Abstract: A process for improving the performance of heavy oil refining units in a resid hydrotreating unit equipped for resid hydrotreating. The partially refined resid stream issuing from a train of ebullated bed reactor is first separated into high, medium, and low temperature components. The high temperature component is sent through a flash drum and then fractionated by solvent deasphalting in order to provide oil, resin, and asphaltene fractions. Thus, the asphaltene is eliminated before it can foul downstream equipment. This treatment of the heavy oil product has several benefits as compared to treating the vacuum tower bottoms. Among other things, one of these benefits is to debottleneck the resid hydrotreating unit, especially at the atmospheric tower.

Abstract: A refining process uses a two or four stage solvent separator coupled to receive an incoming feedstream of low sulfur resid and a solvent. In the preferred two stage separator, the mixture at the top of the first separator stage is fed to the second stage separator via a heat exchanger. The mixture at the bottom of the first stage separator includes resins and asphaltenes which are fed to a hydrotreater and then, in turn, to a fractionator. The output from the bottom of this fractionator can be fed back to the resid feedstream of the first stage separator for recycled separation. The material at the top of the second stage separator is fed back through the heat exchanger where it helps heat the mixture fed from the top of the first to the second stage separator, this feedback recovers the solvent for reuse in the first stage. The material settling to the bottom of the second stage separator is fed into a catalytic cracker or processed elsewhere.

Abstract: A high performance lubricating grease effectively lubricates and greases front-wheel drive joints. The lubricating grease has excellent extreme pressure properties and antiwear qualities and is economical, effective, and safe. In one preferred form, the lubricating grease comprises a base oil, a polyurea thickener, an additive package comprising calcium sulfate and calcium acetate.

Abstract: A Stage II Vapor Recovery System is provided with a special array of storage tanks, dispensers, fuel pumps, vapor assist pumps, and flow control nozzles, to capture hydrocarbon emissions, prevent condensate from blocking vapor return lines, and dispense gasoline or other liquid fuel and condensate to customer tanks. Specifically, fuel lines connect storage tank to flow control nozzles via dispensers and are assisted by fuel pumps to pump gasoline into customers' tanks. The nozzles have vapor passageways to capture hydrocarbon vapors emitted during fueling. The captured vapors are pumped by vapor assist pumps from the vapor passageways through vapor return lines into the storage tanks. The nozzles are equipped with condensate liquid pickup tubes to remove condensed vapors blocking the vapor return lines. The condensate liquid tubes communicate with condensate venturi ports adjacent venturi sleeves in the nozzles.