Abstract:
A hydrophobic adsorbent composition and process for removal of mercury from a gas phase fluid near the water and/or hydrocarbon dew point is disclosed herein.
Abstract:
A method for controlling mercury release, emission and/or re-emission levels in a treated flue gas and a seawater effluent waste stream through control of a sulphite concentration within a seawater scrubber system is disclosed. One method for controlling mercury release, emission and re-emission levels through control of sulphite concentration is to measure the sulphite concentration of seawater entering a seawater scrubber system and comparing the same to a predetermined sulphite concentration value. If the comparison reveals the measured sulphite concentration is above the predetermined sulphite concentration values, the amount of fresh seawater and/or oxidation air supplied to the seawater scrubber system is increased. If the comparison reveals the measured sulphite concentration is below the predetermined sulphite concentration values, the amount of fresh seawater and oxidation air supplied to the seawater scrubber system is decreased.
Abstract:
Die Erfindung betrifft ein Verfahren zur Abscheidung von Quecksilber aus Rauchgasen von Verbrennungsanlagen, wobei das Verfahren das Bereitstellen eines Adsorbens auf der Basis von Kohlenstoff, die Herstellung einer wässrigen Suspension mit dem Adsorbens, das Einbringen der Suspension in den Rauchgasstrom der Verbrennungsanlagen in die trockene, wasserdampfuntersättigte Gasphase des Rauchgases und Beladen des Adsorbens mit Quecksilber über eine vorgegebene Reaktionsstrecke, das Aushalten des mit Quecksilber beladenen Adsorbens aus dem Rauchgasstrom sowie das Deponieren oder Regenerieren des Quecksilber beladenen Adsorbens umfasst.
Abstract:
Elemental mercury is removed from a gas by contacting it with a halogen dissolved in an organic solvent. The mercury accumulates in the organic solvent and can be removed by extraction with an aqueous solution with a complexing agent, by adsorption, and by combinations. The absorption process can also operate by use of a series of absorbers which have successively higher concentrations of halogen in the solution and which successively remove more the mercury from the gas. A portion of the solvent in the last absorber can be cascaded to the previous absorber in the series. In one embodiment, the process is carried out at a temperature of absorber at less than or equal to 28°C above the higher of the water dew point and the hydrocarbon dew point. The mercury waste from the process is produced as either an aqueous solution or a small volume of mercuric sulfide.
Abstract:
This invention provides a method of removing sulfur oxides, mercury vapor and other contaminants from a flue gas stream and a flue gas treatment device comprising a sorbent polymer composite substrate comprising a high surface area support and a durable halogen source adjacent the sorbent polymer composite substrate. The halogen source comprises a compound with a quaternary ammonium halogen salt that is not washed away.
Abstract:
Disclosed herein are activated carbon having a particle size distribution of d95 ranging from 1 μιη to 28 μιη and a d95/d5o ratio ranging from 1.5 to 3, compositions comprising such activated carbons and methods of making the same, and methods of mercury removal from flue gas generated from coal combustion by injecting activated carbon into the flue gas.
Abstract:
La présente invention concerne une masse de captation comprenant une matrice oxyde majoritairement aluminique calcinée et une phase active comprenant au moins un sulfure métallique dont le métal est choisi dans le groupe constitué par le cuivre, le chrome, le manganèse, le fer, le cobalt et le nickel, ladite phase active étant au moins en partie comalaxée au sein de ladite matrice oxyde majoritairement aluminique calcinée, le pourcentage poids du ou des métaux de la phase active, exprimé par rapport aux poids total de la masse de captation étant compris entre 4 et 55 %, ladite masse étant caractérisée par une distribution en taille de pores trimodale. Elle concerne également des procédés de préparation de ladite masse par comalaxage et son utilisation dans un procédé de captation de métaux lourds dans un effluent gazeux ou liquide.
Abstract:
A filtration medium comprises a textile substrate and a mercury abatement coating on a least a portion of the surface of the textile substrate. The mercury abatement coating comprises a copper salt, a binder, and other optional components. A process for removing mercury from a gaseous stream uses the filtration medium.