade process is conducted with or without interstage gas separation. The treatment occurs in the same or in separate reactors. The ratio of hydrotreating catalyst to dewaxing catalyst is greater than 1:2. This sequence of treatments enhances distillate yields and lowers processing and capital costs.

Abstract: A process for dewaxing a hydrocarbon feedstock with a relatively high pour point and containing normal and slightly branched paraffins by subjecting said feed to catalytic dewaxing over a noble metal promoted zeolite beta catalyst followed by dewaxing with a base metal promoted zeolite beta catalyst. The feed may be hydrotreated before dewaxing.