Systems and methods for selectively removing hydrogen sulfide from a feed gas stream. The systems include an absorber-heat exchanger (ABHEX) assembly configured to exchange thermal energy between a mixed stream and a thermal management fluid stream. The ABHEX assembly defines a mixed stream volume and a thermal management fluid stream volume. The ABHEX assembly includes an isolation structure that maintains fluid separation between the mixed stream and the thermal management fluid stream and facilitates thermal communication between the mixed stream and the thermal management fluid stream. The ABHEX assembly is configured to receive and to mix the feed gas stream and a lean solvent stream to generate the mixed stream, to separate the mixed stream into a product gas stream and a rich solvent stream, and to cool the mixed stream. The methods include methods of operating the systems.

Disclosed is a process for regenerating a hybrid solvent used to remove contaminants from a fluid stream and to provide an improved yield of purified fluid. Said process comprises at least one purification unit (12) and at least one regeneration unit (40) wherein condensed water (72) from the regeneration unit is combined with the regenerated lean hybrid solvent (55) prior to reuse in the purification unit and none of the condensed water is recycled into the regeneration unit.

Disclosed herein is a method of regenerating a sorbent of gas in a capture process of said gas, wherein the capture process comprises recirculating the sorbent between a gas capturing system and regenerating reactor system, the method comprising the regenerating reactor system performing the steps of: receiving a solid sorbent to be regenerated, wherein the sorbent is a sorbent of carbon dioxide gas; generating heat by combusting a fuel with an oxidising agent in the presence of a catalyst; regenerating the sorbent by using the generated heat to indirectly heat the sorbent so that the sorbent releases carbon dioxide gas; outputting the regenerated sorbent; and outputting the released carbon dioxide gas. Advantages of the gas capture system include a higher efficiency than known techniques.

A system for removing carbon dioxide from a carbon dioxide laden gas mixture, the system comprising two groups of carbon dioxide removal structures, each removal structure within each group comprising a porous solid mass substrate supported on the structure; and a sorbent that is capable of adsorbing or binding to carbon dioxide, to remove carbon dioxide from a gas mixture, the sorbent being supported upon the surfaces of the porous mass substrate solid; an endless loop support for each of the groups of the removal structures, the endless loop support being so arranged as to move the support structures of each group along a closed curve while being exposed to a stream of the gas mixture; and a sealable regeneration box at one location along each of the endless loop supports, in which, when a porous solid mass substrate is sealed in place therein, carbon dioxide adsorbed upon the sorbent is stripped from the sorbent and the sorbent regenerated; each removal structural supporting a porous substrate in a position to be exposed to a flow of carbon dioxide laden gas mixture so as to allow for the removal of CO.sub.2 from the gas mixture; the number of removal structures to the number of regeneration boxes being directly determined by the ratio of the time to adsorb CO.sub.2, from a base level to desired level on the sorbent, to the time to strip the CO.sub.2 from the desired level back to the base level.

Devices, systems, and methods for carbon capture optimization in industrial facilities are disclosed herein. An example carbon capture process involves cooling a flue gas stream using at least one gas-to-air heat exchanger disposed upstream of a carbon dioxide (CO2) absorber. Another example carbon capture process involves heating a heat medium for solvent regeneration and CO2 stripping using a fired heater and/or using at least one waste heat recovery unit.

Process for reducing the content of NOx and N2O from an input tail gas of a nitric acid process, said input tail gas having a temperature lower than 400 C., the process comprising an abatement stage at least including a deN2O stage and deNOx stage and providing a conditioned tail gas having a temperature greater than the input tail gas, wherein, prior to submission to said abatement stage, said input tail gas is pre-heated to a temperature of at least 400 C. by indirect heat exchange with at least a portion of said conditioned gas.

The invention relates to a method and to a device for performing a process (P) having at least one heat-consuming process step (F). A first fluid (2), which arises in the process and contains acid gases and water vapor, is cooled indirectly against a second fluid (7), an acidic condensate thus being formed. The invention is characterized in that the first fluid (2) is cooled in at least two successive steps (E1, E2), between which heat for use in the heat-consuming process step (V) is indirectly drawn from the second fluid (10).

A ship with a flue gas carbon dioxide capture and storage plant has a main engine such as a slow running diesel engine providing flue gas. The flue gas is led via a flue gas heat exchanger with a thermal fluid exit to a re-boiler and arranged for cooling said flue gas. Further cooled flue gas is led into a turbine compressor compressing it up to a compressed flue gas. A combustion chamber is provided with a fuel feed and a pre-mix gas burner for afterburning said compressed flue gas which also burns remaining methane from the diesel engine, resulting in hot afterburned compressed flue gas enriched in CO.sub.2. The CO2-absorber (20) leading said CO.sub.2-enriched absorber solution to a CO.sub.2-stripper (21), operating at e.g. 1 Bar and exporting CO2 to a CO2-compressor (26) to a CO.sub.2-export line (28) to onboard CO.sub.2 pressure tanks.

Devices, systems, and methods for carbon capture optimization in industrial facilities are disclosed herein. An example carbon capture process involves cooling a flue gas stream using at least one gas-to-air heat exchanger disposed upstream of a carbon dioxide (CO2) absorber. Another example carbon capture process involves heating a heat medium for solvent regeneration and CO2 stripping using a fired heater and/or using at least one waste heat recovery unit.

The invention relates to a system or method for capturing a molecule of interest contained in an industrial gaseous effluent, enabling the implementation of a regeneration step (120) in at least one regeneration section (30), a condensation step (150) in at least one condensation section (40), and wherein a step (130) of compressing the gas mixture comprising a solvent and the molecule of interest upstream of the condensation section (40) so that the pressure in the at least one condensation section (40) is at least three times higher than the pressure in the at least one regeneration section (30). The method further comprises a heat transfer step (140) between the at least one condensation section (40) and the at least one regeneration section (30).