This disclosure relates to a method of improving the yield-octane number relationship of a reformate or reformer effluent by contacting the same at conversion conditions in the presence of hydrogen with crystalline aluminosilicate zeolites characterized by (1) having a silica to alumina ratio greater than 15 (preferably greater than 20); (2) having been crystallized from a solution containing organic cations so that the aluminosilicate as synthesized contains organic cations and (3) having pore ...

A steel converter having bottom tuyeres supplied from a plurality of solids-weighing tanks which discharge selectively under pressure into a single conduit serving the tuyers. The weighing tanks are isolated from the conduit by individual flex-joints which permit relative motion between their ends, without detrimental stresses as a result of pressure-changes, while maintaining aeration of the material passing through the flex-joint.

A process for disproportionating feed light alkane to obtain higher molecular weight hydrocarbons which comprises contacting the feed light alkane, at elevated temperature and pressure, with a catalyst comprising a molecular sieve composited with a Group VIII noble metal. Preferably the contacting is carried out in the presence of H.sub.2 O.

A process for converting an alkyl aromatic to a different alkyl aromatic which comprises contacting the alkyl aromatic and an alkane having at least two carbon atoms with a catalyst mass having a component which has catalytic activity for alkane dehydrogenation and a second component which has catalytic activity for olefin averaging. Preferred alkyl aromatic feedstocks are ethyl benzene and butyl benzene. A particularly preferred catalytic mass for the reaction comprises platinum on alumina and ...

A system for converting electrical input pulses generated by an input pulse source to a predetermined unit of measure. Electronic scalers, triggered by the input pulses, sequentially generate a preselected number of output pulses. In the conversion system each output pulse represents a fixed integral number. The conversion factor per pulse is the total of output pulses divided by the number of input pulses.

An olefin hydrocarbon, for example, propylene and/or a butene, is converted to at least one other olefin hydrocarbon, for example, isoamylenes, in a catalytic conversion process utilizing simultaneous or sequential contacting of an olefin reaction catalyst and a skeletal isomerization catalyst.

Isoparaffins are converted in a reaction zone to other hydrocarbons including isoparaffins containing fewer carbon atoms per molecule and isoparaffins containing more carbon atoms per molecule by contacting an isoparaffin feedstock with hydrofluoric acid in the presence of an amount of an olefin which is sufficient to increase the conversion of said feedstock. In a combination process said isoparaffin product containing fewer carbon atoms per molecule than the isoparaffin feedstock is passed to ...

Olefin hydrocarbons are disproportionated by contacting with a catalyst comprising an oxide of rhenium.

Conversion apparatus and methods for converting two-out-of-six digital code signals into binary code signals. The numerical value of the positions of the two "1's" in the two-out-of-six code signals are added together, along with a constant, shifted by the value of the position of the leftmost "1." This scheme is implemented by programming a general purpose computer, and by special purpose hardware, both using shift registers and adding circuits.

Apparatus is disclosed for automatically converting inches to the metric system of measurement and for printing-out both the inch value and the metric equivalent on the surface upon which such apparatus is disposed. The apparatus may be adapted to any conversion process having a limited number of significant digits in the conversion factor.