摘要:
An improvement in the selective removal of SO2 from gases containing SO2 and O2 wherein a thiosulfate-rich aqueous solution containing a sulfite-forming additive is used as the selective SO2 absorbent, whereby a gas of substantially reduced SO2 content and a substantially unchanged O2 content is obtained.
摘要:
SPENT ZINC CHLORIDE CATALYST IS REGENERATED BY COMBUSTION IN THE VAPOR PHASE IN THE PRESENCE OF A FLUIDIZED REFRACTORY SOLID SUCH AS SILICA SAND. USE OF A NEAR-STOICHIOMETRIC AMOUNT OF AIR RESULTS IN SUBSTANTIALLY COMPLETE REMOVAL OF SULFUR, NITROGEN AND CARBON IMPURITIES, WHILE USE OF ABOUT 40 TO 60% OF THE STOICHIOMETRIC AMOUNT OF AIR RESULTS IN PRODUCTION OF A LOW-SULFUR FUEL GAS.
摘要:
SPENT ZINC HALIDE HYDROCRACKING CATALYST IS CONTACTED WITH A NONPOLAR HYDROCARBON SOLVENT IN THE PRESENCE OF HIGH PRESSURE HYDROGEN TO EXTRACT UNCONVERTED HYDROCARBONACEOUS RESIDUE FROM THE SPENT CATALYST.