There is provided an apparatus and for removing pollutants from a gas. The apparatus comprises a gas flow path along which gas passes from an inlet to an outlet in use; and a cooling device on the gas flow path and orientated so as to direct the gas flow path upward towards the outlet. The apparatus is arranged in use to provide water and gaseous reagent to gas upstream of the cooling device in quantities based on one or more properties of the gas and a cooling capability of the cooling device so as to cause the reagent to react with one or more constituents of the gas to produce a reaction product and to cause the gas to reach its saturation point when passing through the cooling device thereby causing water in the gas to capture the reaction product, condense and pass out of the gas.

An oxidizing composition for removing hydrogen sulfide (H.sub.2S) from a gaseous or liquid stream includes mixture products of water, sodium hypochlorite, a chelating agent, and a transition metal compound. The chelating agent can be etidronic acid; the transition metal compound can be an iron (III) compound, such as ferric sulfate. The oxidizing composition is formed by (i) combining water, chelating agent, and transition metal compound to form an activator composition and (ii) mixing the activator composition with a sodium hypochlorite solution to adjust the pH, such as for a particular use. Some embodiments include various apparatuses and methods for treating different treatment sites with the oxidizing compositions disclosed herein. Examples of suitable treatment sites include, without limitation, natural gas pipelines, bubble towers, oil wells, gas wells, sewer wet wells, air scrubbers, saltwater disposal pipelines, and saltwater disposal wells.

A device and methods for air disinfection of microorganisms and biological agents by the method of their inactivation by electrostatic fields and filtering by the method of electrostatic precipitation is disclosed. The method comprises the steps of: creating a flow (A) of air to be disinfected; subjecting said flow to constant with electrostatic fields alternating in direction of intensity vector, said electrostatic fields being sequentially arranged along the flow, and created by transversely spaced air permeable electrodes (1); and filtering the treated flow with an electrostatic filter. Electrostatic field concentrators in the form of projections (3) are located on the surface of the electrodes (1), in particular nanoscale projections. This provides a fast, effective, and reliable cleaning of air from any kind of microorganisms and viruses, as well as the aerosol particles having size of 0.08 m.

A smart enclosure protection system for packages containing one or more metals comprises various sensors such as relative humidity, temperature of the metal, temperature within the package, a volatile corrosion inhibitor sensor, as well as a relative humidity sensor. Upon a computer receiving a signal from one or more of the noted sensors that the sensing item is either above or below a predetermined value, it will send a signal to one or more dispensers such as a dehumidifying compound dispenser, a volatile corrosion inhibitor compound dispenser, a soluble corrosion inhibitor compound dispenser, or a chemical fluid absorber or scavenger dispenser to dispense one or more such dispensing compounds that abates or removes an actual or a potential corrosion inhibiting situation.

The invention in its various embodiments is directed to methods and equipment for generating an activated sorbent from a sorbent precursor with the addition of certain chemicals that enhance the effectiveness of the activated sorbent. The invention in its various embodiments is also directed to the methods and equipment for generating some of the chemicals that are added to the raw carbonaceous material or activated sorbent to enhance its effectiveness. The invention in its various embodiments is also directed to methods and equipment for generating certain chemicals that can be added to a gas stream to convert a given gaseous pollutant to a form that is more easily removed from the gas stream.

The invention relates to methods for air disinfection of microorganisms and biological agents by the method of their inactivation by electrostatic fields and filtering by the method of electrostatic precipitation. The method comprises the steps of creating a flow (A) of air to be disinfected; subjecting said flow to constant with electrostatic fields alternating in direction of intensity vector, said electrostatic fields being sequentially arranged along the flow, and created by transversely spaced air permeable electrodes (1); and filtering the treated flow with an electrostatic filter. Electrostatic field concentrators in the form of projections (3) are located on the surface of the electrodes (1), in particular nanoscale projections, and the intensity of each of the alternating electrostatic fields between the electrodes is selected in accordance with the condition of electroporation of microorganism cells or their inactivation. A device for implementing this method is also claimed. The use of the invention provides a fast, effective, and reliable cleaning of air from any kind of microorganisms and viruses, as well as the aerosol particles having size of 0.08 m. The invention also provides improved hygienic safety due to microorganism inactivation before the filtration step, and because of the absence of dangerous concentrations of ozone and other harmful substances.

The invention in its various embodiments is directed to methods and equipment for generating an activated sorbent from a sorbent precursor with the addition of certain chemicals that enhance the effectiveness of the activated sorbent. The invention in its various embodiments is also directed to the methods and equipment for generating some of the chemicals that are added to the raw carbonaceous material or activated sorbent to enhance its effectiveness. The invention in its various embodiments is also directed to methods and equipment for generating certain chemicals that can be added to a gas stream to convert a given gaseous pollutant to a form that is more easily removed from the gas stream.

A mixing system configured to mix a process gas into a mainstream to be processed, the mixing system comprises a distribution channel, an injection unit and a static mixing unit; the injection unit comprises a manifold and a main injection ring, the manifold is adapted to receive said fluid or gas to be injected into the mainstream via said main injection ring, said main injection ring has a circular or annular structure and is provided with a plurality of injection orifices for introducing said process gas into the mainstream.

A gas treatment apparatus for treating nitrogen oxide exhaust using ozone includes an ozone generator; a mass flow controller, controlling the gas flow amount flowing to the ozone generator; a reaction chamber; and a neutralizing chamber, provided with a third gas inlet and a fourth gas outlet. The reaction chamber includes an ozone inlet located on the side of the reaction chamber, an ozone sprayer installed inside the reaction chamber and connected to the ozone inlet, an exhaust gas inlet located on the top surface of the reaction chamber away from the center, an exhaust gas inlet tube and a third gas outlet. The exhaust gas inlet tube is provided with a connecting end and an inclined end. The inclined end and the exhaust gas inlet are connected to the outer side of the top of the reaction chamber.

Apparatus and associated methods relate to a passive automatic injector reactor system (PAIRS). In an illustrative example, an energy storage enclosure may contain energy storage modules (e.g., batteries) releasing target gas(es) (e.g., toxic, flammable). The PAIRS may, for example, include an injector in fluid communication with the enclosure. The injector may, for example, passively direct target gases released from the enclosure to a mixing area where supplemental gas(es) are entrained with the target gases to create a target gas air mixture that is directed to a reactor. The reactor may, for example, utilize one more chemical, physical, and/or physiochemical processes to convert the target air gas mixture into a processed gas before release. Various embodiments may advantageously prevent fire, explosion, and/or the release of toxic gas from batteries.