Abstract: Disclosed herein is a nozzle tip that atomizes a liquid entering a vessel or reaction zone that contains circulating fluidized particulates where the nozzle tip comprises a first elongated slot that intersects with a second elongated slot to define a single orifice. The first elongated slot may have members protruding into it and the slots may intersect substantially orthogonally and bisect each other. The length of the minor axis of the first slot ranges form about 5% to about 50% of the length of the major axis of the first slot and the length of the minor axis of the second slot ranges form about 1% to about 10% or the major axis of the second slot. This nozzle tip affords erosion reduction caused by the circulating fluidized particulates and therefore provides longer operational lifetimes for the nozzle tip.

Abstract: The present invention relates a process for uniformly mixing heterogeneous or multiphase systems comprising a continuous phase and at least a solid, dispersed phase in a pulsatile flow reactor (PUFR) as herein defined wherein the uniform mixing is carried out by actuating means for pulsing the continuous phase. The PUFR can be used in its horizontal or vertical orientation. The PUFR is useful for example to carry out the catalytic polymerization of olefins in a heterogeneous phase.

Abstract: An apparatus and method for effecting mass or heat transfer between the bulk of a fluid and a transfer surface boundary layer comprises a conduit having transverse baffles spaced apart from the transfer surface such that vortex mixing is induced in fluid passed along the conduit in pulsed flow. The transfer surface may be a membrane suitable for microfiltration, ultrafiltration or pervaporation.

Abstract: The instant invention provides a cyclone separator having a chamber profile designed to preclude shear planes and stagnation flows therewithin.

Abstract: This invention is about a cyclone separator, and may be applied to the cyclone separators disclosed and claimed in UK Pat. Nos. 1583742, 1583730 or 2102311, or those described in UK Patent Application 8419771 or 8511149 or 8515264. Thus, application 8419771 describes a cyclone separator which has an inlet portion having generally the form of a volume of revolution with a single tangential inlet (preferably with an involute feed channel, for introducing feed to be separated into the cyclone separator and, adjacent to the inlet portion and substantially coaxial therewith, a generally axially symmetrical separation portion converging uninterruptedly into a downstream portion. The inlet portion has an axial overflow outlet opposite the separation portion (i.e. in its end wall).

Abstract: This invention is about a cyclone separator. This separator may find application in removing a lighter phase from a large volume of a denser phase such as oil from water, with minimum contamination of the more voluminous phase. Most conventional cyclone separators are designed for the opposite purpose, that is removing a denser phase from a large volume of lighter phase, with minimum contamination of the less voluminous phase. In our case, a typical starting liquid-liquid dispersion would contain under 1% by volume of the lighter (less dense) phase, but it could be more.

Abstract: This invention relates generally to cyclone separators. The separator of the present invention may find application in removing a lighter phase from a large volume of a denser phase, such as oil from water, with minimum contamination of the more voluminous phase. Generally, cyclone separators are designed for the opposite purpose, that is, removing a denser phase from a large volume of a lighter phase, with minimum contamination of the less voluminous phase. In one form of the present invention, a typical starting liquid-liquid dispersion would contain under 1% by volume of the lighter (less dense) phase, but it could be more.

Abstract: A cyclone separator for removing oil from seawater, the oil being up to a few percent of the volume, is proportioned as follows, symbols having the meaning shown on the Figure, a notable feature being the smallness of d.sub.o, the overflow: 10.ltoreq.1.sub.2 /d.sub.2 .ltoreq.25; 0.04<4A.sub.i /.pi.d.sub.1.sup.2 .ltoreq.0.10; d.sub.o /d.sub.2 <0.1; d.sub.1 >d.sub.2 ; d.sub.2 >d.sub.3. The half-angle of the convergence of the taper T.sub.2 is from 20' to 2.degree..

Abstract: A cyclone separator for the separation of lighter material (i.e. discontinuous or dispersed phase) can cope with fluctuating proportions of lighter material in the feed stream.A retractable plug 15 at the place where the cyclone overflow outlet meets the cyclone body has a bore 16 forming the effective overflow outlet. The plug is retracted while the cyclone separator is in operation, in response to sensors, to offer a larger outlet 12 as the need arises.

Abstract: A cyclone separator for removing oil from seawater, the oil being up to a few percent of the volume, is proportioned as follows, symbols having the meaning shown on the FIGURE, a notable feature being the smallness of d.sub.o, the overflow: 10.ltoreq.1.sub.2 /d.sub.2 .ltoreq.25; 0.04<4A.sub.i /.pi.d.sub.1.sup.2 .ltoreq.0.10; d.sub.o /d.sub.2 <0.1; d.sub.1 >d.sub.2 ; d.sub.2 >d.sub.3. The half-angle of the convergence of the taper T.sub.2 is from 20' to 2.degree..

Abstract: A cyclone separator having a generally cylindrical first portion with a plurality of substantially equally circumferentially spaced tangentially directed feeds, and, adjacent to the first portion and coaxial therewith, a generally cylindrical second portion open at its far end, the first portion having an axial overflow outlet opposite the second portion, the internal diameter of the first portion being d.sub.1, and of the second portion being d.sub.2, and of which the internal length of the first portion is L.sub.1 and of the second portion is L.sub.2, the total cross-sectional area of all the feeds measured at the point of entry normal to the inlet flow being A.sub.i, the shape of the separator being governed by the following relationships:15.ltoreq.1.sub.1 /d.sub.1 .ltoreq.400.1.ltoreq.4A.sub.i /.pi..sub.1.sup.2 .ltoreq.0.20.1.ltoreq.d.sub.o /d.sub.1 .ltoreq.0.251.2.ltoreq.d.sub.1 /d.sub.2 .ltoreq.3.

Abstract: A cyclone separator having a generally cylindrical first portion with a plurality of tangentially directed feeds, and, adjacent to the first portion and coaxial therewith, a generally cylindrical second portion open at its far end, the first portion having an axial overflow outlet opposite the second portion, the second portion opening at its far end into a coaxial generally cylindrical third portion, the internal diameter of the axial overflow outlet being d.sub.0, of the first portion being d.sub.1, of the second portion being d.sub.2 and of the third portion being d.sub.3, the internal length of the first portion being l.sub.1 and of the second portion being l.sub.2, wherein the total cross-sectional area of all the feeds measured at the points of entry normal to the inlet flow is A.sub.i and wherein the shape of the separator is governed by the following relationships:10.ltoreq.l.sub.2 /d.sub.2 .ltoreq.250.04.ltoreq.4A.sub.i /.pi.d.sub.1.sup.2 .ltoreq.0.100.1.ltoreq.d.sub.0 /d.sub.2 .ltoreq.0.25d.sub.