PROCESS AND DEVICE FOR PURIFICATION OF A GAS CONTAINING HYDROGEN SULFIDE AND SULFUR DIOXIDE

• Main Authors: VILTARD, JEANARLES, BOUCOT, PIERRE
• Format: Patent
• Language: English; French
• Published: 10.10.2006
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

Procédé de fabrication de soufre élémentaire par réaction d'hydrogène sulfur é et de dioxyde de soufre au sein d'un milieu (2) réactionnel liquide comprenant un solvant de ces deux composés, contenant au moins un composé basique soluble, par mise e n contact à co-courant du mélange gazeux (3) contenant du dioxyde de soufre et de l'hydrogène sulfuré et du solvant contenant le catalyseur (14). A method for the purification of gas containing hydrogen sulphide and sulphur dioxide comprises contacting the gas mixture containing hydrogen sulphide and sulphur dioxide in presence of an alkaline compound soluble in a solvent. The contacting is carried out at co-current of the gas and the liquid. The device (figure 2) for fabricating elemental sulphur by reaction of H2S and SO2 in the liquid reaction mixture comprises: a vertical reactor (2) containing a lagging (2a) inlet (3) for the gas mixture at the upper limit of the reactor outlet (7) for the residual gas mixture at the lower limit of the reactor withdrawing means (1) of the liquid reaction medium separating means (9,13) and recovering of liquid sulphur and recycling means (4, 14) of the liquid reaction medium at the upper limit of the lagging (2a) linked to a withdrawing unit (1) means of indirect heat exchange (10) connected to recycling means (4, 14).