An injection well has become plugged with an accumulation of undesirable material that is causing the wellhead pressure required to effect a selected minimum flow rate of injection fluid into the formation to have increased to a maximum value. The method of this invention provides a process for treating the plugged formation to remove the accumulated undesirable material. The process requires a plurality of treatment cycles, and in each cycle injection fluid flows into the wellhead for a first t...

The process relates to on-line rejuvenation of adsorbent beds which are used for removing mercury from mercury contaminated feeds.

A spent catalyst comprising a zeolite base and an active metal such as a Group VIII noble metal is rejuvenated by contacting the catalyst with an aqueous solution containing urea.

An Improved Facial Rejuvenation Device and Method. The device is small and portable. The device further has an ergonomic nozzle shape defined by a housing having a suction bore defined by a throttle positioned within it. The throttle may perform its throttling action by adjusting the diameter of the suction bore formed within the housing. The method employs the unique device to create a localized suction force to the skin in the vicinity of a previously-applied medicinal formulation. The device ...

A process for alkylation of aromatic hydrocarbon reactants to dialkylbenzene products, whereby chemically modified zeolite catalysts are treated with an organic acid to enhance their intrinsic para-selectivity in the alkylation reaction. The modified zeolites which may be so reselectivated or improved comprise those crystalline zeolites having a constraint index of 1 to 12, a silica to alumina mole ratio of at least 12, and having a minor proportion of the oxide form of one or more chemical elem...

A method of facial rejuvenation is provided in which ablation of an area of skin is accomplished to above the papillary dermis, providing effective permanent smoothness.

The present invention provides a method of rejuvenating human skin by implanting a sheet formed of a pliable biocompatible material beneath the skin surface so as to generate a substantially smooth layer that augments a thickness of the skin portion. The biocompatible sheet has preferably a thickness sufficient for substantially camouflaging the underlying anatomical structure (e.g., veins and tendons).

A multistage process for etherifying C.sub.4.sup.+ aliphatic hydrocarbon feedstock containing isoalkane including the step of contacting the hydrocarbon feedstock with dehydrogenation catalyst at elevated temperature under dehydrogenation reaction conditions to obtain C.sub.4.sup.+ isoalkene and hydrogen, and separating dehydrogenation effluent to obtain an olefinic stream rich in isoalkene and a hydrogen stream. The olefinic stream and aliphatic alcohol are contacted in an esterification stage ...

A method of rejuvenating and preserving a forest by transforming wood waste. Tree species are identified in a forest area. Equipment is then selected or modified based on the identified tree species. Wood waste of the identified tree species is gathered and transformed into useful wood derived end products with the selected or modified equipment. The wood waste may be transformed into wood charcoal and used as a fuel in a furnace to heat a boiler to produce steam. The steam is used to drive a tu...

A method of rejuvenating polycrystalline metal oxide varistors whose performance characteristics may have been degraded by prolonged voltage stress is disclosed. The method includes removing voltage stress from the varistors and heating the varistors.