The invention relates to a device for the manufacture by extrusion of a porous tubular support from a ceramic composition, the device including: a fixed extrusion die (6) in which is mounted a punch holder (7) provided with a centered rectilinear punch (8a) and with at least one helically-shaped punch (8) wound around an axis of symmetry (X) along a winding direction and a winding pitch; a system (10) for driving in rotation the punch holder (7) around said axis of symmetry (X) along a direction of rotation opposite to the direction of winding of the punch(es) (8) and at a speed of rotation synchronized with the linear speed of extrusion of the ceramic composition.

A high-flux silicon carbide ceramic filter membrane and a preparation method thereof are provided. In the preparation method, a separation layer is directly coated at a time on the basis of a support, that is, after the support is sintered, the separation layer is directly coated and then sintered for carbon removal. In the present disclosure, a sintering process and a coating formula are optimized to prevent fine silicon carbide particles from entering micropores of a support due to capillary filtration and film formation during coating, such that a separation layer with an average pore size of 0.2 m or less can be directly coated on a silicon carbide support with an average pore size of 10 m or more, and fine silicon carbide particles can be effectively prevented from entering micropores of the support during the coating.

A system, method and device are disclosed for bio-processing a feed stream and providing a constant output by operating a continuous single-pass tangential-flow process. The single-pass process provides high conversion concentration while operating at relatively low feed flow rates, and the process can also be used to provide constant output diafiltration.

The present invention relates to a method of making a monolith having a plurality of channels extending therethrough, the method comprising,

providing a suspension of polymer-coated particles in a first solvent;

extruding the suspension from a primary orifice, while passing one or more second solvents from a plurality of secondary orifices arranged within the first orifice, into a third solvent, whereby a monolith precursor is formed from the polymer and particles,

and sintering the monolith precursor to form a monolith.

The present disclosure relates, according to some embodiments, to systems, apparatus, and methods for fluid purification (e.g., water) with a ceramic membrane. For example, the present disclosure relates, in some embodiments, to a cross-flow fluid filtration assembly comprising (a) membrane housing comprising a plurality of hexagonal prism shaped membranes (b) an inlet configured to receive the contaminated fluid and to channel a contaminated fluid to the first end of the plurality of hexagonal prism shaped membranes, and (c) an outlet configured to receive a permeate released from the second end of the plurality of hexagonal shaped membranes. The present disclosure also relates to a cross-flow fluid filtration module comprising a fluid path defined by a contaminated media inlet chamber, a fluid filtration assembly positioned in a permeate chamber and a concentrate chamber.

Cyclonic separation devices and fluid stream separating apparatuses incorporating cyclonic separation devices are described. A cyclonic separation device may include an exterior housing having an exterior cylindrical portion and an exterior conical portion extending from the exterior cylindrical portion and an interior housing having an interior cylindrical portion and an interior conical portion extending from the interior cylindrical portion. The interior housing is positioned relative to the exterior housing to form a circulating chamber. The cyclonic separation device also includes a fluid inlet coupled to the exterior housing, where the fluid inlet positioned to inject a fluid stream into the circulating chamber at an orientation generally tangential to the cylindrical portions of the exterior housing and the interior housing. The cyclonic separation device further includes a low-density outlet coupled to at least one of the exterior conical portion or the interior conical portion.

A ceramic membrane including a feed flow inlet, a retentate flow outlet, a permeate flow outlet, a membrane interface portion. The membrane interface portion include a feed flow channel fluidly coupled to the feed flow inlet and to the retentate flow outlet and permeate flow channel fluidly coupled to the retentate flow outlet, wherein the membrane interface portion is operable to allow for fluid communication between the feed flow channels and the permeate flow channels through a membrane portion, and wherein the ceramic membrane has an open porosity of at least 10%. Also provided is a process for preparing the ceramic membrane by additive manufacture.

The invention concerns a method for producing a porous monolithic inorganic support (1) using a 3D printing machine comprising at least one extrusion head (6) mounted moveably in space. The method consists of: Driving the extrusion head according to a numerical trajectory so that: for an overlapping path, the material being deposited partially overlaps at least one edge of a previously deposited material deposition, by an overlapping material part presented in its thickness and having a thickness strictly less than the nominal height (e) so as to avoid spaces between the rounded edges of the material deposition being deposited and those of the material deposition previously deposited, for a crossing path, the material being deposited intersects at least one previously deposited material deposition with a complete overlap of said previously deposited material deposition, by an overlapping material part presented in its thickness and having a thickness strictly less than the nominal height (e).

A filter device includes one or more filter membranes, and a filter housing enclosing the one or more filter membranes. Each of the filter membranes includes a base membrane made of a ceramic material, and a plurality of through holes. The base membrane is coated with a coating material.

A sealing element (5) for a filter element (2) in a housing body (1) of a filtration device, preferably in a cross-flow filtration device. The sealing element (5) is of one-piece annular design and comprises a section for the sealing arrangement of the filter element (2) in the housing body (1) and a section for stop damping the filter element (2).