Calcium hydroxide-containing compositions can be manufactured by slaking quicklime, and subsequently drying and milling the slaked product. The resulting calcium hydroxide-containing composition can have a size, steepness, pore volume, and/or other features that render the compositions suitable for treatment of exhaust gases and/or removal of contaminants. In some embodiments, the calcium hydroxide-containing compositions can include a D.sub.10 from about 0.5 microns to about 4 microns, a D.sub.90 less than about 30 microns, and a ratio of D.sub.90 to D.sub.10 from about 8 to about 20, wherein individual particles include a surface area greater than or equal to about 25 m.sup.2/g.

Process for manufacturing highly porous slake lime comprising a feeding step of quicklime, a feeding step of water in a feeding zone of a hydrator, a slaking step of said quicklime in a slaking zone of said hydrator and a maturation step in a maturation zone of said hydrator to form slaked lime.

Process for manufacturing highly porous slake lime comprising a feeding step of quicklime, a feeding step of water in a feeding zone of a hydrator, a slaking step of said quicklime in a slaking zone of said hydrator and a maturation step in a maturation zone of said hydrator to form slaked lime.

A lime slaker system for converting quicklime to a lime slurry includes: a lime feeder; a base slaker that includes a slaking chamber and a dilution chamber; a grit remover; and a modular water panel with a piping assembly in fluid communication with at least the base slaker and grit remover. The modular water panel is configured to independently control water distributed to the slaking compartment, the dilution chamber, and the grit remover.

A lime slaker system for converting quicklime to a lime slurry includes: a lime feeder; a base slaker that includes a slaking chamber and a dilution chamber; a grit remover; and a modular water panel with a piping assembly in fluid communication with at least the base slaker and grit remover. The modular water panel is configured to independently control water distributed to the slaking compartment, the dilution chamber, and the grit remover.

A method of providing highly reactive hydrated lime and the resultant lime hydrate where an initial lime feed comprising calcium and impurities is first ground to a particle-size distribution with relatively course particles. Smaller particles are then removed from this ground lime and the smaller particles are hydrated and flash dried to form a hydrated lime, which is then milled to a significantly smaller particle size than that of the relatively course particles.

A method of providing highly reactive hydrated lime and the resultant lime hydrate where an initial lime feed comprising calcium and impurities is first ground to a particle-size distribution with relatively course particles. Smaller particles are then removed from this ground lime and the smaller particles are hydrated and flash dried to form a hydrated lime, which is then milled to a significantly smaller particle size than that of the relatively course particles.

A method of providing highly reactive hydrated lime and the resultant lime hydrate where an initial lime feed comprising calcium and impurities is first ground to a particle-size distribution with relatively course particles. Smaller particles are then removed from this ground lime and the smaller particles are hydrated and flash dried to form a hydrated lime, which is then milled to a significantly smaller particle size than that of the relatively course particles.

The invention relates to a plant and a method for the production of decarbonised hydrogen using carbonate, water, gas containing hydrocarbons and electricity. The plant 100 first of all comprises an electric calciner 10, a contactor 20, an apparatus for correcting the pH 30 and a metering device 40. The plant 100 is suitable for receiving electrical energy, carbonate, water, natural gas at its input and for releasing decarbonised hydrogen at its outlet and an alkaline water rich in bicarbonates which, once released into the sea, represents the permanent storage for CO.sub.2. The plant 100 uses bicarbonates as permanent storage of CO.sub.2 in the sea: this storage allows the production of decarbonised hydrogen at low costs and in modular plants.

A manufacturing facility for quicklime is provided, which can manufacture highly active quicklime by a simple manufacturing facility, and which can also separate and recover, in a high concentration, CO.sub.2 gas generated at the time of manufacturing quicklime. The manufacturing facility for quicklime is configured by including: a regenerative calciner 11 which has a supply port 11a for supplying granular limestone C into the regenerative calciner 11, heating means capable of maintaining the temperature of the atmosphere in the regenerative calciner 11 at a temperature not less than the calcination temperature of the limestone, an exhaust pipe 15 connected to an upper part of the regenerative calciner 11 so as to discharge combustion exhaust gas of the heating means and CO.sub.2 gas generated by the calcination of limestone, and a discharge port 14 for taking out quicklime produced by the calcination; and a heat medium 16 which has a particle diameter larger than the particle diameter of the limestone and which is filled in the regenerative calciner 11.