A method and apparatus for cleaning a contaminated air stream, the method comprising the step of passing the contaminated air stream through a multistage cleaning reactor, wherein at least two stages of the multistage cleaning reactor comprise marine shell material.

A liquid collection plate is arranged in an absorbing column between a spray unit and a reservoir and has a hollow frustoconical shape with a descending slope from an outer periphery thereof toward an axis thereof and having an axial bottom with an opening immersed in the absorption liquid in the reservoir. The liquid collection plate is peripherally divided into and formed by a plurality of divisional plates. Each of the divisional plates has an outer upper end with a hook supported by a latch on an inner surface of the absorbing column and has an inner lower end supported by a brace fixed to a bottom of the reservoir.

Provided are drain tank storing predetermined amount of drain from cooler; alkaline aqueous solution supply unit with aqueous solution adjustment tank receiving and storing part of drain in drain tank in predetermined amount, solid alkaline agent supplier supplying solid alkaline agent to produce alkaline aqueous solution, alkaline concentration controller controlling solid alkaline agent supplier to regulate alkaline concentration of alkaline aqueous solution, and pump supplying alkaline aqueous solution to exhaust gas entry side of cooler; and alkaline supply control unit with impurity sensor downstream of succeeding cooler, drain pH sensor obtaining detected pH of drain in drain tank, and supply controller controlling alkaline supply amount supplied to exhaust gas entry side of cooler based on detected impurity value to make detected pH to set value.

The present disclosure relates to an apparatus, system and method for selectively capturing a carbon-containing gas from an input gas mixture.

There is provided a denitrification apparatus capable of reducing NOx from a combustion facility and preventing evaporation of a reducing liquid in a lance and an injection nozzle in the combustion facility in operation at a low load by adjusting concentration of a reducing agent, thereby achieving complete evaporation of the reducing liquid in an exhaust gas duct. The denitrification apparatus of the present invention includes: a nozzle for spraying a reducing liquid containing a reducing agent for reducing nitrogen oxides in exhaust gas discharged from a combustion facility into the exhaust gas by using a flow of gas; a gas supply unit for supplying the gas to the nozzle; a reducing liquid supply unit for supplying the reducing liquid to the nozzle; and a concentration control unit for adjusting concentration of the reducing agent on the basis of a temperature of the exhaust gas and a supply amount of the reducing liquid by supplying a diluting liquid to the reducing liquid so that the reducing agent is not vaporized in the reducing liquid supply unit.

A diesel exhaust fluid (DEF) doser includes a DEF inlet configured to receive DEF, a DEF outlet configured to spray DEF out of the DEF doser, and an electrochemical cell. The electrochemical cell is located between the DEF inlet and the DEF outlet and couplable to a power source. The electrochemical cell is configured such that, when DEF is flowing from the DEF inlet to the DEF outlet and when the electrochemical cell is coupled to the power source, the electrochemical cell causes an electrolytic reaction in the DEF flowing from the DEF inlet to the DEF outlet to produce gaseous products in the DEF flowing from the DEF inlet to the DEF outlet, and wherein the gaseous products comprise one or more of H.sub.2 or NH.sub.3.

Various methods and apparatus are disclosed that relate to one or more aspects of an abatement system. In various aspects a nozzle assembly of an abatement system includes at least one rotationally adjustable nozzle tubing having at least one nozzle coupled thereto.

The present invention relates to a method for inhibiting the formation of dioxin-like compounds in solid waste incineration flue gases, belonging to the field of cleaning of solid waste incineration flue gases. In accordance with the present invention, when incineration flue gases cool down to 500450 C., the flue gases are introduced into an inhibition reactor where copper chlorides in flue gas particulates mix and react with inhibitors to convert into copper metaphosphate so as to inactivate the copper chlorides which can catalyze the formation of dioxin-like compounds and control dioxin-like compound pollutants in incineration flue gases at the source. Compared with the prior art, the invention can effectively control the main formation ways of dioxin-like compounds in solid waste incineration flue gases by optimizing inhibitors and reaction conditions. The method of the invention does not affect the residual heat utilization of solid waste incineration flue gases, so solid waste incineration has a better resource utilization effect. The ammonium dihydrogen phosphate inhibitor used in the invention has the advantages of high inhibition efficiency, strong operability, low cost and environment protection, providing the technology with good application feasibility.

A process for reducing the amount of CO.sub.2 released into the atmosphere with the exhaust gas stream produced by the combustion of a hydrocarbon fuel in an internal combustion engine (ICE) used to power a vehicle by capturing at least a portion of the CO.sub.2 in a liquid sorbent on board the vehicle, recovering the CO.sub.2 from the sorbent and compressing the CO.sub.2 for temporary storage on board the vehicle, where the process is operated as a semi-closed system in which the liquid sorbent that captures the CO.sub.2 serves as a working fluid and retains the CO.sub.2 during the power generation cycle to produce mechanical energy or work, after which the CO.sub.2 is desorbed for densification and recovery as an essentially pure gas stream and the working fluid is recycled for use in the process.

A vehicle exhaust system includes a mixer having an inlet that receives engine exhaust gases and an outlet to direct swirling engine exhaust gas to a downstream exhaust component. The mixer has a plurality of internal surfaces that come into contact with the engine exhaust gases. At least one of the internal surfaces has a coating comprised of a low-coefficient of friction material.