摘要:
Methods, systems and designs are provided for removing mercury from crudes. Crude oil is heated to a temperature above 100°C and held at that temperature for a specified period of time to convert all of the forms of mercury in the oil into the elemental mercury form. The elemental mercury is then stripped from the crude oil by e.g., flashing the hot oil and/or contacting it with a gas phase. This process transfers the elemental mercury from the oil phase into the gas phase. Elemental mercury can then be removed from the gas phase by methods such as condensation, precipitation, or absorption either alone or in combination.
摘要:
A fluid detecting device for detecting the presence of a substance in a fluid in an area comprising: a heating element arranged in said area, a first thermal sensor arranged adjacent to said heating element adapted to detect a temperature (T1) at said heating element, wherein said heating element is coated with a hydrophobic sorbent adapted to adsorb a substance present in said fluid in said area. The invention further relates to a method for detecting the presence of a substance in a fluid in an area.
摘要:
A mercury reduction system 10A according to the present embodiment is a mercury reduction system that reduces NOx and Hg in flue gas 12 discharged from a boiler 11, and includes a chemical supplying unit 19A that mixes an NH 4 Cl solution 14, an NH 3 solution 15, and an HCl solution 16 in liquid states, and supplies a mixed solution 17 into a flue 18 provided downstream of the boiler 11, a reduction denitration apparatus 20 that includes a denitration catalyst reducing NOx in the flue gas 12 with NH 3 and oxidizing Hg in the presence of HCl, and a wet desulfurization apparatus 25 that reduces Hg oxidized in the reduction denitration apparatus 20 with limestone-gypsum slurry 24.
摘要:
Provide is an exhaust gas treatment apparatus which includes a denitration device (2), a dust collector (4), and a desulfurization device (5) in order, respectively, in a flow path of exhaust gas discharged from a boiler (1), wherein a heavy-metal component removal device (10) is provided in the exhaust gas flow path between the dust collector (4) and the desulfurization device (5). This device (10) is provided with: an absorption tower (45) including a nozzle (47) which sprays acidic absorption liquid on the exhaust gas, a tank (49) which stores liquid which has absorbed a heavy metal, and a pump (50) which supplies the nozzle (47) with the liquid in the tank (49); a neutralizing tank (52) which neutralizes the liquid drawn from the absorption tower (45); and a separator (53) which separates the neutralized liquid into a solid component and a liquid component. Since a small amount of heavy metal can be removed in the absorption tower (45), re-discharging of the heavy metal by the desulfurization device (5) is prevented.
摘要:
Disclosed is a bypass system for use with off gases that have exited a cement kiln utilized in a cement making process. The bypass system is adapted to remove both NOx and volatile components that are present in the off gases while the off gases are in the bypass duct.
摘要:
A compact flue gas cleaning system (20) and a process using the system (20) for removing/reducing plant (10) flue gas pollutants is provided. The compact flue gas cleaning system (20) is a spray dryer absorber and fabric filter integrated system (20) useful for flue gas desulfurization, and like flue gas acid gas removal/reduction, and reaction product separation from the flue gas to produce a cleaned flue gas for environmental release.
摘要:
A method and systems for adsorbing contaminants from a gas stream are provided herein. The method includes flowing the gas stream into a treating vessel and through a moving bed of adsorbents. The method includes flowing the adsorbents out of the treating vessel and into a fluidized bed of a regenerator. The method includes desorbing the contaminants from the adsorbents in the fluidized bed of the regenerator to form regenerated adsorbents. The method further includes cooling the adsorbents and returning the cooled, regenerated adsorbents to the treating vessel.