Various embodiments of a portable carbon dioxide (CO2) absorption device that may remove excess CO2 from a closed environment are disclosed herein. The absorption device is reusable and configured for many environments.

An acid gas removal apparatus includes a reclaimer control device that performs: first supply water control in which at least one of reflux water, steam condensate, and desalinated water is supplied to a reclaimer as first supply water, at non-volatile component removal reclaiming; second supply water control in which at least one of the reflux water, the steam condensate, and the desalinated water is supplied to the reclaimer, and a washing liquid including an acid gas absorbing liquid is supplied to the reclaimer as second supply water, at an initial stage of finish reclaiming; and third supply water control in which supply of the second supply water is stopped and at least one of the reflux water, the steam condensate, and the desalinated water is supplied as the first supply water, at a later stage of the finish reclaiming

A CO.sub.2 recovery device includes: an absorption tower configured to bring an emission gas including CO.sub.2 in contact with an absorbent solution, to remove the CO.sub.2 from the emission gas, and to thereby generate a rich solution corresponding to the absorbent solution having absorbed the CO.sub.2; a regeneration tower configured to regenerate the absorbent solution by removing the CO.sub.2 from the rich solution; a heat exchanger configured to carry out heat exchange between the rich solution and the absorbent solution which is higher in temperature than the rich solution and from which the CO.sub.2 is removed; an absorbent-solution delivery pipe configured to deliver the absorbent solution subjected to the heat exchange in the heat exchanger to the absorption tower; and a bypass pipe configured to deliver the rich solution before the heat exchange to the absorbent-solution delivery pipe.

A system and method for reducing foaming in a wet scrubber system. The system utilizes a device for measuring the volume of entrained gas in the wet scrubbing system, and automatically or semi-automatically adjusting one or more process parameters including: a flow rate of antifoam/defoamer chemistry in said wet scrubber; a flow rate of flue gas; and a flow rate of fresh water. The system allows real-time monitoring and control of the foam in said wet scrubber.

Systems and methods for sequestering emissions from marine vessels are provided. Emissions (either flue gas from exhaust or CO.sub.2 carried on the ship under pressure in gas cylinders or CO.sub.2 obtained during the ships travel via capture is mixed in a reactor with sea water (e.g., via gas exchange through head-space equilibration or bubbling through a diffuser) until a pH of 5.5 to 6.5 is obtained. Systems and reactors pump seawater through a reactor vessel containing a reaction medium (e.g., carbonates and silicates). The reactor produces an effluent that can be expelled into the ocean. The effluent produced from the result of a reaction according to embodiments has approximately twice the concentration of Dissolved Inorganic Carbon (DIC) and Alkalinity (Alk) as the incoming sea water and has an increased Ca.sup.+2 concentration above sea water.

The present invention relates to a process and contactor vessel in which gas and liquid contact occurs to facilitate mass transfer therebetween. In one embodiment, the process includes a fluidised bed including mobile inert primary objects and secondary particles that facilitate turbulent mixing and enhanced gas/liquid surface area in the contactor.

A membrane contactor for separating components from a feed gas stream comprises a housing, a feed gas inlet for receiving the feed gas stream at a first pressure, and a liquid inlet or receiving a stream of liquid at a second pressure, the liquid containing an absorbent for reacting components of the gas stream and a slip gas outlet. The contactor also includes a plurality of fibers with pore channels in contact with the feed gas incoming from the gas inlet on a first side, and in contact with liquid incoming from the liquid inlet on a second side, producing a gas-liquid interface at the pore channels. Liquid is prevented from wetting the pore channels by maintaining the first pressure of the gas stream higher than the liquid stream, and a portion of the gas stream bubbles through as slip gas into the liquid stream due to the elevated pressure.

The purification method comprises: a step for placing the laden gas stream in contact with a saline solution stream, the saline solution stream comprising, before placement in contact, at least 300 g/l of salts, at least part of the quantity of volatile organic compound being extracted from the laden gas stream and absorbed by the saline solution stream, the placement in contact step producing a purified gas stream containing a residual quantity of volatile organic compound and a laden saline solution stream; a step for recovering the volatile organic compound, comprising a sub-step for decanting a laden saline solution stream, leading to the separation of a phase containing the volatile organic compound and of the saline solution.

Methods, systems, and devices for liquid hydrocarbon fuel production, hydrocarbon chemical production, and aerosol capture are provided. For example, a carbon-oxygen-hydrogen (COH) compound may be heated to a temperature of at least 800 degrees Celsius such that the COH compound reacts through a non-oxidation reaction to generate at least a hydrocarbon compound that may be at least a component of a liquid hydrocarbon fuel or a hydrocarbon chemical. The liquid hydrocarbon fuel may be a liquid when at a temperature of 20 degrees Celsius. The COH compound may include biomass. In some cases, the hydrocarbon compound produced through the non-oxidation reaction includes a hydrocarbon aerosol form as the hydrocarbon compound at least as it is produced or cools. Some embodiments include aerosol capture methods, systems, and devices, which may include passing a hydrocarbon aerosol form through a material in a liquid phase in order to gather the aerosol material.

A method of managing foam in a gas processing system includes flowing a gas processing solution through a processing line and flowing an antifoaming agent through a treatment line into a mixed fluid line to form a fluid mixture, determining a foam level of the fluid mixture at a foam controller disposed along the mixed fluid line, automatically controlling a valve disposed along the treatment line to control a flow rate at which the antifoaming agent is flowed into the mixed fluid line to achieve a target dose of the antifoaming agent to be mixed with the gas processing solution in the mixed fluid line based on the foam level determined at the foam controller, and flowing the fluid mixture containing the target dose of the antifoaming agent into a system component to prevent an amount of the foam in the gas processing system from exceeding a threshold amount.