Abstract: A method of reducing the hydrogen sulfide content of an influent gas stream comprising oxygenated gas and hydrogen sulfide. An aqueous stream including an available metal chelant and the influent gas stream are contacted using an eductor. The eductor releases an eductor effluent stream including a mixture of sulfur, a first treated gas including a lower concentration of hydrogen sulfide than the influent gas stream, a first unavailable metal chelant, the available metal chelant. The eductor effluent stream is received in a common vessel wherein a plurality of activities may be performed. The plurality of activities includes generating a second treated gas by reducing a metal of the available metal chelant and producing the aqueous stream of the available metal chelant by oxidizing the first or second unavailable metal chelant using the oxygenated gas.

Abstract: A gas treatment system configured to purify an influent gas stream including a hydrocarbon gas and a hydrogen sulfide gas comprises a reduction unit and an oxidation unit. The reduction unit includes at least one eductor configured to contact the influent gas stream with a primary stream including aqueous reducing reagent and release a purified hydrocarbon gas stream and a contacted primary stream including elemental sulfur. The oxidation unit includes at least one eductor configured to contact an oxidizing agent stream and a secondary stream including the primary stream and contacted primary stream and output a regenerated redox reagent stream.

Abstract: A gas treatment system configured to purify an influent gas stream including a hydrocarbon gas and a hydrogen sulfide gas comprises a reduction unit and an oxidation unit. The reduction unit includes at least one eductor configured to contact the influent gas stream with a primary stream including aqueous reducing reagent and release a purified hydrocarbon gas stream and a contacted primary stream including elemental sulfur. The oxidation unit includes at least one eductor configured to contact an oxidizing agent stream and a secondary stream including the primary stream and contacted primary stream and output a regenerated redox reagent stream.

Abstract: An integrated amine and redox gas treatment system is configured to treat an influent hydrocarbon containing stream. The system includes a reduction oxidation unit connected directly downstream of an amine unit. The amine unit is configured to separate the influent fluid stream into a first amine effluent stream including hydrocarbons and a second amine effluent stream including a connection pressure and comprising CO2. The reduction oxidation unit is configured to receive the second amine effluent stream from the amine unit and operate at the connection pressure while releasing a reduction oxidation effluent stream including purified CO2. The connection pressure includes a single pressure or a plurality of pressures at which both the amine unit and the reduction oxidation unit are configured to operate.

Abstract: A dynamically adjustable rate sulfur recovery process continuously calculates and adjusts sour gas stream operating pressure and/or flow rate to maximize sweet gas output, thereby improving efficiency. A corresponding desulfurization system may include a fixed-sized pressure vessel, a flow control valve that controls the rate of flow of a sour gas stream into the pressure vessel, a sensor that measures sulfur concentration in the sour gas stream, a reagent tank, an oxidizer tank, and a phase separator that separates sweet gas as a gaseous phase after hydrogen sulfide in the sour gas stream in the pressure vessel is converted to elemental sulfur, sulfur species, or both by contact with reagent from the reagent tank and oxidizer from the oxidizer tank. A PLC (programmable logic controller) continuously calculates updated flow rates based on sulfur concentration measurements from the sensor to achieve maximum sweet gas production.

Abstract: An integrated amine and redox gas treatment system is configured to treat an influent hydrocarbon containing stream. The system includes a reduction oxidation unit connected directly downstream of an amine unit. The amine unit is configured to separate the influent fluid stream into a first amine effluent stream including hydrocarbons and a second amine effluent stream including a connection pressure and comprising CO2. The reduction oxidation unit is configured to receive the second amine effluent stream from the amine unit and operate at the connection pressure while releasing a reduction oxidation effluent stream including purified CO2 The connection pressure includes a single pressure or a plurality of pressures at which both the amine unit and the reduction oxidation unit are configured to operate.

Abstract: A small-scale system for removing hydrogen sulfide and ammonia from a wastewater stream includes a sulfur recovery stage, an ammonia recovery stage, and a separation stage. Sulfur species are oxidized and converted into solid sulfur and solid sulfur species by exposure to a combination of chelated iron and oxidizer. The solid sulfur and solid sulfur species are removed by filtration to yield a sulfur-free stream to which oxidizer is added and electromagnetic radiation is inputted to break the N—H bonds of the ammonia into amine radicals. The combination of additional oxidizer and electromagnetic radiation promotes the creation of water and nitrogen gas.

Abstract: A dynamically adjustable rate sulfur recovery process continuously calculates and adjusts sour gas stream operating pressure and/or flow rate to maximize sweet gas output, thereby improving efficiency. A corresponding desulfurization system may include a fixed-sized pressure vessel, a flow control valve that controls the rate of flow of a sour gas stream into the pressure vessel, a sensor that measures sulfur concentration in the sour gas stream, a reagent tank, an oxidizer tank, and a phase separator that separates sweet gas as a gaseous phase after hydrogen sulfide in the sour gas stream in the pressure vessel is converted to elemental sulfur, sulfur species, or both by contact with reagent from the reagent tank and oxidizer from the oxidizer tank. A PLC (programmable logic controller) continuously calculates updated flow rates based on sulfur concentration measurements from the sensor to achieve maximum sweet gas production.