摘要:
A process for re-refining used lubricating oil (ULO) having thermally unstable additives. ULO is heated by mixing with superheated lubricant boiling range hydrocarbons recovered and recycled from the process. The mixture of ULO feed and superheated hydrocarbons is charged to a vacuum column, producing an overhead vapor free of unstable additives and a residual fraction, containing additives. The overhead vapor is condensed to produce an overhead liquid of lubricant boiling range hydrocarbons, a portion of which is recovered as a product and a portion of which is recycled. The overhead liquid free of unstable additives, may be superheated without fouling to produce superheated fluid which can heat the ULO feed sufficiently to permit fractionation. Superheating may occur in a fired heater or preferably in a heat exchanger to prevent high temperatures and cracking of recycled liquid. Mixing of superheated fluid and ULO feed may occur in a pipe in fully developed turbulent flow, and preferably via an inline mixer. Energy efficiency is improved by heat exchanging ULO feed with product streams.
摘要:
The surface treatment of the present invention is formed from a thermoplastic powder that can be used for a large variety of applications including, but not limited to, containers, flooring, table tops, bathroom fixtures, such as tubs, shower stalls, and the like, trays, coasters, tray supports, tools, measuring devices, musical instrument parts, motorized vehicle surfaces, building structures and components, bridges, railroad and mass transportation articles, and instruments. Further, such surface treatments having illuminating materials and/or reflective materials can be used for flooring or wall surfaces or on articles for operating in darken conditions or conditions with limited visibility.
摘要:
A vortex flowmeter is provided with a vortex-inducing bluff body in the form of a first, upstream, cylinder having a semi-circular or semi-ellipsoidal front surface and a planar rear surface, and a second, downstream, cylinder having a planar front surface and a planar or concave rear surface. The rear surface of the upstream cylinder is parallel to the front surface of the downstream cylinder, and separated from it by a gap whose width is preferably about 25% of the diameter of the upstream cylinder.
摘要:
A device for recovering oil floating on the surface of water comprising a framework (50) and a number of discs (51) rotatably mounted thereon. The framework is supported on floats (58,59) with the discs partly immersed in the water, and each disc is associated with a scraper (57) and chute (54) so that oil removed from the disc is deposited into a collection tray (52) from which it can be removed via line (53). Each disc (51) carries at least one axially directed concentric ring (4,5) which presents an inwardly directed surface (7,8). Each disc may carry a plurality of rings of the same or different axial depths.
摘要:
An integrated plant that includes a steam explosion process unit and biomass gasifier to generate syngas from biomass. A steam explosion process unit applies a combination of heat, pressure, and moisture to the biomass to make the biomass into a moist fine particle form. The steam explosion process unit applies steam with a high pressure to heat and pressurize any gases and fluids present inside the biomass to internally blow apart the bulk structure of the biomass via a rapid depressurization of the biomass with the increased moisture content. Those produced moist fine particles of biomass are subsequently fed to a feed section of the biomass gasifier, which reacts the biomass particles in a rapid biomass gasification reaction to produce syngas components.
摘要:
A radiant heat chemical reactor is configured to generate chemical products including synthesis gas products. Two or more tubes in the radiant heat chemical reactor separate an exothermic heat source, such as flames and gas from a regenerative burner, from the endothermic reaction of the reactant gas occurring within the cavity of the refractory vessel. The exothermic heat source heats a space inside the tubes. One or more feed lines supply chemical reactants to the cavity area between an inner wall of the cavity of the refractory vessel of the chemical reactor and the two or more tubes that are internally heated located with the cavity.
摘要:
Various processes and apparatus are discussed for an ultra-high heat flux chemical reactor. A thermal receiver and the reactor tubes are aligned to 1) absorb and re-emit radiant energy, 2) highly reflect radiant energy, and 3) any combination of these, to maintain an operational temperature of the enclosed ultra-high heat flux chemical reactor. Particles of biomass are gasified in the presence of a steam carrier gas and methane in a simultaneous steam reformation and steam biomass gasification reaction to produce reaction products that include hydrogen and carbon monoxide gas using the ultra-high heat flux thermal energy radiated from the inner wall and then into the multiple reactor tubes. The multiple reactor tubes and cavity walls of the receiver transfer energy primarily by radiation absorption and re-radiation, rather than by convection or conduction, to the reactants in the chemical reaction to drive the endothermic chemical reaction flowing in the reactor tubes.
摘要:
Apparatus for measuring fluid flow comprising a tubular body (4) within which is supported an insert (5) having on its outer surface a helical formation of crests (6) and troughs (7). Between the body (4) and the insert (5) there is a fluid flow path (8). A transducer (20) detects fluctuations in fluid flow characteristics in the path (8), and a resultant signal is transmitted via amplifier (21), filter (22) and frequency counter (23) to a display (24) calibrated in terms of rate of fluid flow along the path (8).
摘要:
A radiant heat chemical reactor is configured to generate chemical products including synthesis gas products. Two or more tubes in the radiant heat chemical reactor separate an exothermic heat source, such as flames and gas from a regenerative burner, from the endothermic reaction of the reactant gas occurring within the cavity of the refractory vessel. The exothermic heat source heats a space inside the tubes. One or more feed lines supply chemical reactants to the cavity area between an inner wall of the cavity of the refractory vessel of the chemical reactor and the two or more tubes that are internally heated located with the cavity.
摘要:
An integrated plant generates syngas from biomass, where the integrated plant includes a Thermo Mechanical Pulping (TMP) process, a biomass gasifier, a methanol synthesis process, and a liquid fuel generation process. Biomass is received as a feedstock in the TMP process. The biomass is pre-treated in the TMP process for subsequent supply to the biomass gasifier by using a combination of heat, pressure, moisture, and mechanical agitation that are applied to the biomass to make the biomass into a pulp form. The TMP process breaks down a bulk structure of the received biomass, at least in part, by applying steam to degrade bonds between lignin and hemi-cellulose from cellulose fibers of the biomass. Next, the broken down particles of the biomass are reacted in a biomass gasification reaction at a temperature of greater than 700 degrees C. to create syngas components, which are fed to a methanol synthesis process.