A baffle system (100, 200, 400) for improved mixing in a cylindrical reactor, the cylindrical reactor defining a reactor axis extending along a height of the cylindrical reactor, the baffle system (100, 200, 300) comprising: a cylindrical ring (101, 201, 401) having an exterior surface (103, 203, 403) defining an outer diameter (Do) and an outer circumference, an interior surface (105, 205, 405) defining an inner diameter (Di) and an inner circumference, a top surface (107, 207, 407), a bottom surface (109, 209, 409) opposite and parallel to the top surface (107, 207, 407), and an axis extending through an axial center alignable with the reactor axis; and one or more substantially vertical baffles (111, 211, 411) extending from the interior surface (105, 205, 405) of the ring (101, 201, 401) toward the axis; wherein the ring (101, 201, 401) is continuous or discontinuous along the outer circumference, the inner circumference, or both the outer circumference and the inner circumference, wherein the ring (101, 201, 401) defines a height extending between the top surface (107, 207, 407) and the bottom surface (109, 209, 409) in a direction along the axis; wherein the ring (101, 201, 401) defines a width extending between the outer diameter (D O) and the inner diameter (D I) in a direction transverse to the axis; wherein the height of the ring (101, 201, 401) is greater than the width of the ring (101, 201, 401); wherein the one or more substantially vertical baffles (111, 211, 411) has a length of from 0.1 times to 10 times the outer diameter of the ring (101, 201, 401); wherein the one or more substantially vertical baffles (111, 211, 411) has a length which extends vertically above the top surface (107, 207, 407) of the cylindrical ring (101, 201, 401), vertically below the bottom surface (109, 209, 409) of the cylindrical ring (101, 201, 401), or both; and wherein the one or more substantially vertical baffles (111, 211, 411) are planar. a cylindrical ring (101, 201, 401) having an exterior surface (103, 203, 403) defining an outer diameter (Do) and an outer circumference, an interior surface (105, 205, 405) defining an inner diameter (Di) and an inner circumference, a top surface (107, 207, 407), a bottom surface (109, 209, 409) opposite and parallel to the top surface (107, 207, 407), and an axis extending through an axial center alignable with the reactor axis; and one or more substantially vertical baffles (111, 211, 411) extending from the interior surface (105, 205, 405) of the ring (101, 201, 401) toward the axis; wherein the ring (101, 201, 401) is continuous or discontinuous along the outer circumference, the inner circumference, or both the outer circumference and the inner circumference, wherein the ring (101, 201, 401) defines a height extending between the top surface (107, 207, 407) and the bottom surface (109, 209, 409) in a direction along the axis; wherein the ring (101, 201, 401) defines a width extending between the outer diameter (D O) and the inner diameter (D I) in a direction transverse to the axis; wherein the height of the ring (101, 201, 401) is greater than the width of the ring (101, 201, 401); wherein the one or more substantially vertical baffles (111, 211, 411) has a length of from 0.1 times to 10 times the outer diameter of the ring (101, 201, 401); wherein the one or more substantially vertical baffles (111, 211, 411) has a length which extends vertically above the top surface (107, 207, 407) of the cylindrical ring (101, 201, 401), vertically below the bottom surface (109, 209, 409) of the cylindrical ring (101, 201, 401), or both; and wherein the one or more substantially vertical baffles (111, 211, 411) are planar.