| 摘要 |
Provided are: a sulfide-manufacturing facility which can attain effective utilization of hydrogen sulfide gas and thus improve the reaction efficiency of hydrogen sulfide; and a sulfide-manufacturing process. This sulfide-manufacturing facility is provided with: a sulfidation vessel (1) to which a reaction start liquid (11), hydrogen sulfide gas (12) and a sodium hydrogen sulfide-containing aqueous solution (13) are supplied; a reaction finish liquid reserving tank (2) to which a reaction finish liquid (14) is supplied; a first gas washing tower (3) in which hydrogen sulfide gas (17) discharged from the sulfidation vessel (1) is absorbed by an aqueous sodium hydroxide solution (19); a second gas washing tower (4) in which hydrogen sulfide gas (21) discharged from the reaction finish liquid reserving tank (2) is absolved by an aqueous sodium hydroxide solution (20) discharged from the first gas washing tower; and a circulating system (6) for supplying a sodium hydrogen sulfide-containing aqueous solution (13) discharged from the second gas washing tower (4) to the sulfidation vessel (1). Thus, the hydrogen sulfide gas (17,21) can be effectively utilized, whereby the reaction efficiency of hydrogen sulfide can be improved. |
