摘要:
Provided are drain tank storing predetermined amount of drain from cooler; alkaline aqueous solution supply unit with aqueous solution adjustment tank receiving and storing part of drain in drain tank in predetermined amount, solid alkaline agent supplier supplying solid alkaline agent to produce alkaline aqueous solution, alkaline concentration controller controlling solid alkaline agent supplier to regulate alkaline concentration of alkaline aqueous solution, and pump supplying alkaline aqueous solution to exhaust gas entry side of cooler; and alkaline supply control unit with impurity sensor downstream of succeeding cooler, drain pH sensor obtaining detected pH of drain in drain tank, and supply controller controlling alkaline supply amount supplied to exhaust gas entry side of cooler based on detected impurity value to make detected pH to set value.
摘要:
A method for reducing pollution in a cement kiln environment and a system for treating cement kiln exhaust gas are provided. The method includes the steps of: treating a cement kiln exhaust gas stream with a treating fluid, such as a water soluble alkaline-earth metal sulfide. In one application, the treating fluid is injected by spraying droplets into the cement kiln exhaust gas stream. A system for treating cement kiln exhaust gas includes a reagent containing a water soluble alkaline-earth metal sulfide in water, and a nozzle to spray the reagent into the cement kiln exhaust gas stream.
摘要:
A process is disclosed for reversibly absorbing carbon dioxide to an alkali metal or earth alkaline absorbent. For absorption the absorbent is contacted with a first gas composition. For desorption the absorbent is contacted with a second gas composition. The moisture contents of the first and second gas compositions are controlled so that during the absorption step the absorbent is converted to a bicarbonate, and during the desorption step the absorbent is converted to a carbonate hydrate.Compared to prior art processes the process of the invention requires less energy input. The process of the invention is particularly suitable for producing a carbon dioxide enriched gas for accelerating plant growth in a greenhouse.
摘要:
A carbon dioxide composite getter comprising a CO2-permeable envelope containing powders of two active materials and sealed systems employing the carbon dioxide composite getter.
摘要:
A waste gas is contacted with a mercury removal agent to remove mercury and a flue gas conditioning agent to alter a resistivity and/or cohesivity of particulates. The flue gas conditioning agent can be substantially free of SO3 and/or comprise more than about 25 wt. % SO3, and/or the mercury removal agent can be substantially unaffected by the flue gas conditioning agent. An amount of mercury removed from the waste gas in the presence of the flue gas conditioning agent can be the same or more than that removed from the waste gas in the absence of the flue gas conditioning agent. An amount of the acid gas removed, by an acid gas removal agent, from the waste gas in the presence of the flue gas conditioning agent can be the same or more than that removed from the waste gas in the absence of the flue gas conditioning agent.
摘要:
An apparatus for removing contaminants from a gas stream includes a reaction chamber for receiving the gas stream; a gas-liquid contact assembly disposed in the reaction chamber; a sump disposed in the reaction chamber beneath the gas-liquid contact assembly, the sump containing a liquid scrubbing agent; a first inlet in communication with the sump for providing a reactive species to the liquid scrubbing agent in the sump for producing an oxidizing solution; a second inlet in communication with the reaction chamber for providing the gas stream to the reaction chamber; and a feed line having a first end in communication with the sump and a second end in communication with the reaction chamber above the gas-liquid contact assembly for dispensing the oxidizing solution to contact the gas-liquid contact assembly.
摘要:
The present invention relates to a carbon dioxide capture apparatus having a temperature swing adsorption mode for selective separation of carbon dioxide from flue gases. The carbon dioxide capture apparatus comprises: a carbon dioxide sorption column including a carbon dioxide adsorption unit in which adsorption of carbon dioxide from flue gases occurs; a carbon dioxide desorption column connected to the carbon dioxide sorption column and including a carbon dioxide desorption unit in which desorption of the adsorbed carbon dioxide occurs; a carbon dioxide absorbent repeatedly adsorbing and desorbing carbon dioxide while circulating through the carbon dioxide sorption column and the carbon dioxide desorption column; and a heat exchange unit in which heat exchange occurs between the absorbent after carbon dioxide adsorption and the absorbent after carbon dioxide desorption.
摘要:
A method for leaching of minerals and sequestration of CO2 is disclosed, wherein the method comprises forming a rock pile; injecting exhaust gas containing CO2 in the lower part of the rock pile; spraying leaching liquid on top of the rock pile; collecting enriched leaching liquid from a lower part of the rock pile; precipitating mineral carbonates from the enriched leaching liquid, or further extracting dissolved elements or compounds.
摘要:
A method is illustrated and described for reducing unwanted substances by injecting a reactant into a flue gas of a steam generator. In order that the reactant can also be used in larger steam generators and/or combustion chambers, a method is proposed, in which the reactant is injected into the combustion chamber of the steam generator via a reactant opening of a multi-component nozzle, in which an enveloping medium is injected into the combustion chamber through at least one enveloping medium opening arranged outside the reactant opening, and in which the enveloping medium at least partly envelops the reactant in the combustion chamber and in this way at least partly shields the reactant from the flue gas.
摘要:
Embodiments of the present invention relate to a system and method for efficient removal of sulfur oxides (SOx), nitrogen oxides (NOx) and particulate matter (PM) contained in an exhaust gas generated from fuel combustion and efficient treatment of water containing microorganisms (e.g. ballast water).