Abstract:
A system for effecting the pretreatment therewith of a sorbent comprising a conveying line (105), such as a pipe, and a plurality of solution nozzles operative for purposes of introducing a solution to treat the sorbent. More particularly, the conveying line (105) includes an inlet (107), an outlet (109), and an inner surface (105a) that is operative to define a passageway (190) through which sorbent particles are capable of being transported between the inlet (107) of the conveying line (105) and the outlet (109) of the conveying line (105). Each of the plurality of solution nozzles includes a respective one of a plurality of orifices (120) that are designed to be disposed circumferentially about the inner surface (105a) of the conveying line (105) and that are designed to be operative to effect therewith the injection of an aqueous solution of a liquid sorbent conditioner into the passageway (190) in order to thereby effect therewith the pretreatment of sorbent particles that are being transported through the passageway (190) in the conveying line (105).
Abstract:
Sorbent compositions containing halogen and calcium are added to coal to mitigate the release of sulfur and/or other harmful elements, including mercury, into the environment during combustion of coal containing natural levels of mercury.
Abstract:
Disclosed herein is a method for preparing a dry regenerable sorbent which comprises the steps of obtaining a slurry through formulation, mixing, comminuting and dispersion of the sorbent raw materials, forming the slurry by spray drying to produce sorbent particles, and calcining the sorbent particles. In the step of obtaining a slurry, there is used organic additives (dispersant, a flow control agent, and an organic binder) necessary to obtain a well-dispersed, stable and free-flowing slurry in which the raw materials are present below a sub-micron level (nanosize). The organic additives are removed and decomposed through the calcining. The use of the hydrophilic and high specific surface area support allows the dry regenerable sorbent to have a high reactivity. The solid active component is used instead of a liquid amine used in a conventional wet carbon dioxide capture technology. In addition, the sorbent can be re-used through continuous sorption and regeneration processes.
Abstract:
Sulfur dioxide (SO2) is removed from carbon dioxide feed gas comprising SO2 as a contaminant by maintaining the carbon dioxide feed gas at an elevated pressure in contact with an alkaline sorbent for a period of time sufficient to react said alkaline sorbent with SO2. Where NOx, oxygen (O2) and water are also present, not only is the rate of reaction with the sorbent increased, but also additional SO2 is removed by conversion to sulfuric acid, and NOx is removed as nitric acid. The method has particular application in the removal of SO2 and NOx from flue gas produced by oxyfuel combustion of a hydrocarbon or carbonaceous fuel.
Abstract:
Sorbent compositions containing halogen and calcium are added to coal to mitigate the release of sulfur and/or other harmful elements, including mercury, into the environment during combustion of coal containing natural levels of mercury.
Abstract:
The present invention relates to a process for the purification of water by adding surface-reacted calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20° C., to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids and the use of the surface-reacted natural calcium carbonate for this process.
Abstract:
Sorbent compositions containing halogen and calcium are added to coal to mitigate the release of sulfur and/or other harmful elements, including mercury, into the environment during combustion of coal containing natural levels of mercury.
Abstract:
A method and apparatus for supplying heat and humidity to gas filled spaces by the addition of water to a dehydrated material that releases heat upon exposure to water, exposing the hydrated material to dry contacting gas which results in loss of water from the hydrated material to the contacting gas, the contacting gas being heated and humidified by such exposure, and subsequent dispersal of the added heat and humidity to the gas filled space. This sequence also results in regeneration of the dehydrated material so that these steps may be repeated. By limiting the amount of water addition to the dehydrated material within a cycle of the process, less time and/or energy is required to regenerate the dehydrated material and finer control of resultant living space humidity may be possible.
Abstract:
An embodiment relates to a photocatalytic composite material comprising (a) a first component that generates a photoexcited electron and has at least a certain minimum bandgap to absorb visible light and a structure that substantially prevents the recombination of the photoexcited electron and a hole; (b) a second component that adsorbs/absorbs an oxide of carbon; and (c) a third component that splits the oxide of carbon into carbon and oxygen using the photoexcited electron.
Abstract:
An odor filtration media having a chemical reagent which removes odor causing fluid contaminants from a fluid stream through the use of granular or shaped media have a chemical composition including permanganate is provided. A method of producing the odor absorbing media having a chemical reagent is also provided and comprises the steps of mixing H2O, KMnO4, and at least one salt adding ions or ionic compounds selected from the group consisting of Na+, Li+, K+, NH4+, Cl−, SO42−, BO32−, CO32−, PO43−, NO3− and combinations thereof, or from the group consisting of Na+, Li+, K+, NH4+, Mg2+, Ca2+, Cl−, BO32−, NO3− and combinations thereof, forming an impregnating solution. The impregnating solution is heated and combined with a support material to form a coherent mass.