The present application provides a method of treating flue gas in a duct with an injection system, the flue gas comprising an acid gas and/or one or more metal components, the injection system comprising at least one injection nozzle in communication with an air supply and a supply of sorbent; wherein the method comprises supplying air and sorbent through the nozzle to the duct such that the penetration of the sorbent into the duct is represented by the formula: Y=(D.sub.na(p.sub.nV.sub.n.sup.2/p.sub.fV.sub.f.sup.2).sup.0.5(x/D.sub.n).sup.0.33)/D.sub.f where Y is the fraction of duct penetration depth of the sorbent when the duct length is x, D.sub.n is the diameter of the nozzle, D.sub.f is the depth of the duct, p.sub.n and p.sub.f are the densities of the air supply and flue gas, respectively V.sub.n and V.sub.f are the velocities of the air exiting the nozzle and the flue gas, respectively, and where a is between 0.3 and 1.0 and where Y is between 0.3 and 0.8.

A method includes injecting a feed stream including a hydrogen halide and water into a vapor liquid separator. The feed stream has a liquid phase and a vapor phase. The method further includes separating the liquid phase and the vapor phase in the vapor liquid separator to form condensate and vapor, and discharging the condensate from the vapor liquid separator in a liquid stream. The method also includes discharging the vapor from the vapor liquid separator in a vapor stream.

Processes and facilities for recovering and purifying a pyrolysis gas formed by pyrolyzing waste plastic are provided. The purification process may comprise one or more treatment processes, including a caustic scrubber process, which may be included in a cracker facility or separate from the cracker facility. The resulting gas effluent stream from the caustic scrubber is particularly useful for recovering recycled chemical products and co-products from a downstream cryogenic separation process.

A system for regulating an amount of fresh lime slurry introduced to a spray dry absorber. The control system includes a controller configured to receive input from a continuous emissions monitoring system (CEMS), a valve in communication with the controller and a spray dry absorber suction pump, the valve adapted to regulate an amount of fresh lime slurry provided to the spray dry absorber suction pump and a valve in communication with the controller and a pre-mix tank, the valve adapted to regulate an amount of fresh lime slurry provided to the pre-mix tank.

The present invention relates to a process for producing dimethyl ether (DME) and hydrogen (H.sub.2) from methane, comprising the steps of: a) providing a gaseous feed stream comprising methane; b) reacting said gaseous feed stream with at least one halogen reactant (X.sub.2), under reaction conditions effective to produce an effluent stream comprising methyl halide (MeX), and hydrogen halide (HX); c) separating from the effluent stream obtained in step b): (i) a methyl halide (MeX) stream; and, (ii) a hydrogen halide (HX) stream; d) reacting the methyl halide (MeX) stream separated in step c) with a solid metal oxide (MO.sub.(s)) under reaction conditions effective to produce metal halide (MX) and dimethyl ether (DME); and e) decomposing by means of electrolysis said hydrogen halide (HX) stream separated in step c) under conditions effective to produce a gaseous hydrogen (H.sub.2) stream and a stream comprising halogen reactant (X.sub.2).

A gas treatment system includes a first scrubber, a regenerative catalytic oxidizer (RCO) that treats gas that passes through the first scrubber, a second scrubber that treats the gas that passed through the regenerative catalytic oxidizer, and a dielectric barrier discharge (DBD) plasma reactor that treats the gas that passed through the second scrubber. The regenerative catalytic oxidizer includes a two-bed regenerative catalytic reactor.

The present invention relates to a method for producing a molding catalyst for obtaining chlorine (Cl.sub.2) through an oxidation reaction of hydrogen chloride (HCl), and more specifically, to a method for producing an oxidation reaction molding catalyst by adding heterogeneous material to a ruthenium oxide (RuO.sub.2)-supported catalyst having titanium oxide (TiO.sub.2) as a supporting body, and molding so as to be usable in a fixed bed reactor to produce chlorine (Cl.sub.2) from hydrogen chloride (HCl).

The present invention relates to a method for producing a molding catalyst for obtaining chlorine (Cl.sub.2) through an oxidation reaction of hydrogen chloride (HCl), and more specifically, to a method for producing an oxidation reaction molding catalyst by adding heterogeneous material to a ruthenium oxide (RuO.sub.2)-supported catalyst having titanium oxide (TiO.sub.2) as a supporting body, and molding so as to be usable in a fixed bed reactor to produce chlorine (Cl.sub.2) from hydrogen chloride (HCl).