A process for the treatment of waste water, spent air, and hydrocarbon containing liquid and gaseous streams in the cumene/phenol complex is described. Various effluent streams are combined in appropriate collection vessels, including a spent air knockout drum, a hydrocarbon buffer vessel, a fuel gas knockout drum, a phenolic water vessel, and a non-phenolic water vessel. Streams from these vessels are sent to a thermal oxidation system.

A heat exchanger includes: a cooler/heater, an evaporator and a condensate separator, provided with inlet lines and outlet lines through which flows develop in countercurrent to each other for obtaining through the cooler/heater an incoming flow of hot and humid air and an outgoing flow of cooled cold air. The cooler/heater, the evaporator and the condensate separator are independent units from each other joined by a connection for defining a single-block body on whose outer surface inlet lines and outlet lines are provided. A first conduit places in communication the outlet line with the second inlet line; a second conduit places in communication the first outlet line with the first inlet line; and a third conduit places in communication the first outlet line with the first inlet line. The conduits project from the outer surface that delimits the single-block body.

An osmotic transport apparatus includes a heat conducting chamber having an inner wall, a heat absorption end and a heat dissipation end, an osmotic membrane extending substantially longitudinally along an inner wall of the heat conducting chamber from the heat absorption end to the heat dissipation end, a liquid salt solution disposed in the osmotic membrane, and an inner vapor cavity so that when heat is applied to the heat absorption end, vapor is expelled from the osmotic membrane at the heat absorption end, is condensed on the osmotic membrane at the heat dissipation end, and is drawn into the osmotic membrane at the heat dissipation end for passive pumping transport back to the heat absorption end as more condensate is drawn through the osmotic membrane.

A process for treating effluent streams in a renewable transportation fuel production process is described. One or more of the sour water stream and an acid gas stream are treated directly in thermal oxidation section. The process allows the elimination or size reduction of a sour water stripper unit, waste water treatment plant, and sulfur recovery unit.

Provided is a carbon dioxide capturing apparatus comprising: a reaction tower including a carbon dioxide adsorption unit or a carbon dioxide absorption unit which adsorbs or absorbs carbon dioxide from exhaust gas; desorption tower connected to the reaction tower and including an adsorbent heating unit for heating an adsorbent circulating inside or an absorbent heating unit for heating an absorbent circulating inside; an adsorbent or absorbent which circulates in the reaction tower and the desorption tower and alternately adsorbs and desorbs carbon dioxide or alternately absorbs and desorbs carbon dioxide; and a heat exchange unit which desorbs carbon dioxide from the adsorbent on which carbon dioxide is adsorbed or the absorbent in which carbon dioxide is absorbed, through heat exchange between the adsorbent on which carbon dioxide is adsorbed and the heated adsorbent, or between the absorbent in which carbon dioxide is absorbed and the heated absorbent, wherein the adsorbent on which carbon dioxide is adsorbed and the heated adsorbent, or the absorbent in which carbon dioxide is absorbed and the heated absorbent are transferred in a co-current flow manner.

Methods of sequestering carbon dioxide (CO.sub.2) are provided. Aspects of the methods include contacting an aqueous capture ammonia with a gaseous source of CO.sub.2 under conditions sufficient to produce an aqueous ammonium carbonate. The aqueous ammonium carbonate is then combined with a cation source under conditions sufficient to produce a solid CO.sub.2 sequestering carbonate and an aqueous ammonium salt. The aqueous capture ammonia is then regenerated from the from the aqueous ammonium salt. Also provided are systems configured for carrying out the methods.

A heat recovery steam generator includes a gas inlet for receiving a flow of exhaust gas from a gas turbine, a gas outlet opposite the gas inlet and configured to transport the flow of exhaust gas to atmosphere, and a sorbent injection device intermediate the gas inlet and the gas outlet, the sorbent injection device including at least one injection port configured to inject a sorbent into the flow of exhaust gas. The sorbent is configured to react with an acid gas within the flow of exhaust gas to neutralize the acid gas and inhibit the formation of salt deposits.

A reactor apparatus and method for removing and/or reducing NOx, CO, carbon particulates and hydrocarbons from exhaust gases produced by industrial processes includes a reactor including an inlet plenum, a reaction chamber, an outlet plenum, and a heat exchanger wherein gases exiting the reaction chamber heat gases entering the reaction chamber. EGR is drawn through a cooling heat exchanger with an injection blower and is delivered through control valves to the reaction chamber, the inlet plenum and to an add fuel mixing chamber whereby mixed fuel and EGR is delivered to the reaction chamber. A feedback controller controls the flow valves responsive to the temperatures in the reaction chamber entrance and the outlet plenum.

The present invention provides a method including: a gas absorption step of bringing exhaust gas into contact with an aqueous solution containing alkaline carbonate, so that carbon dioxide gas in the exhaust gas is allowed to react therewith, thereby obtaining an aqueous solution containing alkaline bicarbonate; a gas recovery step of recovering a gas containing nitrogen gas and oxygen gas obtained as a result of the gas absorption step; a decomposition step of decomposing at least a part of the alkaline bicarbonate obtained in the gas absorption step into the alkaline carbonate and the carbon dioxide gas; a circulation step of circulating at least a part of the alkaline carbonate obtained in the decomposition step to the gas absorption step; and a carbon dioxide gas recovery step of bringing a gas containing the carbon dioxide gas obtained as a result of the decomposition step into contact with an aqueous solution, thereby recovering the carbon dioxide gas obtained in the decomposition step.

An exhaust gas treatment device includes an exhaust gas line through which a combustion exhaust gas discharged from a power generation facility flows, a waste heat recovery boiler recovering waste heat of the combustion exhaust gas, a branch exhaust gas line provided to be connected between a front stage and a downstream stage of the waste heat recovery boiler on a main exhaust gas line, a nitrogen oxide removal unit removing nitrogen oxide in an integrated combustion exhaust gas into which a combustion exhaust gas flowing through the main exhaust gas line and a combustion exhaust gas flowing through the branch exhaust gas line are integrated, an integrated waste heat recovery boiler recovering waste heat of the integrated combustion exhaust gas from which nitrogen oxide has been removed, and a CO.sub.2 recovery unit recovering CO.sub.2 in the integrated combustion exhaust gas.