| 摘要 |
A plant for producing hydrogen peroxide in situ in a paper mill, including a first vessel (2) for catalytically hydrogenating at least one anthraquinone derivative dissolved in a mixture of organic solvents, a second vessel (3) for oxidising the resulting hydrogenated working solution by injecting an oxygencontaining gas mixture such as air into the working solution to give an oxidised working solution, and a third vessel (5) for removing hydrogen peroxide from the oxidised working solution by injecting water against the flow of oxidised working solution, means being provided for injecting a hydrogen-containing gas into the first vessel and additional air into the second vessel. Said hydrogen-containing gas injection means include an ejector (21) consisting of a constricted pipe connected to a hydrogen supply channel (24) and means (23) for supplying pressurised steam from the paper mill (1) to said ejector, so that the steam entrains the hydrogen-containing gas towards the first vessel and expands after passing though the constricted portion of the pipe.
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