Static mixing elements with a separator and deflecting surfaces and static mixers

A static mixing element in a flow channel of a tube, comprising:

• a separating web with a height and extending in a plane through an axis of the tube in parallel to an axial flow direction and extending over an entire diameter thereof;
• two blade-like deflection surfaces adjoining the separating web in planes transverse to the tube axis, the two blade-like deflection surfaces completely covering a sector of a cross-section and delimiting two axial sections in an axial projection;
• and
• two windows for axial passage of a flow from a first axial section on an inlet side to respectively opposite sides of the separating web into a second axial section on an outlet side,
• the deflection surfaces having raised edges as lateral boundaries to the windows on the inlet side, the raised edges meeting in the axis of the tube and protruding against a flow direction over the deflection surface,
• the deflection surfaces or axial projections thereof completely cover an area of at least 56% of the tube cross-section, and the deflection surfaces being mutually inclined towards a center web and towards a cross-section plane or being raised from the cross-section plane,
• such that a area downstream of the deflection surfaces and up to the an outlet plane in an axial plane, perpendicular to the separating web and through the tube axis, is increased by at least 25% compared to a value without inclination or elevation.