Abstract: A rotation transfer system for change ringing bells or other swinging bells eliminates the need to elevate the bell. With the rotation transfer system, instead of placing the swinging bells several feet above the ringer, they can be placed at the same level as the ringer. If the bells (and the ringer) are at ground level, the force of the swinging bells can be transferred directly to the ground, removing the need for a strong and expensive support structure.

Abstract: A halogen-containing gas is injected into a flowing transport air/sorbent stream at a point close to the point where the sorbent and transport air first mix to maximize the residence time available for the halogen-containing compound to be adsorbed onto the sorbent surface prior to the sorbent being injected into a flue gas containing mercury. This process maximizes the benefit and utilization of the halogen-containing reagent by placing it exactly where it is needed to facilitate elemental mercury removal—on the surface of the sorbent. The sorbent particles with their loading of adsorbed halogen-containing reagent enter the flue gas with a high reactivity for the removal of elemental mercury.