Exxon Research and Engineering Company

Mobil Oil Corporation

Other

Exxonmobil Research and Engineering Company

Exxonmobil Technology and Engineering Company

Charles L Baker

Dominick N Mazzone

Craig A Joseph

Thomas F Degnan

David O Marler

Dennis E Walsh

Cynthia T-w Chu

Stephen A Geibel

Halou Oumar-Mahamat

Shuji Luo

Eric Bart Sirota

Michael B Carroll

Suzzy C Ho

Marc-Andre Poirier

Keith K Aldous

Kendall S Fruchey

George D Cody

Richard Charles Dougherty

Uri Sela

Minas R Apelian

Michael B Whitlock

Tracie L Owens

James William Gleeson

Mark F Hurwitz

Nancy M Page

Vera Minak-Bernero

Min Chang

Eugene R Elzinga, Jr

Eric B Senzer

Camden N Henderson

Robert T Hanlon

Lisa I Yeh

David Mentzer

Dennis A Gaal

Steven Pyl

John E Gallagher, Jr

Christine A Zielinski

Tore H Lindstrom

Gerald V Storch, Jr

Norman G Cathcart

Mickeal Mannino

Min Chen

Clara Rodrigue

Joshua D Catanach

E R Elzinga, Jr

Nick A Hilder

Chung-Lai Wong

Rugved P Pathare

Kim Elizabeth Fyfe

Provided herein are hydrocarbon compositions suitable for use as a lubricant comprising sulfur between about 30 ppm to about 220 ppm, and aromatics between about 0.2 wt. % to about 3 wt. %. The present hydrocarbon compositions comprise a blend of one or more base stocks and a high-sulfur containing material and can demonstrate an improved oxidation performance as a lubricant in weighted piston deposit merits and/or by viscosity increase.

Hydrocarbon compositions useful as lubricants for improved oxidation stability

The present invention is a process for removing waxy haze from and improving the filterability of base stocks including heavy mineral oil base stocks, gas-to-liquids (GTL) and hydrodewaxed or hydroisomerized waxy feed basestocks by filtering the waxy haze causing particles out of the base stock employing a filter characterized by a high surface area of pores accessible to the haze wax particles which have particles dimensions of no more than about 5 microns.

Method for haze mitigation and filterability improvement for base stocks

This application discloses a process for catalytically dewaxing a feedstock whereby the aging of the dewaxing catalyst is minimized. A variety of feedstocks which possess moderate levels of nitrogen and sulfur may be dewaxed in this invention. The feed is treated by a catalyst system comprising two catalysts acting in synergistic combination, a hydrotreating catalyst and a dewaxing catalyst. The hydrotreating catalyst is preferably loaded with noble metals and is capable of operating at higher than usual space velocities. The dewaxing catalyst is downstream of the hydrotreating catalyst. The dewaxing catalyst further comprises a constrained intermediate pore crystalline material which is loaded with a noble metal.

Process for highly shape selective dewaxing which retards catalyst aging

The present invention is a method for the non-intrusive determination of average particle velocity and average particle mass density from the mass flux and RMS acceleration in a gas/particle transfer line. The method includes the steps of determining the RMS acceleration of the wall of the transfer line at one or more positions along the length of the transfer line, determining the average mass flux through the transfer line, and from both quantities determining the average particle mass density or the average particle velocity from the RMS acceleration and the average mass flux.

Passive acoustics process to monitor transfer lines of a reactor

The present invention is a method for non-intrusively monitoring the chemical and physical processes associated with gas generation in the feed riser of a cat-cracker and the correlation of those changes in these processes to changes in the output product produced the cat-cracker. The method includes the steps of measuring RMS accelerations along a feed riser at one or more positions, determining the initial RMS acceleration at each of these positions when the unit is operating at its desired performance, comparing the measured FRP to the reference FRP when said reactor is operating at its desired performance and determining the reference FRP, and determining the change in the FRP.

Passive acoustics process to monitor feed injection lines of a catalytic

A bottoms fraction of fuels hydrocracking which boils above about 600.degree. F. and contains at least 10 wt. % aromatics is converted to a reduced aromatics lube/base stock product over a catalyst comprising a crystalline material which exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams anhydrous crystal at 50 torr and 25.degree. C. and a-hydrogenation-dehydrogenation functionality, preferably palladium, under high pressure conditions sufficient to reduce the aromatics content to about 10 wt. %. The bottoms fraction is dewaxed prior to high pressure hydroprocessing over a catalyst comprising HZSM-5 to reduce the pour point of the fraction to about 20.degree. F. Typically, the bottoms fraction is produced in a moderate pressure fuels hydrocracking process over a bifunctional amorphous catalyst.

Lubricant hydrocracking process

Petroleum wax feeds are converted to high Viscosity Index lubricants by a two-step hydrocracking-hydroisomerization process in which the wax feed is initially subjected to hydrocracking under mild conditions with a conversion to non-lube range products of no more than about 30 weight percent of the feed. The hydrocracking is carried out at a hydrogen pressure of at least 1000 psig using an amorphous catalyst which preferentially removes the aromatic components present in the initial feed. The hydrocracked effluent is then subjected to hydroisomerization in a second step using a low acidity dicarboxylic acid-treated zeolite Beta or mordenite catalyst which effects a preferential isomerization on the paraffin components to less waxy, high V.I. isoparaffins. The second stage may be operated at high pressure by cascading the first stage product into the second stage or at a lower pressure, typically from 200 to 1000 psig. The second stage catalyst is preferably a noble metal containing zeolite Beta catalyst which is treated with oxalic acid to give a low Alpha Value, typically below 10. The second stage is carried out at relatively low temperature, typically from 600.degree. to 650.degree. F. with a 650.degree. F.+ conversion in the range of 10 to 20 weight percent of the second stage feed but with high selectivity for isomerization of the paraffins. A final dewaxing step to target pour point may be used with relatively low loss, typically no more than 15 weight percent, during this dewaxing. The final products typically have V.I. values in excess of 130 and usually in the range of 140 to 155 and are characterized by exceptional stability.

Production of high viscosity index lubricants

This invention relates to the production of high viscosity index lubricants from mineral oil feedstocks, e.g., petroleum waxes, by hydrocracking in a first stage, followed by a combined hydroisomerization-hydrotreating process in a second stage, wherein the temperature in the second stage is closely controlled by regulating the amount of nitrogen-containing compounds which are permitted into the second stage.

A method for measuring the mass flow rate of liquid flow exiting a two phase (gas/liquid) feed nozzle. The method includes determining the Power Spectral Density from the output of a vibrational sensor (accelerometer or dynamic pressure sensor) in close proximity to the nozzle or in contact with the fluid within the nozzle in a frequency band that includes resonant peaks whose magnitude or area is strongly dependent on the mass flow rate of the liquid and which increases as the flow increases. Measurement of the area of the resonant peaks or of a band of frequencies that includes them can be correlated with the liquid flow and is insensitive to the gas flow.

Non-intrusive liquid flow meter for liquid component of two phase flow

Passive coustic method for monitoring and controlling flow state of two phase fluids through feed nozzles and thereby improving operating stability and high product value yields in major refinery processes or any other process where a finely atomized liquid stream exiting the nozzle is important.

Acoustic monitoring of two phase feed nozzles

Passive acoustic method for monitoring and controlling flow state of two phase fluids through feed nozzles and thereby improving operating stability and high product value yields in major refinery processes or any other process where a finely atomized liquid stream exiting the nozzle is important.

A self-contained emergency escape device includes a first larger jaw, a second smaller jaw, a bolt mounting the jaws for relative movement, a yoke defined at the upper end of the first jaw, and a take-up spool secured within said yoke. Several brake plugs are secured to the interior edges of the jaws, and complementary cut-outs are defined in the opposing edges of the jaws. A sturdy cable is an integral part of the escape device, and extends through the device in a tortuous path extending over the brake plugs and subsequently being stored, when not in use, on the spool. A sling is secured to the jaws so that the user can not be separated from, or fall away from, the emergency escape device. Also, a fail-safe mechanism prevents the jaws from being forced too far apart. One uses the device by applying manual pressure to the jaws to increase the frictional resistance on the cable and thus controlling the rate of descent.

Self-contained emergency escape device

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Thornton, PA, United States of America

Charles L Baker