A method for treating a flue gas that includes determining a sulfur trioxide concentration within the flue gas and determining an injection rate for a sulfur trioxide sorbent based upon the sulfur trioxide concentration. Also, a method for treating a flue gas that includes determining a sulfuric acid dew point for the flue gas and determining a coolant injection rate for a coolant to be injected into the flue gas to cause the flue gas to have a temperature of from about 20 to about 30 F. above the sulfuric acid dew point.

An example rotational flow and sink flow coupling integrated system may include a spray layer, a slurry pool, a circulating pump, a rotational flow and sink flow coupling device, and a tube bundle-type dedusting and demisting device. The rotational flow and sink flow coupling device, which includes a plurality of rotational flow and sink flow coupling units and supporting beams for supporting the rotational flow and sink flow coupling device which are located therebelow, is mounted above the slurry pool and below the spray layer. The tube bundle-type dedusting and demisting device is arranged on top of a tower body; each rotational flow and sink flow coupling unit includes a rotational flow cylinder, a rotational flow rotor, and a flow guiding device. Both the components described in this paragraph and any other additional components may be implemented in various ways according to the present disclosure.

Provided are processes of removing or sequestering a basic or an acid gas from a sample by contacting the sample with a filtration media that includes a porous zirconium hydroxide impregnated with a transition metal reactant. The resulting filtration media has the ability to remove or sequester both acid and basic gases, is stable, and highly functional so as to be useful in protective equipment or other filtration systems.

The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for: (i) reducing the levels of one or more gas phase selenium compounds and/or one or more other RCRA metals, or RCRA metal compounds (regardless of whether such other RCRA metals or RCRA metal compounds are in the gas phase or some other phase); (ii) capturing, sequestering and/or controlling one or more gas phase selenium compound and/or one or more other RCRA metals, or RCRA metal compounds (regardless of whether such other RCRA metals or RCRA metal compounds are in the gas phase or some other phase) in a flue gas stream and/or in one or more pieces of emission control technology; and/or (iii) capturing, sequestering and/or controlling one or more gas phase selenium compound and/or one or more other RCRA metals, or RCRA metal compounds (regardless of whether such other RCRA metals or RCRA metal compounds are in the gas phase or some other phase) in a flue gas stream prior to desulfurization and/or in one or more pieces of emission control technology prior to one or more desulfurization units,

A system and a method for reducing nitrogen dioxide (NO.sub.2) content of a flue gas are provided. The system comprises a wash column that is designed to receive a flue gas containing nitrogen dioxide and treat the flue gas with a first water stream. The first water stream contains a thiosulfate salt reactant. The thiosulfate salt reactant reacts with the nitrogen dioxide to remove the nitrogen dioxide from the flue gas. The wash column can provide a treated flue gas that is substantially free of nitrogen dioxide, or a treated flue gas that contains less nitrogen dioxide than untreated flue gas.

A system for cleaning flue gas, the system including a particulate removal system; an additive injector positioned downstream of the particulate removal system, for injecting an additive into the flue gas; a powdered sorbent injector positioned downstream of the additive injector, for injecting powdered sorbents, wherein no powdered sorbent injectors are positioned upstream of the particulate removal system; and a flue gas desulfurization system positioned downstream from the powdered sorbent injector, wherein no other processing apparatus is located between the powdered sorbent injector and the flue gas desulfurization system.

A method for treating a flue gas that includes determining a sulfur trioxide concentration within the flue gas and determining an injection rate for a sulfur trioxide sorbent based upon the sulfur trioxide concentration. Also, a method for treating a flue gas that includes determining a sulfuric acid dew point for the flue gas and determining a coolant injection rate for a coolant to be injected into the flue gas to cause the flue gas to have a temperature of from about 20 to about 30 F. above the sulfuric acid dew point.

An example rotational flow and sink flow coupling integrated system may include a spray layer, a slurry pool, a circulating pump, a rotational flow and sink flow coupling device, and a tube bundle-type dedusting and demisting device. The rotational flow and sink flow coupling device, which includes a plurality of rotational flow and sink flow coupling units and supporting beams for supporting the rotational flow and sink flow coupling device which are located therebelow, is mounted above the slurry pool and below the spray layer. The tube bundle-type dedusting and demisting device is arranged on top of a tower body; each rotational flow and sink flow coupling unit includes a rotational flow cylinder, a rotational flow rotor, and a flow guiding device. Both the components described in this paragraph and any other additional components may be implemented in various ways according to the present disclosure.

The present invention relates to an apparatus for absorbing and mineralizing carbon dioxide comprising a reactor and a three-phase separator, in which said reactor comprises a tower body and a draft tube disposed inside the tower body, a liquid inlet pipe and a gas intake pipe being disposed on the tower body, the outlet ends of the liquid inlet pipe and the gas intake pipe both being located inside the draft tube; and the three-phase separator is disposed at the upper end of the reactor, and a method therefor. The arrangement of draft tube inside the reactor of the present invention, enhances gas-liquid-solid mixing state because of the flow with airlift loop flow inside the reactor, accelerates the dissolution rate of solid alkali solute and thus may increase absorption reaction rate and absorptivity; the integration of three-phase separator in the reaction apparatus may isolate carbonate by settling while reacting, reduce solid content of the solution, while reducing the circulation of water between absorption and separation units, improve process performance, reduce process energy consumption; carbonate particles generated can be controlled better, thus a higher settling efficiency can be obtained.

Disclosed herein is a field replaceable multifunction cartridge for the conversion of composite high molecular weight hydrocarbon vapors, extracted from homogenous or heterogeneous, segregated or unsegregated, wet or dry, unclean miscellaneous multi-feed waste input, to produce low molecular weight fractions of industriously combustible fuel products through catalytic cracking. The multifunction cartridge system is constructed in a modular fashion is capable of performing the catalytic, cleaning and scrubbing functions through the temperature range ranging from ambient to 500 C., owing to the high mechanical strength, low coefficient of expansion, resistance to thermal fatigue etc.