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Titre: Desulphurisation of waste gas from fluidised bed combustion plant - using natural limestone or dolomite with specified granulation Auteur:Muenzner,Heinrich,.Dr; Schilling,Hans-Dieter,Dr Date:
26 November 1981
Sujet:Performing Operations ; Transporting ; Physical OR Chemical Processes OR Apparatus In General ; Separation ; Medicine ; Sciences ; Chemistry Description:
Desulphurisation of waste gas from fluidised bed combustion plant is carried out with natural limestone or dolomite with a pore vol. of 3-50 cm3/100 g in the uncalcined state, measured by the Hg penetration method in the pore size range above 0.01 micron, and a grain size above the discharge limit. Pref. the grain dia. is between the discharge limit and 5 times this limit, the max. dia. being below 40 microns and the average dia. below 10 microns. Types with a discontinuous grain size spectrum with the fraction of dia. between 40 microns and the pneumatic discharge limit removed are esp. useful. A very high degree of desulphurisation is possible.
Titre: RECOVERY OF GASES FROM GASEOUS MIXTURES Auteur:Muenzner, Heinrich; Horbel, HUGO; Knoblauch, Karl; Koerbaecher, Werner; Peters, Werner; Juentgen, Harald Date:
26 August 1980
Sujet:Performing Operations ; Transporting ; Physical OR Chemical Processes OR Apparatus In General ; Separation ; Chemistry ; Metallurgy ; Inorganic Chemistry ; NON-Metallic Elements ; Compounds Thereof ; Medicine ; Sciences ; Chemistry ; Chemistry Description:
A process and and arrangement for converting air into a gaseous mixture enriched with nitrogen includes passing a first stream of air through an adsorber which preferentially adsorbs oxygen from the admitted first stream and thereby discharges a second stream of a gaseous mixture having a higher proportion of nitrogen as compared with the first stream. Control means are positioned in the second stream to measure the oxygen content of the continuously discharging second stream and terminates the discharge of the same when the oxygen content thereof exceeds a predetermined value. Residual amounts of gaseous mixture are then evacuated from the adsorber. An additional adsorber is connected with the first-mentioned adsorber to form a first stage with each adsorber being alternately charged with air in a cyclical operation. Additional stages are connected in series so that the effluent nitrogen-enriched gaseous mixture can be further enriched to a final desired value.